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1 – 10 of over 114000
Article
Publication date: 1 January 1993

Robert T. Golembiewski, Robert Boudreau, Keiichi Goto and Tadamasa Murai

This study used a convenience sample (N = 387) aggregated from several Japanese worksettings to replicate results obtained with the phase model of burnout in a substantial number…

Abstract

This study used a convenience sample (N = 387) aggregated from several Japanese worksettings to replicate results obtained with the phase model of burnout in a substantial number of studies in North American loci. At several levels of analysis, the results of the present replication support the generic character of the phase model and its components. Thus Japanese respondents psychologically structure the items of the Maslach Burnout Inventory used to estimate individual scores on three subdomains of burnout in much the same ways as two large batches of U.S. respondents. These subdomain scores—depersonalization, personal accomplishment, and emotional exhaustion—are combined to generate assignments of Japanese respondents to phases of burnout. Moreover, the phase assignments covary significantly with a panel of marker variables, which are similar or identical to variables used in North American studies. Basically, as the phases progress I → VIII, individuals report worsening scores on all 6 marker variables—job involvement, number of health symptoms, helplessness, job satisfaction, job tension, and self‐rated productivity. The pattern of results is similar to that in almost all North American studies using the phase model. Japanese respondents get assigned to the three most advanced phases of burnout in markedly greater proportion than North American respondents. In comparison to most of its counterparts, the present study accounts for a smaller proportion of variance between the phases and marker variables.

Details

The International Journal of Organizational Analysis, vol. 1 no. 1
Type: Research Article
ISSN: 1055-3185

Abstract

Details

The Political Economy of Antitrust
Type: Book
ISBN: 978-0-44453-093-6

Abstract

Details

The Economics of Time Use
Type: Book
ISBN: 978-1-84950-838-4

Article
Publication date: 16 June 2023

Sibel Yılmaz and Özge Elmastaş Gültekin

The purpose of this study is to find the reliability of the three-component three-phased mission system, which can be repaired by considering the exponential distribution for…

Abstract

Purpose

The purpose of this study is to find the reliability of the three-component three-phased mission system, which can be repaired by considering the exponential distribution for repair and failure rates in the transitions between the phases based on states with Markov approach. Also, multilevel-phased mission systems are calculated based on states for partially working states.

Design/methodology/approach

The reliabilities of the repairable two-level and three-level three-component three-phased mission systems based on states are calculated with the Markov approach. The structure functions are obtained for each phase of the systems, and differential equations are created by the failure and repair of each working state component. These equations are solved using Laplace method.

Findings

Reliability values of two-level and three-level three-component three-phased systems with different failure, repair, and time intervals are calculated and compared. The intermediate states that multilevel systems handle differently from two-level systems provide a better investigation of the systems. So, these repairable systems offer transparent information in complex systems like transportation and energy, ensuring appropriate timing and cost for repair operations.

Originality/value

This study is original in terms of calculating the reliability of the repairable phased mission system based on the states using Markov method. It is also important in calculating the reliability of the repairable multilevel phased mission system based on states and making reliability comparisons according to different repair and failure rates, equal and different time intervals.

Details

Engineering Computations, vol. 40 no. 5
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 27 July 2021

Karima El Kihel, Hasnae Saadi, Rachid Aharrouch, Abdelmoumen El Antari, Nabil Hachem, Mohamed Madani and Mohammed El Bouziani

The authors investigate the magnetic properties of a mixed spin-3/2 and spin-2 Blume-Capel model on square and cubic lattices with two different single-ion anisotropies.

Abstract

Purpose

The authors investigate the magnetic properties of a mixed spin-3/2 and spin-2 Blume-Capel model on square and cubic lattices with two different single-ion anisotropies.

Design/methodology/approach

To study the critical behavior of a mixed spin-3/2 and spin-2 system, the authors have used a real space renormalization group approximation and specifically the Migdal-Kadanoff technique. The authors give the phase diagrams for two different cases: (1) on the (Δ/|J|, 1/|J|) plane with ΔA = ΔB = Δ, and (2) on the (ΔA/|J|, 1/|J|) and (ΔB/|J|, 1/|J|) planes for selected values of ΔB/|J| and ΔA/|J|, respectively.

Findings

The phase diagrams obtained show that the system exhibits both second- and first-order phase transitions as well as tricritical points for some values of the anisotropies. Moreover, using the variation of the free energy and its derivative at low temperatures, the authors have seen the appearance of first-order transitions at very low temperatures.

