The Scarlet Ibis by James Hurst Essay - 1691 Words

Have your parents ever told you that you needed to improve at something? It could be a sport, activities, or even how well you do in school. This is a vile thing for parents to do to their children. Sometimes parents just need to back up a few steps and let you be yourself. The same can happen with an older sibling! That is the case in The Scarlet Ibis by James Hurst. The narrator of this story has a younger brother called Doodle, who has some health issues. Big brother pushes little brother to be better than he is. In The Scarlet Ibis, Doodle strives for the goals that his brother sets for him for many reasons, which reflects the conflict in the story. To begin, in The Scarlet Ibis, Doodle strives for these goals because he wants†¦show more content†¦The brother’s criteria for being normal is very precise, as Doodle is expected to be indomitable. This creates conflict between Doodle and society, which is external conflict. Finally, in The Scarlet Ibis, Doodle strives for these objectives because he is dependent on his brother. Perhaps he is even scared that if he doesn’t do what his brother asks, then he will no longer have help from him. This is supported when they are in the loft and the narrator says, â€Å"And before I’ll help you down from the loft, you’re going to have to touch it.† (Page 387). He is threatening to leave Doodle up in the loft, all alone, until he touches the mahogany box which was to be his coffin. Doodle becomes very frightened by this intimidation, which is probably the cause of his fear later in the story. This causes conflict between Doodle and his older sibling because Doodle basically cannot do anything without his brother, and if he is left, he becomes panicked. Obviously, in The Scarlet Ibis, Doodle has many reasons to strive for the targets set by his brother, even though he does not have a competitive nature. One reason is that he wants to make his brother proud, which causes internal conflict for the narrator. Also, he wants to be an ordinary boy and fit in, which creates a fray between Doodle and humanity. Lastly, he is dependent on his brother and fears that he might beShow MoreRelatedThe Scarlet Ibis By James Hurst967 Words   |  4 PagesThe story of a miracle unfolding and a brother motivating is one named,† The scarlet Ibis.† This story is written by James Hurst. In â€Å"The Scarlet Ibis†, one will find, two brothers; one with the desire to run and play, named Doodle, and the other with the desire to have someone to run and play with, the narrator. Doodle had a desire to be a normal child but was born handicapped. He was a child who no one thought would live more than 2 days. However, he lived longer than that and it was soon discoveredRead More The Scarlet Ibis by James Hurst Essay711 Words   |  3 PagesThe Scarlet Ibis by James Hurst Foreshadowing, symbolism, and image are all elements which compose style.   All are very important; foreshadowing adds suspense, and symbolism contributes to interpretation.   Image contributes visual aids which, also, aid interpretation.   In this classic short story, The Scarlet Ibis, by James Hurst, foreshadowing, symbolism, and image combine to create a true literary masterpiece. Foreshadowing is one of the elements of style which make The ScarletRead MoreCharacters And Themes In Scarlet Ibis By James Hurst955 Words   |  4 Pagesbeing an older brother and isn’t quite liking him since he has a disability and tried to make him normal just so he can make himself feel better but the story ended with doodle the little boy dying and his brother feeling guilt. In the story Scarlet Ibis, james Hurst expresses that we shouldn’t try to change others through indirect characterization, symbolism, and the dark and sad tone. The characterization of the main character analyzes how cruel and rude he is the to his brother. When doodleRead MoreThe Theme Of Love In The Scarlet Ibis By James Hurst1123 Words   |  5 Pages Each and every individual is given the ability to love, however not all have the strength and courage to embrace it. Love is the most important aspect of life, but not all can accept an individuals differences. James Hurst expresses this hardship in his story â€Å"The Scarlet Ibis†. Hurst displays the importance of acceptance between two brothers, Brother and Doodle. Doodle is born with a disability that sets him apart from other children his age. Brother cannot accept the fact that his little brotherRead MoreThe Themes Of A Brother In The Scarlet Ibis By James Hurst958 Words   |  4 PagesThe short story I am basing of is the â€Å"Scarlet Ibis†. The book was written by James Hurst and is tragedy. The brother I am choosing is going to be the unnamed brother from â⠂¬Å"Scarlet Ibis†. The story is about a boy who wants a brother to play with but when he gets a brother, he is challenged physically and in the beginning they thought he was mentally challenged to. The brother in the story cares about his brother but his tolerance of his disabilities throughout the story dwindles. I think that theRead MoreStriving to Achieve Goals in The Scarlet Ibis by James Hurst Essays620 Words   |  3 Pagesus because they make us want to get something done. In the short story, â€Å"The Scarlet Ibis† by James Hurst, Doodle strives for the goals that the narrator sets because his brother pushes him to and because he wants to do something no one thinks he can do, also the goals reflect the conflict that the narrator feels about Doodle because Doodle is crippled. First, in the short story, â€Å"The Scarlet Ibis† by James Hurst, Doodle strives for the goals that the narrator sets because his brother pushesRead MoreEssay on Love Kills in The Scarlet Ibis by James Hurst584 Words   |  3 Pagescharacters until they feel as if they know them personally. Readers of the story find very specific details about the story and make many very clever connections between the strangest of things in the story but they make perfect sense. In the story, The Scarlet Ibis, many extremely surprising facts about the story were linked in a very macabre way and they were rather interesting. Many of these connections have been dissected and discussed very thoroughly, but many more challenges and connections can stillRead MoreThe Scarlet Ibis Analysis1415 Words   |  6 Pagesdreaded because there is an unpredictable world of adulthood waiting with no guarantees. James Hurst demonstrates the journey of growing up through life experiences everyone goes th rough in the short story, â€Å"The Scarlet Ibis†. Throughout his use of mood, setting, and symbolism, Hurst shows that maturing requires reflecting on past experiences and losing innocence, which then can transform one’s outlook on life. Hurst uses the mood of the story to convey the characters’ feelings and tells the audienceRead MoreThe Scarlet Ibis Analysis1001 Words   |  5 PagesJames Hurst is the author of the heart breaking short story entitled â€Å"The Scarlet Ibis†. â€Å"The Scarlet Ibis† is a short story about two brothers; one brother is healthy, while the other is physically handicapped. The short story is centered on the idea that the older, healthier brother’s selfishness and pride ultimately led to the death of his younger brother, Doodle. Numerous quotes throughout the story demonstrate Hurst’s use of symbolism and foreshadowing to portray and predict Doodle’s untimelyRead MoreThemes Of Symbolism In The Scarlet Ibis844 Words   |  4 Pagesoften used in literature to bring a deeper meaning to a story or work. These meanings can emphasize or intensify feelings of anything from love and hope, to danger and sadness. James Hurst uses symbolism in his work, â €Å"The Scarlet Ibis†, to convey and emphasize some of these feelings and ideas in his story. â€Å"The Scarlet Ibis† centers around the lives of Brother, a very driven and determined child, and his younger brother, Doodle, an innocent and naive individual with a heart condition that causes doctors

