Effect of cycle to cycle task variations in mixed-model assembly lines on workers’ upper body and lower back exertions and recovery time: A simulated assembly study

Differences in cycle-to-cycle work content in mixed-model assembly lines (MMAL) may increase exposure to risk factors of work-related musculoskeletal disorders (WMSD). This study investigated the effect of conveyor type and product mix/sequence in MMALs on joint loads and recovery time. An assembly task was simulated using 9 conveyor (continuous moving, synchronous indexing, and asynchronous indexing) and product mix/sequence (single product, 3 products with fixed sequence, and 3 products with random sequence) configurations. Results show the self-paced conveyor resulted in the least frequency of reaching. However, subjects did not use the available time for recovery and worked at a faster pace than in the continuous and synchronous indexing conveyors. In conclusion, an asynchronous indexing conveyor provided workers the flexibility they needed to complete their job correctly without reaching but recovery time was not sufficient.Practitioner summaryCycle-to-cycle task variations in MMAL may increase workers’ risk of developing WMSDs. An asynchronous indexing conveyor, with a minimum work time built in, may allow workers to complete their job with less reaching outside the reach envelope while providing sufficient recovery time.     

Effects of breaks on regaining vitality at work: An empirical comparison of ‘conventional’ and ‘smart phone’ breaks

Recently, the popularity of smart phones has brought about changes in how people work and take breaks. This paper focuses on whether taking a break with a smart phones (e.g., browsing the internet or using social network services) has a different association with regaining vitality after ‘conventional breaks’ (e.g., walking or chatting face to face with friends). We surveyed a total of 450 workers in Korea with a diary questionnaire to see if there were differences in the effects of breaks via two theoretical paths of association: positively in terms of vigor and negatively in terms of emotional exhaustion. Empirical results show that psychological detachments by breaks, independent of break modes, did increase vigor and reduce emotional exhaustion, consistent with the existing literature. However, we also found that the effects, particularly in reducing emotional exhaustion, were significantly lower for the smart phone break group versus the conventional group. We discuss some theoretical and practical implications of these findings.     

Research and Development on Manufacturing Enterprise Integration Framework

Currently many enterprises have established some independent application systems such as CAD, CAPP, CAE and so on. Enterprise information integration makes these information islands connected, and thereby forms a uniform enterprise-wide information environment. First this paper discusses the main research contents of enterprise integration. Then the author introduces an Internet-based configurable and open information integration framework, and presents a multi-tier integration architecture based on reusable component. Finally a development case of enterprise integration framework is introduced.     

The impact of shiftwork on work – home conflict,job attitudes and health

The present study was designed to test the impact of rotation and timing of shifts on work?–?home conflict, job attitudes, health and absenteeism among the military police. A total of 3122 employees participated in the study. Discriminant analysis was used to examine the relationships between rotation and timing of shifts on the one hand, and the outcome measures on the other. Whether employees had fixed dayshifts, fixed non-day shifts including weekends, or rotating shifts with or without weekends, could be predicted on the basis of the experienced work?–?home conflict, job attitudes, health and absenteeism. Each of the two parameters of shiftwork differentially affected the experience of the outcome measures. Rotation was most clearly related to unfavourable job attitudes (namely job satisfaction, cynicism, turnover intentions and professional efficacy), whereas timing was most clearly related to increased work?–?home conflict. The results suggest that fixed non-day shifts including weekends (i.e., during highly valuable times) should be avoided in order to minimize the conflict between work and home and that rotation rosters should be designed with a high degree of individualization and flexibility. These seem to be the most promising ways to reduce the negative consequences of shiftwork for employees, their families and organizations.     

Automating and informating: roles to examine technology’s impact on performance

Previous studies on the impact of technology on performance (usefulness) have looked at the Information System (IS) in its role as supplier of information (informating role) and thus they have studied the influence of information quality and system quality on usefulness. However, an IS also has a role in the automation of tasks (automating role), which these studies do not take into account. Accordingly, this paper proposes a factor model that (1) includes explicitly both roles; (2) considers that informating and automating roles mediate the relation between these technological factors (information quality and system quality) and usefulness and (3) includes a system’s level of intervention (i.e. the degree to which technology participates in carrying out the tasks) as an additional factor that determines usefulness. Using a questionnaire, data were gathered on 229 Enterprise Resource Planning system users from different organisations and functional areas and structural equations model was used for analysis. Results show that information quality explains usefulness through both roles. System’s level of intervention explains usefulness through the automating role and system quality explains usefulness through the informating role. The factors’ differentiated effects through each role may help managers to establish more effective criteria and priorities in the various stages of an IS’s life cycle.     

