Local algorithm to optimize the cost of tree-pipe Networks / Algoritm local pentru optimizarea costului reţelelor arborescente de conducte

21 Oct Local algorithm to optimize the cost of tree-pipe Networks / Algoritm local pentru optimizarea costului reţelelor arborescente de conducte

Romanian Academy of Technical Sciences (ASTR) 2012 Minimizing the cost of tree-like pipe networks at constant dissipated power follows two general laws: the “cost per dissipated watt” ratio is the same for all pipes; in each node, defining along the pipes vectors equal to a...
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21 Oct Considerations on the modernization of Bucharest subway’s underground water network / Consideraţii privind modernizarea reţelei de apă a metroului din Bucureşti

Romanian Academy of Technical Sciences (ASTR) 2012 In this paper, several pressing issues on the state and functioning of the water supply network in Bucharest subway (SAAR – Metrorex). Following evaluation and analysis of several technical and economic options, enabling a reliable and efficient as...
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21 Oct Citizen-sensor, a modern concept in developing municipal companies / Cetăţean-senzor un concept modern în dezvoltarea companiilor municipale

Romanian Academy of Technical Sciences (ASTR) 2012 This paper describes the development of web-GIS solutions where urban residents could be involved in decision-support process of water companies, in order to reduce water losses by collecting information directly from citizens.
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21 Oct Safety and environmental aesthetics in Bucharest urban light – a current must / Securitatea şi estetica mediului luminos urban din Bucureşti – o necesitate actualǎ

Romanian Academy of Technical Sciences (ASTR) 2012 This paper treats urban luminous environment, traffic security, lighting pollution, unsuitable luminaries, inadequate LED, street neighboring vegetation, transition zones, also offering rectifying modern solutions necessary for an European level adequate lighting in the capital of Romania.
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21 Oct Pollution by noise and vibrations from surface transportation and construction works in urban areas / Poluarea prin zgomote şi vibraţii provenite din transportul terestru şi lucrările de construcţii în spaţii urbane

Romanian Academy of Technical Sciences (ASTR) 2012 This paper is – both through results and methods of investigation, evaluation and monitoring of the degree of impact on population – a summary intended to highlight the contribution of urban pollution simultaneous noise and vibration, with specific...
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21 Oct Using the entropy production to evaluate the combustion efficiency of a gas mixture

Romanian Academy of Technical Sciences (ASTR) 2012 An evaluation method of the combustion efficiency for usual gas mixtures is done by calculating the entropy production. The fuel and the oxidizer are premixed. The influence of pressure is also considered. The expected pollutant is NO
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21 Oct Research on the influence of brake mechanism thermal stresses on traffic safety / Cercetări privind influența solicitărilor termice ale mecanismului de frânare asupra siguranței circulației

Romanian Academy of Technical Sciences (ASTR) 2012 This paper presents the results of the thermal stress researches for motor vehicle disc brakes, and their influence over the traffic safety. Starting from the present stage of the specific braking regimes for the disk brakes, the results...
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21 Oct Modern developments of the hydraulic transmissions in automotive technology

Romanian Academy of Technical Sciences (ASTR) 2012 The paper presents some recent achievments in the field of the electrohydraulic automated transmissions for automotive systems with strong environmental impact. The correlations between the structure, and the performances of the car systems are evaluated.
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21 Oct Relations for the calculation critical tension in mechanical structures with cracks / Relaţii pentru calculul tensiunilor critice ale structurilor mecanice cu fisuri

Romanian Academy of Technical Sciences (ASTR) 2012 Analyzing the stress concentration at the crack tip a relationship for deterioration have been obtained taking into account the nonlinear behaviour of the material.
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21 Oct About the application of the finite difference method at the problem defined on the double conex domains

Romanian Academy of Technical Sciences (ASTR) 2012 It is presented the analyses of a plane slab subjected to an uniform load, with the help of the finite differences numerical method. The problem, that summarizes at determining the stresses in certain points of the slab (assigned...
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