Development of the Cardiovascular System in Vertebrate Embryos Free Essays

The cardiovascular system is the first organ system to become fully functional in the vertebrate embryo and its development occurs in a similar way in all vertebrates. It is derived from angioblastic tissue, which arises from mesenchyme, an aggregation of mesenchymal cells derived from the mesodermal tissue of embryos. The main processes involved in the development of the embryonic cardiovascular system are Vasculogenesis, Angiogenesis, Hematopoiesis, Erythropoiesis and Heart Formation. We will write a custom essay sample on Development of the Cardiovascular System in Vertebrate Embryos or any similar topic only for you Order Now All processes occur under the influence of stimuli from genes and paracrine factors, oligosaccharides, multifunctional cytokines and enzymes. Vasculogenesis and Angiogenesis Two distinctive mechanisms, vasculogenesis and angiogenesis implement the formation of the vascular network in the embryo. Embryonic vasculogenesis gives rise to the heart and the primordial vascular plexus within the embryo and its surrounding membranes as the yolk sac circulation. In mammals, it occurs in parallel to hematopoiesis, the formation of blood cells. Vasculogenesis refers to the in situ differentiation and growth of new blood vessels from mesenchymal cells known as angioblasts which aggregate to form isolated angiogenic cell clusters known as blood islands (angiocysts) within the extra-embryonic and intra-embryonic mesoderm. Small cavities appear within these blood islands by the confluence of intercellular clefts. The peripheral cells within these blood islands flatten to form endothelial cells, triggered by the binding of the Vascular Endothelial Growth Factor (VEGF) to the first of its two receptors, the VEGF-R2 (Flk1) protein, which is responsible for the differentiation of mesodermal cells into endothelial cells and the subsequent proliferation of the endothelial cells. The core cells give rise to blood cells (haematoblasts). The newly formed endothelial cells arrange themselves around the cavities in the blood islands, forming the primitive endothelium. Cellular vacuoles within the developing endothelial cells coalesce and fuse together without cytoplasmic mixing to forma the blood vessel lumen of the initial endothelial tube. Extracellular matrix deposition by fibroblasts promotes capillary-like tube formation under the influence of the binding of VEGF to its second receptor, VEGF-R1 (Flt1). This is followed by the interaction of the endothelial blood vessel with the supporting mesodermal cells. The Angiopoietin-1 growth factor binds to the Tie2 receptor tyrosine kinase on the cell membrane of the endothelial cells, allowing the blood vessel to recruit the peri-endothelial cells that will surround it as pericytes and the smooth muscle tissue of the blood vessel, thus maintaining the stability of the blood vessels. The growth and multiplication of this primordial vascular plexus occurs through the process of angiogenesis in which new blood vessels arise from pre-existing vascularity. This process requires the combination of two signals, Angiopoietin 2 and VEGF, in order to promote the loosening of the support cells and the ability of newly exposed endothelial cells to multiply by budding and sprouting into new vessels. Replacement of Ang1 by Ang2 on the Tie2 receptor tyrosine kinase destabilizes the vessel integrity thus facilitating vessel sprouting in response to the VEGF signal. The new endothelial tubule then interacts with the surrounding mesenchymal cells in part as a response to Ang1 which acts on the endothelial cell Tie2 in order to trigger the association of the new tubule with the periendothelial cells. Hematopoiesis and Erythropoiesis Blood develops from endothelial cells (haematoblasts) by a process known as hematopoiesis initially in various parts of the embryonic primitive mesenchyme (yolk sac and allantois), and then in the liver and later on in the spleen, bone marrow and lymph nodes. In embryonic development it is known as primitive hematopoiesis. All blood cells develop from pluripotential stem cells committed to three, two or one hemopoietic differentiation pathways but morphologically undistinguishable. These pluripotent stem cells divide infrequently to generate either more pluripotent stem cells (self-renewal) or committed progenitor cells (colony-–forming cells, CFCs) which are irreversibly determined to produce only one or a few types of blood cells. These colony-forming cells are known as Lymphocyte Forming Colony (LCFC), Megakaryocyte Forming Colony (MCFC), Erythrocyte Forming Colony (ECFC) and Monocyte Granulocyte Forming Colony (MGFC). The progenitor cells are stimulated to proliferate by specific growth factors (colony-stimulating factors, CSFs) but progressively lose their capacity for division and develop into terminally differentiated blood cells which usually live for only a few days or weeks. Erythrocytes (red blood cells) develop by the process of erythropoiesis. In embryos, erythrocytes are nucleated and express embryonic globin chains. Heart Formation In vertebrate embryos the heart tube, the earliest formed heart structure, arises in the heart field, an embryonic clustering of cells which arises soon after gastrulation. These early stages of development are almost identical among all vertebrates