Cyberloafing in the workplace: mitigation tactics and their impact on individuals’ behavior

With the Internet permeating every aspect of daily life, organizations of all types are increasingly concerned about the degree to which their employees are cyberloafing by shirking their work responsibilities to surf the Internet, check e-mail, or send text messages. Although technological interventions against cyberloafing have been shown to be effective, they might be perceived by employees as an invasion to their privacy, and are expected to have repercussions on employee behavior and loyalty. The main objectives of this study are to (1) examine how the introduction of such technological interventions might affect employees’ emotions and fairness perceptions, and (2) understand the effect of the interventions on behavioral outcomes, i.e., employees’ intentions to cyberloaf and their loyalty to the company. We developed a justice-based framework that we empirically test using a field experiment composed of field surveys complemented with hypothetical scenarios describing new organizational initiatives to curb employees’ cyberloafing. Our findings suggest that technological interventions, although associated with perceptions of unfairness, are effective at controlling cyberloafing, albeit at the expense of employee loyalty. On the other hand, contrary to prior findings, we find that fairness perceptions of technological interventions, although reinforcing employee loyalty, are ineffective at curbing cyberloafing. These findings are especially enlightening in that they contradict a common belief that perceived fairness encourages employees, as a sign of their appreciation for this fairness, to curb their misuse of IT. The findings also help managers fine-tune their cyberloafing policies to achieve a long-lasting remedy to their employees’ cyberloafing while maintaining a necessary level of employee loyalty.     

Absorbed in technology but digitally overloaded: Interplay effects on gig workers’ burnout and creativity

Technology has facilitated platform-mediated work, and individuals are often encouraged to engage with technology using various digital solutions. However, for platform workers, the use of technology can lead to digital overload, which may negatively impact their burnout and performance. In this paper, we examine the interplay between individuals’ cognitive absorption in technology and technology overload in predicting gig workers’ creative output. Using empirical data from 263 Amazon Mechanical Turk platform workers, we show that cognitive absorption positively predicts gig workers’ creativity. However, moderated-mediation analysis shows that in the case of high technology overload, cognitive absorption with technology leads to burnout and reduces creativity levels of the workers     

Understanding community health workers’ intentions to participate in mHealth studies within developing countries

In relation to mobile health (mHealth) initiatives, early engagement by potential end users has been established to have a positive impact both in the medium- to long-term adoption of the solution. However, there remains a paucity of research which focuses on participant recruitment for mHealth initiatives in developing countries. The objective of this paper, therefore, is to examine community health workers’ (CHWs’) intentions to participate in a mHealth pilot study in Malawi, Africa. A conceptual model with three characteristics is derived from the existing literature which may influence a CHW’s intentions: namely, (1) participant, (2) pilot study, and (3) social and contextual characteristics. A paper-based survey of CHWs was employed to examine the model, analysed using the partial least squares method of structural equation modelling. This study reveals that participant and pilot study characteristics primarily influence the decision-making process of CHWs when considering their participation in pilot studies. Health policy-makers and professionals should focus on reducing uncertainty by promoting the importance of the study at individual and societal levels and ensuring that potential end users are competent interacting and using mHealth.     

Selecting lighting system based on workers’ cognitive performance using fuzzy best–worst method and QUALIFLEX

Cognition, Technology & Work - The present study aimed to evaluate different illumination systems in the control room of a power plant and decide on the optimal illumination system in terms of...     

The impact of technology on older adults’ social isolation

Research indicates that social isolation and loneliness have a negative effect on health and wellbeing among older people. Various technology-based interventions have been offered to reduce social isolation; however, research demonstrating the role of various types of technologies and their effectiveness in dealing with social isolation among seniors is scarce. This study undertakes a systematic literature review of empirical studies on various types of technologies and their effectiveness in alleviating social isolation among seniors. Relevant electronic databases were searched and through 6886 initial set of studies published from 2000 to 2015 we have found eight different technologies that have been applied to alleviate social isolation, namely, general ICT, video game, robotics, personal reminder information and social management system, asynchronous peer support chat room, social network sites, Telecare and 3D virtual environment. We further evaluated the effectiveness of the technologies with social isolation among seniors. Findings show that technologies can be used to reduce social isolation among seniors. However, more studies are needed to evaluate the effectiveness of new technologies.     

