联盟组合的形成机理研究——基于复杂网络视角

本文在界定联盟组合的概念以及其复杂网络特性的基础上，指出联盟组合的形成与发展是焦点企业在一定的外部条件下，根据自身的实际情况和价值最大化的目标进行的有向选择而形成有向网络的过程，即联盟组合是多个焦点企业与其伙伴在有向机理的支配下多种机理共同作用的结果。有向选择机理、学习机理、共享机理、协同机理、突变机理在一定的环境下相互作用，共同推进联盟组合从无序向有序发展。     

企业R&D投入影响因素——基于企业生命周期视角的实证检验

以中国A股主板制造业上市公司为样本,实证检验生命周期不同阶段企业规模、债务水平、国有控股、股权集中度、管理层持股、董事长与总经理两职设置状况与R&D投入的关系,研究结果证实：大企业比小企业更有利于R&D投入;负债对R&D投入具有制约作用;股权集中有利于R&D投入。国有控股、管理层持股、董事长与总经理两职设置状况与R&D投入的关系受企业生命周期的调节,在企业成长和成熟阶段,国有控股不利于R&D投入,而在企业衰退阶段,国有控股有利于R&D投入;在企业成熟阶段,管理层股权激励不利于R&D投入,而在衰退阶段,管理层股权激励对R&D投入有促进作用;在企业成长阶段,“两职”合一可能有利于R&D投入,在成熟和衰退阶段,“两职”分离更有利于R&D投入。     

基于纹理分割的视频人体检测

提出一种新的基于图模型纹理分割的视频人体检测方法。首先利用帧间拆分与背景拆分相结合的方式对人体进行粗分割;然后确定目标区域,利用高斯图模型建立纹理模型。通过变量选择和参数估计对纹理特征进行分析,并计算纹理图像的最大后验概率,将纹理后验概率大的归到一类。将基于图模型的纹理分割方法应用到视频检测,实验显示了很好的效果。     

华北地区近期用电量与经济增长反向的分析

分析了华北地区2009年一季度用电量负增长与经济正增长的原因。结论为投资和消费的高位增长支撑了经济增长的较高水平;出口和以高耗能为主的重工业产品产量的快速下滑是用电量负增长的主要原因,大宗商品价格暴跌后的去库存化过程加剧了这种反差。金融危机时期用电量负增长而经济正增长的反向现象是华北地区高耗能工业为主经济结构的必然反映。     

天津港与石家庄无水港共生关系探究

为了探究京津冀一体化背景下港口发展战略的制定策略,研究了天津港与石家庄无水港之间是依托型互利共生关系,基于种群生态学的基本理论和方法,对一般的种群生态模型进行了适当的改进,在此基础上建立了能够反映天津港与石家庄无水港集装箱吞吐量之间关系的动力学模型。利用非线性系统稳定性的理论方法,分析了系统正平衡点存在的条件,以及正平衡点保持稳定的条件,得到了天津港与石家庄无水港能够长期稳定发展的条件。结合天津港与石家庄无水港的实际进行了数值模拟,对模拟结果进行了解释,模拟结果验证了理论分析的正确性。研究结果同样适用于其他港口与其无水港之间长期稳定发展的研究,是政府和相关部门制定决策的理论基础。     

The effect of mergers on variety in grocery retailing

We study a merger between two Dutch supermarket chains to assess its effect on the depth as well as composition of assortment. We adopt a difference-in-differences strategy that exploits local variation in pre-merger competitive conditions and thus in the merger outcomes. To define our control group, we account for selection on observables through a matching procedure. We observe that, after the merger, the assortment of the merging parties converges in markets where they are not directly competing one with the other. Instead, the merging parties reposition their assortment to avoid cannibalization in the areas where they directly competed before the merger. While the target’s stores reduce the depth of their assortment when in direct competition with the acquirer’s, the latter increase their assortment. This suggests that variety is a strategic variable in retail chains’ response to changes in local competition.     

