Tactical and operational planning of express intra-city package services

In this paper, we focus on routing and load planning associated with the tactical and operational planning of an express intra-city courier service provider that receives a large number of shipments on a daily basis and is committed to delivering them to their destinations given a short service guarantee. Tactical planning relies on high-level aggregated demand rates over long time periods and takes the form of a multi-commodity service network design where the goal is to identify one path per commodity while maximizing consolidation opportunities in the network. Commodities are transported on their paths by means of a series of continuously operating vehicle cycles, where the structure and number of such cycles are determined concurrently with commodity path assignment decisions in a mixed integer programming. A second model is designed to refine the time allocation along different segments of a commodity path allowing a potential reduction in the number of vehicles required to meet the service guarantee. In operational planning, the focus is narrowed down to a shorter time period, and the baseline plan obtained from the tactical planning phase is adjusted to better fit potential deviations in observed demand patterns compared to the aggregate patterns. Through an extensive computational study designed on the topology of a major US city, we observe that the plans designed at the tactical level guarantee high service levels, which are improved at the operational level by customizing the plan to the special characteristic of a day of operation.     

数据采掘技术与信息服务

以信息服务为目的,较详细的介绍了数据采掘技术的过程、方法及工具,并对信息服务的流程、现代化手段和发展方向以及CIO在信息服务中的地位作用等作了简单的论述。     

政府碳税与补贴政策对外包再制造影响研究

为分析政府碳税与补贴政策对外包再制造影响,基于政府两种政策构建了外包再制造下制造/再制造博弈模型。基于博弈模型,对比分析政府两种对策对外包再制造下最优解的影响,研究主要得到：政府补贴政策可以有效提高废旧产品回收率,但只有当单位新产品碳税额度只有大于某一阈值时,政府碳税政策才会提高废旧产品回收率;政府采取补贴政策时,原始制造商通过降低单位再制造产品外包费用来获取政府补贴;政府采取碳税政策时,原始制造商通过提高单位新产品零售价格,把部分碳税转移给消费者;政府补贴政策可以同时增加原始制造商和再制造商收益;政府碳税政策可以增加再制造商收益,但只有单位新产品碳税额度大于某一阈值时,才可以增加原始制造商收益;当单位新产品对环境造成影响一定,并且单位再制造产品对环境造成影响与单位新产品对环境造成影响之比大于某一阈值时,政府补贴政策对环境造成影响最大、政府碳税政策对环境造成影响最小。     

Social Work Education's Role in Addressing People and a Planet at Risk

As the nature of the earth's ecological crisis becomes increasingly dire and impossible to ignore and as global concern continues to increase, social work, with its investment in issues of justice and its commitment to a person-in-environment perspective, needs to more aggressively evaluate its place in this crisis. This paper presents a study designed to explore US social work students' attitudes, interests in, and practices related to the environment, as well as their perceptions of the place for environmental issues in the social work curriculum. This study's findings suggest that social work students' attitudes toward the environment are generally consonant with those of the US population, and that there is strong interest in enhancing the amount and scope of exposure to environmental issues in the social work curriculum. A sizable majority of all social work students surveyed view environmental justice as an important aspect of social justice and a viable area of concern for social workers, and they expressed an interest in seeing more content on environmental justice in social work education. Suggestions for integrating this content into the curriculum via inter- and trans-disciplinary, and service-learning approaches are discussed.     

大学生志愿服务参与意愿模型与激励机制的调查

在当前利益多元化的现实背景下,大学生参与志愿服务有了更深层次的动机和多维的目标诉求,大学生对志愿活动拥有较高热情的同时参与的持久性却很低,其参与活动动机除受到志愿者个体的影响外,家庭和高校两大外在因素的影响尤为显著。因此,应完善志愿者激励机制,理性构建志愿者服务活动的内部和外部激励机制,以促进志愿者活动的规范化、制度化和长足发展。     

战后初期菲律宾政府对日媾和政策论说

战后菲律宾的对日媾和政策主要包括赔偿与安全两个方面,主张严惩日本。当美国对日政策转变之后,美菲间在对日媾和问题上分歧重重。但由于菲律宾对美国的依附关系,其对日媾和政策主要受美国主导,而美国亦将菲律宾作为其阵营内重要成员而重视其意见,这决定了菲律宾在遵循美国媾和框架的前提下可对之进行微调。最终在美国的协调下,菲律宾签订了《旧金山和约》,后来菲日间又签订了的赔偿条约。媾和问题的解决对战后的菲日两国均产生了重要影响。     

Technology,offshoring and the task content of occupations in the United Kingdom

The authors analyse change in employment levels and in the task content of occupations, both within occupations (i.e. at the intensive margin) and between occupations (i.e. at the extensive margin) in the United Kingdom over the period 1997–2006 using data from the national Skills Survey, which has comparable within‐occupation task data for three waves: 1997, 2001 and 2006. They find that within‐occupation task content changed significantly, and that the magnitude of change was similar to that found at the extensive margin. Their econometric results suggest that these intensive‐margin shifts can be explained by technological improvements but not by offshoring.     

Service Learning and The Compass Trail

Students used a compass trail to show how they could perform service to their school. When students performed service learning, they completed a real task that was needed for a grateful audience conjoined with academic content in the lesson. Students worked on the school grounds and used content from their regular curriculum while looking for real-life connections to academic applications. Students became involved in real projects that they found meaningful while making contributions to the community. Students learned about geographic tools and used those tools to accomplish their service projects. The students realized that the experience was real from their preparations, through the execution of the project, and the formative evaluation.     

企业人力资源招聘服务外包研究动态及其发展趋势

在知识经济高速发展的今天,人才作为"第一资源"的地位日益凸显。招聘是企业获取高素质人才的重要通道,其中招聘服务外包作为人力资源管理外包的一个新兴发展方向,近年来更是受到了广泛关注。通过招聘服务外包文献的梳理,主要从基本脉络、内涵、动因与优势、风险与应对四个方面对我国招聘服务外包的研究动态进行了全面回顾与概括,在此基础上对未来的研究趋势进行了展望,以期对今后的研究提供有益的参考与借鉴。     

河北省服务业发展政策分析

随着工业化水平的提高,服务业在国民经济和社会发展中的地位日益突出。河北省一贯重视服务业的发展,采取了一系列行之有效的政策措施。但是,发展中的问题依然存在。本文对近年来河北省服务业发展政策及其成效进行了梳理,在此基础上,通过分析服务业发展中依然存在的突出问题,对如何推进河北省服务业进一步发展提出了政策性建议。