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1 – 10 of 246N. Hamzah, M.H. Samat, N.A. Johari, A.F.A. Faizal, O.H. Hassan, A.M.M. Ali, R. Zakaria, N.H. Hussin, M.Z.A. Yahya and M.F.M. Taib
The purpose of this paper is to investigate the structural, electronic and optical properties of pure zinc oxide (ZnO) and transition metal (Tm)-doped ZnO using Tm elements from…
Abstract
Purpose
The purpose of this paper is to investigate the structural, electronic and optical properties of pure zinc oxide (ZnO) and transition metal (Tm)-doped ZnO using Tm elements from silver (Ag) and copper (Cu) by a first-principles study based on density functional theory (DFT) as implemented in the pseudo-potential plane wave in CASTEP computer code.
Design/methodology/approach
The calculations based on the generalized gradient approximation for Perdew-Burke-Ernzerhof for solids with Hubbard U (GGA-PBEsol+U) were performed by applying Hubbard corrections Ud = 5 eV for Zn 3d state, Up = 9 eV for O 2p state, Ud = 6 eV for Ag 4d state and Ud = 9.5 eV for Cu 3d state. The crystal structure used in this calculation was hexagonal wurtzite ZnO with a space group of P63mc and supercell 2 × 2 × 2.
Findings
The total energy was calculated to determine the best position for Ag and Cu dopants. The band structures and density of states show that Tm-doped ZnO has a lower bandgaps value than pure ZnO because of impurity energy levels from Ag 4d and Cu 3d states. In addition, Ag-doped ZnO exhibits a remarkable enhancement in visible light absorption over pure ZnO and Cu-doped ZnO because of its lower energy region and extended wavelength spectrum.
Originality/value
The results of this paper are important for the basic understanding of the 3d and 4d Tm doping effect ZnO and have a wide range of applications in designing high-efficiency energy harvesting solar cells.
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Martin Götz and Ernest H. O’Boyle
The overall goal of science is to build a valid and reliable body of knowledge about the functioning of the world and how applying that knowledge can change it. As personnel and…
Abstract
The overall goal of science is to build a valid and reliable body of knowledge about the functioning of the world and how applying that knowledge can change it. As personnel and human resources management researchers, we aim to contribute to the respective bodies of knowledge to provide both employers and employees with a workable foundation to help with those problems they are confronted with. However, what research on research has consistently demonstrated is that the scientific endeavor possesses existential issues including a substantial lack of (a) solid theory, (b) replicability, (c) reproducibility, (d) proper and generalizable samples, (e) sufficient quality control (i.e., peer review), (f) robust and trustworthy statistical results, (g) availability of research, and (h) sufficient practical implications. In this chapter, we first sing a song of sorrow regarding the current state of the social sciences in general and personnel and human resources management specifically. Then, we investigate potential grievances that might have led to it (i.e., questionable research practices, misplaced incentives), only to end with a verse of hope by outlining an avenue for betterment (i.e., open science and policy changes at multiple levels).
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Przemysław G. Hensel and Agnieszka Kacprzak
Replication is a primary self-correction device in science. In this paper, we have two aims: to examine how and when the results of replications are used in management and…
Abstract
Purpose
Replication is a primary self-correction device in science. In this paper, we have two aims: to examine how and when the results of replications are used in management and organization research and to use the results of this examination to offer guidelines for improving the self-correction process.
Design/methodology/approach
Study 1 analyzes co-citation patterns for 135 original-replication pairs to assess the direct impact of replications, specifically examining how often and when a replication study is co-cited with its original. In Study 2, a similar design is employed to measure the indirect impact of replications by assessing how often and when a meta-analysis that includes a replication of the original study is co-cited with the original study.
Findings
Study 1 reveals, among other things, that a huge majority (92%) of sources that cite the original study fail to co-cite a replication study, thus calling into question the impact of replications in our field. Study 2 shows that the indirect impact of replications through meta-analyses is likewise minimal. However, our analyses also show that replications published in the same journal that carried the original study and authored by teams including the authors of the original study are more likely to be co-cited, and that articles in higher-ranking journals are more likely to co-cite replications.
Originality/value
We use our results to formulate recommendations that would streamline the self-correction process in management research at the author-, reviewer- and journal-level. Our recommendations would create incentives to make replication attempts more common, while also increasing the likelihood that these attempts are targeted at the most relevant original studies.
