Friday, October 18, 2019

Final project Assignment Example | Topics and Well Written Essays - 1750 words

Final project - Assignment Example A proper analysis will provide an efficient project plan that provides well for, the work breakdown structure, methodology, work packages and the estimated time required to complete the project at hand. Risk plan for the whole project will also be designed and implemented for the foreseen risks that could hamper the successful delivery of the project. Unmitigated risks in the construction industry have cost significant loss of property and life. The financial loss can be in terms of delay and over expenditure. Some of the serious risks that must have a proper management plan include design changes, cost overrun, project process approval, safety and the conditions of the sites among others. The project will be divided into three major activities namely preparation, lifting and reinforcing the building. The preparation will involve the following activities i.e. plans and permits, assembly of machines, cleaning of the soil, temporal removal of ducts, removal of the floor, removal of the walls, installation of ducts system back, and supplying of heat to restore warmth. During these activities, the residents will not be required to vacate their houses but there will be temporal disruption of their normal services. This phase will take an estimated 27 days. The lifting phase will include the following activities, assembly of the machinery, removing of the porch, installation of the jacks, lifting of the building and finally, transfer of the soil to another place This phase will take an estimated 6 days to complete. The final phase will include activities such as additional excavation, foundation replacement, lowering of the building, framing, refitting of the furnace, and finishing. This phase will take 11 days to finish. Figure 2.0 shows the relationship between the activities projected to finish the project. The diagram also outlines the resources assigned to each activity and the flow in which the activities will be carried out.

Thursday, October 17, 2019

Midterm- assignment Example | Topics and Well Written Essays - 500 words

Midterm- - Assignment Example The promotions received are determined by various things, i.e. personal characteristics, appearance, job performance and intellectual capacity. Promotions to higher level need to maintain an impression on the superiors with intellectual capacity and this intellectual capacity can only be communicated through communication that is done through report writing. Reports exist because business needs information in order to function. Every member or employee who is enrolled into a business, for instance workers and staff employees, have some relevant information regarding his or her job that needs to be communicated. The nature and requirements at different levels in business is different. At lower organizational levels the need for information is relatively low. Work assignments at higher levels require more information. Information is required for business from different aspects. For example, the supervisor needs to keep a record of the data on the output and quality of the production. The supervisor also needs to record the information on the competition, new production techniques; new equipment etc. to be specific information is required by every person inany business. In order to find the relationship of this need in report writing, it can be said that the reports would provide systematic information that is needful for the business because a business must have information in order to function

Scenarios week 4 Essay Example | Topics and Well Written Essays - 1000 words

Scenarios week 4 - Essay Example The situation presented in the case of Glenbrook South High School is normal in most schools, where students with demonstrable capabilities end up failing their exams. After the results that Joanie gets, despite having spent time delivering the content as effective as she could, there is need to come up with a plan that can facilitate effective learning, application of the content and responding to questions in an exam situation. Firstly, in order to facilitate effective learning, Joanie can consider diversifying the teaching and learning style that she uses. One of these ways is to let students do the teaching. (Mwenda, 2012). For instance, a student can be assigned a single theme and allowed some time to carry an in-depth research then come and share the same with the rest of the class. In essence, learners grasp more what they have actively participated in than what has been imposed on them from the teacher. (Mwenda, 2012). Secondly, Joanie can consider engaging the class in group work through discussions and simulations. By doing this, learners will have an opportunity to bring out what they initially thought was right when it was wrong. (Mwenda, 2012). In addition to this, the levels of confidence will be built as the learners correct each other in addition to having the freedom to share what they could have dismissed as irrelevant ideas. Further to this, low achievers can have an opportunity to learn how their well performing colleagues manage to do it. (Mwenda, 2012). In order to have the learners improve in their performance in exams, there are a number of considerations that can be included in Joanie’s teaching plans. Firstly, since the questions that the students failed were to do with memory or remembrance, a catchy and memorable plan should be in place. For instance, apart from being given a chance to read the text on their own, the teacher can organize a video show or an acted presentation of the text in order to have the students remember

