bluuebunny/crossref_metadata_2025_split huggingface dataset:
Modification of the deflection formula for prestressed concrete hollow slab based on Timoshenko theory
Authors: Lai Jinlong , Liu Jinliang , An Jianyong , Jia Hang , Ma Jia 
Published: May 2020

PurposeTimoshenko deformation calculation theory is suited to open section beam, which is not suited to closed section beam due to the difference stress distribution between the open and the closed section beam. This study aims to modify the deflection formula for prestressed concrete hollow slab (closed section beam) based on the Timoshenko theory.Design/methodology/approach(1) The deflection curves of the prestressed concrete hollow slab beam were obtained under a single point force; (2) linear phases of the deflection values, which were calculated by Timoshenko theory and ABAQUS, were compared with the measured values; (3) a modified coefficient related to the loading location was obtained to modify the Timoshenko theoretical formula in calculating the deflection of the prestressed concrete hollow slab.Findings(1) There is a large difference between the calculated values and the measured values at 4.3 < a/H < 7.7, and the differences are between 24 and 33 percent; (2) the Timoshenko deflection formula has been modified to fit for the calculation of the prestressed concrete hollow slab. The mean of f/ft is 1.01, and the variation coefficient is 0.09 after modification. Therefore, the modified formula can be better applied in the deflection calculation of the prestressed concrete hollow slab.Originality/valueThe Timoshenko theory is the most classical theory, which is often used to calculate the deformation of beams. The modified deflection formula for prestressed concrete hollow slab based on the Timoshenko theory is reliable and convenient, which can help engineers to calculate the deflection for closed section beam quickly.
Organization-stakeholder relationship and performance of Iranian SMEs
Authors: Jalali Alireza , Jaafar Mastura , Ramayah T. 
Published: May 2020

PurposeThis study aims to explore the direct and indirect effects of organizational stakeholder’s relationship on performance through innovativeness and risk-taking among small and medium enterprises (SMEs).Design/methodology/approachThis study used the cluster sampling method to select the study sample and the questionnaire survey approach to 580 SMEs established in Tehran. A total of 150 completed questionnaires were returned. Partial least squares-structural equation modeling was administered to analyze data via the SmartPLS 3.0 software.FindingsThe survey outcomes revealed that organization-stakeholder relationship had an indirect effect on performance through innovativeness and risk-taking. The results indicated positive links for organization-stakeholder relationship and innovativeness, as well as the organization-stakeholder relationship to risk-taking.Practical implicationsThis research is beneficial for entrepreneurs who wish to learn about the specific resources significant for venture growth, to devise effective strategies to expand their relationship with stakeholders and to consider the significance of the correlations established, in this study, through innovativeness and risk-taking.Originality/valueThis research is one of the few attempts that have addressed the importance of innovativeness and risk-taking as the key mechanisms to transform the advantages of organization-stakeholder relationships to enhance performance.
The contingency effects of supply chain integration on management control system design and operational performance of hospitals in Ghana
Authors: Nartey Edward , Aboagye-Otchere Francis Kwaku , Yaw Simpson Samuel Nana 
Published: May 2020

PurposeThis paper extends prior contingency-based management accounting research by building and empirically testing a theoretical model of contingency effects of supply chain integration (SCI) on the dimensions of management control system (MCS) and supply chain operational performance (SCOP) of hospitals in Ghana.Design/methodology/approachThe paper uses factorial and structural path analysis of survey responses collected from 237 hospital accountants to model these relationships.FindingsThe results show that under strong SCI, the association between the MCS dimensions and hospital operational performance namely, cost effectiveness, flexibility and quality will be strengthened. In other words, the installation of MCS is more likely to provide a broad range of performance benefits for hospitals that align the four dimensions of the MCS with the dimensions of SCI (internal and external).Research limitations/implicationsA limitation of this study would be its limited scope, as it focused only on hospitals in one developing country. Therefore, the results as indicated here may have limited generalizability to other industries and countries.Practical implicationsWe theorize that using optimal amounts of the MCS, a high level of SCI is likely to reduce supply chain (SC) cost, improve speed, flexibility and quality of the SC among healthcare institutions in Ghana. Also, based on the direct impact on performance exhibited by the MCS dimensions, effective implementation of SCI decisions requires the use of optimal amounts of MCS for high performance.Originality/valueThe paper contributes to contingency-based management accounting research and provides theory-driven and empirically proven explanations for hospital managers in recognizing the importance of aligning the dimensions of SCI and MCS.
Ownership structure and demand for independent directors: evidence from an emerging market
Authors: Tran Quoc Trung 
Published: May 2020