Originality/value

Few investigations of mixed spin-3/2 and spin-2 systems with crystal field have been realized. For this reason, the authors use the renormalization group approach to complete the work done on these systems. In absence of an exact solution, this contributes to the synthesis of the approximation results on mixed spins models.

Details

Multidiscipline Modeling in Materials and Structures, vol. 17 no. 5
Type: Research Article
ISSN: 1573-6105

Keywords

Book part
Publication date: 19 September 2014

Abdullah A. Alshwer and Edward Levitas

This study empirically examines the relationship between institutional ownership and innovation activity in the unique setting of the clinical trials for US biopharmaceutical…

Abstract

This study empirically examines the relationship between institutional ownership and innovation activity in the unique setting of the clinical trials for US biopharmaceutical companies. We used multiple statistical techniques in the period from 1990 through 2006 for firms in the biopharmaceutical industry to examine this relationship. Contrary to the widely believed relationship discussed in the literature, our findings suggest that institutional investors vary in their reactions to innovative progress. Specifically, we find that institutional investors with a long-term investment horizon (i.e., dedicated owners) increase their holdings of a firm’s equity as the number of the firm’s products increases in phases I and II of FDA clinical trials. These findings are robust for heteroskedasticity and autocorrelation as well as for different operationalizations of the change of institutional ownership.

Details

Finance and Strategy
Type: Book
ISBN: 978-1-78350-493-0

Keywords

Article
Publication date: 4 December 2018

Byung-Hyun Shin, Dohyung Kim, Sanghyup Park, Myungwon Hwang, Junghyun Park and Wonsub Chung

The secondary phase decreased the corrosion resistance because of the segregation of Cr and Mo. Therefore, this paper aims to study the precipitation condition and the effect of…

Abstract

Purpose

The secondary phase decreased the corrosion resistance because of the segregation of Cr and Mo. Therefore, this paper aims to study the precipitation condition and the effect of secondary phase with volume fraction on corrosion behavior.

Design/methodology/approach

Secondary phase precipitated approximately from 375°C to 975°C because of saturated Cr and Mo at grain boundary by growth of austenite. Therefore, heat treatment from 800°C to 1,300°C was applied to start the precipitation of the secondary phase.

Findings

The secondary phase is precipitated at 1,020°C because of segregation by heterogeneous austenite. The growth of austenite at 1,000°C needs the time to saturate the Cr and Mo at grain boundary. When the volume fraction of austenite is 56 per cent (14 min at 1,000°C), the secondary phase is precipitated with grain boundary of austenite. The secondary phase increased the current density (corrosion rate) and decreased the passivation. That is checked to the critical pitting temperature (CPT) curves. The 1 per cent volume fraction of secondary phase decreased CPT to 60°C from 71°C.

Research limitations/implications

The precipitation of secondary phase not wants anyone. Casted super-duplex stainless steel (SDSS) of big size precipitates the secondary phase. This study worked the precipitation condition and the suppression conditions of secondary phase.

Social implications

Manufacturers need precipitation condition to make high-performance SDSS.

Originality/value

The corrosion resistance of SDSS is hard the optimization because SDSS is dual-phase stainless steel. The precipitation of the secondary phase must be controlled to optimize of the corrosion resistance of SDSS. Anyone not studied the precipitation condition of secondary phase and the effect of secondary phase with volume fraction on corrosion behavior of SDSS.

Details

Anti-Corrosion Methods and Materials, vol. 66 no. 1
Type: Research Article
ISSN: 0003-5599

Keywords

Article
Publication date: 28 November 2018

Mojtaba Moshiri and Mehrdad T. Manzari

This paper aims to numerically study the compositional flow of two- and three-phase fluids in one-dimensional porous media and to make a comparison between several upwind and…

Abstract

Purpose

This paper aims to numerically study the compositional flow of two- and three-phase fluids in one-dimensional porous media and to make a comparison between several upwind and central numerical schemes.

Design/methodology/approach

Implicit pressure explicit composition (IMPEC) procedure is used for discretization of governing equations. The pressure equation is solved implicitly, whereas the mass conservation equations are solved explicitly using different upwind (UPW) and central (CEN) numerical schemes. These include classical upwind (UPW-CLS), flux-based decomposition upwind (UPW-FLX), variable-based decomposition upwind (UPW-VAR), Roe’s upwind (UPW-ROE), local Lax–Friedrichs (CEN-LLF), dominant wave (CEN-DW), Harten–Lax–van Leer (HLL) and newly proposed modified dominant wave (CEN-MDW) schemes. To achieve higher resolution, high-order data generated by either monotone upstream-centered schemes for conservation laws (MUSCL) or weighted essentially non-oscillatory (WENO) reconstructions are used.

