Journal Sciences News
Cirugia Espanola (English Edition)
September 2018
Plethysmographic and anthropometric validation of a 3D body image digitizer to determine body dimensions
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Arnulfo Ramos-Jim
September 2018
Leg/foot movement times with lateral constraints
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Alan H.S. Chan, Errol R. Hoffmann, K.M. Ip, Samuel C.H. Siu Much is known about leg/foot movement times when there is a single target constraint - that in the direction of the movement. We report two experiments that investigated the effects of an additional constraint that was perpendicular to the direction of the movement. In Experiment 1, a standard Fitts' task was used but with targets that varied in height and, in Experiment 2, we used the Drury tracking task of moving between lines of varying track widths. Results were different to those of arm/hand movements. In experiment 1 the effects of the Indexes of Difficulty (ID) in the direction of, and perpendicular to, the movement direction, were linearly additive. This is compared to the ‘greater ID model’ that gives a good description of arm movements. When tracking between parallel lines, foot performance is poor compared to arm performance when error rates are controlled. The Drury model well describes data for arm and foot movements, when the error rates are controlled, but initial error rates increase rapidly with decrease of target width and hence the leg/foot system has difficulty in control at higher values of amplitude to track width ratio. Relevance to industry The foot is commonly used for controlling a device. This research demonstrates the effect of having limited width of a target perpendicular to the direction of movement of the foot/leg. Performance is compared to that of the hand/arm system.
September 2018
A longitudinal study of noise exposure and its effects on the hearing of olive oil mill workers
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Juan Carlos Rubio-Romero, Jes
September 2018
Evaluation of protective footwear fit for older workers (60+): A case study using 3D scanning technique
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Emilia Irzma
September 2018
Biomechanical exposure of industrial workers – Influence of automation process
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Francisco Locks, Gert-
September 2018
Understanding musculoskeletal disorders among Iranian apple harvesting laborers: Ergonomic and stop watch time studies
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Ehsan Houshyar, In-Ju Kim Background Musculoskeletal disorders (MSDs) are usually caused by bad working postures and habits. There is a great demand to correctly estimate laborers' work-related musculoskeletal disorders (WMSDs) during physically intensive works. This study aimed to suggest a practical solution with ergonomic principles and time studies on the reduction of WMSDs for the apple harvesting laborers in Sepidan gardens at the Fars Province, Islamic Republic of Iran (Iran). Methods Prevalence of MSDs was evaluated by the Nordic Standard Questionnaire surveys and the laborers’ workload was assessed by the rapid entire body assessment postural analysis tool. A stop watch time study method was employed to estimate rest time allowances. Data from the time study was also recorded by a questionnaire validated from a panel of experts. Thirty laborers from two age groups: a young (20–35 years of old) and old (36–55 years old) were sampled from 10 gardens. Results The stop watch time study revealed that the frequencies of apple harvesting works were 95 vs. 119 times for the old group and young one, respectively. The prevalent disorders were related to specific body regions such as the lumber, knee, neck and shoulder areas. The percentages of disorders were significantly reduced when ergonomically corrected postures were applied with suitable rest time allowances. Conclusion Fruit harvesting works may need to improve their work-rest time intervals to prevent WMSD developments and productivities with time managements. With a correct estimation of the desired number of laborers, apple harvesting jobs can be performed on time, and by implementing appropriate ergonomic postures, occupational health and safety problems can be lessened in the apple harvesting workers.
September 2018
Leg and back muscle activity, heart rate, performance and comfort during sitting, standing, and using a sit-stand-support with different seat angles
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Corinne Nicoletti, Thomas L
September 2018
Practical application of safety climate: A case study in the Taiwanese steel industry
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Yu-Ling Chen, Kang-Hung Liu, Chien-Chi Chang The purpose of this study was to test the applicability of a Chinese version of a questionnaire designed for measuring safety climate and to connect scores with occupational accidents, using the steel industry in Taiwan as exemplar. The study used safety climate as a lagging indicator of accident records from a period of three years prior to measurement of safety climate and to investigate when the measurement expired. Results showed that group-level safety climate provides a good lagging indicator of occupational accidents. Also, the data revealed meaningful variation between different departments in a single company. This information could be applied to improve workplace safety in an efficient manner and protect employees from occupational hazards. When considering the best period of time over which to measure safety climate, results suggested one year was preferable to a longer time period.
September 2018
Effects of backpack load on stair gait in young male adults
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Xingyu Chen, Xingda Qu Backpack load has been found to be a potential risk factor for accidental falls during level walking. Stairs are considered one of the most hazardous locations in occupational settings, and falls often occur on stairs. However, how backpack load affects stair gait in young adults was still unknown. The objective of the present study was to reveal the effects of backpack load on stair gait in young male adults. Thirty male adults participated, and completed three ascent and three descent trials in the no load, low load, and high load conditions, respectively. Four categories of dependent measures were used to characterise stair gait, including lower limb and trunk kinematics, foot clearance measures, spatial-temporal gait parameters, and postural stability measures. We found that participants adjusted their postural control to compensate for the disturbance caused by backpack load and maintain their postural stability as in the no load condition. However, loaded participants may encounter increased risk of stair contact during ascent and increased risk of over-stepping during descent when passing over a step. These findings support that backpack load could be a risk factor for stair falls and imply that loaded people should pay more attention to the step when passing over it. Relevance to industry Findings from this study could aid in developing instructions for safe stair negotiation in occupational settings.