港口经济综合评价指标的因子分析

对港口经济进行综合评价需要建立一套综合评价指标体系。本文选取2008年综合竞争力排名靠前的港口作为样本,通过收集各样本在2009年的经济指标数据,利用因子分析计算出各个港口经济的综合得分和排名。结果表明所选取的指标具有高度的内在关联性,可据此有效地对港口经济情况进行评价和建议。其中,大部分港口的经济排名和货物吞吐量排名差异较小,只有南京、深圳、秦皇岛、营口和日照等港口因各自情况的不同而具有较大的差异。     

基于模糊信息熵的港口物流系统评估分析

综合分析了港口物流系统的研究现状,从物流系统角度构建多层次港口物流系统评价指标体系,结合信息熵和模糊综合评价方法,建立了基于模糊信息熵的港口物流系统评估方法。此方法综合了主客观权重,克服了主观因素的影响。最后,选定沿海16个港口的物流系统进行了实证分析,结果表明此方法具有可操作性,为港口企业衡量其物流发展水平提供了参考依据。     

中国煤炭企业海外投资目标国选择及实施途径

伴随世界能源问题益显突出和国内市场国际化进程的加快,煤炭作为主要的能源及原料对国家能源供给和经济稳定的影响更加突出。中国煤炭工业在应对国内外竞争压力的同时,也面临着国际国内两种资源的选择和市场发展的机遇。当前中国煤炭工业海外投资已是大势所趋,这既是保障国家能源稳定供给和能源安全需要,也是寻求自身可持续发展和提高企业国际竞争力的必然选择。创新研究提出中国煤炭企业好海外投资选择目标的评测方法,从指导操作的角度,为中国煤炭企业海外投资的途径和策略选择提供方法指导。     

A capabilities‐based perspective on target selection in acquisitions

We develop a capabilities‐based theory of acquirer target selection, arguing that acquirers will pursue both low capability targets in existing contexts to deploy existing capabilities, and high capability targets in new contexts to acquire new capabilities. These arguments are formalized in an analytical model that jointly considers the benefits and costs of acquisition as a function of target capability level and context. The predictions from this model are tested in the Chinese brewing industry (1998–2007), with results showing that acquirers strongly prefer inferior targets in existing geographic markets, but are relatively more likely to choose superior targets in new markets, especially if they have strong acquisition capabilities. Our study provides insight into the factors driving target selection, and contributes to a capabilities‐based understanding of acquisitions. Copyright © 2015 John Wiley & Sons, Ltd.     

采用消息方式处理串口与主程序间的通讯

主要针对采用消息方式处理串口与主程序间的数据通讯进行介绍 ,另外 ,对在串口通讯中 ,端口在巡回监控处理方式与消息处理方式进行了简要对比说明 ,并且对串口数据接收是非确定性问题做一说明     

Product selection for newsboy-type products with normal demands and unequal costs

In this paper, we consider two newsboy-type products with unequal prices and costs. Both demands are independent and follow normal distributions with unknown parameters μ and σ. We study the product selection problem which deals with comparing two products and selecting the one that has a significantly higher profitability, in which the profitability is defined to the probability of achieving a target profit under the optimal ordering policy. The statistical hypothesis testing methodology is performed to tackle this selection problem. Critical value of the test is calculated to determine the selection decision. Sample size required for a designated power and confidence level is also investigated. An application example on comparing English-teaching magazines is presented to illustrate the practicality of our approach.     

Linking account portfolio management to customer information: Using customer satisfaction metrics for portfolio analysis

When appropriate variables are used, account portfolio analyses engender a convenient framework for the relationship composition of companies and allow management to reconsider which customers and relationship dimensions need attention. Based on an industrial company's key account relationships, the portfolio approach considered in this study employs Customer Satisfaction (CS) metrics as a portfolio dimension and suggests a new and more customer oriented approach to account portfolio analysis. Proposed portfolio matrices provide insights into the strength and stability of customer relationships. Furthermore, the matrices force managers to adopt a future perspective on customer relationships by evaluating the business potential of customers along with CS information and allow prioritization with respect to resource allocation. The study attempts to put forward customer heterogeneity in industrial markets and offers a managerial guideline embracing customer specific marketing actions. In addition, the paper proposes a new use for CS information in strategic decision making.     

