Developing Country Debt Research: Where Do We Go From Here?

Book reviewed in this article: Managing World Debt. Edited by S . Griffith-Jones International Capital Markets: Developments and Prospects. By an IMF Staff Team Multilateral Official Debt Rescheduling: Recent Experience. By P.M. Keller with N.E. Weerasinghe African Debt: The Case for Relief for Sub-Saharan Africa. By P.S. Mistry The International Debt Crisis of the Third World. By P. Nunnenkamp. The African Debt Crisis. By T.W. Parfitt and S.P. Riley Developing Country Debt: the Budgetary and Transfer Problem. By H. Reisen and A. van Trotsenburg Latin American Debt and the Adjustment Crisis. Edited by R. Thorp and L. Whitehead Voluntary Approaches to Debt Relief. By J. Williamson     

Applications and Implementation DECISION SUPPORT SYSTEMS: AN EMPIRICAL ASSESSMENT FOR DECISION MAKING

A laboratory experiment examined the effects of applying decision support system (DSS) technology to decision making in ill-structured problem environments under varying information conditions. Marketing executives participated in the experiment which investigated the effects of DSS availability, DSS training, and data availability on dependent variables that included: (1) the number of alternatives considered by a subject during decision making, (2) the period of time spent by a subject to complete the decision-making process, (3) the subject's perceived confidence in the decisions he or she had made, (4) the amount of data considered by a subject's during decision making, (5) the individual subject's decision processing, and (6) the subject's performance overall. Our results indicate that all three factors significantly affect the number of alternatives considered by subjects during the decision-making process. We therefore suggest that DSS training be coordinated with decision training in order to realize the potential of DSSs as described in the DSS literature.     

马克思的现代主义:一个辩护提纲

本文通过对马克思有关现代主义的观点进行深刻的文本学分析,得出如下结论:如果我们将自我决定和自由代理作为基本的人类能力,就没有理由解释为什么它只能得到个人主义的运用,确实有很多理由使我们认为在集体中它才能得到最好的实现,离开了这一点,全部的自由的自我决定便会停止.没有理由认为这种集体代理比个体选择缺少现代感.     

Complementary person-supervisor fit: An investigation of supplies-values (S-V) fit,leader-member exchange (LMX) and work outcomes

By applying the supplies-values (S-V) fit approach from the complementary person-environment (P-E) fit literature to the leader-employee perspective, and drawing upon social exchange theory, we examine how fulfillment of different work values is related to Leader-Member Exchange (LMX) and work outcomes. First, polynomial regression analyses combined with response surface analysis of data collected at two time points (N = 316) showed that LMX (Time 2) was higher the more the leader fulfills the employee's work values (Time 1). Second, LMX (Time 2) was higher when leader supplies (Time 1) and employee work values (Time 1) were both high than when both were low. Third, analyses of data from a sub-sample of matched leader-employee dyads (N = 140), showed that LMX (Time 2) played a mediating role on the relation between S-V fit (Time 1) and work outcomes (Time 2). Specifically, we found eight out of 10 relationships between S-V fit (Time 1) and leader-rated task performance and OCB (Time 2) to be fully mediated by LMX (Time 2). LMX (Time 2) partially mediated the relation between S-V fit (Time 1) and job satisfaction (Time 2) as only two out of five relationships were fully mediated.     

Pay-What-You-Want – Praxisrelevanz und Konsumentenverhalten

Pay-What-You-Want (PWYW) is a participative pricing mechanism which is characterized by the fact that consumers have maximum control over the price they pay. We discuss the business relevance of PWYW and extend the findings of Kim et al. (2009) using latent class regression. Two different classes can be identified and transaction prices are explained by psycho- and socio-demographics. The estimation of the parameters shows that the internal reference price is a good predictor for the prices in class 1, whereas in the 2nd class the level of fairness and satisfaction with the product positively affect the final transaction prices.     

Sequence Independent Lifting in Mixed Integer Programming

We investigate lifting, i.e., the process of taking a valid inequality for a polyhedron and extending it to a valid inequality in a higher dimensional space. Lifting is usually applied sequentially, that is, variables in a set are lifted one after the other. This may be computationally unattractive since it involves the solution of an optimization problem to compute a lifting coefficient for each variable. To relieve this computational burden, we study sequence independent lifting, which only involves the solution of one optimization problem. We show that if a certain lifting function is superadditive, then the lifting coefficients are independent of the lifting sequence. We introduce the idea of valid superadditive lifting functions to obtain good aproximations to maximum lifting. We apply these results to strengthen Balas' lifting theorem for cover inequalities and to produce lifted flow cover inequalities for a single node flow problem.     

Supervising Professional Work under New Public Management: Evidence from an ‘Invisible Trade’

This paper assesses the extent to which the new public management (NPM) project has succeeded in replacing the custodial mode of professional work supervision with a more bureaucratic approach. The paper conceptualizes the key components of each mode within two ideal types of professional work supervision. It then draws on findings from a study of local‐authority social service departments to consider current arrangements against these ideal type configurations. The findings demonstrate that elements of the bureaucratic mode have emerged unevenly. So far, they have not displaced the emphasis that the supervisors of professional work place on protecting autonomy and limiting management control systems. This suggests that custodial approaches to the supervision of professional work may be more resilient than has been assumed within previous analyses of NPM.     

On the <Emphasis Type="Italic">m</Emphasis>-clique free interval subgraphs polytope: polyhedral analysis and applications

In this paper we study the m-clique free interval subgraphs. We investigate the facial structure of the polytope defined as the convex hull of the incidence vectors associated with these subgraphs. We also present some facet-defining inequalities to strengthen the associated linear relaxation. As an application, the generalized open-shop problem with disjunctive constraints (GOSDC) is considered. Indeed, by a projection on a set of variables, the m-clique free interval subgraphs represent the solution of an integer linear program solving the GOSDC presented in this paper. Moreover, we propose exact and heuristic separation algorithms, which are exploited into a Branch-and-cut algorithm for solving the GOSDC. Finally, we present and discuss some computational results.     

Trade-offs in Online Purchase Decisions:: Two Empirical Studies in Europe

The Internet offers firms a new way to market their products and services and to interact with their end-consumers. While many firms have developed websites, very little is known about the trade-offs consumers are willing to make when making online purchases. With millions of websites competing for attention, online firms need to know in what way consumers make purchase decisions online. Consumers mainly evaluate websites on the basis of choice and convenience. In this paper, we present the results of two European studies that examine what consumers actually value in an online environment. In study 1, we assess choice-related trade-offs in terms of number of product categories, variety of products within a given category and product-related information. Conjoint analysis revealed that product-related information represents an important decision-making variable. In study 2, we assess convenience-related trade-offs in terms of logistics, fulfilment and security. Conjoint analysis revealed that fulfilment is the most important variable related to online handling. Finally, our study clearly indicates that firms have to distinguish different consumer segments on the basis of their preferences. This knowledge enables online firms to use their resources more effectively.