bluuebunny/crossref_metadata_2025_split huggingface dataset:
Design of a novel triple-band monopole antenna for WLAN/WiMAX MIMO applications in the laptop computer
Authors: Kulkarni Jayshri Sharad , Seenivasan Raju 
Published: September 2019

Purpose
This paper aims to present a triple-band monopole antenna design of 0.2-mm thickness with an overall dimension of 21 × 8 mm2 for wireless local area network (WLAN)/worldwide interoperability for microwave access (WiMAX) multiple input and multiple output (MIMO) applications in the laptop computer.

Design/methodology/approach
It comprises three monopole radiating elements, namely, strip AD (inverted C), strip EG (inverted J) and strip FI (inverted U) along with two rectangular open-end tuning stubs, namely, “m” and “n” of size 1.5 × 0.9 mm2 and 1.8 × 0.9 mm2, respectively. The proposed structure is compact, cost-effective and easy to integrate inside the laptop computers.

Findings
This structure excites three WLAN (2.4/5.2/5.8 GHz) and three WiMAX (2.3/3.3/5.5 GHz) bands. The proposed antenna array elucidates that it has measured −10dB impedance bandwidth of 11.86 per cent (2.22-2.50) GHz in a lower band (f_l), 6.83 per cent (3.25-3.48) GHz in medium band (f_m) and 16.84 per cent (5.00-5.92) GHz in upper band (f_u). The measured gain and radiation efficiency are above 3.64dBi and 75 per cent, respectively, and isolation better than −20dB. The envelope correlation coefficient (ECC) is less than 0.004. The simulated and measured results are in good concurrence, which confirms the applicability of the proposed antenna array for MIMO applications in the laptop computer.

Originality/value
The proposed antenna is designed without using vias, reactive elements and matching circuits for excitation of WLAN/WiMAX bands in the laptop computers. The design also does not require any additional ground for mounting the antenna. Further, the antenna array, formed by using the same antenna design, does not need additional isolating elements and is designed in such a way that the system ground itself acts as an isolating element. The proposed antenna has a low profile and is ultra-thin, cost-effective and easy to manufacture and can be easily embedded inside the next-generation laptop computers.
An interpolating meshless method for the numerical simulation of the time-fractional diffusion equations with error estimates
Authors: Wang Jufeng , Sun Fengxin 
Published: September 2019

Purpose
This paper aims to present an interpolating element-free Galerkin (IEFG) method for the numerical study of the time-fractional diffusion equation, and then discuss the stability and convergence of the numerical solutions.

Design/methodology/approach
In the time-fractional diffusion equation, the time fractional derivatives are approximated by L1 method, and the shape functions are constructed by the interpolating moving least-squares (IMLS) method. The final system equations are obtained by using the Galerkin weak form. Because the shape functions have the interpolating property, the unknowns can be solved by the iterative method after imposing the essential boundary condition directly.

Findings
Both theoretical and numerical results show that the IEFG method for the time-fractional diffusion equation has high accuracy. The stability of the fully discrete scheme of the method on the time step is stable unconditionally with a high convergence rate.

Originality/value
This work will provide an interpolating meshless method to study the numerical solutions of the time-fractional diffusion equation using the IEFG method.
Dimension-adaptive algorithm-based PCE for models with many model parameters
Authors: Li Yangtian , Li Haibin , Wei Guangmei 
Published: September 2019

Purpose
To present the models with many model parameters by polynomial chaos expansion (PCE), and improve the accuracy, this paper aims to present dimension-adaptive algorithm-based PCE technique and verify the feasibility of the proposed method through taking solid rocket motor ignition under low temperature as an example.

Design/methodology/approach
The main approaches of this work are as follows: presenting a two-step dimension-adaptive algorithm; through computing the PCE coefficients using dimension-adaptive algorithm, improving the accuracy of PCE surrogate model obtained; and applying the proposed method to uncertainty quantification (UQ) of solid rocket motor ignition under low temperature to verify the feasibility of the proposed method.

Findings
The result indicates that by means of comparing with some conventional non-invasive method, the proposed method is able to raise the computational accuracy significantly on condition of meeting the efficiency requirement.

