The competition number of a graph with?exactly?two?holes

Given an acyclic digraph D, the competition graph C(D) of D is the graph with the same vertex set as D and two distinct vertices x and y are adjacent in C(D) if and only if there is a vertex v in D such that (x,v) and (y,v) are arcs of D. The competition number κ(G) of a graph G is the least number of isolated vertices that must be added to G to form a competition graph. The purpose of this paper is to prove that the competition number of a graph with exactly two holes is at most three.     

Re-aligning the Stakeholders in Management Research: Lessons from Industrial, Work and Organizational Psychology

The publication of the Starkey and Madan (2001) report represents a timely and valuable contribution to an ongoing debate across a range of applied disciplines, concerning the nature and purpose of social research. The call for stakeholder alignment, culminating in the production of new knowledge that is both theoretically and methodologically rigorous on the one hand, and socially relevant on the other, is, in our view, to be greatly welcomed. However, the Mode 2 approach advocated by Starkey and Madan will not satisfy these fundamental requirements. Drawing on recent analyses of the nature, causes and consequences of the academic-practitioner divide in the subfield of industrial, work and organizational psychology, we offer an alternative, four-fold taxonomy of the varieties of managerial knowledge. Within our alternative framework, research that is low on rigour but high on relevance (a likely consequence of the wholesale adoption of a Mode 2 approach) is characterized as 'Popularist Science'. 'Pedantic Science', by contrast, is high on rigour but low on relevance, while 'Puerile Science' meets neither requirement. Only 'Pragmatic Science' will meet the twin imperatives of rigour and relevance. Whilst it is highly desirable that Pragmatic Science should dominate the management field, there are considerable barriers that impede its widespread adoption at the present time, not least the limited availability of researchers who possess the requisite sociopolitical and methodological competencies. The immediate imperative that has to be addressed, therefore, is the question of how best to close this competency gap, a fundamental precondition of stakeholder realignment.     

Explaining microfinance's resilience: the case of microfinance in Australia

ABSTRACT

Microfinance has been unsuccessfully deployed as a poverty reduction strategy in the Global South. However, despite advocates acknowledging this shortcoming, the sector continues to grow. Moreover, over the past decade it has expanded its geographic scope, targeting poor communities in the Global North under the banner of financial inclusion. This article investigates the growth of the Australian sector. Analyzing the impacts of reforms to Australia's social security system alongside the political economy of the microfinance industry, it argues the debtfare state in Australia has provided fertile ground for microfinance's expansion. Documenting the advocacy strategies and tools to target vulnerable communities used by microfinance organizations and corporate partners, it charts how government support and subsidies have created a favourable regulatory environment, driving the sector's growth. This has benefitted these coalitions while displacing other forms of social security, despite the lack of robust evidence demonstrating microfinance's benefits for the poor.     

Communication rights and disability online: Policy and technology after the World Summit on the Information Society

This paper reviews and analyses the topic of disability, communication rights, digital technology, and policy. In particular, it focusses on the new ways that the human right to communicate has been articulated via international law and policy – especially at the World Summit on the Information Society (WSIS 2003–2005 and WSIS +10 in 2015) as well as the United Nations Convention on the Rights of Persons with Disabilities.     

Identity politics and democratic transitions in Latin America: (Re)organizing women's strategic interests through community activism

Theory and Society -     

Hypothesis Testing in Two-Stage Cluster Sampling

Correlated observations often arise in complex sampling schemes such as two-stage cluster sampling. The resulting observations from this sampling scheme usually exhibit certain positive intracluster correlation, as a result of which the standard statistical procedures for testing hypotheses concerning linear combinations of the parameters may lack some of the optimal properties that these possess when the data are uncorrelated. The aim of this paper is to present exact methods for testing these hypotheses by combining within and between cluster information much as in Zhou & Mathew (1993).     

新闻框架的倾向性研究

美国媒介的自由主义神话使人们常常认为美国新闻记者是监督政府、捍卫民权的领袖,然而,这种媒介自由主义偏见却受到越来越多的质疑。美国主流媒体对儿童医疗保险计划报道的个案显示,新闻框架存在显著的倾向性。这种倾向性不仅表现为新闻偏见的简单正负二分,更彰显于谁是政策受益者、推理基础何在以及争论复杂性如何等三个不同的信息维度。美国政治文化中的个人主义,相对单纯、政治冷漠的受众,媒介对官方信息来源的依赖,以及媒介对于那些有权操纵结果的政府官员的偏向,使得新闻报道并没有像人们想象的那样站在公众一方。新闻倾向性成为新闻决策偏见和官方新闻管理技巧之间互动的产物。