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1 – 10 of 11
Article
Publication date: 1 February 2010

Qiuling Cao, Sukang Zhu, Huijing Zhao and Hengxian Tu

There are many ways to identify fibres; however, since most of the tests are destructive or the sample preparation process is complex, most methods used to identify archaeological…

Abstract

There are many ways to identify fibres; however, since most of the tests are destructive or the sample preparation process is complex, most methods used to identify archaeological fibres have their limitations. Among the existing methods, Fourier Transform Attenuated Total Reflection Infrared (ATR-FTIR) technology is relatively simple, fast and non-destructive, and the results are more accurate and reliable. In this study, four samples of ancient Chinese fibre, yarn, and fabric were identified using ATR-FTIR technology. Spectra of fingerprints show that the characteristics of cotton, linen, and wool are clear. The spectra of archaeological cotton fibre and modern cotton fibre are compared and analyzed. The results show that as a non-destructive method for analyzing surface composition of materials, ATR-FTIR technology is suitable for the identification of archaeological fibres.

Details

Research Journal of Textile and Apparel, vol. 14 no. 1
Type: Research Article
ISSN: 1560-6074

Keywords

Article
Publication date: 20 November 2020

Libiao Bai, Zhiguo Wang, Hailing Wang, Ning Huang and Huijing Shi

Inadequate balancing of resources often results in resource conflict in the multiproject management process. Past research has focused on how to allocate a small amount of…

Abstract

Purpose

Inadequate balancing of resources often results in resource conflict in the multiproject management process. Past research has focused on how to allocate a small amount of resources optimally but has scarcely explored how to foresee multiproject resource conflict risk in advance. The purpose of this study is to address this knowledge gap by developing a model to predict multiproject resource conflict risk.

Design/methodology/approach

A fuzzy comprehensive evaluation method is used to transform subjective judgments into quantitative information, based on which an evaluation index system for multiproject resource conflict risk that focuses on the interdependence of multiple project resources is proposed. An artificial neural network (ANN) model combined with this system is proposed to predict the comprehensive risk score that can describe the severity of risk.

Findings

Accurately predicting multiproject resource conflict risks in advance can reduce the risk to the organization and increase the probability of achieving the project objectives. The ANN model developed in this paper by the authors can capture the essential components of the underlying nonlinear relevance and is capable of predicting risk appropriately.

Originality/value

The authors explored the prediction of the risks associated with multiproject resource conflicts, which is important for improving the success rate of projects but has received limited attention in the past. The authors established an evaluation index system for these risks considering the interdependence among project resources to describe the underlying factors that contribute to resource conflict risks. The authors proposed an effective model to forecast the risk of multiproject resource conflicts using an ANN. The model can effectively predict complex phenomena with complicated and highly nonlinear performance functions and solve problems with many random variables.

Details

Engineering, Construction and Architectural Management, vol. 28 no. 10
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 5 November 2021

Libiao Bai, Huijing Shi, Shuyun Kang and Bingbing Zhang

Comprehensive project portfolio risk (PPR) analysis is essential for the success and sustainable development of project portfolios (PPs). However, project interdependency creates…

Abstract

Purpose

Comprehensive project portfolio risk (PPR) analysis is essential for the success and sustainable development of project portfolios (PPs). However, project interdependency creates complexity for PPR analysis. In this study, considering the interdependency effect among projects, the authors develop a quantitative evaluation model to analyze PPR based on a fuzzy Bayesian network.

Design/methodology/approach

In this paper, the primary purpose is to comprehensively evaluate project portfolio risk considering the interdependency effect using a systematical model. Accordingly, a fuzzy Bayesian network (FBN) is developed based on the existing studies. Specifically, first, the risks in project portfolios are identified from the project interdependencies perspective. Second, a fuzzy Bayesian network is adopted to model and quantify the interaction relationships among risks. Finally, the model is implemented to analyze the occurrence situation and characteristics of risks.

