Friday, March 13, 2020

Understand Fiberglass Boat Delamination

Understand Fiberglass Boat Delamination In the early days of fiberglass boat construction the durability and strength of the material was underestimated. Builders formed thick hulls with integrated tubular ribs and stringers. Since this was the time before computer aided design tools, builders in the North Western United States built using the old default method of more is better. In 1956, when the first fiberglass boat was built, the material was very new but already found acceptance in aviation and automotive industries. The only way to build at that time used layers of fiberglass impregnated with acrylic resin that hardened when cured. Large molds allowed entire hulls to be made as one piece with no seams. Some wooden structure was added inside the hull for rigidity and it was bonded in with more fiberglass material. No precautions were taken to compress the curing hull or eliminate air bubbles in the structure as is done today. We know this method as solid core construction. Fiberglass materials remained expensive, and as demand for these new boats increased, manufactures began cutting costs to compete in the marketplace. Soon a layer of wood was added to lighten and strengthen the hulls and decks. The fiberglass and wood sandwich was a great combination until one of the outer surfaces of the fiberglass was breached. This is called wood core construction. It didn’t take a crash on the rocks to let water into the wood layer. Small cracks allowed the wood to become soaked and it swelled, and then rotted. Soon the inner and outer fiberglass layers couldn’t do their job and broke down from repeated flexing. This was the first type of fiberglass delamination and the failures damaged the boat building industry badly since many manufacturers had transitioned to all fiberglass construction, leaving more traditional materials behind. Fiberglass construction was quickly becoming known as poor quality because of delamination issues. Two Types of Delamination   The first type of delamination, where a wood core either separates or disintegrates, is very difficult to repair. One of the fiberglass surfaces needs to be removed to access the core. It’s usually the inner skin that’s removed because it’s less visible so finish quality is not as important.   The process is expensive and requires skilled labor; many boats were scrapped because of the cost of repair. Even with today’s modern materials and processes this kind of repair is difficult. Another type of delamination is similar but without the wooden layer. In these cases tiny flaws in the fiberglass itself allow air to be trapped. If the hull is cared for badly, water can enter through microscopic channels and enter these voids filled with air. Expansion and contraction of these tiny bits of water will make the voids grow horizontally along the layers of fiberglass cloth and resin binder. Temperature fluctuation causes the expansion and contraction of the water and if freezing and thawing are encountered the voids will grow quickly. Small bumps soon become visible in the smooth finish. These bumps are called blisters and it’s a serious condition. Blister Repair The only way to repair this damage is to remove the outer gel coat and underlying fiberglass material to access the damage. It is then filled with new resin and the gel coat is patched. It sounds easy, but unless you have considerable experience working with composites it’s easy to make the situation worse. If the boat is going to get a new coat of paint the problem of color matching isn’t an issue. Blending a patch into existing paint is an art form and lighter colors are much easier to match than bright or dark paints. Mechanical bonding is the larger issue since the new patch is only connected to the hull through adhesive properties. The same vibrations that formed tiny cracks will cause the boundary of the patch to loosen. Some blister repair involves drilling a few very small holes and injecting an epoxy compound. The blister is then compressed while the epoxy cures. This allows the patch to become a more integrated part of the hull. Causes of Blisters Marine growth can penetrate the gel coat and allow water into the structural area. Keeping a clean bottom and using an anti-fouling paint is the most important step. Abuse is another way tiny cracks form and allow the entry of water. Some boats are exposed to these conditions as a normal course of wear. Other boats are needlessly used in a careless way and this causes hull problems. Never allow someone to load heavy objects on the cabin top or jump onto the deck from the dock. Not only is it dangerous, but it can lead to delamination in these areas which will grow with further vibration from normal use. Poor storage practices like leaving water in the bilge can lead to severe delamination. Even in tropical climates the expansion and contraction of water trapped between layers of fiberglass can raise blisters. In climates which freeze and thaw often it’s possible a small blister can turn into a â€Å"pop† where the outer surface is torn away by the pressure of internal ice. Pops can be fixed with the same processes as a blister but the extent of the damage is unknown and the hull is permanently compromised. Sonic survey can reveal some of the damage but prevention is far easier.

