bluuebunny/crossref_metadata_2025_split huggingface dataset:
Job crafting and motivation to continue working beyond retirement age
Authors: Lichtenthaler Philipp Wolfgang , Fischbach Andrea 
Published: September 2016

Purpose
The purpose of this paper is to examine how promotion- and prevention-focussed job crafting impacts the motivation of older employees to continue working beyond retirement age. The authors hypothesized that promotion-focussed job crafting (i.e. increasing social and structural job resources, and challenging job demands) relates positively and prevention-focussed job crafting (i.e. decreasing hindering job demands) relates negatively with motivation to continue working after reaching the official retirement age, and that these relationships are sequential mediated by work sense of coherence and burnout.

Design/methodology/approach
Data from 229 older employees (mean age=55.77) were analyzed using structural equation modeling.

Findings
Promotion-focussed job crafting was positively and prevention-focussed job crafting was negatively related with employees’ work sense of coherence, which was predictive of employees’ burnout, which in turn was predictive of motivation to continue working beyond retirement age.

Research limitations/implications
Despite the cross-sectional study design, the results unfold how promotion- and prevention-focussed job crafting are related with motivation to continue working beyond retirement age through work sense of coherence and burnout.

Practical implications
Given today’s aging and shrinking workforce, older employees working beyond their official retirement age are a necessity for organizations’ functional capability. The results suggest that organizations should encourage employees’ promotion-focussed job crafting and limit prevention-focussed job crafting. Promotion-focussed job crafting facilitates employees’ work sense of coherence, which keeps them healthy and motivates older employees to continue working beyond retirement age.

Originality/value
This study adds to the literatures on job crafting and motivation to continue working beyond retirement age and explicates intervening processes in this relationship.
Performance analysis of LCLC resonant converter with PI and fuzzy gain scheduled PI controllers
Authors: Lourdusami Sahaya Senthamil , Vairamani Rajasekaran 
Published: September 2016

Purpose
The purpose of this paper is to analyze the performance of LCLC resonant converter (RC) with proportional integral controller and fuzzy gain scheduled proportional integral controller.

Design/methodology/approach
The drawbacks of series RC and parallel resonant converter (PRC) are explained using relevant references in Section 1 of this paper. The necessity of RCs and the merits of zero voltage and zero current switching are given in the Section 2. In Section 3, the modeling of LCLC RC using state space technique is done. In Section 4, the open loop analysis and performance evaluation of proportional integral controller, fuzzy gain scheduled proportional controller using MATLAB Simulink is obtained. The hardware specification is given and experimental results are taken for LCLC RC. In Section 5, conclusion of study is given.

Findings
The LCLC RC overcomes the drawbacks of series and PRC. The fuzzy gain scheduled proportional integral controller is suitable for load variations in RC.

Originality/value
The output of the converter is not affected with the load variations since the controller suggested in the paper works for load changes and can be a solution for load parameter deviation applications. Also performance of the RC is improved by the fast response of the proposed controller.
Design and analysis of isolated and non-isolated bidirectional converter for high voltage applications
Authors: Ramya K.C. , Jegathesan V. 
Published: September 2016

Purpose
A DC-DC converter plays a major role in many applications such as fuel cell, hybrid electric vehicle, renewable energy system, etc. Among these converters, the bidirectional DC-DC fly-back converters are more attractive because of their simple structure and easy control. However, the power devices present in this converter are subjected to high-voltage stresses due to the leakage inductor energy of the transformer. In order to recycle the leakage inductor energy and to minimise the voltage stress on the power devices, the purpose of this paper is to focus on the transformer less bidirectional DC-DC converter with high efficiency.

Design/methodology/approach
In order to reduce the switching loss, a few passive elements are added. The auxiliary circuit consists of a resonant inductor and resonant capacitors. This auxiliary circuit affords zero voltage switching function and cancels out the ripple component present in the main inductor current irrespective of the power flow direction.

Findings
In this work three topologies of bidirectional converters for BLDC motor are investigated and are compared in terms of mechanical power output and THD.

Originality/value
The paper presents enhanced versions of the converters.
New MRAS secondary time constant tuning for vector control of linear induction motor considering the end-effects
Authors: Benmohamed F.E. , Bousserhane I.K. , Kechich A. , Bessaih B. , Boucheta A. 
Published: September 2016

Purpose
The end-effects is a well-recognized phenomenon occurring in the linear induction motor (LIM) which makes the analysis and control of the LIM with good performance very difficult and can cause additional significant non-linearities in the model. So, the compensation of parameters uncertainties due to these effects in the control system is very necessary to get a robust speed control. The purpose of this paper is to propose a new technique of LIM end-effects estimation using the inverse rotor time constant tuning in order to compensate the flux orientation error in the indirect field-oriented control (IFOC) control law.