Digital technologies and artificial intelligence’s present and foreseeable impact on lawyering,judging, policing and law enforcement

‘AI & Law’ research has been around since the 1970s, even though with shifting emphasis. This is an overview of the contributions of digital technologies, both artificial intelligence and non-AI smart tools, to both the legal professions and the police. For example, we briefly consider text mining and case-automated summarization, tools supporting argumentation, tools concerning sentencing based on the technique of case-based reasoning, the role of abductive reasoning, research into applying AI to legal evidence, tools for fighting crime and tools for identification.     

The effect of Facebook use on office workers’ job performance and the moderating effects of task equivocality and interdependence

As office workers’ use of social networking sites (SNSs) has increased, so has research interest in the effect of SNS use on job performance. The present study employs data collected from South Korean office workers to examine how the use of the SNS Facebook affects job performance and to investigate the moderating effects of task characteristics (task equivocality and task interdependence). The results show that Facebook use for work has a positive effect on job performance, although the time spent on Facebook use does not have a significant effect on job performance. Moreover, task interdependence is associated with a decrease in the effect of Facebook use for work on job performance. In other words, task interdependence has a negative moderating effect on the impact of Facebook use for work on job performance. The reason is that Facebook is particularly advantageous for enhancing performance in tasks where the level of interdependence is low because it is a medium with relatively low synchrony and is unsuitable for one-to-one relationship building. This study has implications for companies that are concerned about formulating policies related to employees’ use of SNSs.     

Evaluating the impact of smart technologies on harbor’s logistics via BPMN modeling and simulation

A smart Information and Communication Technology (ICT) enables a synchronized interplay of different key factors, aligning infrastructures, consumers, and governmental policy-making needs. In the harbor’s logistics context, smart ICT has been driving a multi-year wave of growth. Although there is a standalone value in the technological innovation of a task, the impact of a new smart technology is unknown without quantitative analysis methods on the end-to-end process. In this paper, we first present a review of the smart ICT for marine container terminals, and then we propose to evaluate the impact of such smart ICT via business process model and notation (BPMN) modeling and simulation. The proposed approach is discussed in a real-world modeling and simulation analysis, made on a pilot terminal of the Port of Leghorn (Italy).     

The impact of personality traits and professional experience on police officers’ shooting performance under pressure

We explored the impact of professional experience and personality on police officers’ shooting performance under pressure. We recruited: (1) regular officers, (2) officers wanting to join a specialised arrest unit (AU) (expected to possess more stress-resistant traits; pre-AU) and (3) officers from this unit (expected to also possess more professional experience; AU) (all male). In Phase 1, we determined personality traits and experience. In Phase 2, state anxiety, shot accuracy, decision-making (shoot/don’t shoot), movement speed and gaze behaviour were measured while officers performed a shooting test under low and high pressure. Results indicate minimal differences in personality among groups and superior performance of AU officers. Regression analyses showed that state anxiety and shooting performance under high pressure were first predicted by AU experience and second by certain personality traits. Results suggest that although personality traits attenuate the impact of high pressure, it is relevant experience that secures effective performance under pressure.

Practitioner Summary: To obtain information for police selection and training purposes, we let officers who differed in personality and experience execute a shooting test under low and high pressure. Outcomes indicate that experience affected anxiety and performance most strongly, while personality traits of thrill- and adventure-seeking and self-control also had an effect.     

The impact of alerting designs on air traffic controller’s eye movement patterns and situation awareness

Abstract

This research investigated controller’ situation awareness by comparing COOPANS’s acoustic alerts with newly designed semantic alerts. The results demonstrate that ATCOs’ visual scan patterns had significant differences between acoustic and semantic designs. ATCOs established different eye movement patterns on fixations number, fixation duration and saccade velocity. Effective decision support systems require human-centered design with effective stimuli to direct ATCO’s attention to critical events. It is necessary to provide ATCOs with specific alerting information to reflect the nature of the critical situation in order to minimise the side effects of startle and inattentional deafness. Consequently, the design of a semantic alert can significantly reduce ATCOs’ response time, therefore providing valuable extra time in a time-limited situation to formulate and execute resolution strategies in critical air safety events. The findings of this research indicate that the context-specified design of semantic alerts could improve ATCO’s situational awareness and significantly reduce response time in the event of Short Term Conflict Alert (STCA) activation which alerts to two aircraft having less than the required lateral or vertical separation.

