Wednesday, November 27, 2019
Vocation and Religion free essay sample
A discussion on the way in which Samuel Butler satirizes the idea that ones vocation must be religious or theological in the nature of its calling with reference to his book, The Way of All Flesh. The following paper examines the way in which Butler suggests religion can prove an obstacle to finding an individuals true purpose in life in his book , The Way of All Flesh.References are made to Robert Brownings poem Fra Lippo Lippi. and Tennysons Locksley Hall, in which both the central characters have vocations that are not religiously sanctioned vocations. Before the full flowering of the Victorian Era in British society, the nature of what constituted an individuals vocation was primarily understood primarily in theological terms. Even today, the Merriam Websters Collegiate Dictionary defines the word vocation as a summons or a strong inclination to a particular state or course of action but especially as a divine call to the religious life. We will write a custom essay sample on Vocation and Religion or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page However, the increasing interest in science, history, and secular identity caused Victorian society as a whole to undergo a profound destabilization. Both the religious and social moral structures that had prioritized religion as a means for providing an individual with his or her ideal occupation were called into question. Rather than viewing those called to the clergy as the only recipients of a unique gift or vocation, the idea that religion was the only calling an individual could experience is called into question in a number of Victorian narratives of self-understanding.
Sunday, November 24, 2019
Exceptional Education Referral To Placement Essays - Free Essays
Exceptional Education Referral To Placement Essays - Free Essays Exceptional Education Referral To Placement Abstract This paper will reflect upon the school-wide dilemma of students, families and schools involved in the referral and placement process of students with special needs such as specific learning disabilities and beyond. This is a genuine problem in our Florida school system as each year is seems to take longer for a student who has been referred by an educator to be placed into a situation which best meets their academic and/or emotional needs. This paper will concentrate on stories derived from primary stakeholders dealing with this situation. The stakeholders for this particular story are; Diana, a 3rd grade student in need, and her family, her teacher, the school psychologist, and the school exceptional student education teacher. Each stakeholder will present their version of the problem as a personal situation. Exceptional Education-Referral to Placement Time: A School-Wide Dilemma My story begins by telling you that I am a 3rd grade teacher and have taught elementary school for close to four years. In that time, I have been able to teach many youngsters and also see that there are some learners whose needs exceed what I have been able to give them in a regular classroom setting. When I used to teach fifth grade, most students with academic concerns had already been identified and place, part time, in an SLD (Specific Learning Disability) setting as needed. However, some students had still managed to travel through six years of public school barely scraping by. Now teaching third grade, I have two students in particular I am highly concerned about. One of which has been on the refer for testing list since second grade and has still not been able to be placed in an educational setting which will focus on her needs. The second little girl is mostly likely a result of her mother taking drugs while she was in the womb. This child's development seems to be slowing as the rest of the students around her progress. For this paper, I am going to focus on the plight of the first child for my example. From my observations as the teacher of the little girl I will refer to as Diana, it is extremely evident a regular classroom setting is not meeting the needs of this child. STAKEHOLDERS There are many people in this little girl's life who hold a stake in her successes. I, as her teacher, am certainly one, as well as herself, her parents and family, our school varied exceptionalities teacher, the county/school psychologist and the school principal. This list could also continue to her future teachers and beyond, but I will be discussing the stories of the main stakeholders I have previously listed. Teacher's Story Diana, at nine years old, has already been detained once in her schooling career. This child is able to identify letters, but digraphs such as Sh, or Ch are not comprehensible to her. Now in third grade, it is clear me that Diana is not learning at the same rate as her fellow classmates. I felt from within the first week that she was in my class that this child was well below grade level. I see her frequently off task, dawdling if you will by shuffling papers, organizing her desk and book bag, practically anything to avoid showing her classmates that she does not understand the work that is going on in the classroom. As Diana's teacher, I am troubled that in my regular classroom, I cannot give her the full attention and services that would meet her individual needs. I did the by the book way that a teacher is supposed to do to find out the history of this child. This meant checking the cumulative folder of past school history and I also spoke with her previous teachers and inquired with the guidance counselor as to whether or not she was on a testing list. I was informed that Diana had been referred by her second grade teacher, but it would be helpful if I continued with documentation of school work and followed up. I have done this and I have also discussed Diana's situation at quarterly profile meetings about students where the principal, teacher and curriculum resource teacher are all present. Unfortunately, because Diana
Thursday, November 21, 2019
Ethical situation in business Essay Example | Topics and Well Written Essays - 1250 words
Ethical situation in business - Essay Example panies need to emphasize on ethics in order to satisfy their employee pool and use existing human resource pool in to fillip growth (Trevino & Nelson, 2010, p. 194). Code of ethics helps the company to build sustainable image in front of their stakeholders. Unethical business practice creates negative image in front of shareholders and government of the country. In the extreme case of unethical behaviors like fraud, bankruptcy, misrepresentation of company asset or any kind of forgery government takes legal action against the company. Legal action against the company not only hurts market reputation of the company but negatively affects shareholderââ¬â¢s interest. In the given situation companies of USA has designed ethical assistance lines for employees to report ethical concern or ask question about companies business pattern in order to create a transparent ethical environment in the organization. The following diagram will show propensity of employee to report unethical business practice of the company (Ferrell, Fraedrich, & Ferrell, 2009, p. 222). The company will only accept projects for which they have the requisite knowledge, expertise and experience to accomplish task successfully. The company will engage only those employees who have the requisite expertise and knowledge to complete the project in accordance to demand of clients. Employees of the company will take care of the confidential client information and must not disclose any of the information in public without taking formal permission from clients. Disclosing client information to their competitorââ¬â¢s is strictly prohibited and employees practicing such unethical transaction will be under legal jurisdiction of Federal Government. Employees and the company will not accept any kind of bribe, remuneration, commission or any kind of fringe benefit from third party connected to clients without taking prior permission from clients. The company will disclose such kind of monetary offer from third
Wednesday, November 20, 2019
Financial Information for CRODA International Plc Essay
Financial Information for CRODA International Plc - Essay Example Industrial specialties- which includes base chemicals, home care, polymers and coatings, additives for polymers, lubricant additives, lubricants and processed vegetable oils. (www. investing.businessweek.com). Consumer care division which includes international business in health care, personal care, and crop care ââ¬â engaged in all markets throughout the world with a thumbing need for sustainable ingredients and innovations. Further, Croda has an enterprise technology division (R&D) which recognizes and assimilates new technology into Crodaââ¬â¢s international business set up. (www.croda.com). Croda was able to post pre-tax profits of 10.5% during the year 2008 in spite of the serious international economic recession. However, due to stable focus on new markets, product innovation and recession mingled with the instant reduction in cost have facilitated Croda to accomplish one more year of pre-tax revenue growth in spite of the worst scenario in the international economy. (Chairman speech, AR 2009). The salient feature of the business model of Croda is the capacity to offer a variety of products to a variety of customers all over the globe. Crodaââ¬â¢s persistent focus on originality in specialties has offered them the capacity to derive the true value for their products. (CEO Speech AR 2009). Croda is in a true sense a really global company as it is having only just 7% sales in the homeland of U.K. All of its subsidiary company around the world has targeted sales, operating margin, profit growth targets that form fundamental to their strategic plans and budgets. Crodaââ¬â¢s report their progress annually against five major financial performance parameters. According to Crodaââ¬â¢s annual report 2009, Croda International Plc has prepared its financial reports as demanded by the Companies Act, 2006 of U.K and as provided by the U.K accounting.
