Monday, March 16, 2020

Cell Biology Glossary

Cell Biology Glossary Many biology students often wonder about the meanings of certain biology terms and words. What is a nucleus? What are sister chromatids? What is the cytoskeleton and what does it do? The Cell Biology Glossary is a good resource for finding succinct, practical, and meaningful biology definitions for various cell biology terms. Below is a list of common cell biology terms. Cell Biology Glossary Anaphase - a stage in mitosis where chromosomes begin moving to opposite ends (poles) of the cell. Animal Cells - eukaryotic cells that contain various membrane-bound organelles. Allele - an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome. Apoptosis - a controlled sequence of steps in which cells signal self-termination. Asters - radial microtubule arrays found in animal cells that help to manipulate chromosomes during cell division. Biology - the study of living organisms. Cell - the fundamental unit of life. Cellular Respiration - a process by which cells harvest the energy stored in food. Cell Biology - the subdiscipline of biology that focuses on the study of the basic unit of life, the cell. Cell Cycle - the life cycle of a dividing cell, including Interphase and the M phase or Mitotic phase (mitosis and cytokinesis). Cell Membrane - a thin semi-permeable membrane that surrounds the cytoplasm of a cell. Cell Theory - one of the five basic principles of biology, stating that the cell is the basic unit of life. Centrioles - cylindrical structures that are composed of groupings of microtubules arranged in a 9 3 pattern. Centromere - a region on a chromosome that joins two sister chromatids. Chromatid - one of two identical copies of a replicated chromosome. Chromatin - the mass of genetic material composed of DNA and proteins that condense to form chromosomes during eukaryotic cell division. Chromosome - a long, stringy aggregate of genes that carries heredity information (DNA) and is formed from condensed chromatin. Cilia and Flagella - protrusions from some cells that aid in cellular locomotion. Cytokinesis - the division of the cytoplasm that produces distinct daughter cells. Cytoplasm - all of the contents outside of the nucleus and enclosed within the cell membrane of a cell. Cytoskeleton - a network of fibers throughout the cells cytoplasm that helps the cell maintain its shape and gives support to the cell. Cytosol - semi-fluid component of a cells cytoplasm. Daughter Cell - a cell resulting from the replication and division of a single parent cell. Daughter Chromosome - a chromosome that results from the separation of sister chromatids during cell division. Diploid Cell - a cell that contains two sets of chromosomes- one set of chromosomes is donated from each parent. Endoplasmic Reticulum - a network of tubules and flattened sacs that serve a variety of functions in the cell. Gametes - reproductive cells that unite during sexual reproduction to form a new cell called a zygote. Gene Theory - one of the five basic principles of biology, stating that traits are inherited through gene transmission. Genes - segments of DNA located on chromosomes that exist in alternative forms called alleles. Golgi Complex - the cell organelle that is responsible for manufacturing, warehousing, and shipping certain cellular products. Haploid Cell - a cell that contains one complete set of chromosomes. Interphase - the stage in the cell cycle where a cell doubles in size and synthesizes DNA in preparation for cell division. Lysosomes - the membranous sacs of enzymes that can digest cellular macromolecules. Meiosis - a two-part cell division process in organisms that sexually reproduce, resulting in gametes with one-half the number of chromosomes of the parent cell. Metaphase - the stage in cell division where chromosomes align along the metaphase plate in the center of the cell. Microtubules - fibrous, hollow rods that function primarily to help support and shape the cell. Mitochondria - cell organelles that convert energy into forms that are usable by the cell. Mitosis - a phase of the cell cycle that involves the separation of nuclear chromosomes followed by cytokinesis. Nucleus - a membrane-bound structure that contains the cells hereditary information and controls the cells growth and reproduction. Organelles - tiny cellular structures, that carry out specific functions necessary for normal cellular operation. Peroxisomes - cell structures that contain enzymes that produce hydrogen peroxide as a by-product. Plant Cells - eukaryotic cells that contain various membrane-bound organelles. They are distinct from animal cells, containing various structures not found in animal cells. Polar Fibers - spindle fibers that extend from the two poles of a dividing cell. Prokaryotes - single-celled organisms that are the earliest and most primitive forms of life on earth. Prophase - the stage in cell division where chromatin condenses into discrete chromosomes. Ribosomes - cell organelles that are responsible for assembling proteins. Sister Chromatids - two identical copies of a single chromosome that are connected by a centromere. Spindle Fibers - aggregates of microtubules that move chromosomes during cell division. Telophase - the stage in cell division when the nucleus of one cell is divided equally into two nuclei.

