Sustainable Drainage Systems and Piles Essay Example | Topics and Well Written Essays - 2000 words

Sustainable Drainage Systems and Piles - Essay Example Firstly it would be Infiltration trenches and the second will be Detention Basins. Infiltration trenches This is a system in which a trench is made and filled with artificial layers of granular material/aggregates which are clean and dry and then this is used in combination with geotextile. These granular materials have voids which are used to trap water and retain it for some time. Where as geotextile material prevents from clogging and durability. The Granular material should be 50 mm clear stones. Then the materials are layered in the manner shown below. There are some conditions for its construction. Almost of the trench is underground and hence its maintenance will be expensive. The trenches are constructed at least 1.5m above the maximum groundwater level and it should be at least 5 m away from the foundations or buildings lines. It is used in areas where the silt/clay content is not more than 40 %.It is made in areas with type A and Type B soils. It should not be constructed n ear septic tanks or water supply line and the areas near it should have good house keeping, if it is not done it will result into choking of the voids that retains waters. Then to improve the life and decrease the maintenance of the trenches it should be provided with Leaf screens, Vegetated filter strips or grass swales and similar devices such as grit separators, goss separator etc. Then these trenches are designed with an impervious drainage area to treatment facility area ratio of between 5:1 and 20:1. Therefore its is clear that the land take is very less and this option will be suitable where areas is less such as commercial areas. Where as the maintenance of the trenches are done by cleaning out leaves, debris and accumulated sediment caught in pretreatment devices, inlets and outlets annually or as needed. If this is not done on regular basis then the trenches will choke and then a complete overhaul needs to be done which is costly. Normally the trenches’ material is replaced in 5 years. Although the cost of construction is low but the maintenance cost is high and needs to be repeated. Then in this type of system when the water passes through the layers of the trenches the solid particles are filtered and the geotextile improves the process. Eventually the quality of the water is improved but the water does not provide microbiological purification. Concluding the merit of the system are that they require less space, the improve water quality, have less construction cost, reduce the runoff during rainy season and reduce the erosion that might occur by heavy rainfall and its runoff. Where as the demerits are that the maintenance of the system is high and repetitive, the system doesnot purify biologically. It cannot be made in areas where underground services are present. These systems are not used in high slope areas. It is ineffective in areas where soil is contaminated and polluted. It looks the worst when the system is choked as the water stays and do not drain. Detention Basins As the name indicates this system impound water in an excavated area or basin. Primarily this is used in areas where there is heavy rainfall and frequent flooding. These basins are used in reducing peak storm water discharges, controlling floods and preventing downstream channel scouring. There are two type of detention basins dry detention basin (storage is for specified short time) and the other is extended detention basin (used for retention for

Kettle Mountain Mining Company Case Study Example | Topics and Well Written Essays - 750 words

Kettle Mountain Mining Company - Case Study Example To be exact, as per the investment analysis, the railway project is estimated to cost (80,000,000 + 25,000,000 + 1,000,000) = 106,000,000. However, if the Federal Government accepts the company’s petition for subsidy, the share of the project cost to the Kettle mining company would be (106,000,000*0.5) = $ 53,000,000. The subsidy would help reduce the burden of the project for the company. Therefore, Dr. Rousseau should consider going public to raise the amount required for investment. Secondly, if, as is recommended, the Kettle mining Company decides to go public, the company’s capital structure must change to reflect the debt borrowed from the public through the issuance of an IPO. In that case, Dr. Rousseau, who seems to oppose the IPO option must make sacrifices and relinquish a portion of the company’s control to the new shareholders. The IPO is the best option since it provides a long-term source of funds, which is appropriate for investments such as railro ad development. It is also important to consider the fact that a loan from a bank has been negotiated at a cost of 11%. This source of finance will increase the company’s weighted cost of capital to 5.8%. Comparatively, the IPO option is better than the loan option for the reason that the loan restricts the company’s decision-making and must be called back on maturity, while the IPO can only be called back when the company goes under receivership (CMA Canada, n.d, p. 1-3). Third, currently, the company heavily relies on road and air transportation media. The cost of the road transportation during winter totals to $ 2 million and that of air transportation during the spring and summer totals to $ 3.5 million. If the project is undertaken, these costs will be avoided. In addition, the train is expected to provide transport and freight services to residents of Carlsbad and Whitehorse, which is expected to generate revenues.

