John A. Kairalla  Keith E. Muller  Christopher S. Coffey 《统计学通讯:理论与方法》2013,42(20):3717-3738

An internal pilot with interim analysis (IPIA) design combines interim power analysis (an internal pilot) with interim data analysis (two-stage group sequential). We provide IPIA methods for single df hypotheses within the Gaussian general linear model, including one and two group t tests. The design allows early stopping for efficacy and futility while also re-estimating sample size based on an interim variance estimate. Study planning in small samples requires the exact and computable forms reported here. The formulation gives fast and accurate calculations of power, Type I error rate, and expected sample size.  相似文献   

    

Alison M. Konrad  Mark E. Moore  Eddy S. W. Ng  Alison J. Doherty  Katherine Breward 《英国管理杂志》2013,24(3):367-382

This study examines whether employment status and workplace accommodations are associated with perceived well‐being among workers with disabilities. Data from the 2006 Participation and Activity Limitation Survey conducted by Statistics Canada were used to test the relationship between employment status, receipt of workplace accommodations and well‐being. Findings indicated that fully utilized permanent employees showed greater life satisfaction and less perceived disability‐related discrimination than either temporary workers or permanent workers who were underemployed. These findings support the theory that inadequate employment is associated with deleterious effects on employee well‐being due to inferior need fulfilment and reduced social status. Workplace accommodations were associated with higher levels of well‐being for all workers with disabilities and helped to mitigate the negative effects of temporary status and underemployment. These findings supported the theoretical extension of main effect and buffering models of workplace stress to the prediction of perceived workplace discrimination.  相似文献   

    

James E. Clarke  Rick Tamaschke  Peter W. Liesch 《国际管理评论杂志》2013,15(3):265-279

International experience, the experience that firms accrue from operating internationally, is a key concept in explaining firm internationalization. This paper reviews the conceptualization of international experience in the international business literature. It highlights how prior research has identified three dimensions of the international experience construct (length, scope and diversity), thereby demonstrating that international experience should be treated as a multidimensional construct. In addition, intensity is presented as a fourth and novel dimension of international experience. The importance of this multidimensional conceptualization is highlighted in an explanation of why the international diversification and international experience constructs are not synonymous. In light of the importance of international experience in explaining firm internationalization, the authors explore how the source of the firm's international experience will determine the limits to its application in foreign markets. In particular, the authors distinguish between location‐bound international experience and non‐location‐bound international experience as sources of firm‐specific advantages (FSAs). The FSAs that the firm develops from its experience with equity and non‐equity entry modes are presented as examples of specific FSAs developed within the firm's bundle of FSAs concerning internationalization. The paper concludes with some implications of the conceptualization of international experience for several issues of international business research as well as providing managerial implications.  相似文献   

    

Shi Q  Pavey ES  Carter RE 《Pharmaceutical statistics》2012,11(4):300-309

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Carey E. Priebe  Jeffrey L. Solka  David J. Marchette  Avory C. Bryant 《Statistical Analysis and Data Mining》2012,5(3):178-186

‘The identification of potential breakthroughs before they happen’ is a vague data analysis problem and ‘the scientific literature’ is a massive, complex dataset. Hence QHS for MTS might seem to be prototypical of the data miner's lament: ‘Here's some data we have… can you find something interesting?’ Nonetheless, the problem is real and important, and we develop an innovative statistical approach thereto—not a final etched‐in‐stone approach, but perhaps the first complete quantitative methodology explicitly addressing QHS for MTS. © 2012 Wiley Periodicals, Inc. Statistical Analysis and Data Mining5: 178–186, 2012  相似文献   

    

Guobing Lu  Nicky J. Welton  Julian P. T. Higgins  Ian R. White  A. E. Ades 《Research Synthesis Methods》2012,3(3):255-255

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Joseph E. Swartz  Brian W. Hudson  Mark Graban 《Global Business and Organizational Excellence》2013,32(4):28-35

Efficient, effective, and coordinated action is essential in health care, where the outcome can mean the difference between life and death. At Franciscan Alliance, a multifacility Catholic health care system in Indiana and Illinois, Lean Six Sigma projects, rapid improvement events, and Quick & Easy Kaizens have become a part of the organizational culture, helping staff members at all levels to creatively rethink processes and streamline day‐to‐day operations in order to cut hospital stays and costs while enhancing the quality of patient care. In just one year, more than 4,000 improvements yielded $1.7 million in savings. More important, a project to eliminate delays in the way heart attack patients are assessed and treated has led to the development of a standard of care that is being emulated—and is saving lives—across the globe. © 2013 Wiley Periodicals, Inc.  相似文献   

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Gordon H. Copp  Lorenzo Vilizzi  John Mumford  Gemma V. Fenwick  Michael J. Godard  Rodolphe E. Gozlan 《Risk analysis》2009,29(3):457-467

Adapted from the weed risk assessment (WRA) of Pheloung, Williams, and Halloy, the fish invasiveness scoring kit (FISK) was proposed as a screening tool for freshwater fishes. This article describes improvements to FISK, in particular the incorporation of confidence (certainty/uncertainty) ranking of the assessors' responses, and reports on the calibration of the score system, specifically: determination of most appropriate score thresholds for classifying nonnative species into low-, medium-, and high-risk categories, assessment of the patterns of assessors' confidences in their responses in the FISK assessments. Using receiver operating characteristic (ROC) curves, FISK was demonstrated to distinguish accurately (and with statistical confidence) between potentially invasive and noninvasive species of nonnative fishes, with the statistically appropriate threshold score for high-risk species scores being ≥19. Within the group of species classed as high risk using this new threshold, a \"higher risk\" category could be visually identified, at present consisting of two species (topmouth gudgeon Pseudorasbora parva and gibel carp Carassius gibelio ). FISK represents a useful and viable tool to aid decision- and policymakers in assessing and classifying freshwater fishes according to their potential invasiveness.  相似文献   

    

E. Donald Elliott 《Risk analysis》2009,29(4):482-482

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George E. Nakos  Yannis A. Hajidimitriou 《Global Business and Organizational Excellence》2009,28(5):70-83

Greece has emerged in recent years as an attractive business destination for international companies. European Union membership and the adoption of the euro have greatly changed the Greek economy. This article outlines recent changes in the Greek political and economic environment and the opportunities and challenges that international managers face in Greece. Energy, technology, tourism, and food and beverage industries are the hot sectors of the economy where foreign investors are expected to concentrate their interest in the future. © 2009 Wiley Periodicals, Inc.  相似文献