unlike the subsequent septation of the chambers and of the outflow tract which varies between species. The heart field is that region of the precardiac mesoderm that contains the cardiac progenitor cells (endocardial and myocardial precursor cells) and is competent in responding to inductive signals. Precardiac cells from the epiblast lateral to the primitive streak invaginate through the streak and migrate cranio-laterally to form part of the lateral plate. This pattern is maintained in the eventual anteroposterior placement of structures in the heart, with the most cranial cells contributing to the bulbus cordis at the extreme anterior end of the heart and the most caudal cells contributing to the sinoatrial region and the extreme posterior end. As mentioned above, the cell progeny of this region contributes to all layers of the heart tube (myocardium, endocardium and parietal pericardium), as well as to the endothelial cells in the vicinity of the heart. In the lateral plate the cells maintain their anteroposterior position. The lateral plate splits to form two epithelial layers, the somatic mesoderm (which also includes migratory precursors for limb musculature) and the splachnic mesoderm which remains an epithelial sheet and includes the cardiac precursors. The embryo then folds ventrally carrying the splachnic mesoderm with it and bringing it ventral to the foregut which is generated as the lateral folds meet in the ventral midline. The precursors of the endocardium are included in the splachnic mesoderm and begin to form clusters on the foregut side of the epithelial sheet. The heart fields fuse at the midline to form a primary heart tube, the process beginning cranially and proceeding caudally. This tubular heart consists of an outer myocardial mantle and an endocardial inner lining. Between these two concentric epithelial layers an acellular matrix, the cardiac jelly, is found. As the ventricular region of the heart begins to bend to the right (â€Å"cardiac looping†), the cardiac jelly disappears from the future major chambers of the heart (atria and ventricles) and begins to accumulate in the junction between the atria and ventricles (atrioventricular junction, AVJ) and in the developing outflow tract (OFT). This results in the formation of the endocardial cushion tissues in the AVJ which later contribute to the formation of AV (atrioventricular) septal structures and valves, septation of the OFT and formation of the semilunar valves of the aorta and pulmonary artery. The vertebrate heart tube is aligned along the antero-posterior axis. Arterial flow is directed from the ventricle at the anterior end of the heart, through the ventral aortic vessel and branchial arches and subsequently travels posteriorly to the dorsal vessel. Blood flow returns to the heart through the venous system to the atrium lying at the posterior end of the heart chamber. Formation of the Mammalian Embryonic Cardiovascular System 1)   Formation of the primitive cardiovascular system a)   Extra-embryonic blood vessels The wall of the yolk sac mesenchyme proliferates and forms isolated cell clusters known as blood islands. Peripheral cells within these islands flatten and differentiate into endothelial cells in order to form endothelial tubes. Centrally- located cells develop into primitive blood cells (hematoblasts). Endothelial tubes approach and fuse with each other forming a primitive vascular network. This primitive endothelial network appears in the chorionic membrane and body stalk and connects to the vitelline circulation. b)   Intra-embryonic blood vessels The endothelial tube network appears in the intraembryonic mesenchyme to  form an intraembryonic endothelial   tube network. The intraembryonic and extra  embryonic tube networks connect to each other forming a diffuse endothelial   tube network which either fuses or disappears to form a primitive cardiovascular  system. 2) Development of the Heart The primitive cardiovascular system consists of the primary heart tube, formed from the fusion of the two bilateral heart fields of the precardiac mesoderm. The primary heart tube gives rise to the endocardium. Blood flows through this primitive heart tube in a cranial position. The mesenchyme surrounding the tube condenses to form the myoepicardial mantle (the future myocardium). Gelatinous connective tissue, the cardiac jelly, separates the myoepicardial mantle from the endothelial heart tube (the future endocardium). A series of constrictions (sulci) divides the heart into sections: the sinus venosus, in which the common cardinal veins, the umbilical veins and the vitelline veins drain; the primitive common atrium; the primitive common ventricle; and the bulbus cordis through which blood flows to the paired dorsal aortae. The paired dorsal aortae arise when the branchial or pharyngeal arches are penetrated by six pairs of arteries called aortic arches. These arteries arise from the aortic sac and terminate in a dorsal aorta. Initially, the paired dorsal aortae run along the whole length of the embryo but soon fuse to form a single dorsal aorta just caudal to the branchial or pharyngeal arches. The arterial and venous ends of the heart tube are fixed by the branchial or pharyngeal arches and the septum transversum, respectively. At this stage the heart is beating and the contractions are of myocardial origin and likened to peristalsis. The