内蒙古珠拉金矿区外围找矿标志

珠拉金矿是具有较大找矿前景的热液-蚀变形金矿床。变质砂岩是本矿区的主要矿石类型。文中着重介绍珠拉金矿的地质背景、矿化特征、矿石类型以及矿床成因,并简要阐述了金矿的找矿标志。     

E-commerce as a stockpiling technology: Implications for consumer savings

Shopping on the Internet spares customers the discomfort of carrying around heavy and bulky baskets of goods, since the service usually includes home delivery. This makes e-commerce a technology well suited to helping consumers to buy in bulk or to stockpile items on discount. I use grocery scanner data provided by a supermarket chain selling both online and through traditional stores to show that the introduction of e-commerce leads to an increase in bulk purchase and stockpiling behavior by customers. Since bulk and discounted items are sold at a lower price per unit, my findings highlight a new dimension in which online shopping can be beneficial to consumers. According to my calculations, the reduction in the cost of stockpiling triggered by the introduction of electronic commerce generates significant savings.     

贵州省玉屏侗族自治县铁观洞矿区水泥用石灰岩矿的水文环境条件及矿体特征

贵州省玉屏侗族自治县铁观洞矿区水泥用石灰岩矿地处玉屏侗族自治县城的田坪镇铁观洞,是很重要的水泥用石灰岩产区。在前人地质调查的基础上,我们进行了一系列工作,查明了矿体赋存层位、产出形态、规模、产状及空间位置、矿石类型及矿石质量情况,来揭示矿体特征和分布规律。     

Managerial technologies and power relations: a study of the Australian waterfront

In recent times, the modern port has been characterised by rapid changes in work technologies and the consolidation of logistics functions. These changes signify an important recomposition of the port labour process and raise questions about the strategic location of frontline manual jobs. This research examines how these changes have played out in the Australian ports industry, developing the argument that a depersonalised managerial form of control is emerging with potentially challenging consequences for worker solidarity and collective organisation. The argument is that relations between port management and workers have changed significantly, with a reconfiguration of job roles, skill compositions and thus workplace power relations. It is informed by qualitative research at two Australian ports, exploring the organisation of work and the impact of recent technologies.     

柳坝沟金矿床重要的找矿标志——钾长石化与硅化

柳坝沟金矿为著名的哈达门沟金矿床的外围岩金矿床,位于华北克拉通北缘西段。本文通过柳坝沟金矿床钾长石化和硅化蚀变特征的实践和理论研究,指出了钾长石化和硅化的野外找矿指示意义,为今后野外勘探同种类型矿床的找矿工作提供线索。     

Contractual (In)Security, Labour Regulation and Competitive Performance in the Port Transport Industry: A Contextualized Comparison of Britain and Spain

Spanish ports have traditionally been derided for poor performance and acrimonious labour relations. This situation has been reversed in recent years through a programme of reform that has (a) created a more congenial organizational ecology in which firms co-operate as well as compete; (b) ensured the collective provision of vital production inputs such as training and social peace; and (c) co-ordinated investment in new port capacity and equipment. Spanish ports now match the performance of Britain's privatized and deregulated port transport industry, where co-operation is more notable by its absence, insecurity is rife and price competition intense. Through a contextualized comparison of labour regulation in the two countries, it is possible to demonstrate that an 'institutionally saturated' and 'politically bargained' system of production and employment is compatible with, if not a necessary condition for, competitive performance in the international port transport industry.     

新疆煤炭地质勘查工作应加强对放射性矿产的研究

放射性铀是高能的固体金属燃料,铀矿是当今世界利用最为广泛的放射性矿产之一,它既是有益矿产又是有害矿产,而新疆境内放射性铀矿在成因上与煤矿有着密切的关系,因此,在煤炭勘探过程中应加强对放射性—铀矿的研究工作。