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Agglomerative Forces and Cluster Shapes
Entrepreneurship Geographic Location Patents Labor Industry Clusters
2015/4/23
We model spatial clusters of similar firms. Our model highlights how agglomerative forces lead to localized, individual connections among firms, while interaction costs generate a defined distance ove...
William R. Kerr and Scott Duke Kominers
Entrepreneurship Geographic Location Patents Labor Industry Clusters
2015/4/23
We model spatial clusters of similar firms. Our model highlights how agglomerative forces lead to localized, individual connections among firms, while interaction costs generate a defined distance ove...
Industry Equilibrium with Open Source and Proprietary Firms
Investment Technological Innovation Knowledge Sharing Industry Structures Open Source Distribution Research and Development
2015/4/23
We present a model of industry equilibrium to study the coexistence of Open Source (OS) and Proprietary (P) firms. Two novel aspects of the model are: (1) participation in OS arises as the optimal dec...
Breakthrough Inventions and Migrating Clusters of Innovation
Geographic Location Immigration Disruptive Innovation Technological Innovation
2015/4/22
We investigate the speed at which clusters of invention for a technology migrate spatially following breakthrough inventions. We identify breakthrough inventions as the top one percent of US invention...
See No Evil: When We Overlook Other People's Unethical Behavior
Decision Choices and Conditions Ethics Moral Sensibility Behavior Motivation and Incentives
2015/4/22
The value of teams in new product development (NPD) is undeniable. Both the interdisciplinary nature of the work and industry trends necessitate that professionals from different functions work togeth...
Gender in Job Negotiations:A Two-Level Game
Negotiation Jobs and Positions Game Theory Gender Characteristics
2015/4/22
We propose a two-level-game (Putnam, 1988) perspective on gender in job negotiations. At Level 1, candidates negotiate with the employers. At Level 2, candidates negotiate with domestic partners. In o...
Ethnic Scientific Communities and International Technology Diffusion
Technology Transfer Tacit Knowledge Productivity Patents Innovation Research and Development Entrepreneurship Immigration Networks
2015/4/21
This study explores the importance of knowledge transfer for international technology di§usion by examining ethnic scientiÖc and entrepreneurial communities in the US and their ties to their home...
The Impact of Component Modularity on Design Evolution:Evidence from the Software Industry
Product Design Adaptation Software Information Technology Industry
2015/4/20
Much academic work asserts a relationship between the design of a complex system and the manner in which this system evolves over time. In particular, designs which are modular in nature are argued to...
随着船舶大型化，京杭运河苏北段船闸通过能力的计算方法采用的规范算法已与实际情况不符。本文借鉴道路基本通行能力的概念与分类，定义了与之相对应的三类船闸通过能力，提出可能通过能力公式，并依据理论和观测数据初步提出了适用于苏北运河目前船型分布的船闸可能通过能力的计算方法，基本通过能力和可能通过能力的公式，研究成果为相关工程提供了参考依据。
我国产业间结构升级对碳排放强度影响的实证研究
Moore模型 产业间结构升级 碳排放强度 实证研究 Moore Model Structure Upgrade between Different Industries Carbon Emission Intensity Empirical Analysis
2014/6/23
运用Moore模型测度了我国1979~2012年的产业间结构变动值，采用碳排放强度来表示碳排放的结构性变动，并通过相关性检验与Granger因果关系检验来研究产业间结构变动与碳排放强度变量之间的关系。结果表明：二者之间存在一定相关性，碳排放强度由于受实际GDP因素的影响会导致我国产业间结构变动，并且有较强的滞后效应；而我国产业间结构升级不是碳排放量结构性优化的Granger原因。产业升级包含产业间...
产业集群的外部联系研究 ———以中关村高新技术产业集群为例
产业集群 外部联系 中关村高新技术产业
2013/11/14
产业集群的外部联系是产业集群发挥其独有优势的关键，在保障资源的融通和促进产业集群发展中具有重要作用。根据资源流动的不同，结合外部联系的具体形式及其所产生的对产业集群的促进作用，提出研究假设，并选择中关村高新技术产业集群进行实证分析，对不同外部联系形式对产业集群发展的促进作用进行了验证，得出结论：政府在产业集群的发展过程中一方面要积极促进产业集群外部联系的建立和拓展，另一方面则需及时评估其效用，避免...
适应新型城镇化的交通发展
新型 城镇化 交通
2013/8/8
新型城镇化是国家经济社会发展的重大战略。在这一重大战略的实施中，交通运输部门承担着重要使命，必须以改革创新的精神，不断探索新情况，研究新问题，确保交通发展始终运行在科学发展的轨道上。
积极发展家庭农场需要破解四大难题（图）
家庭 农场 四大难题
2013/8/8
2013年中央一号文件明确指出，积极培育并发展家庭农场这一新型农业经营主体。上海、湖北、吉林、浙江、安徽等地的实践也证明，家庭农场是促进家庭经营集约化、专业化、规模化的有效形式，是促进农业转型、培养新型职业农民、留住农村年轻人农内就业的有效路径。然而，作为一种新型农业经营主体，积极发展家庭农场还存在不少需要破解的难题。
The income gradient in children’s health: A comment on Currie, Shields and Wheatley Price
Children Health ncome United States England
2014/3/24
This paper re-examines differences found between income gradients in American and English children’s health, in results originally
presented by [Case, A., Lubotsky, D., Paxson, C., 2002. Economic sta...
Guidelines for Constructing Consumption Aggregates For Welfare Analysis
Welfare Analysis Guidelines for Constructing Consumption Aggregates
2014/3/24
Guidelines for Constructing Consumption AggregatesFor Welfare Analysis。