Findings

It was found that the new CEN-MDW scheme can accurately solve multiphase compositional flow equations. This scheme uses most of the information in flux function while it has a moderate computational cost as a consequence of using simple algebraic formula for the wave speed approximation. Moreover, numerically calculated wave structure is shown to be used as a tool for a priori estimation of problematic regions, i.e. degenerate, umbilic and elliptic points, which require applying correction procedures to produce physically acceptable (entropy) solutions.

Research limitations/implications

This paper is concerned with one-dimensional study of compositional two- and three-phase flows in porous media. Temperature is assumed constant and the physical model accounts for miscibility and compressibility of fluids, whereas gravity and capillary effects are neglected.

Practical implications

The proposed numerical scheme can be efficiently used for solving two- and three-phase compositional flows in porous media with a low computational cost which is especially useful when the number of chemical species increases.

Originality/value

A new central scheme is proposed that leads to improved accuracy and computational efficiency. Moreover, to the best of authors knowledge, this is the first time that the wave structure of compositional model is investigated numerically to determine the problematic situations during numerical solution and adopt appropriate correction techniques.

Details

International Journal of Numerical Methods for Heat & Fluid Flow, vol. 29 no. 1
Type: Research Article
ISSN: 0961-5539

Keywords

Article
Publication date: 1 June 2000

K. Wiak

Discusses the 27 papers in ISEF 1999 Proceedings on the subject of electromagnetisms. States the groups of papers cover such subjects within the discipline as: induction machines;…

Abstract

Discusses the 27 papers in ISEF 1999 Proceedings on the subject of electromagnetisms. States the groups of papers cover such subjects within the discipline as: induction machines; reluctance motors; PM motors; transformers and reactors; and special problems and applications. Debates all of these in great detail and itemizes each with greater in‐depth discussion of the various technical applications and areas. Concludes that the recommendations made should be adhered to.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 19 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 27 September 2023

Gary Lamph, Alison Elliott, Sue Wheatcroft, Gillian Rayner, Kathryn Gardner, Michael Haslam, Emma Jones, Mick McKeown, Jane Gibbon, Nicola Graham-Kevan and Karen Wright

The aim of this paper is to provide an overview of a novel offender personality disorder (OPD) higher education programme and the research evaluation results collected over a…

Abstract

Purpose

The aim of this paper is to provide an overview of a novel offender personality disorder (OPD) higher education programme and the research evaluation results collected over a three-year period. Data from Phase 1 was collected from a face-to-face mode of delivery, and Phase 2 data collected from the same programme was from an online mode of delivery because of the COVID-19 pandemic.

Design/methodology/approach

In Phase 1, three modules were developed and delivered in a fully face-to-face format before the pandemic in 2019–2020 (n = 52 student participants). In 2020–2021 (n = 66 student participants), training was adapted into a fully online mode of delivery in Phase 2. This mixed-methods study evaluated participant confidence and compassion. Pre-, post- and six-month follow-up questionnaires were completed. Qualitative interviews were conducted across both phases to gain in-depth feedback on this programme (Phase 1: N = 7 students, Phase 2: N = 2 students, N = 5 leaders). Data from Phase 1 (face-to-face) and Phase 2 (online) are synthesised for comparison.

Findings

In Phase 1 (N = 52), confidence in working with people with personality disorder or associated difficulties improved significantly, while compassion did not change. In Phase 2 (N = 66), these results were replicated, with statistically significant improvements in confidence reported. Compassion, however, was reduced in Phase 2 at the six-month follow-up. Results have been integrated and have assisted in shaping the future of modules to meet the learning needs of students.

Research limitations/implications

Further research into the impact of different modes of delivery is important for the future of education in a post-pandemic digitalised society. Comparisons of blended learning approaches were not covered but would be beneficial to explore and evaluate in the future.

Practical implications

This comparison provided informed learning for consideration in the development of non-related educational programmes and, hence, was of use to other educational providers.

Originality/value

This paper provides a comparison of a student-evaluated training programme, thus providing insights into the impact of delivering a relational-focused training programme in both face-to-face and online distance learning delivery modes. From this pedagogic research evaluation, the authors were able to derive unique insights into the outcomes of this programme.

Details

The Journal of Forensic Practice, vol. 25 no. 4
Type: Research Article
ISSN: 2050-8794

Keywords

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