Wednesday, October 16, 2019

Final project Assignment Example | Topics and Well Written Essays - 1750 words

Final project - Assignment Example A proper analysis will provide an efficient project plan that provides well for, the work breakdown structure, methodology, work packages and the estimated time required to complete the project at hand. Risk plan for the whole project will also be designed and implemented for the foreseen risks that could hamper the successful delivery of the project. Unmitigated risks in the construction industry have cost significant loss of property and life. The financial loss can be in terms of delay and over expenditure. Some of the serious risks that must have a proper management plan include design changes, cost overrun, project process approval, safety and the conditions of the sites among others. The project will be divided into three major activities namely preparation, lifting and reinforcing the building. The preparation will involve the following activities i.e. plans and permits, assembly of machines, cleaning of the soil, temporal removal of ducts, removal of the floor, removal of the walls, installation of ducts system back, and supplying of heat to restore warmth. During these activities, the residents will not be required to vacate their houses but there will be temporal disruption of their normal services. This phase will take an estimated 27 days. The lifting phase will include the following activities, assembly of the machinery, removing of the porch, installation of the jacks, lifting of the building and finally, transfer of the soil to another place This phase will take an estimated 6 days to complete. The final phase will include activities such as additional excavation, foundation replacement, lowering of the building, framing, refitting of the furnace, and finishing. This phase will take 11 days to finish. Figure 2.0 shows the relationship between the activities projected to finish the project. The diagram also outlines the resources assigned to each activity and the flow in which the activities will be carried out.

Tuesday, October 15, 2019

Scenarios week 4 Essay Example | Topics and Well Written Essays - 1000 words

Scenarios week 4 - Essay Example The situation presented in the case of Glenbrook South High School is normal in most schools, where students with demonstrable capabilities end up failing their exams. After the results that Joanie gets, despite having spent time delivering the content as effective as she could, there is need to come up with a plan that can facilitate effective learning, application of the content and responding to questions in an exam situation. Firstly, in order to facilitate effective learning, Joanie can consider diversifying the teaching and learning style that she uses. One of these ways is to let students do the teaching. (Mwenda, 2012). For instance, a student can be assigned a single theme and allowed some time to carry an in-depth research then come and share the same with the rest of the class. In essence, learners grasp more what they have actively participated in than what has been imposed on them from the teacher. (Mwenda, 2012). Secondly, Joanie can consider engaging the class in group work through discussions and simulations. By doing this, learners will have an opportunity to bring out what they initially thought was right when it was wrong. (Mwenda, 2012). In addition to this, the levels of confidence will be built as the learners correct each other in addition to having the freedom to share what they could have dismissed as irrelevant ideas. Further to this, low achievers can have an opportunity to learn how their well performing colleagues manage to do it. (Mwenda, 2012). In order to have the learners improve in their performance in exams, there are a number of considerations that can be included in Joanie’s teaching plans. Firstly, since the questions that the students failed were to do with memory or remembrance, a catchy and memorable plan should be in place. For instance, apart from being given a chance to read the text on their own, the teacher can organize a video show or an acted presentation of the text in order to have the students remember

How to manage your time effectively Essay Example for Free

How to manage your time effectively Essay Ever come up short on schedule for something that should have been finished? On the off chance that you addressed yes, maybe you experienced difficulty dealing with your time legitimately. Time administration can show you how to take advantage of your time. Time management is one of the most important skills for university students. You should be very busy with your studies while, at the same time, balancing it with an on-campus social life. You have been admitted to the school of your choice, with hopes of meeting new friends and finding success in your classes. Getting into college is the easy part, but the hard part would be finishing it in one piece. College can be fun but at the same time frustrating, especially if your professors are being difficult or too strict. You may have thought some of these things when you first visited your university’s campus: †¢ I am overwhelmed. This is too much. †¢ The campus is so big, how will I ever find my way around? †¢ Okay, now I am a college student. Now, what happens? Surviving college is not just about how intelligent you are. It is not about how high you scored on standardized tests or admissions exams, and it is not entirely about classes and studying. People need to socialize; it’s part of their human nature. College does allow you to interact, but you must also study. It is important that you balance your time between studying and socializing. Some college students study themselves to the point of fatigue, but then some of them do not pass their classes due to stress. Other college students think of the university as one endless party. Some students do not appreciate the importance of socialization, and others do not value the importance of their education. You may be an intellect but it is not the only key to success in college. What is the secret to collegiate success? Time management is vital. College requires you to balance your life. You have to manage everything, such as class preparation, studying, campus organization activities, spending time with friends, eating healthy, exercising, and sleeping. Time management is not solely about studying, but also the attentiveness on relieving the stress of college life. Here are some ways that you can effectively manage your precious time: †¢ Learn to prioritize. Once you are focused on the goals you wish to achieve, you must prioritize the activities required to reach the goal. That will help you determine what particular task needs to be accomplished first and what tasks can be reserved for the future. To accomplish your goals more efficiently, try to mark deadlines on your calendar. †¢ Try to set goals. Know what you want to achieve and make those achievements your priority. That could be anything, whether you want to achieve the goal in a day, a week, a month, or a semester. Determine what your academic goal should be. Making goals could make it simpler for you to concentrate; instead of juggling subjects that you think are easy, it could be very stressful and often results in failing to achieve your goal. If you have more than one goal, it is wise to separate them into more manageable sections. Make a list of what you want to achieve for one week and for following weeks. †¢ Use extra time constructively. As an example, instead of doing nothing before class while waiting for the professor to arrive, try to think of the latest class assignment. If you are assigned to write an essay or research paper, use the time to think of a good topic for it. It is a fantastic way to portion your time into manageable pieces, and great time saver. It also allows you more time to spend time with your friends. When it comes to finishing tasks, sooner is always better than later. †¢ Time management planning is available for you to use to your advantage. Do not squander the resources and methods or available to you. The key to time management planning is carrying out the plans. Some college students get easily swayed by friends to attend a party while the student should be studying or otherwise in the process of achieving the established goals. Oftentimes, students think that they can put off the agenda until tomorrow. Doing so often results in too many things to do the next day, resulting in stress and frustration. You may have thought that each day is too short for you to finish all your work, and you may wish that there were more hours in a day. Those wishes are impossible. Therefore, the best course of action is to make use of what little time you do have.