Saturday, February 29, 2020

Active contours

Active contours Active contours are one category of variational methods that have been used widely within image segmentation applications. An energy functional is defined with arguments as the image parameters and a closed curve that partitions the objects in the image. There are two main methods of representing the curves such as (a) extrinsic and (b) intrinsic. Extrinsic representation keeps function values at boundary points. Intrinsic lets use of functions that are defined on all the point of the image and are more desirable. Intrinsic representation of a planar curve C using an auxiliary function is denoted as C = f(x; y) j (x; y) = 0g (22) where (x; y) is called level set function of curve C and the zero level of (x; y) is taken as the contour. Curvature  of the closed curve C with level set function  is given by  = div( 5 k5k ) (23) The deformation of the contour is reprsented in a numerical form as a partial differential equation @(x;y) @t =j 5(x; y) j ( + ((x; y))) (24) where  is a constant speed term to push or pull the contour. Mean curvature of the level set function is defined as: ((x; y)) = xx2 yà ´Ã‚€Â€Â€2xyxy+yy2 x (2 x+2 y)3=2 (25) where x is the first derivative with respect to x and xx is the second derivative with respect to x. The role of the curvature term is to control the regularity of the contour and  controls the balance between the regularity and robustness of the contour. Chan Vese formulated the energy function F in terms of an internal force Eint and an external force Eext F(C) = R 1 0 [Eint(C(S)) + Eext(C(S))]ds (26) Eint = length(C) + Area(Cin) (27) Eext = R Cin j I(x; y) à ´Ã‚€Â€Â€ I1 j2 + R Cout j I(x; y) à ´Ã‚€Â€Â€ I2 j2 (28) where  and  are positive fixed parameters which help to smoothen the growing contour. I(x; y) is intensity value of image region and I1 and I2 are average intensity value inside and outside the object region, respectively. IV. IMPLEMENTATION AND ANALYSIS All qualitative and quantitative outcome of the algorithm were recorded by running the Matlab programs with Intel(R) Core (TM) i7 CPU, 3.4 GHz, 4 GB RAM with Matlab 14 (a) on Windows 8. A. Description of Test Data The dataset used in the proposed algorithm consists of scanned images of stained breast biopsy slides from MITOS dataset [35]. Each set is composed of 96 high power field (HPF) images of breast tissue scanned at 40X magnification using two different scanners, Aperio (AP) and Hamamatsu (HM), with a resolution of 0.23-0.24 m:. All the images are 1376  1539  3 size. B. Experimental Strategies This paper qualitatively and quantitatively compares the KHO based optimal nuclei detection performance with the watershed based detection done by S. Ali et al. [8] and blue ratio image based detection done by Irshad et al. [21]. The segmentation performance is compared with local threshold method done by Cheng Lu et al. [22]. 1) Experiment 1: Evaluating the optimal threshold value: Goal of this experiment was to prove the power of KHO based optimal thresholding to detect the exact nuclei regions in histology images. It also compares the optimum value of the threshold obtained by KHO in breast histopathology images with GA, HSA and BFA. 2) Experiment 2: Comparison of Detection Accuracy: Aim of this work is to validate the detection performance of the proposed technique against the watershed and blue ratio techniques in terms of detection sensitivity and precision. 3) Experiment 3: Comparison of Segmentation Accuracy: This evaluates the performance of the detection algorithm in ACM segmentation and compare the results against two state-of-the-art techniques in terms of boundary based distance measures. This experiment also measure the strength of the algorithm to resolve the touching nuclei in terms of touching nuclei resolution.1) Evaluation of Detection Performance: This paper qualitatively and quantitatively evaluates the application of optimal thresholding in nuclei detection performance. The mean objective value and standard deviation express the consistency and stability of the algorithms. The results obtained by KHO are compared with GA, HSA and BFA. The parameters used in these algorithms are given in Table II.The quantitative evaluation of detection performance is carried out by locating the centroid of detected nuclear regions. The measures used to assess the nuclei detection comprise of: 1) Sensitivity (SD); 2) Positive Predictive value or Precision (PD); and 3) F-measure (FD) as given in eq. (26), (27), and (28), respectively. The results obtained are compared with manual detection results by an expert pathologist. The SD and PD values are computed from the number of truepositives (number of correctly detected nuclei, Ntp) , falsepositives (number of wrongly identified nuclei, Nfp) and false negatives(number of nuclei not detected by the algorithm, Nfn). The detected object is considered as true positive if its centroid is within 10 pixels range of manually determined centroid location. If no centroid was manually located within

