Live Broadcasting,Gate Revenue,and Football Club Performance: Some Evidence

This paper presents new evidence concerning the main argument of the English Premier League for collective arrangements in selling television broadcast rights. Matches that are broadcast live on television can be considered as a substitute for watching at the stadium. New panel-data show that broadcasting live has a small negative effect on gate revenue for the best performing clubs and a much larger effect for the worst performing clubs. However, the marginal cost is outweighed by the marginal revenue, concluding that restrictions on quantity stemming from collective arrangements are detrimental to the consumers, broadcasters, and clubs themselves.     

C. L. Bragg, Charles D. Ross, Gordon A. Blaker, Stephanie A. T. Jacobe, and Theodore P. Savas. Never for Want of Powder: The Confederate Powder Works in Augusta, Georgia

Never for Want of Powder is a lavishly illustrated history ofthe Confederate gunpowder factory in Augusta, Georgia that operatedbetween 1862 and 1865 and furnished the South's armies withover three million pounds of explosives. Published with supportfrom the Watson-Brown Foundation, Inc., of Thomson, Georgia,the book describes how Colonel George Washington Rains, an engineerand West Point graduate, built a successful munitions factoryin an agricultural region dominated by a plantation economy.     

Espoused drum-buffer-rope flow control in serial lines: A comparative study of simulation models

This paper documents an investigation of drum-buffer-rope (DBR) scheduling and flow control methodology in single-product serial production lines. In particular, DBR flow control is reviewed and the importance of correctly representing this type of flow control mechanism in serial lines is discussed. Departures from valid DBR conceptual and simulation modeling are illustrated. It is shown that the model of a previously published paper is a push system not a DBR system, and that related conclusions regarding protective capacity and constraint location are unsupported. Correct modeling of DBR flow control is shown using discrete simulation experiments that compare the DBR model and a similar push model. Suggestions for additional research are offered.     

Modeling total cholesterol as predictor of mortality: the low-cholesterol paradox

Elevated total cholesterol is well-established as a risk factor for coronary artery disease and cardiovascular mortality. However, less attention is paid to the association between low cholesterol levels and mortality--the low cholesterol paradox. In this paper, restricted cubic splines (RCS) and complex survey methodology are used to show the low-cholesterol paradox is present in the laboratory, examination, and mortality follow-up data from the Third National Health and Nutrition Examination Survey (NHANES III). A series of Cox proportional hazard models, demonstrate that RCS are necessary to incorporate desired covariates while avoiding the use of categorical variables. Valid concerns regarding the accuracy of such predictive models are discussed. The one certain conclusion is that low cholesterol levels are markers for excess mortality, just as are high levels. Restricted cubic splines provide the necessary flexibility to demonstrate the U-shaped relationship between cholesterol and mortality without resorting to binning results. Cox PH models perform well at identifying associations between risk factors and outcomes of interest such as mortality. However, the predictions from such a model may not be as accurate as common statistics suggest and predictive models should be used with caution.     

Causality: a Statistical View

Statistical aspects of causality are reviewed in simple form and the impact of recent work discussed. Three distinct notions of causality are set out and implications for densities and for linear dependencies explained. The importance of appreciating the possibility of effect modifiers is stressed, be they intermediate variables, background variables or unobserved confounders. In many contexts the issue of unobserved confounders is salient. The difficulties of interpretation when there are joint effects are discussed and possible modifications of analysis explained. The dangers of uncritical conditioning and marginalization over intermediate response variables are set out and some of the problems of generalizing conclusions to populations and individuals explained. In general terms the importance of search for possibly causal variables is stressed but the need for caution is emphasized.     

MillicentCox, LLC

Millicent Cox is the Principal Economist of MillicentCox, LLC in San Diego. Prior experience includes positions with the University of California at San Diego, the Rand Corporation, and the University of Southern California. She holds a Ph.D. from the University of Southern California, an M.A. from the Claremont Graduate School, and a B.A. from New York University. JEL Classification M210, R230     

Embedding employee involvement and participation at work

Most quantitative studies analysing the nature and impact of employee involvement and participation (EIP) have used data that differentiate between its absence and presence. However, the application of EIP practices varies substantially, and impact may depend on how embedded EIP is at workplace level. Developing the concept of ‘embeddedness’ as a combination of measures of the breadth and depth of EIP practices, we use WERS98 to examine the impact of EIP on employee perceptions. Our results show support for propositions that greater breadth and depth of EIP practices are associated with higher levels of organisational commitment and job satisfaction.     

Endometriosis,an unknown entity: the consumer's perspective

This paper reports the findings of a consumer‐driven investigation conducted by the Centre for Clinical Nursing Research at Epworth Hospital in conjunction with the Endometriosis Association (Victoria, Australia) aimed at identifying the information and support needs of women experiencing endometriosis. Women's experiences of endometriosis and laparoscopy were examined. A questionnaire was designed to explore women's experiences of, and informational need for, the four categories of: diagnosis of endometriosis, endometriosis, laparoscopy and managing at home. A total of 465 women who had a positive diagnosis of endometriosis, including patients at the Epworth Endometriosis Centre and members of the Endometriosis Association, were included. The data were analysed in terms of frequency of responses and themes that arose from the research. Five main themes consistently emerged from the overall analysis of the questionnaire; these included: lack of communication, no‐one listens, the emotional turmoil, expressions of gratitude to the Endometriosis Association and being young and helpless. Also identified was a lack of understanding of endometriosis and laparoscopy, on behalf of both the patient and the practitioner, which has led to communication of misinformation, extended physical pain and emotional distress. Based on these findings, recommendations were made for education strategies to be focused towards increasing awareness of endometriosis and for information to be disseminated using the preferred printed format and to be made available from gynaecologists, hospitals and schools. Through consumer participation, the information obtained in this study is of benefit to all women who come in contact with endometriosis by (a) validating women's experiences of endometriosis and (b) identifying women's needs in relation to the disease.     

The marketing concept in perspective

A re-evaluation of the marketing concept appears to be in the making. The focus of research designed to facilitate this re-evaluation is likely to be of considerable importance to the future development of marketing theory. Research designed to better define the role and scope of the marketing concept seems to offer the most promise. Such research would be an aid to determining where the marketing concept should fit into a comprehensive theory of marketing. Limitations of the marketing concept are well documented in the literature suggesting a need for a broader framework of marketing theory. It seems imperative that academicians accept the responsibility for developing a more comprehensive general theory of marketing, one relevant to both the micro and macro aspects of a functioning system. Such flexibility seems to be a minimal requirement.