Answering the paragraph Essay Example | Topics and Well Written Essays - 1500 words

Answering the paragraph - Essay Example Ceramics- Nowadays advanced ceramic materials are used for building to make turbine engines as they work more efficiently. Nowadays heat resistant ceramic tiles are used to protect during re – entry. Modern ceramics contain more components that before and are known as ceramic oxides.High temperature ceramics are also lately used in air craft making. â€Å"Engineered ceramics are increasingly being used in commercial and military aircraft, and have been used in the space shuttle and its equipment for many years†. Polymers – In modern aircrafts polymers are used to built airframe, window protection, interior trim, lightly stressed parts, and electrical insulators. The current invented polymer fibers are high in strength and can equal steel. New progression in polymer is the production of low cost polymers as polyethylene.. Composites – composites are an integral part of aircraft structure and there had been a great progression in this material within years. Composites like ceramic composites, polymer composites, carbon- fiber composites all have made the air craft develop vastly. Carbon fiber, aramid fiber is also common composites used for aircraft. Most of the airframe are made of composites and are highly cost – effective and durable. ... Since decades, aircraft technology has changed and the desire of humans for better quality and service has motivated the engineering world to find materials that are advanced. Now all the materials used for aircraft building have been progressed and many are less costing and have high durability. One of the advantages is that, new materials need less of maintenance and last for longer time. As the scientific world is improving the researchers want to make best use of nature and technology to satisfy customer needs and wants. Question 2. List 3 different nano materials and explain why they have become the major buzzword in Science over the last 20 years. Nanomaterials are things that are made with nano particles and are produced using nanotechnology. They are chemical substance which has increased strength, conductivity and light weight. Nano materials are new invention in engineering field and are highly demanded for their sophistication. The different nanomaterials are as follows. F ullerenes Fullerenes are carbon structures made with nanotechnology and have hollow cage like form. It has 60 atoms of carbon and is composed of pure carbon molecule. It has a shape of that of a soccer ball or a dome. It is a highly promising element in material science as it can be used for medical applications, fiber optics and super conductors. Fullerenes are similar to graphite in structure and can also come in spherical shapes. Carbon Nanotubes Carbon nanotube is another nanomaterial which is made of carbon and comes in tube shape. They have a diameter which measures on a nanometer scale. Carbon nanotubes come in many shapes and sizes with number of layers. They are formed from graphite

Edit and adjust accordingly Essay Example | Topics and Well Written Essays - 1000 words

Edit and adjust accordingly - Essay Example Agency source of power has to do with the power to make decisions on the use of the agency’s human and material resources. This includes the restructuring of the organization, changing staff schedules, unbundling of production process or entering into strategic partnership for the purpose of improving quality of goods and services and/or empowering clients. Closely related to agency source of power is legitimate power. This is the power one has by virtue of his position in an organization. Having legitimate powers means having authority or control over the behaviours and performances of others. The president of a company has legitimate power over all other employees of the company. He can give every other person orders and expect him/her to obey. Expert power is the power that even individuals at the lower levels of the organizational structure can acquire and accumulate. The possession of superior knowledge, ideas, skill, experience and abilities, and how these are used can earn one reputation and power. An employee with expert power is a master in his professional niche and he can use the power s/he accumulates to sway others into taken decisions that affect the overall functioning of the organization. Until my employment, the company I am working with was into hotel business. It nearly crumbled due to superior competition. The business was sustained with returns from the president’s plantation. The ‘management’ of the hotel was then lead by a president and had two-level organizational structure. No line managers. No board meetings. It was small. Every employee reported to the president. Two of the four senior employees were sons of the president. They were presidents-in-the-waiting. The business was on the verge of been mismanaged as family business if not for the president’s foresightedness. He knew his children were incapable of managing the inherited business. The hotel needed