African American Struggle Essay Example for Free

African the Statesn Struggle EssayThe story of African immigration is preposterous among immigrant groups, just as the African experience in America has been exclusively essential to the course of American life. Unlike other immigrants, most Africans came to North America against their will, caught up in a cruel system of human exploitation. The treatment we endured in the United States was of a harshness hardly ever surpassed in fresh history, and their role in U. S. society was contested with a rage that nearly tore the nation apart. The centuries-long battle African Americans waged for freedom, for dignity, and for full participation in American society completely transformed the nation, and shaped the world we live in today. Today, there is no aspect of life in the United States that has not been stirred by the African American experience there is no institution, custom, or daily practice that has not been influenced or remade by the efforts of African American thinkers, w orkers, artists, activists, and organizers.African Americans faced every form of racism, prejudice, and segregation possible. We were not allowed to eat, drink, or even sleep in the same places with white people. They had everything marked whites or colors, and that was considered segregation. If an African American were to break one of those rules they would suffer great pain whether mentally or physically. When segregation came to an end, blacks were still not welcome to partake in the world comfortably.We were eer going through life feeling like a slave although freedom was granted. Affirmative Action, in the United States, was to overcome the effects of past difference by allocating jobs and resources to members of specific groups, such as minorities and women. The policy was implemented by national agencies enforcing the Civil Rights Act of 1964 and two executive orders, which provided that government contractors and educational institutions receiving federal funds develop s uch programs.The Equal Employment Opportunities Act (1972) set up a commission to enforce plans. The establishment of racial quotas in the holler of affirmative action brought charges of so-called reverse discrimination in the late 1970s. By the late 70s, however, flaws in the policy began to show up good intentions. turn around discrimination became an issue, epitomized by the famous Bakke case in 1978.Allan Bakke, a white male, had been rejected two years in a row by a medical school that had accepted less qualified minority applicants-the school had a separate admissions policy for minorities and reserved 16 out of 100 places for minority students. The Supreme court of law outlawed inflexible quota systems in affirmative action programs, which in this case had unfairly discriminated against a white applicant. In the same ruling, however, the Court upheld the legality of affirmative action.

Problem Solving and Decision Making Essay Example for Free

Problem Solving and Decision Making EssayBackgroundI work for a company c totallyed npower and we are an energy provider in the UK. Specifi nominatey, I work within the Blended Services department and we deal with various types of inbound contact from our customers much(prenominal) as email, letters and address calls. I manage a team of 15 people advisors and their role is to effectively deal with customer enquiries that come in via the different methods of contact. Due to the long volumes of correspondence that we stick come in, its not always practical to respond to customers via a written response and we at that ordinatefore take in the advisors to call as many customers as possible and locate their enquiries by ph whizz, this allows the advisors not exclusively deal with the customers original enquiry but to in equivalent manner re bodily function any subsequent questions that whitethorn arise when they are presented with the answer we give them. Description of t he problemWhen advisors call a customer there are regulations most data protection and also keeping customer contact details up to date that we must follow to, we refer to these regulations as compliance. This is a in truth black and white subject, we must be submissive in all we do 100% of the meter. The problem that has come to light that in our department, is that our advisors are not 100% compliant 100% of the time. They go forth full cover data protection and request up to date contact information on any(prenominal) calls but not others. This presents a problem for the department and me as a manager as well as the advisors in question as these inconsistencies cornerstone lead to varying degrees of disciplinary action for the advisors and the company. The impact of this for the advisors is that it can lead to disciplinary action such as in baronial warnings, up to more formal action such as written warnings and even exposelet of their job. In extreme cases run intoendi ng advisors can even face personal fines.As a manager, I then fuck off to consider the potential knock on effects of such action which can include loss of advisor boldness, a reduction in staff morale, and opportunity for progression may be reduced or interpreted away and all of these in turn may affect an advisors attendance. For me as a manager the c formerlyrns are that these actions could affect my time as I am required to carry erupt investigations in to severally case of non-compliance. This is turn could leave other members of my team to olfactory modality neglected as my time becomes consumed with investigations and carrying out disciplinary action. Potentially, this could lead to a general loss of morale within my team as a whole and go on to impact their performance.This issue also affects our customers as if we are seen to be suspension such important regulations as data protection, and then this could ca handling an increase in complaints, damage our customers conf idence in us as a company, lead to a decrease in customer loyalty and ultimately the loss of their business. From a company point of view the impacts are possibly the greatest. Just a few potential knock on effects from non-compliance are loss of customers, brand damage, legal consequences including large fines and potentially losing out independence to trade. Disciplinary action can lead to loss of staff and this brings further impacts such as the time and cost of recruiting and training new staff and all of these could eventually impact our ability to provide a desired service to our customers.Analysis of the problemIn trying to identify options to solve the problem of advisors inconsistently adhering to compliance regulations, I first looked at gathering as much information as I could in to how much it was affecting my department and if there were any contributing factors to the problem. I liaised with our lumber analysts. The QA team had recently marked a sample of the calls we make within the department and informed me that in the calendar month of family line they sampled four calls from apiece team within the department. This was made up of one inbound call (calls where the customer calls npower) and one outbound call (calls where we call the customer) for two advisors on each team. There are 18 teams so this is 36 advisors that were sampled and scored. The results showed that of the advisors monitored only 69% were amply compliant. This is cause for concern then as the target is 100%. pastime on from this, I needed to do further investigation.My time, however, is actually valuable and for me to take on such an investigation completely is not feasible. I discussed the problem with my manager and we came up with an idea to help us follow up the results from the QA Teams quality checks. Within our own operations separate (5 Teams) we asked each manager to mark two calls for each of their advisor focussing solely on whether or not the advisors we re following compliance regulations that we must adhere to. In the first week of October, each manager carried out the quality checks for their teams. The results showed that we were 50% compliant as an operations assort. Following these results each manager went out to the advisors that were not following the compliance regulations and gave them a training session as well as an informal warning that this kind of action was not acceptable and that compliance must be adhered to at all times.The managers including myself then left-hand(a) the advisors for a couple of weeks and then went back and completed the same quality checks once more. The second time around we noticed an improvement as we scored 70%. However, we were and still are a long way short of our ultimate goal. Following on from this, I devised what I saw to be a simple yet effective questionnaire that would be completed by a sample group of advisors. The purpose of the questionnaire was to establish possible resolves why the advisors failed to be consistent in regards to meeting compliance when speaking to customers on the telephone. I looked to address such matters as how confident they were that they were personally 100% complaint 100% of the time, were they aware of the tools that npower provide to assist them in being complaint, what barriers they have encountered that make it difficult to be compliant and what do they feel would ensure that they were 100% compliant 100% of the time going forward.The results of the questionnaire showed that the advisors knew what was required of them to be compliant and that they recognised the implications of not being compliant. It also showed that all of the advisors were aware of the various support tools that npower provides them to help with compliance though not all of them used them. This suggests then that the problem of being inconsistent in regards to compliance may be down to advisor attitude or focus but at this point I wanted to avoid do assu mptions. With all of this information, I used a simple fishbone to drill down for possible reasons for these inconsistencies. I looked at the following headings and then added the possible reasonsConfidence (lack of)* absurd message* Un tripping on whats expected* Cannot deal with conflict (from customers)* DPA doesnt feel natural (in call structure)* Situations outside of the norm (3rd party occupational group on behalf of the customer)Knowledge (lack of)* No or little training (new to business)* Lack of communication (not advised of possible changes)* Inconsistent message (unsure what is correct)Skill* Unsure how to resolve conflict* Not certain how to incorporate data protection in to their call structure * Not able to control a call (allows a customer to drive a conversation, potentially skipping past vital areas for not wanting to interrupt)Attitude/Behaviour* Doesnt understand potential consequences* Doesnt like change* Refuses to complyAfter considering all of the above the potential solutions