primitive atrium loops up behind and above the primitive ventricle and behind and to the left of the bulbus cordis forming the bulboventricular loop.. This looping process brings the primitive areas of the heart into the proper spatial relationship for the further development of the heart. Embryonic venous circulation consists of three pairs of veins: the vitelline veins which drain blood from the yolk sac, the umbilical veins which bring oxygenated blood from the chorion (early placenta), and the common cardinal veins which return blood to the heart from the body of the embryo. Arterial circulation consists of three paired arteries: the intersegmental arteries, which form 30-35 branches of the dorsal aortae and carry blood to the embryo, the vitelline arteries which pass to the yolk sac and later to the primitive gut, and the umbilical arteries which carry oxygen-depleted blood to the placenta. 3)  Ã‚  Ã‚  Ã‚  Ã‚   Formation of the Heart Chambers As mentioned above, during cardiac looping the cardiac jelly disappears from the future major chambers of the heart and begins to accumulate in the  Ã‚  Ã‚   atrioventricular junction (AVJ) and developing outflow tract (OFT). This results in the formation of the endocardial cushion tissues in the dorsal and ventral walls of the AVJ. These cushions are invaded by mesenchymal cells, approach each other and fuse, dividing the atrioventricular canal into the right and left atrioventricular canals. The primitive atrium is divided into right and left atria by the formation, modification and fusion of the septum primum and the septum secundum. The septum primum grows towards the fusing endocardial cushions from the roof of the primitive atrium creating a curtainlike septum, the foramen primum between the free edge of the septum and the endocardial cushions. This foramen becomes progressively smaller and eventually disappears when the septum primum fuses with the fused endocardial cushions (atrioventricular septum). The septum secundum grows from the ventrocranial wall of the atrium to gradually overlap the foramen secundum in the septum primum, forming an incomplete separation between the atria in the form of an oval opening, the foramen ovale. The sinus venosus initially opens into the center of the dorsal wall of the primitive atrium and its left and right horns are of about the same size. The right horn progressively begins to enlarge in respect to the left horn until it receives all the blood from the head and neck via the superior vena cava and the placenta and caudal regions of the body via the inferior vena cava. The left horn forms the coronary sinus. The wall of the left atrium is formed by the incorporation of the primitive pulmonary vein which develops as an outgrowth of the dorsal atrial wall. As the atrium expands, the primitive pulmonary vein and its branches are gradually incorporated into the wall of the left atrium forming four pulmonary veins with separate openings. The division of the primitive ventricle into the right and left ventricles is initially indicated by a muscular ridge with a concave free edge in the middle of the ventricular floor near its apex. Initially, most of its increase in height results from the dilation of the ventricles on its each side. Later, however there is active proliferation of myoblasts, forming the thick muscular part of the interventricular septum. At the beginning a crescentic interventricular foramen exists between the free edge of the interventricular septum and the fused endocardial cushions allowing communication between the right and left ventricles. This foramen closes as the result of the fusion of tissue from three sources: 1) the right bulbar ridge, 2) the left bulbar ridge and 3) the endocardial ridges. The membranous part of the interventricular spetum is derived from tissue extension from the right side of the endocardial cushions. It merges with the aorticopulmonary septum and the thick muscular part of the interventricular septum. When the interventricular foramen closes, the pulmonary trunk is in communication with the right ventricle and the aorta communicates with the left ventricle. Active proliferation of mesenchymal cells in the walls of the bulbus cordis gives rise to the formation of the bulbar ridges. Similar ridges form in the truncus arteriosus and are continuous with the bulbar ridges. Both the bulbar and the truncal ridges have a spiral orientation and result in the formation of a spiral aorticopulmonary septum when the bulbar and truncal ridges fuse. This septum divides the bulbus cordis and the truncus arteriosus into the aorta and pulmonary trunk. Due to the spiral orientation of the aorticopulmonary septum, the pulmonary trunk twists around the aorta. The bulbus cordis is incorporated into the walls of the ventricles. In the left ventricle it forms the walls of the aortic vestibule just inferior to the aortic valve. In the right ventricle it forms the infundibulum or conus arteriosus. Ventricular trabeculation begins in the apical region of the ventricles soon after  cardiac looping. The trabeculation serves primarily as a way of increasing the  oxygenation of the myocardium in the absence of   a coronary circulation. The  compactation of the trabeculae adds to the proportion and thickness of the  compact myocardium. How to cite Development of the Cardiovascular System in Vertebrate Embryos, Papers

