Automated worker action recognition helps to understand the state of workers' actions, enabling effective management work performance in terms productivity, safety, and health issues. A wristband equipped with an accelerometer (e.g., activity tracker) allows collect data related hand activities without interfering their ongoing work. Considering that many construction involve unique movements, use acceleration from a has great potential for activities. In this context, authors examine...

Beauty industry highly depends on human resources, because it provides technical services and service that cannot be mechanized. Considering the employment characteristics beauty characteristics, this study aimed to know work environment, calling job embeddedness of employees, analyze correlation among those factors. Also provide basic data for development decreases employees’ turnover rate enhances quality by raising satisfaction with their embeddedness. The were collected from shop workers...

Masons regularly perform physically strenuous and demanding duties that may exceed a safe limit. Such activities can contribute to an early retirement for masons, resulting in shortage of skilled craft workers. Previous ergonomic studies have observed workers develop safer more productive work techniques as they gain experience. This study aims analyze relationships between body loads, experience, methods. Specifically, we expanded previous pilot by increasing the number participants from 21...

Given that labor is one of the most important resources in a construction project, collecting field data on workers' activities (i.e., work sampling) critical to understanding and managing performance for productivity analysis. Unlike manual observation used sampling, automated action recognition analysis using sensors, such as motion image enable continuous worker monitoring corresponding task assessment. Among diverse an accelerometer has great potential due its richness mobility. In this...

In the era of Industry 4.0, marked by integration digitization, automation, and data synthesis, emerging technologies play a vital role in mitigating ergonomic hazards within construction work environments. This study investigates research trends encompassing adoption three categories technologies—(1) wearable sensors; (2) extended reality, which combines virtual reality (VR), augmented (AR), mixed (MR); (3) exoskeletons robotics—as means to mitigate risk occupational nonfatal injuries...

Physically demanding and repetitive tasks expose workers to work-related musculoskeletal disorders (WMSDs). Over the last few decades, various rule-based postural assessment systems have been developed widely used facilitate measurement evaluation of risks related WMSDs in many industries. However, applicability involving heavy material handling has not yet examined. This study investigated three (RULA, REBA, OWAS) a bricklaying task. To achieve this goal, an automated tool was implement...

Inertial Motion Capture (IMC) systems enable in situ studies of human motion free the severe constraints imposed by Optical systems. Inverse dynamics can use those motions to estimate forces and moments developing within muscles joints. We developed an inverse dynamic whole-body model that eliminates usage force plates (FPs) uses patterns captured IMC system predict net 14 major validated comparing its estimates Ground Reaction Forces (GRFs) ground truth obtained from FPs predictions static...

Automated Monitoring of Physical Fatigue Using Jerk Lichen Zhang, Mohsen Mutasem Diraneyya, Juhyeong Ryu, Carl Haas and Eihab Abdel-Rahman Pages 989-997 (2019 Proceedings the 36th ISARC, Banff, Canada, ISBN 978-952-69524-0-6, ISSN 2413-5844) Abstract: Construction workers are commonly subjected to ergonomic risks due manual material handling that requires high levels energy input over long work hours. in musculature is associated with decline postural stability, motor performance, altered...

Motion Data Based Construction Worker Training Support Tool: Case Study of Masonry Work JuHyeong Ryu, Lichen Zhang, Carl T. Haas and Eihab Abdel-Rahman Pages 1079-1084 (2018 Proceedings the 35th ISARC, Berlin, Germany, ISBN 978-3-00-060855-1, ISSN 2413-5844) Abstract: work involves a number repetitive physically demanding tasks. Exposure to these labor intensive tasks with awkward postures result in an increase biomechanical risk factors that may lead work-related musculoskeletal disorders...

Since energy expenditure (EE) has been proven an effective representation of physiological demands, field EE measurement enables us to assess worker's physical demands from ongoing construction tasks. However, because requires special facilities and equipment, collecting data in the remains challenging. One possible solution is use heart rate (HR) estimate according a linear relationship between HR EE. Recent advancements wristband-type activity tracker can potentially open new doors for...

Masons are aided by ergonomic inventions such as tools, processes, and equipment, yet they still subjected to performing physically demanding hazardous tasks at the worksite. Experienced masons have a high level of job satisfaction; however, also experience rate attrition during their training phase do not, on average, long working life nonconstruction workers. By analyzing expert masons' performance, in terms body kinematics load levels, various masonry activities, guidelines for safer more...

Workers’ fatigue is a significant problem in physically demanding occupations. Physical known to result the inability maintain proper posture and working technique. Consequently, workers lose their ability safely effectively perform duties. Thus, understanding physical demands of labor-intensive work great importance protecting workers’ safety, maintaining productivity. Current assessments methods, including surveys questionnaires, are subjective lack reliability. Objective based on...

The construction industry is one of the industries with highest rates musculoskeletal disorders (MSDs). Masons are particularly susceptible to overexertion and back injuries due physical demands their jobs and, thus, more MSDs. While previous research established that expert masons use different strategies perform work while experiencing reduced joint loads increased productivity, it was unclear which movement they used. This study analyzed movements novice, apprentice, characterize postural...

Musculoskeletal disorders are prevalent in the construction industry, particularly among masons who at risk of overexertion and back injuries due to physical demands their jobs. Previous research established that expert employ different work strategies reduce joint loads increase productivity; however, it was unclear which movement they used. This study analyzed movements novice, apprentice, identify postural characteristics. Specifically, postures motions during a standard wall building...