software simulation

Currently experiments concerning the WSN are mostly carried out by software simulation, yet the inaccuracy of simulation may lead to a misrepresentation of the WSN performance. In the aim of understanding and analyzing WSN protocols and their major performance index, this thesis puts forward a WSN Platform Based on Data Collection, and presents a self-organizing network of multi-node tree structure, as well as a compatible network monitoring system.The thesis analyzes in detail the WSN architecture, including network topology, hardware structure of nodes and the network protocol stack. Several typical MAC protocols, routing protocols and the time synchronization mechanisms-one of the supporting technologies of WSNs-are also discussed in the thesis.In this thesis, a brief introduction of sensor circuit design is firstly presented. Based on the ATmega128L and CC2420 platform, the detailed design of time synchronization protocol, the MAC protocol and the routing protocol are then described.

Personal responsibility and social environment

The concept of responsibility is a necessary fiction. Although socities must hold their individuals accountable for their own actions, people’s behavior is largely determined by forces not of their own making.”
　　In the title statement, the speaker holds the contention that the concept of ‘individual responsibility’ is no existence but a fiction. Moreover, the speaker says that the behaviors of human beings are fundamentally determined by the environment which out of their control.A man＇s best friends are his Lacoste Polo Shirts. Admittedly, one’s actions are deeply influenced by laws, societies, schools and families and other exterior forces;Keep your cheap nike shoes close! individual responsibility exists and functions as a significant role to rule people’s behaviors as well.On one hand, the highest social animal as human being is, any individual has his specific role in a certain society. And this specific role gives one social identity and individual responsibility through education in schools and influence of ethical and moral standards. Though some times one would feel that the certain responsibility is obligation from the society and organizations rather than his ‘individual responsibility’ at first, in most cases, the accountability would presumably become one’s own eventually followed by the final identification of his specific social identity, and then direct one’s behaviors without the force from the exterior world. For example, a soldier would think it is his duty to obey the rules without any hesitation;Do you like those cheap men's nike shoes? a surgeon would consider healing the patients as his accountability; and a historian would feel it is his responsibility to discover what is behind the historical descriptions. In fact, different careers and roles form diverse individual responsibilities, which result in individuals’voluntary behaviors.
　　On the other hand, there are not only specific individual responsibilities in diverse areas but also some fundamental values and accountabilities, which we all human beings cherish. From the moment one can speak or even is born, the society begins to instill the moral and ethical standards, which is so called humanity in every one’s mind. The older one is, the deeper influence the humanity would be. When one is just a little child, he would go directly to what he like and claim it. Then when he is old enough, he would realize that it is incorrect and ashamed. And because of the awareness of what is right and wrong, one would probably never do any misdeed again. Actually, humanity is just the common individual responsibility shared by all of us.
flower
little girl
here and where
lunch is banana
computer

company

From 2007 to 2009: I established my own trade company , specializing in purchase various products for foreigner customer, which is mainly engaged in various girl ornaments, wigs, craft and other female articles. In this year, I invested one hundred thousand on B2C wholesale website, and ,successfully operated it .This is your favorit chi hair straightener!All products can be exchanged online.1. In 2008 year, I was in charge of export business and communicate with foreigner customers. When headquarter designed new products, I sought appropriate suppliers in accordance with the requirements of headquarter when the company had purchasing demands of other material and products, and guaranteed the purchasing orders to be completed smoothly.I think these ralph lauren polo shirts are the beginning of a beautiful friendship. During the period, I was such luckily to know some manufacturers that are of excellent goods source in Zhejiang province, mastered the quality standard of products, inspection and testing methods skillfully.2.I am familiar with the whole operating flow of foreign trade. Oh，Jerry，don＇t let＇s ask for the moon.We have the ralph lauren polo shirts. From the negotiation for purchasing orders to the final performance, I am easy to devote myself into the process to arrange samples for customer, keep close communication with workshop staffs, charter vessel, book cargo space, arrange delivery and the tracking after sales; I have been available for commercial negotiation for many times, thus I have gotten rich experience in negotiation.In 2008 year, After I smoothened my business with supplier and foreigner customers , I spent my energy on E-commerce , invested one hundred thousand on B2C wholesale website. The website have got one hundred thousand profit every years.The best sell record is two hundred and fifty orders one month.
poem
friend
fly bird
where are you?
your best friend

