WebStress: A web interface to explore a multidatabase bibliographic corpus on occupational stress

A bibliographic study on a multidisciplinary subject, such as occupational stress, requires a multidatabase query facility. Given this, we searched eight databases belonging to different fields (medicine, psychology, etc.) and from different countries. Thus, more than 26000 references on occupational stress were gathered. A bibliographic corpus of this sort is unusable because of the heterogeneous format of the records and the number of duplicate entries. Considering the limitations of commercial programs, we have developed a system, called WebStress, for reformatting the data and removing duplicates. The huge number of references and the research needs of updating and searching have necessitated the addition of several other functions to WebStress. Therefore WebStress comprises a web interface that makes it possible to search the corpus with advanced features (using clustering, a specialized thesaurus on stress and Boolean queries). In addition to the usual bibliographic queries on a specific database such as Medline, WebStress provides bibliometric analysis of the corpus, which might contribute to a detailed analysis on occupational stress in order to highlight the networks of researchers and to find the main topics studied in this area. WebStress is not yet available to researchers in general. It is being further developed, and also permission needs to be obtained from the eight commercial bibliographic databases that it consults.     

Efficient algorithms for supergraph query processing on graph databases

We study the problem of processing supergraph queries on graph databases. A graph database D is a large set of graphs. A supergraph query q on D is to retrieve all the graphs in D such that q is a supergraph of them. The large number of graphs in databases and the NP-completeness of subgraph isomorphism testing make it challenging to efficiently processing supergraph queries. In this paper, a new approach to processing supergraph queries is proposed. Specifically, a method for compactly organizing graph databases is first presented. Common subgraphs of the graphs in a database are stored only once in the compact organization of the database, in order to reduce the overall cost of subgraph isomorphism testings from the stored graphs to queries during query processing. Then, an exact algorithm and an approximate algorithm for generating the significant feature set with optimal order are proposed, followed by the algorithms for indices construction on graph databases. The optimal order on the feature set is to reduce the number of subgraph isomorphism testings during query processing. Based on the compact organization of graph databases, a novel algorithm for testing subgraph isomorphisms from multiple graphs to one graph is presented. Finally, based on all the above techniques, a query processing method is proposed. Analytical and experimental results show that the proposed algorithms outperform the existing similar algorithms by one to two orders of magnitude.     

Information systems and occupational stress: a theoretical framework

The information systems (IS) profession is a stressful profession. However, there is little theoretical or empirical research on the effects of occupational stress on IS professionals. A major reason is because IS professionals and researchers are unaware of the consequences of occupational stress and unfamiliar with the occupational stress literature. The purpose of this paper is to propose a theoretical framework of occupational stress for IS professionals. Based on a review of the IS, psychology, and general management literature, 12 occupational stress models are identified. These stress models are analyzed along the two dimensions of focus and theoretical foundation. The analysis shows that most of the occupational stress models consider stress to be the consequence of the interaction between an environmental stimulus and the idiosyncratic response of the individual. Further analysis of these models suggests that nine key points are critical in developing a theoretical framework of occupational stress for IS professionals. A mapping of how the existing stress models incorporate the nine key points is also presented. The findings of this paper can provide a theoretical basis for further research on the occupational stress of IS professionals. Finally, an agenda for further research into this issue is presented.     

Qualitative research on leadership: A critical but appreciative review

This article reviews a large number of articles that derive from qualitative research on leadership that were published prior to 2004 in peer-reviewed journals. The article then goes on to examine critically but appreciatively the ways in which qualitative research on leadership is and is not distinctive. This review shows that while qualitative research has made some important contributions to certain areas of leadership, such as the role of leaders in the change process, it is sometimes not as distinctive, when compared to quantitative research, as might be supposed. The piece also examines studies that combine quantitative with qualitative research. The different ways in which the two approaches are combined is a particular emphasis in this examination. In addition, the article explores the issue of whether the corpus of research that has been accumulated by qualitative researchers can be combined with that of quantitative researchers. A central ingredient of the discussion of qualitative research is the tendency for many researchers not to build sufficiently on the studies of leadership conducted by others. It is argued that giving greater attention to this issue will allow the contributions of qualitative research on leadership to become clearer.     

