SURVIVAL‐JUST ANOTHER WORD FOR NOTHING LEFT TO LOSE     

Frank W. Lutz 《Review of Education, Pedagogy & Cultural Studies》2013,35(1):87-89

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Bewegungsberatung durch Experten aus der Sportwissenschaft. Eine Public Health Strategie zur Erhöhung körperlicher Aktivität bei speziellen Zielgruppen     

Lars Gabrys  Christian Thiel  Gert Saborowski  Lutz Vogt  Winfried Banzer 《Sportwissenschaft》2013,43(1):12-19

Although sports clubs, associations and health insurance companies offer a wide range of exercise programs, several target groups, such as groups with low socioeconomic status struggle to overcome barriers for participation. The aim of this paper is to show the need for, as well as the prospects of structured physical activity counselling for specific target groups provided by exercise specialists. This successful approach to promote physical activity is described detailed in the group of long-term unemployed persons over 50 years in a job centre setting. A close cooperation with established local exercise programs is intended. Deficits and requirements of physical activity counselling in primary health care settings are adopted and transferred into the theory-based public health strategy. This approach has the potential to create a new field of work for exercise and health professionals in the field of primary prevention.  相似文献   

Which are the best performing regions in information science in terms of highly cited papers? Some improvements of our previous mapping approaches     

Lutz Bornmann  Loet Leydesdorff 《Journal of Informetrics》2012,6(2):336-345

Bornmann and Leydesdorff (2011) proposed methods based on Web of Science data to identify field-specific excellence in cities where highly cited papers were published more frequently than can be expected. Top performers in output are cities in which authors are located who publish a number of highly cited papers that is statistically significantly higher than can be expected for these cities. Using papers published between 1989 and 2009 in information science improvements to the methods of Bornmann and Leydesdorff (2011) are presented and an alternative mapping approach based on the Integrated Impact Indicator (I3) is introduced here. The I3 indicator was developed by Leydesdorff and Bornmann (2011b).  相似文献   

Song for a New Generation     

Gertrude May Lutz 《The Educational forum》2013,77(2)

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Some interesting insights from aggregated data published in the World Report SIR 2010     

Lutz Bornmann  Felix de Moya Anegon 《Journal of Informetrics》2011,5(3):486-488

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Cross-lagged relationships among leisure-time exercise and perceived stress in blue-collar workers     

Lutz RS  Lochbaum MR  Lanning B  Stinson LG  Brewer R 《运动与训练心理学杂志》2007,29(6):687-705

Blue-collar workers (N = 203) from a large food-processing plant in the southwestern U.S. completed measures of perceived stress and leisure-time exercise at an initial test session in addition to a 2-month follow-up session. Mean age of the sample participants equaled 43.61 (SD = 9.79), and 69.5% of the sample were male, 71.4% were Caucasian, and 74.9% were married/cohabitating. Structural equation modeling was employed to examine the cross-lagged relationships between perceived stress and leisure-time exercise at these time points, controlling for gender, marital status, age, and yearly household income. Results indicated that a model with a path from perceptions of Time 1 stress to Time 2 exercise frequency was most parsimonious and provided acceptable model fit, suggesting that perceptions of stress are related to reductions in exercise participation in this population. However, there was little support for a relationship between Time 1 exercise participation and Time 2 perceived stress.  相似文献   

The problem of citation impact assessments for recent publication years in institutional evaluations     

Lutz Bornmann 《Journal of Informetrics》2013,7(3):722-729

Bibliometrics has become an indispensable tool in the evaluation of institutions (in the natural and life sciences). An evaluation report without bibliometric data has become a rarity. However, evaluations are often required to measure the citation impact of publications in very recent years in particular. As a citation analysis is only meaningful for publications for which a citation window of at least three years is guaranteed, very recent years cannot (should not) be included in the analysis. This study presents various options for dealing with this problem in statistical analysis. The publications from two universities from 2000 to 2011 are used as a sample dataset (n = 2652, univ 1 = 1484 and univ 2 = 1168). One option is to show the citation impact data (percentiles) in a graphic and to use a line for percentiles regressed on ‘distant’ publication years (with confidence interval) showing the trend for the ‘very recent’ publication years. Another way of dealing with the problem is to work with the concept of samples and populations. The third option (very related to the second) is the application of the counterfactual concept of causality.  相似文献   

The validation of (advanced) bibliometric indicators through peer assessments: A comparative study using data from InCites and F1000     

Lutz Bornmann  Loet Leydesdorff 《Journal of Informetrics》2013,7(2):286-291

The data of F1000 and InCites provide us with the unique opportunity to investigate the relationship between peers’ ratings and bibliometric metrics on a broad and comprehensive data set with high-quality ratings. F1000 is a post-publication peer review system of the biomedical literature. The comparison of metrics with peer evaluation has been widely acknowledged as a way of validating metrics. Based on the seven indicators offered by InCites, we analyzed the validity of raw citation counts (Times Cited, 2nd Generation Citations, and 2nd Generation Citations per Citing Document), normalized indicators (Journal Actual/Expected Citations, Category Actual/Expected Citations, and Percentile in Subject Area), and a journal based indicator (Journal Impact Factor). The data set consists of 125 papers published in 2008 and belonging to the subject category cell biology or immunology. As the results show, Percentile in Subject Area achieves the highest correlation with F1000 ratings; we can assert that for further three other indicators (Times Cited, 2nd Generation Citations, and Category Actual/Expected Citations) the “true” correlation with the ratings reaches at least a medium effect size.  相似文献   

Exploring Authority: A Case Study of a Composition and a Professional Writing Classroom     

Jean Lutz  Mary Fuller 《Technical Communication Quarterly》2013,22(2):201-232

Abstract

This article reports on classroom research designed to answer questions about authority—how institutions and disciplines, broadly conceived, influence teachers' ability to abnegate authority and how students' experiences influence their perceptions of authority in a business writing and a first-year composition class. The theoretical framework is derived from research about institutional and disciplinary influences on these two areas of study. This framework and our results lead us to speculate about the ways in which our students' experience of the institution and expectations of the classes and their intentions for using the material taught in the classes may have thwarted our attempt to share authority in our classrooms.  相似文献   

Costing information services     

R P Lutz 《Bulletin of the Medical Library Association》1971,59(2):254-261

Information centers are being established for many disciplines. For the medical profession, users can benefit directly from these centers by having information searched by medical library professionals and readily available. If the users of an information system are to share in the operating expenses, some equitable system of charges must be established. The numerous systems of establishing user charges are listed and discussed, with the advantages or disadvantages of each system explained. After the systems have been reviewed, alternative methods of establishing prices are presented along with a typical example of what these prices might be, ranging from $7.50 to $2.50 per request. The implementation of the cost system is outlined and certain philosophical questions are posed.  相似文献