Findings

The interdependency effect can lead to high-stake risks, including weak financial liquidity, a lack of cross-project members and project priority imbalance. Furthermore, project schedule risks and inconsistency between product supply and market demand are relatively sensitive and should also be prioritized. Also, the validity of this risk evaluation model has been proved.

Originality/value

The findings identify the most sensitive risks for guaranteeing portfolio implementation and reveal interdependency effect can trigger some specific risks more often. This study proposes for the first time to measure and analyze project portfolio risk by a systematical model. It can help systematically assess and manage the complicated and interdependent risks associated with project portfolios.

Details

Engineering, Construction and Architectural Management, vol. 30 no. 2
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 8 November 2011

Zongyan Zhao, Zhenhua Gao, Wenbo Wang and Mingruo Guo

The purpose of this paper is to investigate the effects of the components of whey‐protein based aqueous polymer‐isocyanate (API) adhesives on the bond strength.

Abstract

Purpose

The purpose of this paper is to investigate the effects of the components of whey‐protein based aqueous polymer‐isocyanate (API) adhesives on the bond strength.

Design/methodology/approach

The bond test (according to the JIS K6806‐2003 standard), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to characterise the whey‐protein based API adhesives with various formulations and processing technologies.

Findings

The good bond strength of the optimised whey‐protein based API adhesive was attributed to the formation of strong chemical bonds in the bondline and to the additions of polyisocyanate, polyvinyl alcohol (PVA) and nano‐CaCO3 powder that improved adhesive cohesive strength by either chemical crosslinks or mechanical interlocking. The blending procedures of whey protein, PVA, polyvinyl acetate (PVAc) and p‐p‐MDI had great impacts on the performances of the whey‐protein based API adhesives.

Research limitations/implications

SEM micrographs showed that the effects of blending processes on the bond strength, pot life and colour might be attributed to the particle size of hydrophobic p‐MDI droplet and p‐MDI distribution in the protein‐PVA matrix.

Practical implications

The study lays the foundations of the formulation design and the processing technology for preparing whey‐protein based API adhesives.

Originality/value

The effects of the components of whey‐protein based API adhesives and the effects of blending processes on the bond strength were investigated by means bond strength evaluation, FTIR and SEM analyses; whey protein is utilised successfully to prepare novel API adhesives for structural uses.

Details

Pigment & Resin Technology, vol. 40 no. 6
Type: Research Article
ISSN: 0369-9420

Keywords

Article
Publication date: 23 December 2022

Gaurav S. Chauhan

The purpose of this study is to measure mutual funds' manager performance by attributing it to their abilities to choose better securities (selectivity effect) and to allocate…

Abstract

Purpose

The purpose of this study is to measure mutual funds' manager performance by attributing it to their abilities to choose better securities (selectivity effect) and to allocate these securities better than their benchmarks (allocation effect). The study enables the authors to examine the relative contributions of the commonly known asset-pricing factors in mutual funds' performance.

Design/methodology/approach

To examine managers' ability to steer funds' returns, the authors conduct a two-dimensional holdings-based analysis using factor-specific decomposition of funds' excess returns into their ability to select and allocate securities better than their benchmarks. Subsequently, the authors conduct an analysis of the covariance (ANCOVA) due to these factors in explaining funds' excess returns over time.

Findings

While managers' ability to choose better securities than the benchmarks (the selectivity effect) appears modest, some funds (especially the winners) allocate securities in their portfolios better than their benchmarks (the allocation effect) based on their exposures to certain factors (e.g. the momentum factor for the winner funds). However, although funds consistently gain through their ability to predict the size and value factors well, they do not consistently possess the skills to predict the momentum factor.

Research limitations/implications

Although the paper analyzes all the available diversified funds, the sample excludes several other categories, such as thematic and international funds. Further, the analysis is based on equity-oriented Indian funds. Broader studies of changes in factor exposures and the inclusion of more factors apart from those conventionally used may shed more light on the managers' ability to maneuver these factors.

Practical implications

The results show that mutual fund managers lack persistence in their performance, even though some of them could predict specific factors well. Since the activity in active mutual funds could not lead to superior performance over time, investors could be better off by selecting cheaper passive funds for their long-term investments.