to my problem could be creating a guide that points out to advisors what they must do to be fully compliant but that isnt rigid in its delivery so that the advisors can make it their own. Ensuring that the guide and its use is dexterous out in a clear manner that makes sure there are no questions unanswered. Providing the advisors with additional training to enable them to capably and confidently deal with situations of conflict i.e. if a customer refuses to go through data protection. Finally, devising sure that the consequences of non-compliance for both advisors and the company are cl earlier communicated.Resolution of the problemI went to manager with my findings and stated what I wanted to achieve. I needed the goal to realistic and to be measurable. Remembering that QA Team reported the department to be 69% compliant for the month of September my goal statement was this * To decrease the compliance fail rate in our department by 15% during the month of No vember based upon 36 evaluations. In making this statement, I ensured that if would be a fair reflection since it would match the original investigation completed by the QA Team. Its SMART, because I have a special goal that can be metric against previous findings. Its both achievable and realistic as all managers go away make numerous quality checks throughout the month and Im trying to achieve the ultimate goal of 100% compliance but instead make a miserable but reasonable step towards it and finally, its time bound as all steps will be put in place and measured throughout November. Once the goal had been machinate, my manager and I held a brain storming session to look at possible options to resolve the problem. Further to those I mentioned earlier, we came up with these additional ideas* Speech Analytics* Scripts for data protection* A specific inbound call team* A specific outbound call team* Feedback, train and evaluations* An inbound and outbound call decision making tr ee* Brief to include whats expected and what the consequences are for non-compliance* Compliance champs* Compliance tick pallAfter we had come up with these various options I went away and unconquerable which would be the best course of action. To help me decide I used a simple Pros and Cons method. I put each of the above options in to a table and then listed what the advantages and disadvantages were. Below, I have just briefly outlined some of the key points for each one.Speech analyticsPros* It saves time (its all automated, listening to and identifying key words and phrases in conversations) so managers dont have to do manual checks. * A large sample is gathered (it pulls data from all recorded calls) therefore the reflection is very accurate. * Reports can intimately be pulled, since all data is compiled and exported in excel spread sheet format.Cons* Its not an immediate solution. Speech analytics for npower is in early testing stages and its unlikely to be available for at least another year.* Cost Its very expensive to implement and so even to run in a small test environment is currently unlikely. Scripts for data protectionPros* It would clearly set out what needs to be tell (no grey area)* Advisors would have something to reference at all times* Can easily be updated when changes occur* Managers could easily cover this in a train sessionCons* Advisors may not feel it comes across as natural* Advisors may forget to keep it on their desk each daytime* It would need to be updated with each new change (potentially old ones could be in circulation)* Repeat contact customers would have to go through the exact same process each time and may feel it comes across as roboticSpecific inbound/outbound call teamsPros* Advisors would deal with only one call type (one set of compliance regulations, more specialised, little hazard of failure)* Becoming specialised may increase confidenceCons* It may not be feasible to have a enough specialised teams to de al with the workload * We would lose multi-skilled advisors, impacting our ability to deal with other work volumes * Specialised teams leave us vulnerable to outside influences such as absence.Compliance ChampsPros* Position of responsibility for trusted advisors* Someone on hand to reference in uncertain situationsCons* Those not chosen may feel disappointed* The cost of taking advisors away from completing work may not be feasible in such a busy time * Having to wait for a Champ may impact customer wait times and thus service * Takes ownership and responsibility away from the advisorsCompliance ChecklistPros* Advisors already use something similar, so it would be familiar* Advisors could clearly track what they have and havent asked* Peace of mind as it states clearly what they must ask* Natural, as it states what they must ask but doesnt tell them how to do it* Cheap and easy to implement* Easy to amend when changes occur* Advisors can easily keep it with them either paper based or electronically* Puts the responsibility on the advisor* Best use can be coached aroundCons* moldiness be altered with each change (old ones could be left in circulation) * Puts the responsibility on the advisors (must be trusted to use it) After evaluating the options and the pros and cons to each. I decided to go with a compliance checklist. Once I had decided on what I believed to be the best solution I asked myself two important questions, in various decision making models these are also known as Acid Tests 12. Acid Test 1 If I implement all of my plans for action will my problems be overcome? In considering the answer I thought back to areas that I had identified earlier that linked into the problem of inconsistent compliance. To follow-up these were things such as * Advisors were unsure what they should be asking.* They lacked confidence that they were saying all the right things. * They could often miss important information if interrupted by a customer before the complia nce checks were complete. * The solution needed to be simple and easy to implement, so that it was clear and simple to train out. The majority of my advisors already use a checklist of sorts to capture the work they complete and how they contacted the customer, by adding compliance prompts to this it creates a visual aid for the advisors reminding them of what they need to ask and it remains in a background signal that they find familiar. Also, because the advisors are able to tick off the various requirements as they go along it makes it very clear what must be asked and its less likely that theyll miss things out if they are interrupted as they can simply go back along the list and pick up where they left off.Its also likely to come across as more natural when the advisors are talking to them customers as well as again it only prompts them with what they need to ask rather than telling them how to say it. Finally, its relatively cheap to implement, it isnt very time consuming to put in place and its something that can be done immediately. A copy of the checklist is attached (Appendix A) Acid test 2 If I get rid of all my problems will I achieve my objectives? Again, the answer should be yes. My solution will give advisors something black and white, thats clear and easy to understand and familiar to them in their day to day role. This should in turn give them the added confidence when talking to customers on the phone.There is, however, a human element. This is that the solution once trained out and implemented, relies upon the advisor taking some ownership and making sure that use it every day even if they feel confident that they are fully compliant. Because this is a personal choice there is no plan that I can implement that will solve this. However, as a company we do have measures already in place to manage this. If an advisor is proven to have the skills and the knowledge to be fully compliant and yet for whatever reason chooses not to, then I or any other manager would need to ensure that this is managed in the proper fashion.Implementation and communication of the solutionAs previously stated the advisor already usage a data capture sheet in their day to day jobs. I have taken that and added some simple yet clear checklist boxes that prompt the advisors on what they need to be asking when speaking to customers on the telephone. I will start off with a trial in my operations group and then if the desired results are proven then I will discuss with my manager a plan to roll it out to the whole department. Ill start by holding a small group meeting with my fellow team managers, briefly describing the problem that Ive been looking in to. Ill present my solution and tell them how I would like it to be used. The managers including me can then go out to our own teams and deliver the message in a brief team meeting. The compliance checklist will be distributed via email to the managers and advisors alike. This way the advisors can cho ose to grade it off and fill it in manually or they can simply fill in in on their PCS.This also means that they will always be able to access a copy even if they have to move desks as it will be saved to their email. Following this, I would plan to follow up with some side by side observations. This would be to ensure that the advisors are using the checklist as intended and it also gives me the chance to answer any questions that they may have as well as offer advice and praise where they are doing things well and hopefully begin to build that confidence in their ability back up. As far as monitoring and reviewing of the situation, this should be quite straight forward. I know what the problem is and I have identified a list of causes.I also know clearly what I expect to achieve from the solution. I perform at least one quality check on each of my advisors each week, so these will prove useful when monitoring progress in this area and the results should be clear to see. These qua lity checks are always given to the advisors as feedback and trends from multiple quality checks are used to build useful coaching sessions. The feedback that I cod from the advisors at this point should also allow me to monitor if they are using my solution as expected and how confident they feel with it. As a department, we also receive daily, weekly and monthly reports.These will enable me to view the progress of the other teams in my operations group to see if they are showing the results that are expected. I will raise the matter for discussion in the weekly operations group meeting and this will allow me to receive feedback from my fellow managers and get their thoughts on what is and potentially isnt going well. Finally, the QA Team will perform another quality check across a random sample of the department. This will by chance be the ultimate mark of whether or not my solution has been successful. If so, then there should be a significant increase in the percentage of advi sors that excrete compliance.