The Present and Future Status of Stress Research

Five research thrusts were identified in current stress research: replications and extensions of ISR's work environment and health model, Type A behavior, psychological burnout, social support, and the work-nonwork interface. However, one or more limitations were noted in stress research methodology which limited the value of much of this work. In addition to addressing these short-comings, future stress researchers are encouraged to employ longitudinal designs and include measures of physiological symptoms. Stress researchers should concentrate on: stress as a process, blue and pink collar workers, work stress of women, sex differences in stress dynamics, and the work, family and societal interface. In addition, bridging the gap between the producers and consumers of stress research findings would achieve betterr informed research and practice. Although occupational stress has become a central variable in OB research, our understanding of stress phenomena remains rather limited. Increases in understanding will continue to come slowly.     

Changing work environments: Innovative coping responses to occupational stress

To what degree do individuals adapt their work environments in response to occupational stress? The research reported below addresses this question through a qualitative questionnaire survey that assesses the extent to which innovation is used as a stress coping strategy amongst health care professionals (community and hospital nurses, administration workers and paramedics; N = 333). Overall, 32% of these workers reported a coping response subsequently coded as innovative, and significant between-occupational group differences in the frequency of usage were found. Overwork, procedural difficulties and dealing with others were the stressors eliciting the greatest number of innovative coping responses. The study indicated that such responses were perceived as an effective and important way of dealing with occupational stress. It is concluded that stress management programmes that encourage individuals to change workplace factors through innovation, would be a worthwhile addition to interventions that emphasize individual adaptation to stressful work environments.     

信息性与控制性:工作压力源的性质研究

本研究在自我决定理论(self-determination theory,SDT)的框架指导下,对264名企业员工所感受的压力源的性质进行了分析.结果发现,根据作用方式或者个体评价方式的不同,同一个压力源可以再分为信息性或控制性;信息性压力源所产生的压力感受显著地低于控制性的压力源所产生的压力感受;人际与角色压力、工作特征压力、组织结构和氛围压力均可以再分为信息性与控制性,两种性质的压力源产生的压力感受均存在显著性的差异;对不同代际的员工而言,两种性质的压力源所产生的压力感受存在显著性的差异.研究结论启发管理者应关注员工对压力源的个人评价,同时注意不同年龄的员工所感受到的压力特点,在压力源无法改变的前提下,为员工创造信息性的环境,可以显著缓解员工的压力感受.     

Models of Management System Standards: A Review of the Integration Issues

The subject of Integrated Management Systems in terms of quality, environmental and occupational health and safety management has become of increasing interest to researchers and business alike during the last 3 years or so. This paper focuses on a review of the various models of integration found in the academic literature and also those advocated by the standards bodies, such as the British Standards Institution and the International Organization for Standardization. A number of writers advocate alignment of ISO 9001 and ISO 14001 and present models to facilitate this; however, integration into a single standard is, in general, not favoured. Various models have been developed to overcome these difficulties, but the authors believe that none is completely satisfactory. It is considered that a model of integration based on the EFQM Model for Business Excellence will allow the limitation of the standards to be overcome and the total systems approach to integration to be facilitated.     

Determinants of perceived occupational stress among Chinese offshore oil workers

This is the first comprehensive study to explore the determinants of perceived sources of occupational stress among workers in the rapidly expanding Chinese offshore oil industry. In this study we surveyed 561 Chinese workers in a state-owned oil company using a questionnaire that measured occupational stress and Type A personality behaviour (TABP), social support and other socio-demographic data. Occupational stress was assessed by the Occupational Stress Scale, adapted from the questionnaire developed in previous studies (Cooper & Sutherland, 1987; Sutherland & Cooper, 1996). Using factor analyses, we identified nine sources of stress: 'interface between job and family/social life'; 'career and achievement'; 'safety'; 'management problems and relationship with workmates'; 'physical environment of workplace'; 'living environment'; 'managerial role'; 'ergonomics'; and 'organizational structure'. We performed hierarchical regression analyses on each source of stress with variables reflecting socio-demographic characteristics, TABP and social support. Better-educated workers perceived more stress from the interface between their job and family or social life and career achievement, but less stress from ergonomics. Type A workers perceived more stress from career achievement and the living environment. Social support was significantly associated with four sources of stress. Workers with different job titles perceived stress from different sources. Our findings imply that, in the stress management of offshore oil workers, different strategies and methods could be applied to different occupational groups, and to workers with different personalities and socio-demographic characteristics.     