July 2018
Application of ANP to the selection of shipping registry: The case of Taiwanese maritime industry
Publication date: September 2018
Source:International Journal of Industrial Ergonomics, Volume 67 Author(s): Chien-chang Chou The maritime industry plays an important role in the economic growth of a country. In recent decades, Taiwan has faced the critical problem of flagging-out. For the future development of its maritime industry, Taiwan needs to understand the decision-making procedures of registry selection by shipowners, and offer the right policies for improving the attractiveness of the Taiwanese shipping registry. The purpose of this study is to structure a multiple-criteria decision-making (MCDM) analysis hierarchy for shipping registry selection by shipowners. The Analytic Network Process (ANP) methodology is utilized to find out the influencing factors in the decision-making procedure of registry selection. After structuring the fundamental hierarchy, the ANP model is applied to the shipping registry of Taiwan. The results show that operating costs are the most important factor, followed by market conditions, national policies and laws, and international laws and restrictions. Taxation of shipping, finance conditions, trade restrictions and barriers, crew costs, and incentives are the five most important sub-criteria. The flag of convenience (FOC) is the best choice as a shipping registry system, followed by the second ship register. The national flag is shipowners’ last choice. In addition, to illustrate the feedback relationship in the ANP structure, the paper also presents the ranking of important sub-criteria under various shipping registry choices.
July 2018
Lifting activity assessment using surface electromyographic features and neural networks
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Tiwana Varrecchia, Cristiano De Marchis, Martina Rinaldi, Francesco Draicchio, Mariano Serrao, Maurizio Schmid, Silvia Conforto, Alberto Ranavolo The surface electromyographic (sEMG) data of 12 trunk muscles of 10 workers during the execution of lifting tasks using three lifting indices (LI) were recorded. The aims of this work were to: 1) identify the most sensitive trunk muscles with respect to changes in lifting conditions based on the selected sEMG features and 2) test whether machine-learning techniques (artificial neural networks) used for mapping time and frequency sEMG features on LI levels can improve the biomechanical risk assessment. The results show that the erector spinae longissimus is the trunk muscle for which every sEMG feature can significantly discriminate each pair of LI. Furthermore, only when using multi-domain features (time and frequency) a more complex artificial neural network can lead to an improved biomechanical risk classification related to lifting tasks.

Graphical abstract

image
July 2018
Impact of military type footwear and workload on heel contact dynamics during slip events
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Harish Chander, Adam C. Knight, John C. Garner, Chip Wade, Daniel W. Carruth, Hunter DeBusk, Christopher M. Hill Introduction Slips, trips and falls due to an induced loss balance have been identified as the leading cause of occupational injuries. This study aimed to analyze the impact of two military boots, standard boot (STD) and minimalist boot (MIN) on slip events, before (PRE) and after (POST) a military type load carrying task. Methods Sixteen male participants (age: 27
July 2018
Evaluation of 3D printing approach for manual assembly training
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Abdulrahman Al-Ahmari, Wadea Ameen, Mustufa Haider Abidi, Syed Hammad Mian Assembly is an important aspect of the manufacturing process. Proper assembly training plays a vital role for efficient operations. Therefore, this paper suggests a new assembly training approach based on 3D printing technology. The proposed approach is compared to existing assembly training methods including conventional drawing (CD) and virtual reality (VR). Different size scales of product are considered to evaluate and validate the suggested 3D printing approach. The training performance is evaluated based on completion time of assembly task, number of assembly errors, number of frustration points during the task, and completion percentage. The experiments have been conducted on 25 participants using the three assembly training approaches. The obtained results show that the 3D model performed better than the other two conventional methods. The results also illustrate that there is no significant effect from the 3D model scale variation on the assembly training performance.
