Nonparametric Evaluation of Economies of Scope in the Context of Technical Efficiency: The Case of Rice and Vegetable Farms in Korea

This paper provides a nonparametric evaluation of economies of scope in the context of technical efficiency allowing for non‐convexity, with an application to Korean rice and vegetable farms. Relying on non‐parametric‐free disposal hull and data envelopment analysis approaches and input–output data for rice and vegetable farms from the Korea Farm Household Economy Survey data collected in 2007, this article examines technical inefficiency and its decomposition under non‐convexity and convexity. Empirical measures of technical inefficiency and its decomposition results are provided, with a focus on a component of technical inefficiency associated with economies of scope (i.e. diversification benefits) under non‐convexity in production technology. The decomposition measures of technical inefficiency include pure technical inefficiency, size inefficiency and diversification inefficiency. The results provide empirical evidence supporting size‐dependent diversification strategies, where benefits of diversification are larger for small farms on average compared to those of large farms.     

Export diversification and real exchange rate in emerging Latin America and Asia: A South–North vs. South-South decomposition

The present paper examines the directional causality between export diversification and real exchange rate in the middle-income countries of Asia and Latin America over the period from 1995 to 2013. Additionally, we investigate asymmetries in the causality issue by examining the direction across trading partners.

Our empirical results show that there is a two-way causality between the two variables when we look at the sample as a whole. A causal link running from the real exchange rate to export diversification is consistent with the standard literature but it is not systematic at all. The reverse causation is very appealing and challenges the standard argument on exchange rate determination. When the causality issue is investigated by treating export markets differently, our findings at the aggregate level are confirmed in exports destined for the advanced countries. The analysis for ‘South-South’ trade only shows a unidirectional link from the real exchange rate to changes in export diversification. The same tests performed at the individual countries level reveal a heterogeneous causality across trading partners.     

The strategic evolution of large US law firms

In recent years, large US law firms have been undergoing significant changes. Most have switched from a professional model (P2 form) to a corporate business model, employing competitive strategies and a profit orientation. As the market for corporate legal services became more competitive, many large US law firms began to diversify the services they offer and expand their operations into new geographic regions of the country and into international markets. They even engaged in acquisitions and learned to manage and leverage their critical resources, human capital and relational capital. As a result, most of these law firms have added more professional management. All in all, the services law firms offer and the rivals with which they must contend have changed substantially over the last 15 years.     

基于多元化战略的集团公司销售协同探讨

本文认为,多元化战略是很多大型集团公司采用的经营方式,也是实现协同效应的重要方式,同时协同效应是实施多元化战略的重要动因。销售协同的关联存在于销售活动价值链的各个环节,且相关多元化公司更容易找到这种关联。不同协同方式各有特点及适用条件,公司应考虑其产品类型、经营区域、目标客户及公司战略等因素来选择恰当的方式。文章提出,在实现销售协同的过程中应注意以下问题:不同协同方式如品牌延伸、人员共享与跨部门使用、销售基础设施共享、共享物流、建立销售子公司等有各自的优劣势和适用条件。在实施销售协同过程中应该注意由高层推动与设定共同战略目标,创造良好的环境氛围,选择恰当的协同方式,建立有效的评价激励制度等方面的问题。     

基于核心能力的企业成长研究

随着Internet等信息技术的广泛应用 ,经济一体化和竞争全球化时代的到来 ,竞争的强度、范围、动态性都在不断加强 ,企业的成长乃至生存都越来越依赖于企业的核心能力。核心能力是企业可持续竞争优势的源泉 ,是企业可持续发展的恒久动力 ,是企业成长战略选择的依据。     

面向应用的《电子商务概论》课程教学模式研究

根据"电子商务概论"课程的特点,基于专业定位,提出了新型的模块化教学模式,重在培养学生解决实际问题和创新的能力,实现课程与社会实际需求的对接。     

Crop Insurance as a Strategy for Adapting to Climate Change

Financial insurance for extreme events can play an important role in hedging against the implications of climate change. This paper combines a comprehensive estimation strategy and a unique panel dataset to study the role of financial insurance in farmers' welfare under uncertainty. Data are drawn from a large Italian farm panel dataset. We find that (i) demand for insurance products is likely to increase in response to climatic conditions, and (ii) that the use of insurance reduces the extent of risk exposure. We also find that farms growing more crops are less likely to adopt the insurance scheme. This confirms what is found in the theoretical literature. Crop diversification can be a substitute for financial insurance in hedging against the impact of risk exposure on welfare.     

事务所多元化经营与生产效率——基于事务所的平衡面板数据

本文运用2006年至2010年45家事务所的平衡面板数据,基于Malmquist生产效率指数计算事务所的动态生产效率,并进而针对事务所多元化经营与生产效率的内在关联展开分析.研究发现,由于纯技术效率变化的增长幅度较小,注册会计师行业生产效率提升的主要驱动因素是技术水平进步和规模效率进步;执行多元化经营的事务所相比于仍然仅专注提供传统审计业务的事务所,获得了更大的技术进步、更高的规模效率改善,以及更高的生产效率进步;进一步区分不同类型事务所,本土大型事务所的“先动者”没有获取更大的生产效率进步,及相应分解项的改善,本土事务所的“早期从众者”则不仅获得了更高的生产效率进步,也获取了更大的技术进步和更高的规模效率改善.     

一般均衡下的金融市场流动性黑洞研究

本文在一般均衡框架下建立了考虑投资者多样化程度,投机交易者比例以及宏观货币政策稳定性三因素的两期交易模型,得到了金融市场受到流动性冲击后可能出现的三种均衡状态。当流动性冲击加大时,市场在一定条件下无法找到合理的出清价格而出现大幅下跌从而引发流动性黑洞事件。研究表明:投资者越是多样化、投机交易者比例越小、宏观货币政策带来的流动性冲击越小,市场出现极端流动性黑洞的可能性就越小。     

Temporary contracts and young women in Spain

In this article we analyse the determinants of temporary employment through a balanced panel of workers from 1995 to 2000. First, we estimate a panel with 1267 individuals with ages ranging from 16 to 65 years. We obtain that the probability of having a temporary contract increases for people younger than 46 years old. Secondly, we estimate separately the sample of people younger than 46 years old and we obtain that the probability of temporality increases for young people with university level of education. More interestedly, the probability of being in a temporary contract is smaller for young women that for young men in Spain.