Inclusion and Fairness Essay Example | Topics and Well Written Essays - 2000 words

Inclusion and Fairness - Essay Example der to understand the issues that arise in education, we must first look at what we mean by "Autism Spectrum." This definition is applied to a series of disorders classified by the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) as Communication Disorder Not Otherwise Specified (American Psychiatric Association, 1994, p. 65). Children with this disabilities have challenges with social development and communication. Many may not be able to interact with peers and have a variety of nonverbal behaviours (p. 66). According to the checklist for ASD, children have: According to the National Institute of Mental Health, the spectrum has different forms ranging from severe autism to Asperger Syndrome. The Autism Spectrum Disorders are usually detected between the ages of one and three, usually by parents. However, about 50% are not diagnosed until at least kindergarten. Most children with ASD have challenges in many areas. Socially they avoid eye contact and dont participate in the day to day human interaction with their parents or other siblings. They generally avoid physical contact. Many children with ASD dont talk in the first few years like other children. Some may start out making baby sounds but stop. Others may not develop language until much later in their development. Some can learn sign language or other ways of gesturing. Order and consistency of routine are very important. Some children may line up their toys in specific ways. If something is moved, the child becomes anxious (NIMH). Because of this, it is important with ASD children to have a strict routine--any deviation from this routine will be distressing for them. These are the many challenges that a child will have inside the classroom as well. According to Barnard, Prior and Potter (2000), inclusion means that all children must be able to have appropriate learning. They did several surveys to see whether this was happening for children in mainstream classrooms. In one of the

Quality Parts Case Analysis Essay Example | Topics and Well Written Essays - 750 words

Quality Parts Case Analysis - Essay Example The manager of Quality Parts Company is aiming to do precisely that by planning to appoint three inspectors to clean up the quality problem. She also contemplates adding a setting up a rework line to speed repairs. This is a disastrous idea that piles up the cost element of manufacturing. It also compromises on quality in the first place because when a new line for rework is added to the works the attention of the workers would be slanted more towards rework instead of a perfect first attempt manufacture. In forecasting demand, two methods can be applied- the push effect got as a result of demand forecast or the "pull" effect as Kanban exemplifies. The actual demand of the consumers is calibrated and production done accordingly. Kanban best suits a condition when the supply time is prolonged and the supposed demand is rather difficult to predict; the production then has to be done in response to the consumer's demand or 'pull'. Adoption of this methodology will cut down on the inventory costs because goods are procured as and when there is a pull by the consumer. The production facility becomes Just in time. The production process starts at the instance of a product being sent out of the factory. So, the process is upstream. Quality parts system makes basic errors in maintaining quality. ... The production process starts at the instance of a product being sent out of the factory. So, the process is upstream. Quality parts system makes basic errors in maintaining quality. As pointed earlier, the repair work or a separate rework line defeats the concept of quality management especially six sigma. In total quality management minimization of defects at the production stage is given more importance. The second most important thing is the manager's proposed idea of keeping "skids filled". This idea is in total contrast to the Just in time attainment of raw materials as professed in the kanban theory. (Chase-Jacobs-Aquilano, "Operations Management for Competitive Advantage, 2005, Operations_Management_Ch12.doc) Automatically ordering of inventory will not take into account the goods already manufactured, dispatched, in production and demand for future products. Getting and storing inventory will not only add to the cost of storage but defeats the logic of upstream production. High scrap rate: As evinced in the example, the scrap rate is nearly 10% that means 1 in 10 items produced are scrapped. This is an awesome waste considering the manpower and money involved. The high rise shelving inside the factory does not allow for grouping of similar tasks and interaction among teams of related work. The chain of uninterrupted production is disrupted and at times even broken. Grouping tasks: The bright thing to do incase of assembly line setup of manufacturing goods is to have people, procedures and equipments needed for similar tasks to be kept at proximity. It is a wonderful idea to do would be to place teams performing successive operation close to each other or near each other. This would reduce the physical

