background carrying heavy backpacks by school students at growth age can cause irreversible physical harms. this study aimed to investigate the relationship between backpack weight and the incidence of lordosis, kyphosis, scoliosis, and dropped shoulders in elementary school students. materials and methods this descriptive-analytical study was conducted in 2015 in abadan, iran, and 383 elementa...

In this study, an optimization-based approach for simulating the walking motion of a digital human model is presented. A spatial skeletal model having 55 degrees of freedom is used to demonstrate the approach. Design variables are the joint angle profiles. Walking motion is generated by minimizing the mechanical energy subjected to basic physical and kinematical constraints. A formulation for s...

Sensor Fusion and Online Calibration of an Ambulatory Backpack System for Indoor Mobile Mapping

This paper proposes a three-dimensional mathematical model of the biomechanical interactions between backpack and bearer during load carriage. The model considers both the coupled pack motions, which follow the torso, and also the longitudinal compliance and damping in the backpack suspension. The pack interaction forces and moments, acting on the bearer, are determined from kinematic relations...

background: . the aim of this study was to investigate of relationship of musculoskeletal symptoms with weight of backpack in tehran secondary school students. methods: this cross-sectional study was performed in the city of tehran in 2009. two hundred thirteen students partici­pated in study. nordic musculoskeletal questionnaire was used, asking about complaints of back, neck, and/or shoulders...

software tool that bins genomic fragments that have first undergone limited preassembly into contigs. Their strategy uses a variational Bayesian approach combining sequence composition and correlated abundance across multiple samples to produce sequence assignments. CONCOCT bins genomes with high precision and recall in simulated and real data, providing higher coverage than can typically be re...

This article evaluated the functionality and reliability of personal airborne equipment backpack TL-98 before its launch in military parachute operations. An objective this project was verification TL-98’s characteristics which could be important terms safety operation parachute, i.e., during flight fall tests. A major effort within research focused on tests standard operational conditions. The...

Automated 3D modeling of building interiors is useful in applications such as virtual reality and entertainment. Using a human-operated backpack system equipped with 2D laser scanners and inertial measurement units, we develop four scan-matching-based algorithms to localize the backpack and compare their performance and tradeoffs. We present results for two datasets of a 30-meter-long indoor ha...