Sunday, November 17, 2019
A Reflective Account of a Teaching Session about Changing a Stoma Essay
A Reflective Account of a Teaching Session about Changing a Stoma - Essay Example It is thus important that on my part, I analyse my approach in teaching to determine its effectiveness, strengths, weaknesses and what I should do to make it better. The best approach to examine my approach to teaching is definitely through the use of Gibbââ¬â¢s reflective cycle as it will enable me to reflect a great deal in using one situation and analyse everything that occurred in it, relating my actions to each result that occurred. Through Gibbââ¬â¢s Reflective Cycle, I will analyse a case in which I taught a patient how to change a stoma. I will first describe the context of the teaching- how I acted and how the patient reacted. According to Jasper (2003) this should be followed by analysing ones feelings in the situation and emotions at the event. One then follows this up with an evaluation of the experience, determining which aspects turned out to be positive and which ones were not, and what failed to go according to plan. After this one needs to critically analyse th e occurrence, establishing a conclusion on the entire experience and ultimately come up with an action plan to follow in case of a similar experience in the future. By the time I am through with this, the teaching experience will be analysed in entirety and the next patient I teach how to change a stoma will have a better experience. The context of the teaching This is the first step of Gibbââ¬â¢s Reflective cycle, where I will analyse what actually happened as I taught the patient how to change the stoma. To begin with, the patient had undergone a surgery to due to a severe case of diverticulitis and was just about to be discharged. I visited her ward as was required of me and undertook to explain to her how from that moment henceforth she would be changing the stoma. The patient was clearly in anxious emotional state due to the surgery she had just undergone, although it had been very successful. As Winston et al (1987) so ably puts it, the pre-operative and post-operative emot ional states of surgery patients is characterised by anxiety, misgivings, depression and irritability. Spielberger (1973) had earlier on suggested that patients usually develop anxiety to surgery as an emotional reaction towards situations that physically threatening, while Furst (1978) demonstrated that patients under surgery usually reported fear, apprehension, worry and uncertainty. All this serve to explain the emotional status of my patient as at the time I was teaching her. I realise that even before I had started, she was in a state that would make it difficult to absorb what I was saying. I first explained briefly to the patient the procedure she had just gone through- the surgery, and a little about diverticulitis and stomas since I assumed she already had been informed. I told her that diverticulitis was a condition arising from inflamed pouches on her large intestines known as diverticula, and also informed her that it was not a rare condition since about 10% of Americans above the age of 40 have diverticula and of these, ten out of twenty five develop diverticulitis (Borgadus, 2006). On the stoma, I told her that it was a surgical bypass of her colon system which had been affected by the diverticulitis and now failed to function properly. I informed her that the colostomy meant that she had to have a bag for receiving fecal matter a single time (Stoma and Stomata, 2009). I could see that she was embarrassed by her condition and the life that she would lead from that henceforth. I then took the patient through the steps of changing a stoma. I used knowledge of the Honey and Mumford teaching and learning style to determine which kind of learner she was. The Honey and Mumford teaching and learning style identifies four distinct preferences of learning styles,
Friday, November 15, 2019
Impact of the Land Registration Act 2002
Impact of the Land Registration Act 2002 A registration scheme far more comprehensive than land charges is found today in the Land Registration Act 2002. The principle significance of this is that the register tells the purchaser who owns the legal estate. The system moreover is not limited to legal estates. Subject to some exceptions (overriding interest), all legal and equitable interest must be entered on the register if they are to bind a purchaser.[1] The first thing to ascertain when dealing with any piece of land is which system of conveyancing is to be applied. And it is clear in the scenario that the land is registered.[2]The purchaser will want to know whether any third parties have rights to the land which might interfere with the intended use of it. Concern about these matters will lead the purchaser to make extensive enquiries before the purchase of the estate is finally concluded.[3] A. Legal leases not exceeding seven years constitute overriding interest and this falls under schedule 3, Para 1 of LRA 2002. Short legal leases are specifically excluded by Para 1 from the category of short leases which override registered disposition. That includes leases which are to take effect in possession more than three months after the date of grant.[4] Polly comes to the cottage after Alisha brought it but Polly was given the lease the previous year. And since Alisha didnââ¬â¢t find any belongings in the cottage before buying we can assume that Polly returned after a year to take possession. In that case Sec.4 (1) (d) applies which makes the lease not an overriding interest. Because such leases mean that there is a real risk that the purchaser might buy the estate without discovering that it is subjected to a lease when the tenant is not necessarily in possession of the land. In such scenarios we can conclude that only the facts matters. And if Polly wants her legal lease to be protected knowing that she wonââ¬â¢t be in possession of the cottage for some time she should have made a notice[5] in the register about her lease. But certain interests cannot be protected by notice[6] , one such case is when the lease doesnââ¬â¢t exceed more than three years, interest under a trust of land or restrictive covenants. Since Pollyââ¬â¢s lease is for four years it can be entered into the charges register. The fact that an interest is the subject of a notice doesnââ¬â¢t mean that the interest is valid. However, if the interest is valid, the notice ensures both that it binds any purchaser for valuable consideration[7] , and he knows about it before he takes the estate.[8] It is therefore much safer to protect such interests by notice. Once such an entry has been made the interest losses its overriding status[9] , but of course binds a disponee for valuable consideration. B. It is essential to remember that, it is the rights of the occupiers that bind purchasers and not the occupation itself. The claimant must always prove two elements: actual occupation and an interest in land. In National Provincial Bank v Ainsworth[10] it was held that deserted wifeââ¬â¢s equity to be a mere personal right against her husband; her occupation made no difference.[11] Judges have regularly emphasized that the question of whether a party is in actual occupation is essentially a question of fact. Lord Wilberforce stated that[12], ââ¬ËIt is the fact that matters and what is required is physical presence on the land and not some entitlement in lawââ¬â¢ this was stated in Abbey National v Cann. In LRA 2002 Schedule 3 , Para 2 if occupation is established but the interest claimed was not known to the purchaser , the question will then be whether the occupation was obvious on reasonable inspection of the land.[13] Wilma daily comes home even for a short while and it is very much unclear whether Alisha didnââ¬â¢t notice that. And the wedding photograph is good evidence to the fact that Wilma may have a share in the land. A thorough search should have taken place in such risky matters which Alisha didnââ¬â¢t. The question is Wilma not being present permanently in the cottage because she was looking after her sick mother which was clearly defined by the case of Chhokar v Chhokar[14]in relation to LRA 1925 were a similar situation has being dealt with. The court of appeal said that it had no difficulty in holding that she was in occupation at the date, and went on to describe her right in the property as an overriding interest. The effect of temporary absence is now being considered by the courts in Link Lending Ltd v Bustard.[15] Occupation of Wilma was obvious enough through the inspection even if Alisha didnââ¬â¢t know about it. This means that provided the occupation is discoverable, the disponee may still be bound by an interest of which she doesnââ¬â¢t know ( Malory Enterprises Ltd v Cheshire [2002] )[16]Nevertheless in Kingsnorth Finance Co Ltd v Tizard[17] provide that there was actual occupation even when the wife was divorced she visited every day to look after her children. Although she was not living there her daily activities might be regarded as sufficient to justify the result. The facts are all important in such a case.[18] The result in Chhokar seems clear, but what if the seller had removed all evidence of the wife. Like in the scenario it is unclear whether Alisha sees possessions of Wilma other than the wedding photograph before sale. And since Bob lies about a divorce Wilmaââ¬â¢s claim might be stronger in such a circumstance. The purchaser has a statutory defence to an overriding interest if inquiry is made of the occupier, but the rights are not disclosed.[19] This is a clear hint to a purchaser as to what should be done. Those in actual occupation must be discovered and then asked what their interests are. In practice and in the scenario they tend to rely on the sellerââ¬â¢s information. This might be convenient but gives no protection. And when Alisha identified the wedding photograph she should have been careful enough to ask the occupier what their interests are rather than whether she is present or not. This is because there is no need for overriding interest to be the source of the actual occupation.[20] The scenario doesnââ¬â¢t state that Wilma and Bob are divorced so this matter can be taken under Family Law Act 1996, s31 (10), that where one spouse or civil partner owns the family home, the other spouse has a right not to be evicted if already in occupation and a right with a leave of the court to enter and occupy if not already in occupation. And this lasts as long as the marriage continues. Under Sec.31 Wilmaââ¬â¢s home rights constitute a charge on the estate or interest of Bob and will bind Alisha in the property for valuable consideration if they are protected by a notice on the register of the title. This acts as an exception to overriding interests and thus binds Alisha. C. Easements and profits can be created expressly or impliedly by granting another person a right over oneââ¬â¢s land or by reserving a right over land which one is transferring to another person.[21]Only legal easements are now capable of overriding the register. The LRA 2002 effectively reversed the controversial case of Celsteel Ltd v Alton House Holdings Ltd[22] which held that both legal and equitable easements were overriding within 1925 scheme. But if somehow the deed is registered it loses its overriding status. We can assume that Maxwellââ¬â¢s claim satisfy the requirement for a valid easement as laid down in Re Ellenborough Park.[23]A valid easement can be created by prescription which is long use of land and under Sec 2 of the Prescription Act 1832. The use for many years of a right which is capable of being an easement can create a legal easement by prescription.[24] Prescription arises if an easement has been used openly, as of right, without permission and continuously by one fee simple owner against another, provided that the right could have legitimately been granted by the landowner.