July 2018
Exploring head and neck vibration exposure from quad bike use in agriculture
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Aaron M. Kociolek, Angelica E. Lang, Catherine M. Trask, Radivoj M. Vasiljev, Stephan Milosavljevic Objectives Although musculoskeletal disorders of the low back have been linked to excessive whole body vibration during vehicle use, there is a need to explore head/neck vibration in occupational environments. Resonant frequencies may amplify vibration transmitted to the head/neck and increase risk of musculoskeletal disorders. Methods An observational fieldwork study directly measuring vibration exposure at the seat and head of 10 rural workers operating quad bikes over farm terrain for
July 2018
Psychometric properties of the Survey of Shiftworkers (SOS) in a sample of Iranian nurses
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Tayebe Rahimi Pordanjani, Ali Mohamadzade Ebrahimi Due to the rapid growth of technology, shiftwork has become an integral part of most workplace activities. The purpose of this study was to examine the psychometric properties of the Persian translation of the Survey of Shiftworkers (SOS). In this descriptive cross-sectional study, the population consisted of all nurses employed by three teaching hospitals in Bojnord, Iran in 2017 (n
July 2018
Change detection support for supervisory controllers of highly automated systems: Effects on performance, mental workload, and recovery of situation awareness following interruptions
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Rick van der Kleij, Tom Hueting, Jan Maarten Schraagen Dynamic Positioning (DP) is a computer-controlled process to automatically keep a floating vessel at a specific position or to follow a pre-defined path (tracking) by using its own propellers and thrusters. The human supervisory controller has no direct need to constantly know what the status is of all parts of the automation and the system it is controlling, because the highly automated DPS is controlling all components itself. Only after a failure arises, the operator needs to take over manual control and take appropriate action(s) to prevent the failure from harming the operation. As the supervisory controller may be out of the loop, swiftly taking over control may be problematic when failures arise. The purpose of the current study was to investigate whether automation of change detection enables human operators with low awareness of the automation and the system it is controlling to quickly recover awareness in emergency take-over situations. A 2 by 2 within subjects experiment was conducted using a DP simulation (n
July 2018
Ergonomic and psychosocial factors and musculoskeletal complaints in public sector administration – A joint monitoring approach with analysis of association
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): T
July 2018
Can cutaneous vibration affect pain development? Testing the efficacy of a vibrating belt applied intermittently to the low back region during prolonged standing
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Analyssa Cardenas, Diane E. Gregory Standing-induced low back pain (LBP) is becoming more common in the workplace and has been shown to develop in periods of as short as 2
July 2018
Long-term retention of skills in multi-day training contexts: A review of the literature
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Elizabeth A. Sanli, Heather Carnahan Multi-day training courses, designed to prepare groups of people to respond should a critical situation arise, include a range of knowledge and skill competencies. Due to infrequent requirements to perform these skills outside of training, and the importance of correct execution in critical situations, understanding the retention, and forgetting of such skills is an important consideration for industry. In an effort to determine the optimal training contexts and optimal retraining period for skills included in multi-day training course, a review of the literature in healthcare, military, and marine and offshore safety and survival contexts provides a body of knowledge regarding the retention, and decay of complex knowledge and skills taught in contexts relevant to multi-day course formats. The present review has identified task factors to consider including the influence of characteristics such as task difficulty, type of skill, and the specificity of training to the work domain. Factors related to the learner include the skill level attained during training, the amount a practice received and subsequent on-the-job exposure to specific skills. There are also indications that for some tasks, we can expect retention of skills for 6
July 2018
A survey on health monitoring systems for health smart homes
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Haider Mshali, Tayeb Lemlouma, Maria Moloney, Damien Magoni Aging population ratios are rising significantly. Health monitoring systems (HMS) in smart environments have evolved rapidly to become a viable alternative to traditional healthcare solutions. The aim of HMS is to not only reduce costs but to also provide timely e-health services to individuals wishing to maintain their independence. In this way, elderly people can avoid, for as long as possible, any interaction with healthcare institutions (e.g. nursing homes and hospitals), which in turn reduces pressure on the health system. To fully realise this vision of seamless e-health services supporting people in need of them, a number of challenges that need further investigation still exist. To this end, we provide an overview of the current state of the art for smart health monitoring systems. We review HMS in smart environments from a general perspective and with a particular focus on systems for the elderly and dependent people. We look at the challenges for these systems from the perspective of developing the technology itself, system requirements, system design and modelling. We present a consolidated picture of the most important functions and services offered by HMS for monitoring and detecting human behaviour including its concepts, approaches, and processing techniques. Moreover, we provide an extensive, in-depth analysis and evaluation of the existing research findings in the area of e-health systems. Finally, we present challenges and open issues facing the smart HMS field and we make recommendations on how to improve future systems.
July 2018
Comparing measurements for emotion evoked by oral care products
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Yue Chen, Qin Gao, Qiaolu Lv, Nan Qian, Liang Ma The flavor of foods or oral care products can affect consumers' emotions and experience. We compared different methods for measuring emotion evoked by flavors, including self-report measures (Self-Assessment Manikin, or SAM and EsSense), electroencephalography (EEG), electromyography (EMG), and cardiovascular measures (HR and HRV). The results indicate that the difference of
July 2018
Movement times for a seated operator moving within and outside the Zone of Convenient Reach
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Alan H.S. Chan, Errol R. Hoffmann, Roni H.Y. Tung An experiment was aimed at determining the effect of the location of the movement on the movement time taken. The movements were made within the normal working area (NWA), zone of convenient reach (ZCR) and outside the zone of convenient reach. The latter movements required trunk movement to reach the movement zone. It was found that movement time (MT) was dependent only on Fitts' Index of Difficulty (ID) for movements within NWA and ZCR, but was also dependent on the amplitude of the movement when outside the ZCR, where trunk motion was required. Significant differences in MT occurred between each movement zone. Movements between NWA and ZCR zones were not significantly different in time to those within these zones. Times for movement between the NWA and outside the ZCR were not different to those made outside the ZCR. Relevance to industry Times for making movements are dependent on the region forward of the person in which the movements are made. When making movements outside the zone of convenient reach, where the arm is fully extended, trunk movement is required and movement times are increased.