Monday, October 14, 2019

The word perfume

The word perfume Introduction: History of Perfume The word perfume itself is derived from the Latin per fume, which means â€Å"through smoke†. Due to the fact that the original use of aromatic materials was of burning incense, as an offering to the gods.1 Aromatic materials have been used for a variety of different purposes over the past thousand years. Perfumes during this era largely consisted of uncharacterized aromatic compounds.2 Ancient Egyptians used such fragrant materials in many different forms. While it wasnt until the Crusades that perfumery became more knowledgeable, due to the increase in trade of spices which was a known ingredient in perfumes.1 However it wasnt until the 19th century when alchemy became more popular that perfumes began to evolve and change into its current state. The past 100 years has seen the rise of many perfumes that extensively use synthetic chemicals. The first example of the modern perfume was in 1882, Fougere Royale created by Paul Parquet, composed of many synthetic compounds.1 Throughout the next few decades major advancements in the structural characterization of aromatic compounds (with the use of gas chromatography and mass spectroscopy2) led to the creation of synthetic materials. Perfume industries of late use large amounts of synthetic ingredients in the perfume production compared to natural sources. Statistically out of 3000 fragrance ingredients, less than 5% come from natural sources.1 Section 1: Production of Perfume The components of perfume that provide the fragrance can be produced/extracted in 2 major ways. As mentioned above until 100 years ago perfumes used natural sources for use of fragrant chemicals, since then the compounds are synthesised artificially in laboratories. Methods of both production types are mentioned below. Natural Perfume Ingredients Natural sources vary from plants (lavender, jasmine etc.), fruits (lemon, orange etc.), and animals (musk from deers, ambergris from whales). The components that contribute to the smell of the above sources are produced using methods that fall into 3 basic techniques. Expression: simplest of the 3, only used for citrus oils, involves squeezing and compression of the material to obtain oil.3 Distillation: used in manufacture and extraction of essential oils in plants, steam is utilised to help release aromatic molecules from the material. The oils co-distil with the steam, causing the water to be separated (using a Florentine flask) and discarded from the oils. However in some cases the water can be distributed as â€Å"floral waters†, as they may contain certain fragrant qualities.1 Solvent Extraction: the most important and frequently used in modern perfumery. Typical solvents consist of combinations of petroleum ether, acetone, hexane and ethyl acetate and various others. This technique produces a concrete (resinoid) which can then either be distilled into an essential oil or extracted using ethanol to produce an absolute.1 However ethanol extraction cannot be used on plant materials as they contain water, which can be absorbed by ethanol. Therefore a new technique known as the ‘Superficial Fluid extraction is used where the solvent used is Supercritical CO2(carbon dioxide in its fluid state). This process is more successful in providing fragrant compounds with odour, that more closely resembles that of its raw material.3 On the other hand its is a very expensive process, due to the pressure and temperature required to keep CO2 in its liquid state.1 Synthetic Perfume Ingredients As organic chemistry began to develop, the fragrant chemicals involved in perfume began to gradually become synthetic. The first perfume to utilise new synthetic materials is known to be the popular Chanel No5 in 1921. It used aliphatic aldehydes for the first, which helped to create a rich jasmine ‘note for the perfume. One major reason that the perfume industry use synthetic compounds over the natural is because of its expense. It is much cheaper to produce the materials synthetically than extracting it by natural means. Structurally almost all fragrant molecules have stereocenters, any point in a molecule where interchanging of any two groups leads to a stereoisomer. 