Perceived physical work capacity, stress, sleep disturbance and occupational accidents among firefighters working during a strike

Fire-fighting and rescue work are arranged in such a way that various kinds of accidents and catastrophes can be handled. In an understaffed situation, such as a strike, this goal may not be met. The objective of this study was to investigate factors associated with perceived physical work capacity, stress, sleep disturbance, and occupational accidents among firefighters who remained at work during an extended strike. A cross-sectional questionnaire study was carried out among 543 firefighters (83% of the target group) in 71 fire brigades in Finland. After the strike had lasted for 9 to 11 weeks, most of the firefighters perceived their physical work capacity to be rather good or very good. Stress increased along with a decreasing number of personnel in a crew (OR= 2.3, CI= 1.0-5.3, for less than 75% of a normal crew vs. normal crew) and with decreasing number of personnel in a shift (OR= 2.4, CI= 1.1-5.4, for less than 25% of normal shift vs. normal shift). Sleep disturbance was reported to occur as soon as the total working time exceeded 50 h/week. Working more than 70 h/week increased the risk of occupational accidents almost 4-fold compared with working no more than 50 h/week. These results suggest that exceptional situations, such as a strike, are a challenge to human capacity. With time, increased stress and sleep disturbance may lead to serious consequences.     

Job stress,burnout and substance use among urban transit operators: The potential mediating role of coping behaviour

Abstract

Urban transit operators, compared to other occupational groups, have higher rates of mortality and morbidity. A major risk factor is the highly stressful objective environment. This study used structural equation modelling to test a model hypothesizing that transit operators’ coping behaviours in responding to daily job hassles mediate the associations of work stress with burnout and substance use. The study sample consisted of 1231 transit operators who participated in the San Francisco MUNI Health and Safety Study. The results showed a direct and strong association between transit operators’ daily job stress and symptoms of occupational burnout even when a series of controls and coping behaviours were considered. In addition, use of “disengage-deny” and escapist strategies to cope with job stress was positively associated with burnout; the job stress–burnout association was partially mediated through such coping practices. Daily job stress was related to substance use only indirectly and mediated through burnout and use of “disengage-deny” and escapist coping strategies. “Disengage-deny” coping strategies might help reduce substance use whereas escapist coping strategies might increase such use. Overall, our findings suggest that coping behaviour may be an important correlate of transit operators’ ill health. Interventions enabling healthy coping behaviours may help reduce health risks for this occupational group.     

Perceived physical work capacity,stress, sleep disturbance and occupational accidents among firefighters working during a strike

Fire-fighting and rescue work are arranged in such a way that various kinds of accidents and catastrophes can be handled. In an understaffed situation, such as a strike, this goal may not be met. The objective of this study was to investigate factors associated with perceived physical work capacity, stress, sleep disturbance, and occupational accidents among firefighters who remained at work during an extended strike. A cross-sectional questionnaire study was carried out among 543 firefighters (83% of the target group) in 71 fire brigades in Finland. After the strike had lasted for 9 to 11 weeks, most of the firefighters perceived their physical work capacity to be rather good or very good. Stress increased along with a decreasing number of personnel in a crew (OR= 2.3, CI= 1.0-5.3, for less than 75% of a normal crew vs. normal crew) and with decreasing number of personnel in a shift (OR= 2.4, CI= 1.1-5.4, for less than 25% of normal shift vs. normal shift). Sleep disturbance was reported to occur as soon as the total working time exceeded 50 h/week. Working more than 70 h/week increased the risk of occupational accidents almost 4-fold compared with working no more than 50 h/week. These results suggest that exceptional situations, such as a strike, are a challenge to human capacity. With time, increased stress and sleep disturbance may lead to serious consequences.     