Types And History Of Heat Detectors Engineering Essay

Types And History Of Heat Detectors Engineering Essay Fire is one of the biggest threats people are facing in our society these days. Many methods are being used to prevent such danger on the citizens, such as making sure that every house has a fire extinguisher incase of fire starting in a persons house. These methods are improving by time and are getting more advanced and safer for the protection of people. Many changes were made to a fire alarm, yet the most recent and favorite ones are the fire detectors with all its types. However, to avoid danger most latest buildings provide each flat with a fire detector that can detect any hazard that will be caused by fire caused unintentionally. Fire alarms consist of many different types mainly smoke alarm detectors and heat detectors. We chose to build our own heat detector that detects any change in the temperature of the room. This experiment will include mainly a heat sensor and a temperature detector, and a buzzer that turns on when the temperature changes. The report includes a search on different types of fire alarms and their use. Types of fire alarms à ¢Ã¢â€š ¬Ã‚ ¦ It is definitely hard to get robbed and lose your belongings, yet a thief will leave your home where you live with your family and are considered your shelter. Fire will leave nothing except ashes of what was before a house. However, fire can be a very destructive force. Acting too late in the instance of a fire can not only entail the loss of your property, but of your life as well. This is the reason is why having a fire alarm in your home is necessary. Brief historyà ¢Ã¢â€š ¬Ã‚ ¦ The first automatic electric fire alarm was invented n 1890 by Francis Robbins Upton. In late 1930s the Swiss physicist Walter Jaeger tried to invent a sensor for poison gas. He expected that gas entering the sensor would bind to ionize air molecules and thereby alter an electric current in a circuit in the instrument. Francis Upton His device failed (small concentration of gas had no effect on the senors conductivity). When Jaeger lit a cigarette he was surprised to notice that a meter on eh instrument had registered a drop on current. Therefore, he discovered that smoke particles had done what poison gas could not do. Jaegers experiment was one of advances that paved the way for the modern day smoke detector. Smoke detectors started off with a generally high price that people couldnt afford, except for major businesses and theaters. The first affordable smoke detectors were invented by Duane D. Pearsall and Stanley Peterson in 1965, featuring individual battery powered units that could be easily installed and replaced. The first units for mass production came from the manufacturing mind of Stanley B. Peterson in 1975 at Duane Pearsalls company in Lakewood. These first units were made from strong fire resistant steel and shaped much like a bees hive. The battery was a rechargeable specialize unit created by gat es energy. We all know that fire alarms are designed to alert people to the possibility of a fire in their homes. Although any smoke alarm can be useful, it is often recommended that you choose a specific type of fire alarm for your home. This is because certain types of fire alarms can be more suited for certain places and for certain people. There are different types of fire alarms that people usually choose from to use in their houses for protection. Smoke detector 1) Smoke alarm detectors These are the most common types of fire alarms. Often, the term smoke alarm is used interchangeably with fire alarm. Smoke alarms actually detect smoke, not the actual fire. There are generally two types of smoke alarms: A) Photoelectric This type of fire alarm sees the smoke. This fire alarm is particularly responsive to smoldering fires or the type of fires that give out a lot of smoke. These are ideal for places where there are things like PVC (Polyvinyl chloride) or foam. This fire alarm, though, is slightly more expensive than ionization alarms. This fire alarm must also be kept clean since it can give off false alerts due to dust and insects. In one type of photoelectric device, smoke can block a light beam. In this case, the reduction in light reaching a photocell sets off the alarm. In the most common type of photoelectric unit, however, light is scattered by smoke particles onto a photocell, initiating an alarm. In this type of detector there is a T-shaped chamber with a light-emitting diode (LED) that shoots a beam of light across the horizontal bar of the T. A photocell, positioned at the bottom of the vertical base of the T, generates a current when it is exposed to light. Under smoke-free conditions, the light beam crosses the top of the T in an uninterrupted straight line, not striking the photocell positioned at a right angle below the beam. When smoke is present, the light is scattered by smoke particles, and some of the light is directed down the vertical part of the T to strike the photocell. When sufficient light hits the cell, the current triggers the alarm. Figure 1 -In this type of detector there is a figure 2- When sufficient light hits the cell, T-shaped chamber with a light-emitting the current triggers the alarm. Diode (LED) that shoots a beam of light across the horizontal bar of the T. B) Ionization This type of fire alarm detects the invisible particles caused by combustion. As opposed to the photoelectric fire alarm seeing the smoke, this type feels the smoke. This can best detect flaming fires with no visible smoke. However, you should not place this type of fire alarm in the kitchen as it is susceptible to false alarms. It is also cheaper than other types of fire alarms. Ionization detectors have an ionization chamber and a source of ionizing radiation. The ionization chamber consists of two plates separated by about a centimeter. The battery applies a voltage