bluuebunny/crossref_metadata_2025_split huggingface dataset:
Using sharp wedge-shaped porous media in front and wake regions of external nanofluid flow over a bundle of cylinders
Authors: Siavashi Majid , Iranmehr Shirzad 
Published: May 2019

Purpose
The purpose of this study is to analyze a new idea for external flow over a cylinder to increase the heat transfer and reduce pressure drop. Using wedge-shaped porous media in the front and wake regions of the cylinder can improve its hydrodynamic, and the rotating flow in the wake region can enhance the heat transfer with increased porous–liquid contact. Permeability plays a vital role, as a high-permeable medium improves heat transfer, whereas a low-permeable region improves the hydrodynamic.

Design/methodology/approach
Therefore, in the current research, external forced convection of nanofluid laminar flow over a bundle of cylinders is simulated using a two-phase mixture model. Four cases with different porous blocks around the cylinder are assessed: rectangular porous; wedge shape in trailing edge (TEP); wedge shape in leading and trailing edges (LTEP); and no porous block case. Also, three different lengths of wedge-shaped regions are considered for TEP and LTEP cases.

Findings
Results are presented in terms of Nusselt (Nu), Euler (Eu) and the performance evaluation criterion (PEC) numbers for various Reynolds (Re) and Darcy (Da) numbers.

Originality/value
It was found that in most situations, LTEP case provides the highest Nu and PEC values. Also, optimal Re and porous medium length exist to maximize PEC, depending on the values of Da and nanofluid volume fraction.
A comparative analysis of financial affordability in Islamic home financing instrumentsin Malaysia
Authors: Md Zabri Mohd Zaidi , Haron Razali 
Published: May 2019

Purpose
This study aims to compare and contrast the financial affordability of Islamic home financing instruments such as bay’ bithaman ajil and musharakah mutanaqisah (MM) offered by various home financing institutions in Malaysia.

Design/methodology/approach
Mathematical simulations were carried out in examining the financial affordability (or lack thereof) of various Islamic home financing by both Islamic commercial banks (ICB) and financial cooperatives (FC).

Findings
This study has shown that MM by FC is a workable, more financially affordable option to potential homeowners. Unlike ICB, MM by FC uses rental rates as a benchmarking tool because of its inherent nature of flexibility.

Research limitations/implications
MM by FC has the potential to reduce the cost of home acquisition (purchase affordability) and the amount of monthly installments (repayment affordability) of homeowners in Malaysia.

Originality/value
This study shows the financial implication of unaffordable Islamic home financing instruments may have on the Malaysian households, which were derived from using official data from various government agencies.
Stock price movements and trading behaviors around merger and acquisition announcements
Authors: Yang Jin Young , Segara Reuben , Feng Jingwei 
Published: May 2019

Purpose
The purpose of this paper is to examine the relationship between price movements of target firms’ stocks and behaviors of local individual, local institutional and foreign investors in trading target firms’ stocks around mergers and acquisitions announcements in Korea.

Design/methodology/approach
This study uses event study methodology and cross-sectional regressions for abnormal returns.

Findings
Results reveal that the average abnormal return becomes significantly positive three days prior to the announcement date and becomes insignificant after the announcement date. Results also show that local individual investors tend to sell more intensely prior to announcements for target firms with larger wealth effects. In contrast, foreign investors tend to buy target stocks with larger wealth effects more intensely prior to the announcement date, and then they sell them more intensely in the post-announcement period.

Originality/value
This paper provides evidence that foreign investors are able to identify target stocks with large wealth effects prior to the announcement date and they realize short-term profits by selling them following the announcement.
Individualism, synchronized stock price movements, and stock market volatility
Authors: Zhan Feng 
Published: May 2019

PurposeThe purpose of this paper is to examine the impact of national culture on herding behavior across international financial markets.Design/methodology/approachThe relation between national culture and investor behavior, and how it impacts overall market volatility is studied by examining synchronized stock price movements and stock market volatility in 47 countries around the world over the period of January 2003–May 2012.FindingsThe author finds that nations with lower values of individualistic culture are more likely to have a higher number of synchronized stock price movements. Further, the correlation between stock price movements apparently increases stock market volatility. Nations with high individualistic culture have a lower number of synchronized stock price movements and, thus, have lower levels of stock market volatility. The positive relationship between synchronized stock price movements and stock market volatility is stronger for emerging markets during the financial crisis from June 2007 to December 2008.Originality/valueThe empirical results in this paper indicate that a portion of the difference in market level volatility is attributed to the investor bias of different cultures. Investor behavior bias creates excess volatility that drives stock prices away from fundamentals. This impact is strong in nations with lower individualistic culture. The result from this research could also have a wide implication in the investment industry.
Thermal-hydraulic model for axial piston pump with leakage and friction and its application
Authors: Shi Guanglin , Wang Haiji 
Published: May 2019

Purpose
This paper aims to carry out a thermal-hydraulic simulation model for pump and hydraulic system to predict the temperature increasing and pump performance. Based on the model, how to alleviate the temperature is introduced. Besides, the optimization of piston is carried out.

