Ergonomic evaluation of a wheelchair transportation securement system

The Americans with Disabilities Act (ADA) specifies guidelines covering the securement system and environment for wheeled mobility device (WhMD) passengers on the public bus system in the United States, referred to as the wheelchair tiedown and occupant restraint system (WTORS). The misuse or disuse of the WTORS system can be a source of injury for WhMD passengers riding the buses. The purpose of this study was to quantify the risks posed to the bus driver while performing the WTORS procedure using traditional ergonomic analysis methods. Four bus drivers completed the WTORS procedure for a representative passenger seated in three different WhMDs: manual wheelchair (MWC), scooter (SCTR), and power wheelchair (PWC). Potential work-related risks were identified using the four most applicable ergonomic assessment tools: PLIBEL, RULA, REBA, and iLMM. Task evaluation results revealed high levels of risk to be present to drivers during the WTORS procedure. The securement station space design and equipment layout were identified as contributing factors forcing drivers to adopt awkward postures while performing the WTORS task. These risk factors are known contributors to injury and the drivers could opt to improperly secure the passengers to avoid that risk.     

Cumulative Environmental Risk and Youth Problem Behavior

Using data from Wave 1 (n = 5,070) and Wave 2 (n = 4,404) of the National Longitudinal Study of Adolescent Health, we examined the relationship between cumulative risk exposure and youth problem behavior. Cross‐sectional analyses revealed a positive, linear association between cumulative risk and problem behaviors. The association between cumulative risk and externalizing problems was stronger for White youth than for Black youth. The association between cumulative risk and internalizing problems was stronger for girls than for boys, and stronger for White youth than for Black and Hispanic youth. Cumulative risk predicted change over time in internalizing problems. Findings support the theoretical notion that adolescents experience diminished psychological comfort when risk factors are present across several social domains.     

Visual ergonomics and computer work--is it all about computer glasses?

The Swedish Provisions on Work with Display Screen Equipment and the EU Directive on the minimum safety and health requirements for work with display screen equipment cover several important visual ergonomics aspects. But a review of cases and questions to the Swedish Work Environment Authority clearly shows that most attention is given to the demands for eyesight tests and special computer glasses. Other important visual ergonomics factors are at risk of being neglected. Today computers are used everywhere, both at work and at home. Computers can be laptops, PDA's, tablet computers, smart phones, etc. The demands on eyesight tests and computer glasses still apply but the visual demands and the visual ergonomics conditions are quite different compared to the use of a stationary computer. Based on this review, we raise the question if the demand on the employer to provide the employees with computer glasses is outdated.     

The Child Abuse Risk Evaluation Dutch Version (CARE-NL): A retrospective validation study

Abstract

The Child Abuse Risk Evaluation – Dutch version (CARE-NL) is a structured professional guideline for assessing the risk of all types of child abuse. The CARE-NL comprises 18 risk factors: eight Parental characteristics, three Parent-Child interaction factors, five Family factors, one Child vulnerability factor, and an extra factor for child sexual abuse risk. We examined interrater reliability and predictive accuracy of the instrument in a retrospective study at Advice and Reporting Centers on Child Abuse (ARCCA) in The Netherlands. The ARCCA files contained limited information on Parental risk factors, while parental characteristics, such as mental disorder and substance abuse, are the most important risk factors for (repeated) child abuse. On the other hand, the majority of the files included ample information on child and family characteristics. The CARE-NL could be reliably coded by trained raters and the predictive accuracy for out-of-home placement (AUC = .73) and placement of the child under court supervision (AUC = .78), at two years follow-up, was adequate. Use of the CARE-NL ensures that the assessment of the risk of child abuse focuses on the most important, empirically based risk factors in a structured and coherent way.     

Ergonomic risk assessment of nasogastric tube placement and implications for design and training

The placement of nasogastric (NG) tubes is known to be prone to error and may lead to serious issues for patient safety and wellbeing. In some instances these have been catastrophic and resulted in the death of the patient. This study sought to explore the potential risks associated with this procedure through the use of systematic prospective risk assessment. The research team used the Prospective Hazard Analysis (PHA) toolkit developed by Ward et al (2010) . The study has shown a wide number of risks that cover equipment design, work organisation, and training issues. The link between equipment design and training provides an important example of the need for a systematic approach to reducing errors and improving resilience in this aspect of healthcare.     

A multidimensional approach to the generation of helmets' design criteria: a preliminar study

The design and development process of helmets incorporates systematically design criteria related to safety to accomplish European and local standards for the commercialization. However, there are few studies focused on user's comfort and adaptation. Present study tackles a multidimensional approach to gain better understanding of the interaction between helmet and user to generate design criteria for the internal helmet surface. Morphological characteristics of the target population, pressure distribution over head and subjective perception of fitting and discomfort are the factors considered to establish the criteria that assure a proper fit. Ten men corresponding to helmet size M and usual drivers of motorbike wore two helmet models in three sizes (S, M and L). The head shape of participants was acquired using the head scanner of I-Ware laboratory and an instrumented pad was used to measure pressure in five head regions. After wearing the helmet, users filled in a perception questionnaire about fitting, comfort and usability considering the five regions. Users' fitting perception provided the relation between pressure levels and the comfort felt in the five regions. This study constitutes a first approach to a new methodology to generate criteria to improve the design of helmets under a multidimensional approach.     