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Martin Langner and David Sanders
Simple and affordable systems are described to assist wheelchair users in steering their wheelchairs across sloping ground. The systems can be attached to many standard powered…
Abstract
Simple and affordable systems are described to assist wheelchair users in steering their wheelchairs across sloping ground. The systems can be attached to many standard powered wheelchairs. Wheelchairs often steer by having two swivelling caster wheels but problems with this configuration occur when a wheelchair is driven along sloping ground because the casters can swivel in the direction of the slope. Gravity then causes the wheelchair to start an unwanted turn or ‘veer’ and the chair goes in an unintended direction. This situation is exacerbated for switch users, as switches cannot provide fine control to trim and compensate. Early experiments demonstrated that calibrating wheelchair controllers for straight‐line balance and optimising motor‐compensation did not solve this problem. Caster angle was selected to provide feedback to the wheelchair controllers. At the point when veer is first detected, a wheelchair has already begun to alter course and the job of the correction system is to minimise this drift from the desired course. A rolling road was created as an assessment tool and trials with both the test bed and in real situations were conducted to evaluate the new systems. The small swivel detector that was created could be successfully attached to caster swivel bearings. The new system was successful, robust and was not affected by changeable parameters. Although primarily intended for switch users, the methods can be applied to users with proportional controls.
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Current publication practices in the scholarly (International) Business and Management community are overwhelmingly anti-Popperian, which fundamentally frustrates the production…
Abstract
Purpose
Current publication practices in the scholarly (International) Business and Management community are overwhelmingly anti-Popperian, which fundamentally frustrates the production of scientific progress. This is the result of at least five related biases: the verification, novelty, normal science, evidence, and market biases. As a result, no one is really interested in replicating anything. In this essay, the author extensively argues what he believes is wrong, why that is so, and what we might do about this. The paper aims to discuss these issues.
Design/methodology/approach
This is an essay, combining a literature review with polemic argumentation.
Findings
Only a tiny fraction of published studies involve a replication effort. Moreover, journal authors, editors, reviewers and readers are not interested in seeing nulls and negatives in print. This replication crisis implies that Popper’s critical falsification principle is actually thrown into the scientific community’s dustbin. Behind the façade of all these so-called new discoveries, false positives abound, as do questionable research practices meant to produce all this allegedly cutting-edge and groundbreaking significant findings. If this dismal state of affairs does not change for the good, (International) Business and Management research is ending up in a deadlock.
Research limitations/implications
A radical cultural change in the scientific community, including (International) Business and Management, is badly needed. It should be in the community’s DNA to engage in the quest for the “truth” – nothing more, nothing less. Such a change must involve all stakeholders: scholars, editors, reviewers, and students, but also funding agencies, research institutes, university presidents, faculty deans, department chairs, journalists, policymakers, and publishers. In the words of Ioannidis (2012, p. 647): “Safeguarding scientific principles is not something to be done once and for all. It is a challenge that needs to be met successfully on a daily basis both by single scientists and the whole scientific establishment.”
Practical implications
Publication practices have to change radically. For instance, editorial policies should dispose of their current overly dominant pro-novelty and pro-positives biases, and explicitly encourage the publication of replication studies, including failed and unsuccessful ones that report null and negative findings.
Originality/value
This is an explicit plea to change the way the scientific research community operates, offering a series of concrete recommendations what to do before it is too late.
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This study focused on analysing the effect of acquisition characteristics on post‐acquisition operating performance for 83 bids consisting of 83 public listed bidders acquiring 80…
Abstract
This study focused on analysing the effect of acquisition characteristics on post‐acquisition operating performance for 83 bids consisting of 83 public listed bidders acquiring 80 private, 2 public listed and 1 non‐public listed targets in Malaysia during the period 1988–1992. The specific bid characteristics analysed are business relatedness, management turnover, the relative size of targets to bidders, the method of payment offered and board of directors' ownership structure. Since the specific feature of the current sample is that it consists mainly of privately owned targets, the characteristics of disciplinary bids found in acquisitions of public listed targets were not expected in agreed bids between the bidders and targets in this study. The results indicate that the target directors' turnover and the directors' share ownership do not have a significant effect on the post‐acquisition performance. Rather it appears that, if anything, retention of existing management is more likely to lead to performance improvement. Further analysis shows that replacement of target management has no impact on post‐acquisition performance regardless of the relatedness line of business. The latter findings reinforce the unique characteristics of the data set used in the current analysis of acquisitions of privately owned Malaysian companies in which unique skills of previous directors may often be retained post‐acquisition regardless of the business relatedness. The study also provides evidence that acquisitions of highly related business between target and acquiring firm, large relative size of target to bidders and payment for the acquisition by shares have a significant positive impact on post‐acquisition control‐adjusted performance. However, highly related business between target and bidder and payment by shares are the only significant acquisition characteristics that have a significant positive impact on the post‐acquisition control‐adjusted performance when multiple regression is used.