PurposeIn this study, we examine how ownership structure affects the use of independent directors in Vietnam – an emerging stock market.Design/methodology/approachWe develop logit and tobit regression models to investigate the effects of ownership structure on the propensity to use independent directors and the number of independent directors on the board, respectively. Insider ownership and the use of independent directors are proposed to have a non-linear relationship.FindingsWith a sample of 1,318 observations collected from 192 listed firms over the period from 2008 to 2017, we find that insider ownership and independent director appointment have a U-shaped relationship. It is positive when insiders hold a small proportion of shares, and turns out to be negative when insiders hold a large percentage of shares. In addition, both state ownership and foreign ownership are negatively related to firm decisions of appointing independent directors.Practical implicationsOur findings imply that minority shareholders should have appropriate actions to reduce agency costs and protect their own interests. In addition, policymakers should improve the effectiveness of corporate governance legislation to increase the presence of independent directors in order to protect minority shareholders. Moreover, government agencies also need to increase the number of independent directors in state-controlled firms as a means to improve their corporate governance. Foreign investors may be a substitute for independent directors; therefore, firms without independent directors are able to improve their corporate governance by attracting foreign investors.Originality/valueWhile the extant literature shows that independent directors can help firms decrease agency costs of equity in financial decisions and performance, there are relatively few studies investigating corporate decisions to use independent directors. This paper contributes to the literature of corporate governance mechanisms through independent directors in emerging markets.
Corruption and SME financing structure: the case of Vietnamese manufacturing
Authors: Phan Mai Hong , Archer Lan 
Published: May 2020

PurposeCorruption has been evidenced as one of the major factors that drive a firm's dynamics and growth. This study examines the relationship between corruption and financing structure decisions of small and medium-sized enterprises (SMEs) in Vietnam.Design/methodology/approachThe authors use a longitudinal data set from the Vietnam's SME Survey in the period 2007–2013 and adopt the two-stage least squares method to deal with endogeneity.FindingsAfter controlling for endogeneity and firm heterogeneity, the authors find that, overall, corruption does significantly affect the decisions of financing sources. Given that, corruption increases the use of informal debt and decreases the levels of formal debt, owner's equity and retained earnings.Practical implicationsThe findings suggest implications for corruption-combating actions and policies.Originality/valueDifferent from previous studies that either provide evidence of government corruption and a firm's capital structure at the country level or focus on corruption and debt only, we deliver a more comprehensive analysis on the nexus between corruption and various financing sources.
An ambidexterity perspective toward configurations of knowledge flows: an empirical testing of its two-phase performance implications
Authors: Liu Fanghong , Wang Jiangang 
Published: May 2020

PurposeThe purpose of this paper is to examine how knowledge inflows and outflows interact to affect performance outcomes. Though previous studies have dealt with knowledge inflows and outflows, the quality and quantity characteristics of knowledge are often not taken into account, thus leaving a research gap with regards to the effect of their interactions on performance outcomes.Design/methodology/approachBased on Poisson regression analysis, this quantitative study fills the aforementioned research gaps by analyzing the ambidextrous configurations of knowledge flows from an ambidexterity perspective and examines their effects on two-phase performance (i.e. regular season and playoffs), using a longitudinal data set of National Basketball Association transactions from the 2003-2004 to 2014-2015 season.FindingsThe results suggest that the complementarity between knowledge inflows and outflows along the quality and quantity dimensions of knowledge, respectively, has a positive impact on two-phase performance, while the imbalance between knowledge inflows and outflows under the quality and quantity dimensions of knowledge, respectively, has a negative impact on playoffs performance (Phase 2). These findings suggest that organizations can balance knowledge inflows and outflows under a single quality or quantity dimension of knowledge. Furthermore, the interaction between the quantity of the inflows of knowledge and the quality of the outflows of knowledge and the interaction between the quality of the inflows of knowledge and the quantity of the outflows of knowledge are both positively related to two-phase performance. These findings suggest that organizations can balance knowledge inflows and outflows across quality and quantity dimensions of knowledge. Finally, the effects of the interaction between knowledge inflows and outflows on playoffs performance are greater than regular-season.Practical implicationsOrganizations should leverage ambidexterity to manage/balance knowledge inflows and outflows across quality and quantity dimensions, further enhancing performance outcomes.Originality/valueThis study, first, provides new insights into knowledge flows by distinguishing between the quality and quantity of knowledge, the inflows and outflows of knowledge, constructing ambidextrous configurations of knowledge flows from an ambidexterity perspective. Second, it contributes to the relationship between knowledge flows and organizational performance by revealing how ambidextrous configurations of knowledge flows exert different effects on performance outcomes. Third, it adds to the literature of ambidexterity-performance relationships and expands it to the context of sports.
Unpacking the efficacy of organizational routines in the financial services industry
Authors: Lemken Russell K. , Rowe William J. 
Published: May 2020

Purpose
This paper aims to examine how the efficacy of organizational routines varies and the mechanism through which organizational routines improve firm performance.