[25] Maxwell does use the path openly and even notify Alisha of his right and say he has been using it for any years. It is somewhat unclear whether the prescription is by lost modern grant. Finally, we can come to a conclusion which interests bind Alisha and which does not. The legal lease of Polly doesnââ¬â¢t bind Alisha since thereââ¬â¢s lack of physical presence and notice as explained. But the share of Wilma does bind Alisha since she has some equitable rights towards her share of the property. And finally the easement will also bind Alisha through the Prescription Act 1832. Critically examine the rationale for the continued existence of interests which override. ââ¬Å"Overriding interests are important and controversial because they contravene the most basic registration principle: they bind purchasers despite not being entered on the Registerâ⬠Roger Smith, Elements of Land Law (Pearson Longman 2007) In a sense overriding interests are rather like ââ¬Ëtrump cardsââ¬â¢ of the registered land system, taking automatic priority to any rights which are subsequently acquired by a person in the land. Not only that, but they can also lead to alteration of the register with no compensation being payable to the purchase. Little wonder then that a former Chief Land Register referred to them as ââ¬Ëa stumbling blockââ¬â¢.[26] When compulsory title registration was introduced, the aim of its creators was to simplify conveyance by placing all the essential information about an estate in land on a register. Thereafter a purchaser intending to buy the land will only have to look up at the register in order to discover all what he needed to know about the property.[27] A major difficulty arose from the category of ââ¬Ëoverriding interestââ¬â¢. The original notion of land registration was that the register would provide a complete record of the title, so that the purchaser will be able to buy it with minimum or other enquiries or inspections.[28] The fundamental principle behind registered land is the mirror principle, which is to reflect accurately and completely and beyond all argument the current facts that are material to a mans title. Overriding interests represents the greatest breach in the mirror principle. They were not accidentally created but rather deliberately done by the legislature and given automatic effect precisely because they should be obvious to any prospective purchaser or their enforcement is too important to depend on registration.[29] On the other hand the curtain principle is perhaps the most ambitious motive behind the origin 1925 Act and it remains a key principle under 2002 Act. The aim is to keep certain types of equitable interests off the register completely. As Williams and Glynââ¬â¢s Bank v Boland shows, if the curtain is not raised the purchaser can easily be bound by such equitable interests. This problem clearly involves striking a balance between protection of the purchaser and protection for the occupier of land and it arose largely due to social and judicial changes.[30] Paragraphs 1 to 3 of Schedule 3 cover three types of interests which were overriding under LRA 1925. They are short leases, rights of persons in actual occupation and easements and profits. Schedule 3, Para 1 shortens the length of a lease from not exceeding 21 years to not exceeding 7 years. And in the future it can reduce to 3 years with the effect of e-conveyancing[31]. The reason why these leases override is that it would be unreasonable to expect short leases to be registered and if they were the register would be cluttered up by them. Under the 1925 Act anyone with proprietary right in property and also in actual occupation could claim an overriding interest. In Williams Glynââ¬â¢s Bank v Boland in 1981 defined actual occupation as ââ¬Å"It is the fact of occupation that matters and what is required is the physical presence in the land and not some entitlement in lawâ⬠. However, Schedule 3 of LRA 2002 has reduced the extent to which these interests can bind a purchaser on subsequent registration of title so that a purchaser will not be bound if the occupation would not have been obvious on a reasonable inspection of the land at the time of the disposition. Under LRA 1925 s.70 (1) (a) all legal easements and profits and certain equitable easements[32] were overriding. But this wide category was reduced by LRA 2002 under Schedule 3, Para 3 where only legal easements by prescription or implied easements and profits were overriding. The LRA 2002 effectively reversed the controversial case of Celsteel Ltd v Alton House Holdings Ltd[33] which held that both legal and equitable easements were overriding interests within the 1925 scheme. Under LRA 1925 Sec. 70 (1) (f) a squatter could obtain title after 12 years adverse possession.[34] The new rules introduced by LRA 2002 apply to any squatter who had not completed the 12 year imitation period before the Act came into force on 13th October 2003. The rules are designed to protect the rights of the registered proprietor, and as a result the squatterââ¬â¢s chances of acquiring title to land are greatly reduced by the new scheme.[35] Finally local land charges override but they should be discovered by a local land charges search carried out before purchase. Moreover other interests, such as chancel repair liability will cease to override on 13 October 2013. Thus the ââ¬Ësnap shotââ¬â¢ is becoming more accurate.[36] Why do we have them? At one time it was argued that the register replaces the title deeds and that the registration system should not protect purchasers in respect of interests not generally found in title deeds. Although this seems correct as historical explanation[37], the law commission has rejected it as an approach fit for the modern law. Their view is that, ââ¬Å"In the interest of certainty and of simplifying conveyancing, the class of right which may bind a purchaser otherwise than as the result of an entry in the register should be as narrow as possible but â⬠¦ interests should be overriding where protection against purchasers is needed, yet it is either not reasonable to expect or not sensible to require any entry on the register.â⬠[38] They are also difficult to discover on an inspection of the land.[39] Not surprisingly the 2002 Act is working towards either minimizing or abolishing some overriding interests but has not yet worked out a strategy to eradicate them once and for all.[40] To make them lose their rights would contravene Article 1 of the First Protocol of ECHR. Active promotion of the advantages of registering interests could work in favor of both the purchaser and the beneficiaries of these rights. Times have changed and the importance of moving on cannot be underestimated.[41] This surely illustrates the deepening of the crack in the mirror principle of registered land. In order to narrow the crack, the class of overriding interests may be made more certain by narrowing the class. On the grounds of public policy, there will perhaps always be interests which will need protection against the purchaser, where it will be unreasonable to register the interests. Therefore, the extent of the crack can never really get away from third- party interests, which is just as important as having quicker and cheaper conveyancing. Until legislation makes clear specifications on what particular interests can qualify, the concerns of overriding interests will remain. Bibliography Textbooks Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) Roger J Smith,Property Law(7th, Pearson Education Limited, 2011) Martin Dixon , Gerwyn LL H Griffiths and Emma Lees, QA Land Law (8th, Routledge, 2013) Journal Articles Matthew Roach, the end is nigh for Overriding interests -Or is it? [Summer 2013 ] 2 Stewart-Wallace , principles of land registration, p 32 Online resources Mangala Murali, Overriding Interests ââ¬âa conundrum of English Land Law (Law Brief Update October 10, 2012 ) http://www.lawbriefupdate.com/2012/10/10/overriding-interests-a-conundrum-of-english-land-law/> accessed 1/12/2015 Statues Land Registration Act 1925 Land Registration Act 2002 Prescription Act 1832 Limitation Act 1980 Cases Bakewell Management Ltd v Brandwood Celsteel Ltd v Alton House Holdings [1985] Celsteel Ltd v Alton House Holdings Ltd [1985] 1 WLR 204 Dewan v Lewis [2010] EWCA Civ 1382 Kingsnorth Finance Co Ltd v Tizard [1986] 1 WLR 783 (Ch D) Link Lending Ltd v Bustard [2010] EWCA Civ 424 Malory Enterprises Ltd v Cheshire [2002] National Provincial Bank v Ainsworth [1965] AC 1175 Re Ellenborough Park [1955] 3 All ER 667 Williams Glynââ¬â¢s Bank Ltd v Boland [1981] 1 [1] Roger J Smith,Property Law(7th, Pearson Education Limited, 2011) 53 [2]If one is not sure whether a registration has been made it can be found out by making an ââ¬Ëindex map searchââ¬â¢ which will tell you whether the estate has been registered. Further details may be obtained by making a full search of the register, which since 3 December 1990, can be done without the consent of the estate owner. [3] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 38 [4] S.4 (1) (d) [5] The Act defines a notice as ââ¬Ë an entry in the register in respect of the burden of an interest affecting a registered estate or chargeââ¬â¢ S.32(1) [6] S.33 [7] S 32(3) [8] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 106 [9] S 29(3) [10][1965] AC 1175 [11] Roger J Smith,Property Law(7th, Pearson Education Limited, 2011) 254 [12] Williams Glynââ¬â¢s Bank Ltd v Boland [1981] [13] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 118-119 [14] [15] [2010] EWCA Civ 424 [16] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 115 [17] [1986] 1 WLR 783 (Ch D) [18] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 115 [19] Sch3 Para 2b [20] Roger J Smith,Property Law(7th, Pearson Education Limited, 2011) 264 [21] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 111 [22] [1985] 1 WLR 204 [23] [1955] 3 All ER 667 [24] The role of this doctrine was summarized in Dewan v Lewis [2010] EWCA Civ 1382 [25] Bakewell Management Ltd v Brandwood [26] Roger J Smith,Property Law(7th, Pearson Education Limited, 2011) 251 [27] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 86 [28] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 86 [29] Martin Dixon , Gerwyn LL H Griffiths and Emma Lees, QA Land Law (8th, Routledge, 2013) 10 [30] ibid [31] The introduction of e-conveyancing will have tremendous significance for the operation of the registered title system. It will only remove the gap between execution and registration which , as we have seen , can cause problems , but will also reduce very considerably the number of interests which can be created ââ¬Ëoff the registerââ¬â¢. [32] Celsteel ltd v Alton House Holdings [1985] [33] [1986] 1 WLR 512 [34] Even if the squatter is no longer in possession at the date of disposition. [35] Judith-Anne MacKenzie,Textbook on Land Law(15th, Oxford University Press, 2014) 141 [36] Martin Dixon , Gerwyn LL H Griffiths and Emma Lees, QA Land Law (8th, Routledge, 2013) 21 [37] Stewart-Wallace , principles of land registration, p 32 [38] Another important factor permeating the changes introduced by LRA 2002 is the extent to which a purchaser may be expected to discover these interests without making extensive inquiries. ââ¬Å"Because overriding interests bind transferees of the land even though they are by definition, not protected on the register, they are widely acknowledged to be potential source of difficulty in registered conveyancingâ⬠The law commission report no254 1998 [39] Examples include rights of an occupier of land, a lease for a term of less than seven years, profits a prendre (fishing rights or shooting or hunting rights). [40] The rights of persons in actual occupation present formidable challenges for reformists and it is this area of law that professionals must work on to find a conducive solution. [41] Mangala Murali, Overriding Interests ââ¬âa conundrum of English Land Law (Law Brief Update October 10, 2012 ) http://www.lawbriefupdate.com/2012/10/10/overriding-interests-a-conundrum-of-english-land-law/> accessed 1/12/2015
Tuesday, November 12, 2019
Measuring Quality Health Care
