Web服务组合模型的研究

针对Web服务组合问题,提出一种基于先进先出通信通道的Web服务组合模型,支持Web服务的层次性组合。给出了该模型的形式化定义及Web服务描述语言与该模型的对应关系。介绍了用于建模Web服务行为的Pi-演算语言的基本语法及操作语义。通过一个旅游路线预定服务研究了Web服务组合模型的实际应用。     

A classification of resources for employee-based value creation and a future research agenda

This conceptual paper aspires to provide a theoretically sound understanding of the value creation process of a specific value network (i.e., firm–employee context). Drawing on service-logic and resource-based frameworks, a classification of four diverse resource types in an organizational context is introduced (i.e., core, augmented, add-on, peripheral resources), based on their exchangeability and their contribution to employees’ value creation and co-creation. This classification enables a better understanding of the nature and the unique features of different firm–employee exchanges in an organizational context, and delineates each type’s distinctive role in employee-based value creation activities. Four propositions derive from this classification; this suggests that not all resource types can be exchanged and that the relative contribution of various firm–employee exchanges to value creation is asymmetrical. A future research agenda is also presented, discussing the potential implications of this classification for contemporary organizations.     

“三合一”型政府管理模式:现实与理论的全景式展示

建设法治型政府、责任型政府和服务型政府是我国政府进行政府改革的有益尝试,是用新的价值取向和路径选择对传统政府管理模式进行根本性或方向性的调整.本文将对这三种政府管理模式作一番现实考量和理论分析,以求正确处理好它们之间的关系,努力彰显出它们在目前我国市场经济发展水平和社会整体发展水平中的本色和个性,并使其相辅相成、相互促进,塑造"三合一"型政府管理模式,可以实现社会理想的崇高意蕴,契合"和谐社会"的构建,这对促进我国经济社会协调发展和全面进步,具有重大的理论和实践意义.     

赫德与中国海关

赫德在中国工作长达52年，他兴办了近代海关，使关税成倍增长；设置了近代助航设备，便利了航运；创办了近代高等学校，设置了天文台、物理实验室；翻译了西方书籍，引进了西方科技；兴办了近代邮政，为中国培养了各方面的人才。成效卓著。他曾受到清政府多次表彰，官至太子太保，以肯定他为中国近代化作出的巨大贡献。     

Customer Use of Virtual Channels in Multichannel Services: Does Type of Activity Matter?

Many firms have recently adopted virtual channels, based most notably on the Internet and the phone, to complement the delivery of services to their customers by their existing physical facilities. The success of such multichannel (MC) strategies relies on the alignment of service design decisions—namely those concerning the allocation of service activities to virtual channels—with customers’ MC behavior. Although prior studies have looked at the intensity with which customers use virtual channels, they have not addressed virtual channel use for different types of service activities. In our study, we investigate whether customers’ use of virtual channels for MC services varies with the type of service activities they engage in, and if so, in what way. In doing so, we address two objectives. First, we investigate the impact of accessibility to the physical channel on the degree of use of virtual channels (Internet and phone, aggregated) for different types of activities. Second, we look at channel preferences (Internet vs. phone) for different types of activities when customers do resort to virtual channels to conduct activities. To address our objectives, we develop and test hypotheses regarding customers’ use of virtual channels based on the match between activity attributes (complexity and volume) and channel attributes (access efficiency, interface efficiency, interface richness). Using data from a MC bank, we find that the impact of accessibility to physical channels (specifically, customer distance) on customers’ use of virtual channels, as well as the relative use of Internet versus phone, depend on the type of activities.     

节能服务法律制度研究

节能不是义务,而是一种商品,一个产业,节能服务更是一种产业。节能的时代要求催生了数千亿元的节能服务市场,但是节能服务法律制度的不完善严重制约着节能服务市场的发展,本文希望通过对节能服务法律制度的研究,提出一些对我国节能服务市场发展的可行性建议。     

立足服务 改革基层人口计划管理机制

基层人口计划是各级人口计划的基础 ,也是落实人口计划时的执行计划 ,它直接影响到家家户户。现行基层人口计划的管理措施中 ,有些地方亟待完善。改革现行基层人口计划管理机制 ,让群众自愿选择生育时间已成为计划生育工作发展的必然要求     

适应性网络空间抽样的设计及估计研究

随着大数据背景下抽样环境复杂化,特别是3S技术（遥感技术、地理信息系统和全球定位系统）日趋成熟,越来越多社会经济问题涉及空间抽样,其样本呈现出规模相对稀少、分布不均匀、局部聚集的特征,使得传统抽样调查面临着严重挑战。本文介绍了适应性抽样技术应用于空间网络环境的基本原理、主要操作步骤和马尔可夫链蒙特卡罗估计推断,并以广州市天河区的商户抽样为例讨论实际操作中应注意的问题,以期为流动人口、环境污染、区域经济研究等方面调查提供理论支撑和实证方法参考。     

Strengths,weaknesses, opportunities,and threats to housing first in Metro Vancouver

ObjectivesTo understand the experience of Metro Vancouver’s Homelessness Partnering Strategy-funded Housing First program and how it is functioning from the perspective of a representative sample of providers and clients who deliver and receive HF services.MethodsThirty-four clients and providers who currently or formerly delivered HF in Metro Vancouver participated in one-on-one interviews (n = 26) or focus groups (n = 8) between March and April 2017 and data were thematically analyzed.ResultsStrengths of the HF program included: the ability to transition persons from the street into housing with individualized service supports and, in certain cases, with 12-month rent subsidies, household goods, and connection to community resources. Identified program weaknesses were: eligibility criteria, limited rent subsidy funds, limited provider capacity, and workload burden. Suggested opportunities to improve HF were: streamlining federal and provincial reporting and rent subsidy systems and building friendly landlord networks. Potential threats to HF described were: limited affordable housing, stigma and discrimination toward clients, inadequate income assistance, and limited opportunity for cross-sector collaboration.ConclusionsThe delivery of HF in regions that have limited affordable housing presents unique challenges. Recommendations are provided to improve HF practice and policy in these contexts.     

大数据背景下网络调查样本的建模推断问题研究——以广义Boosted模型的倾向得分推断为例

随着大数据和网络的不断发展,网络调查越来越广泛,大部分网络调查样本属于非概率样本,难以采用传统的抽样推断理论进行推断,如何解决网络调查样本的推断问题是大数据背景下网络调查发展的迫切需求。本文首次从建模的角度提出了解决该问题的基本思路：一是入样概率的建模推断,可以考虑构建基于机器学习与变量选择的倾向得分模型来估计入样概率推断总体;二是目标变量的建模推断,可以考虑直接对目标变量建立参数、非参数或半参数超总体模型进行估计;三是入样概率与目标变量的双重建模推断,可以考虑进行倾向得分模型与超总体模型的加权估计与混合推断。最后,以基于广义Boosted模型的入样概率建模推断为例演示了具体解决方法。