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11.
Non-linear SUR and ITSUR techniques are proposed for the estimation of the APT and the CAPM when the factors are observed. These techniques estimate all of the parameters of the model simultaneously and directly impose the model's non-linear parameter restrictions. 相似文献
12.
Marjorie Armstrong‐Stassen Francine Schlosser 《Canadian Journal of Administrative Sciences / Revue Canadienne des Sciences de l\u0027Administration》2008,25(2):93-106
We drew from the literature on positive organizational behaviour (Luthans & Youssef, 2007) to test a process model relating generalized optimism (Carver & Scheier, 1999) to the cognitions, affect, and behaviour of 237 Canadian federal government managers during and following a major organizational downsizing. Our data supported a model in which generalized optimism measured 18 months prior to the downsizing (T1) associated positively with managers' cognitions, attitudes, job performance, and self‐reported coping effectiveness measured 12 months postdownsizing (T3). Analyses suggested that some of these associations were partially mediated by a positive thinking coping strategy and expectations for future career and job success reported during the downsizing (T2). We advocate for more research that draws from the positive organizational behaviour literature to study the effects of downsizing on survivors. Copyright © 2008 ASAC. Published by John Wiley & Sons, Ltd. 相似文献
13.
Marjorie B. McElroy 《Journal of econometrics》1977,6(3):381-387
This paper presents a measure of goodness of fit for Zellner's seemingly unrelated regressions. The measure is a monotonic transform of the appropriate (asymptotic) F-statistic, is bounded on [0, 1] and is maximized by Zellner's estimation technique. Glahn's composite correlation coefficient is shown to be a special case of this measure. It is also compared to Hooper's squared trace correlation coefficient. All three measures as well as some additional asymptotic summary test statistics are calculated for the two-equation example of Zellner. The applicability of the latter test statistics seems not to be recognized in applied work. 相似文献
14.
The rapidly increasing volume of both published and unpublished work on the arbitrage pricing theory (APT) of Ross (1976)
has given rise to a number of misunderstandings at the interface of theoretical and econometric work. In this article we extend
the theoretical structure of our previous work (McElroy and Burmeister, 1985, 1988; Burmeister and McElroy, 1987, 1988) to
provide a broad yet rigorous framework both for econometric estimation and for better economic interpretation of new empirical
results.
We begin with the case where allK factors are observed, and then present the second case ofK−1≡J observed APT factors and one unobserved factor, theresidual market factor introduced in McElroy and Burmeister (1985). The economic interpretations for equivalent specifications of this model are
discussed, and we enumerate several immediate payoffs to these specifications.
The main new results are concerned with the sometimes intricate relationships among APT models withK factors and APT models withK factors that are constrained to satisfy mean-variance efficiency restrictions. These results are not only of theoretical
interest, but more importantly they provide the basis for econometric estimation and testing of nested hypotheses. These econometric
issues are discussed in detail. 相似文献
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This paper reports the findings of an empirical field study of human behaviour in the context of planning. The investigation centres on ‘behavioural problems’ encountered by managers of strategic planning systems. Two general issues are addressed. The first concerns the frequency of occurrence of these problems among managers and their impact on the effectiveness of the planning process. The second issue pertains to whether the constellation of behavioural problems managers confront varies in accordance with the role of the manager in the planning system. Implications of the findings for practitioners and researchers are discussed. 相似文献
18.
Marjorie B. McElroy 《Journal of econometrics》1977,6(3):389-394
This paper extend, in an asymptotic sense, the strong and the weaker mean square error criteria and corresponding tests to linear models with non-spherical disturbances where the error covariance matrix is unknown but a consistent estimator for it is available. The mean square error tests of Toro-Vizcorrondo and Wallace (1968) and Wallace (1972) test for the superiority of restricted over unrestricted linear estimators in a least squares context. This generalization of these tests makes them available for use with GLS, Zellner's SUR, 2SLS, 3SLS, tests of over identification, and so forth. 相似文献
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20.
Nursing home staff turnover results in high cost--both economic and personal--and has a negative impact on the quality of care provided to residents at the end of life. Reducing staff turnover in nursing homes would benefit both the cost to the U.S. health care system, and, most importantly, the care residents receive in the vulnerable period leading to death. There is rising pressure on nursing homes to improve their palliative and end-of-life care practices and reduce transfers to hospital for situations and conditions that can be safely managed on site. Nursing care staff deserve an investment in the specific training necessary for them to give the highest quality care to dying residents. This training should be multifaceted and include the physiological, psychological, spiritual, interpersonal, and cultural (including ethnic) aspects of dying. Empowerment with these necessary knowledge, skills, and attitudes will not only result in better care for residents but likely also will reduce the burnout and frustration staff experience in caring for residents near death. 相似文献