Leadership effectiveness and motivation in Africa and the African Diaspora (LEAD): An introduction

The LEAD research project was developed in order to broaden management research in areas such as Africa. This special issue brings together the early findings of the research team. The present article reviews the literature and discusses the importance of understanding organizational leadership and motivation in under researched areas of the world. We explain the use of both emic (Delphi Technique and focus groups) and etic (large scale survey) research and describe the LEAD project and methodology in detail. Here we advocate the use of emic and etic research, and also consider the practical realities of using such approaches. Copyright © 2014 ASAC. Published by John Wiley & Sons, Ltd.     

Application of the Delphi Technique to Rural Tourism Project Evaluation

This paper details the merit, challenges and shortcomings of the Delphi Technique as a means of obtaining data for a project aimed at formulating an evaluation framework for application in the development and management of rural tourism projects. Participation in the Delphi Survey was sought from expert panellists in both South Africa and Britain from four different stakeholder sectors of expertise – academics, the public sector, consultants and the operational sector. No single research method could have elicited the comprehensive information sought by this study. Whilst the Delphi Technique was considered the most effective means of soliciting group input and opinion forming by a panel of experts utilising a manageable method, it was unable to facilitate the in-depth discussion and enriched text required to gain a fuller understanding of significant and contentious issues.     

钢塑复合管的施工工艺

钢塑复合管既有塑料管的耐腐蚀性、钢管的抗压强度,因而在建筑、石油、化工等领域得到广泛使用。根据资料及其在实际工程中的应用情况,着重介绍了钢塑复合管的优良性能、施工工艺及施工过程中应注意的问题。     

中国汽车产业自主创新主体关系研究

本文根据技术创新理论和纳什均衡理论,运用"互动聚核式"模型和博弈论研究技术创新主体间的关系,得出高校科研机构、企业和政府相互联系,密不可分。在此基础上,对我国汽车产业技术创新主体形成和谐关系更好地促进自主创新,提出了一些相关政策和建议。     

我国污染密集型工业品贸易的环境效应研究

在拓展现有贸易环境效应分解模型的基础上,明确了技术效应的重要性,并以我国污染密集型工业品贸易为例开展实证研究。我国此类进、出口贸易在实现正向技术效应的条件下均可有利于国内环境改善,但出口比进口实现正向净效应的难度较大、正向净效应也较小。净效应的大小因进、出口过程中清洁生产技术溢出渠道的差异以及产业自身技术水平、R&D及人力资本存量等的不同而异。     

Biases in self-reported food insecurity measurement: A list experiment approach

Measuring the incidence and intensity of food insecurity has long been a challenge due to its conceptual and practical complexity. Several scholars have proposed objective and subjective measurements to monitor or evaluate food in(security) programs. While the objective measurements such as food caloric intake and food expenditure are data demanding and costly, the subjective measurements such as experience-based food insecurity scales that use direct responses to food shortage questions can be prone to biases and misreporting due to respondents’ unobservable economic and social desirability concerns. This paper reports the biases when food shortage is asked through direct questions and indirect interviews using a list experiment approach—an approach widely used to elicit the true responses of respondents for a sensitive question. The list experiment was conducted on four selected self-reported food insecurity survey questions which represent both the availability (incidence) and access (intensity) dimensions of food security. The sample households were drawn from two districts in Northern Ethiopia where households are chronically food insecure and several projects have been implemented. The results indicate the existence of significant bias in self-reported food insecurity responses when implemented through direct interviews. The results also show that the biases, particularly the ones related to incidence questions, have led to erroneous conclusion about the impact of a food security program—the Ethiopian Household Asset Building (HAB) program. Based on the findings, the paper highlights possible options and precautionary actions for measuring food insecurity using self-reported questions.     

新型二次雷达多媒体演示系统的开发制作

<正> 亚洲——太平洋经济合作组织(APEC)自成立以来,在许多领域取得了积极的合作成果。本文仅就APEC的金融一体化和金融合作略提管见。     

论西欧在国际直接投资格局中的地位变迁

二次大战后,西欧曾以其坚实雄厚的工业基础、训练有素的劳动力技能以及相对稳定的政治环境而一度成为国际直接投资的热点。特别在1958年欧洲经济共同体成立后,外国企业蜂拥而至,纷纷到西欧投资设厂。以美国为例,1950年底,在美国对外直接投资累计金额中西欧仅占14.7％,为17.33亿美元,远远落后于拉丁美洲(占37.7％,44.45亿美元)和加拿大(占30.4％,35.79亿美元)。但到1962年底,美国在西欧的直接投资累计额已超过拉丁美洲,1969年底超过了加拿大。到七十年代中期,美国在西欧的直接投资累计额高达606亿美元,是美国在加拿大直接投资额的1.71倍,在拉美直接投资额的2.19倍。然而从七十年代中期起。     

盒式录像机中的画中画系统

本文提出了一种使用双端存储器、可同时显示磁带和电视广播图象的新的画中画系统.     

家用录像机的现状和发展趋势

本文综述了家用录像机的技术进展及市场现状。给出了录像机的调频信号传输模型,进而指出了录像机中的主要技术问题。最后概述了家用录像机的发展趋势、