bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modelling of temperature distribution along PCB thickness in different substrates during reflow
Authors: Straubinger Daniel , Bozsóki István , Bušek David , Illés Balázs , Géczy Attila 
Published: January 2020

Purpose
In this paper, analytical modelling of heat distribution along the thickness of different printed circuit board (PCB) substrates is presented according to the 1 D heat transient conduction problem. This paper aims to reveal differences between the substrates and the geometry configurations and elaborate on further application of explicit modelling.

Design/methodology/approach
Different substrates were considered: classic FR4 and polyimide, ceramics (BeO, Al2O3) and novel biodegradables (polylactic-acid [PLA] and cellulose acetate [CA]). The board thicknesses were given in 0.25 mm steps. Results are calculated for heat transfer coefficients of convection and vapour phase (condensation) soldering. Even heat transfer is assumed on both PCB sides.

Findings
It was found that temperature distributions along PCB thicknesses are mostly negligible from solder joint formation aspects, and most of the materials can be used in explicit reflow profile modelling. However PLA shows significant temperature differences, pointing to possible modelling imprecisions. It was also shown, that while the difference between midplane and surface temperatures mainly depend on thermal diffusivity, the time to reach solder alloy melting point on the surface depends on volumetric heat capacity.

Originality/value
Results validate the applicability of explicit heat transfer modelling of PCBs during reflow for different heat transfer methods. The results can be incorporated into more complex simulations and profile predicting algorithms for industrial ovens controlled in the wake of Industry 4.0 directives for better temperature control and ultimately higher soldering quality.
Quantitatively evaluating the effects of flash fire exposure on the mechanical performance of thermal protective clothing
Authors: Deng Meng , Tian Miao , Wang Yunyi , Wang Min 
Published: January 2020

Purpose
The purpose of this paper is to determine the effect of flash fire exposure on the mechanical properties of single-layer thermal protective clothing.

Design/methodology/approach
The full-scale flame manikin tests were performed to simulate flash fire exposure. Two typical fire-resistant fabrics were investigated. The manikin was divided into seven body parts and the specimens meeting the requirements of tensile and tear strength standards were sampled. Fabric thickness, mass per unit area, tensile strength and tear strength were measured and analyzed.

Findings
The results revealed the significant influence of heat flux on both of tensile and tear strength. However, the regression analysis indicated the low R2 of the liner models. When the tensile and tear strength retention were reorganized based on the body parts, both of the multiple linear regression models for tensile and tear strength showed higher R2 than the one-variable linear regressions. Furthermore, the R2 of the multiple linear regression model for tear strength retention was remarkably higher than that of the tensile strength.

Practical implications
The findings suggested that greater attention should be paid to the local part of human body and more factors such as the air gap should be considered in the future thermal aging of firefighters’ clothing studies.

Originality/value
The outcomes provided useful information to evaluate the mechanical properties of thermal protective clothing and predict its service life.
Collectively innovating; modelling responsible exposure in heterarchical organisations
Authors: Schoellhammer Sarah , Gibb Stephen 
Published: January 2020

Purpose
This paper aims to develop a model of collective innovation, with respect to innovation strategy, structure and culture in heterarchies. The enabling of collective innovation in heterarchies is conceptualised as “responsible exposure”.

Design/methodology/approach
A study adopting cross-case analysis was undertaken with five organisations perceived to have heterarchical characteristics. These included one small company, two medium-sized companies and two larger companies, all were European. Data from semi-structured interviews, a survey of staff and other sources provide evidence of collective innovation practices.

Findings
The cross-case analysis suggests that the management of collective innovation is different from “classic” innovation management. It is more about enabling “responsible exposure” than the management of “shelter” for collective innovation.

Research limitations/implications
The strength of cross-case analysis and conceptual framework validation is limited by the cases being all from the European region.

Practical implications
What strategy, structure and culture for “responsible exposure” may mean can be described. Heterarchies will always be relatively rare, though lessons from how they enable collective innovation can be more widely learned. Lessons for the wider population of organisation that combine hierarchical and heterarchical characteristics and seek greater innovation are identified.

Social implications
Collective innovation, which requires “responsible exposure” has implications for the capabilities of managers and professionals concerned with innovation.

Originality/value
The cross-case analysis of innovation in heterarchies is original, leading to the description of a model of “responsible exposure” for collective innovation.
Employee well-being of Finnish criminal investigators – mixed methods approach
Authors: Saari Tiina , Ellonen Noora , Vuorensyrjä Matti 
Published: January 2020

Purpose
The purpose of this paper is to compare the employee well-being of police officers in different investigative groups. This paper analyses crime investigators’ employee well-being from four perspectives: organisational commitment, job satisfaction, exhaustion and turnover intentions.