Thursday, February 13, 2020

The Super Continent Cycle Essay Example | Topics and Well Written Essays - 1000 words

The Super Continent Cycle - Essay Example This has been made possible by plate tectonics, the system driving Earth's continents slowly around the globe. Plate tectonics is the study of the movement of the huge plates of the landmass beneath the earth surface which results into drifting of the continents. This hypothesis of drifting continents was proposed by German scientist Alfred Wegener for the first time in 1912. He used many types of evidence available in abundance on the earth's surface. Some of the evidences pointing out such supercontinent cycle are; Fossil Remains: Similar types of plant and animal fossils were found in different areas of continents which were studied to be connected. For example, the fossil remains of a small reptile found both in Africa and Latin America. Rock Formations: In the coastal regions, the rocks were found to be matching even in areas which were widely separated. To prove this point Wegener came out with the proof suggesting the reconstruction of an ice cap radiating from South Africa, whose marks were traced across the southern continents. Climatic Conditions: Some climatic patterns were observed which were not in conformity with the normal climate of the region/s, thus suggesting that these climatic conditions could have been affected by the climatic conditions at some other places or regions. Wegener's hypothesis therefore led us to believe that while on the one hand the some of the western African regions have similarities with the eastern part of South America; the northern part of African continent had similarities with the southern regions of North America. Similarities were also found in the southern part of Asian region and the western part of African continent, thus giving the thought an impetus. Initially though Wegener's hypothesis was not taken seriously, but gradually, as the theory of plate tectonics developed in 1960's, more and more studies took place, the notions of supercontinent gained wider acceptance. The plate tectonics theory believes that the surface of earth is divided into a number of shifting plates with an average thickness of around 50-80 km. African, American, Antarctic, Eurasian, Indian and Pacific regions have all been assigned huge plates while smaller landmasses with smaller plates are identified as Arabian, Caribbean, Cocos, Nasca, Philipp ine and Scotia regions. In fact scientists have identified about 15 major tectonic plates. Earthquakes help in identifying the plates. The supercontinent theory suggests that during the Paleozoic Era, there was a huge continent named Pangeae, which included all the continents. The name Pangaea is derived from the Greek word "pan" meaning "all" and Gaea or Gaia i.e. the Greek name of the divine personification of the Earth. Pangaea, therefore, means "all land." During the Triassic Period, the Pangeae started fragmenting thus resulting in the existing number of continents. This process is said to be continuing even now. The supercontinent theory suggests such occurrences have also happened in the past, thus the name 'supercontinent cycle'. Canadian geologist John Tuzo Wilson also provided an insight into the hypothetical supercontinent cycle, who described the fragmentation of continents, opening and closing of the ocean basin and subsequent reassembly of the continents. This theory suggests t

