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1 – 10 of over 11000Zhou Shi, Jiachang Gu, Yongcong Zhou and Ying Zhang
This study aims to research the development trend, research status, research results and existing problems of the steel–concrete composite joint of railway long-span hybrid girder…
Abstract
Purpose
This study aims to research the development trend, research status, research results and existing problems of the steel–concrete composite joint of railway long-span hybrid girder cable-stayed bridge.
Design/methodology/approach
Based on the investigation and analysis of the development history, structure form, structural parameters, stress characteristics, shear connector stress state, force transmission mechanism, and fatigue performance, aiming at the steel–concrete composite joint of railway long-span hybrid girder cable-stayed bridge, the development trend, research status, research results and existing problems are expounded.
Findings
The shear-compression composite joint has become the main form in practice, featuring shortened length and simplified structure. The length of composite joints between 1.5 and 3.0 m has no significant effect on the stress and force transmission laws of the main girder. The reasonable thickness of the bearing plate is 40–70 mm. The calculation theory and simplified calculation formula of the overall bearing capacity, the nonuniformity and distribution laws of the shear connector, the force transferring ratio of steel and concrete components, the fatigue failure mechanism and structural parameters effects are the focus of the research study.
Originality/value
This study puts forward some suggestions and prospects for the structural design and theoretical research of the steel–concrete composite joint of railway long-span hybrid girder cable-stayed bridge.
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Xin Guo, Jiesong Tu, Zhibin Fan, Baoshuai Du, Hongfei Shang, Jiangfeng An and Dan Jia
Corrosion thinning reduces the effective cross-sectional areas of steel structures and degrades their mechanical properties. This study aims to investigate the relationship…
Abstract
Purpose
Corrosion thinning reduces the effective cross-sectional areas of steel structures and degrades their mechanical properties. This study aims to investigate the relationship between the corrosion thinning of carbon steel for transmission towers and the degradation of its mechanical properties.
Design/methodology/approach
A macroscopic finite element model of a transmission tower was established and then combined with the corrosion thinning and mechanical properties of Q355 steel in different test periods measured in neutral salt spray, SO2 atmosphere and wet heat environments to conduct a finite element simulation of a transmission tower with different corrosion thinning of Q355 steel.
Findings
When the residual thickness of the tower leg angle was reduced to 4.03 mm, the maximum stress solved in the simulation exceeded the yield strength, with the tower already at risk of collapse owing to corrosion failure under extreme conditions of basic wind speed.
Originality/value
This study innovatively utilises transmission tower finite element models and experimental data from mechanical degradation experiments to quantify the relationship between corrosion thinning and the mechanical properties of Q355 steel, ensuring the effective assessment of the mechanical properties of corroded transmission towers.
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Oguzhan Ozcelebi, Jose Perez-Montiel and Carles Manera
Might the impact of the financial stress on exchange markets be asymmetric and exposed to regime changes? Departing from the existing literature, highlighting that the domestic…
Abstract
Purpose
Might the impact of the financial stress on exchange markets be asymmetric and exposed to regime changes? Departing from the existing literature, highlighting that the domestic and foreign financial stress in terms of money market have substantial effects on exchange market, this paper aims to investigate the impacts of the bond yield spreads of three emerging countries (Mexico, Russia, and South Korea) on their exchange market pressure indices using monthly observations for the period 2010:01–2019:12. Additionally, the paper analyses the impact of bond yield spread of the US on the exchange market pressure indices of the three mentioned emerging countries. The authors hypothesized whether the negative and positive changes in the bond yield spreads have varying effects on exchange market pressure indices.
Design/methodology/approach
To address the research question, we measure the bond yield spread of the selected countries by using the interest rate spread between 10-year and 3-month treasury bills. At the same time, the exchange market pressure index is proxied by the index introduced by Desai et al. (2017). We base the empirical analysis on nonlinear vector autoregression (VAR) models and an asymmetric quantile-based approach.
Findings
The results of the impulse response functions indicate that increases/decreases in the bond yield spreads of Mexico, Russia and South Korea raise/lower their exchange market pressure, and the effects of shocks in the bond yield spreads of the US also lead to depreciation/appreciation pressures in the local currencies of the emerging countries. The quantile connectedness analysis, which allows for the role of regimes, reveals that the weights of the domestic and foreign bond yield spread in explaining variations of exchange market pressure indices are higher when exchange market pressure indices are not in a normal regime, indicating the role of extreme development conditions in the exchange market. The quantile regression model underlines that an increase in the domestic bond yield spread leads to a rise in its exchange market pressure index during all exchange market pressure periods in Mexico, and the relevant effects are valid during periods of high exchange market pressure in Russia. Our results also show that Russia differs from Mexico and South Korea in terms of the factors influencing the demand for domestic currency, and we have demonstrated the role of domestic macroeconomic and financial conditions in surpassing the effects of US financial stress. More specifically, the impacts of the domestic and foreign financial stress vary across regimes and are asymmetric.