Enabling high-dimensional range queries using <Emphasis Type="Italic">k</Emphasis>NN indexing techniques: approaches and empirical results

Many modern search applications are high-dimensional and depend on efficient orthogonal range queries. These applications span web-based and scientific needs as well as uses for data mining. Although k-nearest neighbor queries are becoming increasingly common due to mobile and geospatial applications, orthogonal range queries in high-dimensional data remain extremely important and relevant. For efficient querying, data is typically stored in an index optimized for either kNN or range queries. This can be problematic when data is optimized for kNN retrieval and a user needs a range query or vice versa. Here, we address the issue of using a kNN-based index for range queries, as well as outline the general computational geometry problem of adapting these systems to range queries. We refer to these methods as space-based decompositions and provide a straightforward heuristic for this problem. Using iDistance as our applied kNN indexing technique, we also develop an optimal (data-based) algorithm designed specifically for its indexing scheme. We compare this method to the suggested naïve approach using real world datasets. The data-based algorithm consistently performs better.     

Aligning Chemical Assessment Tools Across the Hazard-Risk Continuum

With the growing number and diversity of hazard and risk assessment algorithms, models, databases, and frameworks for chemicals and their applications, risk assessors and managers are challenged to select the appropriate tool for a given need or decision. Some decisions require relatively simple tools to evaluate chemical hazards (e.g., toxicity), such as labeling for safe occupational handling and transport of chemicals. Others require assessment tools that provide relative comparisons among chemical properties, such as selecting the optimum chemical for a particular use among a group of candidates. Still other needs warrant full risk characterization, coupling both hazard and exposure considerations. Examples of these include new chemical evaluations for commercialization, evaluations of existing chemicals for novel uses, and assessments of the adequacy of risk management provisions. Even well-validated tools can be inappropriately applied, with consequences as severe as misguided chemical management, compromised credibility of the tool and its developers and users, and squandered resources. This article describes seven discrete categories of tools based on their information content, function, and the type of outputs produced. It proposes a systematic framework to assist users in selecting hazard and risk assessment tools for given applications. This analysis illustrates the importance of careful selection of assessment tools to achieve responsible chemical assessment communication and sound risk management.     

Organisational safety climate and occupational accidents and injuries: an epidemiology-based systematic review

It is widely accepted among practitioners and researchers that a good safety climate results in improved safety. However, there is a lack of systematic and detailed reviews summarising and evaluating the scientific evidence underpinning the relationship between safety climate and injuries and accidents in a company. The current research addresses this gap and studies the association of safety climate with accidents and injuries at work. Nine databases were searched for quantitative studies. After eligibility and quality selection, 17 peer-reviewed papers were analysed. Quality assessment was developed applying the Strengthening the Reporting of Observational Studies (STROBE) guidelines, together with 9 appraisal criteria from Berra and colleagues (2008), Downs and Black (1998) and the appraisal tool from the University of Cardiff Weightman, Mann, Sander, & Turley, (2004). An evaluation summary statement was then constructed analysing the strength of the evidence provided by each study. Although 15 of the 17 studies included in this review provided full or partial support for the association of safety culture with accidents/injuries at work, scientific evidence is still unclear on the causal relationship between these two variables. Research is needed, especially longitudinal and intervention studies, to demonstrate in detail this association, which has been widely accepted in the area of occupational health and safety.     

Psychosocial factors and safety behaviour as predictors of accidental work injuries in farming

Farming is one of the most hazardous occupations in terms of the incidence and seriousness of accidental injuries. Research with other occupational groups has drawn attention to the role of psychosocial factors and stress. Such research needs to be extended to agriculture. Since stress may be a problem faced by farmers, there is a particular need to investigate the associations between farm accidents and work stressors and stress reactions. Using multivariate logistic regression analyses, this study aimed to uncover the best psychosocial predictors of injury, while controlling for exposure-related confounders. From a randomly selected sample of 794 farms, 10% of all farms in Ringkoebing County, Denmark, 393 farmers completed completed weekly accident registration over 12 months. The study sample consisted of 310 farmers who also completed questionnaires on psychosocial factors. Results indicated that farm stressors (including perceived economic problems), stress symptoms, and safety behaviour were predictors of occupational farm accidents. Higher levels of stressors and stress symptoms and poor safety behaviour were all associated with an elevated risk of injury. In the case of stress symptoms, the relation with accidents occurred via an interaction with safety behaviour. The combination of high levels of stress symptoms and poor safety behaviour was associated with a particularly high accident risk.     

