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Article
Publication date: 3 July 2017

Rui Huang, Kangni Shen, Teng Xu and Yongjia Shen

The purpose of this paper is to explore the optic performance of extended stilbene derivative.

Abstract

Purpose

The purpose of this paper is to explore the optic performance of extended stilbene derivative.

Design/methodology/approach

Five steps were adopted to synthesise novel 4, 4′-bis (2-cyanostyryl) stilbene, which contained three vinyl units in the skeleton (S3E). The structure of S3E was characterised by 1H NMR and EI-MS. Its absorption and emission spectra were also given.

Findings

Compared to C.I. Fluorescent Brightener 199, which contains two vinyl units in the skeleton, S3E showed obvious bathochromic shifts in both UV-VIS and FL spectra. The maximum absorption wavelength and fluorescent wavelength were at 390 nm and 464 nm, respectively, with Stoke’s shift of 74 nm. The absolute fluorescence quantum yield was 0.42. Thermogravimetric analysis (TGA) revealed that the weight loss of S3E was less than 5 per cent at 300 °C. Moreover, the light resistance test showed that S3E in PVC plate can keep the good fluorescent intensity for more than seven days exposed to xenon light. Therefore, it is believed that S3E could satisfy the requirements of colouring PVC as a fluorescent dye.

Practical implications

S3E can be used as a candidate of fluorescent dye in the development of thermoplastics.

Originality/value

The present paper designed and synthesised a new derivative of stilbene, which showed its preference to be a colourant of thermoplastics.

Details

Pigment & Resin Technology, vol. 46 no. 4
Type: Research Article
ISSN: 0369-9420

Keywords

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Article
Publication date: 10 December 2019

Tie-Lin Chen, Wenbin Tao, Wenjun Zhu and Mozhen Zhou

Near-surface mounted (NSM) fiber-reinforced polymer (FRP) rod is extensively applied in reinforced concrete (RC) structures. The mechanical performances of NSM…

Abstract

Purpose

Near-surface mounted (NSM) fiber-reinforced polymer (FRP) rod is extensively applied in reinforced concrete (RC) structures. The mechanical performances of NSM FRP-strengthened RC structures depend on the bond behavior between NSM reinforcement and concrete. This behavior is typically studied by performing pull-out tests; however, the failure behavior, which is crucial to the local debonding process, is not yet sufficiently understood.

Design/methodology/approach

In this study, a three-dimensional meso-scale finite element method considering the cohesion and adhesion failures is presented to model the debonding failure process in pull-out tests of NSM FRP rod in concrete. The smeared crack model is used to capture the cohesion failures in the adhesive or concrete. The interfacial constitutive model is applied to simulate the adhesion failures on the FRP-adhesive and concrete-adhesive contact interfaces.

Findings

The present method is first validated by two simple examples and then applied to a practical NSM FRP system. This work studied in detail the debonding process, the bond failure types, the location of peak bond stress, the transmitting deformation in adhesive and the morphology of contact zone. The developed method provides a practical and convenient tool applicable for further investigations on the debonding mechanism for the NSM FRP rod in concrete.

Originality/value

A three-dimensional meso-scale finite element method considering the cohesion and adhesion failures is presented to model the debonding failure in NSM FRP-strengthened RC structures. The smeared crack model and the interfacial constitutive model are introduced to develop a convenient approach to analyze the failures in adhesive, concrete and related interfaces. The developed numerical method is applicable for studying the debonding process, the bond failure types, the location of peak bond stress, the transmitting deformation in adhesive and the morphology of contact zone in detail.

Details

Engineering Computations, vol. 37 no. 3
Type: Research Article
ISSN: 0264-4401

Keywords

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Article
Publication date: 25 September 2019

Jing Li

The purpose of this paper is to examine the factors that lead to the controversy within the existing empirical literature on the relationship between land tenure and…

Abstract

Purpose

The purpose of this paper is to examine the factors that lead to the controversy within the existing empirical literature on the relationship between land tenure and agricultural investments in China.