Wednesday, February 26, 2020

Personality Approach Paper Research Example | Topics and Well Written Essays - 1000 words

Personality Approach - Research Paper Example Symptoms of schizophrenia as per the DSM IV include: delusions, hallucinations, disorganized speech, catatonic behavior and negative symptoms like affective flattening (DSM IV). Schizophrenia is a complex disorder. Patients suffering from schizophrenia lead chaotic lives, with little or no contact with reality. The biological approach The biological approach to psychology believes that behavior has some biological roots and part of human behavior is predetermined biologically. The supporters of biological approach claim that the functioning of a living organism can be explained and treated on basis of its biological structure and bio chemical composition (Weiten, 2007). Nature versus nurture has been an ancient debate among psychologists. The biological approach suggests that nature has a stronger role than nurture; which implies that behavior is determined by genes. With the decline of behaviorism, the belief that our environment can change us into anything is dying out and the biol ogical approach is meeting greater acceptance. The biological approach offers a threefold explanation of personality. First is the one by Eysenck, which maintains that individual differences in behavior of humans are based on physiological variations. Second explanation of personality as per the biological approach is that of temperaments. ... According to this view point, humans inherit behavioral traits from their ancestors and therefore react to situations like their ancestors did (Burger, 2008). Biological approach to schizophrenia Several twin and adoption studies have revealed genetic ties of schizophrenia. Twin studies are common in biopsychology since in case of twins who are not separated, the environment is usually the same, therefore any discrepancy among behavior of twins (especially monozygotic ones) can be attributed to genes (Burger, 2008). According to Gottesman (1991), cited in Myers (1992), adoption studies have confirmed a genetic link in schizophrenia. This is in accordance with Eysenck’s idea that the genetic makeup of humans actually determines the behavior. Etiology of schizophrenia other than ‘genetic’ includes hormonal imbalances in the brain and structural and biochemical abnormalities of brain. The Dopamine hypothesis has gained quite a lot of popularity in this regard. It pos its that schizophrenia is related to excess activity of neurotransmitter dopamine in the brain. According to Andreasen and colleagues (1994), patients with schizophrenia have larger Cerebrospinal Fluid volumes as compared to healthy persons. The same findings were also confirmed by Staal and colleagues (2000). Schizophrenia runs in families and can be inherited (Alloy & Jacobson, 1999). This is in line with the evolutionary theory of personality as discussed in the previous section. Treating schizophrenia: the biological approach The biological approach offers various ways of treating Schizophrenia. Each one is discussed as follows: Anti Psychotic Drugs The most common and basic treatment for schizophrenia is via anti psychotic drugs. These are medications from a psycho active group and

Monday, February 10, 2020

Asnwers questions ( Critical Thinking) Assignment - 1

Asnwers questions ( Critical Thinking) - Assignment Example The client to whom the treatment is being given to has a right to know the truth about her medication and the inability to treat the disease she has. However, the facts in the situation may tamper with the health of the patient. Thus, the nurse may hold back the truth as a way of encouraging the patient The patient chooses not to participate in further treatment determinations while the family differs. The sick client has the right to brand an option although the decision might oppose the nurse’s personal belief. However, the family decision is the best for the patient since she had been in a stable condition despite the cardiovascular attack. The primary option in such a case is the use of a tube that feeds the patient directly to the stomach or the intestine or the direct injection of food into the blood system. The best method if the patient has a working gastrointestinal tract is the use of the device. The option reduces the probability of infections and other complications. The patient should have a critical care nurse due to the problems she is experiencing. Similarly, the kind of decisions she is making requires a nurse who can monitor and thus have the knowledge of the best decisions to