Design/methodology/approach
The analysis is based on Finnish Police Personal Survey data (n=6,698), and qualitative and quantitative analysis methods are utilised.

Findings
Significant differences between investigative groups were found, and the police officers working in short-term investigations had the lowest level of well-being. The qualitative results revealed the employee- and organisational-level reasons behind these attitudes. One major issue is the lack of meaningfulness in work as the respondents describe their jobs as boring and monotonous and report that they do not have the appropriate resources to do their work as well as they wish.

Practical implications
To enhance the well-being of the investigators, police forces should improve the ways of leadership and invest more resources especially on short-term investigation to diminish the insecurity and ensure the quality and continuity of the work.

Originality/value
Research on the well-being of police officers has mostly focused on officers conducting surveillance or emergency operations, and there is very little knowledge of the well-being of crime investigators. This research adds to the limited knowledge on employee well-being of crime investigators.
Improving assessment capability for accounts receivable pool financiers
Authors: Song Xiao , Ying Hao , Zhao Xiande , Chen Lujie 
Published: January 2020

PurposeThe accounts receivable pool (ARP) is an e-invoice management system that provides suppliers with easy access to financial service. The purpose of this paper is to focus on the strength and weakness of ARP mechanism and suggest efficient methods to identify creditworthy borrowers.Design/methodology/approachBy decomposing the sales records of 348 ARP borrowers and predicting the occurrence of overdue incidences, this study first portrays the creditworthy borrowers by sales features. Then, content analysis was applied to measure the loadings of soft and hard information, and examined the effectiveness of different information structures in creditworthiness assessment.FindingsFor ARP borrowers, upward trend and low volatility reveal their creditworthiness. In order to identify creditworthy borrowers beforehand, ARP financiers who have elaborated more soft information and less hard information can perform better.Originality/valueThis study first discussed ARP finance from a critical perspective and underlines borrower assessment to eliminate the defect of loose recourse. The empirical evidence presents the sales features of creditworthy borrowers. Moreover, the results suggest an efficient approach for ARP financiers to conduct better assessment.
A novel facility location problem for taxi hailing platforms
Authors: Ma Hong , Shen Ni , Zhu Jing , Deng Mingrong 
Published: January 2020

Purpose
Motivated by a problem in the context of DiDi Travel, the biggest taxi hailing platform in China, the purpose of this paper is to propose a novel facility location problem, specifically, the single source capacitated facility location problem with regional demand and time constraints, to help improve overall transportation efficiency and cost.

Design/methodology/approach
This study develops a mathematical programming model, considering regional demand and time constraints. A novel two-stage neighborhood search heuristic algorithm is proposed and applied to solve instances based on data sets published by DiDi Travel.

Findings
The results of this study show that the model is adequate since new characteristics of demand can be deduced from large vehicle trajectory data sets. The proposed algorithm is effective and efficient on small and medium as well as large instances. The research also solves and presents a real instance in the urban area of Chengdu, China, with up to 30 facilities and demand deduced from 16m taxi trajectory data records covering around 16,000 drivers.

Research limitations/implications
This study examines an offline and single-period case of the problem. It does not consider multi-period or online cases with uncertainties, where decision makers need to dynamically remove out-of-service stations and add other stations to the selected group.

Originality/value
Prior studies have been quite limited. They have not yet considered demand in the form of vehicle trajectory data in facility location problems. This study takes into account new characteristics of demand, regional and time constrained, and proposes a new variant and its solution approach.
Continuance interaction intention in retailing
Authors: Foroudi Pantea , Cuomo Maria Teresa , Foroudi Mohammad M. 
Published: January 2020