Practitioner Summary: Eye movements are closely linked with visual attention and can be analysed to explore shifting attention whilst performing monitoring tasks. This research has found that context-specific designed semantic alerts facilitated improved ATCO cognitive processing by integrating visual and auditory resources. Semantic designs have been demonstrated to be superior to acoustic design by directing the operator’s attention more quickly to critical situations.Abbreviations: APW: area proximity warning; ASRS: aviation safety reporting system; ATC: air traffic control; ATCO: air traffic controller; ATM: air traffic management; COOPANS: cooperation between air navigation service providers; HCI: human-computer interaction; IAA: irish aviation authority; MSAW: minimum safe altitude warning; MTCD: medium-term conflict detection; SA: situation awareness; STCA: short term conflict alert; TP: trajectory prediction     

Effectiveness of VR-based training on improving construction workers’ knowledge,skills, and safety behavior in robotic teleoperation

The emergence of construction robotics and automation has produced an urgent and vast need for construction workers to reskill and upskill for the future of work. Virtual Reality (VR)-based training has been considered and investigated as a safe and cost-effective training method that allows workers to be exposed to hazardous tasks with negligible actual safety risks in comparison to existing training methods (hands-on, lecture-based, apprenticeship training). This paper aims to investigate the impact of VR-based training on construction workers’ knowledge acquisition, operational skills, and safety behavior during robotic teleoperation compared to the traditional in-person training method. Fifty construction workers were randomly assigned to complete either VR-based or in-person training for operating a demolition robot. We used quantitative and qualitative data analyses to answer our research questions. Our results indicate that VR-based training was associated with a significant increase in knowledge, operational skills, and safety behavior compared to in-person training. Our findings suggest that VR-based training not only provides a viable and effective option for future training programs but a valuable option for construction robotics safety and skill training.     

The effect of hand tools’ handle shape on upper extremity comfort and postural discomfort among hand-woven shoemaking workers

Hand tools are widely used in a large number of occupations. Many workers have to use hand tools to accomplish their duties. This may cause work-related Upper Extremities Musculoskeletal Disorders (UEMSDs). The present study was conducted in Iranian hand-woven shoe industry to (a) investigate the design of hand tools currently used in hand-woven shoemaking operation and (b) design/redesign the tools' handles based on anthropometric tables and ergonomic principles. Based on Iranian workers' anthropometric tables, new handles with different shapes were designed and made for hand tools currently used in hand-woven shoemaking operation (e.g., awl and cloth cutting tool). Hand postures and postural comfort and discomfort were investigated via rating technique using Comfort Questionnaire for Hand Tools (CQH) and upper extremities body map. The results of CQH showed that the handle shape had a significant influence on the hand posture and perceived postural discomfort in the upper extremities. The new ergonomically designed handles were perceived to be more comfortable compared to the traditional ones. Additionally, the new handles improved the hand posture during the operation and reduced the severity of discomfort in the upper extremities compared to the tools with conventional handles. The findings of this study revealed that designing the hand tools’ handles based on ergonomic principles and using anthropometric tables could improve the hand posture, increase comfort, and decrease discomfort in the upper extremities. By this means, reduction in work-related UEMSDs is expected.     

The longitudinal impact of enterprise system users’ pre-adoption expectations and organizational support on post-adoption proficient usage

Although enterprise systems (ES) are ubiquitous, many firms report less than stellar payoffs from these costly investments, with underutilization often attributed to failures in the implementation process. Unfortunately, research has not provided sufficient insights into these failures, in part because it has focused on actual usage, as opposed to proficient usage, as the benchmark for successful implementation. Moreover, research has not generally examined how the adoption process unfolds over time, thus overlooking potential underlying mechanisms that may help explain how adopters achieve proficiency. To begin addressing these shortcomings, we study how adopters’ pre-adoption expectations, enacted over time, can influence their post-adoption proficiency, by shaping how and why they spend time using the system during the adoption period. We analyzed time-lagged survey data from 153 financial analysts, required to adopt new ES-based software, at a multinational bank. We found that adopters who hold pre-adoption expectations reflecting greater internal and external motives to adopt the system as well as systematically integrate it into their work routines are more apt to use the system in ways that enhance their cumulative knowledge of it, and subsequently develop higher levels of proficiency post-adoption. Moreover, greater organizational support enhanced the impact of adopters’ expectations on proficiency, except when their actual use is low in which case organizational support had an adverse effect.     

Networked Product＇s Cooperative Design and Manufacturing Based on Top Basic Skeleton Model

This paper discusses the top-down design flow. An ifinovative theory and method, Top Basic Skeleton （TBS） model, is put forward, which supports cooperative design. The principle, the function of the TBS and its application are detailedly explicated on the cooperative design by the design examples.