Zupersolar

   For many people, parents are not only their first two teachers but also the most important two teachers. In spite of that, I think we cannot say parents are the best teachers. The first reason is that the knowledge of our parents is limited. Maybe they can teach us elementary knowledge, such as simple language and basic math, but often it is not as accurate as that we learn in the school, and they cannot remember some knowledge. Because of several years of working, they have already forgotten a lot of knowledge which has little link with their jobs. For example, my father is a civil engineer, so what he mostly uses in his work is the knowledge about math and physics. When I ask him about chemistry problems, he usually says he does not know how to solve it as he has not used this kind of knowledge for many years. Secondly, children can get bad influence on their behaviors from their parents more or less. A teacher’s task is more than teaching us knowledge, but als...

In my high school, there were several serious rules against teenage smoking. The most severe punishment could discontinue the smoking students’ schooling. Nevertheless, it was common to see some boys smoking in our school toilets. Why did they still smoke as they already knew the harsh consequences and bad influence on their health from smoking? It was terrible for the country to have so many teenage smokers.      The first cause can be their curiosity. Teenagers are in the period of adolescence. It is a period when they want to know everything mysterious to them. Their teachers tell them smoking is a bad habit for health. Their parents tell them they should never smoke for so many times, which makes them bored. But the more they are prevented, the more interested they could be in smoking.  Curiosity lets them want to have a try. Once they have tried, the situation gets serious. Everything begins from the first time. After the first try, they would have th...

    My mother likes reading articles about health in newspapers. When I was in high school, one night my mother told me that I should never sit before a computer for a long time without going to a toilet. Because a research revealed that many young people had been found with prostatitis for they played computers the whole day but seldom went to toilets. I was amazed with the severe influence of computer addition on health. But that is only one consequence among the numbers of bad impacts.      Teenage computer addition is a big problem in China, especially in cities. You can find many teenagers in a net bar, some of whom even skip classes to enjoy themselves. Though we have laws to prevent children under 18 years old from entering the net bar, it is not carried out effectively in some places. Teenagers do not have work, so where to get money to let them continue staying in the bar is a problem. Sometimes this problem can lead them to stealing or...

It is a movie of heroes. It is a movie in which almost all the main characters were finding reasons to fight. The war was set up because of a woman. However, it was just an excuse for the ancient Greek King Agamemnon to invade Troy . Paris fought for the reason of his love for Helen. Prium fought for his responsibility for his son. Agamemnon fought for his own power and for the land. Archilles went to the battlefield for his own honor and the death of his cousin. From all the reasons, we can explore their attitudes to the meaning of their life. Among them, I admire Archilles most. Before the war, Achilles had already known the result of himself, which was to die. In spite of this, he still brought his sword with him to the battlefield. At the beginning, he did not want to be abused by the selfish king. He did not fight until his cousin was killed. He lost his life when he was still very young. The value of his life could not be judged by its length, but what he had done. We...

 What is the most important thing in a family, money or love? I think after watching “Rain Man”, most of us will say “love”. I remember a friend told me the word “family” had its meaning. The letters “F”, “A”, “M”, “I”, “L”, “Y” mean “Father and mother, I love you”. It is love that makes us get together. It is love that gives us the reason to sacrifice ourselves for our family members.   In the movie Charlie’s father left his 3 million dollars to a fund before he died, which made Charlie pretty angry. Then he found a man with the name “Raymond” had the right to control the money. He also found Raymond was autistic but his brother. Charlie decided to take Raymond on a long trip and get the money back. To his surprise, during the trip, he built love with Raymond and Raymond began to call Charlie “Rain Man”. On the day when Raymond should leave Charlie, Charlie felt very sad for he had known the meaning of brotherhood.  Through the trip, Charlie had changed a lot. He ...

The characteristic impedance of a lossless transmission line is Z = 50 ohm. The phasor voltage is  Vs(z) = 100e^-j20 pi z - 100 e^j20 pi z V 1) At z = 0, what is the phasor current? 2) What is the voltage reflection coefficient Gamma at z = 0?  3) If the transmission is terminated at z = 0 by a load resistor, what is the load resistance R_L?  4) What is the time average power delivered to the load resistor? 5) What are the instantaneous voltage V(z, t) and current I(z, t) of the line?

Two long transmission lines connected at z = 0, where the reflection coefficient is measured to be 0.5.  1) What is the transmission coefficient at z = 0 2) Draw the connection of two lines chosen by you to give the reflection coefficient of 0.5 3) If the incident power is 10 W, what are the reflected and transmitted powers? 4) What are the voltage and current amplitudes of the incident, reflected, and transmitted waves in the lines chosen by you? 5) What is Zin at z = - λ/4 of the lines you draw?