Design/methodology/approach
A theoretical model is proposed and tested using data from 53 interviews with financial services experts and 291 survey responses from financial advisors.

Findings
Operational and adaptive routines work through absorptive capacity to positively contribute to firm performance. The positive effects of adaptive routines are magnified under market governance.

Research limitations/implications
The examination of organizational routines is focused on routines at the firm level. Therefore, higher corporate-level routines were not measured. Response rate for the survey is a possible concern, so future research will benefit from increasing the response rate from the focal population.

Practical implications
This study benefits firms facing the dual role of customization and discipline in working with clients toward service delivery. The findings suggest that firms should develop both operational and adaptive routines, particularly when operating under market governance.

Originality/value
This study identified two categories of routines (operational and adaptive) and the circumstances in which the causal link between routines and performance varies. This study examined the potential moderating influence of a governance mode (market vs hierarchy). Absorptive capacity was identified as a mediator between the use of routines and firm performance.
Noise trading and stock market bubbles: what the derivatives market is telling us
Authors: Beyer Scott B. , Hughen J. Christopher , Kunkel Robert A. 
Published: May 2020

PurposeThe authors examine the relation between noise trading in equity markets and stochastic volatility by estimating a two-factor jump diffusion model. Their analysis shows that contemporaneous price deviations in the derivatives market are statistically significant in explaining movements in index futures prices and option-market volatility measures.Design/methodology/approachTo understand the impact noise may have in the S&P 500 derivatives market, the authors first measure and evaluate the influence noise exerts on futures prices and then investigate its influence on option volatility.FindingsIn the period from 1996 to 2003, this study finds significant changes in the volatility and mean reversion in the noise level and a significant increase in its relation to implied volatility in option prices. The results are consistent with a bubble in technology stocks that occurred with significant increases in noise trading.Research limitations/implicationsThis study provides estimates for this model during the periods preceding and during the technology bubble. The study analysis shows that the volatility and mean reversion in the noise level are much stronger during the bubble period. Furthermore, the relation between noise trading and implied volatility in the futures market was of a significantly larger magnitude during this period. The study results support the importance of noise trading in market bubbles.Practical implicationsBloomfield, O'Hara and Saar (2009) find that noise traders lower bid–ask spreads and improve liquidity through increases in trading volume and market depth. Such improved market conditions could have positive effects on market quality, and this impact could be evidenced by lower implied volatility when noise traders are more active. Indeed, the results in this study indicate that the level and characteristics of noise trading are fundamentally different during the technology bubble, and this noise trading activity has a larger impact during this period on implied volatility in the options market.Originality/valueThis paper uniquely analyzes derivatives on the S&P 500 Index in order to detect the presence and influence of noise traders. The authors derive and implement a two-factor jump diffusion noise model. In their model, noise rectifies the difference of analysts' opinions, market information and beliefs among traders. By incorporating a reduced-form temporal expression of heterogeneities among traders, the model is rich enough to capture salient time-series characteristics of equity prices (i.e. stochastic volatility and jumps). A singular feature of the authors’ model is that stochastic volatility represents the random movements in asset prices that are attributed to nonmarket fundamentals.
Who is reported missing from Canadian hospitals and mental health units?
Authors: Ferguson Lorna , Huey Laura 
Published: May 2020

PurposeInternational literature on missing persons suggests that a significant volume of missing person cases originate from hospitals and mental health units, resulting in considerable costs and resource demands on both police and health sectors (e.g., Bartholomew et al., 2009; Sowerby and Thomas, 2017). In the Canadian context, however, very little is known about patients reported missing from these locations – a knowledge deficit with profound implications in terms of identifying and addressing risk factors that contribute to this phenomenon. The present study is one such preliminary attempt to try to fill a significant research and policy gap.Design/methodology/approachThe authors draw on data from a sample of 8,261 closed missing person reports from a Canadian municipal police service over a five-year period (2013–2018). Using multiple logistic regression, the authors identify, among other factors, who is most likely to be reported missing from these locations.FindingsResults reveal that several factors, such as mental disabilities, senility, mental illness and addiction, are significantly related to this phenomenon. In light of these findings, the authors suggest that there is a need to develop comprehensive strategies and policies involving several stakeholders, such as health care and social service organizations, as well as the police.Originality/valueEach year, thousands of people go missing in Canada with a large number being reported from hospitals and mental health units, which can be burdensome for the police and health sectors in terms of human and financial resource allocation. Yet, very little is known about patients reported missing from health services – a knowledge deficit with profound implications in terms of identifying and addressing risk factors that contribute to this phenomenon. This manuscript seeks to remedy this gap in Canadian missing persons literature by exploring who goes missing from hospitals and mental health units.
The influence of binary pozzolanic replacements on the durability and corrosion performance of reinforced concrete
Authors: Mossalam Essam , Ahmed Nivin M. , Souaya Eglal M.R. , El-Sabbagh Basil 
Published: May 2020