Originality/value
This study enriches the literature on factors affecting the exchange market pressure of emerging countries. The results have significant economic implications for policymakers, indicating that the exchange market pressure index may trigger a financial crisis and economic recession.
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Fabienne T. Amstad and Norbert K. Semmer
Recovery seems to be one of the most important mechanisms explaining the relationship between acute stress reactions and chronic health complaints (Geurts & Sonnentag, 2006)…
Abstract
Recovery seems to be one of the most important mechanisms explaining the relationship between acute stress reactions and chronic health complaints (Geurts & Sonnentag, 2006). Moreover, insufficient recovery may be the linking mechanism that turns daily stress experiences into chronic stress. Given this role recovery has in the stress process, it is important to ask in which contexts and under what circumstances recovery takes place.
Ludvík Prášil and Jaroslav Mackerle
The finite element method (FEM) has become the prevalent technique used for analyzing physical phenomena in the field of structural, solid and fluid mechanics. The output of…
Abstract
Purpose
The finite element method (FEM) has become the prevalent technique used for analyzing physical phenomena in the field of structural, solid and fluid mechanics. The output of scientific papers is fast growing and professionals are no longer able to be fully up‐to‐date with all the relevant information. The purpose of this paper is to provide a bibliographical review on the application of FEM in mechanical engineering, specifically for the analyses and simulations of gears and gear drives from the theoretical as well as practical points of view.
Design/methodology/approach
The following topics on gears and gear drives are handled from the computational points of view: gears in general, spur gears, helical gears, spiral bevel and hypoid gears, worm gears and other gear types and gear drives. The paper is organized into two parts. In the first one each topic is handled in a short text, relevant keywords are presented and current trends in applications of finite element techniques are briefly mentioned. The second part lists references of papers published for the period 1997‐2006.
Findings
This bibliography is intended to serve the needs of engineers and researchers as a comprehensive source of published papers on design, analysis and simulation of gears and gear drives.
Originality/value
The bibliography listed is by no means complete but it gives a comprehensive representation of different finite element applications on the subjects. It will save time for readers looking for information dealing with described subjects, not having an access to large databases or willingness to spend time with uncertain information retrieval.
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Ika Zenita Ratnaningsih, Mohd Awang Idris and Yulita Yulita
This study aims to investigate the spillover–crossover effects on the work–family interface, with an emphasis on work–family conflict (WFC) and family–work conflict (FWC) on…
Abstract
Purpose
This study aims to investigate the spillover–crossover effects on the work–family interface, with an emphasis on work–family conflict (WFC) and family–work conflict (FWC) on marital satisfaction and personal burnout.
Design/methodology/approach
Data were collected from matched dyads by 300 teachers and their spouses (N = 600) in Indonesia. Multiple regression analysis served to test the hypotheses.
Findings
The results showed significant spillover–crossover effects of WFC on personal burnout amongst working wives to their spouses, but not working husbands to their spouses. Moreover, there was a spillover effect of FWC on personal burnout amongst working wives, and a crossover effect of FWC on spouses' personal burnout amongst working husbands to their spouses. However, there was no spillover–crossover effect of WFC and FWC on marital satisfaction for both working wives and husbands.
Practical implications
The findings have implications for occupational stress management. Decision-makers have to create a positive atmosphere that reduces WFC in the workplace by providing support to the workers.
Originality/value
This study contributes to the literature by exploring the crossover effects of WFC and FWC amongst marital spouses in a country with inherent conservatism and traditional gender role perspectives.
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Jiayi Song, Hao Jiao and Canhao Wang
Innovative behavior is a microfoundation of an organization’s innovation. Knowledge workers are the main creators of innovations. With the boundaries between work and family…
Abstract
Purpose
Innovative behavior is a microfoundation of an organization’s innovation. Knowledge workers are the main creators of innovations. With the boundaries between work and family becoming increasingly ambiguous, the purpose of this study is to explore how the work–family conflict affects knowledge workers’ innovative behavior and when such a conflict arises.
Design/methodology/approach
To test the theoretical model, this study collected data from a time-lagged matched sample of 214 dual-career couples. The data were analyzed with the bias-corrected bootstrapping method.
Findings
The results of this study showed that work-to-family conflict had not only a direct negative effect on knowledge workers’ innovative behavior but also an indirect effect through spouses’ within-family emotional exhaustion and knowledge workers’ family-to-work conflict. If wives’ gender role perceptions are traditional, then the indirect serial mediating effect is weakened, but if such perceptions are egalitarian, then the mentioned effect is aggravated.
Practical implications
In terms of organizational implications, managers could alter their approach by reducing detrimental factors such as work–family conflict to improve knowledge workers’ innovative behavior. Emotional assistance programs for both knowledge workers and their spouses can be used to prevent the detrimental effect of work–family conflict on innovative behavior. As to social implications, placing dual-career couples into a community of likeminded individuals and promoting their agreement on gender role identity will greatly reduce the negative effects of work–family conflict.
