Integrated safety stock optimization for multiple sourced stockpoints facing variable demand and lead time

The safety stock placement problem of a multi-stage supply chain comprising multiple sourced stockpoints is addressed in this paper. Each stockpoint faces variability in its downstream demand and suppliers' lead time. The maximum among these suppliers' lead time is determined by employing concepts of order statistics. It is required to find the fill rate and safety stocks at each stockpoint that leads to satisfying the end customer service level at minimum safety stock placement cost. Hence, the fill rates and the safety amounts are decided from a global supply chain perspective. Two models are proposed; a decentralized safety stock placement model and a centralized consolidation model. The decentralized model finds the safety amounts at each stockpoint required to face its underlying lead time demand variability. The consolidation model finds the consolidated safety amounts that will be kept in the relevant consolidation center at each stage. A Benders decomposition technique is developed to handle the nonlinearity and binary restrictions involved in the safety stock consolidation model. Strategies proposed by the consolidation model achieve 45.2-62% reduction in safety amounts that results in a cost savings ranging between 22.2-44.2% as compared to the strategies proposed by the decentralized model.     

Role stress,burnout and their effects on frontline hotel employees' job performance: evidence from Northern Cyprus

Based on data obtained from frontline hotel employees in Northern Cyprus, this study investigated the effects of role stress and burnout on job performance. It was found that role ambiguity decreased job performance while role conflict enhanced job performance. The results indicated that diminished personal accomplishment exerted a significant negative influence on job performance whereas the rest of the burnout dimensions did not. The results further showed that both role conflict and ambiguity exacerbated emotional exhaustion and depersonalisation. Role ambiguity was found to have a significant positive relationship with diminished personal accomplishment whereas role conflict was not. Copyright © 2007 John Wiley & Sons, Ltd.     

Measuring service quality of travel agents: evidence from Northern Cyprus

Service quality delivered by travel agents in Northern Cyprus was examined using a SERVQUAL scale. The translated instrument was purified using an item-categorisation technique and administered to 337 current users of travel agents in the region. Expectations and performance (SERVPERF) scores indicated that respondents were concerned most with the efficiency and least with the personalisation of the services offered. The largest service gaps were identified with the ‘modern’ appearance of the service and service-scape, and the smallest with interpersonal qualities of service. Multiple regression showed promptness, empathy, efficiency and service-scape aesthetics to be the main determinants of customer satisfaction. SERVPERF scores gave a better prediction of overall satisfaction and showed marginally better reliability and validity than those from which expectations were subtracted. Instead of the predicted SERVQUAL five-factor solution, factor analysis showed an underlying uni-dimensionality that is consistent with the findings of other authors. Possible management actions suggested by the findings are discussed in the context of the small business environment in Northern Cyprus.     

Informational power: A means for increased control in channels of distribution

Informational power has received little empirical treatment in the distribution literature, possibly because the conceptual work on the topic is disjointed. This article clarifies the concept of informational power and differentiates it from others with which it is often confused. Channel member control through informational power is explained and its possible effects on a distribution relationship are discussed, Hypothesized links between informational power, control, cooperation, and satisfaction are tested in a lab study. The findings indicate that a channel member's control over another's strategy increases with its informational power source.     

Customer Aggression,Emotional Exhaustion,and Hotel Employee Outcomes: A Study in the United Arab Emirates

The purpose of this study is to develop and test a conceptual model that investigates emotional exhaustion as a mediator of the effects of customer aggression on life satisfaction and turnover intentions. The model also examines supervisor support as a moderator of the relationships among customer aggression, emotional exhaustion, and the previously mentioned outcomes. Data were gathered from a sample of full-time Arab frontline employees in the international five-star chain hotels of Dubai in the United Arab Emirates. The hypothesized relationships were tested using LISREL 8.30 through path analysis. The results demonstrate that emotional exhaustion partially mediates the effects of customer aggression on life satisfaction and turnover intentions. The results further reveal that supervisor support acts as a moderator of the impacts of emotional exhaustion on these outcomes. Implications of the findings are discussed and their future research directions are offered.     

Emotional dissonance and emotional exhaustion among hotel employees in Nigeria

The purpose of this study was to develop and test a model, which investigated emotional dissonance and emotional exhaustion among employees in frontline service jobs. Data were gathered via self-administered questionnaires from a sample of frontline hotel employees in Nigeria, which is one of the neglected developing sub-Saharan countries in the African continent. The results of the hierarchical multiple regression analyses demonstrated a number of significant direct and partial mediating effects and provided support for the majority of the hypothesized relationships. Specifically, emotional dissonance partially mediated the relationships of negative affectivity and intrinsic motivation with emotional exhaustion. The results also revealed that emotional exhaustion partially mediated the effect of emotional dissonance on turnover intentions. Unexpectedly, emotional dissonance was found to be positively related to job performance. Implications for frontline employees and their managers and directions for future research are discussed.     

The effects of two directions of conflict and facilitation on frontline employees’ job outcomes

This study investigated the effects of two directions of conflict and facilitation simultaneously on job performance, job satisfaction, and affective organisational commitment based on data obtained from frontline hotel employees in Northern Cyprus. As expected, family–work conflict dimished job performance, while family–work facilitation enhanced job performance. Contrary to our prediction, conflict between work and family domains intensified job performance. The results of the path analysis revealed that work–family facilitation increased job satisfaction, while family–work facilitation triggered affective organisational commitment. The findings pertaining to the relationships between job performance, job satisfaction, and affective organisational commitment were in the hypothesised directions. Also, the results of the confirmatory factor analysis demonstrated that the four-factor model that consisted of work–family conflict, family–work conflict, work–family facilitation, and family–work facilitation was superior compared with other models tested. Implications of the empirical findings and their future research directions are discussed in our study.     

Income smoothing and foreign asset holdings

In this paper we construct a new methodology to measure the international income smoothing and we present stronger connection between foreign asset holding and international income smoothing for OECD countries.     

The effects of job and personal resources on hotel employees’ work engagement

Our study developed and tested a research model, which predicted the impacts of job (supervisor support) and personal resources (trait competitiveness and self-efficacy) on work engagement. Respondents were full-time employed frontline employees of the five- and four-star hotels of Abuja, the capital city of Nigeria. We used path analysis in LISREL 8.30 for testing the study hypotheses. The results demonstrated that trait competitiveness predicted three dimensions of work engagement better than did self-efficacy. That is, trait competitiveness enhanced frontline employees’ feelings of vigor, dedication, and absorption, while self-efficacy significantly and positively influenced only absorption. Unexpectedly, supervisor support had no significant effects on three dimensions of work engagement. The results further revealed that frontline employees who had elevated levels of competitiveness and adequate supervisor support in the workplace had higher self-efficacy beliefs. Implications of the empirical findings and limitations are discussed in our study.     

An empirical investigation of U.S. bank risk and the Mexican peso crisis

This paper examines two pairs of hypotheses about the effect of the Mexican Peso crisis on U.S. bank stock returns. We use a three-index market model as our empirical methodology because bank stocks are influenced more by both interest rate risk and foreign exchange risk than other non-banking stocks. The results show that the market reacted to each event promptly, supporting semi-strong market efficiency. To find out whether these effects created a domino effect in the U.S. banking system, a set of cross-sectional regressions were run. In general, the empirical results support the investor-contagion hypothesis, which indicates that the market penalized or rewarded banks without regard to their ecposure to the market for Mexican loans.