HIGH TECHNOLOGY,EMPLOYMENT AND THE CHALLENGES TO EDUCATION

The contribution of employment in high technology industry to future employment growth in the US economy is estimated to be small. Much high technology employment is not professional work at all, but routine labour, and much of that performed by minority groups with few career opportunities. Most new jobs will occur in occupations requiring no more than secondary education. High technology may generate employment in other areas, but often low grade work performed in the “homework economy”. Appropriate education for employment in high technology industry and in computer-related fields is not necessarily specialised and technical; high-quality general education is probably more important. Instrumental education, ignorant of the demands of high technology, and of the demands a modern economy makes upon high technology, is likely to be counter-productive. Commercial and technical success requires a combination of cultural learning and technical skill.     

三电压法测量硅钢片比铁损的误差分析

通过分析信号源稳定度、样品制备工艺、采样误差等因素对硅钢片比铁损测量精度的影响,编制了Matlab下的数据处理程序和相应的GUI用户界面。在该界面下针对上述几种条件下的测量结果进行数据处理,得到了最佳测量条件,简化了传统三电压法测量中复杂计算问题,使测量周期大大缩短。     

Growing where you are planted: Exogenous firms and the seeding of Silicon Valley

What are the respective roles of indigenous and exogenous factors in the development of high-tech regions? Entrepreneurs and their start-ups have dominated Silicon Valley's economy in recent decades, but a different dynamic was at work from 1940 to 1965, when the Valley emerged as a formidable high-tech region. In key industries (electronics, semiconductors, computers, and aerospace) that defined Silicon Valley as a high-tech cluster during that period, companies based elsewhere played critical roles in planting the organizations that would - through the innovations they made, the technical talent they attracted, and the start-ups they spun off - help make the Valley the world's most admired and emulated high-tech region.     

HIGH TECHNOLOGY POLICY AND THE SILICON VALLEY MODEL: AN AUSTRALIAN PERSPECTIVE

Australia seeks to emerge from the depths of recession and to break free from the syndrome of giving ever-increasing protection to a decaying manufacturing sector, by encouraging high technology industry. Silicon Valley, the home of much of the world's semiconductor industry, is often seen as the appropriate model for the development of such industry. For those used to dealing with the siting and encouragement of conventional industry, it can seem that high technology industry, with no heavy raw material input or bulky product output and requiring no large labour pool or local market, in fact has no special requirements at all. Others look to the Silicon Valley model and plan science or technology parks to reproduce the factors they believe responsible for that phenomenon. For example, great emphasis is generally placed on proximity to universities, apparently in ignorance of the very minor role universities played in the growth of the semiconductor industry, and of the great practical divide between science and technology. Vital factors, such as the ready information flow achieved by high mobility of those in high technology industry, are ignored. The Australian situation is complicated further by competition among the States to attract high technology industry, a competition that tends to emasculate national policy. Yet this situation is really just a local representation of what is happening internationally among countries and among regions within those countries. This desperation to leap blindly into high technology, whatever it is and whatever the cost, by following a model that is scarcely understood, is unlikely to produce the huge rewards so many policy makers anticipate are so readily available.     

Silicon＇s organic pool and biological cycle in moso bamboo community of Wuyishan Biosphere Reserve

Biomineralization of Si by plants into phytolith formation and precipitation of Si into clays during weathering are two important processes of silicon’s biogeochemical cycle. As a silicon-accumulating plant, the widely distributed and woody Phyllostachys heterocycla var. pubescens (moso bamboo) contributes to storing silicon by biomineralization and, thus, prevents eutrophication of nearby waterbodies through silicon’s erosion of soil particles. A study on the organic pool and biological cycle of silicon (Si) of the moso bamboo community was conducted in Wuyishan Biosphere Reserve, China. The results showed that: (1) the standing crop of the moso bamboo community was 13355.4 g/m², of which 53.61%, 45.82% and 0.56% are represented by the aboveground and belowground parts of moso bamboos, and the understory plants, respectively; (2) the annual net primary production of the community was 2887.1 g/(m²·a), among which the aboveground part, belowground part, litterfalls, and other fractions, accounted for 55.86%, 35.30%, 4.50% and 4.34%, respectively; (3) silicon concentration in stem, branch, leaf, base of stem, root, whip of bamboos, and other plants was 0.15%, 0.79%, 3.10%, 4.40%, 7.32%, 1.52% and 1.01%, respectively; (4) the total Si accumulated in the standing crop of moso bamboo community was 448.91 g/m², with 99.83% of Si of the total community stored in moso bamboo populations; (5) within moso bamboo community, the annual uptake, retention, and return of Si were 95.75, 68.43, 27.32 g/(m²·a), respectively; (6) the turnover time of Si, which is the time an average atom of Si remains in the soil before it is recycled into the trees or shrubs, was 16.4 years; (7) the enrichment ratio of Si in the moso bamboo community, which is the ratio of the mean concentration of nutrients in the net primary production to the mean concentration of nutrients in the biomass of a community, was 0.64; and lastly, (8) moso bamboo plants stored about 1.26×10¹⁰ kg of silicon in the organic pool made up by the moso bamboo forests in the subtropical area of China. Project (No. 30370275) supported by the National Natural Science Foundation of China     

基于单片机的脉冲电源控制系统设计

硅片的电火花线切割是一种新型的工艺方法,由于硅片的高电阻率特点,脉冲电源的参数与传统线切割设备有较大不同。通过采用MCS51系列的单片机,设计一种基于高压直流电源改进为脉冲电源的控制系统,应用到高速走丝线切割机床上来对工件进行试切,可以取得理想的切割效果。     

美国硅谷华人群体与中国国家软实力构建研究

美国硅谷是世界著名的高科技中心.经过半个多世纪的发展,如今这里汇聚了一万多家高科技公司和66万工程师,形成了一个高度发达的技术社会.在硅谷漫长的发展过程中,华人及华人群体功不可磨.他们展示出来的硬实力和软实力令人赞叹.本文以多元文化的视角比较详细的分析了硅谷华人群体软实力的现状、形态和特点,提出的一些建议和对策,这有利于我国在实施国家软实力战略中高度重视这一特殊群体的作用.     

解读美国硅谷地区高校的创新创业教育

创新创业教育是高校人才培养的重要组成部分,学习并借鉴国外的先进办学经验是推进高校教育发展的重要途径。结合出国研修的亲身体验,从办学理念、产学研机制、人才培养模式、创新创业成果转化机制以及教育环境等方面阐述美国硅谷地区高校创新创业教育的内涵。     

Silicon’s organic pool and biological cycle in moso bamboo community of Wuyishan Biosphere Reserve

INTRODUCTION Silicon (Si), the element in many plant biolo-gists’ minds, as we come into an age of research ‘insilico’, still is an enigma when it comes to its nutri-tional role in the higher land plants (Raven, 2003).The element occurs in the soil solution at 0.1~0.6mol/m3 as Si(OH)4 (two orders of magnitude higherthan the macronutrient phosphorus (H 2 PO ?4 /HPO 24? ))(Epstein, 1999). Although silicon is not an essentialelement for higher plants, it is an important nutrient for …     

开设科技特区 拓起中国金谷：关于在首都建立中国科技特区的战略思考

建立北京科技园区，应当从全国、全世界的高度作战略性的思考。要想使北京的科技园区超常发展，就要有超常的思路与超常的措施，就像当年建设深圳特区要有超常的思路与超常的措施一样，一个经济特区，一个科技特区，是推动我国经济发展的两翼，缺一不可，有了「它们，生产力关系的相互关系才能处于最佳的状态，我国经济才能不断地腾飞。