Pentium Flaw Essay Example

Pentium Flaw Paper NTI 1 10: Computer Structure and Logic ITT Technical Institute 10/20/2013 The Pentium Flaw a divisional error was discovered in the summer of 1994. The flaw was discovered by Intel. Intel decided that their chips did not need to be recalled since the chance of the average user discovering the error was less than 1 in 9 billion. Thomas Nicely a mathematics professor at Lynchburg College in Lynchburg VA made error public when he sent an e-mail to several colleagues. Nicely was using several computers to compute mathematical problems to prove they had enough power to do so. I believe Intel did not handle the problem correctly at all. Intel knowing that there was a flaw in the chip still sent out a defective product. Regardless of who might come across the flaw or error Intel should have recalled the chip immediately to have them replaced. Intel deciding to send out the flawed processor has probably helped the company as well. Before the flaw not many people even knew who or what Intel was. Intel after months of research and help from outside professionals decided to recall the chip and have them replaced. Nicely said he had run more than one quadrillion calculations on a revised chip and could ot reproduce the error. We will write a custom essay sample on Pentium Flaw specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Pentium Flaw specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Pentium Flaw specifically for you FOR ONLY $16.38 $13.9/page Hire Writer If a similar flaw like this were to happen today Im not exactly sure what would happen. One thing Im sure of is word of any flaw or error would spread like wild fire. The old rule of thumb is 1 tells 10, well now its more like 1 tells 10,000. I believe that if a similar situation were to occur it would be handled quickly and promptly. Im sure Intel has new policies in place to handle situations like this and other companies would learned from Intels mistake. Reference Markoff, J. (1994, November 24). New York Times. Retrieved October 20, 2013, from