July 2018
Analysis of the sensitivity of heart rate variability and subjective workload measures in a driving simulator: The case of highway work zones
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Mahmoud Shakouri, Laura H. Ikuma, Fereydoun Aghazadeh, Isabelina Nahmens Heart rate variability and subjective workload measures are extensively used to determine workload during driving. However, the sensitivity of heart rate and workload measurements in simulated driving environments is mostly unknown and can significantly affect the experiment results. The objectives of this paper are to determine how heart rate variability and subjective workload are affected in simulated highway work zones and study the relationship between heart rate variability, subjective workload, and driving performance indicators in simulated driving environments. Conventional lane merge (CLM), joint lane merge (JLM) and a road with no work zone are modeled with high and low traffic densities in a full-size driving simulator. NASA-TLX subjective workload measures and heart rate variability measures of root mean square of successive heartbeat differences (RMSSD), low frequency (LF), high frequency (HF) and the ratio of low frequency to high frequency (LF/HF) are collected in 30 participants. Variability in steering angle, braking and speed are used as driving performance indicators. Results show that compared to no work zone, participants experienced higher mental, temporal, and overall workload in the CLM scenario and poorer driving performance ratings in the CLM and JLM scenarios. All workload measures except for performance were higher with high traffic density. However, heart rate variability measures were not sensitive to the differences in driving scenarios and traffic densities. Pearson correlation coefficients indicated an association between RMSSD and all the subjective workload measures (r
July 2018
Effect of attention demand on upper trapezius muscle activity – A moderated mediation model
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Fiona Wixted, Leonard O’ Sullivan Manufacturing continues to become more automated. Consequently, production operators are monitoring automated processes for prolonged durations. The sustained attention required for monitoring work has been was found to be stressful for humans. This study hypothesises that sustained attention is a psychosocial stressor that increases upper trapezius muscle activity via a psychophysiological pathway in a series of simulated industrial tasks. A moderated mediation model was tested and accepted with the parasympathetic nervous system acting as a mediator contingent on certain levels of end-tidal CO2. The study outcomes confirmed that sustained attention acts as a psychosocial stressor which increases upper trapezius muscle activity by inhibiting the action of the parasympathetic system and increasing hyperventilation.
July 2018
Fifty years of Fanger's equation: Is there anything to discover yet?
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Francesca Romana d’Ambrosio Alfano, Boris Igor Palella, Giuseppe Riccio, J
July 2018
Impact of loading and work rest intervals on muscle micro-trauma
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Tianqi Tenchi Gao Smith, Sean Gallagher Purpose To examine whether rest intervals of different durations (“High Rest, Low Frequency” v. “Low Rest, High Frequency”), and load at different force exertion levels with different repetition frequencies (“High Load, Low Repetition” v. “Low Load, High Repetition”) have an impact on muscle micro-trauma, as such micro-trauma over repetitive loading and long-term muscle overuse can lead to musculoskeletal disorders (MSDs). Method Twenty-four adult males (mean age: 24.1 years; 3.6 SD) were randomly assigned to one of 4 bicep muscle eccentric exercise treatment groups (n
July 2018
A comparative study on the mechanical performance of the protective headgear materials to minimize the injury to the boxers' head
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Reza Razaghi, Hasan Biglari, Alireza Karimi This study was aimed at performing a dynamic Finite Element (FE) study to compare the performance of three different materials, i.e., the expanded propylene (EPP), expanded polystyrene foam (EPS), and polyvinyl alcohol sponge (PVA), in reducing the amount of injury as a result of a right hook to the face. To do that, a well-verified FE model of the skull, headgear, and punch was employed to simulate the hook in the zygomatic bone of the skull and the resulted von Mises stress in that under three different energy absorbing headgear materials were calculated. The mechanical properties of the EPP were obtained from the literature, while the mechanical properties of the PVA and EPS were measured by the authors. The mechanical properties of the EPS were measured under six different strain rates, and the mean mechanical values were assigned to the model. The experimental results revealed the values of 0.44
July 2018
Effectiveness of replacement of automotive side mirrors by in-vehicle LCD–Effect of location and size of LCD on safety and efficiency–
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Atsuo Murata, Yuki Kohno The World Forum for Harmonization of Vehicle Regulations (WP29) announced their policy to admit the replacement of side mirrors by cameras and LCD monitors. It is expected that the replacement enhances the fuel efficiency of automotives, and such a policy should be welcome in a sense. However, at present, few data on the safety and the efficiency of the replacement system are reported. The aim of this study was to examine whether the replacement of side mirrors by LCDs is effective from the viewpoints of the safety and the efficiency. The participants were required to simultaneously carry out a main simulated driving task and a secondary discrimination task of a pre-specified vehicle displayed on a side mirror or in-vehicle LCD. The safety and the efficiency evaluation measures were: tracking error in a simulated driving task, the percentage of overlook and false recognition of a target vehicle, the state of looking aside judged by the horizontal neck movement, the distance between own and the proceeding vehicles, the time until the appearance of the pre-specified vehicle on the side mirror or LCD to its discrimination and reaction, and the subjective rating on visibility. The experimental factors were the size (6-inch or 8-inch) and placement location of display (side mirror, around the center of driver, around a steering wheel, and around a side mirror), and the side of a driver (left or right). As a result of comparing the safety and efficiency measures between the side mirror and the replacement system, LCD was found to be more effective from the viewpoint of the reaction time to the pre-specified vehicle and the subjective rating on visibility.
