We develop an improved design of thin gap chamber (TGC) simulation signal source. To further simulate the feature of TGC detector, a novel thought is proposed. The TGC source has 256 channels. Every channel can rand...We develop an improved design of thin gap chamber (TGC) simulation signal source. To further simulate the feature of TGC detector, a novel thought is proposed. The TGC source has 256 channels. Every channel can randomly output the signal in 25 ns. The design is based on true random number generator (TRNG). Considering the electrical connection between the TGC source and the developing trigger electronics, the GFZ connector is used. The experimental results show that the improved TGC simulation signal source can uniformly output the random signal in every channel. The output noise is less than 3 mVrms.展开更多
本文利用2007年的CHIP(Chinese Household Income Project)数据,探究了不同费用来源的培训对农民工工资的影响效果。我们发现,企业通过支付"低于农民工实际劳动生产率(收益)的工资"从而变相地将培训成本转嫁给农民工,并且培...本文利用2007年的CHIP(Chinese Household Income Project)数据,探究了不同费用来源的培训对农民工工资的影响效果。我们发现,企业通过支付"低于农民工实际劳动生产率(收益)的工资"从而变相地将培训成本转嫁给农民工,并且培训本身带来的收益也更多地被企业通过这种方式拿走了。农民工从"企业内部培训"中"实际"获得的收益远远低于他们"应该"获得的收益。另外,政府应做的是"出钱买培训"而不是"出钱搞培训"。展开更多
基金Supported by the State Key Laboratory of Particle Detection and Electronicsthe National Natural Science Foundation of China under Grant No 11375179
文摘We develop an improved design of thin gap chamber (TGC) simulation signal source. To further simulate the feature of TGC detector, a novel thought is proposed. The TGC source has 256 channels. Every channel can randomly output the signal in 25 ns. The design is based on true random number generator (TRNG). Considering the electrical connection between the TGC source and the developing trigger electronics, the GFZ connector is used. The experimental results show that the improved TGC simulation signal source can uniformly output the random signal in every channel. The output noise is less than 3 mVrms.
文摘本文利用2007年的CHIP(Chinese Household Income Project)数据,探究了不同费用来源的培训对农民工工资的影响效果。我们发现,企业通过支付"低于农民工实际劳动生产率(收益)的工资"从而变相地将培训成本转嫁给农民工,并且培训本身带来的收益也更多地被企业通过这种方式拿走了。农民工从"企业内部培训"中"实际"获得的收益远远低于他们"应该"获得的收益。另外,政府应做的是"出钱买培训"而不是"出钱搞培训"。