Introduction: Repetitive strain injuries are one of the most prevalent problems in occupational diseases. Repetition, vibration and bad postures of the extremities are physical risk factors related to work that can cause chronic musculoskeletal disorders. Repetitive work on a computer with low level contraction requires the posture to be maintained for a long time, which can cause muscle fatigu...

Background and Aim: Personnel of the sheriff's departments as human resources, due to the inherent characteristics of the military profession, are faced with numerous occupational problems and as a result are exposed to greater psychological vulnerability than those of other occupations. The purpose of this study was to investigate the relationship between psychological characteristics of depre...

OBJECTIVE The effects of fatigue on multiple-task performance were explored through computational cognitive modeling. BACKGROUND Fatigue typically has a negative impact on human performance. Biomathematical models exist that characterize the dynamics of human alertness, but the link between alertness and in situ performance on specific tasks is tenuous. Cognitive architectures offer a princip...

Nowadays, the human error is usually identified as the conclusive cause of investigations in road accidents. The human although is the person in control of vehicle until the moment of crash but it has to be understood that the human is under continued impact by various factors including road environment, vehicle and human’s state, abilities and conduct. The current advances in design of vehicle...

As cyclic fatigue is considered to be a major cause of clinical tooth fractures, achieving a comprehensive understanding of the fatigue behavior of dentin is of importance. In this note, the fatigue behavior of human dentin is examined in the context of the Kitagawa-Takahashi diagram to define the limiting conditions for fatigue failure. Specifically, this approach incorporates two limiting thr...

Most manufacturers use human-machine systems to produce high-quality products. Dealing with human-machine systems is very complicated since not only machines should be utilized in proper condition but also appropriate environment should be provided for human resources. Most manufacturers have a maintenance plan for machines but many of them do not have a proper work-rest schedule for human reso...

Background & Aims of the Study: Today, in many sensitive occupational environments, human error can lead to catastrophic events. Given that the sensitive task of a control area operator, which in the occurrence of malfunction or failure leads to irreparable events, it is important to predict human errors to reduce its adverse consequences. Therefore, the present study was  perform by aiming to ...

Fatigue is the main factor to cause traffic accidents. Based on survey of existed fatigue detection methods, a new method for extracting characteristics of Human face based on Gabor translation is proposed in this paper, and based on which, by combing with the frequent patterns mining, a new fatigue detection method for vehicle drivers based on the Human face image sequences is proposed. Simula...