July 2018
Effects of muddy terrain on lower extremity muscle activity and discomfort during the rice planting process
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Komkrit Juntaracena, Manida Swangnetr Neubert, Rungthip Puntumetakul The agricultural industry in Thailand and many Southeast Asian countries relies heavily on manual labor with little utilization of advanced machinery. Prior investigation of the rice cultivation process indicated a high prevalence of musculoskeletal disorders and abnormal alignments in lower extremities (LEs) of Thai farmers. Since most tasks are typically performed with bare feet in heavy, muddy terrain, higher LE muscular force is required to compensate for mud viscosity. Consequently, this study investigated effects of muddy terrain on LEs of 30 experienced famers during simulated planting tasks of the rice cultivation process. Muscle activity and discomfort perception of LE joints were compared between rigid (“No-Force”) and muddy (“Mud-Force”) surface conditions, revealing significantly increased muscle activity and discomfort perception of knee and ankle in muddy work environments. The resulting high risk of knee and ankle injury for rice farmers should therefore be attenuated by development of appropriate protective equipment or assistive devices. Relevance to industry The working surface constitutes a physical workplace environments with potential direct impact on productivity and safety of the workforce. In the agricultural industry, workers typically perform tasks on muddy terrain where, besides common slips, trips and falls, mud viscosity might intensify the force and lead to potential injury to the lower limbs.
July 2018
Factors associated with mental health status of hospital nurses
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Ahmad Bazazan, Iman Dianat, Leila Rastgoo, Zohreh Mombeini Association of individual and work-related factors as well as fatigue and quality of life (QoL) with the occurrence of mental health problems (MHPs) among 990 Iranian hospital nurses was investigated in this cross-sectional study. A questionnaire was used to collect data on individual and work-related factors, MHPs (by the General Health Questionnaire [GHQ–12]), fatigue (using the Multi-dimensional Fatigue Inventory [MFI–20]), and QoL (using the World Health Organization Quality of Life–BREF [WHOQOL–BREF]). MHPs (26.2% had GHQ–12 score
July 2018
Effect of a simulated tactical occupation stressor and task complexity on mental focus and related physiological parameters
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Cody E. Morris, Lee J. Winchester, Andrew J. Jackson, Ariel S. Tomes, Wesley A. Neal, Damon M. Wilcoxen, Harish Chander, Scott W. Arnett
July 2018
An investigation of consumer's choice of a healthcare facility when user-generated anecdotal information is integrated into healthcare public reports
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Sruthy Agnisarman, Amal Ponathil, Snehal Lopes, Kapil Chalil Madathil Recently, federal agencies began providing data in healthcare public reports comparing the quality of various healthcare providers to enable consumers to make informed choices about their healthcare needs. Though there is a rise in the number of consumers searching online for hospital reports, the inadequate design of the system prevents them from completing their search. This research investigates the effect on a consumer's choice of a healthcare facility when anecdotal information is incorporated into healthcare public reports. A 2
July 2018
The effects of a moving environment on postural control and task performance during manual materials handling, visual tracking and arithmetic tasks
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): Carolyn A. Duncan, Craig J. Hickey, Jeannette M. Byrne The purpose of this study was to evaluate the performance of cognitive tasks and manual materials handling in a moving environment. Specifically, we were interested in how task performance, postural control and lower limb muscle activation changed when tasks were performed in motion compared to no motion conditions. The motion trials were performed on a MOOG 2000E that created a 5-degree of freedom simulated environment. The tasks examined were a lifting task, a mental arithmetic task and a visual tracking task. Results of this experiment indicated that two outcome measures of a visual tracking task (time to task completion and performance errors) were negatively affected by motion, while arithmetic task performance was unaffected. Additionally, postural control was not affected by the presence of motion in the two cognitive tasks. Lifting was the only task where postural control appeared to be negatively affected as participants exhibited significant increases in lower limb muscle activation and non-significant increases in number of steps taken. The significant increase in time to completion and errors suggest that workers performing visual tracking type tasks in an offshore environment may be more prone to committing human factors errors. Furthermore, the results suggest that the risk of falls and injury due to loss of balance may be highest in workers regularly performing lifting tasks as this was the only instance where task performance in a moving environment negatively impacted postural control. These findings were attributed to greater demands placed on the postural control system when lifting during the motion condition. This study provides ergonomists with a resource they can use to better appreciate the risks associated with performance of job related tasks in a moving environment.