Design/methodology/approach
This paper analyzes the heat generation in lubricating interfaces of the pump with energy conversion theory. The heat transfer inside the pump is analyzed with the control volume method. The simulation model is constructed in AMESim because of its operating friendly nature. The experiment is carried out to prove the validity and accuracy of the simulation model.

Findings
Temperature has less effect on the mechanical loss of pump. However, it has a great impact on volumetric efficiency. To reduce the temperature on the piston surface, the size of the piston should be optimized.

Originality/value
This paper fulfills a novel thermal-hydraulic model to evaluate the temperature of the pump. Based on the model, the performance of the pump is determined and optimization is carried out.
Emerging practices for managing user misconduct in online news media comments sections
Authors: Juneström Amalia 
Published: May 2019

Purpose
The purpose of this paper is to bridge a gap in knowledge on the professional information practices of a group of people whose daily work of managing user-generated content online exposes them to users whom they perceive as acting aggressively or otherwise offensively online.

Design/methodology/approach
Journalists’ narratives of practices for managing and responding to user comments perceived as offensive are analysed qualitatively. For this purpose, ten interviews with journalists from nine different news organisations in Sweden, Denmark, Germany and Canada were conducted.

Findings
The study finds that the environment in which the journalists work plays a vital role in the evolution of the practices. Practices, indissolubly tied to the contexts or sites in which people’s activities take place, are conditioned by moral values, traditions and collective experiences which journalists enact through the practice they engage in when they are dealing with user posts online. The site, conceived as an information landscape, is that of the newsroom. Practices for managing users online evolve through actors participating in a process of learning and their ability to adopt the cultural norms and values of their environment.

Originality/value
This study sheds light on the mechanisms behind the evolution of practices for handling user-generated content online and it reports on the importance of properties such as norms, values and emotions for how things are done in the information landscape of news journalism.
Levels, trends and socio-economic correlates of caesarean section deliveries
Authors: Golandaj Javeed A. , Hallad Jyoti S. 
Published: May 2019

Purpose
Caesarean section (CS) is being used as a life-saving surgical tool when complications arise in the process of childbirth. CS rates have dramatically increased across the world, especially in recent decades. In this background, the purpose of this paper is to explore the CS rates and its determinants in Karnataka, India.

Design/methodology/approach
The study uses multiple rounds of the District Level Household Survey (DLHS) data to show the trends, differentials and determinants in CS deliveries. Both bivariate and multivariate analyses have been carried out, and the χ2 test and logistic regression models were applied.

Findings
Result shows a sharp increase in CS rates across Karnataka; further, this is high and reaches an alarming level in southern parts of the state. Along with a huge rural–urban difference, significant biological and socio-economic differences were observed. Further, a very dramatic increase in the CS rate was observed in private health facilities, whereas it was stagnant or even decreased in public health facilities during recent years. Mothers age at birth, birth weight, birth order, multiple births, birth institution and place of residence were significantly associated with CS delivery. Unlike these biological factors, the social-economic factors like maternal education, caste, religion and below poverty line household were not found to be significant in determining CS deliveries.

Originality/value
A strong policy to address the dramatic increase in CS deliveries is the need of the hour. Further, there should be a proper mechanism at national, state and sub-state level to provide appropriate checks and monitoring for CS deliveries which are unnecessary.
The determinants of profitability inSharia-compliant corporations: evidence from Jordan
Authors: Alsharari Nizar Mohammad , Alhmoud Turki Raji 
Published: May 2019