Homonyms quiz - Emphasis

Homonyms quiz Homonyms quiz Homonyms are words that are pronounced or spelt in the same way but have different meanings – there and their, for example. This ten-question quiz will test you on some of the most commonly confused homonyms. How well do you know your allusions from your illusions and your pails from your pales? After youve answered the questions and been given your score, an explanation of each pair of homonyms will appear. Good luck! He gives the ____ of knowing exactly what needs doing, but I wonder if he really does. allusionillusionCould you ____ with me for ten minutes? I’m just running a little late. bearbareIs everyone here? Do we have a full ____? complementcomplimentI’d appreciate it if you could be ____ about this; we’re keeping it quiet until the details are finalised. discreetdiscreteOur guest speaker this week is the ____ Dr Greggs. eminentimminentThe project is now in ____ fourth week, so I thought it would be a good idea to have a catch up. it'sitsWe felt his comments were beyond the ____ and hope he plans to issue an apology. palepailOur ____ concern is that the project may not be completed before the June deadline. principleprincipalWe’ll give you free ____ regarding design and pictures. reignreinCan we arrange to have some branded ____ made? stationarystationery How did you do? Let us know by popping a comment in the box below.

Commensalism Definition, Examples, and Relationships

Commensalism Definition, Examples, and Relationships Commensalism is a type of relationship between two living organisms in which one organism benefits from the other without harming it. A commensal species benefits from another species by obtaining locomotion, shelter, food, or support from the host species, which (for the most part) neither benefits nor is harmed. Commensalism ranges from brief interactions between species to life-long symbiosis. Commensalism Definition The term was coined in 1876 by Belgian paleontologist and zoologist Pierre-Joseph van Beneden, along with the term mutualism. Beneden initially applied the word to describe the activity of carcass-eating animals that followed predators to eat their waste food. The word commensalism comes from the Latin word commensalis, which means sharing a table. Commensalism is most often discussed in the fields of ecology and biology, although the term extends to other sciences. Terms Related to Commensalism Commensalism is often confused with related words: Mutualism - Mutualism is a  relationship in which two organisms benefit from each other. Amensalism - A relationship in which one organism is harmed while the other is not affected. Parasitism - A relationship in which one organism benefits and the other is harmed. Theres often debate about whether a particular relationship is an example of commensalism or another type of interaction. For example, some scientists consider the relationship between people and gut bacteria to be an example of commensalism, while others believe it is mutualistic because humans may gain a benefit from the relationship. Examples of Commensalism Remora fish have a disk on their heads that makes them able to attach to larger animals, such as sharks, mantas, and whales. When the larger animal feeds, the remora detaches itself to eat the extra food.Nurse plants are larger plants that offer protection to seedlings from the weather and herbivores, giving them an opportunity to grow.Tree frogs use plants as protection.Golden jackals, once they have been expelled from a pack, will trail a tiger to feed on the remains of its kills.Goby fish live on other sea animals, changing color to blend in with the host, thus gaining protection from predators.Cattle egrets eat the insects stirred up by cattle when they are grazing. The cattle are unaffected, while the birds gain food.The burdock plant produces spiny seeds that cling to the fur of animals or clothing of humans. The plants rely on this method of seed dispersal for reproduction, while the animals are unaffected. Types of Commensalism (With Examples) Inquilinism - In inquilinism, one organism uses another for permanent housing. An example is a bird that lives in a tree hole. Sometimes epiphytic plants growing on trees are considered iniquilism, while others might consider this to be a parasitic relationship because the epiphyte might weaken the tree or take nutrients that would otherwise go to the host. Metabiosis - Metabiosis is a commensalistic relationship in which one organism forms a habitat for another. An example is a hermit crab, which uses a shell from a dead gastropod for protection. Another example would be maggots living on a dead organism. Phoresy - In phoresy, one animal attaches to another for transport. This type of commensalism is most often seen in arthropods, such as mites living on insects. Other examples include anemone attachment to hermit crab shells, pseudoscorpions living on mammals, and millipedes traveling on birds. Phoresy may be either obligate or facultative. Microbiota - Microbiota are commensal organisms that form communities within a host organism. An example is the bacterial flora found on human skin. Scientists disagree on whether microbiota is truly a type of commensalism. In the case of skin flora, for example, there is evidence the bacteria confer some protection on the host (which would be mutualism). Domesticated Animals and Commensalism Domestic dogs, cats, and other animals appear to have started out with commensal relationships with humans. In the case of the dog, DNA evidence indicates dogs associated themselves with people before humans switched from hunting-gathering to agriculture. Its believed the ancestors of dogs followed hunters to eat remains of carcasses. Over time, the relationship became mutualistic, where humans also benefited from the relationship, gaining defense from other predators and assistance tracking and killing prey. As the relationship changed, so did the characteristics of dogs. Reference:  Larson G (2012). Rethinking dog domestication by integrating genetics, archeology, and biogeography. Proceedings of the National Academy of Sciences of the United States of America. 109: 8878–83.