{draw:g} {draw:g} {draw:g} Why is a patient the most important thing when it comes to healthcare? Without a patient, there would be no healthcare. What do patients look for when it comes to getting care they need? I feel that cost is one thing, but the most important thing a patient wants is quality care. A positive patient outcome is one of the measures of quality health care. Additionally, health care workers have many roles when determining quality care. The main factor to a positive patient outcome is providing the patient with the best care that can be given. This includes what ever it takes medically to keep this person healthy. Many people are denied certain medical procedures due to the insurance company not providing the payment. Therefore, the billing clerk should try and see if there is a charity that is available or set up a payment plan. This is another approach that I feel is necessary in providing a positive patient outcome and quality care, watch for medical errors. Why? According to Stevens, there are over 50,000 people that die every year in a hospital or healthcare institution due to a medical error. Training employees and having an administrator over parts of the facility would help improve on errors. Training is the key to the problem. If an employee gets adequate training, then there is less of a chance for a mistake. Roles that health care workers have when determining quality care vary. The main role is assessing the patient, diagnose, monitor, observe treatments, and respond to changes. Other roles that are played if the patient is at home are making sure the patient is in a safe environment, communication with all parties involved, making sure the patient is eating and drinking well, keeping an eye out for changes, and make sure the patient is using proper hygiene. Measuring quality care is important for the patient as well as the facility. Without the patient, there is no facility. Keeping a patient happy, comfortable and healthy is important. There are many different roles provided by health care workers that are involved in a patientââ¬â¢s care, depending on the care the patient needs. The main thing is a positive patient outcome. What makes something positive? A positive health care worker makes a big influence on a positive outcome. References: Stevens, A. (2008) http://blog. sunbeltstaffing. com/medical-ethics/what-role-do-healthcare-worker
Sunday, November 10, 2019
Phylogenetic
Molecular Phylogenetics An introduction to computational methods and tools for analyzing evolutionary relationships Karen Dowell Math 500 Fall 2008 Molecular Phylogenetics Karen Dowell 1 Abstract Molecular phylogenetics applies a combination of molecular and statistical techniques to infer evolutionary relationships among organisms or genes.This review paper provides a general introduction to phylogenetics and phylogenetic trees, describes some of the most common computational methods used to infer phylogenetic information from molecular data, and provides an overview of some of the many different online tools available for phylogenetic analysis. In addition, several phylogenetic case studies are summarized to illustrate how researchers in different biological disciplines are applying molecular phylogenetics in their work. Introduction to Molecular PhylogeneticsThe similarity of biological functions and molecular mechanisms in living organisms strongly suggests that species descended from a common ancestor. Molecular phylogenetics uses the structure and function of molecules and how they change over time to infer these evolutionary relationships. This branch of study emerged in the early 20th century but didnââ¬â¢t begin in earnest until the 1960s, with the advent of protein sequencing, PCR, electrophoresis, and other molecular biology techniques.Over the past 30 years, as computers have become more powerful and more generally accessible, and computer algorithms more sophisticated, researchers have been able to tackle the immensely complicated stochastic and probabilistic problems that define evolution at the molecular level more effectively. Within past decade, this field has been further reenergized and redefined as whole genome sequencing for complex organisms has become faster and less expensive. As mounds of genomic data becomes publically available, molecular phylogenetics is continuing to grow and find new applications. 4, 10, 17, 20, 22] The primary objective of molecular phylogenetic studies is to recover the order of evolutionary events and represent them in evolutionary trees that graphically depict relationships among species or genes over time. This is an extremely complex process, further complicated by the fact that there is no one right way to approach all phylogenetic problems. Phylogenetic data sets can consist of hundreds of different species, each of which may have varying mutation rates and patterns that influence evolutionary change.Consequently, there are numerous different evolutionary models and stochastic methods available. The optimal methods for a phylogenetic analysis depend on the nature of the study and data used. [5, 19, 20] Molecular Evolution: Beyond Darwin Evolution is a process by which the traits of a population change from one generation to another. In On the Origin of Species by Means of Natural Selection, Darwin proposed that, given overwhelming evidence from his extensive comparative analysis of living specimens and fossils, all living organisms descended from a common ancestor.The bookââ¬â¢s only illustration (see Figure 1) is a tree-like structure that suggests how slow and successive modifications could lead to the extreme variations seen in species today. [11, 27] Molecular Phylogenetics Karen Dowell 2 Figure 1. Evolution Defined Graphically. The sole illustration in Darwinââ¬â¢s Origin of the Species uses a tree-like structure to describe evolution. This drawing shows ancestors at the limbs and branches of the tree, more recent ancestors at its twigs, and contemporary organisms at its buds. [34] Darwinââ¬â¢s theory of evolution is based on three underlying principles: ariation in traits exist among individuals within a population, these variations can be passed from one generation to the next via inheritance, and that some forms of inherited traits provide individuals a higher chance of survival and reproduction than others. [11] Although Darwin developed his theory of evolution without any knowledge of the molecular basis of life, it has since been determined that evolution is actually a molecular process based on genetic information, encoded in DNA, RNA, and proteins. At a molecular level, evolution is driven by the same types of mechanisms Darwin observed at the species level.One molecule undergoes diversification into many variations. One or more of those variants can be selected to be reproduced or amplified throughout a population over many generations. Such variations at the molecular level can be caused by mutations, such as deletions, insertions, inversions, or substitutions at the nucleotide level, which in turn affect protein structure and biological function. [11, 22] What is a Phylogeny? According to modern evolutionary theory, all organisms on earth have descended from a common ancestor, which means that any set of species, extant or extinct, is related.This relationship is called a phylogeny, and is represented by phyloge netic trees, which graphically represent the evolutionary history related to the species of interest (see Figure 2). Phylogenetics infers trees from observations about existing organisms using morphological, physiological, and molecular characteristics. Figure 2. Phylogeny of Mammalia. This phylogenetic tree shows the evolutionary relationships among six orders of Mammalian species (taxa). Taxa listed in grey are extinct. The ââ¬Å"tree of lifeâ⬠represents a phylogeny of all organisms, living and extinct.Other, more specialized species and molecular phylogenies are used to support comparative studies, test biogeographic hypotheses, evaluate mode and timing of speciation, infer amino acid sequence of extinct proteins, track the evolution of diseases, and even provide evidence in criminal cases. [19] Molecular Phylogenetics Karen Dowell 3 Understanding Phylogenetic Trees Before exploring statistical and bioinformatic methods for estimating phylogenetic trees from molecular data , itââ¬â¢s important to have a basic familiarity of the terms and elements common to these types of trees. See Figure 3. ) Figure 3. Basic elements of a phylogenetic tree. Phylogenetic trees are composed of branches, also known as edges, that connect and terminate at nodes. Branches and nodes can be internal or external (terminal). The terminal nodes at the tips of trees represent operational taxonomic units (OTUs). OTUs correspond to the molecular sequences or taxa (species) from which the tree was inferred. Internal nodes represent the last common ancestor (LCA) to all nodes that arise from that point.Trees can be made of a single gene from many taxa (a species tree) or multi-gene families (gene trees). [1, 10] A tree is considered to be ââ¬Å"rootedâ⬠if there is a particular node or outgroup (an external point of reference) from which all OTUs in the tree arises. The root is the oldest point in the tree and the common ancestor of all taxa in the analysis. In the absence of a known outgroup, the root can be placed in the middle of the tree or a rootless tree may be generated. Branches of a tree can be grouped together in different ways. (See Figure 4. ) Figure 4.Groups and associations of taxonomical units in trees. A monophyletic group consists of an internal LCA node and all OTUs arising from it. All members within the group are derived from a common ancestor and have inherited a set of unique common traits. A paraphyletic group excludes some of its descendents (for examples all mammals, except the marsupialia Molecular Phylogenetics Karen Dowell 4 taxa). And a polyphyletic group can be a collection of distantly related OTUs that are associated by a similar characteristic or phenotype, but are not directly descended from a common ancestor. 1, 17] Trees and Homology Evolution is shaped by homology, which refers to any similarity due to common ancestry. Similarly, phylogenetic trees are defined by homologous relationships. Paralogs are homologous s equences separated by a gene duplication event. Orthologs are homologous sequences separated by a speciation event (when one species diverges into two). Homologs can be either paralogs or orthologs. [1, 11, 22] Molecular phylogenetic trees are drawn so that branch length corresponds to amount of evolution (the percent difference in molecular sequences) between nodes. 1, 19] Figure 5. Understanding paralogs and orthologs. Paralogs are created by gene duplication events. (See Figure 5. ) Once a gene has been duplicated, all subsequent species in the phylogeny will inherit both copies of the gene, creating orthologs. Interestingly, evolutionary divergence of different species may result in many variations of a protein, all with similar structures and functions, but with very different amino acid sequences. Phylogenetic studies can trace the origin of such proteins to an ancestral protein family or gene. [1, 22] Figure 6. Mirror Phylogenies.Gene A and Gene A1 are paralogs, whereas all i nstances of Gene A are orthologs of each other in different Canid species. One way to ensure that paralogs and orthologs are appropriately referenced in a phylogenetic tree, and guard against misrepresentation due to missing or incomplete taxonomic information is to generate mirror phylogenies (see Figure 6) in which paralogs serve as each otherââ¬â¢s outgroup. [1, 4, 19, 22] Estimating Molecular Phylogenetic Trees Molecular phylogenetic trees are generated from character datasets that provides evolutionary content and context.Character data may consist of biomolecular sequence alignments of DNA, RNA, or amino acids, molecular markers, such as single nucleotide polymorphisms (SNPs) or restriction fragment length polymorphisms (RFLPs), morphology data, or information on gene order and content. Evolution is modeled as a process that changes the state of a character, such as the type of nucleotide (AGTC) at a Molecular Phylogenetics Karen Dowell 5 specific location in a DNA sequence ; each character is a function that maps a set of taxa to distinct states. 1, 19] Note that most of the examples in this paper use DNA sequences as character data, but trees can be accurately estimated from many different types of molecular data. Figure 7. Evolution of a DNA Sequence Figure 7 illustrates how a molecular sequence might evolve over time as a result of multiple mutations that results small, but evolutionarily important changes in a nucleotide sequence. At the protein level, these changes may not initially affect protein structure or function, but over time, they may eventually shape a new purpose for a protein within divergent species. 10, 19, 22] OTUs can be used to build an unrooted phylogenetic tree that clearly depicts a path of evolutionary change. Steps in Phylogenetic Analysis Although the nature and scope of phylogenetic studies may vary significantly and require different datasets and computational methods, the basic steps in any phylogenetic analysis remain t he same: assemble and align a dataset, build (estimate) phylogenetic trees from sequences using computational methods and stochastic models, and statistically test and assess the estimated trees. 