Clean Environment

As modern science and technology make increasingly faster and broader strides, man has also made an enormous stride toward modern civilization. However on the other hand, our environment has been contaminated by all kinds of pollution, especially industrial pollution. Everyone wants to get cheap Lacoste POLO Shirts.Man’s greed to lead a comfortable life without knowing the consequences has resulted in endless environmental disasters. First of all the air we breathe is always thick with fumes and smog. We feel we are almost smothering sometimes. If a person has long lived near factories that produce air pollution, he is very likely to contract lung cancer. Are there polo shirts you would like?Then comes water pollution. May people do not have good sanitary habits and they throw garbage at random. Hence we can see rubbish floating on the sea and rivers. Many people are deprived of the pleasure of fishing and swimming. There is a problem of rubbish, too. Some kinds of rubbish cannot be disposed of and they are piled up little by little, and our space of living is being taken up.Here is the best northface outlet! The fourth kind of pollution right beside us” something we may encounter every day. It is the cigarette. With the development of our economy, many people can afford this bad habit of smoking. And they become dangers to not only smokers themselves but the people around them. Pollution has been in existence for a long time, yet only of late have voices been raised against it, because the problem is growing more and more serious. Therefore, man has come to realize that those who produce pollution are, in fact, the victims of it and that it is time we took concrete steps to protect ourselves. Otherwise, we may end up with no pure water to drink, no clean air to breathe, and no safe place to live in. An erroneous but popular concept is that economic prosperity can be only achieved at the expense of a clean environment and public health. It is true that what is done cannot be undone. But we can still try our utmost to minimize the damage already done and meanwhile eliminate the causes of pollution. Both the former and the latter tasks rely on government action and every resident’s cooperation. We should emphasize the importance of prevention in particular. Repairing the damage already done only is like treating the symptoms but ignoring the sickness. In short, it is everyone’s right to live in a clean environment and it is everyone’s responsibility to leave a clean world for the generations to come. Only when everyone is aware of his right and faces his responsibility can we live in a clean environment.

sports
I like it
sports
where am i?
your best friend

Multimedia

Monitor the progress of projects to ensure timely,quality and cost effective for whole process of projects,help the suppliers to be better to our company,which in turn will result in higher quality product for customers.North face jackets are here for you!1,Assist to develop new and reliable suppliers through different channels which can produce required products with high quality and low cost.2,Evaluate first production samples(Plastic component,hardware,Label,and Package)and ensures that they conform to specifications,have a strength engineering background.Where can I get nike running shoes?3,Work together with supplier on areas that need improvement to ensure increase in delivery effectiveness,and provide full technology and quality support to suppliers.4,Make the first audit for new supplier effectively and perform periodic supplier visit5, Daily communicate with Sale Department in HK, receive the Forecast or PO;6, Coordinate with Manufacture Department, make out the product schedule and shipment schedule;How much do these cheap straighteners cost?7, Make out the material request according to inventory and forecast;8, Place and follow Purchase Order;9, Daily communication with suppliers, decrease the materials inventory holding, decrease the operate risk;10, To make out schedule for reducing materials cost 5% per season;11, Material management of ERP(R/3);12, Application and confirmation of material payment；
software life
friendsinmyheart
friend
software life
software life

our attitude

I have always cherished a saying, "We must believe what we have north face jackets now, in favorable or adverse circumstances, is the best arrangement for us." As it is the best, why shouldn't we treasure it? Maybe our study is simple, mechanical, dull, tedious, even unbearable, but please look around and we will find some of the others are studying with enthusiasm and enjoying it. When we focus all our attention on our study just like others and try to perfect it, we will once again be full of ardor. Our understanding and cheap north face jackets will be resuscitated, and we will be able to savor the happiness in our study, which is sure to bring us the expected pride and satisfaction.This is also true of daily life. You must know that everything in your daily life is yours, but the key is how you treat it, and manipulate it. Each of us has such experiences: When we are in high mood, even a crow's croak is sweet, but when in trouble, we will find the song of a lark spyder jackets. I always remember a story about Repin, a famous Russian painter. One day he took a walk with his friend after a snow. His friend noticed a dirty spot by the road, obviously caused by a dog's urine, so he kicked some snow and mud over it. This made Repin very angry because he said he had always come to enjoy that little piece of beautiful amber color those days. In our life, when we are complaining about displeasure or dissatisfaction, we might as well think of the mark left by a dog's urination. Whether it was a "dirty spot", or a "piece of beautiful amber color", depends on our attitude.