Exploring functions of the lost seeking devices for people with dementia

This paper utilized a user-centered design approach as the foundation for technology in dementia care in order to improve the quality of telemedicine service. A status-quo analysis and questionnaire survey were conducted to explore the actual needs of the elders in using the lost seeking devices and the problems they encountered. In total, 37 caregivers for people with dementia were surveyed (20 female, 17 male, M = 50.08, SD = 15.47). The dementia-patients: 16 are male, 21 female (M = 72.75, SD = 10.23). Through analysis and induction, 3 problems were identified: poor information transmission, low user acceptance, individual material security anxiety. 2-4 improvement proposals are suggested for each problem. Most care-givers hope technological products would increase the efficiency and safety, but they also think it's too expensive and lack of computer skills. This result demonstrates the choice of seeking methods depends on the education level of the caregivers and most of them are elders. The concern of data leakage is also related to today's fraud issue, which may be the reason limiting the promotion of electronic products and biometrics. Further research is required, suggesting researchers should pursue improvements in lost seeking design devices in dementia for caregivers.     

Young urban adults' heterosexual risk encounters and perceived risk and safety: a structured diary study

Using diary methods, the current study explored characteristics of young adults' sexual risk interactions over a two-week period and the associations between perceived risk and safety with regard to these sexual risk behaviors. We screened all participants to ensure a moderate to high scores on an HIV knowledge measure. Men (n = 44) and women ( n = 48) enrolled at an inner-city college collected diary data, generating reports of 440 sexual occasions over a 2-week period (1,278 person-days). Despite participation in sexual risk activities, including highly inconsistent condom use during intercourse, participants uniformly reported high safety and little to no risk. Only women's perceptions of safety (not risk) were associated with condom use, men's perceptions of both safety and risk were unrelated. Ratings of safety and risk appeared to operate independently for the most part. Sex with new partners and new sexual activity were associated with both judgments of greater risk and lower safety were associated for men only. These results add to the growing evidence that young people fail to integrate fully their general knowledge regarding HIV risk into their personal interactions. This study has implications for the development of cognitive models around sexual decision-making for young adults at risk for HIV and may provide insight into the contextual features of sexual interactions associated with young people's perceptions of risk and safety.     

The contribution of ergonomics to risk analysis in the design process: the case of a future control room

The aim of this paper is to highlight how ergonomics contributes to risk analysis and risk management in a design project for a new reactor, the French EPR (European Pressurized Reactor). An iterative ergonomics design process has been conducted over the last 10 years through a Human Factors Engineering program at the French energy company EDF. A parallel has been drawn between a risk management process and this ergonomics process based on International Organization for Standardization (ISO) publications such as ISO/IEC Guide 73, ISO Guide 51, etc. The contribution of ergonomics to risk analysis is illustrated by an example: the automatic diagnosis, which is a very important technical device for safety. Five main types of risk have been identified via ergonomic analyses during the different design stages. Counter-measures have been implemented and their efficacy tested within the scope of new campaigns to assess human factors. However, the management of risks in such a design project requires the participation both of the different design entities involved in the project and of other experts in aspects of risk management, such as human reliability. The organization of collaborative participation remains a challenge to be addressed.     

Employee exposure to coworker substance use and negative consequences: the moderating effects of work group membership.

The current study assesses: (1) whether the relationship between individual exposure to coworker substance use and negative consequences resulting from exposure depends on work group membership, and (2) whether group-level characteristics moderate the relationship between exposure and consequences. At the group-level, we assessed occupations involving safety risk or high mobility and social factors of drinking climate and group cohesiveness. We conducted Hierarchical Linear Modeling (HLM) across two samples of municipal employees (ns = 650, 878; n of groups = 50, 49). Our results revealed that groups with higher proportions of jobs involving risk (e.g., machine work) and, to a lesser extent, groups with a higher level of drinking climate were those most vulnerable to consequences under conditions of exposure. Importantly, our findings controlled for individual risk factors (e.g., personal drinking, job stress). Our discussion examines the implications of this study for theory and policy related to workplace substance abuse.     

Demographic Characteristics

This article aims to describe the characteristics of and design elements in gardens/patios at 87 residential living homes for older people and to describe and compare residents’ and staff members’ perceptions of outdoor spaces. The aim was also to investigate factors related to residents' satisfaction with and stays in the garden/patio. The result showed that many gardens/patios had several recommended design elements and, at the same time, obvious deficiencies. The residents (n = 415) valued various aspects of the garden/patio more highly than did the staff (n = 667). Managers responsible for residential living homes for elderly people should take measures to ameliorate deficiencies and deficient elements in design and accessibility that are lacking so that the garden/patio can be used as an important health promotion resource in the care of elderly people. Residents and staff are important actors in such development work.     

