325 research outputs found
Agent-Based Medical Diagnosis Systems
Medical diagnostics elaboration many times is a distributed and cooperative work, which involves more medical human specialists and different medical systems. Recent results described in the literature prove that medical diagnosis problems can be solved efficiently by large-scale medical multi-agent systems. Cooperative diagnosing of medical diagnosis problems by large-scale multi-agent systems makes the diagnoses elaborations easier and may increase the accuracy of elaborated diagnostics. The purpose of the study described in this paper consists in the development of a novel large-scale hybrid medical diagnosis system called LMDS. The LMDS system is composed from physicians, medical expert system agents developed in our previous works and medical ICMA agents. Medical ICMA agents represent a novel class of agents with the ICMA architecture developed in our previous works, endowed with medical diagnosis capability. The main novelty of the LMDS system consists in the novel classes of agent members of the system and the manner in which the members of the system contribute to the problems solving. Each diagnostics can be elaborated cooperatively by more members of the system. The diagnosis system can solve difficult medical diagnosis problems whose solving must be discovered cooperatively by the members of the system. Many difficult medical problem solving requires medical knowledge that cannot be detained by a single physician or a medical computational system. Simulations prove the correctness in operation of the LMDS system
Analytic solutions of the Madelung equation
We present analytic self-similar solutions for the one, two and three
dimensional Madelung hydrodynamical equation for a free particle. There is a
direct connection between the zeros of the Madelung fluid density and the
magnitude of the quantum potential.Comment: 10 pages, 3 figure
Description of the gas and service water consumption process by means of probability calculation
The characteristics of random gas and service water consumption of individual consumer groups (quantity,
intensity, simultaneity, etc.) are probability variables in the mathematical sense. In scheduling gas and
service water consumption, the chances of the realisation of the characteristics and the probability
distribution also have to be determined. The authors relate the determination of scheduled values to the
extent of assumption of risk. In the study they present new methods based on the theory of stochastic
processes for describing the gas consumption of individual consumer groups and for determining the
probability distribution of consumption values. They also show correlations to describe gas and service
water consumption as the basis of the total heat load of gas appliances and cold or hot water fixtures
Human subject experiments for investigating the combined effects of two local discomfort parameters
The purpose of HVAC systems is to provide a comfortable environment and set the conditions for efficient work. The enhancement of buildings´ energy performance puts emphasis on meeting the comfort requirements indoors, as the acceptable environments have to be provided from less energy. The comfort of occupants is determined by the heat exchange between his body and his indoor environment. Even if whole body thermal comfort is accomplished there may be local areas on the body where sensation of discomfort may arise. The paper contains the results of a human subject experiment that was carried out to study the combined effect of two, simultaneously present local discomfort parameters, namely radiant temperature asymmetry and warm feet. Results showed that local discomfort caused by warm feet was not present or was out ruled by the radiation from the cold wall surface
Analytic solutions of a two-fluid hydrodynamic model
We investigate a one dimensional flow described with the non-compressible
coupled Euler and non-compressible Navier-Stokes equations in Cartesian
coordinate systems. We couple the two fluids through the continuity equation
where different void fractions can be considered. The well-known self-similar
Ansatz was applied and analytic solutions were derived for both velocity and
pressure field as well. The solutions can be expressed with the error
functions.Comment: 11 pages, 4 figure
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