to the plates, charging one plate positive and the other plate negative. Alpha particles constantly released by the americium knock electrons off of the atoms in the air, ionizing the oxygen and nitrogen atoms in the chamber. The positively-charged oxygen and nitrogen atoms are attracted to the negative plate and the electrons are attracted to the positive plate, generating a small, continuous electric current. When smoke enters the ionization chamber, the smoke particles attach to the ions and neutralize them, so they do not reach the plate. The drop in current between the plates triggers the alarm. Which Method is better? Both ionization and photoelectric detectors are effective smoke sensors. Both types of smoke detectors must pass the same test to be certified as UL smoke detectors. Ionization detectors respond more quickly to flaming fires with smaller combustion particles; photoelectric detectors respond more quickly to flaming fires. In either type of detector, steam or high humidity can lead to condensation on the circuit board and sensor, causing the alarm to sound. Ionization detectors are less expensive than photoelectric detectors, but some users purposely disable them because they are more likely to sound an alarm from normal cooking due to their sensitivity to minute smoke particles. However, ionization detectors have a degree of built-in security not inherent to photoelectric detectors. When the battery starts to fail in an ionization detector, the ion current falls and the alarm sounds, warning that it is time to change the battery before the detector becomes ineffective. Back-up batteri es may be used for photoelectric detectors. Ionization chamber Heat detector Smoke alarms in homes can go off whenever theres smoke present. If a person smokes cigarettes, burns food or lights incense, a smoke alarm might go off. A heat detector, on the other hand, is indifferent to how much or what type of smoke is in the air. It will only react when it detects a change in heat, associating that heat change with the possibility of a fire in the area. 2) Heat alarm detectors- are devices that respond to changes in temperature of the surrounding area. If the ambient temperature rises above a predetermined threshold an alarm signal is triggered. In the case of sprinkle systems, water will be released to extinguish the fire. Heat detectors can also be further broken into two main classifications: Rate-of-rise heat detectors- ROR heat detectors react to the sudden change or rise in ambient temperature from a normal baseline condition. Any sudden temperature increase that matches the predetermined alarm criteria will cause an alarm. This type of heat detector can react to a lower threshold condition than would be possible if the threshold were fixed. A typical alarm may sound when the rate of the temperature rise exceeds the rate that was chosen as the normal safe rate of the temperature per minute. However, it detects fires that rapidly grow in intensity. This method responds to abnormally fast temperature increases. Fixed temperature heat detectors- this type of detector reacts when the ambient temperature reaches a fixed point. The most common fixed temperature point is 136.4 F (58C). Recent technological developments have enabled the perfection of detector that activate at a temperature of 117 F (47 C), providing increased time to escape. This method detects fires that build temperatures to a high level at a slow rate. This method responds to a specific temperature setting. A fixed head detector must be completely heated to alarm temperature and therefore a disastrous interval in time may occur with a fast rate fire. Which method is better? Heat detectors commonly have a label on them that says not a life safety device. That is because heat detectors are not meant to replace smoke detectors in the bedrooms or in the hallway outside of the bedrooms. A heat detector will nonetheless notify of a fire in a kitchen, where smoke detectors should not be installed. This will allow more time to evacuate the building or put out the fire if possible. Each type of heat detector has its advantages, and it cannot be said that one type is better than the other. If we placed a rate-of-rise heat detector above a large, closed oven, then every time the door is opened an alarm could be generated due to the sudden heat transient. In this situation the fixed threshold detector would probably be best. If a room filled with highly combustible materials is protected with a fixed heat detector then a fast-flaming fire could exceed the alarm threshold due to thermal interval. In that case the rate-of-rise heat detector may be preferred. The secret of the heat detection units sensitivity is in the design. The outer shell is made of a rapidly expanding alloy which closely follows changes in surrounding air temperature. The inner struts are made of a lower expanding alloy. Designed to resist thermal energy absorption and sealed inside the shell, the struts follow temperature changes more slowly. A slow rate fire will heat the shell and struts together. At the set point, the unit will trigger, actuating the alarm or releasing the extinguishment. A transient rush of warm air up to 40 °F /min. may expand the shell, but not enough to trigger the unit. By ignoring transient warm air excursions, the DETECT-A-FIRE unit virtually eliminates false alarms prevalent with rate-of-rise devices. If a fast rate fire starts, the shell will expand rapidly. The struts will close, actuating the alarm or releasing the agent. The faster the fire rate of growth, the sooner the DETECT-A-FIRE unit will react. Why Heat Detectors? No annoying beep when the battery is low Best loop capability Affordable compared to other detectors Immunity towards electromagnetic interference Resistive against contagion like UV and IR rays No necessity to change batteries Inherently secure and reliable