Sebastian Lehmann and Paul Bengart
The purpose of this paper is to highlight the role of replications for science, and in particular the knowledge development process.
Abstract
Purpose
The purpose of this paper is to highlight the role of replications for science, and in particular the knowledge development process.
Design/methodology/approach
Descriptive research on the disclosure of sample parameters which are needed for replication was conducted. The analysis includes 2,982 studies from four top-tier marketing journals.
Findings
Published parameters are insufficient for replication and, therefore, impede knowledge development.
Originality/value
The paper offers a unique data set for further investigation. In total, 2,982 studies from the defined journals (Journal of Consumer Research, Journal of Marketing, Journal of Marketing Research and Marketing Science) were analyzed. Hereby this paper enables insights into reporting practices of current marketing research and highlights the role of replication research in validating earlier research. It empirically shows, to the authors' best knowledge for the first time, that the insufficient reporting is one of the major reasons for the lack of replications.
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Heather Leutwyler, Erin Hubbard and Elaine Zahnd
The purpose of this paper is to discuss how case management can decrease recidivism for people with serious mental illness (SMI) because people with SMI are at high risk for…
Abstract
Purpose
The purpose of this paper is to discuss how case management can decrease recidivism for people with serious mental illness (SMI) because people with SMI are at high risk for incarceration and recidivism.
Design/methodology/approach
Examples of successful case management models for formerly incarcerated individuals with SMI found through a secondary analysis of qualitative data and an analysis of the literature are presented.
Findings
Currently, no international, national, or statewide guidelines exist to ensure that formerly incarcerated individuals with SMI receive case management upon community reentry despite evidence that such services can prevent further criminal justice involvement. Recommendations include establishment of and evaluation of best practices for case management. In addition, the authors recommend additional funding for case management with the goal of greatly increasing the number of individuals with SMI leaving the criminal justice system in their ability to access adequate case management.
Originality/value
Providing effective case management tailored to the needs of formerly incarcerated people with SMI improves their quality of life and reduces their involvement in the criminal justice system with clear positive outcomes for public safety and public health.
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A considerable proportion of donor aid is dedicated to technical assistance to support developing countries in their development initiatives. The majority of this aid comes from…
Abstract
A considerable proportion of donor aid is dedicated to technical assistance to support developing countries in their development initiatives. The majority of this aid comes from globally-operating international donors including the World Bank and the European Union. In spite of several harmonization attempts, there still exist major differences in their procurement regulations and standard contracts. Based on an extensive literature review on consulting services and an in-depth analysis of the standard forms of contract, it was found that divergence between both forms is not only clear but also paradigmatic owing mainly to market orientation paradigm differences. The findings and recommendations help advance research on and practice of various types of consultancy services in general.
The purpose of this study is to examine two issues, namely the degree of current account deficit (CAD) sustainability and the degree of capital mobility.
Abstract
Purpose
The purpose of this study is to examine two issues, namely the degree of current account deficit (CAD) sustainability and the degree of capital mobility.
Design/methodology/approach
The sample for this study comprises 24 Latin American and Caribbean countries, including three regional agreements: Andean Community, MERCOSUR (Mercado Común del Sur), and SICA (Central American Integration System). This study employs the dynamic common correlated effects mean group (DCCEMG) estimator in a panel data set to investigate the long-run relationship between savings and investment along with short-run dynamics.
Findings
The findings indicate that CAD is weakly sustainable in the Latin American and Caribbean region, MERCOSUR, and SICA, while CAD is strongly unsustainable in the Andean Community. The sub-period analysis reveals that CAD has been adversely affected by the 2008 crisis. However, in the post-crisis period, CAD has been slowly decreasing in the Latin American and Caribbean region and Andean Community, whereas CAD has continued increasing in MERCOSUR and SICA. Further, the estimates of error-correction terms and short-run coefficients indicate that the Andean Community and MERCOSUR observe a higher degree of long-run and short-run capital mobility than SICA.
Practical implications
The results carry fundamental implications for policy-making processes aimed at maintaining sustainable CADs.
Originality/value
This study gives an alternative interpretation of the “Feldstein-Horioka” coefficient in terms of CAD sustainability and analyses the saving–investment relationship in light of Chudik and Pesaran (2015).
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