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31.
Distributions whose extremity values of the support depend on unknown pa¬rameters are usually known as nonregular distributions. In most cases, the MLEs for these parameters cannot be obtained by differentiation. Familiar examples are the uniform distribution on the interval (0,0) and the truncated exponential distribution with truncation parameter 0. However, there exist distributions whose extremity points of the support depend on unknown pa¬rameters, which nevertheless are regular in the sense that the MLEs can be obtained by differentiation. This note provides a method of constructing such nonregular distributions with regular MLEs. 相似文献
32.
Prof. Dr. Bernd Helmig Dipl.-Kffr. Vera Hinz Prof. Dr. Silke Michalski Dr. Kirstin von Trotha 《Zeitschrift für Betriebswirtschaft》2010,80(3):263-284
In 2004 a new working time law for physicians in hospitals was introduced, which has up until now been rarely researched in theory and is implemented in practice partially in form of new working time models, partially by relying on allowed variation rules within the law. Meanwhile, there are new discussions about changes of working time directives on the European level. This article aims to analyze the desired effects of the new working time law to decrease the workload, improve the possibilities of patient care and increase the working time satisfaction of physicians. To this end, a primary data collection is conducted in 15 hospitals and 35 hospital departments, generating 261 questionnaires, in order to empirically assess the theoretical model with the constructs working time model, workload, working time satisfaction, and possibilities of patient care using regression analyses. It can be shown that the new working time models decrease workload and enhance working time satisfaction of hospital physicians, but have no significant influence on the possibilities of patient care. These results are consistent for different ownerships and sizes of hospitals as well as for most services. No significant differences in the answers between various physician groups exist either. 相似文献
33.
This paper examines the antecedents, consequences and moderators of incremental learning capabilities, understood as an organization's ability to gradually adapt and expand its knowledge base. Conceptualized as a dynamic capability, incremental learning is expected to be a vital driver of organizational adaptation. As dynamic capabilities consist of bundles of relatively stable routines, it is proposed that an organization's level of incremental learning capabilities will be highly persistent over time. It is also argued that building and exercising incremental learning capabilities is resource intensive and will as such tend to rely on the availability of sufficient slack resources. Last, it is suggested that incremental learning will be positively related to organizational performance, especially when the underlying business model is labour rather than capital intensive. To test these theoretical ideas, the authors draw on extensive panel data from all public non‐specialist hospitals in England and find broad support for their hypotheses. 相似文献
34.
35.
Cynthia Fuchs Epstein 《Gender Issues》1998,16(1-2):34-46
Legitimation for the maintenance of privilege is often made by rhetorical strategies that appeal to often irrelevant but favored values of a group. The case for the continuance of the exclusion of women at two revered state-supported militarystyle colleges, The Virginia Military Institute (VMI) (in Virginia) and the Citadel (in South Carolina), was made by those institutions and their lawyers and expert witnesses by appeals to “rationality” which encompass unsupported stereotyped views and references to the value of historical precedent and the status quo. The view that males and females are basically different with respect to cognitive and emotional characteristics is employed in the rhetoric. Thus, in these institutions and in some others today (e.g., a new single sex public school) sex segregation is offered as a benefit not only to males but to females, who are regarded as unable to learn well in coeducational environments. The article notes that assumptions about basic cognitive and emotional differences are deceptive and are not supported by empirical evidence, and that the studies cited by advocates of sex segregation are either impaired methodologically or are irrelevant today. The article also explores the way in which such values as diversity and states' rights are employed in the rationales for segregation. 相似文献
36.