May 2018
Sustained attention when squatting with and without an exoskeleton for the lower limbs
Publication date: July 2018
Source:International Journal of Industrial Ergonomics, Volume 66 Author(s): R.S. Bridger, A.I. Ashford, S. Wattie, K. Dobson, I. Fisher, P.J. Pisula Twelve Royal Marines participated in a laboratory study of a passive lower limb exoskeleton. Participants stood for 5
May 2018
Editorial Board
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65

May 2018
A comprehension-based ergonomic redesign of Philippine road warning signs
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Judy Riza Ba
May 2018
Analysis of bus users' vibration exposure time
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Dragan Sekuli
May 2018
Upper limb disorders and hand-arm vibration risks with hand-held olive beaters
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Angela Calvo, Elio Romano, Christian Preti, Giampaolo Schillaci, Roberto Deboli Olive harvesting with hand-held beaters is a repetitive work, tiring and time consuming (more than 4–5
May 2018
Parametric design of garment flat based on body dimension
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Kaixuan Liu, Xianyi Zeng, Jianping Wang, Xuyuan Tao, Jun Xu, Xiaowen Jiang, Jun Ren, Edwin Kamalha, Tarun-Kumar Agrawal, Pascal Bruniaux Garment flats have a wide application in product development production and designing stages. However, the traditional drawing methods of garment flat are very time-consuming, and need professional drawing skills. In this paper, a parametric design method was proposed based on body dimension to draw garment flats. The relations among human body, flats and garment show that a garment flat has a close relation with human body and real garment. Graphic analysis shows that a garment flat is constrained by two kinds of parameters: geometric and dimensional parameters. Then, the parametric relation model between garment flat and human body dimensions was constructed. According to the parametric relation model, all the dimensions of a garment flat can be represented by several dimensional parameters and style parameters. Finally, an application program (JFRS, 2016) based on the proposed method was developed to generate garment flats. The result shows that the proposed method is more effective than traditional methods. Moreover, the engineering design methods have been successfully applied to improve design efficiency in artistic design in this research. This is a novel research idea in the field of fashion design, and could be further applied in other design domains.

Graphical abstract

image
May 2018
Differences in postural loading between primary and assistant surgeons during vaginal surgery
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Ladin A. Yurteri-Kaplan, Xinhui Zhu, Cheryl B. Iglesia, Robert E. Gutman, Andrew I. Sokol, Victor Paquet, Amy J. Park While increasing attention has been given to the prevalence of work-related musculoskeletal disorders (WMDs) among surgeons in various medical specialties, there is no quantitative information about the potential work-related risk factors that contribute to WMDs among vaginal surgeons in the operating room (OR). This study aimed to quantify the frequency and duration of awkward postures, as well as musculoskeletal discomfort experienced by primary and assistant vaginal surgeons during surgery in order to provide a first step of informing ergonomics interventions that reduce postural loading during surgery. Thirteen primary and 14 assistant surgeons were evaluated during 13 surgical cases. Surgeon pre- and post-operative musculoskeletal discomfort ratings were collected with surveys. During surgery, real-time observations systematically characterized the frequency and duration of awkward neck, trunk and shoulder postures using tablet-based ergonomics software. Surgeons experienced postoperative increases in musculoskeletal discomfort of the neck, wrists, hands, back and feet. Assistant surgeons experienced greater right and left shoulder discomfort than primary surgeons (p
May 2018
Relationships among static strength, dynamic strength, and psychophysically determined levels of acceptable force for a pushing task and foot pedal actuation task
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Neal Wiggermann, Jie Zhou Static strength or psychophysical tests are commonly used to define the capabilities of a working population, but these data are not easily translated to the peak forces that users apply to products or the operational forces associated with product ease of use. This study investigated the relationships among static strength, peak forces from rapid exertions, and psychophysically determined levels of acceptable forces for 39 subjects depressing a foot pedal and pushing against a vertical surface. Peak forces were greater than static strength and psychophysically determined acceptable forces were less than static strength. The ratio of peak to static strength was greater for the pushing task than for the foot pedal task, likely because of the types of motor units recruited and the inertial effects of each exertion. Relevance to industry Engineers should be mindful when using published strength values to generate requirements for product design. The ratios among static strength, peak force, and psychophysical limits appear to vary based on task and could affect product safety, effectiveness, and ease of use.