Originality/value
Starting from the perspective of the behavior outcome of knowledge management, this study advances the existing knowledge management literature by enriching the antecedents of knowledge workers’ innovative behavior, illuminating a spillover–crossover–spillover effect of work–family conflict on knowledge workers’ innovative behavior and identifying the boundary condition of this transmission process.
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The crude oil market plays a key role in addressing the issue of energy economics. This paper aims to detect the causality relationship between the crude oil market and economy…
Abstract
Purpose
The crude oil market plays a key role in addressing the issue of energy economics. This paper aims to detect the causality relationship between the crude oil market and economy based on the financial system.
Design/methodology/approach
This paper used the static and dynamic Hatemi-J Bootstrap Toda–Yamamoto and Diebold–Yilmaz connectedness index. The Hatemi-J Bootstrap Toda-Yamamoto approach allows researchers to use nonstationary data and that method is robust to nonnormal distribution and heteroscedasticity. The Diebold–Yilmaz connectedness index model provides researchers to detect the power of connectedness besides linkage direction. The analyzed period is the span from January 3, 2005 to October 3, 2022.
Findings
The results show bidirectional causality in the full sample but unidirectional causality before and after the 2008 financial crisis. During the 2008 financial crisis period and the COVID-19 period, there was a bidirectional and unidirectional causality, respectively. The connectedness approach indicates that the crude oil market affects financial stress through investors’ risk preferences.
Research limitations/implications
The Diebold–Yilmaz spillover index model is based on vector autoregression methods with a stationarity precondition. However, some of the five dimensions that constitute the financial stress index (FSI) are nonstationary in level. Therefore, the authors takes the first difference of the nonstationary data.
Practical implications
The linkage between the crude oil market and the FSI provides useful information for investors and policymakers. For instance, this paper indicates that an investor wanted to forecast future value of the crude oil (financial stress) should consider the current and past values of financial stress (crude oil). Moreover, policymaker should consider the crude oil market (FSI) to make a policy proposal for financial system (crude oil market).
Originality/value
Recently, indicators of economic activity levels (economic policy uncertainty, implied volatility index) have begun to be considered to analyze the relationship between energy and the economy but very little is known in the literature about the leading and lagging roles of data in subsample periods and the linkage channel. The other originality of this research is using the new econometric approaches.
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The purpose of this paper is to examine the spillover effects of coworker incivility on customer-directed counterproductive work behavior (CWB) and how emotional exhaustion…
Abstract
Purpose
The purpose of this paper is to examine the spillover effects of coworker incivility on customer-directed counterproductive work behavior (CWB) and how emotional exhaustion mediates the relationship between them. The authors predicted that job calling and perceived organizational support (POS) would moderate the relationship between experienced coworker incivility and service employees’ emotional exhaustion, respectively.
Design/methodology/approach
Survey data from 252 frontline employees working at six full-service luxury hotels in South Korea were examined.
Findings
The results indicated that experienced coworker incivility was positively related to customer-directed CWB. In addition, the relationship between experienced coworker incivility and customer-directed CWB was mediated by emotional exhaustion. Finally, employees’ job calling attenuated the positive effects of experienced coworker incivility on customer-directed CWB. The theoretical and practical implications of this study are discussed, together with its limitations and future research directions.
Originality/value
The main contribution of the study is to provide an empirical framework for how instances of coworker incivility spillover, which lead to the target employee’s customer-directed CWB through emotional exhaustion, and how personal (e.g. job calling) may buffer against negative effects.
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Timothy P. Munyon, Denise M. Breaux, Laci M. Rogers, Pamela L. Perrewé and Wayne A. Hochwarter
Building on reciprocity and crossover theory, this paper aims to examine how mood crossover from one partner in a relational dyad influences the likelihood of reciprocal mood…
Abstract
Purpose
Building on reciprocity and crossover theory, this paper aims to examine how mood crossover from one partner in a relational dyad influences the likelihood of reciprocal mood crossover from the other partner.
Design/methodology/approach
Using a survey sample of 180 dual‐career married couples, the paper explores this phenomenon for both positive and negative mood crossover from husbands to wives and wives to husbands.
Findings
The data supported the paper's four hypotheses. Mood crossover was found to operate in a similar fashion for both husbands and wives after controlling for negative and positive affectivity, work and home demands, work autonomy, and support from the organization, non‐work friends, and spouse. Specifically, when wives (husbands) reported positive (negative) mood crossover from their husbands (wives), their husbands (wives) also reported positive (negative) mood crossover from them.
Research implications/limitations
The findings suggest positive and negative mood crossover is reciprocated among individuals in a dual‐career marriage context. This implies that the effects of positive and negative crossover may be magnified through relational interactions at home. However, the design of this study is not sufficient to determine the causality of this relationship.
Practical implications
The findings suggest that the positive and negative work experiences of one partner in a relationship affect the well being and moods of their partner at home. Consequently, organizations may consider wellness or positive reinforcement programs to encourage positive crossover between the domains of work and home.
Originality/value
This study examines how individuals in a dual‐partner reciprocate the negative and positive crossover of moods of their partner from work to home.
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