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

Violence - Research Paper Example The result of this force is death, injury or psychological harm (Krug & WHO, 2002). This definition indicates the mental shape of the perpetrator of violence against the victim be it their own self or another person. The army personnel are exposed to traumatizing experiences during war time. This makes them develop violent tendencies. In 2009, the United States Army documented that the suicide rates in the army had risen fourth year in a row as of 2008 (Finkel, 2011). This was especially high in the marines and the army. The statistics paint a grim picture of the situation that the soldiers find themselves in. They are exposed to death, both of their friends, as well as of the enemy. This is bound to leave a mark on them. One that is difficult to eliminate. This thus causes them to commit suicide as a possible way of exorcising the emotions haunting them. For example, in 1990, the prevalence of spousal violence was at a rate of 19 for every 1000 military families. This further rose to 26 in every 1000 couples, in 1996, but fell to 13 in every 1000 couples in 2004 (Karmen, 2013). According to Karmen, the things may seem to be improving in the army, but these statistics point to a worrying trend as the civilian population has a considerably lower rate of 3 in every 1000 married couples. These figures according to Karmen may be even higher as these are only reflecting the legal spouses who live within the army bases. As for those living off-base, the figures are not collected well thus there is no comprehensive record taking. In 2011, the CDC reported that women sustained 2 million injuries from intimate partners. This means that as of that year, violence was affecting women in very high rates. According to the CDC, the total social costs from violence amounted to between 5 and 10 billion dollars. The victims of violence who were recovering lost about 8 million paid working days,

Different instructional models widely used around the globe Essay

Different instructional models widely used around the globe - Essay Example After that we analyzed a lesson plan. We critically studied the strategy upon its merits and demerits. Lastly, We reviewed the assigned article and tried to filter out the need of academic or aptitude tests and their unwanted burden on our teachers, parents and most of all our students. There are different educational philosophies having different focal ideas. Perennialism, Essentialism and Progressivism are being followed education programs all over the world. Let’s explore the ideas in a little more detail. Firstly, Perennialists focus on the introduction of the western civilization and its approach towards facts that do not change. Humans rationalize things and thus need intellectual growth. In all the study programs today, it is on the highest priority to nourish humans with information as well as aesthetic taste e.g. arts, music, books, natural constants and so forth. Robert Maynard way back in 1963 developed a program that later further developed by Mortimer Adler. Secon dly, Essentialists believe that there is a set of moral and ethical knowledge that should be common for any student. Therefore, conservative approach of essentialism advocates for moral, ethical and cultural values that an institution should teach. In addition to more orthodox learning of reading, writing and computing, teachers should teach about respect, discipline or emotional expression and control etc. Thirdly, Progressivism believes that focus should be on the subject, in this case a child, and not on the content or a teacher. All students are born with the same capabilities but with different interests. Hence the deliverance should be more experimental oriented rather instructional. A single problem may be rationalized differently depending on the surroundings, physical arrangement and cultural setup. A scientifically designed program is adopted so that students acquire first hand knowledge. According to John Dewey, a staunch advocate of progressive education system, citizens should experience liberty in the school rather submissive and totally dictatorial environment. In the early 19th century, in United States schools were only accessible to wealthy citizens only. Social activists realized that to establish a healthy and a progressive society, education should be available to all. As a result of untiring efforts, by the end of the 19th century, elementary level education was available to all American citizens. In some states it was even compulsory. In the 20th century, Americans showed grate improvement and number of students graduating from high schools surged up to 85 percent. In the 20th century, Americans experienced global issues with a unique political setup like World War II, Vietnam War, Cold War era left deep impact on American education system. Beside that, a number of historically important internal events like the Great Depression and the Civil Rights Movement left their effects on the education system too. Today, being the World’s most powerful country United States has completely new set of responsibility. Composition of its multi-ethnic population has introduced new subjects in its education system to adhere different social setup intact in future. Similarly teachers’ training programs have been introduced to avoid any unrest in the society. Like other social and cultural units, the event of 9/11 has impacted the education system also. Steps have been taken to eliminate any racial profiling in the schools. However, there are other issues also to deal with. For instance, drugs, street or domestic violence and its psychological effects, sex abuse, alcohol abuse and smoking issues. American educatio