PurposeSocial media as a competitive marketing tool deliver online platforms for retailers to get closer to their consumers/visitors/shoppers through continued interaction. The purpose of this paper is to scrutinize how customer values (functional, social and experimental) enhance satisfaction, loyalty and identification, and how such relationships, in turn, impact users’ continuance interaction intention.Design/methodology/approachA mixed-method approach was designed to identify the consumers’ perception toward high-end retailers of worldwide brands. In all, 12 interviews with experts in retailing and a survey among 390 respondents were conducted. Structural equation modeling/AMOS was employed to gain insight into the various relationships and influences.FindingsTo augment users’ continuance interaction intention, the results indicate that retail managers should focus more on customer-based values when they design marketing strategies for brand pages on social media. The findings also provide guidelines for retail marketing and social media managers to generate consumer value in the retail environment via information quality, product-related learning and economic benefits (functional value); interaction, collaboration and social presence (social value); and experiential value (intellectual and effective value).Originality/valueThe paper offers critical managerial contributions by presenting a comprehensive picture of the condition in which a favorable brand social media page could be constructed within a brand to satisfy consumer value and achieve satisfaction, loyalty, identification and continuance interaction intention, all of which are critical objectives for every company. In other words, a clear knowledge of the dimensions of consumer value concepts can assist retail communication managers to improve consumers’/visitors’/shoppers’ intention to continue their interaction in a competitive market. The current study is one of the very few emerging research studies to have examined the relationships between consumers’/visitors’/shoppers’ functional values, social values and experimental values empirically, and to have further explored the relationships between the research constructs.
Social media brand engagement: dimensions, drivers and consequences
Authors: Chahal Hardeep , Wirtz Jochen , Verma Anu 
Published: January 2020

Purpose
This paper aims to advance the current understanding of social media (SM) brand engagement. Specifically, it validates the dimensionality of SM brand engagement, examines its drivers and explores the impact of SM brand engagement on brand equity.

Design/methodology/approach
A survey was conducted with 433 Generation Y (Gen Y) SM users.

Findings
The study results validate SM brand engagement as a multidimensional construct comprising utilitarian, hedonic and social dimensions. Three categories of SM engagement antecedents were identified: social factors (social identity and tie-strength), user-based factors (service, product and price information, hedonic motives and prior experience with SM) and firm-generated information (personalized advertising, mass advertising, promotional offers and price information). Finally, SM brand engagement was positively related to brand equity.

Research limitations/implications
This study focused on Gen Y SM users in India. This study should be replicated in other contexts to establish the generalizability of the findings.

Practical implications
A better understanding of the dimensionality and drivers of SM brand engagement can help managers to enhance their SM strategies to build brand equity.

Originality/value
This is the first study to provide a comprehensive examination of the dimensions, drivers and consequences of SM brand engagement.
Research in defense logistics: where are we and where are we going?
Authors: Zsidisin George A. , Bresler Amanda , Hazen Ben , Snider Keith F. , Wilkerson Taylor H. 
Published: January 2020

Purpose
The purpose of this paper is to provide insight on high-interest areas of research in defense-related logistics and supply chain management and opportunities for advancing theory and practice in this domain.

Design/methodology/approach
A panel of experts provided their insight to several questions oriented toward examining research opportunities and gaps in defense logistics research at the 2018 Academic Research Symposium of the Council of Supply Chain Management Professionals annual conference on September 30, 2018.

Findings
Three overarching themes emerged from the panel discussion for advancing theory and practice in defense logistics and supply chain management, which are developing a central repository, creating publication opportunities and integrating research practice and knowledge with the greater academic community.

Originality/value
Logistics and supply chain research is critical for advancing knowledge and practice in the military, as well as industrial settings. The intention in this manuscript is to provide scholars and practitioners in both settings greater awareness and potential avenues for developing synergies and processes for advancing logistics and supply chain research.
Microfinance, entrepreneurship and institutional quality
Authors: Nair Malavika , Njolomole Martha 
Published: January 2020

Purpose
The purpose of this paper is to consider the success and failure of microfinance institutions in generating economic growth over the past 30 years and propose a dual criterion of evaluation.

Design/methodology/approach
It surveys the empirical literature on microfinance and finds that while there has been small and localized success in various countries in improving access to credit, at the same time there has been a broader failure to generate economic growth. The authors argue that this broader failure should be viewed from the viewpoint of institutional failure or the lack of supporting institutions such as private property rights and stable rule of law within developing countries.

Findings
Using Baumol’s (1968) theory of entrepreneurship, the authors argue that the broader failure of microfinance is a case of poor institutional quality leading to unproductive or even destructive entrepreneurship rather than productive entrepreneurship. The paper also suggests a link between the literature criticizing foreign aid and this view on microfinance.

Originality/value
The paper provides a survey of the empirical literature on micro finance as well as a novel framework that aids in understanding both the localized small-scale success as well as broader failure to generate economic growth.
Revisiting the relationship between unexpected inflation and output in the presence of indexation
Authors: Buryi Pavlo , Donou-Adonsou Ficawoyi 
Published: January 2020

Purpose
This paper aims to investigate the relationship between output and unanticipated inflation when wages are indexed for the loss of purchasing power. The authors argue that the monetary authority remains useful when firms that face rigid demand index wages to compensate for the loss of purchasing power, unlike Fischer (1977), who suggested that monetary policy loses effectiveness when firms index wages.

