关系契约治理与外包合作绩效——对日离岸软件外包项目的实证研究

对日离岸软件外包项目具有典型的关系契约特性,现有文献对软件外包中的关系契约治理及对合作绩效的影响还缺乏系统的理论分析和实证研究。信任、交流和相互适应调整作为重要的关系规范,在对日软件外包关系契约治理中具有重要意义。本研究根据访谈和110个项目的数据实证检验了关系规范对离岸软件外包项目绩效的影响。通过结构方程模型方法发现,交流的有效性对于项目质量和供应商成本控制绩效有积极影响,相互适应调整对于成本控制绩效也有积极影响。这个发现有助于构建有效的关系契约治理机制,促进软件外包产业发展。     

部分国家季度支出法国内生产总值核算方法与数据发布情况及启示

本文研究分析并归纳了经济合作与发展组织（OECD）34个成员国及巴西、俄罗斯、印度和南非等4个金砖国家季度支出法GDP核算的主要方法、资料来源及数据发布情况,提出要进一步提高基础数据质量,加快正式建立我国季度支出法GDP核算制度。     

我国区域碳排放绩效差异及其影响因素分析——基于空间经济学视角

利用空间自相关Moran指数与面板数据空间计量模型,对1997--2009年我国29个省域的碳排放绩效的空间分布特征及影响因素进行了空间计量经济分析。结果发现：我国区域碳排放绩效在空间上存在较强的正相关性,表现出明显的区域集群现象,提高某一地区的碳排放绩效水平将有助于带动其相邻地区碳排放绩效水平的提高。对外开放水平、能源消费结构、产业与产权结构、市场化程度、技术进步和能源价格等因素对我国碳排放绩效有显著影响,其中技术落后和市场化程度偏低是制约我国碳排放绩效水平提高的主要因素。     

Strategic Motive for Introducing Internet Channels in a Supply Chain

Rapid advances of information technology in recent years have enabled both the manufacturers and the retailers to operate their own Internet channels. In this study, we investigate the interaction between the capabilities of introducing the Internet channels, the pricing strategies, and the channel structure. We classify consumers into two segments: grocery shoppers attach a higher utility from purchasing through the physical channel, whereas a priori Internet shoppers prefer purchasing online. We find that when the Internet shoppers are either highly profitable or fairly unimportant, the manufacturer prefers to facilitate the channel separation either through his own Internet channel or the retailer's. In the intermediate region, however, the manufacturer encroaches the grocery shoppers and steals the demand from the retailer's physical channel. With horizontal competition between retailers, a priori symmetric retailers may adopt different channel strategies as a stable market equilibrium. The manufacturer may willingly give up his Internet channel and leverage on the retailer competition. When the manufacturer sells through an online e‐tailer, Internet shoppers may be induced to purchase through the physical channel. This reverse encroachment strategy emerges because selling through the e‐tailer leads to a more severe double marginalization problem.     

广东省批发业发展现状和趋势解析——以东莞市为例

为系统掌握批发业的业态、结构、规模和空间分布等特点,以期为科学规划批发业的发展提供决策依据,本文以东莞市批发业为研究对象,综合运用了统计分析、问卷调查、实地访谈等方法,对广东省外向型经济的典型代表地区———东莞市批发业发展的现状和趋势进行了系统提炼和深入分析。研究成果为以外向型经济为特征的地区批发业的发展规划和深层次的定量分析提供参考和借鉴。     

影响ERP成功应用的关键因素因果模型——上线后的视角

以往研究识别了大量的ERP实施关键成功因素,但对上线后的应用关注较少,对关键成功因素之间的关系研究就更少。本文采用ERP系统上线后的视角,通过一个两阶段定性研究探索并构建影响ERP成功应用的关键因素因果模型。第一阶段以已发表的文章为数据源,采用内容分析方法得出48个关键因素;第二阶段进行了两轮焦点小组研究,借鉴软系统方法论归纳出以ERP成功应用、数据质量、持续使用、系统质量、系统—业务对接、维护和支持等6个二阶概念为核心的因果关系模型,并具体化了每个概念的组成。     

Full-time, part-time employment and life satisfaction of the elderly

There is continued interest in employment and subjective well-being among the elderly because of the increasing proportion of elderly population in the labor force. This study investigates the association between part-time and full-time employment and life satisfaction of the elderly in Taiwan. We also examine how these associations may differ across socio-demographic groups. An ordinal treatment effect model is developed to accommodate the discrete feature of the employment decision and the potential endogeneity of these two outcomes. Using a unique sample of the elderly in Taiwan, in contrast to findings for the general population of the previous studies, we find that part-time employment is significant and positively associated with life satisfaction, while elderly with full-time employment have lower life satisfaction. These results are robust across socio-demographic groups.     

作为记忆和遗忘的诗写——以罗鹿鸣诗歌为阐释中介

无论是人类意义的确认还是生存价值的指证,诗歌都在其中,如影随形。在商业因子无处不在的当下,热爱诗歌并执迷于创作的人往往面临着某种冒险。这种冒险对于每一个诗写个体来说,与其说是创作困境,不如说是生存警醒。在罗鹿呜的诗歌文本中,记忆和伴之而来的遗忘既是对冒险的诚实回答,更是对生存价值的体认和建构。在不断超越的诗写策略中,罗鹿鸣凭借独特的经历和对诗歌的感悟,完成了对过往生活的意义重述,也强化了对当下诗歌的美学关怀。虽然,在其借助记忆还乡的过程中,诗写策略也面临着传统文明衰落后所带来的新挑战,但这种挑战,应该视为优秀诗人承载生命价值的心灵之旅。     

Distribution lot-sizing models for arborescent supply chains with discrete-period variable demand

This study formulates a novel mixed-integer programming lot-sizing model for arborescent supply chains with discrete-period variable demand and then develops an efficient two-phase heuristic method, in which a combined multi-period demand ordering policy, rather than the lot-for-lot ordering policy usually assumed in previous papers, is adopted. Two important properties are introduced and used to obtain a better initial feasible solution. The good performance of the proposed heuristic method is verified through a comparison with the optimal solution method. It is also shown that the performance of the proposed combined multi-period demand ordering method is superior to that of the lot-for-lot ordering method. Sensitivity analysis is conducted to explore the impacts of changing the values of relevant parameters on the total supply chain cost, the total number of orders and the total number of opened members. Finally, a well-known logistics company in Taiwan is chosen to demonstrate the excellent performance and the aptness of the proposed ordering method.     

Equivalence of two conjectures on equitable coloring of graphs

A graph G is said to be equitably k-colorable if there exists a proper k-coloring of G such that the sizes of any two color classes differ by at most one. Let Δ(G) denote the maximum degree of a vertex in G. Two Brooks-type conjectures on equitable Δ(G)-colorability have been proposed in Chen and Yen (Discrete Math., 2011) and Kierstead and Kostochka (Combinatorica 30:201–216, 2010) independently. We prove the equivalence of these conjectures.