4, 19, 20] Assemble and Align Datasets The first step is to identify a protein or DNA sequence of interest and assemble a dataset consisting of other related sequences. For example, to explore relationships among different members of the Notch family of proteins, one might select DNA sequences for Notch1 through Notch4, in different species, such as human, dog, rat, and mouse, then perform a multiple sequence alignment to identify homologies. [1, 10, 13, 19, 20] There are a number of free, online tools available to simplify and streamline this process. DNA sequences of interest can be retrieved using NCBI BLAST or similar search tools.When evaluating a set of related sequences retrieved in a BLAST search, pay close attention to the score and E-value. A high score indicates the subject seque nce retrieved with closely related to the sequence used to initiate the query. The smaller the E-value, the higher the probability that the homology reflects a true evolutionary relationship, as opposed to sequence similarity due to chance. As a general rule, sequences with E-values less than 10-5 are homologs of a query sequence. [10] Once sequences are selected and retrieved, multiple sequence alignment is created.This involves arranging a set of sequences in a matrix to identify regions of homology. Typically, gaps (one or more spaces in the alignment) are introduced in one or more sequences to represent insertions or deletions in the molecular code that may have occurred over time. Effective multiple sequence alignment hinged on gap analysisââ¬âdetermining where to insert gaps and how large to make them. There are many websites and software programs, such as ClustalW, MSA, MAFFT, and T-Coffee, designed to perform multiple sequence on a given set of molecular data. ClustalW i s currently the most mature and most widely used. 1, 10. 19] Molecular Phylogenetics Karen Dowell 6 Building Phylogenetic Trees To build phylogenetic trees, statistical methods are applied to determine the tree topology and calculate the branch lengths that best describe the phylogenetic relationships of the aligned sequences in a dataset. Many different methods for building trees exist and no single method performs well for all types of trees and datasets. The most common computational methods applied include distance-matrix methods, and discrete data methods, such as maximum parsimony and maximum likelihood. 4, 17, 20] There are several software packages, such as Paup*, PAML, PHYLIP, that apply most popular methods. [4] Paup* is a commercially available program that implements a wide variety of methods for phylogenetic inference, including maximum likelihood analysis for DNA data using different models. Paup* also includes a set of exact and heuristic methods for searching optimal trees. PAML (Phylogenetic Analysis by Maximum Likelihood) is open-access set of programs for phylogenetic analysis and evolutionary model comparison.PAML includes many advanced modelsââ¬âDNA- and AAbased models as well as codon-based models that can be used to detect positive selection. Many of the programs in PAML can model heterogeneity of evolutionary rates among sequence sites using ? distributions, and evolutionary dynamics of different sequence regions (concatenated gene sequences). PHYLIP is another large suite of open-access programs for phylogenetic inference that estimates trees using numerous methods, including pairwise distance, maximum parsimony, and maximum likelihood.The maximum likelihood programs can handle a few simple stochastic models and have good tree searching capabilities. PHYLIP is generally considered good educational software for novice phylogeneticists. Distance-Matrix Methods Distance matrix methods compute a matrix of pairwise ââ¬Å"distancesâ⬠between sequences that approximate evolutionary distance. Distance-based methods tend to be in polynomial time and are quite fast in practice. These methods use clustering techniques to compute evolutionary distances, such as the number of nucleotide or amino acid substitutions between sequences, for all pairs of taxa.They then construct phylogenetic trees using algorithms based on functional relationships among distance values. There are several different distance-matrix methods, including the Unweighted Pair-Group Method with Arithmetic Mean (UPGMA), which uses a sequential clustering algorithm; the Transformed Distance Method, which uses an outgroup as a reference, then applies UPGMA; the Neighbor-Relations Method, which applies 4point condition to adjust the distance matrix, then applies UPGMA; and the Neighbor-Joining Method, which arranges OTUs in a star, the finds neighbors sequentially to minimize total length of tree. 4, 17] The following section on the UPGMA method prov ides a more detailed example of how distance-matrix methods work. UPGMA Method UPGMA produces rooted trees for which the edge lengths can be viewed as times measured by a molecular clock with a constant rate. This method uses a sequential clustering algorithm to identify two OTUs that are most similar (meaning they have the shortest evolutionary distance and are most similar in sequence) and treat them as a single new composite OTU. This process is repeated iteratively until only two OTUs remain.The algorithm defines the distance (d) between two clusters Ci and Cj as the average distance between pairs of sequences from each cluster: Molecular Phylogenetics Karen Dowell 7 Where |Ci| and |Cj| are the number of sequences in clusters i and j. This sequential clustering process is visually described in Figure 8. In this example, the two most homologous sequences are 1 and 2. They are clustered into a new composite parent node (6), and the branch lengths (t1 and t2) are defined as 1/2d1,2 . The next step is to search for the closest pair among remaining sequences and node 6.Pair 4 and 5 are identified and clustered into a new parent node (7), and the branch length for t4 and t5 is calculated. [4, 17] Figure 8. Sequential clustering of sequences using the UPGMA method. [17] In this interactive process, parent node 8 is created from pairs 7 and 3, and parent node 9 is created by clustering nodes 6 and 8. [4, 17] Thus, all sequences are clustered into a single evolutionary tree. The total time (t9) can be calculated as: D6,8 = 1/6 (d1,3 + d1,4 + d1,5 + d2,3 + d2,4 +d2,5)Discrete Data Methods Discrete data methods examine each column of a multiple sequence alignment dataset separately and search for the tree that best represents all this information. Although distance-based methods tend to be much faster than discrete data methods, they typically yield little information beyond the basic tree structure. Discrete data analyses, on the other hand, are information rich. The se methods produce a separate tree for each column in the alignment, so it is possible to trace the evolution for specific elements within a given sequence, such as catalytic sites or regulatory regions. 10, 17, 19, 20) Commonly used discrete data methods include maximum parsimony, which searches for the most parsimonious tree that requires the least number of evolutionary changes to explain differences observed, maximum likelihood, which requires a probabilistic model for the process of nucleotide substitution, and Bayesian MCMC, which also requires a stochastic model of evolution, but creates a probability distribution on a set of trees or aspects of evolutionary history. [17, 19, 20] Discrete data methods are generally considered to produce the best estimates of evolutionary history.However, these methods can be computationally expensive, and it can take weeks or months to obtain a reasonable level of accuracy for moderate to large datasets with 100 or more OTUs. [19] Molecular P hylogenetics Maximum Parsimony Karen Dowell 8 Among the most widely used tree-estimation techniques, maximum parsimony applies a set of algorithms to search for the tree that requires the minimum number of evolutionary changes observed among the OTUs in the study. For example, Figure 9 lists four sample sequences from which phylogenetic trees could be inferred using maximum parsimony.Site Seq 1 2 3 4 1 A A A A 2 A G G G 3 G C A A 4 A C T G 5 G G A A 6 T T T T 7 G G C C 8 C C C C 9 A G A G Figure 9. Sample sequences for a maximum parsimony study [17] Maximum parsimony algorithms identify phylogenetically informative sites, meaning the site favors some trees over others. Consider the sequences in Figure 9: Site 1 is not informative, because all sequences at that site (in column 1) are A (Adenine), and no change in state is required to match any one sequence (1-4) to another.Similarly, Site 2 is not informative because all three trees require one change and there is no reason to favor one tree over another. Site 3 is not informative because all three trees require two changes. (See Figure 10). Figure 10. Site 3 trees all require one evolutionary change. [17] Site 4 is not informative because all three trees require three changes. No one tree can be identified as parsimonious. (See Figure 10 Figure 11. Site 4 trees all require three evolutionary changes. [17] Site 5 is informative because one tree requires only one nucleotide change, whereas the other two trees require 2 changes.In Figure 12, the first tree on the left, which requires only one nucleotide change, is identified as the maximum parsimony tree. Figure 12. Site 5 trees vary in the number of evolutionary changes required. [17] Molecular Phylogenetics Maximum Likelihood Karen Dowell 9 The maximum likelihood method requires a probabalistic model of evolution for estimating nucleotide substitution. This method evaluates competing hypotheses (trees and parameters) by selecting those with the highest likeliho od, meaning those that render the observed data most plausible. The ikelihood of a hypothesis is defined as the probability of the data given that hypothesis. In phylogeny reconstruction, the hypotheses are the evolutionary tree (its topology and branch lengths) and any other parameters of the evolutionary model. [17, 20] The likelihood calculations required for evolutionary trees are far from straightforward and usually require complex computations that must allow for all possible unobserved sequences at the LCA nodes of hypothesized trees. This method specifies the transition probability from one nucleotide state to another in a time interval in each branch.For example, for a one-parameter model with rate of substitution ? per site per unit time, the probability that the nucleotide at time t is i is: The probability that the nucleotide at time t is j is: To set up a likelihood function, given x as the ancestral node and y and z as internal nodes, the probability of observing nucle otides i, j, k, l at the tips of the tree is computed as: Pxl(t1+t2+t3)Pxy(t1)Pyk(t2+t3)Pyz(t2)Pzi(t3)Pzj(t3) For the ancestral node (root) x, the probability of having nucleotide l in sequence 4 is calculated as: Pxl(t1+t2+t3)Because x, y, and z can be any one of four nucleotides (ACGT), it is necessary to sum over all possibilities to obtain the probability of observing the configuration of nucleotides i, j, k, l, in sequences 1, 2, 3, 4, for a given hypothetical tree (see Figure 13. ). This likelihood probability is calculated as: h(I,j,k,l)= [? gxPxl(t1+t2+t3)] [? Pxy(t1)Pyk(t2+t3)] [? Pyz(t2)Pzi(t3) Pzj(t3)] The appropriate likelihood function depends on the hypothetical tree and the evolutionary model used. (See Figure 13. ) [17] Figure 13. Different types of model trees for the derivation of the maximum likelihood function. 17] Molecular Phylogenetics Stochastic Models of Evolution Karen Dowell 10 Evolutionary changes in molecular sequences result from mutations, some of whic h occur by chance, others by natural selection. Rates of change can also differ among OTUs, depending on several factors ranging from GC content to genome size. To accurately estimate phylogenetic trees, assumptions must be made about the substitution process and those assumptions must be stated in the form of a stochastic evolutionary model. These probabilistic models are used to rank trees according to likelihood: P(data|tree).From a Bayesian perspective, they rank trees according to a posterior probability: P(tree|data). [17, 20] The objective of probabilistic models is to find likelihood or posterior probability of a particular taxonomic feature, then define and compute: P(x? |T,t ? ) Where x ? is xj for j=1â⬠¦n, T is a tree with n leaves with sequence j at leaf j, and t ? are tree edge lengths. [17] A few popular stochastic models of evolution include the single parameter Jukes-Cantor (JC) method, Kimura 2-parameter (K2P), Hasegawa-Kishino-Yano (HKY), and Equal-Input.Some s oftware programs, such as Paup*, will automatically use a default model for the tree estimation method chosen. The JC method is the easiest one to comprehend, because it assumes that if a site changes its state, it changes with equal probability to the other states. This is not very realistic, however, as some sites are known to evolve more rapidly than others, and some sites may be invariable and not allowed to change at all. Determining how best to select the appropriate model is a topic of another paper (or papers) as there is no one model that incorporates all mutation rules and patterns across different species and macromolecules. 