Chance Constrained Programming Formulations for Stochastic Characterizations of Efficiency and Dominance in DEA

Pareto-Koopmans efficiency in Data Envelopment Analysis (DEA) is extended to stochastic inputs and outputs via probabilistic input-output vector comparisons in a given empirical production (possibility) set. In contrast to other approaches which have used Chance Constrained Programming formulations in DEA, the emphasis here is on joint chance constraints. An assumption of arbitrary but known probability distributions leads to the P-Model of chance constrained programming. A necessary condition for a DMU to be stochastically efficient and a sufficient condition for a DMU to be non-stochastically efficient are provided. Deterministic equivalents using the zero order decision rules of chance constrained programming and multivariate normal distributions take the form of an extended version of the additive model of DEA. Contacts are also maintained with all of the other presently available deterministic DEA models in the form of easily identified extensions which can be used to formalize the treatment of efficiency when stochastic elements are present.     

Ten years after: Interference of hospital slack in process performance benefits of quality practices

We investigate the long-term relationship between an organization's quality management practices and process-level performance. Further, we examine whether availability of organizational slack over the study interval interferes with the relationship between quality practices and process performance. Organizational slack consists of the available and accessible resources in an organization; we focus here on unabsorbed slack in the form of financial resources. We investigate the quality practices of U.S. general acute care hospitals, measured by their depth of implementation of practices characterizing a total quality management system, and use them to predict process performance related to four medical conditions. Analysis reveals differing effects that are dependent on hospital slack conditions. In hospitals with high slack, quality practices significantly predict three of four studied process performance measures. In contrast, in hospitals with low slack, quality practices predict only one of the four process performance measures, while other factors outweigh the effects of quality practices. This study lends support to management taking a long-term perspective related to implementation of quality management systems, and highlights the relevance of slack conditions in garnering the benefits of such systems.     

Behavioural Orientations of Non‐Profit Boards as a Factor in Entrepreneurial Performance: Does Governance Matter?

Relatively little is understood about factors triggering entrepreneurial behaviour within organizations not driven by profit motives. Governance plays an important role in non‐profits, particularly boards of directors. Integrating resource‐based theory and entrepreneurial orientation research, we examine the influence of non‐profit boards as strategic resources shaping the organization's entrepreneurial orientation and performance. In particular, we focus on the non‐profit board's underlying behavioural orientations, or the extent to which the board is strategic, activist, conservative, and cohesive. Findings from a cross‐sectional survey on arts and culture organizations demonstrate that three of these behavioural orientations impact levels of entrepreneurship occurring within non‐profits. Higher levels of entrepreneurship affect social performance, but not financial performance.     

Status Report: The Corporation and Trends in Family Issues

The two-paycheck family is making new demands on the corporation. With both parents involved in family and work life, the corporation, if it wants to keep these professionals in the workforce, must consider new, flexible approaches to management. Under review are policies concerning parental leave, child care, flexible work schedules, cafeteria-style benefits, and a new corporate consideration of the importance of family life. At this time, it appears that the greatest impetus will come from the courts and Congress, with family-oriented legislations being considered for the presidential year of 1988.     

Contradictions in human resource commitment and employment-at-will policies

Employment in the U.S. appears to be subject to two broad, conflicting influences. Foreign competition and declining productivity have resulted in the suggested development of a commitment strategy in employment relations. Current administration policy towards employment, it is argued, combined with prevailing, notions of employment-at-will are in essential, tension with international standards of employment security and the content of the new industrial relations policies advocated by human resource practitioners and researchers.     

Farm Poverty and Safety Nets

Farm families with incomes below the poverty line are far less likely than wealthier farmers to receive farm support payments. Using data from the 1989–2004 Current Population Survey, we find that poor farm families are also not participating in other assistance programs. Controlling for other factors, eligible farm families have substantially lower participation rates in the Food Stamp Program and in Medicaid than eligible nonfarm families. Removing farm safety net program payments would increase the number of farmers eligible for these programs but, in the absence of behavioral changes, would only lead to small increases in the number of recipients.     

Fragmentation and Embeddedness: An Alternative Approach to the Analysis of Rural Financial Markets

Political economy approaches to analysing the efficiency of rural financial markets have focused on the role of power and social relations. Neo-classical institutional economics, on the other hand, has used information and transaction costs to explain performance. Recognizing the limitations of both approaches, this paper presents an alternative that focuses on the institutional form of financial intermediaries, that is, the governance structure of rules, monitoring and enforcement mechanisms that enable them to operate. This structure is supported by both formal and informal rules, norms and sanctions. As a result, the ways in which transaction costs are affected by governance structures can be identified and the embeddedness of financial intermediaries in social relations can be theorized. The application of this approach in Central Kenya demonstrates the insights that it offers into explaining borrower preferences in the financial market.     

Environmental protection and management: A water pollution case study within the Greater Blue Mountains World Heritage Area,Australia

The Grose River is contained almost entirely within a World Heritage Area. While sewage pollution in the area has been addressed, pollution at damaging levels continues from a disused coal mine, closed in 1997. Despite some surface rehabilitation, no action has occurred to remediate zinc polluted waters emanating from the mine. We examine the historical regulation and management of the Australian Commonwealth and New South Wales governments and highlight gaps in both regulatory systems. We conclude that there is an urgent need to improve regulation of water pollution, mining and management of the environment in highly valued world heritage areas.     

On Choosing Among House Price Index Methodologies

This paper compares housing price indices estimated using three models with several sets of property transaction data. The commonly used hedonic price model suffers from potential specification bias and inefficiency, while the weighted repeat-sales model presents potentially more serious bias and inefficiency problems. A hybrid model combining hedonic and repeat-sales equations avoids most of these sources of bias and inefficiency. This paper evaluates the performance of each type of model using a particularly rich local housing market database. The results, though ambiguous, appear to confirm the problems with the repeat sales model but suggest that systematic differences between repeat-transacting and single-transacting properties lead to bias in the hedonic and hybrid models as well.