Design/methodology/approach
This paper develops a simple theoretical model followed by an empirical investigation of the relationship between output and unanticipated inflation in the presence of indexation. The theoretical model assumes a perfectly competitive firm that produces a final good that has no close substitutes using one factor, labor. The demand for the product is rigid. The empirical work considers quarterly US data from 1982Q1 to 2017Q1 and uses the Generalized Method of Moments in which endogenous variables are instrumented using their own lags. This paper further considers the period before and after the recent global financial crisis.

Findings
This paper shows that unexpected inflation decreases the growth rate of output in the USA. The decrease is quantitatively and qualitatively stronger before the financial crisis than after the crisis. This finding suggests that the Federal Reserve should maintain higher expectations of inflation and then surprise the public with lower inflation rates. The results further suggest that regardless of how expectations are formed, firms and workers agree on the nominal wage that is equal to the realized marginal revenue product of labor.

Originality/value
This paper sheds light on the behavior of the central bank and its relative ineffectiveness in light of the recent economic recession.
Absence of the weekend effect and industry-style portfolios
Authors: Izadi Selma , Noman Abdullah 
Published: January 2020

Purpose
The existence of the weekend effect has been reported from the 1950s to 1970s in the US stock markets. Recently, Robins and Smith (2016, Critical Finance Review, 5: 417-424) have argued that the weekend effect has disappeared after 1975. Using data on the market portfolio, they document existence of structural break before 1975 and absence of any weekend effects after that date. The purpose of this study is to contribute some new empirical evidences on the weekend effect for the industry-style portfolios in the US stock market using data over 90 years.

Design/methodology/approach
The authors re-examine persistence or reversal of the weekend effect in the industry portfolios consisting of The New York Stock Exchange (NYSE), The American Stock Exchange (AMEX) and The National Association of Securities Dealers Automated Quotations exchange (NASDAQ) stocks using daily returns from 1926 to 2017. Our results confirm varying dates for structural breaks across industrial portfolios.

Findings
As for the existence of weekend effects, the authors get mixed results for different portfolios. However, the overall findings provide broad support for the absence of weekend effects in most of the industrial portfolios as reported in Robins and Smith (2016). In addition, structural breaks for other weekdays and days of the week effects for other days have also been documented in the paper.

Originality/value
As far as the authors are aware, this paper is the first research that analyzes weekend effect for the industry-style portfolios in the US stock market using data over 90 years.
Sigma ratings: adapting the credit rating agency model for the anti-money laundering world
Authors: Cash Daniel 
Published: January 2020

Purpose
Sigma Ratings is a new entrant to the anti-money laundering (AML) marketplace and seeks to alleviate some of the inherent flaws within the AML regime. This paper aims to examine those flaws and ask whether Sigma may succeed in this bourgeoning marketplace.

Design/methodology/approach
This paper is based upon a normative methodology, which takes place after reviewing the relevant literature to examine the potential success for Sigma Ratings.

Findings
The paper finds that there is indeed a position for Sigma Ratings in the marketplace, and that it may alleviate key issues within the AML regime.

Originality/value
The paper presents Sigma Ratings to the literature for the first time and positions this against an examination of the role of banks within AML – Sigma’s main demographic.
Inclusion and exclusion of sexual minorities at organisations
Authors: Aydin Erhan , Ozeren Emir 
Published: January 2020

PurposeThe purpose of this paper is to explore the inclusion and exclusion of LGBT individuals at organisations towards providing evidence from LGBT non-governmental organisations (NGOs) in Turkey and the UK.Design/methodology/approachIn order to achieve this aim, 40 semi-structured qualitative in-depth interviews (20 in each country) were conducted. The empirical dimension of this study was invigorated by thematic analysis of interviews that composed of the individuals and members who work in LGBT organisations in Turkey and the UK.FindingsThe significance and the role of context in shaping public discourse, policies and practices of LGBT organisations in Turkey and the UK were explored in greater details. Based on the coding and thematic analysis of the interviews, three main findings were presented, which are “inclusion and exclusion at work”, “inclusion and exclusion in politics” and “inclusion in LGBT organisations”.Originality/valueThe originality of this research comes from its unique nature with a comparative approach on the contrary of current LGBT research that mostly focusses on an individual level of analysis and workplace discrimination. Research evidence demonstrates that there are a number of complexities, contradictions and tensions based on the specific characteristics of each country setting where various cultural, societal, political and legislative/regulative forces come into play in LGBT inclusion at organisations. Consequently, this research provides valuable insights for the inclusion of sexual minorities drawing on the evidence from LGBT NGOs in Turkey and the UK.