Women In The 17th, 18th, and 19th Centuries :: Expository Essays Research Papers

Women In The 17th, 18th, and 19th Centuries In the 17th century rich women would normally be taught at home by a tutor, they were taught subjects like Latin, French, Needlework, and how to converse, and they were also taught how to look pretty and to play instruments like the piano. When they were older there parents would decide who they were going to marry and the family of the women would pay a dowry to the parents of the husband. They only got married to get more popular and look more important, if the wives husband thought the wives got annoying the husband would put a scolds bridle on her head. If the husband wanted to get divorced the husband could just take the wife to market. A rich women wouldn't normally get a job, they would just stay at home and look after the family and tell the servants what to do. Poor women did not go to school or have an education, they just looked after their home, and span cotton or worked in fields. Poor women had to look after there children and prepare meals, work in the fields and produce cotton, they didn't get paid much and had to work hard. Women In The 19th Century In the 19th century rich women were educated at home by tutors and learned pretty much the same as in the 17th century, learn to play the piano, speak French, entertain quests, look attractive, and entertain guests. After 1870 it was made compulsory for all women to have an education, Girls didn't learn the same subjects as boys, they learnt subjects like laundry, cookery, needlework and housewifery skills. Rich women did work, but ran their home bossing their servants around, after 1870 some women became teachers and after the typewriter was invented some became secretaries or clerks. At this time all women had to retire when they were married. A rich women's servants did all a her domestic tasks at home. So all she needed to do at home was look good and attractive and boss servants about. School wasn't made compulsory until 1870 until then poor people didn't go to school because they couldn't afford it. Poor women had to work as well as bringing up her children, they had to work in coal mines and factories for long hours earning little money, up until 1870 young children would be expected to work too.