Thursday, January 30, 2020

Feudalism and Manorialism Essay Example for Free

Feudalism and Manorialism Essay Feudalism and manorialism were very linked. They go together step by step in the Middle Ages. Feudalism concerned the rights, power, and lifestyle of the military elite: manorialism involved the service and obligations of the peasant classes. Word feudalism was invented in the 17 century by Montesquieu and popularized it in The Spirit of the Laws (1748). In the late eighteenth century people said that feudalism is the privileges of the aristocratic nobility, privileges that provoked the wrath of the bourgeoisie ((McKay, A History of Western Society 259). Later Karl Marx adopted it to other meaning. He thought that feudalism was precapitalistic society. Now people think that feudalism was social and political system held together by bonds of kingship, homage, and fealty and by grants of benefits lands or estates given by king, lay lord, or ecclesiastical officer (bishop or abbot) to another member of the nobility or to a knight. (McKay, A History of Western Society 270.) However it arent all meanings of feudalism. Bloch thought that it is a whole system of life centered on lordship. Feudalism was a military society. Men dominated in it. However women was not so significant. Feudalism had military society. Manorialism involved the service and obligation of the peasant classes. The economic power of the warring class rested on landed estates, which were worked by peasants (McKay, A History of Western Society 261). Here we can say that feudalism and manorialism is connected to each other. Nothing in our world is made for nothing. People need something to return for their service. In manorialism was the same. Peasants needed protection, and lords asked them to surrender themselves and their lands to the lords jurisdiction. Peasants were ties to the land by various kinds of payments and service, despite of freedom of land. The peasant had to pay fee to marry someone from outside. They had to give percent of their crop to the lords. They also paid fine. Soon peasants became part of lords possession. Of course the transition from freedom to serfdom was slow and its speed was closely related to the political life in a given part of country. Hence feudalism and manorialism were inextricably linked.

Wednesday, January 22, 2020

Forensic Psychology Essay -- Papers

Forensic Psychology 1). Forensic Psychology is the application of the theories of psychology to law and the legal system. Issues of violence and its impact on individuals and/or groups delineate the main and central concerns in Forensics within the adult, juvenile, civil, and family domains. Forensic psychologists provide advice to legislators, judges, correctional officers, lawyers, and the police. They are called upon, for example, to serve as an expert witness, diagnose and treat incarcerated and probationed offenders, and screen and evaluate personnel in the law enforcement and judicial systems. Forensics encompasses a wide range of academic orientation. Synonyms for Forensic psychologists include criminal psychologist, correctional psychologists, police psychologists, and social-legal psychologists. However, Forensics is considered a single discipline. Just as one social psychologist may focus on group behavior while another may focus on interpersonal interaction, Forensic Psychology is best consi dered as a large all-encompassing field, for which correctional, police, and legal psychology are all sub-disciplines. 2). Erich Fromm defines benign aggression as a brief reaction to protect us from danger. In contrast, malignant aggression is hurting others purely for the sadistic pleasure. Fromm believes people feel helplessly compelled to conform to the rules of society, at work, and to authority everywhere. This lack of freedom to make decisions and the inability to find meaning and love in one's life causes resentment and sometimes malignant, sadistic aggression. How and where does this hostility show itself? Some people get pleasure from hurting, killing, and destroying; Hitler was a prime example: he killed 15 to 20... where fires are set in or around the home and result in attention from family, friends, and neighbors. The instrumental person's act is usually characterized by a desire to resolve interpersonal conflict by setting fire to a building in a retaliative way, external to the arsonist. This offence often involves prior threats to the victim plus a specific behavioral trigger just prior to the attack. The expressive arsonist's object of target is on very public buildings affording as much public attention as possible and thus increases psychological relief for the fire setter. Emotionally charged 'non-specific' triggers are common prior to the event. These offenders will often return to the scene and observe and participate in the response. The Instrumental object of the instrumental fire setter is generally a means of achieving some criminal goal such as theft.