PurposeThe purpose of this paper is to examine the determinants of profitability of 28Sharia-compliant corporations in Jordan over the three-year period of 2013-2015.Design/methodology/approachThe two-stage least square (2SLS) regression analysis with fixed effects was conducted using two measures of profitability, namely: return on assets and return on equity. The empirical data were collected from 28Sharia-compliant corporations in Jordan over the study period. A variety of internal and external factors was used to determine profitability.FindingsIn general, this analysis of the determinants of profitability forSharia-compliant corporations confirmed previous findings. Regression findings revealed that previous year profitability, debt ratio, organizational structure, the size of the audit firm and voluntary disclosure to be important determinants of profitability ofSharia-compliant corporations in Jordan from 2013 to 2015. The independent variables of firm size, ownership ratio greater than 5%, liquidity ratio, percentage of non-Jordanian ownership or the age of the firm were not found to significantly influence the profitability of the corporations studied.Research limitations/implicationsThe authors determined that the independent variables selected, with few exceptions, behaved according to expectations. Moreover, the current literature on the influence of management on performance, and thus, profitability, does not consider the philosophy under which business is conducted (a limitation with respect to the type of business conducted). For example,Sharia-compliant and non-Sharia-compliant firms operate under different sets of principles and rules. This variance in business philosophies may have an important bearing on management style, an aspect that has been neglected in the organizational management literature. The panel data from a three-year period was insufficient to validate the consistency of the results; future researchers may increase the length of the study periods to confirm results and increase the robustness of the data collection method.Practical implicationsThe findings from the study have implications that may be functional for businesses, investors and policymakers in their focus on theSharia-compliant business sector in Jordan. The factors influencing profitability may inform the setting of regulatory policy designed to stabilize and sustain the performance ofSharia-compliant corporations more broadly.Originality/valueThis study contributes to the growing body of literature on Islamic finance, and can be considered one of a very few that have examined the internal and external determinants of the profitability ofSharia-compliant corporations in a developing country such as Jordan, using panel data.
A mathematical model to adopt B2C ecommerce based on special customer requirement in social values with an emphasis on Islamic beliefs
Authors: Ramyani Saleh Saeidi , Mousavi Khaneghah Ehsan , Shadnosh Nosratollah , Reyhani ShowkatAbad Amirhosein 
Published: May 2019

PurposeThis paper aims to propose a mathematical model for describing and clarifying the relationships among the indicators governing the social values of special customers in business-to-consumer (B2C) e-commerce systems. This mathematical model is also able to describe the degree of adaptability of e-commerce systems to the social values of specific clients, and commercial firms are able to use the parameters described in this paper to increase the versatility and has the power to trade with special customers in different areas.Design/methodology/approachIn this paper, while analyzing the issue of trading from the point of view of the customer as an element of trading, the affecting factors the trading space have been extracted. These affecting factors are categorized in three major groups: culture, technology and customers. This classification is based on the e-commerce and developing the traditional commerce. Using the mapping functions, the effects of each element in these three spaces on the concept of social values have been analyzed. The result of this analysis is the mathematical model governing each parameter and its semantic relation with the concept of social value.FindingsThe presence of a mathematical model between the indicators influencing the model adaptability and social values space allows e-commerce system designers to be able to make decisions on the adaptability of the model with a quantitative approach. To examine the proposed mathematical models, important frameworks and patterns in the field of e-commerce have been analyzed with an Islamic approach, as one of the adaptations of B2C e-commerce model.Research limitations/implicationsRegarding the innovation of the work, the case has been made, and the concept of social value and the model governing the elements of social values in this paper, in a B2C e-commerce model, has been discussed in general; the problem is parametric solved.Practical implicationsOne of the key concepts in commerce is the ability of the commerce model to adapt to the requirements of special customers. This is more important in costumer-based e-commerce models. In these types of systems, if the commerce cannot match the customer’s characteristics, it will not be accepted and used by customers. This is especially more important in the field of social values for customers.Originality/valueIn this paper, a mathematical model is presented to examine the adaptability of e-commerce systems to the social values of special customers. In examining this model, the relationship between each element affecting the social value of specific customers and the factors affecting trade has been studied.
A novel view on knowledge sharing in the agri-food sector
Authors: Fait Monica , Scorrano Paola , Mastroleo Giovanni , Cillo Valentina , Scuotto Veronica 
Published: May 2019