Green Computing Essay

Green computing or green IT, refers to environmentally sustainable computing or IT. It is â€Å"the study and practice of designing, manufacturing, using, and disposing of computers, servers, and associated subsystems—such as monitors, printers, storage devices, and networking and communications systems—efficiently and effectively with minimal or no impact on the environment. Green IT also strives to achieve economic viability and improved system performance and use, while abiding by our social and ethical responsibilities. Thus, green IT includes the dimensions of environmental sustainability, the economics of energy efficiency, and the total cost of ownership, which includes the cost of disposal and recycling is the study and practice of using computing resources efficiently. To comprehensively and effectively address the environmental impacts of computing/IT, we must adopt a holistic approach and make the entire IT lifecycle greener by addressing environmental sustainability along the following four complementary paths: †¢Green use — reducing the energy consumption of computers and other information systems as well as using them in an environmentally sound manner

Organic vs. industrial food Essay

Organic foods, although stereotypically known for having a bland taste or having no taste have been shown to improve one’s quality of life be decreasing some health risk such as cancer or heart disease. If you haven’t realized it, organic fruits and vegetables taste better, and the flavor is crispier. The health consequences of genetically modified food, when examined closely, will convince you to change your eating habits. The shelf life of food depends on four main factors: formulation, processing, packaging and storage. Change any one of these conditions and you can change the shelf life for better or worse. Shelf life has many attributes: bacterial control, color stability, yeast and mold inhibition, flavor stability, textural stability and aroma stability. The appearance of shelf-life problems can be wide, as well, including oxidative browning, oxidation of flavor compounds, or liquescence. To increase the shelf life of more unstable foods, such as low-sugar jam, low-salt condiments, low-oil salad dressings, prepared fresh produce and deli meats, food companies may take steps to reduce bacterial load from ingredients before they process the final food. To grow, thrive and survive, microbes need a friendly environment; this usually includes moisture. Lowering moisture creates a hostile environment for bacteria by decreasing the available medium for them to grow in. There are a number of new ingredients to help regulate water activity in foods with a reduced fat phase. â€Å" Generally, the water activity of a minimally processed food needs to be about 0. 07 or lower, water has an a W rating of 1. 00, and most products preserved with sugar, measure about 0. 07, with the excess water bound so that bacteria are under osmotic pressure too great to survive(Katz, February 4, 2006). † Whenever you buy food, you have decision to make: Healthy or cheap, organic or industrial. If organic food was not so expensive, that decision would be easy, everybody would buy organic food, for a healthier body. Unfortunately not everybody can afford it, making it look like healthy food is becoming a luxury good. In the rush to produce more and more food for the people on this planet, chemicals came into play. Farmers begin by trying to sell the highest percentage of their crop and therefore often use pesticides, gen-manipulated corn, chemicals etc. The farmer’s investment in pesticides, hormones, and chemicals tends to pays off, earning more, their fruits look better and costumers are happy with huge pest fee fruits and vegetables. When a farmer says no to chemicals, he runs the risk of losing a harvest because of pests. The only way to compensate the cost is a higher price for organic food. You can’t ask everybody to pay higher prices, and a lot of people would starve to death without the use of chemicals which protect harvests against pests. Every time you eat something, you consume pesticides, these substances are added in order to produce and sell more efficient. Fortunately there are strict rules for the use of chemicals. Organic foods are produced following practices described in the USDA National Organic Program (NOP), a marketing program with a certification process throughout the production and manufacturing chain. The NOP describes the practices that are required for labeling a product â€Å"organic,† but it does not address nutritional benefits or food safety issues. Even when you buy organic food, you are consuming these substances, but the bar is set at a different height and you are consuming less harmful substances that could be particularly hazards for high-risk groups such as pregnant women, infants, young children and farm worker households. Since organic food is not prepared using chemical fertilizers and pesticides, it does not contain any traces of these strong chemicals and might not affect the human body. People strongly believe that organic food tastes better than non-organic food. The prominent reason for this belief is that it is produced using organic means of production. Further organic food is often sold locally