Script for radio news report Essay Example | Topics and Well Written Essays - 250 words

Script for radio news report - Essay Example It is an all rounded topic that is touching on the current situation in Singapore’s social and political life. THOUSANDS OF SINGAPOREANS THRONGED THE STREETS TODAY IN CELEBRATION OF SINGAPORE’S FORTY-NINTH BIRTHDAY. THE EXCITEMENT IS ALMOST TANGIBLE AMONGST THE PEOPLE WITH A NUMBER OF PERFORMANCES SET FOR THESE CELEBRATIONS. DOZENS OF SINGAPORE CITIZENS HAVE TAKEN TIME AWAY FROM THEIR DAILY ROUTINE TO CELEBRATE THE COUNTRY’S INDEPENDENCE DAY. THEY HAVE CONVERGED IN THE STREETS AS A SHOW OF THEIR PRIDE IN THE STEPS TAKEN BY THE COUNTRY SINCE IT GAINED INDEPENDENCE. ALTHOUGH THEY ARE CONSIDERED TO BE THE LEAST POSITIVE PEOPLE, A MAJORITY OF THE SINGAPOREANS WE INTEEVIEWED ARE VERY PROUD OF THE STEPS THAT THIS COUNTRY HAS TAKEN SO FAR. SOME FEEL THAT THE GOVERNMENT HAS TAKEN ENOUGH STEPS IN ENSURING THAT THE PEOPLE RECEIVE THE BEST SERVICES FROM MOST PUBLIC OFFICES. WHILE A FEW SINGAPOREANS FEEL THAT THE GOVERNMENT IS YET TO ATTAIN ITS FULL POTENTIAL, MOST ARE HAPPY WITH THE STEPS TAKEN SO FAR. AT THE MOMENT, ALL THAT SINGAPOREANS ARE LOOKING FORWARD TO IS AN ULTIMATE BIRTHDAY FOR THE

Some aspect of distribution theory Article Example | Topics and Well Written Essays - 250 words

Some aspect of distribution theory - Article Example One of the books that I bought is titled, â€Å"The Accident†. This book is available in the Amazon UK and can also be accessed in other networks such as eBay and other online marketing Companies. The use of online modes of distributing goods and services has not only been used in books, but also in other products for instance: Currently one can order for a movie online; one of the main sources on distributing such products are online marketing channels such as Amazon uk, the eBay and others that are used in various parts of the world such as the OLX, which was recently introduced. My encounter with purchasing a book from the Amazon, was greatly successful, the process of purchase is quite simple as it involves filing in personal details such as the address i.e. place of delivery and the payment details. The delivery is made by the company to the client, making the process efficient in relation to time

The influence of presentation format on sentence processing Essay Example for Free