PurposeNowadays, the agri-food sector is facing several challenges due to a rapid technological change which calls for knowledge sharing (KS) practices to enhance businesses’ performance. This has spurred a collaborative approach and the creation of networks. Since there still is a paucity of research on the quality degree of KS, the purpose of this study is to offer an empirical research on the quality degree of KS by exploring outcome expectations and social exchange dimensions. Theoretically, it is examined by a double lens of social capital and social cognitive theory.Design/methodology/approachThis study offers an empirical analysis of 313 directors of 11 “consortia” in the agri-food sector in Italy by using the fuzzy expert system. The model allows to aggregate multi criteria dimensions of KS and rates its quality.FindingsAs resulted, the quality degree of KS is influenced by outcome expectations – personal and community expectations – and three forms of dimensions of social exchange: structural, relational and cognitive. The paper ends with a discussion of research findings, its limitations and implications.Originality/valueAs there is still a paucity of research on the determinants of quality degree of KS, the research adopts a double lens of social capital and social cognitive theories to explore what are these determinants.
Do product category and consumers’ motivations profiles matter regarding counterfeiting?
Authors: Le Roux André , Thébault Marinette , Roy Yves 
Published: May 2019

PurposeThe purpose of this study is to explore the impact of product category and consumers’ motivations profiles on the determinants of consumers’ preferences and purchase intentions of counterfeits and genuine products, through manipulation of product attributes and purchase situations.Design/methodology/approachThe study relies on an experimental design involving a questionnaire on a convenience sample with two parts: a tradeoff model manipulating three attributes, product type (genuine vs. counterfeit), price (high vs. low) and place of purchase (regular shop, Internet and market) in two product categories, and a scale measuring motivations to purchase counterfeits. Ranking and purchase intentions are analyzed using conjoint analysis and generalized linear mixed model (GLMM).FindingsRanking reveals a dominant pattern of consumer behavior regarding counterfeiting: product type, price and place of purchase. Product category has a moderating effect on choice criteria: relative importance of place of purchase and price varies according product category. Consumers’ motivations profiles have also a moderating effect on consumer behavior. Some profiles are more receptive to copies. Consumers’ profiles exhibit different hierarchies of purchase criteria and may change them depending upon product category.Originality/valueResults challenge literature on the dominant role of price among choice criteria. Price alone cannot determine a counterfeit purchase. It is the interaction of price, place of purchase or product type that explains such a behavior. Product category matters: Price and place of purchase importance cannot be considered without accounting for product category. Consumers’ motivations profile matters. Consumers are not homogeneous face to counterfeits.
Protecting brands from product failure using extended warranties
Authors: Karande Kiran , Gopinath Mahesh 
Published: May 2019

Purpose
Product failures can lead to customer dissatisfaction, negative brand attitudes and a loss of brand equity. The purpose of this paper is to investigate whether extended warranties offer a mechanism to mitigate the negative effects of product failure and the mediating role of positive and negative self-directed emotions.

Design/methodology/approach
The hypotheses are tested using two 2 × 2 between-subjects experiments with product failure and warranty purchase as the two factors, attitude toward the brand as the dependent variable, positive and negative self-directed emotions as mediating variables and attitude toward warranties as a covariate.

Findings
It is found that the decline in attitude toward the brand due to product failure is greater among customers purchasing an extended warranty, than among those who do not. Moreover, positive and negative self-directed emotions mediate this relationship.

Originality/value
Manufacturers are for the most part not involved in distribution or administration of extended warranties, which are mainly sold through retailers and administered by companies that specialize in extended warranties. The study findings indicate that contrary to industry practice, consumer-durable manufacturers should consider more active management and promotion of extended warranties to protect their brand’s equity from the negative effects of product failure.
Blockchain and contract theory: modeling smart contracts using insurance markets
Authors: Sheth Alpen , Subramanian Hemang 
Published: May 2019

Purpose
The purpose of this paper is to model blockchain-based smart contracts specifically for the insurance industry. The authors introduce the concept of smart contracts and further discuss the implementation of a decentralized insurance marketplace, namely Etherisc, using smart contracts on the Ethereum blockchain platform.

Design/methodology/approach
The authors employ three methods in this paper. The first one is a design illustration of a live application, namely, Etherisc. The second one is an economic model using demand–supply and equilibrium economics. The third one is an illustration using principal–agent modeling using constrained optimization.

Findings
The findings illustrate the following: in the design discussion, the authors demonstrate the architecture of a live Ethereum-based smart contract system. In the economic model, the authors illustrate how decentralized smart contract systems can increase social welfare by shifting demand and supply by reducing transactional costs. In the principal–agent model, the authors show how both the principal and agent are positively benefited by various mechanisms.

Originality/value
The paper is an original contribution and can be used as a reference model to study insurance or other similar marketplaces and the underlying economic transformations happening therein.