May 2018
Beyond OCRA: Predictive UL-WMSD risk assessment for safe assembly design
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Guido J.L. Micheli, Luca M. Marzorati In terms of occupational safety, one of the most important areas to consider is that of Upper-Limb Work-related MusculoSkeletal Disorders (UL-WMSDs), i.e. work-related disorders due to biomechanical overload of the upper limbs caused by protracted movements and/or repeated efforts throughout the workday. To estimate the risk associated with these disorders, the method known as the OCRA (OCcupational Repetitive Actions) Index is universally accepted; based on observation, it provides an index whose value is related to the expected percentage of pathological cases among the entire working population. This work introduces a different perspective to the problem in order to provide designers with a method – PRASAD: Predictive Risk Assessment for Safe Assembly Design – that makes them aware of the issues related to UL-WMSDs, starting from the earliest stages of the design of a new product and the related assembly workstation, well earlier than observing the activities associated to its production, that is when the assembly workstation is fully set and running. The main advantage of the method lies in the outcome, the PRASAD Index, which is fully comparable with the OCRA Index, so that the proposal leverages on the well-known OCRA standard approach. The new method, aimed at a use in the design phase (of a new workstation for a new product), is potentially useful for a conventional risk assessment of existing workstations as well: it combines the rapidity of a checklist for the initial screening with a level of detail that is characteristic of advanced methods, such as the OCRA Index. Finally, PRASAD represents an innovation in the risk assessment of UL-WMSDs because of its feature of modelling the concept of “Technical Actions”, which enables estimating (and taking into account) the repetitiveness of tasks, based on technical design and production management data.
May 2018
An analysis of injuries to front-end loader operators during ingress and egress
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Mahiyar F. Nasarwanji, Jonisha Pollard, William Porter Slips, trips, and falls from mobile mining equipment have been documented for decades. However, little research has been conducted to determine the events precipitating these incidents during ingress or egress. This study examined slips, trips, and falls sustained during ingress or egress from front-end loaders to determine the frequencies of factors that may contribute to injuries. Non-fatal injuries, when getting on or off of front-end wheel loaders specifically, were identified, coded, and analyzed from the Mine Safety and Health Administration's accidents, injuries, and illnesses database. Overall trends, events that precipitated the injury, injuries sustained, contributing factors, location of the individual, and equipment characteristics were analyzed. More incidents occurred during egress (63%); and egress is believed to be more hazardous than ingress. Foot slips were the most common event that precipitated the incident and the leading cause of these was contaminants on the equipment. Misstep, loss of footing, and step on/in related incidents were more common during egress and are likely due to the operator's reduced visibility when descending a ladder facing the equipment, limiting their ability to detect hazards. Egress also makes an operator less capable of avoiding unsafe ground conditions as indicated by the significant number of step on/in injuries occurring on the ground during egress. Most of the front-end loaders associated with the incidents were found to have bottom rungs with flexible rails, which may also increase fall risk during egress due to inconsistent rung heights and lengthy transition areas from the ground, through the flexible-railed rungs, to the rungs with rigid rails. Recommendations are provided to reduce the risk for slips, trips, and falls from mobile mining equipment.
May 2018
Can the use of an alternatively designed tamper alter spine posture and risk of upper limb injury while tamping espresso?
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Diane E. Gregory, Stephanie E. Romero Tamping is the process of compressing espresso grinds in order to pull shots of espresso and has been identified as one of the most strenuous tasks performed by baristas due to relatively high force and repetition as well as awkward spine and upper limb postures. Therefore, the current study aimed to determine if an alternatively designed tamper is able to alter spine posture and upper limb risk of risk while tamping. To test this, the current study measured 1) three-dimensional thoracic and lumbar spine posture using electromagnetic sensors adhered over the spine; 2) force applied to the tamper using a force plate; and 3) risk of upper limb injury using RULA and the Strain Index while tamping with a traditional vertical handle tamper and a flat handle-less tamper. Ten experienced baristas each performed 20 tamps (10 with the traditional tamper and 10 with the flat tamper; order randomized) of standard weight/grind espresso. Tamping with the flat tamper resulted in more neutral thoracic and lumbar spine postures and reduced force applied when using the flat tamper. The flat tamper also resulted in a lower score for both RULA and the Strain Index indicating a lower risk of injury to the upper limb. Based on the findings of this study, a flat, handle-less tamper has the potential to be a more ergonomically effective tool for tamping espresso grinds.
May 2018
A comparative study on designer and customer preference models of leather for vehicle
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Wonjoon Kim, Yushin Lee, Joong Hee Lee, Gee Won Shin, Myung Hwan Yun The purpose of this study is to examine the difference in the tactile perception between designers and customers for leathers in vehicle interiors and to derive preference models that describe the relationship between the tactile perception and physical measurements the leathers. An experiment was performed on ten natural leathers manufactured in the automotive industry. The questionnaires were designed based on six pairs of adjectives: wet-dry, slippery-sticky, smooth-rough, flat-bumpy, hard-soft, and thin-thick for sensory evaluation. In addition, eight physical measurements were selected to identify the characteristics of leathers that affect the tactile perception of designers and customers. The relationship between the experiment results and physical measurements was determined by correlation and regression analyses. The statistical results show a significant difference between designer and customer in the tactile properties of the leathers. Also, the tactile perception from both designers and customers was associated with more than one physical measurement, while the designers and customers showed different tactile association with physical measurements. This study contributes to the comprehension and recognition of the differences in preferences for leathers in vehicle interiors between designers and customers and, by designing the prediction model of preference based on the physical measurements, the uncertainty in the market for automobile manufacturers can be reduced.