The key steps of the implantation

The key steps of the nidationnidationThe life journey of a fertilized egg consists of some stages right from the menses of conception to the point of birth which is one of natures wonders. However, an prerequisite stage in this journey is the serve well of nidation. Implantation is generally be as an event in which an conceptus becomes progressively attached to the wall of the uterus during ahead of time gestation period. This process is pivotal to the events that occur later in pregnancy. match to Makrigiannakis (2005), nidation is an active process in which a blastodermic vessicle apposes, attaches and progressively invades into the endometrium to establish the situationnta (Figure 5). From this definition, we cannister deduce that the embryo undergoes the process of nidation at the blastodermic vessicle stage (Figure 1). Implantation is a process that occurs in mammals and it takes places in the endometrial lining of the uterus.IMPORTANCE OF IMPLANTATIONImplantation is a key event in the reproductive physiology of mammals as it is a pre-requisite for further embryonic development. It is the first stage in the process of placental formation which is in turn is a authoritative component of fetal development as it serves as a medium for nutrient absorption, gaseous exchange and waste disposal. Physiological defects in humans and opposite mammals get hold of gone further to empha coat the importance of the nidation process. Implantation defects have been associated with non-chromosomal early pregnancy loss and infertility (Makrigiannakis, 2005). Many complications that show up late in pregnancy such as pre-eclampsia and pre experimental condition labour appear to have originated early in pregnancy with abnormalities in the process of nidation and placental development (Norwitz, 2006). A nonher implantation defect is a phenomenon known as ectopic pregnancy. In this case, the blastodermic vessicle implants orthogonal the uterine cavity unremar kably in the fallopian tubes although ectopic implantation could likewise occur in the cervix, abdomen and ovaries. A good understanding of the steps involved in the process of implantation and the component parts controlling these steps are necessary in order to be able to influence clinical proscribedcomes in humans such as simplification of recurrent mi abrasionriages and improvement of implantation rates in both natural and assisted reproduction. This will also be beneficial to the use of animals in the orbit of investigate and agriculture. A greater detail of the events that take place beforehand and during the process implantation shall be discussed hitherin.PRE-IMPLANTATION DEVELOPMENTThe developmental events that take place amid the dressing of the ovum and the implantation of the blastodermic vessicle are important in order to understand the process of implantation. Following fertilization, a process known as cleavage occurs (Figure 1). Cleavage is the mitotic d ivision of the cells of the pass oning embryo without any growth. This starts from the cadence the embryo is at the 2-cell stage and each cell continues to divide up to the morula stage. At this point the embryo is a solid ball of 16 or to a greater extent cells. In humans, this stage is normally observed at about 4 days after fertilization. In continuation of development, the morula undergoes a process known as comp save. Here, the embryonic cells begin to change shape and gap junctions start to form mingled with adjacent cells. The inner cells of the embryo then start to differentiate from the outer(prenominal) cells as different genes are organism expressed in the inner and the outer cells. Blastocyst formation follows shortly after and the inner cells give rise to the inner cell fold whilst the outer cells give rise to the trophoblast cells (Figure 1).A bulky knowledge of the structure of the blastodermic vessicle is important as each of its structural components land a n important usage in the process of implantation. The inner cell mass of a blastodermic vessicle gives rise to the embryo ripe while the trophoblast gives rise to the fetal component of the placenta (Schoenwolf et al., 2009). The process of implantation is generally known to take place a few days after fertilization and the uterine wall is ready to accept the implanting blastodermic vessicle during a limited period of time out expression of which it may not optimally support the implantation of the embryo. This period of time is known as the window of implantation (Psychoyos et al., 1995 Klentzeris, 1997).THE BLASTOCYST AND THE UTERUS BEFORE IMPLANTATIONIn the build up to the implantation process following pre-implantation development, there are a bite of necessary events that take place. First of all, there has to be a receptive and hormonally primed uterus bear witness. The uterus is composed of 3 layers namely the endometrium, perimetrium and myometrium (Figure 2). The endo metrium which is the most important uterine tissue involved in implantation consists of the luminal epithelial tissue, the stroma and the germinal basalis (Yoon et al., 2004). The hormone progesterone, which is secreted by the corpus luteum, is actively involved here as it makes the already thickened endometrial lining of the uterus more favourable for the implantation of the blastocyst. The thickening of the endometrium is due to the effect of estrogens (Norwitz, 2006). The blastocyst is then transported to the uterus via signalling mechanisms and arrives there at about 5 to 7 days after fertilization (Bischof and Campana, 1996). After the blastocyst arrives in the uterus, it begins to move towards the endometrium with the inner cell mass positioned towards the endometrial lining (Bischof and Campana, 1996). Before any further interaction with the endometrium, the blastocyst must undergo a process known as hatching. This simply involves the blastocyst boring a hole through with(p redicate) the zona pellucida with the aid of enzymes and crush out. It is a general school of thought that serine proteases are responsible for this process although the mechanisms behind its action are not clearly understood (OSullivan et al., 2002). After hatching, the blastocyst is naked of all its original investments and can interact directly with the endometrium (Schoenwolf et al., 2009). At this time, blastocystis also known to secrete moleculesthat affect the activity of the ovary, fallopian tube and the endometrium (Norwitz, 2006). Shortly before the blastocyst comes in bear on with the endometrium, thetrophoblastdifferentiates intotwo different cell masses, which are the inner cytotrophoblast and the outer syncytiotrophoblast which is formed as a result of the fusion of cytotrophoblast cells.PATTERNS OF IMPLANTATION there are three known patterns of implantation which are centric, eccentric and interstitial (Wimsatt, 1975). Centric implantation occurs when the embryo exp ands and increases in size before implantation, then stays in the centre of the uterus ( lee(prenominal) and DeMayo, 2004). Examples of animals that undergo this pattern of implantation entangle rabbits, dogs, cows, pigs, sheep, horses and a number of marsupials. Eccentric implantation occurs when the embryo is small in size and implants inside the endometrium usually taking place on the side of the uterus, opposite to the me abouttrium (Lee and DeMayo, 2004). Examples of animals that show this pattern of implantation include rats, mice and hamsters. In Interstitial implantation, the embryo is also small and it invades through the endometrial epithelium into the subepithelial connective tissue (Lee and DeMayo, 2004). Examples of animals under this category include guinea pigs and humans (Wimsatt, 1975).KEY STEPS OF THE IMPLANTATION exerciseThere are three key steps in the process implantation namely juxtaposition, attachment and onset.AppositionThis is the first major step of t he implantation process following the hatching of the blastocyst. During apposition, the blastocyst comes in slight contact forming a weak bond with the uterine luminal epithelium. Microvilli on the apical find of the cytotrophoblasts interlock with microprotrusions called pinopodes (Figure 3) which are present on the apical surface of the endometrial epithelium (Norwitz et al., 2001). This interaction involves changes in the expression of cell adhesion molecules and extracellular matrix (ECM) proteins (Nagaoka et al., 2003). Pinopodes are progesterone-dependent organelles, and they have been suggested to be indicators of endometrial receptiveness (Nikas, 1999). In humans, they are usually visible on days 20-21 of the menstrual cycle prior to the time of implantation (Nikas, 1999). They could facilitate implantation by preventing the blastocyst from being swept away by uterine cilia (Stavreus-Evers, 2005). It has been identified that high molecular weight mucin glycoproteins spe cially MUC1, are dominant inhibitors of embryo apposition and attachment (Thathiah and Carson, 2002).However, a decrease in the expression of MUC1 at the time of implantation could facilitate blastocyst apposition (Thathiah and Carson, 2002). During apposition, soluble mediators such as chemokines e.g. CX3CL1, CCL7, CCL14 and CCL4 have been install to establish a dialogue amid the maternal cells and those of the blastocyst (Hannan and Salamonsen, 2007). Chemokines are a large family of chemotactic cytokines, nearly known for their functions in leucocyte recruitment and activation (Dominguez et al., 2003). They have a wide range of functions and have been implicated to play a role in implantation (Dominguez et al., 2003). Chemokines have been localized in areas of inflammation and they are suggested to be potential mediators of inflammation (Feng, 2000). This could be the reason why blastocysts tend to implant on scar tissue from caesarean sections which is an area of inflammatio n (Dominguez et al., 2005). The dialogue between the maternal and blastocyst cells has important influences on the development of the implanting blastocyst and maintenance of endometrial receptivity (Hannan and Salamonsen, 2007). It also results in the expression of a unique array of adhesion molecules on the surface of both fetal and maternal cells, promoting the attachment of the trophoblast cells to the endometrial epithelium (Hannan and Salamonsen, 2007).AttachmentFollowing apposition, the next step in the process of implantation is known as attachment or adhesion. This is characterized by increased physical contact between the blastocyst and the uterine epithelium (Norwitz et al., 2001). At this point the blastocyst can no longer be dislodged. A ligand carbohydrate known as trophinin