The method of processing of laser ranging data collected using the passively mode locked YAG train laser is described. The algorithm for resolving of individual peaks in measured ranges histogram and system internal noise determination is explained together with the crosscorrelation methods for system calibration constant evaluation. The low/Lageos satellite and calibration ranging results are included.
The passively mode locked frequency doubled oscillator amplifier Nd YAG laser radar transmitter with the train of 3-5 70psec long pulses, 30mJ output energy in green and 0.2 mrad divergence in beam with reprate 1.-2.5. Hz is described.
On the basis of analyzing the principles of the quantum rotation gates and quantum controlled-NOT gates, an improved design for CNOT gated quantum neural networks model is proposed and a smart algorithm for it is derived in our paper, based on the gradient descent algorithm. In the improved model, the input information is expressed by the qubits, which, as the control qubits after being rotated by the rotation gate, control the qubits in the hidden layer to reverse. The qubits in the hidden layer, as the control qubits after being rotated by the rotation gate, control the qubits in the output layer to reverse. The networks output is described by the probability amplitude of state |1> in the output layer. It has been shown in two application examples of pattern recognition and function approximation that the proposed model is superior to the standard error back-propagation networks with regard to their convergence rate, number of iterations, approximation ability, and robustness.
Models of stellar atmospheres are based on assumption of their plane-parallel or spherical symmetry. Violation of this assumption by tides and rotation in close binaries leads to incompatibility of hydrostatic and radiative equilibria. Improvement of model atmospheres in this respect is desirable for simulation of light curves and line profile changes. Moreover, atmospheres of
contact components of interacting binaries determine initiai conditions of dynamics of gaseous streams and in this way influence the behaviour of the binary system.
Protože bolest při vzniku, průběhu a udržování ovlivňují i psychosociální faktory, používá se v léčbě bolesti také psychoterapie. Dominuje užití kognitivně-behaviorální terapie (KBT). Článek v úvodu popisuje historii KBT a její tři základní přístupy: behaviorální (operantní), kognitivní a kognitivně-behaviorální. Vymezuje indikace ke KBT a nejčastější problémy v léčbě. Specifikuje základní techniky KBT v léčbě chronické bolesti, a to kognitivní restrukturalizaci a nácvik dovedností pro zvládání bolesti a stresu (edukace, adaptivní pozitivní sebeinstruktáž, relaxace a imaginace, zvyšování aktivity, expozice, strukturované řešení problémů, zvládání relapsu). Vymezuje konkrétní oblasti chronické bolesti, které jsou cílem multidisciplinárního programu léčby bolesti obsahující KBT. Strukturuje základní předpoklady úspěšného programu: přímé a nepřímé pozitivní posílení bolestivého chování, pozitivní posílení požadovaného chování, zvýšení tělesné kondice, kognitivní přerámování, edukace, výcvik v KBT v léčbě bolesti a dodržování principů KBT. Článek shrnuje efektivitu KBT v léčbě chronické bolesti u dospělých, popisuje problémy při jejím sledování a navrhuje některé inovace pro její zvýšení., Pain, from its origin through its treatment and in its subsequent maintenance, is influenced by psychosocial factors. For this reason, psychotheraphy is also used in pain treatment. The use of cognitive-behavioral therapy (CBT) is dominant. The paper describes the history of CBT and its three basic approaches: behavioral, (operant), cognitive, and cognitive-behavioral. The indications to CBT and the most frequent problems in treatment are isolated. Basic CBT techniques in chronic pain treatment, namely the cognitive restructuration and the practice of skills for pain and stress management (education, adaptive positive self-instruction, relaxation and imagination, increasing activity, exposition, structured problem solving, and relapse coping) are specified. Particular fields of chronic pain which represent the goal of multidisciplinary program of pain treatment including CBT are examined. The author structures basic assumptions of successful program: direct and indirect positive reinforcement of pain behavior, positive reinforcement of required behavior, improvement of physical condition, cognitive reframing, education, training in CBT in pain treatment, and conforming to the CBT principles. The paper sumarizes the efficiency of CBT in chronic pain treatment in adult patients, describes problems in its monitoring and suggests some innovations for increasing its use., Jaroslava Raudenská., and Obsahuje seznam literatury
The article explains why it is necessary to deal with a mechanical stress in thin film coatings especially in multilayer systems. The published model’s properties are overviewed and a new alternative model of mechanical stress in multilayer is proposed. Both models are compared including the discussion of their advantages for utilization in different situations. and V článku jsou uvedeny důvody, proč je významné se zabývat mechanickým napětím tenkých vrstev, zejména systémem více vrstev. Shrnuje vlastnosti modelu uvedeného v literatuře a podává odvození alternativního popisu jednotlivých vrstev. Jsou porovnány oba přístupy a uvedeny výhody jejich použití v různých případech.
Information retrieval in information systems (IS) with large amounts of data is not only a matter of an effective IS architecture and design and technical parameters of computer technology used for operation of the IS, but also of an easy and intuitive orientation in a number of offers and information provided by the IS. Such retrievals in IS are, however, frequently carried out with indeterminate information, which requires other models of orientation in the environment of the IS.
The paper present a model of sand sediment transport in water stream in vicinity of a high cylindrical column. It is assumed that an averaged turbulent flow is horizontally layered in vicinity of the cylinder. In each layer the flow around the cylinder is modelled as a potential flow generated by a vertical dipole line. Flow in viscous sub-layer on the surface of thecylinder is neglected. The presented flow model is approximate; however it is simple for use. Trajectories of saltating particles near the cylinder were calculated. Further investigation of such flow will allow a determination of zones where solid particles will collide with the column. That might be useful for prevention of its damage or destruction. and Obsahuje seznam literatury