May 2018
Predicting user performance time for hand gesture interfaces
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Orlando Erazo, Jos
May 2018
Can participatory ergonomics process tactics improve simulator fidelity and give rise to transdisciplinarity in stakeholders? A before–after case study
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Anjum Naweed, Duncan Ward, Chris Gourlay, Drew Dawson Production of high fidelity simulators requires stakeholders to remain engaged throughout the process, and development of research-oriented simulators requires the sharing of knowledge beyond individual disciplines. Failings in simulator design that compromise the goals of the End-user evidence a participatory problem associated with how actors are coordinated during its development. Participatory ergonomics has been shown to improve collaboration between eclectic groups in a variety of psychosocial settings and may help people transcend disciplinary boundaries, enabling them to anticipate problems, create solutions and produce innovation. A before–after approach involving design evaluations and Design Decision Group sessions with three stakeholder groups was used to evaluate and re-design a high fidelity rail simulator. Prior to re-design, the evaluation identified issues with functional design, task design, visual ergonomics, and tractability for the End-user, which meant that the simulator was unfit for purpose. Following the participatory ergonomics process, the second evaluation identified significant improvements in all these areas and solutions, providing compelling evidence that transdisciplinarity had occurred. Based on the pattern of continued engagement, the process produced further innovation and opportunity for collaboration in the long term. This study supports the utility of collaborative initiatives that energise iterative design processes, find common ground, and ensure that knowledge and methods are utilised in ways that transcend the boundaries of conventional disciplines. The study reveals a unique perspective and research scope on the design of a simulator facility, with insights about research-industry partnerships that highlight the value and necessity of participatory processes. This work contributes to the literature on participatory methods calling for more research on team function, and a corresponding framework incorporating participatory ergonomics and collective function is proposed for further study. Relevance to Industry The approach and lessons from this study are broadly generalisable to a variety of industry contexts, particularly those that would benefit from conditions where people with disparate views must work together with end-users to achieve a common goal and where exchange of knowledge is a crucial predictor for success.
May 2018
Determining temperature ratings for children's sleeping bags
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Meredith Schlabach, Elizabeth A. McCullough, Steven J. Eckels Manufacturers label their sleeping bags with a temperature rating to assist consumers in selecting a bag that will provide them with an acceptable level of thermal protection under the expected conditions of use. These temperature ratings are typically based on thermal manikin testing and whole-body heat loss models. Due to physical and physiological differences between children and adults, existing adult sleeping bag temperature rating models cannot be applied to children's bags. Therefore, a model for determining the temperature ratings of children's sleeping bags is proposed. Issues related to measuring the thermal insulation of children's sleeping bags are also discussed. The results of the model indicate that an older child has a higher temperature rating than a younger child for the same level of insulation. This is due to the higher sleeping metabolic rate of younger children.
May 2018
The cognition and ergonomic design of a direct manipulation digital drawing pen for children
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Fong-Gong Wu, Tai-Hua Lee, Chia-Jung Tsai Presently, direct manipulation-based digital drawing developments have mostly focused on adult cognition. The adult design principles do not apply to children because their needs, skills, and expectations all differ. Thus, we conducting research and survey related to the field of children's digital drawing are essential. This study mainly recruited children aged 7–10 years as research participants. After investigations, we found that: (1) Children often use brush selection, brush stroke thickness changes, color changes, color fill functions, and eraser functions. (2) The sizes of the digital pen for children (7–10 years old): Length 120 mm, diameter 8 mm, hexagonal cross-section. (3) From the tilt angles of the pen and the multiple regression analysis of stroke thickness, we obtained the following formula: tilt angle = thickness 

The cumulative effects of work-related factors increase the heart rate of cabin field machine operators
Publication date: May 2018
Source:International Journal of Industrial Ergonomics, Volume 65 Author(s): Martin Jankovsk
view: 209

Get The Starter Ritual Set for Dry Skin Only $59 ($89 Value) at Tatcha.com! While Quantities Last!

Start: 11 Oct 2017 | End: 30 Apr 2018

Save Up to 50% on Brand Name Tires Plus Free Shipping at Bestusedtires.com!

Start: 03 Oct 2017 | End: 30 Apr 2018

Save up to 20% on the best available rate when travelling to Moscow!

Start: 15 Oct 2017 | End: 31 Jan 2018

Search All Amazon* UK* DE* FR* JP* CA* CN* IT* ES* IN* BR* MX
Booking.com B.V. is based in Amsterdam in the Netherlands. Ready for some statistics? Our 1,534,024 properties, including 860,482 holiday rentals, are located in 123,105 destinations in 229 countries and territories, and are supported internationally by 198 offices in 70 countries.
2013 Copyright © Techhap.com Mobile version 2015 | PeterLife & company
Skimlinks helps publishers monetize editorial content through automated affiliate links for products.
Terms of use Link at is mandatory if site materials are using fully or particulary.
Were treated to the site administrator, a cup of coffee *https://paypal.me/peterlife
Yandex.ru