4, 17, 20] Hidden Markov Models Profile hidden Markov models (HMMs) are a form of Bayesian network that provides statistical models of the consensus structure of a sequence family. Gary Churchill at The Jackson Lab was the first evolutionary geneticist to propose using profile HMMs to model rates of evolution. Many software packages and web services n ow apply HMMs to estimate phylogenetic relationships. [8] In the HMM format, each position in the model corresponds to a site in the sequence alignment. For each position, there are a number of possible states, each of which corresponds to a different rate of evolution.In addition, transitions between all possible rate-states at adjacent positions. Transition probabilities capture any tendency for patterns of rates to occur in successive sites. [2, 4] Assessing Trees Tree estimating algorithms generate one or more optimal trees. This set of possible trees is subjected to a series of statistical tests to evaluate whether one tree is better than another ââ¬â and if the proposed phylogeny is reasonable. Common methods for assessing trees include the Bootstrap and Jackknife Resampling methods, and analytical methods, such as parsimony, distance, and likelihood.To illustrate how these methods are used, consider the steps involved in a bootstrap analysis. Bootstrap Analysis A bootstra p is a statistical method for assessing trees that takes its name from the fact that it can ââ¬Å"pull itself up by its bootstrapsâ⬠and generate meaningful statistical distributions from almost nothing. Using bootstrap analysis, distributions that would otherwise be difficult to calculate exactly are estimated by repeated creation and analysis of artificial datasets. In a Non-parametric bootstrap, artificial datasets Molecular Phylogenetics Karen Dowell 11 generated by resampling from original data.In a parametric bootstrap, data is simulated according to hypothesis tested. The objective of any bootstrap analysis is to test whether the whole dataset supports the tree. [1, 4, 17] Figure 14 illustrates the basic steps in any bootstrap analysis. Sample datasets are automatically generated from an original dataset. Trees are then estimated from each sample dataset. The results are compiled and compared to determine a bootstrap consensus tree. Figure 14. Steps in a phylogenetic tr ee bootstrap analysis. [1] Phylogenetic Analysis Tools There are several good online tools and databases that can be used for phylogenetic analysis.These include PANTHER, P-Pod, PFam, TreeFam, and the PhyloFacts structural phylogenomic encyclopedia. Each of these databases uses different algorithms and draws on different sources for sequence information, and therefore the trees estimated by PANTHER, for example, may differ significantly from those generated by P-Pod or PFam. As with all bioinformatics tools of this type, it is important to test different methods, compare the results, then determine which database works best (according to consensus results, not researcher bias) for studies involving different types of datasets.In addition, to the phylogenetic programs already mentioned in this paper, a comprehensive list of more than 350 software packages, web-services, and other resources can be found here: http://evolution. genetics. washington. edu/phylip/software. html. PANTHER ( pantherdb. org) Protein ANalysis Through Evolutionary Relationships, known by its acronym PANTHER, is a library of protein families and subfamilies indexed by function. Panther version 6. 1 contains 5547 protein families. Molecular Phylogenetics Karen Dowell 12It categorizes proteins by evolutionary related proteins (families) and related proteins with same function (subfamilies). [8, 21, 26] PANTHER is composed of both a library and index. The library is a collection of ââ¬Å"booksâ⬠that represent a protein family as a collection of multiple sequence alignments, HMMs, and a family phylogenetic tree. Functional divergence within the tree is represented by dividing the parent tree into child trees and HMMs based on shared functions. These subfamilies enable database curators to more accurately capture functional divergence of protein sequences as inferred from genomic DNA. 25, 26] PANTHER database entries are annotated to molecular function, biological process and pathway with a proprietary PANTHER/X ontology system, which is supposed to be easier to understand than the more global standard Gene Ontology (GO). Database entries in PANTHER are generated through clustering of UniProt database using a BLAST-based similarity score. Trees are automatically generated based on multiple sequence alignments and parameters of the protein family HMMs using the Tree Inferred from Profile Score (TIPS) clustering algorithm.Scientific curators review all family trees, annotate each tree, and determine how best to divide them into subtrees using a tree-attribute viewer that tabulates annotations for sequences in a tree. In addition, trees and subfamilies are manually cross-checked and validated by curators. [25, 26] P-POD (ortholog. princeton. edu) The Princeton Protein Orthology Database (P-POD) combines results from multiple comparative methods with curated information culled from the literature.Designed to be a resource for experimental biologists seeking evolutionary information on genes on interest, P-POD employs a modular architecture, based on their Generic Model Organism Database (GMOD). P-POD can be accessed from their web service or downloaded to run on local computer systems. [12] P-POD accepts FASTA-formatted protein sequences as input, and performs comparative genomic analyses on those sequences using OrthoMCL and Jaccard clustering methods. The P-POD database contains both phylogenetic information and manually curated experimental results.The site also provides many links to sites rich in human disease and gene information. This tool may be particularly helpful for bioinformaticists and statisticians developing comparative genomic database tools and resources. Pfam (pfam. sanger. ac. uk/) PFam is a collection of protein families represented by multiple sequence alignments and HMMs. It contains models of protein clans, families, domains, and motifs, and uses HMMs representing conserved functional and structural domains. It is a large, widely used, actively curated mature database that has been available online since 1995.Pfam can be used to retrieve the domain architectures for a specific protein by conducting a search using a protein sequence against the Pfam library of HMMs. This database is also helpful for proteomes and protein domain architecture analysis. [6, 8, 24] There are two versions of the Pfam database: Pfamââ¬âB is generated automatically from ProDom, using PsiBLAST, an open access bioinformatics tool available through NCBI for identifying weak, but biologically relevant sequence similarities. Pfam-A is hand-curated from custom multiple sequence alignments. Pfam protein domain families are clustered with Mkdom2, and aligned with ProDomAlign.ProDom is a comprehensive set of protein domain families automatically generated from the SWISSPROT and TrEMBL sequence databases. Mkdom2 is a ProDom program used to make ProDom family clusters. Protein domain families in ProDom were aligned using an improved parallelized program called Molecular Phylogenetics Karen Dowell 13 ProDomAlign, developed in C++ using OpenMP. ProDomAlign is based on MultAlign, a program well suited for aligning very large sequence families with thousands of associated sequences. As of early 2008, Pfam matched 72 percent of known proteins sequences, and 95 percent of proteins for which there is a known structure.Within the Pfam database, 75 percent of sequences will have one match to Pfam-A, 19 percent to Pfam-B. There are also two versions of Pfam-A and Pfam-B. Pfam-ls handles global alignments, and Pfam-fs is optimized for local alignments. Interestingly, Pfam entries can be classified as ââ¬Å"unknown,â⬠but that doesnââ¬â¢t mean the protein is undocumented. Unknown entries can be proteins for which some information is known, but it has not been fully researched or cannot be adequately annotated. For example, Pfam entry PFO1816 is a LeucineRich Repeat Variant (LRV), which has a known structure (1LRV ) available in the Protein Databank (pdb. rg). LRV repeat regions, which are found in many different proteins, are often involved in cell adhesion, DNA repair, and hormone receptionââ¬âbut identification of an LRV within a sequence encoding a protein doesnââ¬â¢t specifically reveal the proteinââ¬â¢s function. For studies involving a large number of protein searches, it may be more convenient to run Pfam locally on a client machine. The standalone Pfam system requires the HMMER2 software, the Pfam HMM libraries and a couple of additional files from the Pfam website to be installed on the client machine. HMMER is a freely distributable implementation of profile HMM software for protein sequence analysis. ) Once the initial search is complete, researchers can go to the Pfam website to further analyze select number of sequences using additional features on website. [6, 8, 24] TreeFam (TreeFam. org) TreeFam is a curated database of phylogenetic trees and orthology predictions f or all animal gene families that focuses on gene sets from animals with completely sequenced genomes. Orthologs and paralogs are inferred from phylogenetic tree of gene family.Release 4 contains curated trees for 1314 families and automatically generated trees for another 14351 families. [16, 23] Like Pfam, TreeFam is a two-part database: TreeFam-B contains automatically generated trees, and TreeFam-A consists of manually curated trees. To automatically generate trees, an algorithm selects clusters of genes to create TreeFam-B ââ¬Å"seedsâ⬠from core species with high-quality reference genome sequences, first using BLAST to rapidly assemble an initial list of possible matches, then HMMER to expand and filter probable sequence matches for each TreeFam B seed family.The filtered alignment is fed into a neighbor-joining algorithm and a tree is constructed based on amino acid mismatch distances. For TreeFam version 4, the most current release, five ââ¬Å"cleanâ⬠family trees were built for each TreeFam B seed, two using a maximum likelihood tree generated using PHYML (one based on the protein alignment, the other on codon alignment), three using a neighbor joining tree, using different distance measurements based on codon alignments. 