Originality/value
This paper proposes an approach in which the optimal non-uniform grid that can avoid the issue of overfitting or underfitting is obtained.
Review of global mental health research in the construction industry
Authors: Nwaogu Janet M. , Chan Albert P.C. , Hon Carol K.H. , Darko Amos 
Published: September 2019

Purpose
The demanding nature of the construction industry poses strain that affects the health of construction personnel. Research shows that mental ill health in this industry is increasing. However, a review mapping the field to determine the extant of research is lacking. Thus, the purpose of this paper is to conduct a scientometric review of mental health (MH) research in the construction industry.

Design/methodology/approach
A total of 145 bibliographic records retrieved from Web of Science and Scopus database were analyzed using CiteSpace, to visualize MH research outputs in the industry.

Findings
Top co-cited authors are Helen Lingard, Mei-yung Leung, Paul Bowen, Julitta S. Boschman, Peter E.D. Love, Martin Loosemore and Linda Goldenhar. Previous studies focused on healthy eating, work efficiency, occupational stress and workplace injury. Emerging research areas are centered around physiological health monitoring, work ability, and smart interventions to prevent and manage poor MH.

Research limitations/implications
Result is influenced by the citations in retrieved articles.

Practical implications
The study found that researchers in the construction industry have intensified efforts to leverage information technology in improving the health, well-being, and safety of construction personnel. Future research should focus on developing workplace interventions that incorporate organizational justice and flexible work systems. There is also a need to develop psychological self-reporting scales specific to the industry.

Originality/value
This study enhances the understanding of researchers on existing collaboration networks and future research directions. It provides information on foundational documents and authors whose works should be consulted when researching into this field.
Obstacles of innovation and institutional support in the cooperation agreements
Authors: Arranz N. , F. Arroyabe Marta , Fernandez de Arroyabe Juan Carlos 
Published: September 2019

PurposeThe purpose of this paper is to analyze the effects of obstacles and institutional factors on the cooperation for innovation. The collaboration between different types of organizations has been seen as a strategy that allows the firms to obtain reciprocal benefits, and that incentivises innovation. However, following D’Esteet al.(2012) and Antonioliet al.(2017), the authors assume that the decision to cooperate is perceived as a strategy to overcome the obstacles and barriers of the innovation process.Design/methodology/approachThe authors analyze these questions in the frame of the PITEC-2013 data that covers the period 2012–2013 and includes 5,461 Spanish innovative companies.FindingsThe results support that an important drive for the firm’s cooperation is to overcome the obstacles of the innovation process. Moreover, the type of partner for cooperation is influenced by the different perception that those companies have on the obstacles to innovation. Additionally, results contribute to the regional literature with new empirical evidence to characterize regions in terms of innovation. Such factors shed new light about the intensity of regional innovation and variables of the cooperation pattern.Originality/valueConsidering that a fourth of the Spanish companies develop technological cooperation agreements (PITEC, 2013), it is still observed that the level of cooperation and their results are lower with respect to other countries in the environment, therefore to analyze the role of cooperation agreements, evaluating the factors that characterize the dynamics of these agreements, is a critical research question for the Spanish economy.
Impact of national culture on organizations’ use of selection practices
Authors: Prince Nicholas Ryan , Kabst Rüdiger 
Published: September 2019

PurposeThe purpose of this paper is to investigate the impact of national culture on organizations’ use of selection practices, specifically to investigate the impact of in-group collectivism, uncertainty avoidance and power distance on interview panels, one-on-one interviews, applications forms, references, ability, technical and psychometric tests.Design/methodology/approachThis study uses survey data from the 2008–2010 CRANET database. It uses OLS regression analysis to test the impact of national culture on organizations’ use of selection practices.FindingsIn-group collectivism increases the use of panel interviews and technical tests, and decreases the use of one-on-one interviews and application forms. Uncertainty avoidance increases the use of panel interviews and technical tests, and a decrease in one-on-one interviews, applications ability, and psychometric tests. Power distance leads to an increase in one-on-one interviews, applications and ability tests, and a decrease in panel interviews, psychometric tests and references.Originality/valueThis paper investigates the use of the impact of national culture on selection practices. Specifically, it looks at the use of a large number of selection practices panel interviews, one-on-one interviews, applications and references, and several different tests, ability, technical and psychometric.
Why is informal employment more common in some countries? An exploratory analysis of 112 countries
Authors: Williams Colin Charles , Horodnic Adrian Vasile 
Published: September 2019

