Structure Characterization of Silk Fibroin Crystalline Domain Polypeptides Expressed in Escherichia coli

The molecular conformations of four silk fibroin crystalline analogues [GAGAG-X] 16(G,Gly;A,Ala;X=Ala,Ser,Tyr or Val,designated eGA,eGS,eGY or eGV),carried out using molecular design and expressed by Escherichia coil(E.coli),were evaluated by Raman spectra analysis.The abilities of forming β-sheet structure were determined by thioflavin T(ThT) fluorescence spectra analysis.In terms of molecular conformation,except eGY that could not form significant typical molecular conformation,eGS and eGV were mainly com...     

论岩巷掘进的掏槽和光爆问题

结合岩石爆破破碎理论、对岩巷掘进中深孔光爆几个较为关键的技术问题,特别是掏槽爆破和光面爆破进行了较为细致地分析和研究,推荐了较为合理的掏槽形式和掏槽参数、光爆装药和光爆参数,提出了较为合理的起爆延迟间隔时间。     

一种对特殊多维0-1背包问题的约束简化方法

针对一类组合优化问题—多维 0 - 1背包问题 ( MKP) ,这是一个 NP-难问题 ,提出一种能减少求解难度的方法—约束化简方法。定义了 MKP的紧约束的概念。提出了一种代替多约束组的计算方法。对于经过替换后所得到的新问题 ,证明了与其原问题解精度上的等价性。     

Optimization Model of Incremental Loan Portfolio based on Risks Overlap of Incremental and Existing Portfolio

This paper establishes the non-linear functional relationship of risk overlap of incremental and existing portfolios. The decision-making model for incremental loan portfolio is based on how total loan portfolio optimization is built. The contributions and characteristics lie in three aspects. The first contribution is to put forward the scientific problem of controlling total portfolio risk based on risk overlapping of incremental and existing portfolios while putting out an incremental portfolio. The whole control of incremental and existing portfolios is the top issue, which not only exploits new idea about optimal allocation and control of financial assets but also alters traditional idea merely considering the risk of incremental portfolios. The second contribution is to establish the non-linear function relation of overlap between incremental and existing portfolios. Based on the theory of non-linear overlap of total portfolio, the function expression connecting total portfolio with incremental and existing portfolios is built. The third contribution is the controlling of total risk after overlapping between the existing and incremental portfolios risk. It solves the problem of how to control and optimize total portfolio risk while allocating an incremental portfolio.     

浅析企业的全面预算管理

介绍了企业的组织机构及各方的责任,提出了企业实施全面财务预算的编制依据、编制要求、编制程序,分析了企业财务预算的执行与控制、分析与考核,以及客观环境变化时对财务预算的调整.     

战术辅助决策系统中的态势评估问题研究

从感知、评价、决策的认知过程研究了现代军机战术辅助决策系统结构、组成和功能，并对态势评估和任务规划两个关键子系统进行了研究，提出了基于黑板知识库系统的态势评估实现结构。重点研究了基于贝叶斯网络和模糊逻辑技术的战场威胁评估算法，首先采用贝叶斯网络对威胁源的威胁级别进行评估，在此基础上，采用模糊逻辑对各威胁源的相对重要性程度进行综合评估。仿真结果表明了该评估算法的有效性，提高了决策的自动化和智能化程度。     

RAP掺量对半柔性路面路用性能的影响

为了探究再生沥青混合料(RAP)掺量对再生半柔性路面路用性能的影响,以体积法设计基体沥青混合料级配.通过浸水马歇尔试验、冻融劈裂实验、低温劈裂实验及车辙实验,分析评价不同RAP掺量再生半柔性路面路用性能.结果表明:RAP材料的变异特性、RAP掺量变化等因素使不同路用性能呈现不同变化趋势;当RAP掺量较低时,相关路用性能指标表现良好,当RAP掺量过高时,路用性能明显下降,且劈裂抗拉强度比不满足规范要求;RAP掺量对车辙深度、劈裂抗拉强度和残留稳定度影响较大.     

茸血停抑菌试验的研究

对茸血停的抑菌效果进行了研究,结果表明:茸血停的抑菌直径为（34.2±1.4）mm,抑菌直径大于其他几种药物,充分证实了茸血停良好的消炎止血效果.     

一个泛函在组合论中的应用

从实变元x的降阶乘的线性表示式出发，给出一个以多项式为定义域，实数为值域的泛函的定义，由此泛函推出三个性质以及在组合论中的两个推论．     

基于不确定性的研制技术风险度量研究

针对武器装备研发项目中技术风险的特点,分析了技术风险的表现形式,建立了评价技术风险的指标体系并阐述了各指标的具体含义.从技术风险的本质特性出发,分析技术风险的随机特性和模糊特性,得出技术风险因子是一个随机模糊变量.引入不确定理论中的三角模糊模型来量化技术风险的后果类信息,并提出建立三角模糊模型的准则.对技术风险的概率类信息采用平均加权算法,结合后果类信息用随机模糊变量的期望值算子量化技术风险因子.利用灰色关联度确定各概率指标的权重,把计算结果与技术风险度评价等级表进行比较得出可行的结论.最后通过传动系统的实例对以上方法进行了验证,结果与实际相吻合.