Tuesday, January 14, 2020

Patton-Fuller Community Hospital Essay

Team C has identified that the Human Resources Department of Patton-Fuller Community Hospital has primary system deficiencies with the information security and lack of information. The records are currently open to all system users, exposing personal information to the Internet through the public website. The requirements for updating the Human Resources operating system have been identified using a specification checklist for updating software for the department including payroll and accounting. Team C has gathered the business requirements to understand the needs of the Human Resources department. The department currently operates on an Apple iMac with 2 gigahertz, 350-megabyte hard drive wireless with Mac OS X including Leopard and Windows XP. All patient files are encrypted for storage using AES. Advanced Encryption Standard is highly secure using 256-bit AES encryption for sensitive data. The Human Resource department also needs to have their sensitive data secure. The Human Resources department performs many functions including all of the accounting for the hospital. The hospital accounting and finance needs to operate using a secure and sophisticated software system. Updating the software to be able to perform accounting records is crucial to determine the financial soundness of Patton-Fuller Community Hospital. Patient accounts and billing must be secure and the software to be modified and updated should be too easy to learn and work with. Further research needs to be conducted if off-the-shelf software should be purchased or if the software should be modified or developed specifically for the department. Marketing communication is relatively designed to sell the value and benefits of the project to the stakeholders, which includes the healthcare providers, insurance companies, and pharmacies that are willing to invest in an organization working towards an accessible, affordable healthcare system such as the one that will be provided by Fuller-Patton Community Hospital. Team C has chosen to use branding as the source of marketing communication since it is indeed known to be the most sophisticated. The primary purpose of branding is to establish an identity that conjures up a positive image (Mochal, 2007). Our purpose in implementing this new software system is to assure the stockholders with this positive image, reflection and emotion  when a person hears of the new product. In order for Team C to make sure that the positive image is captured we will need to ask one another some important questions such as:Will this new system require a change in the way people perform their jobs and will this project make the business workers nervous as a result of efficiencies that will ultimately require less people to do the same function? As long as Team C holds a steady stream of positive communication amongst one another during the implementation of this project for the Human Resource Department then the project will be successful and should help overcome any negative perceptions one may have about the project. As a marketing research strategy Team C should implement a survey or questioner on how consumers in the local and surrounding areas gather information regarding hospitals and healthcare, as well as to what type of documentation the consumers are getting the information from such as the Internet, family, newspapers, friends, television, radio and possible hospital pamphlets or flyers. Once the information from the survey or questionnaire is gathered it should supply us with the insight of just how much the consumer’s friends and families have on the organization and patient satisfaction. This will guide Team C into the direction that they need in order to come up with the best image to fit the needs of Patton-Fuller Community Hospital. Team C can also set their marketing research plans toward is employee satisfaction and increase administrative efficiency by implementing Magic Service Desk for the Human Resources department. Magic Service Desk has the ability to track all employee requests while providing him or her with instant answers to policies and procedure questions. This will be an instant way that Team C can improve Patton-Fuller’s organizational efficiency by automating the Human Resources processes and empowering all employees to help them with access to the knowledge base and retrieve the available FAQ’s that they so desperately need. Mochal, T. (2007). Use branding techniques to build a positive image for your project. BNET Business Network. Retrieved on 12 Oct 2008 from:

Monday, January 6, 2020

Summary Of Kill A Mockingbird - 1406 Words

To Kill a Mockingbird: Crit 1, 3 4. Answer in full sentences and provide evidence from the text to support your answers. Evidence includes explanation and quotes. When you are quoting put the page number next to the quote. Eg ( p 28) Chapter 22: Although Atticus did not want his children in court, he defends Jem s right to know what has happened. Explain, in your own words, Atticus reasons for this. (Look at the speech beginning, â€Å"This is their home, sister†.) p 231. Atticus feels that in order to be a knowledgeable adult capable of channelling empathy and changing the world for the better, it is necessary not only to understand that inequality exists, but to see it firsthand, to understand the effects it has on a family. This is evidenced by a quote from Atticus â€Å"It’s just as much Maycomb county as missionary teas† (P231), an understanding that racism is prevalent, but Jem and Scout hadn’t seen the sharp consequence of actions taken by white people until the court case, something the children needed to see before their sense of morality was replaced by the racism surrounding Maycomb. I don t know [how they could convict Tom Robinson], but they did it. They ve done it before and they did it tonight and they ll do it again and when they do it seems that only children weep.-Atticus talking to Jem (p 232) Comment on this quote. What does Atticus mean? Atticus is discussing the unfairness of Maycomb, and American society in general. He is saying thatShow MoreRelatedSummary of To Kill a Mockingbird891 Words   |  4 PagesIn To Kill a Mockingbird many morals about the themes in the novel are portrayed through different issues and events. 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No matter, if they were between Christians and Muslims, Germans and Jews, or even the White and Black men, we have always been racially prejudiced as a whole people. A lot of countries’ government workers like to separate the minority just because of their skin color or the sound of their voice, especially, the white and black men in the United States. Many families are still not letting their daughters date a dark skin. Many cops areRead MoreSummary Of Kill A Mockingbird 2082 Words   |  9 Pages‘TO KILL A MOCKINGBIRD’ CHAPTER ONE: †¢ Maycomb is a poor, old and small town. Atticus Finch has a farm called Finch’s Landing that has supported their family for many years. †¢ Radley is a loner and because of the stories about Boo Radley †¢ The narrative voice and viewpoint are both from scouts point of view CHAPTER TWO †¢ Scout wants to go to school with Jem and she likes to read, that’s why she is looking forward to starting school. †¢ Jem is embarrassed of what Scout would do so he doesn’t want