Saturday, February 1, 2020

Corporate Strategy - Analysis of Michael Porter Essay

Corporate Strategy - Analysis of Michael Porter - Essay Example Companies were not willing to take risks and venture into path that was not trodden earlier by some one else. In the information technology sector, imitation became inevitable as emerging economies allowed inwards flow of FDI. When multinationals started expanding to low cost countries they had to enter in joint venture with a local partner, which means they had to transfer technology. When firms entered India, they had to opt for joint ventures. While older technologies are transferred through licensing agreement, new technologies or those with fewer previous transfers or where the transferors have little experience with technology transfers opt for FDI (Eapen & Hennart, 2002). Porter further says, in high-tech industries this imitation phase often continues much longer than it should. This is because once the companies become established they do not plan for anything new and do not have any clear strategic. Stagnation occurs, which results in mediocre returns. Companies that come out with fundamental advantages prosper such as Toyota in the automobile sector. The Big Three in the US automotive industry namely, Ford Motor Company (Ford), General Motors Corporation (GM) and DaimlerChrysler (DC) played a prominent role in the evolution of the automotive industry till the 1990s. The industry adopted the lean production technique from Japan in the 1990s. The auto industry is the most globalized in the world and has undergone turbulent changes. The industry has been facing issues such as facing issues such as slow time to market, costly inventories, overcapacity, and low customer satisfaction and loyalty (Deloitte, 2003). The Big Three did not take initiatives to bring about fundamental changes as technology evolved. This allowed others such as Toyota and Hyundai to dominate the world market. Today Toyota is America’s third most admired organization and enjoy a 17.4 percent share of the US retail market (SD, 2007). Toyota has

Friday, January 24, 2020

The Targeting strategy :: Business and Management Studies

The Targeting strategy Data strategy paper The business that I am going to examine is a typical business to consumer type dealing with music related product sales and distribution directly to customers (direct sell). All music is an e-commerce site that provides a large inventory of musical genres. It has a user friendly search engine to explore the huge music database of the site. It provides advanced searching methods that help the user to explore the database according to mood, genre, song and album title. All music provides moreover to the user an extra service that can give him/her the opportunity to become a registered member of the site (free) in order to gain specific information concerning: special prices, offers, music information according to his/her preferences, advanced search, expanded artist information (credits, songs), editorial features as well as the ability to listen audio samples (30 second duration) before purchasing the record. Moreover it uses a 5 star album rating system with 5 being the best rating in order to assist the customer about the specific release. Target Group The Targeting strategy that All music utilizes is based on market segmentation in order to collect and manipulate current and prospective buyers into groups (segments) that have common needs and will respond similarly to a marketing action. Our target group comprised on:  · Age Primarily males and females aged 18-30 years  · Lifestyle Customers that like to purchase musical products such as cd-albums, t-shirts, music accessories as well as musical concerts. * Location Living in Western Europe and America and can be able to perform credit card transactions. The main reason that All music focus more on those areas is due to the fact that the specific customers (from statistical information): 1) Perform on-line transactions via credit card on a daily basis(have proper knowledge of the internet technology) 2) Affluent target groups that are affordable to pay for music downloads and cd-purchases charged by record labels via the internet. Data element The data that should be maintained in the specific marketing database should be: * Customer ID  · Customer name * Country * Customer gender * Customer age * Occupation * Customer marital status * Customer address * Customer telephone(or cell phone) * Customer email * Customer search history * Financial information  · Preferred genre  · Prospect customer Source(where will All music get the data sources?) All music should use information concerning the data sources both external and internal. Examining the external data all music will get the data elements with the use of a combined approach of compiled and response data in order to identify the source of information. To be more specific through compiled data All music will collect from