PurposeThe purpose of this paper is to evaluate competing explanations for the greater prevalence of informal employment in some countries rather than others. These variously explain informal employment to be a result of either economic under-development and the lack of modernisation of governance (“modernisation” theory), higher taxes and too much state intervention (“neo-liberal” theory) or inadequate government intervention to protect workers from poverty (“political economy” theory).Design/methodology/approachTo do this, an International Labour Organisation data base produced in 2018 on the prevalence of informal employment in 112 countries (comprising 90 per cent of the global workforce) is analysed, and macro-level economic and social conditions reflecting each of these theories tested using bivariate regressions.FindingsThe prevalence of informal employment ranges from 94.6 per cent of total employment in Burkina Faso to 1.2 per cent in Luxembourg. Evaluating the validity of the competing theories, neo-liberal theory is refuted, and a call made to synthesise the modernisation and political economy perspectives in a new “neo-modernisation” theory that tentatively associates the greater prevalence of informal employment with lower economic under-development, greater levels of public sector corruption, smaller government and lower levels of state intervention to protect workers from poverty.Practical implicationsThis paper tentatively reveals the structural economic and social conditions that need to be addressed globally to reduce informal employment.Originality/valueThis is the first paper to report the results of a harmonised data set based on common criteria to measure the varying prevalence of informal employment globally (across 112 countries representing 90 per cent of global employment) in order to determine the structural economic and social conditions associated with higher levels of informal employment.
Bullying effects on performance and engagement among academics
Authors: Meriläinen Matti , Kõiv Kristi , Honkanen Anu 
Published: September 2019

PurposeThe purpose of this paper is to examine relationships between perceived bullying, work engagement and work performance among Estonian academics. Specifically, it details what forms of bullying affect work engagement and performance. Moreover, the study explores the relationship between engagement and performance among bullied academics.Design/methodology/approachA total of 864 faculty members from nine Estonian universities participated in an e-mail survey in Spring 2014. Bullying was measured using the Negative Acts Questionnaire-Revised (NAQ-R22), and work engagement was assessed using the nine-item Utrecht Work Engagement Scale. Respondents’ perceived performance and productivity were measured on a ten-point rating scale. Structural equation modelling was used to analyse the relationship between bullying, engagement and performance.FindingsPerceived bullying – especially “professional understating” – decreased work engagement and work performance among Estonian academics. The decrease in performance preceded the decrease in engagement or vice versa. The decrease in engagement was followed by lowered performance.Research limitations/implicationsA longitudinal study is needed to prove the specific one-way effect of (decreased) performance (because of perceived bullying) on engagement.Practical implicationsPreventing bullying and further increasing engagement and performance among Estonian academics requires getting out of policy of professional understating.Social implicationsThe authors need to determine why Estonian academics experience professional understating, which includes being ordered to perform tasks below one’s level of competence and having key areas of responsibility removed or replaced with more trivial or unpleasant tasks.Originality/valueThe present results prove that it is possible to differentiate between specific forms of bullying in a specific context and further reveal those factors specifically that affect work performance and work engagement. Among Estonian academics – revealed in this study – “professional understating” seems to be such a factor.
High-commitment organization and employees’ job performance
Authors: Yan Jiaqi , Luo Jinlian , Jia Jianfeng , Zhong Jing 
Published: September 2019

PurposeThe purpose of this paper is to explore the mechanisms by which high-commitment organization is associated with employees’ job performance through the perspective of taking charge and the perceived strength of the human resource management (HRM) system.Design/methodology/approachBased on conservation of resources (COR) theory, the authors used two-wave survey data from 200 supervisor-subordinates pairs in China. This study uses hierarchical linear regression and bootstrapping method to analyze the mediated moderation effect.FindingsThe authors found that perceived high-commitment organization and perceived strength of the HRM system interact in predicting employees’ taking charge behavior, such that perceived high-commitment organization is more positively associated with taking charge when the perceived strength of the HRM system is high rather than low. In addition, taking charge mediates the relationship between interactive effects of perceived high-commitment organization and the perceived strength of the HRM system on employees’ job performance.Originality/valueThis study extended the high-commitment organization from the perspective of individual perception based on the COR theory and regard perceived high-commitment organization as an organizational resource.
Career adaptability and active job search behavior of Korean older workers
Authors: Lim Doo Hun , Kim Woocheol , Shin Heh Youn 
Published: September 2019