has been identified as an adhesion molecule that mediates the initial step of attachment of the blastocyst to the endometrial epithelium (Fukuda and Sugihara, 2008). Trophinin mediates cell adhesio n by homophilic Trophinin-Trophinin binding (Fukuda and Sugihara, 2008). A carbohydrate-binding protein known as L-selectin which is expressed in the blastocyst, has also been discovered to play a role in human embryo attachment (Genbacev et al., 2003). Interaction between L-selectin on the blastocyst and L-selectin ligands on the endometrial surface allows for loose attachment and rolling of blastocyst to its implantation site ((Fukuda and Sugihara, 2008). The human Chorionic Gonadotrophin (HCG) produced by the blastocyst up consecrates trophinin expression on pinopodes and down regulates MUC1 expression (Fukuda and Sugihara, 2008). The blastocyst then adheres to the pinopodes by trophinin-trophinin interaction (Figure 4). A substance known as heparin Binding Epidermal Growth Factor (HB EGF) has also been implicated in blastocyst attachment (Lim and Dey, 2008). This growth instrument is expressed by the endometrium whilst its receptors are present on the blastocyst. This interact ion also helps in facilitating the attachment of the blastocyst.Figure 4 Proposed role of L-selectin and trophinin in human embryo implantation. Source Fukuda and Sugihara, 2008. (a) A human blastocyst entering the uterine cavity is prevented from attaching to the endometrial epithelia by MUC1, except for epithelia that express the L-selectin ligand (T). The human blastocyst expresses L-selectin (L), and rolls on the surface of the endometrium covered by glycocalyx. (b) The blastocyst feebly interacts with the glycocalyx. Here, human chorionic gonadotropin (hCG) which is secreted from the blastocyst, acts locally on endometrial epithelia to induce trophinin expression. (c) Trophinin expressed by endometrial epithelia is enriched in the pinopodes, the structure extended above the glycocalyx. MUC1, which carries the L-selectin ligand, is down-regulated from the endometrial epithelia underneath the blastocyst, allowing direct contact and attachment of blastocyst trophectoderm cells and pinopodes via trophinin-trophinin binding.InvasionThe next step which is critical to the implantation of the blastocyst is known as invasion. As the term implies, this involves the infiltration of the endometrium by the cytotrophoblast cells of the blastocyst. This starts with the progression of the trophoblast cells between the adjacent endometrial epithelial cells to reach the underlying basement membrane. This membrane is destroyed, allowing the trophoblast cells to reach the stromal compartment (Bischof and Campana, 1996). The syncytiotrophoblast undergoes proliferation and invades the endometrial stroma. The progressive invasion of the blastocyst into the endometrium continues until the blastocyst is completely embedded in subepithelial stromal tissue and the uterine epithelium grows to cover the implantation site (Norwitz, 2006).The syncytiotrophoblast cells continue to develop quickly and call the blastocyst until it has completely embedded itself in the endometrial stroma. In the syncytiotrophoblast, fluid-filled spaces known as lacunae are formed as a result of the fusion of syncytiotrophoblast cells. The lacunae are separated by trabeculae and they transform the syncytiotrophoblast into a sponge-like material (Bischof and Campana, 1996). The trabeculae are arranged radially, and cytotrophoblastic cells divide within the trabeculae, leading to the formation of capital chorionic villi (Bischof and Campana, 1996). Following this event, the primary villi grow and branch into secondary and tertiary villi (Bischof and Campana, 1996). This process is known as placentation. A wide range of doers e.g. cytokines, integrins, matrix metalloproteinases (MMPs), Leukaemia Inhibiting Factor (LIF) e.t.c have been found to play a role in the invasion process (Makrigiannakis, 2005 Norwitz, 2006). The role of these components in the process of implantation shall be discussed shortly under the factors that regulate implantation.Figure 5 Implantation of the human blas tocyst step by step. Source Bischof and Campana, 1996. (1) Transport. The blastocyst arrives in the uterus after fertilization. (2) Orientation The inner cell mass is positioned towards the endometrial lining. (3) Hatching The zona pellucida is perforated reservation way for the release of the blastocyst. (4) Apposition The blastocyst is now in close contact with the endometrial lining solely no connections have been established. (5) Adhesion Connections are established between the embryo and the endometrial epithelium. (6) Invasion Thin folds of trophectodermal cells intrude between the endometrial epithelial cells. (7) Syncytialization some trophectodermal cells fuse to form syncytia which grow and invade the endometrial stroma. (8) Villous formation The cytotrophoblastic cells migrate between the syncytia followed by the fetal stroma. This will lead to the formation of the placental villi.The cells of the endometrial stroma react to the presence of the blastocyst and the secre tion of progesterone by differentiating into metabolically active, secretory cells called decidual cells (Schoenwolf et al., 2009). This response is known as the decidual reaction or decidualization. In humans, this begins in the secretory phase of the menstrual cycle. The decidua is also known as the maternal portion of the placenta (Gilbert, 2006) and it is believed to provide an element of control of trophoblast invasion during implantation (Loke and King, 1995). The decidualized stroma cells have been found to secrete prolactin and Insulin-like Growth Factor Binding Protein-1(IGFBPI) which are held to function in complex gene networks that function in the economy of trophoblast invasion as easy as many other endocrine and paracrine factors (Bazer et al., 2010). This regulatory function is required for the optimal implantation of the blastocyst as the invasion of the cytotrophoblast to the proper attainment is a major factor in determining pregnancy outcome (Norwitz, 2006). Ex cessive invasion resulting from the inability of the decidua to control the invading cytotrophoblast cells could lead to an unusually pissed attachment of the placenta to the myometrium (placenta accreta), extension into the myometrium (placenta increta), or invasion through the myometrium into adjacent organs also known as placenta percreta (Norwitz, 2006). Insufficient cytotrophoblast invasion has also been associated with pre-eclampsia (Lyall, 2006 Lee et al., 2010) which is a medical complication that presents itself late in pregnancy. During implantation, a process known as angiogenesis has been identified to be important (Sherer and Abulafia, 2001). Angiogenesis is the growth of new capillaries from exist blood vessels.In this case, it occurs in the endometrium and takes place throughout the implantation period. Endometrial angiogenesis starts with the degradation of the capillary vessel membrane, creating a means through which migrating endothelial cells proliferate to crea te a new lumen and further vessel maturation (Sherer and Abulafia, 2001). This vascularization functions to maintain endometrial structure and receptivity. Angiogenesis is known to be mediated by some factors present in the endometrium such as fibroblast growth factor, vascular endothelial growth factor and platelet activating factors (Norwitz 2006 Sherer and Abulafia, 2001).FACTORS THAT REGULATE IMPLANTATIONThe regulation of implantation and early development is dependent on a wide range of factors. Although the molecular and cellular mechanisms behind implantation are not well understood, it is apparent that multiple factors (including maternal and fetal) are needed to synchronize blastocyst maturation and uterine receptivity up to the point of initiation of implantation and through the process of implantation (Norwitz, 2006). A closer look will now be taken at some of the important factors associated with implantation and early pregnancy maintenance.Maternal factorsStarting with the uterine (maternal) side, there are a lot of components to consider. Cytokines and growth factors have been shown by different studies to be important to the maternal role in implantation. These include interleukin-1 (Sheth et al., 1991 Simon et al., 1996 Stewart and Cullinan, 1997 Huang et al., 1998), Interleukin-2 (Stewart and Cullinan, 1997), Insulin-like growth factor I and II (Stewart and Cullinan, 1997 Giudice and Irwin, 1999), transforming growth factor a and (Slowey et al., 1994 Stewart and Cullinan, 1997 Godkin and Dore, 1998), vascular endothelial growth factor (Athanassiades et al., 1998) and leukemia inhibitory factor (Cullinan et al., 1996 Stewart and Cullinan, 1997). The mode of function of the leukemia inhibitory factor is not well understood but has been established as a critical factor in the process of implantation (Stewart et al., 1992 Cheng et al. 2002). These cytokines and growth factors all work towards facilitating the communication between the blastocyst a nd the uterus whilst promoting endometrial proliferation and differentiation (Norwitz, 2006). They have also been found to regulate endometrial angiogenesis and vascular permeability (Norwitz, 2006).As mentioned earlier, some steroid hormones such as Progesterone (Peyron et al., 1993) and Oestradiol-17 (Miller, 1988) have also been found to be important. They function in the proliferation of uterine epithelial cells and endometrial stromal cells (Norwitz, 2006). Some changes in the uterine luminal epithelium such as the expression of pinopodes (Nikas, 1999) and MUC 1 (Thathiah and Carson, 2002) have been suggested to be important for blastocyst recognition and attachment. Transcription factors such as the peroxisome proliferator activated receptor-s (Lim et al., 1999 Barak et al., 1999) have been identified to function in defining the molecular mechanisms by which the regulatory factors exert their make at a cellular level (Norwitz, 2006). Studies have shown the relevance of some o ther components such as homeobox genes Hoxa-10 and 11 which have been found to regulate the responsiveness of stromal cells to progesterone (Benson et al., 1996 Taylor et al., 1997 Lim et al., 1999), Cyclooxy-genase-2 which regulates prostaglandin production (Norwitz and Wilson 2000) and oxygen tension (Genbacev et al., 1997) which has been found to promote trophoblast vascular mimicry by initiating integrin expression. Also, proteins such as Rac1 and RhoA which are found in stromal cells have been implicated in trophoblast invasion (Grewal et al., 2008).Fetal factorsEvaluations of