I n order to study the human being locomotion system, a multi-degrees of freedom (DOFs) biped prototype equipped with flexible feet, which is named as ROBIAN, is developed. I n this paper, the conceptual design of the biped prototype R O B I A N is discussed. The features of the R O B I A N are: (a) parallel mechanism at the hip and the ankle, (b) modular design and (c) 1DOF active/passive join...

Objective: Steady-state visual evoked potentials (VEPs) were recorded to study the mechanisms that underlie visual attention. Methods: VEPs were recorded from 1 cycle/degree sinusoidal grating contrast reversed at various temporal frequencies (6–10 Hz). This was displayed in one hemifield. A letter search display was flashed at a random rate in the other hemifield. The subject performed a deman...

background: radon and its daughters are amongst the most important sources of natural exposure in the world. soil is one of the significant sources of radon/thoron due to both radium and thorium so that the emanated thoron from it may cause increased uncertainties in radon measurements. recently, a diffusion chamber has been designed and optimized for passive discriminative measurements of rado...

background: separate radon and thoron measurements in soil are very important in assessment of internal exposure due to inhalation of such radioactive gases. materials and methods: in this study, a low cost, small size, passive diffusion chamber has been developed for simple measurement of radon-222 and radon-220(thoron) gases separately in soil. the diffusion chamber consists of two films and ...

This paper presents a method for the autonomous calibration of six degrees-of-freedom parallel robots. The calibration makes use of the motorized prismatic joint positions corresponding to some sets of configurations where in each set either a passive Universal joint or a passive Spherical joint is fixed using a lock mechanism. Simulations give us an idea about the number of sets that must be u...

A vibration isolation module with zero-power magnetic suspension is developed to retrofit a passive vibration isolation system to improve the performance against direct disturbance. In the module, the zero-power magnetic suspension mechanism is connected in series with a normal spring through a middle mass. This structure can generate zero compliance to direct disturbance while the transmitted ...

Soluble BSA-anti-BSA complexes, formed in antigen excess, give immediate skin reactions in normal guinea pigs. The mechanism of the reaction is not that of passive or reversed passive anaphylaxis. The complex itself is toxic. Skin activity of the complex depends on its composition. It has become obvious that the complex composed of two antigen molecules and one antibody molecule, (Ag(2)Ab), doe...

This paper proposes a power saving mechanism with variable sleep period to reduce the power consumed by optical network units (ONUs) in passive optical network (PON) systems. In the PON systems based on time division multiplexing (TDM), sleep and periodic wake-up (SPW) control is an effective ONU power saving technique. However, the effectiveness of SPW control is fully realized only if the sle...

1 error accumulation 2 3 Running head: A passive mechanism for movement drift 4 5 Authors: Brendan D. Cameron, Cristina de la Malla, and Joan López6 Moliner 7 8 Affiliations: 9 a. Vision and Control of Action Group, Departament de Psicologia Bàsica, 10 Universitat de Barcelona, Passeig de la Vall d’Hebron, 171, 08035, Barcelona, 11 Catalonia, Spain 12 13 b. Institute for Brain, Cognition, and B...