Thematic content analysis using supervised machine learning: An empirical evaluation using German online news

In recent years, two approaches to automatic content analysis have been introduced in the social sciences: semantic network analysis and supervised text classification. We argue that, although less linguistically sophisticated than semantic parsing techniques, statistical machine learning offers many advantages for applied communication research. By using manually coded material for training, supervised classification seamlessly bridges the gap between traditional and automatic content analysis. In this paper, we briefly introduce the conceptual foundations of machine learning approaches to text classification and discuss their application in social science research. We then evaluate their potential in an experimental study in which German online news was coded with established thematic categories. Moreover, we investigate whether and how linguistic preprocessing can improve classification quality. Results indicate that supervised text classification is generally robust and reliable for some categories, but may even be useful when it fails.     

Identifying and characterising price leadership in British supermarkets

Price leadership is a concept that lacks precision. We propose a deliberately narrow, falsifiable, definition then develop it, illustrate its feasibility and test it using the two leading British supermarket chains. We find both firms engaging in leading prices upward over a range of products, with the larger being initially more dominant but the smaller increasing leadership activity to take overall leadership over time. However, more price leadership events are price reductions than price increases, consistently led by the smaller firm. Nevertheless, the increases are of larger monetary amounts than the falls, so average basket price increases over time.     

The use of accounting information for the valuation of dual-class shares listed on China's stock markets

This study examines whether accounting data are useful in helping explain the market value of listed firms in China. In particular, we focus our investigation on companies that have issued dual-class shares sold to domestic investors (A-shares) and foreigners (B-shares). Domestic accounting standards (DAS) are used for the financial statements of A-shares while international accounting standards (IAS) are used for B-shares. Our results show that IAS earnings information is incorporated in the prices and returns of B-shares. In contrast, A-share investors appear to place most weight on DAS earnings and only recently has there been an association with IAS information. Book values are value relevant for B-share prices but not for A-share prices. Sensitivity tests show that accounting information is more likely to be impounded in share prices and returns for firms with high individual (i.e. non-government) share ownership. Based on our results, we argue that China's move towards the adoption of IAS will be useful for A-share investors, especially in light of the country's recent accession to the WTO and the consequent opening-up of the economy.     

Perceived effect of a salesperson's stigmatized appearance on store image: an experimental study of student's perceptions

The Perception of a specific stigma, obesity, and its influence on store image was studied. Previous studies have acknowledged the role salespeople play in the perception of a store's image, but no previous studies have specifically focused on the influence of the physical appearance of sales personnel on store image. The results of an experiment that examined students' perceptions of salespersons' appearance showed that, if a salesperson was described as obese, then the store was perceived as having a poorer image and as being less successful, regardless of the sex of the salesperson or the type of store. The implications of these findings for retailers are discussed in light of the Americans with Disabilities Act and recent legal discussion concerned with protecting physically stigmatized workers.     

Operational risk and equity prices

We use an empirical model to categorize firms into portfolios based on operational risk. Using these portfolios, we show that a strategy of buying firms in the highest decile of operational risk and shorting firms in the lowest decile of operational risk earned a positive but insignificant risk-adjusted average return of 0.72% per month from 1990 to 2000. However, from 2001 to 2010, the same strategy earned a significantly negative risk-adjusted average return of ?1.50% per month. This change occurred during a time characterized by an increasing number of high profile operational losses and regulatory changes surrounding operational risk.     

Why Marx Neither Has Nor Needs a Commodity Theory of Money

This paper argues, contrary to the standard interpretation, that money in Marx's theory is tied neither to bullion nor to any commodity basis. It is rather the sole social form of value autonomous from use-value. This is demonstrated by reference to Marx's account of the social functions of money, and by showing that to subsume 'money' under 'commodity' commits a category mistake within Marx's system. My argument is conceptual rather than historical. It seeks to locate, not to deny, the role of 'gold' in Marx's monetary theory. It has relevance to contemporary debates about the need for some new 'gold-standard' to sustain the international monetary system.     

Inverting the Classroom: A Gateway to Creating an Inclusive Learning Environment

Asserting that “elementary teachers are going to become increasingly involved with economic concepts, and that economic education at the elementary level is at an important developmental state,” Professor Ramsett explains how economics can be included in the elementary school curriculum without taking other subject matter out, and suggests approaches to the training of elementary teachers. He describes some innovative techniques being used at North Dakota's New School of Behavioral Studies, illustrates methods for motivating pupils, shows how economic concepts can be related to other subjects (such as arithmetic), and calls for cooperation between educators and liberal arts faculties in preparing the elementary teacher.     

Examining the link between skill shortages,training composition and productivity levels in the construction industry: evidence from Northern Ireland1

One of the key questions in international research addresses the tensions arising from international co-ordination and local adaptation of multinational companies' (MNCs) policies and practices. The German business system encourages MNCs to have a long-term, high-investment orientation, to practise intensive management-labour cooperation and to pursue developmental human resource management (HRM). This study analyses six major German MNCs operating in both Britain and Spain and outlines their reasons for the international co-ordination of HRM. It addresses the issue of central control versus local adaptation by looking at the transfer of German HR policies and practices. The cases show that the MNCs were able to preserve substantial ‘German-ness’ abroad. However, the results of the transfer of German HRM were not always positive due to a variety of endogenous and exogenous causes. Barriers to transfer from institutionally strong to weak environments are discussed and possible internal HR approaches are suggested to counterbalance the national business system effect. Their success will depend on head office-foreign affiliate relations shaped by factors such as cross-border communication, trust and power distribution.     

Fiscal implications of climate change

Climate change is an externality problem—so the challenges that arise in limiting it and dealing with the effects that remain are largely fiscal. The structure of the problem, however, and the uncertainty which surrounds it, make the design of proper policy responses particularly complex. This paper provides a primer on the fiscal implications of climate change, the aim being to provide a (reasonably) quick and comprehensive overview of the main analytical issues and lessons learned.