Design/methodology/approach
First, the dynamic model of the LIM taking into consideration the end-effects based on Duncan model is derived. Then, the IFOC for LIM speed control with end-effects compensation is derived. Finally, a new technique of LIM end-effects estimation is proposed based on the model reference adaptive system (MRAS) theory using the instantaneous active power and the estimated stator currents vector. These estimated currents are obtained through the solution of LIM state equations.

Findings
Simulations were carried out in MATLAB/SIMULINK to demonstrate the effectiveness and robustness of LIM speed control with the proposed MRAS inverse rotor time constant tuning to estimate end-effects value. The numerical validation results show that the proposed scheme permits the drive to achieve good dynamic performance, satisfactory for the estimated end-effects of the LIM model and robustness to uncertainties.

Originality/value
The end-effects causes a drop in the magnetizing, primary and the secondary inductance, requiring a more complex LIM control scheme. This paper presents a new approach of LIM end-effect estimation based on the online adaptation and tuning of the LIM inductances. The proposed scheme use the inverse rotor time constant tuning for end-effects correction in LIM vector control block.
Employee’s perspective towards strategy execution in facility management in Thailand
Authors: Thanyawatpornkul Rapeerat , Siengthai Sununta , Johri Lalit M. 
Published: September 2016

Purpose
There is limited empirical research that investigates issues related to strategy and its execution in facility management (FM) business especially in Thailand. Thus, the purpose of this study is to examine the factors influencing the execution of the strategy of FM companies located in Thailand from employees’ perspective.

Design/methodology/approach
This study used a qualitative research approach. Five FM companies, both foreign and Thai firms, were selected as case studies in this research because of information accessibility and their leading position and reputation in the FM industry in Thailand. The interviews were conducted with the companies’ Chief Executive Officers (CEOs), directors, managers, officers, engineers, technicians and administrators.

Findings
The findings indicate that communication, training and development, as well as reward and recognition, are the three main and critical factors in executing the company’s strategy from the employees’ perspective in the FM business.

Social implications
This study suggests that strategy execution should be built upon a long-term relationship with employees, and company management should recognize the employees’ contribution to the company. Management should also raise employees’ knowledge and understanding of the execution of the company strategy.

Originality/value
This paper provides an enhanced understanding of employees’ perspective toward strategy execution in the FM business. It offers a basis for further study of human resources practices in the context of the FM business.
A numerical investigation of dimple effects on internal heat transfer enhancement of a double wall cooling structure with jet impingement
Authors: Luo Lei , Wang Chenglong , Wang Lei , Sunden Bengt Ake , Wang Sangtao 
Published: September 2016

Purpose
The dimple is adopted into a double wall cooling structure which is widely used in hot gas components to increase the heat transfer effects with relatively low pressure drop penalty. The purpose of this paper is to study the effect of dimple depth and dimple diameter on the target surface heat transfer and the inlet to outlet friction factor.

Design/methodology/approach
The study is carried out by using the numerical simulations. The impingement flow is directly impinging on the dimple and released from the film holes after passing the double wall chamber. The ratio between dimple depth and dimple diameter is varied from 0 to 0.4 and the ratio between dimple diameter and impingement hole diameter is ranging from 0.5 to 3. The Reynolds number is between 10,000 and 70,000. Results of the target surface Nusselt number, friction factor and flow structures are included. For convenience of comparison, the double wall cooling structure without the dimple is considered as the baseline.

Findings
It is found that the dimple can effectively enhance the target surface heat transfer due to thinning of the flow boundary layer and flow reattachment as well as flow recirculation outside the dimple near the dimple rim especially for the large Re number condition. However, the stagnation point heat transfer is reduced. It is also found that for a large dimple depth or large dimple diameter, a salient heat transfer reduction occurs for the toroidal vortex. The thermal performance indicates that the intensity of the heat transfer enhancement depends upon the dimple depth and dimple diameter

Originality/value
This is the first time to adopt a dimple into a double wall cooling structure. It suggests that the target surface heat transfer in a double wall cooling structure can be increased by the use of the dimple. However, the heat transfer characteristic is sensitive for the different dimple diameter and dimple depth which may result in a different flow behavior
Non-uniform mass transfer in MHD mixed convection flow of water over a sphere with variable viscosity and Prandtl number
Authors: Rajakumar J. , Saikrishnan P. , Chamkha A. 
Published: September 2016

Purpose
The purpose of this paper is to consider axisymmetric mixed convection flow of water over a sphere with variable viscosity and Prandtl number and an applied magnetic field.

