摘要：The paraventricular nucleus of the thalamus(PVT),which serves as a hub,receives dense projections from the medial prefrontal cortex(mPFC)and projects to the lateral division of central amygdala(CeL).The infralimbic(IL)cortex plays a crucial role in encoding and recalling fear extinction ***,we found that neurons in the PVT and IL were strongly activated during fear extinction *** PVT neurons inhibited extinction retrieval at recent time point(24 h after extinction),while activating them promoted extinction retrieval at remote time point(7 d after extinction),suggesting a critical role of the PVT in extinction *** the mPFC-PVT circuit,projections from IL rather than prelimbic cortex to the PVT were dominant,and disrupting the IL-PVT projection suppressed extinction ***,the axons of PVT neurons preferentially projected to the *** the PVT-CeL circuit also suppressed extinction ***,our findings reveal a new neural circuit for fear extinction retrieval outside the classical IL-amygdala circuit.

摘要：大豆是事关人民生活和经济社会发展的重要农产品之一,提高大豆生产水平和增加自给能力,是中国农业生产必须解决的重大问题。由于中国耕地资源不足的限制,科技创新是提升大豆生产能力的唯一出路。转基因育种是推动大豆生产发展的颠覆性技术,对美国、巴西和阿根廷等世界主产国大豆产业的发展发挥了重要作用。经过20多年的科技创新,中国转基因耐除草剂和抗虫育种技术已经成熟,这些产品的产业化种植可显著降低大豆生产成本和提升单产水平。基于中国转基因大豆技术发展进度和大豆生产的国情特点,我们提出了采用如下策略科学有序推进产业化工作。一是,在产品应用时间上,按照单一耐草甘膦除草剂、多个基因耐草甘膦和草铵膦等多种除草剂,以及耐除草剂与抗虫等复合性状等产品,依次推进相关种子的产业化;二是,在产品区域布局上,按照靶标杂草和害虫的地理分布特点顶层设计各种耐除草剂和抗虫大豆产品的种植区域;三是,在生物安全管理上,研发应用抗性杂草和害虫种群监测与治理技术,延长转基因产品的使用寿命。同时,还要加强野生大豆资源的保护工作,降低转基因大豆基因漂移对野生大豆生物多样性的影响。

摘要：为提高高压电源测试校准过程的效率,基于LabVIEW开发环境设计了一款集万用表34461A仪器控制和高压电源远程控制为一体的自动化测试软件。该软件以LabvVIEW仪器驱动作为基础,通过合理的软件编程将传统的人工逐点记录数据转变为计算机自动设置保存数据,大大节约了测试校准的时间,提高了高压电源的研发效率。

摘要：Mobile cloud computing （MCC） has become a promising technique to deal with computation- or data-intensive tasks. It overcomes the limited processing power, poor storage capacity, and short battery life of mobile devices. Providing continuous and on-demand services, MCC argues that the service must be available for users at anytime and anywhere. However, at present, the service availability of MCC is usually measured by some certain metrics of a real-world system, and the results do not have broad representation since different systems have different load levels, different deployments, and many other random factors. Meanwhile, for large-scale and complex types of services in MCC systems, simulation-based methods （such as Monte- Carlo simulation） may be costly and the traditional state-based methods always suffer from the problem of state-space explosion. In this paper, to overcome these shortcomings, fluid-flow approximation, a breakthrough to avoid state-space explosion, is adopted to analyze the service availability of MCC. Four critical metrics, including response time of service, minimum sensing time of devices, minimum number of nodes chosen, and action throughput, are def＇med to estimate the availability by solving a group of ordinary differential equations even before the MCC system is fully deployed. Experimental results show that our method costs less time in analyzing the service availability of MCC than the Markov- or simulation-based methods.

摘要：针对水下机械臂的末端轨迹跟踪控制问题,提出一种自适应快速反正切非奇异终端滑模控制器.首先,基于莫里森方程建立考虑水作用效应的水下机械臂动力学模型;其次,结合非奇异终端滑模控制和反正切函数特性,设计一种快速反正切非奇异终端滑模控制器,并基于径向基神经网络预测系统的未知扰动;然后,通过李雅普诺夫理论验证所提控制方法可在有限时间内收敛到期望位置;最后,通过仿真实验验证所提控制方法的有效性.

摘要：In consideration of the anti-HIV activities of delavirdine, resveratrol and Pidotimod, a novel kind of anti-AIDs drug（compounds 5 and 7） was synthesized. Compound 5 was synthesized by linking the delavirdine derivative to pidotimod, compound 7 was synthesized via linking the delavirdine derivative to resveratrol with terephthalic acid as the conjugated compound by two different routes. The structures were confirmed by means of IH NMR, 13C NMR, IR, MS and elemental analysis. The results for HIV-1 reverse transcriptase assay, quantitative titration of HIV-1 by using MAGI assay and pharmacokinetics assay show that a novel kind of anti-AIDs drug has been synthesized.

摘要：A substation system requires that communica-tion be transmitted reliably,accurately and in *** at solving problems,e.g.,flow confliction and sensi-tive data transmission,a model of the communication sys-tem of an agent-based automated substation is *** running principle is discussed in detail and each type of agent is discussed *** the end,the realization of the agent system applied to the substation is *** outcome shows that the communication system of an agent-based automated substation improves the accuracy and reliability of the data transfer and presents it in real-time.

摘要：介绍了基于 Web的机械状态监测与故障诊断系统的设计思想及其具备的主要功能 .

摘要：In this paper, we present a swarm intelligence design technology based on a workshop of meta-synthetic engineering, including the architecture, the decision-making process of swarm intelligence design based on a meta-synthetic workshop, and the design resource delivery technology involved in the design. We conclude the paper with a discussion of future research.

摘要：Since Ko Kung-chen published History of Chinese Journalism with Shanghai Commercial Press in 1927,this work had been published by different publishing houses and reprinted many times amounting to 18 *** are many historical narrative and fact errors of alien press in this work,and up to date these errors are not *** essay aims to revise the omitted errors of alien press in History of Chinese Journalism systematically besides those corrected by other works or essays,and carry on the statistical analysis of the errors to probe new approach for the study of alien periodicals and press in China.