Wednesday, January 15, 2020

Police Dogs

Police Dogs Breah Ratlif Animal Science AY105-02 12-12:50 Cute, fun, loving, cuddly, outgoing; these are only a few words to describe the animals that we have come to know and love as a part of our families. Dogs have been man’s best friend for hundreds of years and were the first animal to be domesticated because they are great as companions, highly intelligent, and were found to be very useful in human’s everyday lives. Even though they made excellent house pets they were highly successful at working side by side humans as well.They are not limited to being just best friends, but they have been found to be protectors and saviors as well, to their owners, others people and even other dogs too. One type of working dogs in particular that needs to be recognized for their tremendous efforts, and hard work is none other than police dogs. There are many dogs that will help humans in time of need. For example there are guide dogs, search-and-rescue dogs, and bomb-or-drug- sn iffing dogs just to name a few. They really dedicate themselves to the jobs that they live to do.But few dogs are asked to go above and beyond to lay their lives on the line to protect and serve as much as police dogs. These dogs are trained to do specific things. The basic description of what police dogs do is to guard their handler, and assist him in numerous tasks, such as finding, intimidating, and holding suspects, or investigate the scene of a crime. Some can even be trained specially for detection work. It is interesting how on one hand they are a loving member of a family, then when it is time to do some police work they can take down and attack humans so easily.In order to lead this type of life style this dog has to have some very important traits that other dogs may not have. They must come from intelligent, strong, dedicated, and aggressive but obedient lines of dogs, and while even the trait to be too aggressive is not very desired the strongest traits that police dogs must have are self-control and obedience. Police dogs are usually members of the working dog breeds. The dogs today come from a long line of purebred working dogs that were bred because of their high intelligence and strength.There are other breeds that have traits that could greatly contribute to police work as well such as hunting dogs or herding dogs because of skills like hunting and tracking for instance. There are several dogs that qualify for police work and are known for their bravery and drive. The German Shepard is the most common and most popular dog for police work. Lab Retrievers, Belgian Malinois, Doberman Pinschers, Akitas, Terriers, Boxers, Spaniels, Bloodhounds, the Bouvier de Flandres, Rottweiler’s, Collies and Dutch Shepherds have been known to also be used for different types of police work.K-9 police work is more than just brute strength and skin prickling growling. Tracking down or smelling for drugs, weapons, evidence, cash, bodies, criminals; holding o n to criminals; and even protection work are all a part basic everyday life. Just the presence of a having a police dog by the officers side can prevent physical harm from being inflicted upon the police officer by the suspect/criminal, ultimately leading to lesser chances of the officer getting harmed in any way.Police dogs today are not bred or employed to be vicious animals towards people in any sense; in all actuality most are trained or supposed to be trained to enjoy their work as hard as that may seem. What happens is it all starts off as fun and games. Chasing and grabbing is introduced to them as games when they are young pups to get them use to it. They usually play these types of games only when the handler or in other words a police officer, gives the right command for them to do so.The goal of the games is not for the dog to actually â€Å"bite† its opponent but more to merely hold on to it for as long as possible till the officer it works with gives the dog the command to let go. This tactic is mostly to insure that the suspect/criminal does not get away until the officer can catch up and take care of him/her their self. This grab is strong and hard. There is always a large possibility that the suspect/criminal can/will be bitten if they attempt to fight off the dog but when thinking about it even the dog â€Å"gripping† onto the suspect will inflict a bite.They would not be able to hold the suspect as well if they did not apply pressure into their grip. Before any dog has to be turned loose, they try to intimidate the person first by giving them a warning that if they start to run, the dog will be released and will chase after them. A barking