Originality/value

The paper presents a novel approach to studying funds' performance by conducting a two-dimensional holdings-based analysis to capture the relative contributions of common asset-pricing factors in the cross-section as well as over time.

Details

Managerial Finance, vol. 49 no. 7
Type: Research Article
ISSN: 0307-4358

Keywords

Article
Publication date: 17 June 2020

Luminița Nicolescu and Florentin Gabriel Tudorache

This paper aims to make an analysis of investment behaviour in mutual funds, by looking at different investment decision influencers and trying to identify the extent to which the…

Abstract

Purpose

This paper aims to make an analysis of investment behaviour in mutual funds, by looking at different investment decision influencers and trying to identify the extent to which the investment decision is knowledge-based. The paper has three main purposes, namely, to assess the degree to which the considered factors influence investment decision-making in young capital markets from Central and Eastern Europe (CEE); to compare the investment behaviour in the three considered countries; and to characterise investment behaviour in periods of economic turbulence.

Design/methodology/approach

The researchers considered a model of investment behaviour comprising six influencing factors. Inferential statistics through multiple linear regression was applied using the MATLAB R2014a software. The decision to invest was measured by the flow of new capital attracted by the fund (dependent variable) and the considered influencing factors (independent variables) were: the size of the fund, the risk associated to the fund, the growth of the fund, the growth of the fund category, the performance of the fund in its category. The research was conducted in Romania, Slovakia and Hungary. The period of study included the global economic crisis of 2007-2008.

Findings

The results illustrated that all considered factors do have an influence on the investment behaviour of investors in CEE, but with different levels of impact. The study concludes that the investment decision is partially knowledge-based, as investors in the region consider only some of the available information when making the decision to invest. Investment behaviour of investors in CEE is rather similar than dissimilar when deciding to invest in mutual funds. However, based on the differences between countries, it can be stated that the Hungarian investor is more mature and more informed than the others, when making investment decisions.

Originality/value

The study contributes to the exiting literature through the analysis of investment behaviour in young capital markets that are less studied in the literature. The limited number of studies considering mutual funds, usually comprise one fund category, while the present research considers all five most prevalent mutual funds categories for the studied period. It also contributed by collecting data from a less studied geographical region, CEE with three specific case studies, namely, Romania, Slovakia and Hungary that are looked at in a comparative manner.

Details

Kybernetes, vol. 50 no. 10
Type: Research Article
ISSN: 0368-492X

Keywords

Article
Publication date: 29 November 2018

Ulrik B. Nielsen, Martin Hannibal and Nathalie N. Larsen

The purpose of this paper is to provide a systematic review of the substantial and growing body of emerging market (EM) research. Through assessing the literature an organizing…

2097

Abstract

Purpose

The purpose of this paper is to provide a systematic review of the substantial and growing body of emerging market (EM) research. Through assessing the literature an organizing framework is formed to support a nuanced basis for future research and management decisions in EMs.

Design/methodology/approach

Following guidelines of seminal authors, the authors conduct a systematic review involving both leading field-specific and top-tier international business journals.

Findings

The empirical context of the literature is outlined showing dominance of studies involving China and India. Seminal contributions are identified based on cross-references in the EM field and citations in international business literature in general. The definitional elements of the most dominant definitions are compiled into an organizing framework.

Research limitations/implications

Researchers need to acknowledge the distinct contextual setting of specific regions and countries labeled as EMs. This entails considerations into the capacity of current frameworks to lend insights not just on EM contexts but the particular EM context in focus.

Practical implications

The findings suggest a more nuanced approach to managing activities in EM contexts. The proposed framework encloses the EM category on its distinct dimensions. Each provides a unique basis for managerial decision-making on specified EM activities.

Originality/value

This paper provides the first systematic review of the ever-growing body of EM research literature to map and assess the existing intellectual territory. Through this, the authors contribute to the development of the existing body of knowledge and form a solid basis for future research.