Design/methodology/approach

This study conducts a meta-regression analysis (MRA) based on 265 samples from 29 selected studies. These studies are collected from different regions and populations; therefore, this study utilizes a random-effects meta-regression model to control between-study heterogeneity.

Findings

The empirical results show that the variable “land-related long-term investments” significantly affects the relationship between land tenure and agricultural investments. The variables: “ration land,” “land titling” and “land transfer rights” all have significant effects on this relationship, but at different levels. The study area (e.g. “western China,” “central/inland China,” “two regions contained”), “plot level,” “panel data,” “sample size,” “considered endogeneity” and “off-farm employment” variables all significantly influence the relationship. Additionally, the results show that the relationship is significantly affected by the survey time.

Practical implications

Policymakers should treat the existing research conclusions with caution and pay more attention to defining land tenure. The relationship between land tenure and agricultural investments also depends on regional resource availability. Therefore, land property rights policies should be region-specific in order to successfully encourage agricultural investments.

Originality/value

In this study, the author collectively examines existing empirical studies to investigate whether their inconsistent results are affected by research characteristics. To the author’s knowledge, this is the first study that analyzes land tenure and agricultural investments in China using MRA. Future research should refine the definition of land tenure, the selection of agricultural investment types, the research method and the method of data collection.

Details

China Agricultural Economic Review, vol. 12 no. 2
Type: Research Article
ISSN: 1756-137X

Keywords

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Article
Publication date: 6 August 2018

Manuel Trenz, Alexander Frey and Daniel Veit

The purpose of this paper is to develop a categorization of sharing practices from a structured interdisciplinary literature review on the Sharing Economy. Instead of…

Abstract

Purpose

The purpose of this paper is to develop a categorization of sharing practices from a structured interdisciplinary literature review on the Sharing Economy. Instead of striving for a new definition, the authors distinguish nine types of sharing practices and provide an overview of prior investigations on sharing practices across three levels of analysis and 15 research areas. The structured analysis is translated into opportunities for future research on the Sharing Economy.

Design/methodology/approach

The study follows a structured literature review approach to uncover practices related to the Sharing Economy and similar phenomena. The authors analyze 210 articles from a broad number of disciplines, and develop a categorizing framework for Sharing Economy practices.

Findings

The paper identifies nine different types of sharing practices and provides a structured way for analyzing, comparing and positioning research on the Sharing Economy and related phenomena.

Research limitations/implications

The categorization of sharing practices and the embedded interdisciplinary overview of studies on the Sharing Economy help to explain potentially contradictory research results and uncovers opportunities for future research in the topic area.

Originality/value

Given the variety of disciplines dealing with the Sharing Economy and the plenitude of definitions and related concepts, the categorization and research overview provides a consolidated view of the knowledge in the topic area and an effective tool for identifying paths for future research.

Details

Internet Research, vol. 28 no. 4
Type: Research Article
ISSN: 1066-2243

Keywords

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Article
Publication date: 2 March 2015

Alessio Ciarlone

This paper aims to investigate the characteristics of house price dynamics for a sample of 16 emerging economies from Asia and Central and Eastern Europe over the period…

Abstract

Purpose

This paper aims to investigate the characteristics of house price dynamics for a sample of 16 emerging economies from Asia and Central and Eastern Europe over the period of 1995-2011.

Design/methodology/approach

Linking housing valuations to a set of conventional fundamental determinants – relative to both the supply and the demand side of the market, institutional factors and other asset prices – and modelling short-term price dynamics – which reflect gradual adjustment to underlying fundamentals –conclusions about the existence and the basic nature of house price overvaluation (undervaluation) are drawn.

Findings

Overall, it was found that actual house prices in the sample of emerging economies are not overly disconnected from fundamentals. Rather, they tend to reflect a somewhat slow adjustment to shocks to the latter. Moreover, the evidence that housing valuations may be driven by overly optimistic (or pessimistic) expectations is, in general, weak.