tactic is also used to scare the person into not running away. Even in a case where the officer and dog seem to have the upper hand, there are many situations where the tables can be completely turned. Both the officer and the dog are trained to work together as a team.They must be able to ful ly trust and understand one another especially when they are placed in extremely dangerous and stressful situations. It is the responsibility of the officer the dog is being handled by to only use the dog when the situation absolutely calls for it. Any other way would be very inappropriate and would be a terrible miss use of the animal. Not being responsible could also put the dog in more of harm’s way which can take a definite turn for the worst. Going into depth of the most popular and common of the police dogs the â€Å"the German shepherd only came into being a little over 100 years ago.A German shepherd enthusiast, fascinated with the intelligence, strength and agility of the country’s native sheep dogs, established the breed, which spread throughout the world when Allied soldiers saw how the Germans used them as messenger, tracker and guard dogs during World War 1. After the war, the name German Shepherd Dog (Deutsher Shaferhund) was dropped in favor of the Alsa tian Wolf Dog (After the Alsace-Lorraine German/French border region), as it was thought that the word â€Å"German† would make the breed unpopular, and Alsatian continued to be used for the breed until the 1970s. Your Best Friend: The Dog, pg. 50. The other types of working dogs that are used a lot more than the rest of the working breeds in police work are the Belgin Malinois (very similar to the German shepherd), the Doberman, Boxer and Rottweiler. One main reason they are under the German shepherd or Belgin Malinois could be because of factors such as tolerance for instance. That can be directed towards weather and other such factors. Based off of observation with their fur coats being shorter they do not do as well in colder climates or seasons and police duties are year round.Still the loyalty, obedience, and ability to react quickly in certain situations, make the Doberman a great breed for police dog training. The brute strength of a Rottweiler, along with their intel ligence and protective nature, makes them popular to some and in case there are no German shepherds around Rottweiler’s are great substitutes for getting the job done. The same goes for the boxer with it being fearless, loyal and strong they are also respected to be a strong guard dog and used in police work.This topic was found to be interesting and unique because dogs are one of the few animals people can really rely on to be there no matter what. Humans can rely on dogs to be more than great companions and friends. They have traits of loyalty, fearlessness, loving, strong, dedicated, and intelligent. The list could go on but more than any pet they will stick by your side till the very end. Dogs were also found to be great at being put to work. Their senses are far better than humans. They have Excellent hearing and smelling. According to facts. randomhistory. om a dog can locate the source of a sound in 1/600 of a second and can hear sounds four times farther away than a h uman can. Also Touch is the first sense the dog develops. The entire body, including the paws, is covered with touch-sensitive nerve endings. Dogs have a wet nose to collect more of the tiny droplets of smelling chemicals in the air. When it comes to their smelling abilities a dogs sense of smell is 50 times for sensitive than a humans. Some dogs can smell dead bodies under water, where termites are hiding, and natural gas buried under 40 feet of dirt.They can even detect cancer that is too small to be detected by a doctor and can find lung cancer by sniffing a person’s breath. It does not hurt that dogs can be trained to do just about anything so this makes them perfect for doing work. A good example of something a police dog can be trained to do is known as â€Å"Aggressive alert† which the most common of the alerts it is taught to them. Aggressive alert is what the dogs do to show indication of an odor or substance that they are trained to detect by vigorously scrat ching and barking at a particular item. Another alert that is taught to police dogs is called â€Å"Passive alert†.The dog will sit when it smells the odor that it is trained to detect. Passive alert is common when it comes to explosive detection canines and narcotic detection canines. I feel that there are many pros and cons to having police dogs on the force. I personally like the fact that we have dogs involved in police work to a certain extent. Where some