农户兼业、生产性服务与水稻种植面积决策——基于11省1646户农户的实证研究

本文基于全国11省1646户农户调研数据,构建实证模型分析了农户兼业、生产性服务与水稻种植面积之间的关系。结果表明,在兼业农户比重和平均兼业水平都很高的背景下,兼业导致的“劳动力流失效应”在纯农户和兼业农户的种植面积决策中均有所体现,并且在一兼农户中表现最为显著,而“投资效应”仅体现在纯农户的种植面积决策上。接受生产性服务有助于提高各类农户的种植面积,能够缓解种稻劳动力流失对种植面积造成的负面影响,同时能够缓解一兼农户农业收入比重下降对种植面积造成的负面影响。由此,加强粮食产业生产性服务体系建设、加大纯农户粮食生产补贴力度等是稳定我国水稻生产的重要举措。     

延长油田发展历程述评

延长油田是我国发现和利用最早的油田。在西方近代石油工业迅速发展并对我国造成冲击时，清政府开始了对延长油田的开发，但由于技术、资金、人才的缺乏，延长油田的开发长期停留在时断时续的状态下。新中国成立后，在大力发展石油工业的背景下，延长油田的勘探开发才取得了长足的发展。尤其是1997年产量超过100万吨后，延长油田进入了快速发展时期；10年后，油田的总产量超过了1000万吨。延长油田的发展，基本折射出了我国石油工业发展的曲折历程，有很多科学上、技术上、管理上的历史经验值得总结和研究。     

Mixed integer (0–1) fractional programming for decision support in paper production industry

This paper presents an effective and efficient method for solving a special class of mixed integer fractional programming (FP) problems. We take a classical reformulation approach for continuous FP as a starting point and extend it for solving a more general class of mixed integer (0–1) fractional programming problems.To stress the practical relevance of the research we focus on a real-life application in paper production industry. The constantly advancing physical knowledge of large scale pulp and paper production did have a substantial impact on an existing DSS in which mixed integer (0–1) fractional programming is introduced. We show that the motivation to solve a real-life fractional programming problem can provide the basis for a new approach in a new context that has an added value of its own, even outside the given application area. We describe the main characteristics of the DSS, the necessity to develop a non-iterative solution procedure and demonstrate both the effectiveness and efficiency of the proposed approach from practical data sets.     

全国及省际人力资本水平存量估算

估算全国和省际人力资本水平是经济增长研究所不能回避的问题。当前的研究主要采用教育年限法、物质投入法、生产函数法、人力资本回报法、人力资本特征与收入法和J-F终生收入法等六种方法。多角度比较和判别,可以验证生产函数法测算的各年相对人力资本水平较为可靠。使用生产函数法估算全国和各省的1952-2008年的人力资本存量,可刻画统一单位衡量的全国和各省人力资本水平。总体来说,全国和各省人力资本水平呈增长状态,各省人力资本存量以及增长速度存在明显差异。     

山东抗日根据地的灾荒与救济

抗战时期,山东根据地遭受了严重的天灾敌祸,由此而产生了极大的荒情。根据地党和政府及时采取了多项有力措施:一方面大力放赈救急,另一方面领导根据地军民扩大生产,增加财富。根据地的救荒运动不但为战胜灾荒、争取抗战胜利奠定了基础,而且也推动了社会进步。     

Children in immediate danger: Emergency removals in Finnish and Irish child protection

This paper presents a qualitative analysis of front‐line practices regarding emergency removals in Finnish and Irish child protection. It examines how the responses to children's immediate danger are framed by legislation and how front‐line practitioners assess the child's situation and make emergency placement decisions. The data consist of interviews with 16 Irish and 33 Finnish social workers. These child welfare protection systems respond differently to a task that appears to be similar. The Irish team‐based practice rests on the social workers' shared assessment of the child's needs, and the formal decision is made by the courts (or police officers at night‐time); and the Finnish practice involves only one single social worker who makes both the assessment and the removal decision. The Irish system is tightly time regulated, whereas the Finnish system provides a more flexible time frame. Both approaches put a lot of stress on social workers' practice, which also includes creative workarounds (e.g., “planned emergency removals” in Finland). Future research will need to explore these features from the point of view of a child's right to protection.     

人类学视角中的荣昌陶艺——关于荣昌陶艺的田野调查

荣昌陶器技艺是中国传统陶器技艺的重要组织部分，因其历史悠久、工艺精湛而久负盛名，与江苏宜兴陶、云南建水陶、广西钦州陶并称为中国四大名陶，荣昌又与广东佛山、江苏宜兴一起被誉为中国“三大陶都”。在千百年的传承和发展过程中，荣昌陶器为巴蜀地区人民的生产和生活曾做出过重要贡献。在非物质文化遗产保护热兴起的今天，重新梳理荣昌陶器技艺产生和发展的场境，发掘潜藏在陶器技艺背后的经济和文化动因，能够使我们在文化生态和生产条件发生巨大变化的今天更好地保护、传承和发展荣昌陶艺。     

我国盐业产业组织政策研究

产业组织政策的基本目标就是要促进产业实现有效竞争,我国盐业产业组织政策并没达到有效竞争的目标,长期处于"二元"产业组织结构。一方面"大工业盐"市场集中度较低,竞争过度,另一方面"食小盐"市场部门垄断严重,竞争缺失,导致产业组织效率低下。因此,当务之急,不仅要实行管制与竞争相兼容的盐业特许投标政策,还要出台规模经济与竞争活力相兼容的系列有效竞争政策——企业并购政策、经济规模政策和竞争活力政策,以促成金字塔形的产业组织体系,彰显各层次企业的规模经济,实现有效竞争,提高产业经济效率,进而提升我国盐业产业的国际竞争力。     

Cloud manufacturing system for sheet metal processing

Abstract

Cloud computing is changing the way industries and enterprises run their businesses. Cloud manufacturing is emerging as an approach to transform the traditional manufacturing business model, while helping the manufacturer to align production efficiency with its business strategy, and creating intelligent factory networks that enable collaboration across the whole enterprise. Many production planning and control (PPC) problems are essentially optimisation problems, where the objective is to develop a plan that meets the demand at minimum cost or maximum profit. Because the underlying optimisation problem will vary in the different business and operation phases, it is important to think about optimisation in a dynamic mechanism and in a number of interlinked sub-problems at the same time. Cloud manufacturing has the potential to offer decision support as a service and medium of communication in PPC. To solve these problems and produce collaboration across the supply chain, this paper provides an overview of the state of the art in cloud manufacturing and presents a model of cloud-based production planning and production system for sheet metal processing.     

100 key research questions for the post‐2015 development agenda

The Sustainable Development Goals (SDGs) herald a new phase for international development. This article presents the results of a consultative exercise to collaboratively identify 100 research questions of critical importance for the post‐2015 international development agenda. The final shortlist is grouped into nine thematic areas and was selected by 21 representatives of international and non‐governmental organisations and consultancies, and 14 academics with diverse disciplinary expertise from an initial pool of 704 questions submitted by 110 organisations based in 34 countries. The shortlist includes questions addressing long‐standing problems, new challenges and broader issues related to development policies, practices and institutions. Collectively, these questions are relevant for future development‐related research priorities of governmental and non‐governmental organisations worldwide and could act as focal points for transdisciplinary research collaborations.