Behavior representations in simulation environments have become increasingly sophisticated as computational power and understanding of human cognitive processes have increased. Despite improvements in the breadth and depth of models of human behavior, comparatively little research has explored how human cognition is moderated by external and internal factors. In this review paper, we focus on f...

BACKGROUND Fatigue is a chief complaint in cancer patients, and warrants effective treatment. Biofield therapies are complementary medicine approaches used by cancer populations. There is little information about their efficacy. METHODS This blinded, randomized controlled trial examined the effects of 4 weeks (eight 1-hour sessions) of biofield healing compared with mock healing and a waitlis...

HYPOTHESIS A novel approach to identify at-risk periods among orthopedic surgical residents may direct fatigue risk mitigation and facilitate targeted interventions. DESIGN A prospective cohort study with a minimum 2-week continuous assessment period. Data on sleep and awake periods were processed using the sleep, activity, fatigue, and task effectiveness model. SETTING Rotations at 2 acade...

Structural deterioration is becoming a major problem when considering long term performance of infrastructures. The existence of a corrosive environment, cyclic loading and concrete cracking cause structural strength degradation. The interaction of these conditions can only be taken into account when modeling the coupled action. In this paper, a new model to assess lifetime of RC structures sub...

In this research, attempts are made to conduct concrete muscle fatigue analysis of arbitrary motions on OpenSim, a digital human modeling platform. A plug-in is written on the base of a muscle fatigue model, which makes it possible to calculate the decline of forceoutput capability of each muscle along time. The plug-in is tested on a three-dimensional, 29 degree-of-freedom human model. Motion ...

Photon absorbers, masks, and shutters of the third-generation light sources are subjected to intense thermal stress cycles from the high intensity x-ray beams. A collaborative research study is underway at APS and ESRF to establish thermal fatigue design criteria for Glidcop® Al-15, which is commonly used for high-heat-load components. A nonlinear finite element methodology is used for modeling...

In this study, based on a regression of the crack tip displacements, the stress intensity range in fatigue is quantitatively determined for the shape memory alloy Ni2FeGa. The results are compared to the calculated stress intensity ranges with a micro-mechanical analysis accounting for the transformation-induced tractions. The effective stress intensity ranges obtained with both methods are in ...

In the past, research to improve FES-LCE training focused on improving stimulation patterns, training protocols, control algorithms, and biomechanical modeling. Pedalling cadence is one parameter that has received very little attention until recently. Recent research from our laboratory has shown that the fatigue rate of electrically stimulated muscle decreases as pedalling cadence decreases. T...

conclusions people with chronic kidney disease regardless of their age, gender, state of health, and duration of hemodialysis experience high levels of fatigue; it is particularly important for health providers to understand this level of fatigue which affects the daily life of patients. results all the patients experienced degrees of fatigue and 50 (30.7%) of the participants experienced a hig...

In this study, a finite element study of design factors, including material constants and geometry parameters, affecting fatigue life of solder joints of a typical cavity-down Thermally Enhanced Ball Grid Array (TEBGA) assembly subjected to an accelerated temperature cycling load is performed. In order to precisely characterize the fatigue life of solder joints, the geometry profile of solder j...