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MODELING FLUCTUATIONS IN A MINIMAL PLANKTON MODEL: ROLE OF SPATIAL HETEROGENEITY AND STOCHASTICITY

BHATTACHARYYA, R.; MUKHOPADHYAY, B. - In: Advances in Complex Systems (ACS) 10 (2007) 02, pp. 197-216

The present paper studies the naturally observed phenomenon of population fluctuation in the context of a minimal plankton model. The analysis of the basic model reveals asymptotic stable behavior that is unable to explain any kind of population outburst. We introduce the nonuniform spatial...

Persistent link: https://www.econbiz.de/10005080921

How Effective Are Asynchronous Online Discussions in Teaching Legal, Ethical, Professional and Social Issues?

Kingsley, Paul; Sharon, Taly; Livadas, Lelia - International Institute of Social and Economic Sciences - 2014

A survey was carried out among mature adult students and their instructors involved in a British university’s online Master’s degrees in Computing/IT. All were experienced in engaging in asynchronous online discussions. They were asked about the effectiveness of online discussions (the...

Persistent link: https://www.econbiz.de/10011210174

Organizational Demography and Turnover: An Examination of Multiform and Non-Linear Heterogeneity

Alexander, Jeffrey; Nuchols, Beverly; Bloom, Joan; Lee, … - Institute for Research on Labor and Employment (IRLE), … - 1993

This paper advances the study of organizational demography and its relationship to organizational turnover by examining two of Blau's concepts of social structure: non-linear and multiform heterogeneity. In a sample of 383 community hospitals, nursing turnover was examined in relation to four...

Persistent link: https://www.econbiz.de/10010538149

Nursing Turnover and Hospital Efficiency: An Organization Level Analysis

Alexander, Jeffrey A.; Bloom, Joan R.; Nuchols, Beverly A. - Institute for Research on Labor and Employment (IRLE), … - 1991

This study tests the competing arguments that organizational turnover rates are positively associated with organizational inefficiency or, alternatively, that turnover rates are positively related to organizational inefficiency only in those organizations experiencing very high or very low rates...

Persistent link: https://www.econbiz.de/10010538162

Staffing Patterns and Hospital Efficiency

Bloom, Joan R.; Alexander, Jeffrey A; Nuchols, Beverly A. - Institute for Research on Labor and Employment (IRLE), … - 1993

The objective of this study was to assess the effect of four different nurse staffing strategies on hospital costs: Part-time RNs; RN temporary agencies; RN rich skill mix; and organizationally experienced RNs. Two regression equations were specified to consider the effect of these strategies on...

Persistent link: https://www.econbiz.de/10010538238

The Effect of the Social Organization of Work on Voluntary Tunover of Hospital Nurses in the United States

Bloom, Joan R.; Alexander, Jeffrey A.; Nuchols, Beverly A. - Institute for Research on Labor and Employment (IRLE), … - 1991

In light of current concerns over nursing shortages and productivity, turnover among hospital nurses in the United States has assumed renewed importance as a managerial issue. This study examines the thesis that the social organization of work in hospitals is an importnt determinate of voluntary...

Persistent link: https://www.econbiz.de/10010538239

Improving Privacy and Security of User Data in Location Based Services

Yamin, Mohammad; Sen, Adnan Ahmed Abi - In: International Journal of Ambient Computing and … 9 (2018) 1, pp. 19-42

Location Based Services (LBS) expose user data to malicious attacks. Approaches, evolved, so far, for preserving privacy and security, suffer from one or more anomalies, and hence the problem of securing LBS data is far from being resolved. In particular, accuracy of results vs. privacy degree,...

Persistent link: https://www.econbiz.de/10012042666

Development of a novel cascading TPV and TE power generation system

Qiu, K.; Hayden, A.C.S. - In: Applied Energy 91 (2012) 1, pp. 304-308

generation. In this study, the concept of cascading TPV and TE power generation was developed where the used heat stream is taken … from the TPV and applied to the input of a TE converter. A prototype cascading TPV and TE generation system was built and … tested. GaSb TPV cells and an integrated semiconductor TE converter were used in the cascading power system. The electric …

Persistent link: https://www.econbiz.de/10010571970

HERDING MOMENTUM EFFECT AND FEEDBACK TRADING OF QUALIFIED FOREIGN INSTITUTIONAL INVESTORS IN THE TAIWAN STOCK MARKET

Lu, Yang-Cheng; Wong, Jehn-Yih; Fang, Hao - In: The International Journal of Business and Finance Research 3 (2009) 2, pp. 147-167

This study extends the herding measures proposed by Warmers (1999), Lakonishok, Shleifer and Vishny (1992) and Borensztein and Gaston (2003) for stocks overbought and oversold by institutional investors as well as the information content related to institutional herding proposed by Nofsinger and...

Persistent link: https://www.econbiz.de/10011206147

Targeting, Cascading, and Indirect Tax Design

Keen, Michael - International Monetary Fund (IMF) - 2013

better serve their interests. It then explores the welfare costs from cascading taxes, showing that these may actually be …

Persistent link: https://www.econbiz.de/10011123815