Michael Fuchs Katrin Gasior Tamara Premrov Katarina Hollan Anette Scoppetta 《Social Policy & Administration》2020,54(5):827-843
Non-take-up of means tested benefits is a widespread phenomenon in European welfare states. The paper assesses whether the reform that replaced the monetary social assistance benefit by the minimum income benefit in Austria in 2010/11 has succeeded in increasing take up rates. We use EU-SILC register data together with the tax-benefit microsimulation model EUROMOD/SORESI. The results show that the reform led to a significant decrease of non-take-up from 53 to 30% in terms of the number of households and from 51 to 30% in terms of expenditure. Following the three-t's (threshold, trigger, and trade-off) introduced by Van Oorschot, estimates of a two-stage Heckman selection model as well as expert interviews indicate that the taken measures include both threshold and trade-off characteristics. Elements such as the higher degree of anonymity within the claiming process, the provision of health insurance, binding minimum standards, the limitation of the maintenance obligations, new regulations related to the liquidation of wealth, as well as the general coverage of the benefit reform in the media and in public discussions led to an improved access to the benefit. 相似文献
37.
Marieke Haan Peter Lugtig Vera Toepoel 《International Journal of Social Research Methodology》2019,22(5):517-531
In this study, we investigate whether mobile device use in surveys can be predicted. We aim to identify possible motives for device use and build a model by drawing on theory from technology acceptance research and survey research. We then test this model with a Structural Equation Modeling approach using data of seven waves of the GESIS panel. We test whether our theoretical model fits the data by focusing on measures of fit, and by studying the standardized effects of the model. Results reveal that intention to use a particular device can predict actual use quite well. Ease of smartphone use is the most meaningful variable: if people use a smartphone for specific tasks, their intention to use a smartphone for survey completion is also more likely. In conclusion, investing in ease of use of mobile survey completion could encourage respondents to use mobile devices. This can foremost be established by building well-designed surveys for mobile devices. 相似文献
38.
This article aims to study the importance of the attributes of usability and attractiveness for the semi-public spaces of Shopping Centers considering the elderly users, the psycho-cognitive and bio-physiological changes resulting from the aging process, as well as their expectations of the built space. Through a qualitative study of theoretical review with a multidisciplinary focus in architecture, ergonomics, gerontology, environmental psychology and management, the conditions of the elderly users were identified, and also the attributes related to usability and attractiveness, collected in order to understand and organize their interrelationships, to suggest recommendations about the drafting of Shopping Centers, aiming to generate projects and environments that should promote the efficient and satisfactory use for elderly and may also create a competitive advantage for these enterprises. 相似文献
39.
Teodoroski Rde C Espíndola EZ Silva E Moro AR Pereira VL 《Work (Reading, Mass.)》2012,41(Z1):2596-2599
With the advent of technology, the computer became a working tool increasingly present in companies. Its purpose is to increase production and reduce the inherent errors in manual production. The aim of this study was to analyze the usability of 2D graphics software in creating clothing designs by a professional during his work. The movements of the mouse, keyboard and graphical tools were monitored in real time by software Camtasia 7? installed on the user's computer. To register the use of mouse and keyboard we used auxiliary software called MouseMeter?, which quantifies the number of times they pressed the right, middle and left mouse's buttons, the keyboard and also the distance traveled in meters by the cursor on the screen. Data was collected in periods of 15 minutes, 1 hour and 8 hours, consecutively. The results showed that the job is considered repetitive and high demands physical efforts, which can lead to the appearance of repetitive strain injuries. Thus, the goal of minimizing operator efforts and thereby enhance the usability of the examined tool, becomes imperative to replace the mouse by a device called tablet, which also offers an electronic pen and a drawing platform for design development. 相似文献
40.
In this paper, we analyze the equilibrium of a sequential game-theoretical model of lobbying, due to Groseclose and Snyder (Am Polit Sci Rev 90:303–315, 1996), describing a legislature that vote over two alternatives, where two opposing lobbies compete by bidding for legislators’ votes. In this model, the lobbyist moving first suffers from a second mover advantage and will make an offer to a panel of legislators only if it deters any credible counter-reaction from his opponent, i.e., if he anticipates to win the battle. This paper departs from the existing literature in assuming that legislators care about the consequence of their votes rather than their votes per se. Our main focus is on the calculation of the smallest budget that the lobby moving first needs to win the game and on the distribution of this budget across the legislators. We study the impact of the key parameters of the game on these two variables and show the connection of this problem with the combinatorics of sets and notions from cooperative game theory. 相似文献