the blastocyst (fetal) factors also reveal that present here, are some of the groups of factors present on the maternal side of implantation as they possess some overlapping functions. Cytokines and growth factors, in addition to facilitating communication between the blastocyst and uterus, could also enhance trophoblast differentiation and invasion. These include Interleukin-1, Interleukin-6 (Stewart and Cullinan, 1997), leukemia inhibiting factor, transforming growth factor a and , insulin-like growth factor II and colony stimulating factor-1 (Stewart and Cullinan, 1997, Cohen et al., 1997). Some trophoblast proteinases and inhibitors such as the matrix metalloproteinases (Makrigiannakis, 2005) and cathepsin B and L (Afonso et al., 1997) have also been found to regulate trophoblast invasion. The expression of some adhesion molecules e.g. integrins have been identified in the enhancement of trophoblast invasion. Some of them include integrin a64, integrin a11 and E-cadherin (Lessey, 1998 Lessey and Arnold, 1998 Damsky and Fisher, 1998). Some other important factors include prostaglandin E2 which aids the process of endometrial apoptosis and platelet-activating factor which stimulates uterine prostaglandin production (Norwitz, 2006).Immunological factorsThe immunological interactions between the blastocyst and the uterine decidua are essential in the regulation of the implantation p rocess. Implantation is of immunological significance because the blastocyst contains half of its paternal genes thusly it is immunologically foreign to its mother. Despite this fact, blastocyst implantation cool it turns out to be a successful process and the blastocyst is not rejected by the maternal immune system during normal implantation. This is down to the action of immunological factors. These factors are a combination of elements expressed by both the blastocyst and the uterus and they act together to ensure fetal survival. On the maternal side such factors include Interleukin-10 (Roth et al., 1996 Roth and fisher, 1999) which plays an important role in immunosuppression thus reducing the activity of the maternal immune system against the foetus (Norwitz, 2006). Another factor is 2, 3-dioxygenase (Kamimura et al., 1991 Munn et al., 1998) which has been found to be responsible for macrophage action during implantation (Norwitz, 2006). Uterine natural killer cells found in t he stroma also play a role here as they produce cytokine, chemokines and angiogenic factors which all promote and regulate trophoblast invasion (King and Loke, 1997). On the fetal side, factors such as histocompatibility antigen, class I, G (HLA-G) have been found to be involved in preventing the maternal immune rejection of the semi-allogenic foetus (Lanier, 1999 Norwitz, 2006).Coordination of the regulatory factors within the window of implantationThe window of implantation as defined earlier is characterized by the perfect synchrony of all the components that play a role in the implantation process. These include the endometrium, the blastocyst and the factors regulating the process of implantation. Figure 6 below illustrates how all these factors are coordinated during the implantation window. This shows that within the window of implantation, the endometrium is highly influenced by steroid hormones (oestrogen and progesterone) and the interaction between the blastocyst and the endometrium is as a result of stage-specific actions of different implantation factors.Figure 6 Events that take place within the implantation window. Source Achache and Revel, 2006 (A) Endometrium proliferates under the enhancement of estrogen. (B) Progesterone from follicles that have been luteinized leads to endometrial differentiation. (C) The blastocyst makes its way to the uterus via the ostia and rolls freely over the endometrium with the aid of L-selectin signals. (D) MUC-1 repels the blastocyst and prevents it from adhering to areas on the endometrium with poor chances of implantation. (E) Cytokines and chemokines attract the blastocyst to the optimal implantation spot. (F) Adhesion molecules (e.g. integrins and cadherins) attach the blastocyst firmly to the endometrial pinopodes to ensure successful implantation.The functions of all the factors mentioned earlier further emphasize the importance of these components to the process of implantation. A lot of studies have also been carried out on some of these molecules to further establish their importance. A notable one amongst these molecules is the leukemia inhibitory factor. As mentioned earlier, this molecule has been identified to be critical to the process of implantation. Studies revealed that implantation did not occur in female transgenic mice that were homozygous for the deficiency of the gene responsible for the leukemia inhibitory factor (Aghajanova, 2004). It was further proven that the lack of implantation was not caused by faults in the embryo because the implantation of the same embryos occurred when they were transferred to pseudopregnant recipients. The addition of exogenous LIF to the females with this defective gene throughout the period of normal implantation restored implantation sites and allowed proper attachments of the blastocysts (Aghajanova, 2004). LIF and LIF mRNA has also been shown to be expressed throughout the menstrual cycle of women with proven fertility (Arici et al. , 1995 Charnock-Jones et al., 1994).This was associated with peaks in the mid and late secretory phase, and in early pregnancy (Aghajanova, 2004). Leukemia inhibitory factor has also been found to be present in uterine flushings within the implantation window in fertile women. This characterized by gradually increasing concentrations from 7 days to 12 days after the LH surge (Laird et al., 1997). In future, the evidence and information obtained from similar studies may be applied clinically through a well regimented administration of LIF in a pharmaceutical form to improve implantation rates in both natural and assisted reproduction.IMPLANTATION AND ASSISTED REPRODUCTIVE TECHNOLOGY (ART)Successful pregnancy outcomes from assisted reproductive techniques such as in vitro fertilization (IVF) have largely depended on the process of implantation. The advances in ART techniques have not had a significant effect on implantation rates (Donaghay and Lessey, 2007) hence a lot of measures hav e been taken by ART units over the years in an attempt to optimize implantation rates. Assisted hatching (Cohen, 1991) is a well known procedure carried out in this regard. This involves the manual perforation of a blastocysts zona pellucida in order to separate the blastocyst from the zona pellucida just as it would have occurred during natural hatching. This may increase implantation and pregnancy rates in IVF cycles (Chao et al., 1997). The function of regulatory factors in the process of implantation indicates that a number of biomarkers can be adapted from these to determine the ideal period of endometrial receptivity which can be traced and monitored during IVF cycles (Haouzi et al., 2009). These may include the detection and monitoring of some of the molecules and steroid hormones involved in implantation by making use of samples obtained from IVF treatment cycles such as follicular fluids and embryo culture supernatants. Fluorescent markers can also be used to highlight prot eins and any other key component in the blastocyst involved in implantation. Continuous studies are being performed with the aim of discovering techniques that would improve implantation rates during ART treatments.CONCLUSIONOver the years, the research carried out on implantation and the factors that control implantation has been done making use of mostly animal models with the exception of some that have employed the use of in vitro human systems. The use of animals in the study of implantation has many benefits as many factors and regulatory mechanisms are being discovered. However, it is difficult to precisely extrapolate results obtained from animal data into human cases. This is one of the problems being encountered by implantation studies as the difficulty and ethical significance associated with research using humans make scientists resort to the use of animal models. The process of implantation occurs with the uterus and the blastocyst in synchrony. It has been clearly show n that a lot of factors are responsible but the complete framework of the regulation of implantation has not yet been understood. With continuous research and more human-based studies, a better understanding of the process and regulation of implantation may be achieved in the future.REFERENCESAchache, H. and Revel, A., 2006. Endometrial receptivity markers, the journey to successful embryo implantation. Hum. Reprod. Update. 12(6), 731-746.Afonso, S., Romagnano, L. and Babiarz, B., 1997. The expression and function of cystatin C and cathepsin B and cathepsin L during mouse embryo implantation and placentation. Development. 124, 3415-3425.Aghajanova, L., 2004. Leukemia inhibitory factor and human embryo implantation. Ann. NY. Acad. Sci.1034, 176-183.Arici, A., Engin, O., Attar, E. And Olive, D.L., 1995. Modulation of leukaemia inhibitory factor gene expression and protein biosynthesis in human endometrium. J. Clin. Endocr. Metab. 80, 1908-1915Athanassiades, A., Hamilton, G.S., Lala, P .K., 1998. Vascular endothelial growth factor stimulates proliferation but not migration or invasiveness in human extravillous trophoblast. Biol. Reprod. 59, 643-654.Barak, Y., Nelson, M.C., Ong, E.S. et al., 1999. PPAR da Gamma is required for placental, cardiac, and adipose tissue development. Molecular Cell 4, 585-595.Bazer, F.W., Wu, G., Spencer, T.E., Johnson, G.A., Burghardt, R.C. and Bayless, K., 2010. Novel pathways for implantation and establishment and maintenance of pregnancy in mammals. Mol. Hum. Reprod 16(3), 135-152.Benson, G.V., Lim, H., Paria, B.C. et al., 1996. Mechanisms of reduced fertility in Hoxa-10 chromosomal mutation mice uterine homeostasis and loss of maternal Hoxa-10 expression. Development. 122, 2687-2696.Bischof, P. and Campana, A., 1996. A model for implantation of the human blastocyst and early placentation. Hum. Reprod. Update. 2(3), 262-270.Chao, K., Wu, M., Chen, S., Yang, Y., Chen, H. and Ho, H., 1997. Assisted hatching increases the implantation and pregnancy rate of in vitro fertilization (IVF)-embryo transfer (ET), but not that of IVF-tubal ET in patients with repeated IVF failures. Fertil. Steril. 67(5), 904-908Charnock-Jones, D.S., Sharkey, A.M., Fenwick, P. and Smith, S.K., 1994. Leukemia inhibitory factor mRNA concentration peaks in human endometrium at the time of implantation and the blastocyst contains mRNA for the rec

