University of Texas at Arlington

About: University of Texas at Arlington is a education organization based out in Arlington, Texas, United States. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 11758 authors who have published 28598 publications receiving 801626 citations. The organization is also known as: UT Arlington & University of Texas-Arlington.

A field study of a cognitive approach to understanding transformational and transactional leadership

Abstract: A part of the cognitive model of transformational and transactional leadership proposed by Wofford and Goodwin (1994) was examined in a field setting. Ninety-six managers and 157 subordinates completed questionnaires that assessed transformational leadership and transactional leadership dimensions, four cognitive variables (i.e., follower-schemata, motivation-scripts, abstractness of vision, and idealization of vision) and three dependent variables (i.e., subordinate satisfaction with supervision, subordinate perception of leader effectiveness, and leaders' evaluation of group effectiveness). Partial Least Squares (PLS) analyses indicated that the data generally supported the hypothesized model. Some of the proposed relationships examined, however, were not statistically significant. Implications of the findings for application and future research were discussed.

Optimizing object queries using an effective calculus

Abstract: Object-oriented databases (OODBs) provide powerful data abstractions and modeling facilities, but they generally lack a suitable framework for query processing and optimization. The development of an effective query optimizer is one of the key factors for OODB systems to successfully compete with relational systems, as well as to meet the performance requirements of many nontraditional applications. We propose an effective framework with a solid theoretical basis for optimizing OODB query languages. Our calculus, called the monoid comprehension calculus, captures most features of ODMG OQL, and is a good basis for expressing various optimization algorithms concisely. This article concentrates on query unnesting (also known as query decorrelation), an optimization that, even though it improves performance considerably, is not treated properly (if at all) by most OODB systems. Our framework generalizes many unnesting techniques proposed recently in the literature, and is capable of removing any form of query nesting using a very simple and efficient algorithm. The simplicity of our method is due to the use of the monoid comprehension calculus as an intermediate form for OODB queries. The monoid comprehension calculus treats operations over multiple collection types, aggregates, and quantifiers in a similar way, resulting in a uniform method of unnesting queries, regardless of their type of nesting.

The valves of the throat and their functioning in tone, vocal register and stress: laryngoscopic case studies

Abstract: The standard method of describing phonation for tone, vocal register, stress and other linguistic categories relies on the ‘continuum hypothesis’ that linguistic sounds are produced by means of glottal states determined by the aperture between the arytenoid cartilages, the endpoints of the voiceless–voiced continuum being ‘open glottis’ and ‘closed glottis’. This paper takes a different view, pointing out that many languages make use of a number of valves, and that these valves are not articulations on a glottal continuum but represent a synergistic and hierarchical system of laryngeal articulations. These valves constitute a principal source of phonological contrast, with an influence on how oral articulatory events are characterised.

Marketing Research: A State-of-the-Art Review and Directions for the Twenty-First Century

Abstract: This article provides observations on the state of the art in marketing research during 1987–1997. As such, it updates the earlier state-of-the-art review by Malhotra (1988), which won theJournal of the Academy of Marketing Science (JAMS) Best Article Award. The primary thrust of articles published in theJournal of Marketing Research during 1987–1997 is reviewed to determine important areas of research. In each of these areas, the authors summarize recent developments, highlight the state of the art, offer some critical observations, and identify directions for future research. They present a cross-classification of various techniques and subject areas, and make some observations on the applications of these techniques to address specific substantive and methodological issues in marketing research. The article concludes with some general directions for marketing research in the twenty-first century.

The jingle-jangle of work-nonwork balance: A comprehensive and meta-analytic review of its meaning and measurement.

Abstract: We review research on work-nonwork balance to examine the presence of the jingle fallacy-attributing different meanings to a single construct label-and the jangle fallacy-using different labels for a single construct. In 290 papers, we found 233 conceptual definitions that clustered into 5 distinct, interpretable types, suggesting evidence of the jingle fallacy. We calculated Euclidean distances to quantify the extent of the jingle fallacy and found high divergence in definitions across time and publication outlet. One exception was more agreement recently in better journals to conceptualize balance as unidimensional, psychological, and distinct from conflict and enrichment. Yet, over time many authors have committed the jangle fallacy by labeling measures of conflict and/or enrichment as balance, and disagreement persists even in better journals about the meanings attributed to balance (e.g., effectiveness, satisfaction). To examine the empirical implications of the jingle and jangle fallacies, we conducted meta-analyses of distinct operational definitions of balance with job, life, and family satisfaction. Effect sizes for conflict and enrichment measures were typically smaller than effects for balance measures, providing evidence of a unique balance construct that is not interchangeable with conflict and enrichment. To begin to remedy concerns raised by our review, we propose a definition of work-nonwork balance drawing from theory, empirical evidence from our review, and normative information about how balance should be defined. We conclude with a theory-based agenda for future research. (PsycINFO Database Record