Research limitations/implications

Residential property prices used in the empirical analysis have many limitations: while some series are derived using a hedonic pricing method, others are based on floor area prices collected by national authorities; while some countries publish house prices in national currency per-square metre (or per apartment or per dwelling), others calculate an index number scaled to some base year; while some countries publish statistics for the whole national territory, others produce data only for the capital city or for the largest cities in the country; data from national sources refer to different types of residential property; finally, available time series are relatively short, which may adversely affect the robustness of estimation results.

Practical implications

The decomposition suggested in the paper has important implications: it would be paramount, in fact, for policymakers to implement market-specific diagnoses, and to find the right policy instruments that can ideally distinguish between the two underlying components driving house price short-run dynamics.

Originality/value

There is a very small body of empirical literature on housing market developments in emerging economies, especially if focussed on the comparisons between the actual dynamics of housing valuations and the equilibrium ones.

Details

Studies in Economics and Finance, vol. 32 no. 1
Type: Research Article
ISSN: 1086-7376

Keywords

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Article
Publication date: 4 September 2018

Zhipeng Duan, Peng Liang, Hao Ma, Niya Ma and Boshu He

The purpose of this paper is to numerically investigate the flow characteristics and extend the data of friction factor and Reynolds number product of hydrodynamically…

Abstract

Purpose

The purpose of this paper is to numerically investigate the flow characteristics and extend the data of friction factor and Reynolds number product of hydrodynamically developing laminar flow in three-dimensional rectangular microchannels with different aspect ratios.

Design/methodology/approach

Using a finite-volume approach, the friction factor characteristics of Newtonian fluid in three-dimensional rectangular ducts with aspect ratios from 0.1 to 1 are conducted numerically under no-slip boundary conditions. A simple model that approximately predicts the apparent friction factor and Reynolds number product fappRe is referenced as a semi-theoretical fundamental analysis for numerical simulations.

Findings

The accurate and reliable results of fappRe are obtained, which are compared with classic numerical data and experimental data, and the simple semi-theoretical model used and all comparisons show good agreement. Among them, the maximum relative error with the classic numerical data is less than 3.9 per cent. The data of fappRe are significantly extended to other different aspect ratios and the novel values of fappRe are presented in the tables. The characteristics of fappRe are analyzed as a function of a non-dimensional axial distance and the aspect ratios. A more effective and accurate fourth-order fitting equation for the Hagenbach's factor of rectangular channels is proposed.

Originality/value

From the reliable data, it is shown that the values of fappRe and the model can be references of pressure drop and friction factor for developing laminar flow in rectangular channels for researchers and engineering applications.

Details

Engineering Computations, vol. 35 no. 6
Type: Research Article
ISSN: 0264-4401

Keywords

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Article
Publication date: 4 November 2019

Ching-I Teng

Online games are popular electronic commerce platforms in which gamers use avatars to interact with others. Avatar identification (the extent to which gamers regard…

Abstract

Purpose

Online games are popular electronic commerce platforms in which gamers use avatars to interact with others. Avatar identification (the extent to which gamers regard avatars as an extension of themselves) is known to be related to online gamer loyalty. However, few studies have examined how avatars could be designed to enhance avatar identification and online gamer loyalty, indicating a gap. Therefore, the purpose of this paper is to contextualize self-affirmation theory into online gaming contexts, identified key theoretical elements and examined how they are related to avatar identification and online gamer loyalty.

Design/methodology/approach

This study surveyed 1,348 massively multi-player online role-playing game players, and their responses were analyzed using structural equation modeling.

Findings

The analytical results indicate that irreplaceability within a team and avatar customization are positively related to unique avatar image, while avatar customization is positively related to positive avatar image. Moreover, avatar physical attractiveness and avatar ability to achieve are positively related to positive avatar image. Both unique and positive images of an avatar (as perceived by the user) are positively related to avatar identification, and further to online gamer loyalty.

Originality/value

This study proposes new constructs: irreplaceability within a team, avatar ability to achieve, unique avatar image and positive avatar image. Such new constructs provide insights to aid electronic commerce managers in avatar design, thus instilling gamer identification with avatars, and thus loyalty.