Risk perception of food safety issue on social media

This study aims to investigate individuals’ risk perceptions of food safety by extending the heuristic and systematic information processing model (HSM) to the social media context. Specifically, we examine the predictors of risk perceptions of food safety, including social media attention, social media credibility, as well as systematic and heuristic processing. A convenient sample of 640 adults was collected in China. Structural equation modeling was used to test the effects of social media attention and social media credibility on public risk perceptions of food safety, with information processing as mediating factors. The findings indicated that social media attention and social media credibility motivate systematic processing, which in turn promote risk perception of food safety. However, the mediating effect of heuristic processing was not found. Implications for theory and practice were discussed.     

PERSONALITY,INFORMATION ACQUISITION,AND CHOICE UNDER UNCERTAINTY: AN EXPERIMENTAL STUDY

This article studies the role of personality in choice under risk and uncertainty. We explore the hypothesis that personality plays a role in decision making in situations of uncertainty but not in situations of risk. In addition to offering support for this main hypothesis, we explore the various pathways through which personality exerts its influence. What we find is that in uncertain environments, where decision makers are able to acquire information about the unknown probability distributions they face, personality variables influence the type of information people acquire, which then influences their choice. Our experimental design brings in two novel aspects of choice under uncertainty: information acquisition and advice. The findings indicate that indeed, under uncertainty, personality matters for choice in a way it does not under risk. Furthermore, the results suggest that personality can play a role at multiple levels, such as people's preferences for certain types of information and the likelihood of following advice. (JEL C90, D03, D81)     

Self-Protection and Averting Behavior,Values of Statistical Lives,and Benefit Cost Analysis of Environmental Policy

Situations in which risk is at least partly a matter of choice provide opportunities to analyze behavior and estimate the willingness to pay for small changes in mortality risks. Individuals engage in household production of health and safety as long as the value of the gain in risk reduction is worth the money, time, and any disutility necessary to produce the reduction in risk. This paper reviews values of statistical life inferred from choices about highway speeds, traveler use of protective equipment, crashworthiness of motor vehicles, and housing location near Superfund sites. The best estimates, close to $4 million in year 2000 dollars, are valuable complements to estimates from labor and constructed markets. Interestingly some evidence suggests that values for children and seniors are not less than middle-aged adults. Issues of risk perception and other challenges related to estimation are discussed.     

A qualitative investigation of risk and protective factors for interpersonal violence in adults on the autism spectrum

Abstract

Individuals on the autism spectrum are at an increased risk of experiencing violence. This study sought to understand the opinions of adults on the spectrum regarding potential risk and protective factors for interpersonal violence. Twenty-two adults (12 men; 18 to 53 years of age) participated in semi-structured qualitative interviews. Interviews were recorded, transcribed, and analysed. The results of the qualitative analysis identified individual and contextual risk and protective factors. Protective themes focused on individual needs (awareness of the self and the environment, interpersonal knowledge/skills, skill building strategies) and supportive contexts (benefits of a trusted person, advocates, fostering acceptance and inclusion). There is a need for strategies to decrease the vulnerability to, and the impact of, interpersonal violence. Individuals on the spectrum have the capacity to provide important information regarding safety promotion and risk factors for interpersonal violence, and their expertise should play a role in guiding efforts that promote safety.     

Homelessness and Substance Abuse: Which Comes First?

Abstract

The present paper uses a social selection and social adaptation framework to investigate whether problematic substance use normally precedes or follows homelessness. Clarifying temporal order is important for policy and program design. The paper uses information from a large dataset (n=4,291) gathered at two services in Melbourne, supplemented by 65 indepth interviews. We found that 43% of the sample had substance abuse problems. Of these people, one-third had substance abuse problems before they became homeless and two-thirds developed these problems after they became homeless. We also found that young people were more at risk of developing substance abuse problems after becoming homeless than older people and that most people with substance abuse issues remain homeless for 12 months or longer. The paper concludes with three policy recommendations.     

Risk factors for femicide-suicide in abusive relationships: results from a multisite case control study

The killing of women by men who then take their own lives (femicide-suicide) is the most common form of homicide-suicide. This study identified femicide-suicide risk factors in an 11-city case-control study of femicide in the United States. Perpetrator, victim, relationship, and incident characteristics were analyzed for femicide-suicide cases (n = 67) and controls (n = 356, women living in the community with nonfatal physical abuse) using logistic regression modeling. Two risk factors emerged that were unique to femicide-suicides cases compared to overall femicide risk analyses: prior perpetrator suicide threats and victims having ever been married to the perpetrator.     

When in Rome: conformity and the provision of public goods

We ask whether conformity, copying the most observed behavior in a population, affects free riding. Our model suggests that, if sufficiently frequent at the start of a public goods game, conformity will increase the growth rate of free riding. We confirm this prediction in an experiment by showing that free riding grows faster when players have the information necessary to conform. As a stricter test, we econometrically estimate the dynamic on which the model is based and find that, controlling for the payoff incentive to free ride, players react significantly to the number of free riders in their groups.