Details

International Journal of Emerging Markets, vol. 13 no. 6
Type: Research Article
ISSN: 1746-8809

Keywords

Article
Publication date: 28 March 2023

Hakan Erkutlu, Jamel Chafra, Hatice Ucak and Rahsan Kolutek

This paper aims to investigate the relationship between emotional labor and workplace violence based on the social exchange theory. Drawing on the social exchange theory, this…

Abstract

Purpose

This paper aims to investigate the relationship between emotional labor and workplace violence based on the social exchange theory. Drawing on the social exchange theory, this paper aims to investigate the relationship between emotional labor and workplace violence. Specifically, the authors take a relational approach by introducing positive patient treatment as the mediator. The moderating role of organizational support in the relationship between emotional labor and workplace violence is also considered.

Design/methodology/approach

The data of this study encompasses 536 nurses from 10 university hospitals in Turkey. Hierarchical multiple regression analysis was conducted to test the proposed model.

Findings

The findings of this study support the negative effect of emotional labor on workplace violence and the mediating effect of patient-positive treatment. Moreover, when organizational support is low, the relationship between emotional labor and workplace violence is strong. In contrast, the effect is weak when organizational support is high.

Practical implications

The findings of this study suggest that health-care administrators should offer more training to nurses to help them manage their emotions while interacting with their patients. This leads to positive interpersonal relationships, which, in turn, lowers workplace violence. Moreover, health-care administrators should pay more attention to the buffering role of perceived organizational support for those subordinates with low emotional labor and higher workplace violence.

Originality/value

The study provides new insights into emotional labor’s influence on workplace violence and the moderating role of organizational support in the link between emotional labor and workplace violence. The paper also offers practical assistance to nurses in the health-care industry interested in building positive patient treatment and trust with their patients and minimizing workplace violence.

Details

Journal of Aggression, Conflict and Peace Research, vol. 16 no. 1
Type: Research Article
ISSN: 1759-6599

Keywords

Article
Publication date: 2 February 2022

Sang Xiong, Hao Wu and Zhiyuan Liu

N-containing heterocyclic benzotriazole derivatives as new corrosion inhibitor for mild steel contained in emulsion were synthesized, and their inhibition behaviors for mild steel…

Abstract

Purpose

N-containing heterocyclic benzotriazole derivatives as new corrosion inhibitor for mild steel contained in emulsion were synthesized, and their inhibition behaviors for mild steel (MS) contained in emulsion were investigated by experiments and theoretical calculations, and this study aims to prove that two new inhibitors have excellent inhibition efficiency for steel corrosion.

Design/methodology/approach

2-(1H-benzo[d][1,2,3]triazol-1-yl)-N,N-dioctylacetamide (BTN) and O-(3-(1H-benzo[d] [1,2,3]triazol-1-yl)propyl) S-(2-(dioctylamino)-2-oxoethyl) carbonodithioate (BTSC) as a new corrosion inhibitor were synthesized, and their inhibition behaviors for MS contained in emulsion were investigated by gravimetric experiment, electrochemical tests and theoretical calculations.

Findings

Results of gravimetric experiment, electrochemical tests show that BTSC exhibit excellent inhibition performance, and it has a higher inhibition efficiency of 96.6% than that BTN. The resultant adsorption films from BTN/BTSC adsorbed on MS, effectively inhibiting the corrosion of MS is mainly through chemisorption and follow to Langmuir’s adsorption isotherm.

Originality/value

Experimental and theoretical calculations display that two new synthesized inhibitors are excellent corrosion inhibitor for MS contained in emulsion. Electrons of inhibitors mainly focus on the C, N, S and O atoms, which demonstrate these atoms are the centers of negative charge, and they supply electrons to Fe atoms through coordination bonds.