16, 23] Scientific curators then manually any correct errors (based on information in the literature) in automatically generated TreeFam-B trees. Curated TreeFam-B trees then become seeds for TreeFam-A trees. Clean TreeFam-A trees are build using three merging algorithms and bootstrapping to find the consensus tree of seven trees: two constrained maximum likelihood trees based on protein and codon alignment, and five unconstrained neighbor-joining trees generated using different distance measurements based on codon alignments.For both TreeFam-B and TreeFam-A families, orthologs and paralogs are inferred only from clean trees using Duplication/Loss Inference (DLI) algorithm that requires a species tree (NCBI taxonomy tree). [16, 23] Molecular Phylogenetics PhyloFacts (phylogenomics. berkeley. edu/phylofacts) Karen Dowell 14 PhyloFacts is an online phylogenomic encyclopedia for protein functional and structural classification. It contains more than 57,000 ââ¬Å"booksâ⬠for protein superfamilies and structural domains.Each book contains heterogenous data for protein families, including multiple sequence alignments, one or more phylogenetic trees, predicted 3-D protein structures, predicted functional subfamilies, taxonomic distributions, GO annotations, and PFAM domains. HMMs constructed for each family and subfamily permit novel sequences to be classified to different functional classes. [14] Unlike other databases mentioned in this paper, PhyloFacts seeks to correct and clarify annotation errors associated with computational methods for predicting protein function based on sequence homology.It uses a consensus approach that integrates many different prediction methods and sources of experimental data over an evolutionary tree. By applying evolutionary and structural clustering of proteins, PhyloFacts is able to analyze disparate datasets using multiple methods, identify potential errors in database annotations, and provide a mechanism for improving the accuracy of functional annotation in general. [14] PhyloFacts can be used to search for protein structure prediction or functional classification for a particular protein sequence.Researchers may also browse through protein family books and multiple sequence alignments, phylogenetic trees, HMMs and other pertinent information for proteins of interest. This webservice also provides many links to literature and other information sources. [14] Applied Molecular Phylogenetics Molecular phylogenetic studies have many diverse applications. As the amount of publically available molecular sequence data grows and methods for modeling evolution become more sophisticated and accessible, more and more biologists are incorporating phylog enetic analyses into their research trategy. Hereââ¬â¢s a sampling of how molecular phylogenetics might be applied. Tracing the evolution of man In one case study, molecular phylogenetic techniques were used to compare and analyze variation in DNA sequences using modern human and Neanderthal mitochondrial DNA (mtDNA). For this study, 206 modern human mtDNAs and parts of two Neanderthal mtDNAs sequences derived from skeletal remains were used to generate an initial dataset. Genetic distance was first estimated using the Jukes-Cantor single parameter model.Then the Kimura 2-Parameter model was used to distinguish between transition (replacement of one purine with another purine or one pyrimidine with another pyrimidine) and transversion (replacement of one purine with a pyrimidine or vice versa) probabilities with Kimura 2parameter model. A phylogenetic tree representing primate evolution was generated using pairwise genetic distances between primate Hypervariable regions I and II of mtDNA. [3] Chasing an epidemic: SARS Using publically available genomic data, it is possible to reconstruct the progression of the SARS epidemic over time and geographically.To conduct this phylogenetic analysis, researchers used the neighborjoining method to construct a phylogenetic tree of spike proteins in various coronaviruses and identify the viral host (a Himalyan palm civet). They then obtained 13 SARs genome sequences with documented information on the date and location of the sample. The neighbor-joining method and a distance matrix based on Jukes-Cantor model, were used to generate an epidemic tree, from which it was possible to identify the origin (date and location) of the virus by observing progression of mutations over time. 3] Molecular Phylogenetics Barking up the right tree Karen Dowell 15 Phylogenetics is increasingly incorporated into biological and biomedical research papers. When the canine genome was published, researchers used sequence data to estimate a co mprehensive phylogeny of the canid family. Figure 15. Phylogenetic Tree of the Canid family This canid family phylogenetic tree is based on 15 kb of exon and intron sequence. It was constructed using the maximum parsimony method and represents the single most parsimonious tree.A good example of how phylogenies are referenced in the literature, this tree includes bootstrap values and Bayesian posterior probability values listed above and below internodes, respectively. Dashes indicate bootstrap values below 50%. In addition, divergence time in millions of years (Myr) is indicated for three nodes. [18] Seeing the Forest from the Trees Molecular phylogenetics is a broad, diverse field with many applications, supported by multiple computational and statistical methods. The sheer volumes of genomic data currently available (and rapidly growing) render molecular phylogenetics a key component of much biological research.Genome-scale studies on gene content, conserved gene order, gene expre ssion, regulatory networks, metabolic pathways, functional genome annotation can all be enriched by evolutionary studies based on phylogenetic statistical analyses. [19, 25 27] Molecular phylogenies have fast become an integral part of biological research, pharmaceutical drug design, and bioinformatics techniques for protein structure prediction and multiple sequence alignment. Although not all molecular biologists and bioinformaticians may be familiar with the techniques describedMolecular Phylogenetics Karen Dowell 16 in this paper, this is a rapidly growing and expanding field and there is ongoing need for novel algorithms to solve complex phylogeny reconstruction problems. References 1. Baldauf, SL (2003) ââ¬Å"Phylogeny for the faint of heart: a tutorial. â⬠Trends in Genetics, 19(6):345-351. 2. Brown, D, K Sjolander (2006) ââ¬Å"Functional Classification Using Phylogenomic Inference. â⬠PLos Computational Biology, 2(6):0479-0483. 3. Cristianini, N, and M Hahn (2007 ) Introduction to Computational Genomics: A Case Studies Approach.Cambridge University Press: Cambridge. 4. Durbin, R, S Eddy, A Krogh, G Mitchison (1998) Biological Sequence Analysis. Cambridge University Press: Cambridge. 5. Ewens, WJ, R Grant (2005) Statistical Methods in Bioinformatics. Springer Science and Business Media: New York. 6. Finn, RD, J Tate, J Mistry, PC Coggill, SJ Sammut, HR Hotz, G Ceric, K Forslund, SR Eddy, ELL Sonnhammer, A Bateman (2008) ââ¬Å"The Pfam protein families database. â⬠Nucleic Acids Research, 36:D281288. 7. Gabaldon, T (2008) ââ¬Å"Large-scale assignment of orthology: back to phylogenetics? Genome Biology, 9:235. 1-235. 6. 8. Gollery, M. (2008) Handbook of Hidden Markov Models in Bioinformatics. CRC Press, Taylor & Francis Group: London. 9. Goodstadt, L, CP Ponting (2006) ââ¬Å"Phylogenetic Reconstruction of Orthology, Paralogy, and Conserved Synteny for Dog and Human. â⬠PLoS Computational Biology, 2(9):1134-1150. 10. Hall, BG. (2004 ) Phylogenetic Trees Made Easy: A How-To Manual, 2nd ed. Sinauer Associates, Inc. : Sunderland, MA. 11. Hartwell, LH, L Hood, ML Goldberg, AE Reynolds, LM Silver, RC Veres (2008) Genetics: From Genes to Genomes, 3rd Ed.McGraw-Hill: New York. 12. Heinicke, S, MS Livstone, C Lu, R Oughtred, F Kang, SV Angiuoli, O White, D Botstein, K Dolinski (2007) ââ¬Å"The Princeton Protein Orthology Database (P-POD): A Comparative Genomics Analysis Tool for Biologists. â⬠PLoS ONE, 8:e766. 1-15. 13. Kortschak, RD, R Tamme (2001) ââ¬Å"Evolutionary analysis of vertebrate Notch genes. â⬠Dev Genes Evol, 211:350-354. 14. Krishnamurthy, N, DP Brown, D Kirshner, K Sjolander (2006) ââ¬Å"PhyloFacts: an online structural phylogenomic encyclopedia for protein functional and structural classification. â⬠Genome Biology, 7:R83. -13. 15. Kuzniar, A, RCHJ van Ham, S Pongor, JAM Leunissen (2008) ââ¬Å"The quest for orthologs: finding the corresponding gene across genomes. â⬠Trends in G enetics, 24(11):539-551. Molecular Phylogenetics Karen Dowell 17 16. Li, H, A Coghlan, J Ruan, LJ Coin, JK Heriche, L Osmotherly, R Li, T Liu, Z Zhang, L Bolund, GKS Wong, W Zheng, P Dehal, J Wang, R Durbin (2006) ââ¬Å"TreeFam: a curated database of phylgenetic trees of animal gene families. â⬠Nucleic Acids Research, 34:D573-580. 17. Li, WH (1997) Molecular Evolution. Sinauer Associates: Sunderland, MA. 18.Lindblad-Toh, K, CM Wade, TS Mikkelsen, EK Karlsson, DB Jaffe, M Kamal, M Clamp, JL Chang, EJ Kulbokas III, MC Zody, E Mauceli, X Xie, M Breen, RK Wayne, EA Ostrander, CP Ponting, F Galibert, DR Smith, PJ deJong, E Kirkness, P Alvarez, T Biagi, W Brockman, J Butler, C Chin, A Cook, J Cuff, MJ Daly, D DeCaprio, S Gnerre, M Grabherr, M Kellis, M Kleber, C Bardeleben, L Goodstadt, A Heger, C Hitte, L Kim, KP Koepfli, HG Parker, JP Pollinger, SMJ Searle, NB Sutter, R Thomas, C Webber, ES Lander (2005) ââ¬Å"Genome Sequence, Comparative Analysis and Haplotype Structure of the Domestic Dog.Nature, 438:803-819. 19. Linder, CR, T Warnow (2005) ââ¬Å"An overview of phylogeny reconstruction. â⬠In the Handbook of Computational Molecular Biology, Chapman and Hall/CRC Computer & Information Science. 20. Lio, P, N Goldman (1998) ââ¬Å"Models of Molecular Evolution and Phylogeny. â⬠Genome Research, 8:12331244. 21. Mi, H, N Guo, A Kejariwal, PD Thomas (2007) ââ¬Å"PANTHER version 6: protein sequence and function evolution data with expanded representation of biological pathways. Nucleic Acids Research, 35:D247-252. 22. Patthy, Laszlo. (1999) Protein Evolution. Blackwell Science, Ltd: Malden, MA. 23. Ruan, J, H Li Z Chen, A Coghlan, LJM Coin, Y Guo, JK Heriche, Y Hu, K Kristiansen, R Li, T Liu, A Mose, J Qin, S Vang, AJ Vilella, A Ureta-Vidal, L Bolund, J Wang, R Durbin (2008) ââ¬Å"TreeFam: 2008 Update. â⬠Nucleic Acids Research, 36:D735-740. 24. Sammut, SJ, RD Finn, A Bateman (2008) ââ¬Å"Pfam 10 years on: 10000 families and still growing. â ⬠Briefings in Bioinformatics, 9(3):210-219. 5. Thomas, PD, A Kejariwal, N Guo, H Mi, MJ Campbell, A Muruganujan, B Lazareva-Ulitsky (2006) ââ¬Å"Applications for protein sequence-function evolution data: mRNA/protein expression analysis and coding SNP scoring tools. â⬠Nucleic Acids Research, 34:W645-650. 26. Thomas, PD, MJ Campbell, A Kejariwal, H Mi, B Karlak, R Daverman, K Diemer, A Muruganujan, A Narechania. ââ¬Å"PANTHER: A Library of Protein Families and Subfamilies Indexed by Function. â⬠Genome Research, 13:2129-2141. 27.Warnow, T (2004) ââ¬Å"Computational Methods in Phylogeneticsâ⬠Computational Systems Biology Conference, Stanford, CA 28. Whelan, S, P Lio, N Goldman (2001) ââ¬Å"Molecular phylogenetics: state of the art methods for looking into the past. â⬠Trends in Genetics, 17(5):262-272. Molecular Phylogenetics Karen Dowell 18 Appendix Website Resources Phylogeny Programs. A University of Washington site formerly supported by the National Science Foundation. http://www. evolution. genetics. washington. edu/phylip/software. tml TreeFam Tree Families Database. http://wwww. treefam. org Protein Analysis Through Evolutionary Relationships (PANTHER) Classification System. http://www. pantherdb. org. 29. Pfam Database of Protein Families. http://pfam. sanger. ac. uk 30. Princeton Protein Orthology Database (P-POD). http://ppod. princeton. edu 31. Wikipedia. http://en. wikipedia. org/wiki/Tree_of_life(science) Cover Page The cover image is from a phylogeny of canid species that appeared in Lindblad-Toh et al, 2005. [18]
Friday, November 8, 2019
Works of Hemingway and Remarque essays
Works of Hemingway and Remarque essays In both books, A Farewell to Arms by Ernest Hemingway, and All Quiet on the Western Front by Erich Maria Remarque, the subject of war is seen in two strikingly different perspectives. War was thought to be productive and necessary by the older generation and central political figures, but when one hears the viewpoint of the young men who actually had to encounter it, it is a much different story. War affects the lives of people in ways that the average person cannot even begin to comprehend. The end result of the war produced a group of men coming home, who were so disillusioned and lost that they were referred to as The Lost Generation. Ernest Hemingway can find an example of the Lost Generation in the book, A Farewell to Arms. The main character, Lieutenant Frederick Henry was a prime candidate for the Lost Generation of men. Henry, who was an ambulance driver on the Italian Front found through harsh experiences, that war was not at all promising and glorious as he had thought, but that it was unessicary and truly horrible. After he had become ill and gotten out of the war, Henry felt that there was just no points to it, and he was exhausted. Hemingway wrote many different accounts of post- war experiences, and the lost generation of men that it produced. A book that is filled with references and description of the Lost Generation is All Quiet on the Western Front, by Erich Maria Remarque. Remarque, who himself had been drafted into the German army, came out completely lost and disillusioned. He went through many different jobs, not knowing what he wanted out of life anymore. Like Remarque, Paul, the main character of All Quiet, went into the war full of hopes and dreams of the life he would someday live. He was just a young boy, and was forced to serve in a war, which he hardly even knew or cared anything about. During the war, Paul went through so many terrible and shocking experiences that he knew woul...