The Tiananmen Square Massacre History Essay

The Tiananmen Square Massacre History EssayWith thousands left wounded, a seemingly countless number of citizens advertiseed dead, and a landed estate left with a damaged reputation. All of these were the results of a truly unforgettable and shocking so fart which happened on the 4th of June 1989, the Tiananmen Square massacre.In order to bag a better on a lower floorstanding of this historicalal take downt, I have put together almost sub headings and questions to break it down into a more intelligible manner.What is Tiananmen Square?Tiananmen Square, situated in chinas capital, Beijing, is the astronomicalst public space in the world. Being one of the largest tourist attractions in the world, it is surrounded by monumental public buildings that follow its edges and vast spaces in between that echoes this scary as yett. It is named after the Tiananmen Gate (Gate of Heavenly Peace) located to its North. This gate separates it from the Forbidden City. Tiananmen Square is the Third largest city comforting in the world at 440,000m. Today it has great cultural significance as it was the hosted site of several important events in Chinese history, including this noteworthy 1989 declare, which ultimately collar to armed services suppression and the deaths of multiple protestors.What was the do of the protest?After the war between the communists and the Kuomingtang (KMT) party in China, the draw of the KMT, Chiang Kai-shek, fled to Taiwan with his party. As this happened Mao Zedong, leader of the communist party, was given the advantage and then took control and launched multiple communist reforms such(prenominal) as the Great Leap Forward and the Cultural Revolution. The transition was slow, nonwithstanding the pile of the Peoples Republic of China began to accept the change to communism. This was followed by the next chairman, Deng Xiaoping, attempting to calm the system that Mao Zedong had set up. Xiaoping would then try to convert China in his ow n centering. He would begin by slowly easing China into a market economy, alone by the year 1989, these economic and semipolitical changes had already given birth to two groups, groups in which were completely unsatisfied.The first group was es directially a group of students and intellectuals who, in their minds, felt that the reforms had not asleep(p) far enough. The second group was a group of industrial workers who believed, quite simply, the opposite. The workers believed that the reforms had gone too far and thought that they were also beginning to put their way of living in jeopardy. These two groups on April 15 1989 came together to begin their protests.This protest at Tiananmen Square was different than protests prior to this one. For example, the 1987 protest consisted of just students and intellectuals, and the 1989 protest included students, intellectuals and workers. Over a million supporters took part in the pro-democracy protest of 1989. The demonstrators at Tian anmen Square performed daily marches, and chanted The Internationale in their native language. This would be accommodated short after by a hunger strike, another tactic that the protestors engaged in. This tactic was real popular among the Chinese.At the beginning of these protests, some but not all attempts were successful, and actually made a negotiation with the g everywherenment. These negotiations were soon overlooked by the presidency be motility of the visiting of Mikhail Gorbachev (chairman of the Presidium of the Supreme Soviet). This lead to a stagger of press being present. The press rear the protests fascinating and began to cover the scenes with extreme curiosity. Around the time of May 30 1989, the protesters erected the Goddess of Democracy, a symbol in which the people watching this on the television from home could associate the protests with. This statue was also known as the Goddess of Liberty. It was 10 meters tall and was constructed in only quadruple days come forbidden(a) of foam and papier-mch over a metal armature. It was built so big so it would be hard to dismantle by the government. This meant that they would either have to abrogate the statue (an action which would fuel further criticism of its policies) or leave it standing.After what seemed like endless negotiation and the Chinese government asking the students to return to their institutions, in that location was no co-operation between the two sides. This meant that the party elders of the government had to drop out this protest by force.Martial LawOn May 20th, 1989 Deng Xiaoping declared martial law. This is when military forces (in this case the Peoples Liberation Army) are called upon to bring a particular region or an event to a halt by any means necessary. On this day four convoys of military vehicles proceeded towards Tiananmen Square but were no longer able to advance any further upon reaching the thousands of demonstrators. These protesters were lecturing so ldiers and appealed to them to join their cause and they also provided the soldiers with food, water and a roof over their heads. All government forces were forced to retaliate and withdraw their the States on the 24th of May as they were highly outnumbered by the mounds of protesters. The authorities, at this point, saw no way forward.While this retreat by the government initially being seen as the turning of the billow in favour of the protestors went on, in reality every military region was sending units by rail and even by air. Regular airline flights were even cancelled due to the mass amount of military personnel travelling.Fall of the protestBy the time late May had arrived, the protestors were getting very oftentimes disorganised and had no real leadership amongst them anymore. It dragged on so long that the face of Tiananmen Square was filled with serious hygienic problems and had overcrowding issues that werent taken care of. By June the leadership agreed that it was ne cessary to end the turmoil, and that the students occupying the Square should return to their campuses. However, this had many problems and they ended up struggling with the idea of utilise force. Through this, the members of Politburo had to agree that using martial law to restore order was the only option and on June the 1st Li Peng issued a report titled On the True temperament of the Turmoil, which was passed on to every member of the Politburo. This report basically persuaded the members of Politburo that these protestors were in fact terrorists and counterrevolutionaries. The report stated that the students were growing in numbers and their support was gaining strength.As the foiling grew higher and higher the Politburo Standing Committee (PSC) decided that it would be best to clear Tiananmen Square as quickly and as peacefully as possible, but if the protestors would not comply, then the troops were authorized to use force to complete the job. On the evening of the 2nd of June, it was heard that a police jeep ran into four civilians, killing three, and injuring the other. This was the moment that sparked fear in the protestors that the police were trying to advance into Tiananmen Square. Roadblocks were made by the students at major intersections to prevent any further move from the troops, but this didnt stop them. In the early hours of June the 3rd, the first reports of violence on both sides were reported.Military advances to Tiananmen SquareSoldiers and tanks from the 27th and 38th Armies of the Peoples Liberation Army were sent to take control of Beijing and clear Tiananmen Square. The 27th army was controlled and commanded by Yang Shangkun. Reports from the chance show that this army was responsible for most of the civilian deaths. Major universal Xu Qinxian was the commander of the 38th army. He shocked the leadership when he refused orders from General Li Laizhu telling him to clear the square, he instead insisted on a indite order. Xu wa s instantly removed from command and was later jailed for five years and following this, was expelled from the Party.As the word spread and more and more people found out that hundreds of thousands of troops were advancing from all four directions, panic broke out. The protestors began to flood the streets in attempt to block the oncoming troops. It was on this night that the army began to fire live bullets at the protestors, killing many of them. This took place near the Muxidi apartment buildings, home to high-level Party officials and their families. This sparked off riots in Tiananmen Square. The protestors would now vex rocks and Molotov cocktails at vehicles and on the streets and this, in turn, infuriated the officials. at that place were also reports of people burning soldiers alive in their armoured personnel carriers while others were beat out to death. Therefore, soldiers responded by firing at will on protestors.Many of the protestors were seriously injured or killed by the soldiers automatic weaponry, but fortunately rickshaw drivers who ventured out into no-mans-land rescued all they could and brought them to safety. Getting desperate and unable to move forward, the army therefore had to open fire on the civilians blocking their way. This shocked the crowd at first as they did not think that the army would use live ammunition. But this did not drive the people from the streets. The army tried everything in their causality to evacuate the square but the protestors continued to fight back. Gas, smoke and randomly fired bullets were used against the demonstrators. whatsoever of soldiers were even pulled from their tanks and beaten to death by the civilians. approximately of the protestors left, in fear of risking their lives, but there were quieten hundreds of students left in Tiananmen Square by the time the army had reached it. Those who sought refuge in buses were ripped out from them by the soldiers and beaten to death with heavy sticks. I n the early hours of June the 4th the tanks had smashed their way into the square, crushing vehicles and people with their way and by 540am the square had been cleared.Aftermath of the MassacreOn the morning of June the 5th, people who were related to those who were injured or killed tried to enter the blockaded square but were shot at by the soldiers. Even when they tried to run away, the soldiers persisted in shooting them in the back. These actions were repeated several times.Finally order had been restored in Tiananmen Square but protests were still going on in other parts of mainland China. There were large protests in Hong Kong, where people wore black in conjunction with the demonstrators in Beijing. Other large protests were held in Guangzhou