humans lack the stamina to run and catch up with a suspect that has decided to give an officer the chase, the police dog can make up for what he/she lacks. Dogs are great runners and if exercised properly they can almost run for miles.This makes them great at catching up with suspects to get a good grip on them and hold them until the officer can catch up and give the dog the command to let go. Also by using the dog it allows for the officers to refrain from using bullets if they are not exactly necessary, and unlike a gun, a dog almost never misses. This could lead to saving more lives whether innocent or not. I also think that the dogs really have been one of the best decisions that the police for could have made when it came to looking for better ways to do their job in multiple aspects.This is really in consideration to the dog’s senses being way more sensitive than that of a human. Since we are unable to smell certain things that are not very pungent or in close range to our noses our dogs can definitely smell what we cannot especially particular breeds of dogs that have a better sense of smell than others. There was one particular instance that I can personally say caught my attention. I had an open bag of cookies in my purse and there was a beagle puppy and a boxer puppy in front of me allowing me to pet them.Instantly the beagle puppy could smell the bag of cookies that I had in my purse sitting behind me before the boxer puppy could. It was so amazing to me to see how the dog react ed to the smell of the cookies. From previous knowledge of beagles I know that they are also working dogs and are great for smelling things and hunting things down. Police dogs are notorious for sniffing out drugs among other things. I remember being in high school and middle school and they would have days where they would bring police dogs in to smell the lockers of students to check for drugs.They always made sure students stayed in the class room for safety reasons I’m sure. They are also good for being used in airports where people are constantly coming and going from other states and countries so it is highly important to know what people have on them when boarding or getting off of a plane may catch things that the metal detectors, x-ray like machines and security guards may miss. Their highly sensitive noses can also be used to track down one specific person, leading to a faster take down of suspects as well as finding those who are in need.Some cons of police dogs ar e the actual harm they can cause a person while trying to catch and hold them while they wait for their trainer. They can inflict puncture wounds and if they grip the wrong part of the human body can lead to some pretty serious damage. There may also be case where the dog may attack the wrong person. Even though police dogs are extensively trained and are trusted partners police officers, they still possess canine instincts. A dog gets overexcited or becomes frightened may bite a handler, a suspect or a member of the public that is completely innocent.Police departments cannot make guarantees that these out of hand attacks will not happen, and it is possible for police agencies to be taken to court by the victims and forced to pay compensation for any damages caused by the out of control dog. Depending on how well the dog has been handled it does run the possibility to become aggressive. Another down fall is that police work can be beyond dangerous, and dogs are also susceptible to being injured or even killed while on duty. There have been cases where dogs have been killed by suspects that may have wielded knives and guns.Some people may view this as a disadvantage of using police dogs since the animal does not have a choice in terms of a career and emergency care is not all ways a call away for our canine companions especially at certain hours of the night. Mainly I do believe that having dogs doing police work does good than it does bad. There are more positives to adding dogs to the picture than negatives. Works Cited 1. â€Å"Police Dogs. †, German Shepherd Police Dog Breeds. Izoox, n. d. Web. 05 Oct. 2012. . 2. â€Å"The Dog† Your Best Friend. Pg 50. London: Carlton, 2010.Print. 3. Luca, Catherine Marien-Le. â€Å"Types of Working Dogs. † Types of Working Dogs. The Canine Information Library 2003-2010, n. d. Web. 05 Oct. 2012. . 4. â€Å"SITE NAVIGATION. † History Of Police Service Dogs. N. p. , n. d. Web. 05 Oct. 2012. . 5. à ¢â‚¬Å"WHY EMPLOY A POLICE DOG ? † Police Dogs. N. p. , n. d. Web. 05 Oct. 2012. http://www. worldwidecanine. com/PoliceDogs. htm 6. â€Å"99 Fun Facts About . . . † 99 Fun Facts about Dogs. N. p. , 15 Feb. 2009. Web. 05 Oct. 2012.