Details

Anti-Corrosion Methods and Materials, vol. 69 no. 2
Type: Research Article
ISSN: 0003-5599

Keywords

Open Access
Article
Publication date: 31 May 2024

Priya Malhotra

Passive investing has established itself as the dominant force in the world of professionally managed assets, surpassing the concept of index funds. Its meteoric rise is fueled…

2096

Abstract

Purpose

Passive investing has established itself as the dominant force in the world of professionally managed assets, surpassing the concept of index funds. Its meteoric rise is fueled by investors’ preference for its dual benefits of strong diversification and low cost. A comprehensive study of the economic model, addressed areas and market structure has not yet been conducted, despite the existence of numerous studies on more specific topics. To address this gap, this paper examines 943 articles on passive investing published between 1998 and 2022 in SCOPUS and Web of Science.

Design/methodology/approach

The study utilizes the most pertinent tools for conducting a systematic review by the PRISMA framework. This article is the result of SLR and extensive bibliometric analysis. Contextualized systematic literature review is used to screen and select bibliographic data, which is then subjected to a variety of bibliometric analyses. The study provides a bibliometric overview of works on passive investment research that are indexed in Scopus and Web of Science. Bibliometrix, VoS Viewer and Cite Space are the tools used to conduct content and network analysis, to ascertain the present state of research, as well as its focus and direction.

Findings

Our exhaustive analysis yields important findings. One, the previous decade has witnessed a substantial increase in the number of publications and citations; in particular, the inter-disciplinary and international scope of related research has expanded; Second, the top three clusters on “active versus passive funds,” “price discovery and market structures” and “exchange-traded funds (ETFs) as an alternative” account for more than fifty percent of the domain’s knowledge; Third, “Leveraged ETFs (LETFs)” and “environmental, social and governance (ESG)” are the two emerging themes in the passive investing research. Fourth, despite its many benefits, passive investing is not suitable for everyone. To get the most out of what passive investing has to offer, investors, intermediaries and regulators must all exercise sufficient caution. Our study makes a substantial contribution to the field by conducting a comprehensive bibliometric analysis of the existing literature, highlighting key findings and implications, as well as future research directions.

Research limitations/implications

While the study contributes significantly to the field of knowledge, it has several limitations that must be considered when interpreting its findings and implications. With our emphasis on academic journals, the study analyzed only peer-reviewed journal articles, excluding conference papers, reports and technical articles. While we are confident that our approach resulted in a comprehensive and representative database, our reliance on Elsevier Scopus and Web of Science may have resulted in us overlooking relevant work accessible only through other databases. Additionally, specific bibliometric properties may not be time-stable, and certain common distribution patterns of the passive investing literature may still be developing.

Practical implications

With this study, it has been possible to observe and chart the high growth trajectory of passive investing research globally, especially post-US subprime crisis. Despite the widespread adoption of passive investing as an investment strategy, it is not a one-size-fits-all proposition. Market conditions change constantly, and it frequently requires an informed eye to determine when and how much to shift away from active investments and toward passive ones. Currency ETFs enable investors to implement a carry trade strategy in their portfolios; however, as a word of caution, currency stability and liquidity can play a significant role in international ETFs. Similarly, LETFs may be better suited for dynamic strategies and offer less value to a long-term investor. Lastly, the importance of investor education cannot be underestimated in the name of the highly diversified portfolio when using passive alternatives, for which necessary efforts are required by regulators and investors alike.

Social implications

The inexorable trend to passive investing creates numerous issues for fund management, including fee and revenue pressure, which forces traditional managers to seek new revenue streams, such as illiquid and private assets, which also implies increased portfolio risk. Additionally, the increased transparency and efficiency associated with the ETF market indicates that managers must rethink the entire value chain, beginning with technology and the way investments interact. Passive investments have triggered changes in market structure that are still not fully understood or factored in. Active management and a range of valuation opinions on whether a price is “too low” or “too high” provide much-needed depth to a market as it attempts to strike a delicate balance between demand and supply forces, ensuring liquidity at all price points.

Originality/value

I hereby certify that I am the sole author of this paper and that no part of this manuscript has been published or submitted for publication.

Details

Journal of Capital Markets Studies, vol. 8 no. 1
Type: Research Article
ISSN: 2514-4774

Keywords

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