The influence of presentation format on sentence processing Essay This study investigates the effect of sentence presentation format for optimal processing and takes into account previous research on the way in which people/readers/parsers parse and comprehend sentences. The study included 29 native speakers of English, who were presented with a cohort of sentences each comprising a verb that could be transitive or intransitive but designed as Late Closure sentences to elicit transitive readings or Early Closure sentences to elicit intransitive readings. Results initially adhered to Late Closure in that Late Closure sentences were read faster than Early Closure sentences but further analysis proved that page presentation and line breaks had an impact on the Early and Late Closure sentences which impacted on the readers comprehension and thus posits that initial parsing is not based solely on syntactic rules but includes other factors such as punctuation, which in this case is represented by line break presentation. Introduction Language is complex and sentences in natural languages are usually highly ambiguous and can be interpreted in many ways, but despite this complexity sentence comprehension seems to be easily and quickly achieved. When reading a sentence the sounds (or letters) have to be grouped into words or morphemes and meaning needs to be retrieved for those words or morphemes, syntactic information must be sought, analysed and integrated into syntactic structure, and semantic interpretation also needs to be designated; this process is called parsing, and it is the way in which parsing is undertaken that is of particular interest to researchers. In other words how do people parse? Mitchell (1994:375) tells us that although a great deal of research questions on the issue of sentence interpretation have been derived from an assortment of conceptual classifications, the chief inspiration has been Chomsky’s generative linguistics and his use of tree diagrams and phrase structure rules, which provide a basis from where to determine the different roles of people and objects within the sentence. The main problem however, â€Å"is to determine how people convert a string of words into something like a tree diagram to represent the structure of the sentence† (Mitchell, 1994:376). Do they make an immediate guess about where the current word goes, even if it turns out to be wrong or do they wait until they know for sure before they decide on the syntactic structure of the whole sentence? Parker and Riley (2005:252) tell us that much â€Å"of the research in language processing has been concerned with how people resolve syntactic ambiguity† and that ambiguity can be observed in a ‘garden path sentence,† wherein the sentence appears to have one structure but later it turns out to have another. As in the Garden Path Model adopted by Frazier (1987), many researchers suggest or take for granted that when confronted with structural ambiguity readers cope by following one analysis or interpretation. Frazier (1987) also adopted the core principles – Minimal Attachment and Right Attachment from Frazier and Fodor’s (1978, 1980) Sausage Machine approach to explaining parsing preferences. Frazier (1987:9-10), however, reformulated these principles, wherein Minimal Attachment accounts for the strategy used when putting new words into syntactic trees by using as simple a syntactic structure as possible, and Late Closure strategy replaces Right Attachment and accounts for continually adding new words to a syntactic constituent instead of locating another place for them if they are grammatically acceptable, while prolonging the closure of that syntactic constituent (clause or phrase). Thus, as in Frazier and Fodor’s Sausage Machine, Minimal Attachment makes sure the parser establishes the most straightforward structure in the first analysis of ambiguous sentences and Late Closure certifies that new elements are directly fixed to preceding data, thereby curtailing the likelihood of excessive workloads on memory. It is the fact that the Garden Path Theory (Frazier, 1987) regards syntactic processing as modular – automatic and based purely on the basis of structural information that has been the most controversial issue for researchers. Other researchers provide evidence that other factors such as referential pragmatics (Crain and Steedman, 1985), lexical semantics and plausibility (Mitchell 1987), lexical preference (Holmes, 1987), lexical frequency and combinatory idiosyncrasy (MacDonald, Pearlmutter and Seidenberg, 1994), and prosody (Warren, 1996) have a quantifying outcome on sentence comprehension and determining sentence ambiguity. Clifton, Frazier, and Connine (1984) conducted a study wherein sentences containing only verbs that are optionally transitive (some where a transitive reading and others where an intransitive reading is preferred) were presented to subjects, stopping after the first word following the verb for them to make lexical choices. Results showed that subjects acted more quickly when the word following the verb complemented its preferred argument than when it did not; thus giving proof for Clifton, Frazier and Connine that lexical information is accessed and used very quickly. Holmes (1987), Kennedy et al. (1989) and Ferreira and Henderson (1990), all investigated the issue of another kind of ambiguity. They tried to account for ambiguity in sentences where the verb can take a direct object or a complement and found that different verbs possess lexical preferences and thus prefer different kinds of complements and an NP following a verb could be taken as a direct object which could lead to a Garden Path when the second verb is read, or as a subject of the complement. In 1987 Mitchell conducted a study, results of which he interpreted as support for two stages in processing – a syntactic structure is built on the basis of major category information only – in the first stage and then more lexical information is used in the second stage to eliminate any incorrect attachments. Mitchell’s (1987) experiment gained support from an imitative study undertaken by Stowe (1989), using the same subject-paced word-by-word reading and an eye-tracking technique but results appear to contradict Mitchell’s findings and suggest that lexical information is used in the initial stage of parsing. Thus we find that research undertaken to determine how people parse is far from conclusive and there remains differing viewpoints as to whether other factors other than syntactic factors influence the comprehension of a text when parsing. This study sets out to investigate whether page format – presentation of sentences has any impact on time taken to parse and understand a sentence, in order to establish the best presentation for optimal processing, which would be relevant in advertising and education.