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Vira ?npilogova,Svitlana Botvinovska,Alla Zolotova,Hanna Sulimenko
Pág. 39 - 48
The research focuses on solving the problems, related to modeling the second-order surfaces (quadrics), the determinant of which includes tangent cones. All research was performed by the paradigm of using constructive methods of creation of algorithms. T...
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Ye. D. Kim,V. H. Sychenko
Pág. 72 - 83
The article is dealt with the selecting methodology of overvoltage arresters for DC traction line.
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Ye. D. Kim,V. H. Sychenko,V. L. Kalmykov
Pág. 72 - 76
On the base of numeric investigations on mathematical models of stationary electric field the basic electric performances of insulating suspensions from porcelain and polymeric insulators for contact nets of alternating and direct current are compared.
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Yu. P. Honcharov,M. V. Panasenko,V. M. Kozachok,V. V. Zamaruiev,V. V. Ivakhno,S. Yu. Kryvosheiev,O. I. Semenenko
Pág. 42 - 48
The power supply system of a contact network using a longitudinal line with points of communication without transformer is considered. The approach allowing to facilitate power filters and the way of switching of in-series connected semiconductor switche...
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Michal Glowacz, Marek Kaniewski, Artur Rojek
Pág. 1967 - 1976
In this paper the 3 kV power supply system of Polish high-speed lines is described. Basic OCL parameters and test results of current collection quality is presented. One of the basic parameters limiting the maximum service speed on a given line is the pa...
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D. V. Ustymenko
Pág. 78 - 86
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Kyung-Min Na, Kiwon Lee, Seung-Kwon Shin and Hyungchul Kim
An electric railway vehicle is supplied with electricity by an OCL (Overhead Contact Line) through the contact strip of its pantograph. This transmitted electricity is then used to power the electrical equipment of the railway vehicle. This contact strip...
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Marc A. Rosen, Doru A. Nicola, Cornelia A. Bulucea and Daniel C. Cismaru
Some aspects are illustrated of energy conversion processes during the operation of electric railway vehicles with traction induction motors, in order to support transport systems? sustainability. Increasing efforts are being expended to enhance the sust...
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Diego Iannuzzi, Enrico Pagano and Pietro Tricoli
The paper aims to contribute to the use of electric double layer capacitor (EDLC) sets for boosting voltages of contact lines in urban and suburban railway traction systems. Different electrical configurations of contact lines are considered and investig...
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U. P. Honcharov,N. V. Panasenko,V. V. Zamuruiev,V. V. Ivakhno,S. U. Krivosheyev,U. V. Chursina,M. V. Danilov,V. H. Sychenko,V. U. Ivanov
Pág. 82 - 89
The system under consideration is the PDU contact network of high-voltage direct current from the longitudinal line at the voltage of the order of units of kHz allowing to reduce drastically the mass of power electromagnetic elements in converters and to...
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Budi Hadi Narendra,Harris Herman Siringoringo,Andi Gustiani Salim
Pág. 301 - 307
This study aimed to evaluate the water quality of mangrove ecosystem indegraded mangrove forest areas, either already or not rehabilitated. The research was conducted at the Ciasem protected forest areas, BKPH Ciasem Pamanukan (RPH Poponcol, RPH Bobos, a...
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Chang-Wan Ha, Sungho Jung, Jinseong Park and Jaewon Lim
Magnetic levitation can reduce particulate contamination that occurs during wafer transportation in the semiconductor manufacturing process. This technology radically eliminates contact between the wafer and the transport system, reducing friction, wear,...
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Ioan Petrovai, Otto Todor-Boer, Adriana Vulpoi, Leontin David and Ioan Botiz
In this study, we have employed a film deposition technique based on convective forces acting at the triple air?solution?substrate contact line to tune the rate of solvent evaporation and, thus, to exert control over the morphology of the resulting mixed...
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Ruodan Yu, He Ma, Jun Zhang and Yan Niu
In order to study the derailment process and dynamic performance-changing rules of vehicles on a curved track, a method of calculating critical derailment speed is proposed, which is the progressive trial method. In terms of their theoretical basis and c...
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Yuanlin Jing, Feng Guo, Yiping Wang and Qunwu Huang
Due to the continuity and complexity of chemical systems, piping and operating conditions will have a significant effect on the on-line continuous weighing of materials inside process equipment. In this paper, a mathematical model of the weighing system ...
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Bangfu Wang and Juan Song
Based on the contact angle prediction model of a traditional square column structure, the prediction models for wettability of a parallelogram square column structure (PSCS) on polymethyl methacrylate (PMMA) surface prepared by femtosecond laser were est...
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Richard Malm, Rikard Hellgren and Jonas Enzell
Dams located in cold areas are subjected to large seasonal temperature variations and many concrete dams have cracked as a result. In the 14th International Commission on Large Dams (ICOLD) Benchmark Workshop, a case study was presented where contributor...
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Hsin-Yu Wu, Chia-Hsun Hsu, Shui-Yang Lien and Yeu-Long Jiang
In this study, metal films are fabricated by using an in-line reactive direct current magnetron sputtering system. The aluminum?titanium (AlTi) back contacts are prepared by changing the pressure from 10 mTorr to 25 mTorr. The optical, electrical and str...
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Inmaculada Gallego Giner, Ana Rivas Alvarez, Santos Sánchez-Cambronero García-Moreno, Julián Lajara Camacho
Pág. 357 - 365
The aim of the paper is to present a numerical model for a ballasted railway track that includes the dynamic effect of a moving train load and predicts the values of the vertical stiffness of the infrastructure. This model is therefore deemed to be a too...
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Bertrand Collin, Pierre Carreaud, Hervé Lançon
Pág. 1865 - 1874
Railways managers and owners have to face several challenges to ensure commuters? safety and durable operation of their costly infrastructures and buildings which contribute tremendously to economic development. Whatever brand new or ancient railways inf...
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