军地物流联合发展的经济环境与市场条件分析

“入世”如何有效地实施军地物流联合发展战略、优化军地物流整体结构、提高物流效益越来越引起人们的普遍关注。这里就其发展环境与市场条件做一些简要分析。     

第三方物流发展的社会环境分析与对策

根据我国第三方物流发展的社会环境和市场条件，提出了当前影响和制约发展的主要问题，和加快发展的基本思路和对策，并对发展前景进行了展望。     

衡南县工业化的现状及对策分析

文章通过对衡南县工业化现状和存在的问题进行分析研究,提出了推进衡南县工业化进程的若干对策。     

黄河内蒙古河段凌汛期首封影响参数辨识和预报模型研究

黄河上游河道首封时间和地点准确预报是制定科学防凌预案的关键。本研究在总结黄河内蒙古河段首次封冻地点基础上,总结了首封河段同河道弯曲、束窄、桥梁及河心滩等河道特征的关系,定量总结了易发生首封河道的地形特征为：河段处弯曲系数大于1.5、束窄系数在0.25~0.60范围内,为首封地点分析预测提供依据。在总结首封日期影响因子特征基础上,分别基于随机森林和BP-DEMATEL模型构建首封日期分析模型,得到影响首封日期的主要因子权重,并应用到首封日期预报中。通过因子选择和模型比较两方面对比,随机森林模型选取出的关键因子得到的预报结果与实测值吻合率100%,其在首封分析中的应用效果最优。     

One foot in,one foot out: how does individuals' external search breadth affect innovation outcomes?

The “variance hypothesis” predicts that external search breadth leads to innovation outcomes, but people have limited attention for search and cultivating breadth consumes attention. How does individuals' search breadth affect innovation outcomes? How does individuals' allocation of attention affect the efficacy of search breadth? We matched survey data with complete patent records, to examine the search behaviors of elite boundary spanners at IBM. Surprisingly, individuals who allocated attention to people inside the firm were more innovative. Individuals with high external search breadth were more innovative only when they allocated more attention to those sources. Our research identifies limits to the “variance hypothesis” and reveals two successful approaches to innovation search: “cosmopolitans” who cultivate and attend to external people and “locals” who draw upon internal people. © 2014 The Authors. Strategic Management Journal published by John Wiley & Sons Ltd.     

基于ESG理念的新型电池储能综合价值测算及经济性评估

基于ESG（环境、社会、治理）理念,采用双指数学习曲线函数,模拟储能成本动态变化过程,根据动态全寿命周期成本和综合价值,构建新型电池储能经济性评估模型,依据江苏省新建储能电站相关数据,考量新型电池储能的综合价值,验证模型有效性。结果发现：当前新型电池储能电站建设成本高,价值回收难以补偿全寿命周期成本,制约新型电力系统发展。仿真结果表明：当储能成本降至2900元/kW时,新型电池储能能够达到投资边界值,经济上可实现大规模应用。     

供应链管理下的企业纵向边界

在阐述交易成本理论对企业纵向边界的解释的基础上,指出供应链管理影响资产专用性、不确定性和交易频率,降低了供应链上企业的交易成本,使企业纵向边界趋于缩小。然后针对企业如何结合核心能力理论进行重组提出一些建议。     

Free boundary and optimal stopping problems for American Asian options

We give a complete and self-contained proof of the existence of a strong solution to the free boundary and optimal stopping problems for pricing American path-dependent options. The framework is sufficiently general to include geometric Asian options with nonconstant volatility and recent path-dependent volatility models.      

Human resource management in Chinese multinationals in the United Kingdom: The interplay of institutions,culture, and strategic choice

This is a study of the challenges faced by Chinese expatriate managers and their strategic responses in securing a workable degree of alignment in UK subsidiaries, against a backdrop of competing home‐country and host‐country pressures. Although much of the literature on home‐country and host‐country effects tends to either adopt a culture or an institutional approach, this study highlights the intermeshed nature of the two. In locating cultural dynamics within an institutional firmament, this study juxtaposes the effects of each and draws conclusions as to their intersection. It is founded on in‐depth interviews with home‐country and host‐country managers. The findings suggest, on the one hand, Chinese expatriate managers tended to see local regulations as an obstacle to efficiency, rather than as a means to access context‐specific complementarities. On the other hand, these managers recognized the need to fit in with established locally specific ways of doing things and in securing sufficient staff buy in to sustain operations, and played a key intermediary role between headquarters and subsidiary.     

混凝土水分传输及边界条件试验研究

混凝土内部水分传输是导致耐久性问题的主要原因。根据混凝土块体和薄片在水分传输方面的相似性,基于已有混凝土润湿过程水分传输模型推导了混凝土薄片中水分传输方程,研究了纯水和不同浓度盐溶液环境下混凝土润湿过程水分传输规律,并以混凝土薄片为对象模拟研究了混凝土边界层水分传输规律。研究结果表明:混凝土边界层润湿过程由毛细吸附为主导,离子的存在不改变基本规律,仅影响传输速率。通过试验数据对质量传输模型进行拟合和验证,结果表明二者相关性较好。并在此基础上推导出了混凝土边界层饱和度变化模型,较好地描述了一维传输方向上混凝土边界层的饱和度变化规律。