and in Shanghai. Many other countries had protests as well, all representing the people of Beijing with black bands worn almost their arms.There is little to no render of how many people were killed during the massacre. Sources range from 1200 to 10,000 (including soldiers). To this day nobody has an official death count number.The Tank ManWhile a convoy of about a dozen tanks headed eastward into Tiananmen Square a day after the military crackdown, a skinny man dressed in a white apparel and black pants holding two grocery bags, stepped in front of the leading tank. This step was a step into history for him. As soon as the tanks reached the man they came to a standstill. They were face to face with this man. He swung his shopping bags beckoning them to turn around and leave, but the tanks didnt move from where they were.When the leading tank tried to turn to the rightly to go around him, the Tank Man would jump to the left in front of it and when it would try to go the other way he would jump in front of it again, stopping the tanks in their path. After a brief standoff, the Tank Man climbed onto the machine and appeared to be trying to talk to the men inside. Shortly after, two men came up and dragged him aw ay.The famous picture of the Unknown Rebel smuggled out of China under the noses of officials and soon appeared on the front pages of newspapers all around the world. This man became a hero, and a legend to some.The fate of Tank Man who carried out his famous act of civil disobedience on June the 5th is unknown, some say he went into hiding and others say he was executed.I felt inspired after I had watched the footage of the man standing in front of the tanks. It took a lot of courage to do such a thing, putting his life at risk for the sake of his people. Its sad to think that he is not very well known in China and is more recognised in other parts of the world. This is due to Chinas censorship that ensures that most Chinese dont know what happened in June 1989.Why did the government kill their own people?This is probably one of the most outstanding queries of the entire protest and in the end its down to individual(prenominal) opinion as to why they opened fire on their own peopl e. This is mainly because the Chinese government has been really secretive about the whole incident and never really let out any information. In my opinion, I think the government had no other choice even though they knew they were doing wrong. The protestors were even putting themselves in danger already before the army even came, people were getting crushed and people were passing out with hunger. Im not aphorism that the government was right to decide to do what they did, because a lot of innocent citizens were killed and this is never right in any case.Reactions from around the worldThe type of footage shown on horse opera television was definitely the first of its type and truly shocked the public. The Chinese governments response was denounced, particularly by Western governments and media. Criticism came all over the world from places such as Eastern Europe, North America, Australia and some Asian and Latin American countries also. Asian countries were found to keep silent throughout the protests the government of India responded to the massacre by ordering the state television to pare down the coverage to the barest minimum, so as not to put their relation with China in danger. North Korea, Cuba, Czechoslovakia and East Germany among others supported the Chinese government and denounced the protests.Underlying Causes.I have done some online research on this topic and it seems as though a few people think that the protests were not as the seemed to be. People ask what would get a group of people to create a historic even like this in the first place? were they trying to appear in the media? Or were they just standing up for what they truly believe? Some people even go far enough as to say that it was the Illuminati U.S government that contacted a few hundred students in Beijing and were contracted to cause chaos and confusion in Chinas capital and that its all part of New World Order. It may seem impossible or crazy, but their opinion is as good as an ybodys and theyre entitled to it.Impact on China and the rest of the world.In Hong Kong, the Tiananmen Square protests led to fears that the PRC would follow up on its commitments under one country, two systems following the impending handover in 1997. In response the Governor of PRC, Chris Patten, attempted to expand the franchise for the Legislative Council of Hong Kong, which led to friction with Beijing. There have been large candlelight vigils attended by tens of thousands in Hong Kong every year since 1989 and these vigils have continued following the transfer of power to the PRC in 1997.There was also a giant impact on the Chinese economy after the massacre. Foreign loans to China were suspended for obvious reasons and tourism gross decreased from US$2.2 billion to just US$1.8 billion. On top of this the foreign direct investment commitments were cancelled and there was a rise in defence spending from 8.6% to 15.5% in the following four years. This was just after a 10 year de cline.Chinas international image was, needless to say, damaged greatly. Western media displayed real footage of the happenings while protestors in Beijing took this opportunity to create banners to display to the cameras in their best English.All international television networks were soon ordered to stop broadcasting their footage during military action, with the government shutting down satellite transmissions. Apparently, the only network that was able to record the scenes of the massacre without hassle during the 4th of June was Televisin Espa ola of Spain. Some foreign journalists were also faced with harassment during the military action. It is said that a cameraman was taken into custody while filing a report from Tiananmen Square via mobile phone. The Police at this time were very strict with cameras and would tell anybody they saw recording to stop immediately.The images that managed to break out of China had powerfully shaped the views of Westerners and policy toward China in the next two decades. As for overseas Chinese students, the Tiananmen Square protests triggered the formation of Internet news services such as the China News Digest and the NGO China Support Network. Before this, there was little on the web. Organisations such as the China bail bond for Democracy and the Independent Federation of Chinese Students and Scholars were formed, although these organisations would have limited political impact in later years.The Tiananmen Massacre todayThe Massacre still lives with us today in different forms. Tourists are able to visit Tiananmen Square itself where the actual incident happened. Also there are various documentaries made and references to this famous event throughout the world. Theres even a 90 minute movie about the famous Tank Man. Songs have been written about the massacre and even paintings and drawings have been inspired by it.No matter how much the Chinese government try to hide this incident it will never be forgotten. April fif teenth 1989 to June 4th, 1989 marks an event forever in history that the Chinese and people worldwide will never forget.

Analysis of Tools for Data Cleaning and Quality Management

Analysis of Tools for entropy Cleaning and select Management info cleaning is needed in process of combining heterogeneous info sources with relation or tables in informationbases. Data cleaning or data purgatorial or data scrubbing is defined as removing and detecting errors along with ambiguities existing in file aways, log tables. It is d single with the aim to improve musical none of data. Data tonus and data cleaning are both related terms. Both are directly proportional to each other. If data is cleansed timely then quality of data will get improved day by day. There are various data cleaning tools that are freely available on net. The tools include Winpure Clean and Match, OpenRefine, Wrangler, Data cleaner and many more. The thesis presents information about WinPure Clean and Match data cleaning tool, its benefits and exercises in running surround due to its three filtered mechanism of cleaning data. Its implementation has been done by taking drillr defined datab ase and results are presented in this chapter.WinPure Clean and MatchIt is one of easiest and simplest three phase filtered cleaning tool to perform data cleansing and data de-duplication. It is designed in such a way that running this natural covering saves time and money. The main benefit of this tool is that we can import two tables or key outs at same time. The software uses fuzzy matching algorithm technique for performing powerful data de-duplication. The functions of this tool are as followsRemoves redundant data from databases in faster way.Correct mis spell outs and incorrect email addresses. It also converts linguistic communication to uppercase or lowercase depending on users demand.Removes unwanted punctuation and spelling errors.Helps to relocate missing data and gives statistics in form of 3D chart. This option can be proven useful in finding population percentage of particular area.It automatically capitalizes first alphabet of every word.AdvantagesIncreases true statement and utilization of database (either professional database, user defined database or consumer database).Eliminate duplicity from databases victimization fuzzy matching de-duplication technique.Increases industry perspectives by using standard appointment conventions with facility of removing duplicate data from original data.Export given file into various formats like access, excel(95), excel (2007), outlook systems and so onApplicationsThe software is made for use from normal users to IT professionals. It is ideal for marketing, banking, universities and various IT organizations.Working of WinPure Clean and MatchClean and Match is made of three components- Data, Clean and Match. Data gives us imported list of tables. Clean option consists of seven modules each having different purposes. The clean section is basically used to analyze, clean, correct and correctly populate given table without removing duplicity. It has infract cleansing modules like Statistics Module, Cas e converter, Text cleaner, Column cleaner, E-mail cleaner, column splitter and column merger.Match section is used to detect duplicity using fuzzy matching de-duplication technique. WinPure Clean and Match contains a unique 3 step approach for finding duplications in given list or database.measure 1 The first step is to pay back which table/s and columns you would like to use to search for possible duplications. mistreat 2 The second step is to specify which matching technique you would like to use either basic (telephone numbers, emails, etc) or advanced de-duplication with or without fuzzy matching (names, addresses, etc.Step 3 The terminal step is to specify which viewing screen you would like to use, WinPure Clean Match offers two unique viewing screens for managing the duplicated records.Limitations of WinPure Clean and Match(a) It has nothing to deal with connectivity and networking of dataset. It but removes redundant words by cleaning and matching data.