Psychological stress and muscle activity during data entry at visual display units

Abstract

The aim of this study was to evaluate whether psychological stress causes increased muscle activity, especially static muscle activity, in the trapezius muscles of the neck and shoulder. A pilot and a main study were carried out with 10 males and 20 females, respectively. The subjects performed a VDU data entry task under psychologically stressful and non-stressful conditions. Stress reactions were measured by different methods: heart rate and heart rate variability, hormonal excretion, and subjective ratings of mood and body symptoms. The stress condition caused an increase in heart rate. The low-frequency variability increased and the high-frequency variability decreased. Ratings of motivation and relaxation decreased, and subjects felt more activated. Pain and discomfort from the stomach increased. Adrenaline and noradrenaline in urine were unaffected. The majority of the subjects showed moderately increased static and median EMG levels during the stress condition. The interindividual variation in muscular reactions was large. Statistically significant increases were obtained for the myoelectric activity of the left (resting) trapezius muscle when pooling the two groups. It appears that the increase in muscle activity due to this type of mental stress is small, and factors other than ‘attention-related’ load may be more important. The results indicate that some individuals may be more prone to general muscle tension, making them more likely to develop symptoms and musculoskeletal pain.     

Bringing “A Different Femininity”: Immigrant Women from Bulgaria and Local Co-workers on a Factory Floor in Turkey

Qualitative Sociology - This article draws on life-course interviews with a group of Turkish immigrant women from socialist Bulgaria and locals who shared the same factory floor for approximately...     

Values and Risk Perceptions: A Cross‐Cultural Examination

This article examines the relationship between values and risk perceptions regarding terror attacks. The participants in the study are university students from Turkey (n = 536) and Israel (n = 298). Schwartz value theory (1992, 1994) is applied to conceptualize and measure values. Cognitive (perceived likelihood and perceived severity) and emotional (fear, helplessness, anger, distress, insecurity, hopelessness, sadness, and anxiety) responses about the potential of (i) being personally exposed to a terror attack, and (ii) a terror attack that may occur in one's country are assessed to measure risk perceptions. Comparison of the two groups suggests that the Turkish participants are significantly more emotional about terror risks than the Israeli respondents. Both groups perceive the risk of a terror attack that may occur in their country more likely than the risk of being personally exposed to a terror attack. No significant differences are found in emotional representations and perceived severity ratings regarding these risks. Results provide support for the existence of a link between values and risk perceptions of terror attacks. In both countries, self‐direction values are negatively related to emotional representations, whereas security values are positively correlated with emotions; hedonism and stimulation values are negatively related to perceived likelihood. Current findings are discussed in relation to previous results, theoretical approaches (the social amplification of risk framework and cultural theory of risk), and practical implications (increasing community support for a course of action, training programs for risk communicators).     

Computer integrated manufacturing applications in an automotive factory

Abstract

System integration is critical to development and implementation of CIM (computer integrated manufacture). This paper outlines the elements of the CIM system implementation strategy and deals with the representation of CIM implementation stages in TO FAS; which is a car manufacturing factory. In TOFA?, a pilot CIM project has been completed with success and other projects are in the development phase.     

Kompetenzen als Auswahlbasis von Coaches

Many companies are increasingly making use of coaching as an instrument of human resources development. The selection of the a suitable coach is more often based on intuition of the selecting human resources employees than it is objective. This underscores the need for a more systematic approach to the selection of coaches, which is based on the useable competencies of a coach and is also scientifically supported. Through a multiparadigm literature review and an explorative study, this article identifies seven base competencies of coaches, which can serve as a foundation for the selection of a coach.     

Zustandsorientierte Maschinenzuordnungs- und Instandhaltungsplanung

Previous research focuses on preventive maintenance strategies which minimize the costs of break downs and of maintenance activities. Deteriorating machine conditions with the consequence of rising scrap rates and declining productivity are mostly neglected. This paper investigates simultaneous optimization of production and maintenance planning by applying the condition-based maintenance strategy with parallel machines and overlapping capabilities. The presented model allows exploitation of machine wear considering optimal order assignments to machines which is illustrated by a numerical example.     

Critical Theorist,Postmodernist and Social Constructionist Paradigms in Organizational Analysis: A Paradigmatic Review of Organizational Learning Literature

In an effort to clarify alternative approaches to organizational analysis, this paper is concerned to stimulate the debate on how an inquiry into organizational phenomena, in general, and organizational learning, in particular, can be accomplished. Encouraging attention to different aspects of various paradigmatic approaches, the paper focuses on critical theory, postmodernism and social constructionism and how these paradigms have contributed and can contribute to the research in the subject domain of organizational learning. To this end, a paradigmatic review of the literature on organizational learning is offered in this paper. Organizational learning, as the study of learning processes of, and within, organizations, has attracted significant attention in academe since the early 1980s. There is a plethora of studies on organizational learning, which offer rich material for a paradigmatic review. This study highlights the need for further development of the field from alternative paradigmatic perspectives, with a view to generating more insights into the multifaceted, complex and changing nature of learning in contemporary organizations.     

Gender in Political Sex Scandals in Contemporary Turkey: Women’s Agency and the Public Sphere

Sex scandals in politics lead to intense public debates about fundamental issues, such as morality, publicity, and privacy, rendering gender inequalities more visible than ever. This article aims to reveal the complex gendered dynamics of the political culture by looking at sex scandals in contemporary Turkey. The ways in which these scandals have been narrated, negotiated, and resolved among the public and political actors provide grounds for analysis about the nature of patriarchal dynamics regarding women’s agency and public credibility communicated through their sexuality in contemporary Turkey.     

Aviation Risk Perception: A Comparison Between Experts and Novices

This article describes an exploratory investigation of the risk perceptions of experts and novices in relation to helicopter operations, under conditions where the participants are matched on various characteristics previously found to affect perceptions, such as demographic, gender, and background factors. The study reports considerable evidence of perceptual differences between the two participant groups (i.e., expert pilots and candidate pilots). We find that the experts' perceptions of relative risks are more veridical, in terms of their higher correlation with the true relative frequencies. A significant positive correlation between the flight hours and the contextual risk-taking tendency is also shown, leading the experienced pilots' choices toward risky alternatives in scenarios--a potential result of their overconfidence based on superior task performance. Possible explanations are offered for the findings and potential avenues for future research are identified.