7 Due to this it becomes difficult to synthesise the particular isomer required for fragrance. In 1991 however a scientist known as Paquette synthesised a steroisomer of Ambrox, which is known to be an amber odorant.2 The isomer is (-)-9-epi-Ambrox. This was made possible due to the use of a method known as oxy-Cope rearrangement2 to isolate a single isomer. Process: The active species, the bicyclic ketone is treated with dihydrofuranyl lithium, producing 2. This product is then reacted with phenylselenyl chloride, producing the compound 3. The removal of the phenyl selenium group providing the double bond required, and then followed by alkylation with methyl iodide and LDA. Sodium borohydride (NaBH4) is then used to reduce the ketone molecule into an alcohol. Catalyst palladium utilised to reduce double bonds. This product is then dehydrolated to produce the desired (-)-9-epi-Ambrox.2 The above example of chemical rearrangement is one of the many process is used in the formation of synthetic fragrances. Determining the fragrant materials of perfumes requires analysis of its chemistry. This is done by the use of gas chromatography and mass spectroscopy. The use of analytical chemistry is also evident in the synthesis of perfume. These aromatic compounds that have either been extracted or synthesised are eventually formulated with other ingredients to produce the end product, Perfume. Formulation of Perfume Once the perfume oils are collected, they will be ready to be blended together. There may be as many as 800 different ingredients and take several years to formulate a special scent.5 Once the scent is created alcohol is mixed with it, this can dilute the scent of the perfume. Alcohols also evaporate quickly which allows the scent (top notes) to be released at a faster rate. The alcohol used in perfumery is ethanol and is odourless.5 Alcohols used in perfumes is usually denatured so that they are not marketed as alcohol rather than perfumes. This process is known as Blending. Section 2: ‘Notes on Perfume The term â€Å"notes† in perfumery means smell. The whole concept behind perfume is its fragrance. Notes are a descriptive form of the many layers of fragrances found in perfume. Perfumes usually consist of three notes: Top Notes: are responsible for the initial smell of perfumes. They normally consist of small, light molecules that evaporate quickly (with the help of alcohol), the most volatile compounds. Heart Notes: the smell that sets after the quick evaporation of the top notes. Forms the main aroma (hence known as ‘heart) of the perfume, has the ability to last several hours. Base Notes: expectantly the scent that appears after the exit of the heart notes. These are made of heavy, large compounds which evaporate the slowest. The long lasting scents of the base notes are very rich and deep, helping to sustain the effect of the perfume.6 Section 3: Physical aspects of Perfume The main physical aspect of perfume is its colour. Perfumes that have colours are found to be more attractive to the buyer. However not all perfumes are coloured, this is because manufacturers add compounds, compounds that reflect certain colours in light, into the perfume. For example: Section 4: Allergies caused by Perfumes Breathing problems, asthma and contact dermatitis (an itchy and inflamed skin rash) are typical reactions to fragrances. These irritations are known to be caused by the various mixes of chemicals in the perfume. Examples of the many allergenic fragrances include chemicals such as amylcinnamic alcohol, anisyl alcohol, benzyl alcohol, benzyl salicylate, even natural products such as clove oil, nutmeg oil, odor of rose and cinnamon oil. These can result in rashes or swelling on surfaces of hands, arms and face.9 The addition of alcohol in perfumes only increases the allergies/irritation to the skin. To prevent alcohol allergies it is possible to manufacture perfumes with perfume oils4 instead. Perfume oils other than preventing alcohol allergies can be less expensive to produce and in terms of fragrances allows the scent to last longer. To make perfume oil, carrier oil is required to substitute the alcohol and the water. Jojoba is an example of carrier oil, as it has a very long shelf life, no scent of its own and it is not greasy.4 Conclusive Summary: As the above discussion suggests, the manufacturing process of perfumes uses a vast array of chemistry. Organic and analytical chemistry being the most important fields involved in the chemistry of perfumes. With more research and understanding of the mechanisms involved in the mixture of the components. It can be possible to have perfumes with ingredients that are less volatile in the future.