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Article
Publication date: 12 February 2021

Dejian Yu and Libo Sheng

Supply chain finance (SCF), which is able to manage financial flows along the supply chains effectively, has received wide attention from all over the world. Faced with…

Abstract

Purpose

Supply chain finance (SCF), which is able to manage financial flows along the supply chains effectively, has received wide attention from all over the world. Faced with the increasing number of outputs, the purpose of this paper is to investigate the SCF development over the past decades effectively, including the hot topics, knowledge diffusion trajectories and structure.

Design/methodology/approach

This paper adopts the keyword co-occurrence cluster and main path analysis (MPA) including four types of main paths, studying the historical development of SCF based on 2,233 papers retrieved from Web of Science during 1970–2019.

Findings

The results show that: (1) the research focuses on several aspects, including trade credit, supply chain management, procurement, health financing and sustainability, etc. and (2) trade credit financing has been the mainstream and the research focus has shifted from one-level trade credit to two-level trade credit. Recently, there is a trend to use game-theoretic models to find the best solutions for members in the supply chain.

Originality/value

This paper addresses the need to investigate the knowledge evolution in the SCF domain. It provides a framework to study the knowledge diffusion trajectories and structure, which helps scholars to handle thousands of papers effectively and deepen their understanding of the history, present and future trends of SCF development.

Details

The International Journal of Logistics Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0957-4093

Keywords

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Article
Publication date: 4 March 2021

Gen-Yih Liao, Thi Tuan Linh Pham, Tzu-Ling Huang, T.C.E. Cheng and Ching-I Teng

Online games are prevalent internet applications and are known for satisfying the various needs of users. Nonetheless, little is known about whether online games could be…

Abstract

Purpose

Online games are prevalent internet applications and are known for satisfying the various needs of users. Nonetheless, little is known about whether online games could be a resort for users encountering workplace frustration. Explaining how workplace frustration and users' need satisfaction affect loyalty of online gamers, this study aims to formulate hypotheses and develop a framework based on the self-determination theory (SDT).

Design/methodology/approach

The authors use an online survey to collect 848 responses and use structural equation modelling to test the hypotheses.

Findings

The authors find that workplace frustration, autonomy need satisfaction and competence need satisfaction are positively related to online gamer loyalty. Moreover, workplace frustration enhances the link between competence need satisfaction and online gamer loyalty.

Originality/value

The authors are the first to use SDT to identify the three antecedents and the moderator of online gamer loyalty. Our findings offer a key message that game providers could design effective means to retain their gamers by understanding their gamers' workplace frustration and informing them that playing games could alleviate the associated negative feelings.

Details

Industrial Management & Data Systems, vol. 121 no. 5
Type: Research Article
ISSN: 0263-5577

Keywords

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Article
Publication date: 23 June 2020

Gen-Yih Liao, Tzu-Ling Huang, T.C.E. Cheng and Ching-I Teng

Relational cohesion theory posits that relational cohesion helps build relationships among communication partners, implying that users would expect a growth in relations…

Abstract

Purpose

Relational cohesion theory posits that relational cohesion helps build relationships among communication partners, implying that users would expect a growth in relations or making more friends in the future. However, little is known about expectancy of a better future state of relations, i.e. expectancy of relational growth, and its impact on users' continued engagement in online communication. Our study extends relational cohesion theory to explain how expectancy of relational growth impacts online gamer loyalty.

Design/methodology/approach

We test the framework using structural equation modeling to analyze a large sample of 1,429 responses from online gamers.

Findings

We find that expectancy of relational growth is positively related to norm compliance and relational cohesion, which are further related to network convergence and interdependence, fostering online gamer loyalty.

Originality/value

The findings contribute to relational cohesion theory by identifying novel sources of relational cohesion, i.e. expectancy of relational growth and norm compliance. Hence, game providers should create gamers' expectancy of growth in online relationships. Such expectancy could motivate continued gaming communication, even when gamers are not satisfied with the current state of online relationships. Moreover, we propose the new concept of expectancy of relational growth, which should have a strong impact on online communication in various areas.

Details

Internet Research, vol. 30 no. 5
Type: Research Article
ISSN: 1066-2243

Keywords

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