Design/methodology/approach
The non-similar solutions have been obtained from the origin of the streamwise co-ordinate to the point of zero skin friction using quasilinearization technique with an implicit finite-difference scheme.

Findings
The effect of M is not notable on the temperature and heat transfer coefficient when λ is large. The skin friction coefficient and velocity profile are enhance with the increase of MHD parameter M when λ is small. Viscous dissipation has no significant on the skin friction coefficient under MHD effect. For M=1, the movement of the slot or slot suction or slot injection do not cause any effect on flow separation. The slot suction and the movement of the slot in downstream direction delay the point of zero skin friction for M=0.

Originality/value
The present results are original and new for water boundary-layer flow over sphere in mixed convection flow with MHD effect and non-uniform mass transfer. So this study would be useful in analysing the skin friction and heat transfer coefficient on sphere of mixed convection flow of water boundary layer with MHD effect.
Wind tunnel experimental investigations of a diffuser augmented wind turbine model
Authors: Olasek Krzysztof , Karczewski Maciej , Lipian Michal , Wiklak Piotr , Józwik Krzysztof 
Published: September 2016

Purpose
A solution to increase the energy production rate of the wind turbine is proposed by forcing more air to move through the turbine working section. This can be achieved by equipping the rotor with a diffusing channel ended with a brim (diffuser augmented wind turbine – DAWT). The purpose of this paper is to design an experimental stand and perform the measurements of velocity vector fields through the diffuser and power characteristic of the wind turbine.

Design/methodology/approach
The experiments were carried out in a small subsonic wind tunnel at the Institute of Turbomachinery, Lodz University of Technology. An experimental stand design process as well as measurement results are presented. Model size sensitivity study was performed at the beginning. The experimental campaign consisted of velocity measurements by means of particle image velocimetry (PIV) and pneumatic pitot probe as well as torque and rotational velocity measurements.

Findings
Characteristics (power coefficient vs tip speed ratio) of the bare and shrouded wind turbine were obtained. The results show an increase in the wind turbine power up to 70-75 per cent by shrouding the rotor with a diffuser. The mechanisms responsible for such a power increase were well explained by the PIV and pneumatic measurement results revealing the nature of the flow through the diffuser.

Research limitations/implications
Experimental stand for wind turbine rotor testing is of a preliminary character. Most optimal methodology for obtaining power characteristic should be determined now. Presented results can serve as good input for choice of stable and reliable control system of wind turbine operational parameters.

Practical implications
A 3 kW DAWT is being developed at the Institute of Turbomachinery, Lodz University of Technology. Aim of the study is to design a compact and smart wind turbine optimised for low wind speed conditions. Developed wind turbine has a potential to be used as an effective element within a net of distributed generation, e.g. for domestic use.

Originality/value
Research carried out is the continuation of theoretical study began in 1970s. It was also inspired by practical solutions proposed by Japanese researchers few years ago. Presented paper is the summary of work devoted to optimisation of the DAWT for wind conditions in the region. Original solution has been applied, e.g. for experimental stand design (3D printing application).
Mach number effects on buffeting flow on a half wing-body configuration
Authors: Sartor Fulvio , Timme Sebastian 
Published: September 2016

Purpose
The purpose of this paper is to discuss a numerical study of the flow over a wing representative of a large civil aircraft at cruise condition. For each Mach number considered, the numerical simulations indicate that critical angle of attack exists where the separated region increases in size and begins to oscillate. This phenomenon, known as transonic shock buffet, is reproduced by the unsteady simulation and much information can be extracted analysing location, amplitude and frequency content of the unsteadiness.

Design/methodology/approach
Reynolds-averaged Navier-Stokes simulations are conducted on a half wing-body configuration, at different Mach numbers and angles of attack. Different turbulence models are considered, and both steady-state results and time-accurate simulations are discussed.

Findings
The high number of cases presented in this study allows the creation of a database which, to the authors’ knowledge, has not been documented in literature before. The results indicate that, while high-fidelity approaches can improve the quality of the results, the URANS approach is capable of describing the main features of the buffet phenomenon.