PurposeThe purpose of this paper is to examine the mediating role of the attitudes toward seeking professional psychological help between career adaptability and active job search behavior of older workers in South Korea.Design/methodology/approachFrom a review of related literature, six study hypotheses were developed to test the structural relationship between the variables.FindingsThis study identified that attitudes toward seeking professional psychological help mediated the relationship between career adaptability, the value of career coaching and active job search behavior.Practical implicationsA successful job search requires the use of substantial self-control and self-regulation skills, and there can be effective training in all these skills of self-disciplining when older workers can find a high level of value from career coaching programs.Originality/valueDespite the growing popularity of career support programs, the quality of career coaching programs and participants’ perceived value toward them are critical to illicit positive outcomes of such programs. This study supports this premise by revealing a structural relationship between career adaptability, perceived value of career coaching, attitudes toward seeking professional career help and active job search behavior.
Profits, financial leverage and corporate governance
Authors: Butt Umar 
Published: September 2019

PurposeThe purpose of this paper is to identify the impact of governance structures in defining the relationship between profits and leverage.Design/methodology/approachThe paper uses the standard design used by Fama and French (2002) and employs it under different governance structures. It is the first to identify the endogenous nature of the relationship between profits and leverage, compounded by the endogeneity of governance. The paper uses the instrumental variable (IV) technique to control for endogeneity and recommends a novel approach to control for multiple endogenous regressors.FindingsThe results demonstrate that firms operating under good governance verify the predictions of the trade-off theory of capital structure and that the evidence of negative relation in the literature is a subset of management inefficiency. The results are consistent after controlling for endogeneity and are robust to alternative iteration of governance. The activity in debt issuance and retirement supports the conclusion that firms with good governance structures actively seek an optimal capital structure corresponding to profits.Originality/valueThis study adds value to existing literature. It is the first to identify the importance of governance in defining the relationship between profits and leverage. It recognizes unaccounted endogeneity concerns and employs an inspired IV approach to control for feedback from multiple endogenous regressors. Evidence for capital structure adjustment by firms with good governance is also substantiated. Lastly, the first unqualified evidence for the trade-off model is provided.
Religiosity, values and consumer behaviour: a study of young Indian Muslim consumers
Authors: Islam Tajamul , Chandrasekaran Uma 
Published: September 2019

PurposeThis paper aims to examine the relationship between religiosity and consumer values, religiosity and consumer decision making styles (CDMS), and the mediating role of consumer values in the relationship between religiosity and CDMS among young Indian Muslim consumers.Design/methodology/approachData were collected from 487 young Muslim consumers across three states of India through a survey using a structured questionnaire. The data were analysed by using the techniques of exploratory factor analysis and structural equation modelling.FindingsReligiosity negatively influenced novelty-fashion consciousness and brand consciousness decision making styles. Religiosity was found to have a significant positive relationship with the “interests of collectivities (IOC)” values and a significant negative relationship with the “interests of individual (IOI)” values. The results indicate that both “IOI” values and “IOC” values mediated the relationship between religiosity and novelty-fashion consciousness and brand consciousness.Originality/valueThe results of the study provide vital insights regarding the relationship between religiosity, values and CDMS. It provides insights about the consumption behaviour of young Muslim consumers of India who have not been studied as a consumer group.
Model and analysis of the effect of China’s potential domestic emission control area with 0.1% sulphur limit
Authors: Wang Shuaian , Peng Chuansheng 
Published: September 2019

Purpose
The purpose of this study is to analyze the effect of China’s potential domestic emission control area (DECA) with 0.1 per cent sulphur limit on sulphur emission reduction.

Design/methodology/approach
The authors calculate the fuel cost of a direct path within the DECA and a path that bypasses the DECA for ships that sail between two Chinese ports in view of the DECA. Ships adopt the path with the lower cost and the resulting sulphur dioxide (SO2) emissions can be calculated. They then conduct sensitivity analysis of the SO2 emissions with different values of the parameters related to sailing distance, fuel price and ships.

Findings
The results show that ships tend to detour to bypass the DECA when the distance between the two ports is long, the ratio of the price of low sulphur fuel and that of high sulphur fuel is high and the required time for fuel switching is long. If the time required for fuel switching is less than 12 h or even 24 h, it can be anticipated that a large number of ships will bypass the DECA, undermining the SO2 reduction effect of the DECA.

Originality/value
This study points out the size and shape difference between the emission control areas in Europe and North America and China’s DECA affects ships’ path choice and SO2 emissions.