Articles (MLT)
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Item Operation assessment of cogeneration power plant by thermodynamic model(2019) Hromádka, Aleš; Jiřičková, Jana; Martínek, Zbyněk; Sirový, Martin
Item Monitoring of a skin temperature in vicinity of a surgical wound(Západočeská univerzita v Plzni, 2016) Tolar, David; Štork, Milan; Pinker, Jiří
Item Three-body segment musculoskeletal model of the upper limb(University of West Bohemia, 2013) Valdmanová, Linda; Čechová, HanaThe main aim is to create a computational three-body segment model of an upper limb of a human body for determination of muscle forces generated to keep a giv en loaded upper limb position. The model consists of three segments representing arm, forearm, hand and of all majo r muscles connected to the segments. Muscle origins and insertions determination corresponds to a real anatom y. Muscle behaviour is defined according to the Hill-type muscle model consisting of contractile and viscoelastic element. The upper limb is presented by a system of three rigid bars connected by rotational joints. The whole limb is fixed to the frame in the shoulder joint. A static balance problem is solved by principle of virtual work. The system of equation describing the musculoskeletal system is overdetermined because more muscles than necessary cont ribute to get the concrete upper limb position. Hence the mathematical problem is solved by an optimization method s earching the least energetically-consuming solution. The upper limb computational model is verified by electromyography of the biceps brachii muscle.Item Use of electromyography measurement in human body modeling(University of West Bohemia, 2011) Valdmanová, Linda; Čechová, HanaThe aim of this study is to test the use of the human body model for the muscle activity computation. This paper shows the comparison of measured and simulated muscle activities. Muscle active states of biceps brachia muscle are monitored by method called electromyography (EMG) in a given position and for given subsequently increasing loads. The same conditions are used for simulation using a human body model (Hynˇc´ık, L., Rigid Body Based Human Model for Crash Test Purposes, EngineeringMechanics, 5 (8) (2001) 1–6). This model consists of rigid body segments connected by kinematic joints and involves all major muscle bunches. Biceps brachia active states are evaluated by a special muscle balance solver. Obtained simulation results show the acceptable correlation with the experimental results. The analysis shows that the validation procedure of muscle activities determination is usable.Item On scaling of human body models(University of West Bohemia, 2007) Hynčík, Luděk; Nováček, Vít; Bláha, Pavel; Chvojka, Ondřej; Krejčí, PetrAbstract Human body is not an unique being, everyone is another from the point of view of anthropometry and mechanical characteristics which means that division of the human body population to categories like 5%-tile, 50%-tile and 95%-tile from the application point of view is not enough. On the other hand, the development of a particular human body model for all of us is not possible. That is why scaling and morphing algorithms has started to be developed. The current work describes the development of a tool for scaling of the human models. The idea is to have one (or couple of) standard model(s) as a base and to create other models based on these basic models. One has to choose adequate anthropometrical and biomechanical parameters that describe given group of humans to be scaled and morphed among.
