创业失败研究的演化路径与热点领域——基于科学知识图谱

以Web of Science数据库收录的1999—2015年创业失败研究文献为研究对象,运用可视化软件CiteSpace V,分别绘制了创业失败研究的时空分布、文献共引与关键词共现知识图谱,据此探析了创业失败研究的时空分布、演化路径和热点领域。研究结果表明:美国学者引领创业失败研究,我国在此领域的研究文献数量总体稳步增加,相关研究紧跟国际前沿;创业失败研究的演化路径是,研究层面日趋多样化、研究方法以质化研究为主且实证研究日趋加强,创业失败管理与后续创业活动正取代创业失败的归因和影响而成为研究主流;创业失败研究的三大热点是创业失败与再创业活动的关系、创业失败学习以及创业失败管理。     

IMAGES OF AN UNFOLDING DIVERSIFICATION PROJECT

This article studies a diversification-project in a medium-sized company from a cognitive perspective. Using a set of cognitive mapping techniques, it focuses on the images which the managers in this company have of the evolving diversification project in which they are involved. At the same time, it seeks to explore the organizational learning processes that arise during diversifying. It is suggested that a strict division of activities during the course of a diversification project may hamper organizational learning, as it excludes the possibility for acquiring shared experiences and thus of creating a common frame of reference. Consequently, it is argued that organizational learning during a diversification process may benefit from the active involvement (to some extent) of the various parties in each other’s activities.     

关于在化工本科专业如何更好的应用《AUTOCAD》进行制图的讨论

《AUTOCAD》是化工专业的必修课程,如何更好的应用《AUTOCAD》进行制图关系到学生毕业以后的就业问题,所以学校和学生都比较重视该软件的学习。因此很多教师都对该课程的学习进行了有益的探索,取得很大的进步。本文是对作者在教学中的形成的《AUTOCAD》教学经验进行了总结,希望对《AUTOCAD》的教学有所帮助。     

Strategic management tools and public sector management

Abstract

This article highlights the applicability and effectiveness of two well established strategic management tools, value chain and stakeholder analyses, in the context of seven public sector strategic consultancy projects. The article provides a strong justification for the use of both models, when used independently, but particularly in conjunction, as powerful strategic analytical frameworks that can significantly encourage and illuminate strategic discourses in public sector organizations.

The article establishes that strategic tools such as value chain analysis, when applied in the public sector context, require significant adaptation to maximize their contribution to understanding a given situation. This study proposes that the strategic analysis of relationships that build or contribute to concepts of organizational value are of limited importance if the complex web of interdependent relationships themselves are not clearly demonstrated. This work therefore makes a clear case for applying two strategic models, value chain analysis and stakeholder analysis, in an analogous way to demonstrate how strategic understanding in the public sector is enhanced as a result of such symbiosis.     

对两个共形映射线性变换公式的推广

复变函数中共形映射变换,在处理边界为圆弧或直线的区域变换中具有着很大的作用。本文利用旋转变换等方法,将已知的简单线性变换推广到更为一般的情况当中,使其更具有普遍性和重要的应用价值。     

TMS320VC5416 DSP存储空间配置方法研究

文章介绍了TMS320VC5416 DSP芯片的存储结构,在此基础上重点分析了其存储空间与物理存储器的映射关系,最后给出了存储空间配置方法的一般步骤。     

魅力型领导、情感控制策略与内部审计人员工作绩效

随着内部审计重要性的日益凸显,组织内部的领导和员工关系对内部审计人员工作绩效产生的影响越来越受到关注。以情感控制策略为中介变量、员工个体特征为调节变量,构建了魅力型领导对内审员工工作绩效的影响模型,通过对241名内部审计人员进行问卷调查及数据分析,发现内部审计人员工作绩效受其团队风格的影响,且魅力型领导通过员工认知重估和表达抑制两种情感控制策略作为中介变量对工作绩效产生了显著的间接影响;同时,在不同年龄、不同性别的内部审计员工之间,情感控制策略的影响存在显著差异。     

周期性协作频谱感知机制的优化

为了提高检测性能和频谱资源利用率,对认知无线电网络中的周期性协作频谱感知 机制进行了研究。针对不同的衰落信道环境,通过引入有效传输时长比例和干扰时长比例作 为次用户服务质量的衡量标准,给出了集中式协作感知下的检测时长、数据传输时长以及协 作用户数量等参数的最优选取方法,从而获得最高的信道效率。仿真结果表明,通过选取最 佳的协作感知机制参数,可在保证系统检测性能和干扰容限要求的同时,显著提高次用户在 空闲信道的有效传输时长比例,实现了频谱利用效率的最大化。     

Evaluation of the cognitive image of a country/destination by the media during the coverage of mega‐events: the case of UEFA EURO 2004TM in Portugal

By reporting a study undertaken during the final stages of the European Football Championships—UEFA (Union of European Football Associations) EURO 2004^TM, this paper aims to evaluate the cognitive image of a country/destination by the media during the coverage of mega‐events, which may in turn contribute to the field of tourism promotion and planning. By applying various statistical methods, it is possible not only to assess and identify the aspects which have contributed the most to the opinion‐forming of autonomous agents, but also to present empirical evidence of the influence of the organisation of this event on the image formation of the destination as a whole. Copyright © 2007 John Wiley & Sons, Ltd.     

城市小尺度绿色空间植被层次制图量化研究——以北京西海和庆丰公园东区为例

尝试对城市小尺度绿色空间中植被垂直层次展开水平制图,分步骤对北京西海岸边和庆丰公园东区的绿色空间进行了场地尺度的植被用地和垂直层次调研、分类、制图和量化分析,共划分出5类用地植被类型和19种植被层次类型。通过地理信息系统软件计算显示,2个样本场地以中等垂直层次丰富度的植被结构类型占优。其中庆丰公园场地的高、中层次丰富度植被综合占比有优势,西海场地高层次丰富度植被比例较高。植被垂直层次制图是一种服务风景园林规划设计实践的兼具科学性、直观性、便捷性的空间量化研究方法,既是城市绿色空间场地尺度可行的前期调研手段,也可以为城市中稀缺的绿色空间的评估、保护、管理提供基础。