Research limitations/implications
The presence of a turbulence model, despite allowing the description of the main unsteady phenomenon, might be insufficient to fully characterise the unsteadiness present in a transonic flow over a half wing-body configuration. Therefore, researchers are encouraged to verify by means of experimental investigation or high-fidelity approach the results issued from a Reynolds-averaged Navier-Stokes equations.

Practical implications
The results presented clearly indicate that, despite what proposed in recent research papers, transonic buffet can be described by means of time-accurate Reynolds-averaged Navier-Stokes equations. Such an approach is popular in the aeronautical industry because of its reduced costs, and could be used for wing design.

Originality/value
In this paper, the authors used a classical approach to tackle the known problem of transonic buffet in three-dimensional configurations. The large number of results presented can be used as a database for future numerical simulations and experiments, and allow to describe the flow-physics of the buffet unsteadiness on a half wing-body configuration.
Modal analysis of jet near-field pressure fluctuation
Authors: Brazier Jean-Philippe , Huet Maxime , Léon Olivier , Itasse Maxime 
Published: September 2016

Purpose
Unstable Kelvin-Helmholtz waves are suspected to be responsible for a large part of low-frequency noise radiation in high-speed jets. The purpose of this paper is to check the coherence of numerical and experimental data concerning this phenomenon, in the particular case of a cold subsonic jet.

Design/methodology/approach
In the present work, a cross-investigation of the near pressure field is performed on three different data sets: large-eddy simulation (LES) computations, parabolised stability equations (PSE) semi-modal computations and microphone measurements, in order to determine the local amplitudes of unstable waves.

Findings
The large coherent structures are found in both LES and experimental results and they are also in good agreement with direct semi-modal computations carried out with the PSE approach.

Originality/value
This work confirms that the unstable wave packets can be extracted from both LES and experimental results, provided that an appropriate modal decomposition is performed.
Rights, welfare and morality
Authors: Terao Hanno 
Published: September 2016

Purpose
The purpose of this paper is to clarify how L.T. Hobhouse (1864-1929) theoretically contributed to the British New Liberalism, focusing particularly on the issue of social reform in turn-of-the-century Britain.

Design/methodology/approach
The question is approached in two ways: by exploring the theoretical structure of Hobhouse’s ethical theory (which can be termed an “ethics of harmony”) through a textual analysis of his rights theory and distributive theory; and by comparing that ethical theory with that of J.S. Mill, T.H. Green and J.A. Hobson so as to identify their commonalities and differences.

Findings
It is found that Hobhouse’s contribution to the New Liberalism was twofold, both of which grew out of his staunchly moralistic perspective. Hobhouse showed in his rights theory a direction towards which the morality of individuals should be developed; and provided a guideline based on a notion of justice for wealth redistribution by the state which he saw as a necessary external condition for realizing such development.

Originality/value
Existing literature on the British New Liberalism has paid less attention to Hobhouse than it has to T.H. Green and J.A. Hobson. Hobhouse has been relatively neglected due to a wide-spread view that his role was mainly in his expressing a typical but not necessarily original direction for the transformation of British Liberalism at the turn of the century. Against this received view, this paper demonstrates that Hobhouse made a significant contribution to the socio-political thinking of the New Liberalism by providing a distinctive ethical theory of harmony, which enabled New Liberal protagonists to address the important issue of the conceptual place of individual morality within a programme of collectivist social reform.
Higher education for sustainable development: a systematic review
Authors: Wu Yen-Chun Jim , Shen Ju-Peng 
Published: September 2016

Purpose
This study aims to provide a complete understanding of academic research into higher education for sustainable development (HESD).

Design/methodology/approach
This study utilizes a systematic review of four scientific literature databases to outline topics of research during the UN’s Decade of Education for Sustainable Development (DESD).

Findings
This study compares research trends and United Nations Educational, Scientific and Cultural Organization’s (UNESCO’s) strategic perspectives, worldwide topics and the number of studies. The results show that the research trends did not match UNESCO’s perspectives well and that researchers’ focus on popular events led to the variation between the numbers of articles each year. In summary, the findings indicate that most researchers base their topics on environmental issues, and research trends indicate the need for the integration of HESD.

Practical implications
This study provides a systematic review of higher education for academic research into sustainability, and it has implications for researchers and educators by identifying the gaps between the research conducted and the UN’s policies during the DESD.

Originality/value
This study attempts to offer an integrated view of HESD and to understand the bias of research trends during the DESD.