Wednesday, November 6, 2019
The Success of Woolworths Essays
The Success of Woolworths Essays The Success of Woolworths Essay The Success of Woolworths Essay The following report will investigate the Australian retail/grocery supermarket Woolworths and its parent company Woolworths Limited. This report will explore the success Woolworths and its contribution to the Australian economy. It will examine the following subjects: * About Woolworths * Business Structure * Responsibilities to Stakeholders * Internal and External Influences * Strategies for Future Growth About Woolworths Woolworths is a conventional supermarket owned by Woolworths Limited. It started as a basement store in Pitt Street in 1924, and is now one of the leading competitors in the supermarket business.With over 850 stores in Australia, and 110,000 Woolworths staff, they provide their customers with great service, products and price. With 96% of their fresh fruits and vegetables are Australian grown and 100% of their beef is Australian made, the aim to live to their slogan ââ¬Ëthe fresh food peopleââ¬â¢. They aim to develop long-term relatio nships with their producers and farmers, to have a consistent quality of fresh produces. Business Structure * Size Woolworths is classified as a national company. * Location Woolworths run their business in Australia, having a store in almost every regional and metropolitan area. Industry Type Woolworths is a tertiary retail company, providing the service to sell products made from other companies. * Legal Structure Woolworths is a subsidiary company, owned by Woolworths Limited. Responsibilities to Stakeholders Woolworths holds many responsibilities that their various stakeholders expect. They have taken the measure to make sure that the correct steps are taken to uphold these responsibilities. Stakeholders| Responsibility| Measures Taken| Investors| Competitive ROI, and being informed on the path the company takes| Quarterly investor briefings, open to all shareholders. Employees| Safe and healthy workplace | ââ¬ËDestination ZEROââ¬â¢, a project that plans to have zero harm to the employees. | Customers| Great service, and value for their money| Monitoring on the Australian shopping behavior and implements ideas that benefit the customers| Environment| Minimizing the impact on climate change and carbon footprint| $55. 7 million was spent energy efficient technology| Internal and External Influences Woolworths has been impacted both internally and externally to become what it is today. They have responded to these influences as they see fit.Internal Influences Marketing Strategies Woolworths has capitalized on the idea of becoming ââ¬Ëthe fresh food peopleââ¬â¢. They have implemented various different ways to approach the customers by informing them of healthy food choices, as well as fresh food facts. They have created a website that informs them of how and where their produces are made. They create commercials of ââ¬ËFresh Market Updateââ¬â¢, which summarizes which fruits and vegetables are in season. Their magazines, the Fresh magazine an d Australian Good Taste, are a monthly magazine that shows healthy recipes to recreate.This marketing push on their slogan reassures the customers that their choice in retailer to buy from is the healthiest choice. Location With over 850 store across Australia, customers are much more connected to the business. They are located in almost every metropolitan and regional area, with their fruits and meat suppliers close to the eastern suburbs. Figure 1 Source: woolworthsfacts. com. au/our-suppliers. php This strategy to keep most of their supplier close to the eastern suburbs can significantly decrease travel time; make sure they have the freshest fruits and meat to sell.Not only does their supplierââ¬â¢s location important, but also the storeââ¬â¢s location is also strategically placed. As most of their stores are located in suburb areas, they are located in shopping centres that could attract the most visibility and exposure. Figure 2 Source: woolworthsfacts. com. au/our-supp liers. php Figure [ 2 ] Source: woolworthsfacts. com. au/our-suppliers. php Visibility Directly linking to location, visibility for any business is crucial for attracting customers. Woolworths can be located in different shopping centres that may also contain other competing supermarkets.This allows the customer to compare their prices to their competitors. Another benefit for visibility having exposure in busy and populated areas. For example, Woolworthsââ¬â¢ large store in Pitt Street, Sydney is in a central hub of the city. They are able to gain a large amount of visibility and can attract the potential customers walking past. External Influences Economical The typical Australian household is budgeting their expenses due to the rising prices of everyday living. They have counteracted this by giving their customers a special sale of a different variety of products every week.This has allowed the customers to be able to spend less but still be able to get the same products they desired. Technology The accelerating technology today is rapidly increasing and people are becoming more connected to each other. The use of apps in phones is becoming more frequent and everything is becoming on-the-go. Woolworths has created a Woolworths App to seek an opportunity to connect to this audience. It is able to tell what is on season, what products are on special, as well as being able to create shopping lists with prices.Social Media The rise of technology has also given the rise to social networks. Many companies have risen to generate publicity within these social networks. Websites such as Facebook, Twitter and YouTube are the few names that Woolworths has created its Internet publicity. Strategies for Future Growth International Presence As of now, Woolworths is a household name across Australia. It is known best for its fresh produces and service. Their presence in the world has already reached New Zealand, with over 100 stores.A strategy for growth could be spre ading to different countries neighboring Australia, such as the South East Asian countries. This can help build relationships with neighboring countries and able to seek new customers on an international level. Pre-Prepared Meals and Home delivery Another recommendation would be having pre-prepared meals delivered to the doorstep. A problem most family households have is having the time to shop in the supermarket and cook. These pre-prepared meals will start off as a survey on how large your family is, as well as the variety of food they like to eat.These deliveries will also contain the other items you would likely get from the store. Summary The report above addresses Woolworths and its parent company Woolworths Limited the success and contribution to the Australian economy. The report identifies its business structure, responsibility to their stakeholders, explained 6 various influences (both internal and external) to their success in Australia and recommends strategies for futur e growth.
Sunday, November 3, 2019
Organizational culture Research Paper Example | Topics and Well Written Essays - 1750 words
Organizational culture - Research Paper Example Generally, it is unlikely for two organizations to have the same culture as it depends on the management, the environment, type of work and other factors which vary from organization to organization. It is important for the employees to adjust in the organizational culture in order to enjoy their work and stay formed with each other (Schabracq, 2009). There are several theories and to represent them, several models have been proposed to explain the organization culture. One of the models was presented by Charles Handy and was called the Charles Handy model. Charles Handy was an Irish who was born in 1932. He was a philosopher and had specialized in organizational behavior and management. He has been known as one of the most influential management thinkers living because of his contribution towards his professional grounds. He has also written many articles specialized in his field for many universities including Harvard. He presented his model in which he emphasized on four types of organizational cultures (Armstrong, Stephens, 2005). ââ¬Å"Power Cultureâ⬠explains that in some organizations the power is given in the hands of few people only who are authorized to take the decisions. This power is concentrated to small groups of people or the centralized figure which controls from the center like a web. These groups of people enjoy special benefits at the workplace and they are the most important people as they are the decision makers. Their role is to then delegate the responsibilities to the employees junior to them. In this type of culture, the junior employees are meant to follow the instructions strictly and they do not even have the freedom to express their ideas and views. The most likely reason for unrest in this type of culture is managers becoming partial to one employee or the other (Handy, 2007). ââ¬Å"Role
Friday, November 1, 2019
The Power of Thinking or Feelings in Crest and Vaseline Advertisements Essay
The Power of Thinking or Feelings in Crest and Vaseline Advertisements - Essay Example Vaseline persuasively uses pathos because of its emphasis on the word ââ¬Å"feel,â⬠so that the audience can ââ¬Å"feelâ⬠its sincerity regarding the benefits of its product, and then it expounds on the scientific backup of these benefits to fully convince the audience that it is the best lotion in the market. The main positioning statement of the ad is ââ¬Å"feels good, does well.â⬠The statement is simple, but its meanings are varied. Vaseline uses the words ââ¬Å"feelâ⬠and ââ¬Å"goodâ⬠to underline emotions. It is stating that its lotion feels good on the skin while providing emotional benefits too. Instead of just stressing its ingredients, it centers on the resulting ââ¬Å"feelings,â⬠which is related to ââ¬Å"goodness.â⬠Another impact of the feelings of goodness is having a good day. When people feel good, they tend to do well in school, work, and home. Feeling good starts the day with happiness and improves quality of life. After the short introduction on what the product makes consumers feel, a longer explanation is below it, where scientific words are added. The long paragraph stresses that the product is the ââ¬Å"next generationâ⬠of Vaseline lotion, which suggests that it is current and not an ââ¬Å"oldâ⬠formula. The words ââ¬Å"pureâ⬠and ââ¬Å"naturalâ⬠make Vaseline a ââ¬Å"naturalâ⬠product, even when it has chemicals too. The main goal is to relate Vaseline with the goodness of ââ¬Å"Nature,â⬠but one that is scientifically tested and perfected. The words ââ¬Å"new formulaâ⬠and ââ¬Å"infuse moisture deep downâ⬠accentuate that the product is the latest tested formula that goes beyond other usual lotions. The ââ¬Å"rich feel and glowing skinâ⬠is a suitable end, since many consumers want their skin feeling smooth and looking young and fresh. To reinforce its sincerity further, another strategy of Vaseline is its ââ¬Å"Money Back Guarantee.â⬠The ad has a blue stamp, a stamp that symbolizes something assured and permanent. It contains the words ââ¬Å"Vaseline Promise.â⬠The word promise is like a friend making a promise to another friend. If customers will not feel the difference after using the product, Vaseline challenges them to return the lotion to it. This way, customers feel secure in using the product. Again, positive feelings take center stage. The ad starts with good vibes, the vibes of feeling and looking good. Then, it follows up the good vibes with a promise of ââ¬Å"money back,â⬠if these ââ¬Å"feelingsâ⬠are not attained. Vaseline effectively uses matching words and promises to convey a strong message of skin luxuriousness to its audiences. The font and white background highlight that Vaseline has nothing to hide. The font of ââ¬Å"feels good, do goodâ⬠is sans serif, which makes it informal and playful. It does not even start with a capital letter and does not end with a period. Th e way it is written looks hip and young. In other words, it exudes with innocence. The white background suggests purity too.Ã
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