resulting in availability of fresh produce in the market. So how bad is industrial food? Let’s take a look; there are maximum residue limits on all pesticides and chemicals. The department of health determines how much of each substance is ok. Eating organic food lowers the risk of getting hit by a similar scenario, but it’s not a 100% guarantee (Are Organic Foods Better for You. 2010). However, getting seriously sick from cheap food is not that high of a risk as long as you read food labels you can eat cheap and healthy at the same time? If you are eating organic food only, you are still eating unhealthy foods. Almost everyone is aware that foods grown according to organic principles are free from over exposure to harmful pesticides, but that is only one small aspect. A larger part of organic agriculture is the health of the soil and the ecosystem in which crops are raised. Organic farmers know that healthy, live soils significantly benefit crops. Synthetic chemicals such as herbicides, pesticides, and/or fast acting inorganic fertilizers applied to or around crops interrupt or destroy the micro biotic activity in the soil. Organic farming reduces groundwater pollutants, decreases pesticides that can end up in your drinking glass; in some cities, pesticides in tap water have been measured at unsafe levels. The Farmer’s Market is a growers’ market, meaning everything in the market is homegrown, but Richard Bowie, an experienced organic grower is not convinced that all the food being sold is homegrown. â€Å"The market’s slogan ‘100% Homegrown makes us different’ is used as a gimmick, said Bowie† (Shreve, October 3, 2011). Vendors have been seen carrying produce and selling it to other vendors at the market bringing the term organically grown in to question and without certification, and but by law they cannot say they are a certified organically grown vendor. Most vendors cannot afford the certification process and want consumers to look past the term organic there for focus on the soil used or nutrients used. Almost everyone is aware that foods grown according to organic principles are free from over exposure to harmful pesticides, but that is only one small aspect. A larger part of organic agriculture is the health of the soil and the ecosystem in which crops are raised. Organic farmers know that healthy, live soils significantly benefit crops. Synthetic chemicals such as herbicides, pesticides, and/or fast acting inorganic fertilizers applied to or around crops interrupt or destroy the micro biotic activity in the soil. Organic farming reduces groundwater pollutants, decreases pesticides that can end up in your drinking glass; in some cities, pesticides in tap water have been measured at unsafe levels. We should choose farming methods that truly address our real concerns safety and sustainability, not simply methods that satisfy an arbitrary marketing label. To whatever extent these practices include methods that are permitted under organic rules. But there’s never a case when a safe, more efficient, and sustainable modern technology that feeds more people worldwide should be disallowed for no logical reason. Eating â€Å"organic† alone doesn’t guarantee 100 percent healthy . The truth is that most Americans eat so badly that we get most of our calories from soft drinks, more than we do from vegetables; the top food group by caloric intake is â€Å"sweets†; and one-third of nation’s adults are now obese. It’s not unimportant, but it’s not the primary issue in the way Americans eat. To eat well, says means avoiding â€Å"edible food-like substances† and sticking to real ingredients, increasingly from the plant kingdom. There’s plenty of evidence that both a person’s health as well as the environment’s will improve with a simple shift in eating habits away from animal products and highly processed foods to plant products and what might be called â€Å"real food. † From these changes, Americans would reduce the amount of land, water and chemicals used to produce the food we eat, as well as the incidence of lifestyle diseases linked to unhealthy diets and greenhouse gases from industrial meat production. And the food would not necessarily have to be organic, all it takes is paying attention to what you eat and read your labels more closely. Participation on our part to be more aware of what we buy and to raise our voices, if need be. We can let our opinions be known even in the simplest ways. A good example is when we shop, if there is no substitute for the product we need, let the store owners know, they will surely change their products. Organic food is better as it uses natural farming techniques. It is similar to preferring natural remedies when suffering from a disease as compared to eating chemical antibiotics. So, the question of organic foods vs non organic foods; which is better, is clearly answered. Organic food surpasses the conventionally produced foods. References Katz, F. (Febuary 4, 2006). Formulating for increased shelf life. Retrieved November 22, 2011, from http://www. foodprocessing. com/articles/2006/039. html Are Organic Foods Better For You?. Retrieved November 19, 2011, from http://preventdisease. com/home/tips61. shtml Shreve, S. (October 3, 2011). Does organically grown produce really matter?. Retrieved November 21, 2011, from.