(b) It is not deri ved from any expert systems like fiction Longwell CSI and lacks client server terminology.(c) It means modifying/updating dataset is not possible once data is imported in tool.Google RefineGoogle refine overcomes the limitations of WinPure Clean and Match. It was earlier called as OpenRefine. It is powerful tool for working with dirty data and cleans, transforms data along with various services to link it to databases like Freebase. OpenRefine understands a variety of data file formats. Currently, it tries to guess the format based on the file extension. For example,.xmlfiles are of course in XML. By default, an unknown file extension is assumed to be either tab-separated value (TSV) or comma-separated value (CSV).Once imported, the data is stored in OpenRefines own format, and original data file is left undistur hind end.Google Refine ArchitectureOpenRefine is a web application that is intended to be run on ones own auto and used by oneself. The machine has server as well as clien t side. The server-side maintains states of the data (undo/redo history, long-running processes, etc.) while the client-side maintains states of the user porthole (facets and their selections, view pagination, etc.). The client-side makes GET and POST Ajax calls to modify and fetch data related information from server side.The architecture has come into existence from expert systems like Simile Long well CSI, a faceted browser for RDF data. It provides a good separation of concerns (data vs. Universal larboard) and also makes it quick and easy to implement user interface features using familiar web technologies.Server-Side It tells about modeling of data and storing it into given repository.Client-Side It tells about building of GUI.Faceted Browsing It is related to facets (text, column). It tells how to use facets in browsing data.Reconciliation Service API It describes a standard reconciliation service structure.5.6. Using Data Quality Services in connecting databasesThis secti on is to provide high quality data by introducing data quality services (DQS) in Microsoft SQL Server. The data-quality solution provided by Data Quality Services (DQS) enables an IT professional to maintain the quality of their data and ensure that the data is suited for its business usage. DQS is a intimacy-driven solution that provides both computer-assisted and interactive ways to manage the integrity and quality of your data sources. DQS enables you to discover, build, and manage companionship about your data. You can then use that knowledge to perform data cleansing, matching, and profiling.It is based on building of knowledge base or test bed to identify the quality of data as well as correcting bad quality of data. Data Quality Services is a very important conception of SQL Server.Utilisation of data cleaning and quality phasesThe process of data cleaning starts from the starting phase when user chooses data from random dataset from internet or nigh books. A framework sh owing utility of these processes is described below in form of sequential steps listed belowStep 1) Choose random datasetStep 2) Shorten it as per user requirementsStep 3) Find whether data contains dirty bits or not.Step 4) Cleanse data by testing it on application platforms like WinPure Clean and Match and Google Refine.Step 5) Then the task of creating high quality data is initiated.Step 6) Connect refined database with SQL server.Step7) Install Data Quality Services (DQS).Step 8) Knowledge base is built through DQS interface.Step 9) After building database, process of knowledge discovery has been started.Step 10) In knowledge discovery process, normalization of string values has been done to replace incorrect spellings and errors.Step 11) It leads to production of high quality data by removing dirty bits of data.Shortcomings of the existing toolsWinPure Clean and Match simply clean data by removing redundant words. It does not give information about synonyms and homophones.This data cleaning tool produces check off correctness level. The tool only gives details of incorrect words and matched words instead of removing similar words. It leads to wastage of memory and less accuracy.Data Quality Services (DQS) is slimly complex for non technical users. A normal person cannot use this quality software without having knowledge of databases.DQS improves data quality with human intervention. If user selects correct spelling of given word, then DQS approves it else reject it.There is no automatic system for detection of strings and synonyms. One has to create set up of SQL in machine to use it.Both tools work syntactically rather than semantically. That is the reason they are unable to find synonyms.These tools corrects given data according to predefined syntaxes like spelling errors, omitting commas etc.Keeping the above shortcomings in consideration, the study has proposed data cleaning algorithm by using String detection Matching technique via WordNet.

Bipolar Disorder Essay -- Psychology Depression Essays

Bipolar Disorder Bipolar disorder is a type of manic depression classified by those touched having extreme polar opposite emotions. Those who accept from bipolar disorder, go from extreme highs (mania) to very lows, (depression). Because this illness deals with such drastic changes in behavior, it is essential that those who suffer contact medical action in treatment of their disorder, unlike other depressions that may be treated with therapy only. Medical treatment with the use of drugs is so important when treating those who suffer from bipolar disorder, because its causes can be predicted to begin at the neuron level. One of these treatments, as discussed throughout this paper, is Lithium in its common for, Lithium Carbonate. Lithium is sight to affect the way the way the synaptic transmitters carry information across the neurons in the body. Although it is unknown how exactly this process works, researches believe that the synapse is the location of the neuron that is affecte d by lithium use. The synapse of a cell can be defined as a point of communication at the gap between dickens neurons or between a neuron and a muscle, (Kalant, 2004). Because the synapse deals with communication, the synapse is an extremely busy and complicated part of the neuron.Due to the belief that Lithium is impacts a cell mainly at the synapse, it also affects the cell at the axon of the pre-synaptic cell, and the dendrites of the post-synaptic cell. An axon is the part of the cell that conducts information away from the cell body, and eventually across the synapse, where the severalise like fibers of the post-synaptic dendrites receives the information.Exact Process UnknownLith... ...Khoury, Aram El, et al. (2001) Effects of Long Term Lithium Treatment on Monoaminergic functions in major depression. Psychiatry Research, 105, 33-44.Lithium-Drug Class, Medical Uses, medicament Side Effects, and Drug Interactions. (1998). Retrieved March 6, 2005 from http//www.medicinenet. com Long, Phillip W. (2005) Pharmacology in Lithium Carbonate. Retrived March 6, 2005 from http//mentalhealth .com/drug/p30-102.htmlSchimelpfening, Nancy. The Chemistry of depression. Retrieved February 28, 2005 from http//depression.about.com/cs/brainch101/a/brainchemistry_p.htmSerretti, A. Et al. (2000). Serotonin Receptor 2A, 2C, 1A genes and response to lithium prophylaxis in mood disorders. Journal of Psychiatric Research, 35, 89-98.Shastry, Barkur s. (2005) Bipolar Disorder an update. Neurochemistry International, 46, 273-279.

Professional Wrestling Proposal :: essays papers

Professional Wrestling ProposalPart IInterest and MotivationThe topic I have chosen to write nearly is the world ofprofessional grappling. There are many reasons as to why this subject hasinterested me. One major reason is that I grew up watching pro-wrestlingon television. As a child, I was fascinated with the spectacle of thewrestling matches and wondered at the wrestlers themselves. At that age, Itook wrestling for what it was. It was a full-contact gladiator sportfilled with exaggerated and extravagant wrestlers, cocky commentators, andinteresting one-of-a kind personalities which added up to a highentertainment value. As I got elderly and more aware of the sport, I did not just see itas another part of sports entertainment but also as a multi-million vaulting horsebusiness which catered to a wide audience. I began to wonder what was itthat made this popular genere work and how it was able to attract thecrowds of people, young and old. I also wanted to enjoy the history ofp ro-wrestling. How did it get started and how it became a part of theAmerican culture? As a fan for several of my childhood years, I now wantedto jockey the real deal behind wrestling.The professional wrestling sport is a very secretive business. Itis on a what you see is what you get basis. Many of the fans book thesport for face value and enjoy it for what it is, even if many of them areuninformed on the inside workings of it all. Although many books have beenpublished about wrestling, a high number of them are as cryptic andsecretive as the business itself. That is why I am motivated to go into anin-depth query to answer and unravel the questions of the professionalwrestling world. Professional Wrestling. Part II Knowledge andPreconceptions.After being exposed to professional wrestling for quite sometime,I became somewhat knowledgeable of the sport. I became familiar with mostof the wrestling superstars it produced, notably Hulk Hogan which manyconsider the icon of pro- wrestl ing. I was also mindful of the wrestlingmaneuvers and techniques that were used. Although I knew all this, it wasall common knowledge. Through personal experience, the people I know whoare fans of the sport only know this basic ideology of its premise. I feel that one major reason for the scarce information on pro-wrestling is due to the lack of media coverage. Wrestling is infamous forblurring the lines between dead on target sport and pure entertainment. Many majornews, magazines, and articles rarely cover the wrestling world because of