Human Rights Essay Example | Topics and Well Written Essays - 1250 words

Human Rights - Essay Example If a person is deprived the provisions of article 5, he or she shall have the right to ask for compensation. Saying that the article does not derail the process of fighting crime in the U.K. will be proper. The article only serves to protect the rights of an individual to security and liberty. People are entitled to be liberal and secure. The right in itself protects innocent individuals against aggression from fellow individuals hence maintaining law and order is its main priority. It allows for individual rights to liberty while at the same time guarding against commitment of a crime through its provision. Limited means that a person can be denied the rights under the provisions of article 51. It means that there are circumstances where deprivation of liberty is deemed very lawful. However, such events are also guarded within the law to ensure that they are not taken advantage of illegally to dehumanize other human beings by law enforcement agents. In the case of any deprivation to the provisions of article 5, the law stipulates that such instances should be lawful and necessary. Such a period should not run longer than expected in the case of liberty restrictions. The guidelines to these provisions are set forth in article 5 (2) to 5 (5). Any limitation to the article should follow the guidelines stated under the articles. For example, a suspected terrorism offender can be denied this freedom for longer than is necessary so that the law enforcers can guarantee security to other persons. Under the terrorism prevention and investigation strategies, article 5 imposes significant restrictions to suspects of terror crimes. The law also creates harsh restrictions to a person convicted of terror crimes hence his or her rights to liberty are very slim creating a reduction in crime level2. Another example is when it is made compulsory for a

Strategic Marketing and Marketing planning process Essay

Strategic Marketing and Marketing planning process - Essay Example Therefore, it can be said that the goal of strategic marketing is in defining the course the business should take in order to achieve its strategic goals. At the same time, unlike tactical marketing, which is focused on strategy implementation, strategic marketing involves actual development of the strategy to be implemented. Based on company’s business objectives, strategic marketing deals with determining who the potential customers are, why they would buy the product or service, what it would take them to purchase and so on (Ignite Marketing Group, LLC, 2009). Consequently, strategic marketing performs such functions as market research and segmentation, targeting, and positioning the product. Completed, these tasks then become the basis for conducting an effective marketing campaign, which, in order to be effective, have be well planned. The marketing planning process, therefore, is the process of planning a marketing campaign for the product or service on the basis of information gathered from market research. However, the very first data to consider in the process of marketing planning is the overall business’ goals and objectives, because the actual goal of marketing is to achieve the set goals (Rooney, 2004). On this matter White and Uva (2000) distinguish three levels of planning activities that help businesses in defining their marketing strategies. According to the authors (White and Uva, 2000), they are: However, the strategic marketing plan, being the link between organization’s objectives and practical implementation of chosen strategies, is an essential element of the planning process, because it determines particular and precise goals and strategies to be implemented to achieve those goals. The very first thing to define in the process of marketing planning is company’s mission, meaning its orientation in the market – what