大规模定制时代的CRM系统功能框架

大规模定制不仅涉及生产方式的转变,对于营销模式、库存管理等生产链条上个各个环节也提出了更高的要求。整合企业原有SCM系统、ERP系统及电子商务平台,利用CRM系统进行大规模定制时代的客户关系管理是企业提高竞争力的核心所在。     

简述PLC可编程控制器在北京南站能源站BAS系统中的选型

文章通过对北京南站能源站"热、电、冷三联供+污水源热泵+补燃"系统BAS专业二次深化设计的总结,从输入输出(I/O)点数的估算、存储器容量的估算、控制功能的选择、机型的选择等方面,介绍BAS系统PLC应用的要点。     

会计稳健性根源探析

利益相关者之间的信息不对称是会计稳健性产生的根本原因。损失函数的不对称包括契约性的和非契约性的。遭受损失的契约方会向管理当局和非契约方寻求帮助以降低其损失,准则制定机构和法律制定机构会分别制定更加稳健的会计准则以及执行严格的法律法规,从而保证处于信息劣势方不发生损失或者降低损失程度。准则以及各项法律法规在一定程度上形成了外部公司治理机制,从而产生了会计稳健性。     

一类相同材料焊接问题的稳定性

文章讨论了相同材料带一个孔洞无限平面焊接问题的稳定性,通过引进两个全纯函数,把焊接问题转化为黎曼边值问题中的跳跃问题,从而得到应力函数的表达式,借助柯西型积分关于积分曲线和核密度的稳定性来研究其稳定性,并给出误差估计。     

知识产权文化的中国实践：现状调查与政策建议

基于对知识产权文化建设的文化事业定位,我国的知识产权文化实践须主要依靠政府力量开展工作。通过对全国各级知识产权政府主管部门及相关机构知识产权文化建设工作现状及政策需求的调查,提出政府在知识产权文化建设工作中应加强宏观政策指导和顶层设计,建立文化建设管理考评制度,健全部门间的协同机制,丰富宣传普及创意,拓宽教育培训渠道,并鼓励具有中国品质的知识产权文化输出,全面提升工作成效。     

WTO框架下政府采购透明化的发展与我国对策

加入《政府采购协定》不但将使我国市场完整地对外开放,而且将极大地促进国内政府采购制度的完善和发展。我国准备加入的GPA,是一个对开放程度和透明度要求很高的协议,而且正处于一种更新换代的特殊时期。认真分析WTO框架下的政府采购透明化的发展形势,不断完善我国相关制度建设,不仅对我国加入GPA的谈判起着重要作用,而且对我国政府采购也具有重要的现实意义。     

效率提高会吞噬就业吗？旅游产业升级的就业效应研究

文章构建了旅游产业升级的就业效应测算模型,将旅游产业升级的就业效应分解为就业创造和就业破坏两个方面,并从总量、结构以及行业异质性三个角度对2000-2014年中国旅游产业升级的就业创造和破坏机制进行了研究。结果表明：(1)中国旅游产业升级总体上具有积极的就业增长效应,但由于旅游产业功能升级不足,旅游产业升级的就业创造效应主要来源于规模扩张和结构变动。(2)各行业就业增长与其效率滞后性基本呈现为正相关的关系,说明在旅游业内部存在鲍莫尔成本病问题。(3)住宿业就业创造与旅游总产出增长之间出现了此消彼长的两难困境。未来中国旅游产业升级应注重与文化产业融合,推进旅游向审美化、品质化、体验化方向发展。     

Government size,government debt and globalization

This article empirically investigates the effect of globalization on government size and debt. Using panel heterogeneous cointegration techniques to a panel of developing and developed countries, it finds that globalization reduces government size and debt. In terms of components of globalization, government size is found to increase with trade openness but decreases with financial, social and political globalization. On the other hand, government debt increases with financial and trade openness but decreases with social and political globalization. The evidence is robust to different estimation methods and different samples. Our data also indicate unidirectional causality running from globalization measures to government size and debt.     

On a generalization of a class of production functions

In Appl. Econ. Lett. 18 (2011), 1777–1784, as a natural generalization of some famous production models with two inputs, C.A. Ioan and G. Ioan introduced a new class of production functions with constant return to scale, called sum production function, and proved three theorems of characterization for such production models. In this article, we give new and more simple proofs of these theorems, extending also the results to the case of increased/decreased return to scale. The generalization to the case of an arbitrary number of inputs is also discussed.     

Pseudolikelihood estimation of the stochastic frontier model

Stochastic frontier analysis is a popular tool to assess firm performance. Almost universally it has been applied using maximum likelihood (ML) estimation. An alternative approach, pseudolikelihood (PL) estimation, which decouples estimation of the error component structure and the production frontier, has been adopted in both the non-parametric and panel data settings. To date, no formal comparison has yet to be conducted comparing these methods in a standard, parametric cross-sectional framework. We produce a comparison of these two competing methods using Monte Carlo simulations. Our results indicate that PL estimation enjoys almost identical performance to ML estimation across a range of scenarios and performance metrics, and for certain metrics, outperforms ML estimation when the distribution of inefficiency is incorrectly specified.