基于多智能体的建筑业产业资质问题研究

由于目前关于建筑行业资质管理对建筑产业的有效性存在正反两方面不同看法,双方虽有定性理论分析和国外资质管理根据,但是无法说明资质管理对我国建筑产业整体收益具体影响,因而从个体企业行为角度出发,根据多智能体理论,使用Netlogo建模平台,建立中国建筑业的交易行为互动流程,模拟运行建筑产业执行或不执行资质管理的情况,观察并分析论证了资质管理有利于提高中国建筑产业收益能力。此外,在模拟过程中发现资质管理对产业结构也存在影响。     

Network concentration and airport congestion in a post de-regulation context: A case study of Brazil 2000–2010

This paper empirically investigates the main drivers of airline network concentration in an air transport market subject to rapid growth. We consider the Brazilian air transport industry of the 2000s, in which network concentration rapidly increased and was followed by a period of massive flight delays and cancelations, which resulted in the “big blackout” of 2006–2007. We develop an econometric model of network concentration, accounting for demand, cost and competition variables that may affect the propensity of carriers to concentrate flights and passenger connections on a few airports of a network. The main focus of the paper is on the relation between networks leading to the problems of the blackout episode. We investigate the dynamic pattern of the evolution of concentration before and after the abnormal period of operations and find that concentration began to rise at least six quarters before, and persisted at a high level until two quarters after the blackout – and then plunged steeply toward the end of the decade. We believe that our analysis contributes to an improved understanding of the behavior of air transport systems subject to network concentration and congestion. With respect to methodology, we suggest and employ the use of alternative measures of network concentration to check the robustness and validity of our results.     

Tourist Satisfaction and Destination Image of Vietnam's Ha Long Bay

Although considerable work has been done on destination image as a whole, far less research has investigated the differences in destination image assessments for domestic versus international visitors in developing countries. This study offers findings that illustrate the differences in perception of destination image, satisfaction attributes, and intention among domestic and international visitors to Ha Long Bay, a United Nations Educational Scientific and Cultural Organization World Heritage Site in Vietnam. The results of a survey on 650 tourists suggest that international visitors to the Ha Long Bay region have higher standards and are more critical in their evaluation of services than domestic visitors when judging this destination. Destination image is a common factor determining the level of satisfaction of both groups. Basic and augmented services were found to influence international visitors’ future intention toward the destination. This finding implies that the destination managers of Ha Long Bay need to improve current standard of augmented services to yield higher visitors’ propensity to recommend and return to the destination.     

Net Equity and Debt Flows to Emerging Market and Developing Economies in the Post-Crisis Era

We investigate the determinants of net equity and debt flows into 60 emerging and developing countries during 1986–2012, with a special focus on the period following the onset of the global financial crisis (GFC). Our results controlling for endogeneity show that net equity flows to emerging markets were mostly influenced by global risk factors, while net debt flows were affected by country-specific factors. We further distinguish the factors that were more pronounced in determining net portfolio flows to emerging markets since the GFC. The US real interest rate had significant spillover effects on net equity flows after the GFC. An increase in country’s domestic credit attracted net debt inflows before the GFC, while it was associated with net equity outflows after the GFC. We also find that capital controls moderated net debt flows since the GFC.     

略论低碳经济的发展向度与意义

低碳经济作为一种新的经济形式,无论是理论研究还是实践探索都呼唤发展哲学的观照。低碳经济作为一种新的发展模式,具有鲜明的低代价发展向度、普世的公正发展向度及强烈的创新发展向度,这对于人类社会的持续发展和文明跃迁具有重大而深远的意义。     

From Financial Repression to External Distress: The Case of Venezuela

Recent work suggests a connection between domestic debt and external default. We examine potential linkages for Venezuela, where the evidence reveals a nexus among domestic debt, financial repression, and external vulnerability. The financial repression tax (as a share of GDP) is similar to OECD economies, in spite of higher debt ratios in the latter. The financial repression “tax rate” is higher in years of exchange controls and legislated interest rate ceilings. We document a link between domestic disequilibrium and a weakening of the net foreign asset position via private capital flight. We suggest these findings are not unique to Venezuela.     

The impact of agricultural policy on farm income concentration: the case of regional implementation of the CAP direct payments in Italy

One of the objectives of agricultural policy worldwide concerns the support of farm income. Common Agricultural Policy direct payments (DPs) are the main instruments to support farm income in the European Union. This article addresses their role in the concentration of farm income. This is done by calculating the Gini coefficient and its disaggregation in a large sample of Italian farms in the period between 2006 and 2007. Although this approach has been used to develop ex‐post analysis in previous studies, this article is innovative given that it is used here in an ex ante analysis aimed at evaluating the likely impact of a recent reform proposal. This latter requests changing the current model to a regional model of DPs application to make payment rates (i.e., payment per hectare) homogeneous among farms in the same region. The analysis shows that DPs and farm incomes are both very concentrated but that DPs allow for an income concentration reduction in Italian farms. The shift to a regional implementation reduces DPs concentration and, to a limited extent, farm income concentration. Of the considered regionalization scenarios, those that redistribute DPs among regions are the most effective in reducing concentration. The extension of the Gini considered approach to an ex ante setting seems effective because it provides insights that could feed the policy debate regarding the forthcoming reform.     

New product development in foreign customer relationships: a study of international SMEs

Abstract

This study identifies a gap in research concerning how small and medium-sized enterprises (SMEs) can benefit from pursuing locally (rather than globally) oriented internationalization strategies. Becoming overly dependent on one single foreign market could potentially reduce the inflow and diversity of new knowledge that can serve as input for new product development. This study discusses how this risk can be minimized. In this endeavour we create a theoretical model that investigates how the local sales concentration and relationship-specific commitment of SMEs relates to new product development. To do this we draw on the behavioural internationalization process framework. The theoretical model is tested on an effective sample of 188 Swedish SMEs. The results show that relationship-specific commitment mediates the effect of local sales concentration on new product development. The implication is that investments which enable collaboration in important business relationships are crucial requisites for keeping firms innovative and in pace with market fluctuations. The findings thus contribute to international business literature by showing that a local market scope of operations combined with a relationship orientation are beneficial for new product development in international SMEs.     

Promoting Giving Campaigns in University Websites: A Cross-cultural Comparison between the United States and South Korea

ABSTRACT

This study was designed to compare the ways the websites promote giving campaigns between the United States and South Korea. Furthermore, this study explored how the campaign appeals are associated with the distinct cultural values between universities in the United States and Korea. Guided by a content analysis of 200 universities in the United States and South Korea, the findings of this study demonstrated that, compared to the Korean university websites, U.S. university websites more frequently targeted university-affiliated donors, including alumni, students, parents, and so forth, and used multimedia-based exemplars about the giving campaigns.     

马克思主义文艺思想的现实指引——六中全会决定和胡锦涛讲话理论溯源

党的十七届六中全会关于深化文化体制改革推动社会主义文化大发展大繁荣若干重大问题的决定，和胡锦涛总书记在中国文联第九次和中国作协第八次代表大会上的讲话，都从马克思主义文艺思想出发，在艺术实践规律的基础上提出并阐发了许多文艺理论的重大问题。而关于文艺家要承担历史责任、提倡文以载道、鼓励文艺原创、自觉抵制低俗之风等，都是当前深具实践意义与艺术学理意义的重大问题。如从理论与实际相结合的意义上加以深入领会，必然会有力推动社会主义文艺的大发展大繁荣的伟大战略目标的早日实现。