Theory Development in Operations Management: Extending the Frontiers of a Mature Discipline via Qualitative Research

This invited paper discusses theory development in operations management. Many stellar researchers have made excellent contributions to theory development in our field. Operations management is a maturing discipline. Recently, theory driven empirical research has become common in top‐tier journals in our field. Impelled by this trend and due to the path dependency of research, in general, researchers have examined operations phenomena using theories from management and organizational science. How do we extend the frontiers of knowledge in our maturing discipline? How do we develop theories within the field of operations management? In examining some of the seminal ideas that have shaped our field, a common characteristic is that they relied on observational studies and conceptual reasoning. Is it time for us to stress the usefulness of qualitative research methods in our field? Could this lead to an intellectual renewal in our field and extend the frontier of a maturing discipline? This paper explores these questions and advances the notion that qualitative analysis needs to be emphasized more than it has been in recent past. This paper is meant to provoke discussion among empirical researchers in operations management.     

Psychosocial factors and safety behaviour as predictors of accidental work injuries in farming

Abstract

Farming is one of the most hazardous occupations in terms of the incidence and seriousness of accidental injuries. Research with other occupational groups has drawn attention to the role of psychosocial factors and stress. Such research needs to be extended to agriculture. Since stress may be a problem faced by farmers, there is a particular need to investigate the associations between farm accidents and work stressors and stress reactions. Using multivariate logistic regression analyses, this study aimed to uncover the best psychosocial predictors of injury, while controlling for exposure-related confounders. From a randomly selected sample of 794 farms, 10% of all farms in Ringkoebing County, Denmark, 393 farmers completed completed weekly accident registration over 12 months. The study sample consisted of 310 farmers who also completed questionnaires on psychosocial factors. Results indicated that farm stressors (including perceived economic problems), stress symptoms, and safety behaviour were predictors of occupational farm accidents. Higher levels of stressors and stress symptoms and poor safety behaviour were all associated with an elevated risk of injury. In the case of stress symptoms, the relation with accidents occurred via an interaction with safety behaviour. The combination of high levels of stress symptoms and poor safety behaviour was associated with a particularly high accident risk.     

Rail safety in Britain: An occupational health psychology perspective

As occupational health psychology matures, it will become involved in a more detailed way in areas ofspecific concern, and it will outgrow its recent over-dependence on a small number of very generalconcerns such as work stress and burnout. One example of all area of potential interest andopportunity is that afforded by rail safety. This paper discusses the position in Britain. It outlines thehistory and nature of safety management in the rail industry following privatisation in the 1990s. Itthen describes recent changes in safety thinking that could represent a mini-paradign shift and thatopen the door to the more active involvement of occupational health psychologists.     

Sources of stress in the national health services: A comparison of seven occupational groups

This paper reports a comparative study of sources of occupational stress affecting the seven major occupational groups within the National Health Service. The groups are compared on seven dependent variables. These are the six sub-categories of stressors identified by Cooper and Marshall (1978) and measured by the Occupational Stress Indicator (OSI) (Cooper et al. 1988), and a total stress score that is derived by summing scores for each of the six sub-categories. Occupational groups differed significantly (p.05) in only two of the six sub-categories. In these cases occupational groups not normally associated with front-line care reported higher levels of stress than either doctors or nurses. The results show that high levels of occupational stress are experienced by all occupational groups within the NHS and the subsequent discussion argues for a more progressive research policy that gives adequate attention to 'lower status' groups, such as ancillary, works and maintenance, and administrative and clerical.