Purpose
The purpose of this research is to study the physical and mechanical properties beside the durability of concrete as well as corrosion resistance of reinforced concrete by replacing Ordinary Portland cement (OPC) with different ratios of silica fume and meta-kaolin and applying two paint formulations to enhance corrosion resistance and mechanical properties. In this work, modified concrete mixes containing pozzolanic materials of industrial wastes such as silica fume (SF) with ratios ranging between (0, 10 and 15%) and calcined raw material such as meta-kaolin (MK) with ratios (0, 3, 5 and 10%), were introduced using water binder ratio (w/b) 0.45 to study their effect on the physico-mechanical properties and durability of concrete as well as corrosion protection performance of reinforced concrete. Two paint formulations containing the same ingredients except that one of them is free from talc (G1) and the other contains talc (G2) were applied on the rebars embedded in these modified mixes. Talc is known to offer high pH to the surrounding media.

Design/methodology/approach
Modified concrete mixes containing the coated reinforced concrete steel with the different paint formulations in presence and absence of talc were tested, and the corrosion behavior was studied using electrochemical impedance spectroscopy (EIS) in 3.5% NaCl, and the concrete mixes were also tested through their compressive strength, chloride permeability, scanning electron microscope/energy dispersive X-ray analysis and bond strength.

Findings
The results revealed that the hardened reinforced concrete mix containing 10% SF with 5% MK with embedded rebars coated with G2 (paint containing talc) was the best concrete system which offers concrete sustainability besides high corrosion protection performance, i.e. presence of talc in the paints combined with the effect of cement blended with SF and MK showed positive effect on the reinforced concrete properties that leads to more durability and workability.

Originality/value
The integrity of using two efficient methods of corrosion protection beside the effect of the different replacements in concrete mixes containing coated reinforced concrete steel with paint formulations free from talc (G1) and others containing talc (G2), which lead to fatal changes in the pH of the surrounding media (i.e. concrete which has high alkaline pH) to achieve good concrete properties aside with convenient paint formulations together.
New water-based flexographic ink based on new ter-polymer nano-particles as eco-friendly binders – Part II
Authors: Abd El-Wahab H. , Meligi G.A. , Hassaan M.G. , Lin L. 
Published: May 2020

Purpose
The purpose of this study is to prepare, characterise and evaluate nano-emulsions of ter-polymers of various compositions as eco-friendly binders for flexographic ink industry.

Design/methodology/approach
Various nano-emulsions of ter-polymers were prepared based on Vinyl acetate, Vinyl Versatate, butyl acrylate, acrylic acid and acrylamide monomers by means of a conventional seeded emulsion polymerisation technique, using K2S2O8 as the initiator. The characterisation of the prepared emulsions was performed using Fourier transform infrared, thermo-gravimetric analysis, gel permeation chromatography and transmission electron microscopy. A selection of co-polymers and ter-polymers were formulated with pigments and additional ingredients, as water-based flexographic inks. The inks were characterised for their rheological properties, pH, degree of dispersion, water-resistance and colour density.

Findings
It was found that the low viscosity of the prepared polymers may reduce the film thickness of the flexographic inks and may also increase the spreading of the ink on the surface. As a result, stable modified poly acrylate-based latex with improved physico-mechanical properties was obtained. The prepared latexes showed improved properties such as enhanced thermal stability and better water resistance. The effect of the emulsifier type on the properties of the resulting emulsion latexes and their corresponding films were investigated. Also, as the hydrophobic monomer increases, so does the colour density and increasing the binder ratio enhances the gloss values. The improving in gloss values were obtained and provide excellent adhesion properties for both the pigment particles and the base paper.

Research limitations/implications
The study focusses on the preparation of new water-based ter-polymer nano-particles and their use as eco-friendly binders for flexographic ink industry. Ink formulations based on other different type emulsion polymers could also be studied to assess the applicability of the ink formulation system found for other binders.

Practical implications
The ink formulations developed could find use in industrial-scale printing.

Originality/value
Eco-friendly environment and low-cost ink formulations for printing on paper substrates are novel.