Tuesday, January 7, 2020

The Color Purple by Alice Walker Essay - 2235 Words

The Color Purple by Alice Walker The Color Purple by Alice Walker is the story of a poor black woman living in the south between World War 1 and World War 2. This was at a time when, although slavery had ended,many women were still virtually in bondage, and had to put up with many conditions that was reminiscent of the days of slavery. The problem was that they had to endure being treated like an inferior being by their own families sometimes, as well as from the white people that lived there. It was a life that was filled with misery for many black women, and they felt helpless to do anything about their situations. The book focuses mainly on a woman named Celie, who has lived a hard life already when, at the age of 14 she begins†¦show more content†¦One time when Mr. _____ is asked by his son Harpo why he beats Celie, he tells him â€Å"Cause she my wife. Plus, she stubborn. All women good for- he don’t finish.†(23) She tells God about how â€Å"He beat me like he beat the children.... Cept he don’t never hardly beat them. He say, Celie, git the belt. The children be outside the room peeking through the cracks. It all I can do not to cry. I make myself wood. I say to myself, Celie, you a tree. That’s how come I know trees fear man.† (23) And so life goes on for her, until she meets a couple of women that change her life around. The first woman she meets is Sophia, who marries Harpo. She isn’t afraid to stand up for herself, even to a man. When Mr. _____ asks Harpo if he ever hits her, Harpo is embarrassed, and answers that he hasn’t. So Mr. ______ tells him he should, because â€Å"Wives is like children. You have to let ‘em know who got the upper hand. Nothing can do that better than a good sound beating.† (37) While he may have thought he gave his son some good advice, when Harpo tries it, Sophia knocks him right back into place by beating him up instead. When Celie and Sophia talk about Mr. _____, Sophia tells her â€Å"You ought to bash Mr. _____ head open.†(37), but she knows she would never get away with it. She’s just coping with things as they are becauseShow MoreRelatedThe Color Purple By Alice Walker1355 Words   |  6 PagesDecember, 2015 Just A Single Purple Wildflower In A Field Of Weeds Alice walker once said, â€Å"No person is your friend (or kin) who demands your silence, or denies your right to grow and be perceived as fully blossomed as you were intended. Or who belittles in any fashion the gifts you labor so to bring into the world.† The color purple has timelessly been used to convey pictures of power and ambition, it is also associated with the feeling of independence. The Color Purple is the story of the constantRead MoreThe Color Purple By Alice Walker710 Words   |  3 PagesThe Series of unfortunate events in The Color Purple The Color Purple by Alice Walker starts off with a rather graphic view of a young black woman denominated as Celie. Celie has to learn how to survive her abusive past. She also has to figure out a way she can release her past in search of the true meaning of love. Alice walker wrote this book as an epistolary novel to further emphasize Celie`s life events. From the beginning of the novel Alice Walker swiftly establishes an intimate contact withRead MoreThe Color Purple by Alice Walker1192 Words   |  5 Pagesas a novel containing graphic violence, sexuality, chauvinism, and racism, The Color Purple was banned in numerous schools across the United States. Crude language, brutality, and explicit detail chronicle the life of Celie, a young black woman exposed to southern society’s harshness. While immoral, the events and issues discussed in Alice Walker’s The Color Purple remain pervasive in today’s society. The Color Purple epitomizes the hardships that African A mericans faced at the turn of the centuryRead MoreThe Color Purple by Alice Walker675 Words   |  3 Pagesthe world exist for their own reasons. They were not made for humans any more than black people were made for white, or women created for men.† Straight from the mouth of Alice Walker this quote was spoken in order to point out that fact that none of God’s creatures were put on this Earth to be someone else’s property. Alice Walker is an African-American novelist and poet who took part in the 1960’s civil rights movement in Mississippi. Walkers creative vision was sparked by the financial sufferingRead MoreThe Color Purple by Alice Walker921 Words   |  4 PagesAlice Walker’s realistic novel, The Color Purple revolves around many concerns that both African American men and women faced in an era, where numerous concerns of discrimination were raised. Religious and gender issues are confronted by the main characters which drive the plot and pa int a clear image of what life may possibly have been like inside an African American home. Difficulties were faced by each and every character specifically Celie and Nettie who suffered heavy discrimination throughoutRead MoreThe Color Purple By Alice Walker1540 Words   |  7 Pages Alice Walker is an award winning   author, most famously recognized for her novel   The Color Purple ;aside from being a novelist Walker is also a poet,essayist and activist .Her writing explores various social aspects as it concerns women and also celebrates political as well as social revolution. Walker has gained the reputation of being a prominent spokesperson and a symbolic figure for black feminism. Proper analyzation   of Walker s work comes from the   knowledge on her early life, educationalRead MoreThe Color Purple By Alice Walker3360 Words   |  14 Pagesâ€Å"Womanist is to feminist as purple is to lavender† (Yahwon). Alice Walker views herself as a womanist. Although a womanist and feminist are similar, the two terms are not exactly the same. According to Professor Tamara Baeouboeuf-Lafonant: [Womanism] focuses on the experiences and knowledge bases of black women [which] recognizes and interrogates the social realities of slavery, segregation, sexism, and economic exploitation this group has experienced during its history in the United States. FurthermoreRead MoreThe Color Purple by Alice Walker1100 Words   |  5 PagesThe Color Purple by Alice Walker is a story written in 1982 that is about the life struggles of a young African American woman named Celie. The novel takes the reader through several main topics including the poor treatment of African American women, domestic abuse, family relationships, and also religion. The story takes place mostly in rural Georgia in the early 1900’s and demonstrates the difficult life of sharecropper families. Specifically how life was endured from the perspective of an AfricanRead MoreThe Color Purple by Alice Walker926 Words   |  4 PagesThe award-winning novel, â€Å"The Color Purple† by Alice Walker, is a story about a woman going through cruel things such as: incest, rape, and physical abuse. This greatly written novel comes from a very active feminist author who used many of her own experiences, as well as things that were happening during that era, in her writing. â€Å"The Color Purple† takes place in the early 1900s, and symbolizes the economic, emotional, and social deprivation that African American women faced in Southern statesRead MoreThe Color Purple By Alice Walker1495 Words   |  6 PagesThe Color Purple, is a novel written by the American author Alice Walker. The novel won the 1983 Pulitzer Prize for Fiction and is also regarded to be her most successful piece of work. It has developed into an award winning film and was recently made into a Broadway play. The story continues to impress readers throughout the decades due to its brutal honesty. The novel successfully and truthfully demonstrates what life was like for black women during the early twentieth century. The book discusses