Virtual Community Use for Packaged Software Maintenance

In this study, we investigated the use of virtual communities for involving distributed customers in the maintenance of packaged software. On the basis of an empirical study, we suggest that virtual communities can be usefully leveraged for corrective, adaptive, and perfective software maintenance. Specifically, the virtual community allowed for quick discovery of bugs and a rich interaction between developers and customers in the categories of corrective and adaptive software maintenance. However, although contributing also to the perfective category of software maintenance, this was the category in which several customer suggestions for modification were actually ignored by the developers. This implies that community use is indeed beneficial for maintenance related to coding and design errors as well as for maintenance of an adaptive character. However, it has limitations when associated with major changes such as software functionality addition or modification as those experienced in the category of perfective maintenance.     

Dr. Martin Bronfenbrenner (1914-1997): Scholar, Critic, Cynic, and Comrade-in-Arms

ABSTRACT Professor Martin Bronfenbrenner's mark on the economics profession was significant and worth remembering. He touched the lives of many as a father, cousin, teacher, scholar, expert referee, colleague, and judge of important contemporary debates. Of special interest is his unique personality. He was a specialist in self-effacement, peppered with liberal shakes of cynicism and sarcasm. Despite all this, he managed to win the respect and hearts of individuals on several continents and across several generations. This essay brings a small but diverse part of the story together in one place.     

Belief-free price formation

We analyze security price formation in a dynamic setting in which long-lived dealers repeatedly compete for the opportunity to trade with short-lived retail traders. We characterize equilibria in which dealers’ pricing strategies are optimal irrespective of the private information that each dealer may possess. Thus, our model’s predictions are robust to different specifications of the dealers’ information structure. These equilibria reconcile, in a unified and parsimonious framework, price dynamics that are reminiscent of well-known stylized facts: excess price volatility, price to trading flow correlation, stochastic volatility and inventory-related trading.     

Why does on-farm storage fail to mitigate price volatility?

We analyze the role of farm stock management on price volatility under liquidity constraints and heterogeneous price expectations. In commodity markets, speculative behaviors by stockholders tend to reduce price volatility, but this is not the case in certain agricultural markets, where speculation by farmers regarding decisions to sell or store grain is subject to liquidity constraints and heterogeneous price expectations. Like stockholders, most farmers sell grain if they expect a price drop in the near future, but unlike stockholders, they are not necessarily able to purchase grain if they expect a price increase in the next period. Heterogeneous price expectations can also lead to suboptimal storage decisions, further increasing price volatility. For these reasons, the storage management behavior of farmers often fails to mitigate price drops in the way that speculation by stockholders does. We merge historical data on maize prices and household storage collected in Burkina Faso in order to build a dynamic panel over the 2005–2012 period. We show that carryover from one season to the next is associated with unexpected price drops during the preceding lean season and that carryover is associated with more frequent unexpected price drops following the subsequent post‐harvest season.     

The changing nature of labour regulation: the distinctiveness of the National Agreement for the Engineering Construction Industry

The article addresses the changing nature of labour regulation through analysis of the National Agreement for the Engineering Construction Industry, originating in 1981. It shows how multiple spatial regulatory scales, the changing coalitions of actors involved, employer and client engagement and labour agency have been critical to National Agreement for the Engineering Construction Industry's survival.     

Farm-level determinants of product conversion: Organic milk production

We investigate the role of technology in the decision of dairy farmers to convert to organic production methods. We measure the characteristics of the production technology using data from the USDA Agricultural Resource Management Survey and a recently developed functional form that allows for a global approximation to the unknown distance function without compromising approximation at the data boundaries. Conventional dairies with lower technical efficiency, higher returns to scale, and the ability to easily substitute away from restricted inputs are more likely to convert to organic production. Findings suggest further consolidation in the conventional industry as low-performing farms exits for the organic industry.     

Born to be alive? The survival of innovative and non-innovative French micro-start-ups

Based on French data describing the characteristics of entrepreneurs and their projects, this article studies the differences between the determinants of survival for innovative and non-innovative micro-enterprises. We show that the survival of innovative and non-innovative enterprises is linked to personal criteria such as age, gender, belonging to a minority, professional experience and financing sources. Our results also highlight the positive effect of not being alone in the start-up design phase, whereas being involved in a business network after the start-up period has no significant influence. The survival time of innovative enterprises, which is significantly lower than that of the non-innovative ones, seems adversely influenced by the entrepreneur’s previous management experience. Finally, when considering both innovative and non-innovative start-ups, there appears to be a type of “pecking order” as bank financing has a much more positive effect on survival than a personal one, although when focusing solely on innovative ones this difference does not exist.     

International capital markets and open‐economy macroeconomics

Abstract

The standard open‐economy model on which the Bretton Woods macroeconomics is based takes into account neither the systemically fragmented nature of international capital markets nor the institutional relationship between savings and investment in semi‐industrial economies. This paper suggests that a more realistic approach to these structural features, possibly along the lines suggested by recent “new‐Keynesian” theories of market failure, would yield a model of macroeconomic behaviour which emphasizes investor uncertainty and vulnerability to external shock. The policy implications have interesting parallels with Keynes's own views on stabilization.     

Negotiating ‘solidarity’ and internationalism: the response of Polish trade unions to migration

In the context of massive outward migration after Poland's accession to the EU in 2004, this article explores the possibilities for cross‐border collaboration by Polish trade unions. The findings are based on interviews with the two main trade union/trade union federations, Solidarity and Ogolnopolskie Porozumnie Zwi?zków Zawodowych: All‐Poland Alliance of Trade Unions, at national, regional and sectoral levels. Examining the issues and challenges faced by Polish trade unions in terms of loss of membership and social capital, the article also evaluates the significance of Poland's status as a country of some inward migration. It is argued that cross‐border trade union collaboration has become an even more urgent project as the economic crisis intensifies competition in the labour market and increases the potential for xenophobia.