A load impedance of ZL =75+j 25Ω is to be matched to a Z0 =50Ω line by inserting a series connection of a lossless line of characteristic impedance Z1 and length L . Find 1) Z1 and L. 2) the magnitude of the voltage, |VL|, across the load if the amplitude of the voltage at the input terminal, |Vin|, of the matched line is 15 V.

Consider a 50 Ω transmission line of 3 quarter-wavelength (3λ/4) long. It is connected on its left to a 10 V (rms) source with 80 Ω internal impedance,  and connected on its right to an infinite 125 Ω line. 1) Compute the incident power, reflected power, and the power transmitted  into the infinite 125 Ω line. 2) Present methods to maximize the power transmitted into the infinite 125 Ω line (source cannot be changed).

In order to reduce the project duration, off-site construction methods were adopted in this project with pre-fabricated components to increase efficiency, schedule and quality.  There were 80+ patient bathroom and shower pre-fabricated units (PODs) in the south expansion of The Christ Hospital Joint and Spine Center. As the PODs were fabricated in the factory, it minimize the impact from weather, which was always a critical factor delaying project schedule, especially for outdoor installations during harsh weather conditions. The fabrication in factory made it easier for the workers to work around the PODs with all available tools and enough working spaces, which eased the production process. There were also benefits from the inspection and quality control that can be conducted in the factory to clear the defects in the early stage. There should be risk assessment implemented for a project. Risk in the areas such as safety, schedule, human resources, finance, etc., should be c...

The three key functions of a performance appraisal systems are administrative, informative, and motivational. Administrative For the administrative purposes, the appraisal system is used to make decisions on determining promotion candidates and transfers, identifying poor performance, deciding retention or termination and layoffs, validating selection criteria, meeting legal requirements, evaluating training programs, personnel planning, and reward or punishment decisions. One of the most important administrative purposes is providing legal defensibility for personnel decisions. Such decisions can be justified if they are based on performance appraisal and need to be documented for legal purposes (Monar Consulting, 2012) . One imperfection of using performance appraisal for administrative purposes is that organizations primarily focus on past performance rather than looking forward and setting goals and objectives which tie into the organizational strategy (Monar Consulti...

The training to the expatriate shall be conducted both before leaving the home country and after arrival in the host country. Both hard skills and soft skills training shall be conducted before the assignee leaving the home country. The hard skills are technical areas that are specific to the assignee’s job. The soft skills training for expatriates can be even more critical. The employee should learn at least the basics of the other country’s language. Expatriates should also be educated about their adopted country’s culture, both socially and professionally.   The expatriate’s family shall be included in some of the training. A large percentage of expatriate assignments are unsuccessful because the spouse is not used to the living style in the host country. They should have some education about exchange rates and the currency of the host country, food, proper dress and public holidays. They should be informed of the rules about how people should and should not behave the...

As business becomes increasingly global, many organizations will be faced with the need to send employees abroad, who are called expatriates (Veltkamp, 2015) . An expatriate is a highly skilled worker with unique expertise who leaves the home country and is sent to work in a foreign country or host country (Ghafoor et al., 2011). According to Dowling and Welch, the key factors to be considered and studied by the HR manager in expatriation selection assignment shall include, Cross Cultural Suitability, Family Requirements, Technical Ability, MNC Requirements, Language and Country/Cultural Requirements (Dowling & Welch, 2005) . Cross Cultural Suitability Cross Cultural Suitability is a vital ability that enables the expatriates to not only perform well in the work but also live smoothly in the new environment. This ability shall include cultural empathy, adaptability, diplomacy, language ability, positive attitude, emotional stability and maturity. The HR manager shall...

The frame in Figure 3 is subjected to a point load at the mid span of member BC. It has a hinge at C where the bending moment is zero. Analyse this frame by the moment distribution method and  draw the bending and shear force diagrams. You need not show the maximum value of the bending moment in the loaded span BC. EI can be assumed to be constant.  

The 2 span beam shown in the Figure below is subjected to the loads as shown. In addition the support B settles by 10mm. Analyse this structure by the method of moment distribution and draw the bending moment and shear force diagrams. E = 200x10 9 N/m2 and I = 50x10 6   mm 4 . . You neednot show the absolute maximum values of the bending moments in the spans. Note the differentvalues of the stiffness “EI” in the 2 spans.  

Analyse the 3 span beam shown in the Figure below by the method of moment distribution and draw the bending moment and shear force diagrams. You need not show the maximum values of the bending moments in the spans. EI can be assumed to be a constant across all the members.  

Determine the displacement at Point C of the simply supported beam shown in Figure. Consider EI is constant and use the virtual work method.

Use the method of virtual work and determine the vertical displacement of point A of the steel truss shown in Figure. Use, A = 450 mm 2 and E = 200 GPa