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101.
王媛媛 《科学之友》2008,(8):154-154
文章论述了临猗县枣业发展的历程,通过总结经验、探寻原因和市场调查各方面的分析,认为枣业的发展大有前途。  相似文献   
102.
本文介绍了应用型高技能数控人才的培养目标,从加大设备投入、安装通用软件、保证学生实践时间、建立一支高水平师资队伍、加强校企合作这些方面着手,建立了一套较为完善的实训模式,以增强学生的编程、操作、软件应用等方面的能力。  相似文献   
103.
在关系契约框架下研究研发联盟的收益分配问题.结果表明,研发联盟一次性合作的收益分配方案应遵循绝对优势原则,即合作各方应能够得到与自身贡献相匹配的合理收益;而重复合作收益分配应遵循相对优势原则,即根据相对成本和相对效率确定收益分配率,应给予相对劣势成员比短期合作中更高的收益分配比例,虽然该比例仍低于相对优势成员.这些研究结论可用来修正研发联盟收益分配正式契约条款,有助于克服成员的背约冲动,维护研发联盟的长期稳定.  相似文献   
104.
Genomic alterations lead to cancer complexity and form a major hurdle for comprehensive understanding of the molecular mechanisms underlying oncogenesis. In this review, we describe recent advances in studying cancer-associated genes from a systems biology point of view. The integration of known cancer genes onto protein and signaling networks reveals the characteristics of cancer genes within networks. This approach shows that cancer genes often function as network hub proteins which are involved in many cellular processes and form focal nodes in information exchange between many signaling pathways. Literature mining allows constructing gene-gene networks, in which new cancer genes can be identified. The gene expression profiles of cancer cells are used for reconstructing gene regulatory networks. By doing so, genes which are involved in the regulation of cancer progression can be picked up from these networks, after which their functions can be further confirmed in the laboratory.  相似文献   
105.
In this experiment, using the methods of drought-stress in the pot and PEG simulative drought-stress, three native rocky-slope grasses Pogonatherum panideum(Lam.) Hack, Erioophorum comosum nees and Cynodon dactylon cultivated in the pots were selected as materials to study their drought-resistance by analyzing the indexes such as the leaf area index, the drying roots accumulation, the holding water ability of leaf, the relative conductance of leaf, the soluble protein, chlorophyll. At the same time, by comparing with membership function value of each index, the order of each grass drought-resistance was decided. The results showed that the drought-resistance of Erioophorum comosum nees was stronger than Cynodon dactylon and drought-resistance of Cynodon dactylon was stronger than Pogonatherum panideum (Lam.) Hack. The purpose of the experimental results was to find theoretical foundations for selecting and cultivating native protecting-slope vegetations to adapt to rocky slopes.  相似文献   
106.
The consistency measurement and weight estimation approach of the hybrid uncertain comparison matrix in the analytic hierarchy process (AHP) are studied. First, the decision-making satisfaction membership function is defined based on the decision making's allowable error. Then, the weight model based on the maximal satisfactory consistency idea is suggested, and the consistency index is put forward. Moreover, the weight distributing value model is developed to solve the decision making misleading problem since the multioptimization solutions in the former model. Finally, the weights are ranked based on the possibility degree approach to obtain the ultimate order.  相似文献   
107.
μC/OS-Ⅱ is an open source real-time kernel adopting priority preemptive schedule strategy. Aiming at the problem of μC/OS-Ⅱ failing to support homology priority tasks scheduling, an approach for solution is proposed. The basic idea is adding round-robin scheduling strategy in its original scheduler in order to schedule homology priority tasks through time slice roundrobin. Implementation approach is given in detail. Firstly, the Task Control Block (TCB) is extended. And then, a new priority index table is created, in which each index pointer points to a set of homology priority tasks. Eventually, on the basis of reconstructing μC/OS-Ⅱ real-time kernel, task scheduling module is rewritten. Otherwise, schedulability of homology task supported by modified kernel had been analyzed, and deadline formula of created homology tasks is given. By theoretical analysis and experiment verification, the modified kernel can support homology priority tasks scheduling, meanwhile, it also remains preemptive property of original μC/OS-Ⅱ.  相似文献   
108.
游庆春  王湘敏  喻红波 《科技信息》2007,(33):227-227,256
本文在对单亲家庭子女的性格作客观分析的基础上,探讨了学校教育管理中如何引导单亲家庭子女健康成长的问题。主要提出了学生管理中的五大沟通策略。  相似文献   
109.
110.
Public spending is a major policy tool for the government to adjust the macro economic progress. This paper characterizes the effects of shocks in government spending and taxes on Chinese economy growth since 1978. It does so by using a mixed structural VAR (SVAR) approach. Identification is achieved by using institutional information about the tax and spending to identify automatic and discretionary response, and by implication, to infer fiscal shocks. The results show positive government spending shocks as having a positive effect on output, and positive tax shocks as having a negative effects.  相似文献   
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