Wyniki wyszukiwania - Biblioteka Nauki

1

Middle Miocene siliciclastic sequences and architectures (southern east Carpathian „Molasse”, Romania) – depositional significance and tectonic forcing

100%

Popa M. , Anastasiu N.

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tom nr 387

164--166

2

Influence of the freight transnational rail liner service on the train scheduling in case of major corridors

80%

Popa M. , Raicu S. , Costescu D. , Rosca E.

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tom T. 8, z. 3

93--100

EN

In this paper we discuss several consequences of the freight transnational rail liner service on the rail corridor capacity. The Northern part of the IVth TEN-T corridor on Romanian territory has specific feature related to the passenger flows connecting important Romanian demographic and economic clusters, on one side, and on the other side, to its diagonal crossing aspect, from the Western border to the Constanta port, connecting the Central Europe countries to the Black Sea regions, which means that there are a lot of expectation in terms of this corridor rail capacity: this corridor will, be for a long time further, the single and first completed continuous upgraded and modernised rail corridor. Its utilization will necessarily be heterogeneously planned (meaning for passengers rapid trains and freight rapid trains, from domestic/internal market, but especially for external market of Romania). In this paper, we consider a simple mathematical model for the calculus of capacity in two different cases: for a homogeneous utilization, meaning that all trains have the same running speeds and for heterogeneous utilization, when the passenger trains have the higher speed and hence, the higher priority over the freight trains, even if some of them are freight transnational liner service. Special feature of liner rail service has to be considered (fixed schedule, no stops for passenger train advance). We draw several useful possible solutions to be considered in order to preserve the active corridor capacity, and to assure a smooth flow for the transnational liner services, which ultimately will enhance the rail attractiveness.

PL

W artykule przedyskutujemy wpływ serwisu międzynarodowego, kolejowego transportu towarów na przepustowość korytarzy. Północna część IV-tego korytarza TEN-T na terytorium Rumunii posiada specyficzne cechy oparte o przepływy pasażerów łącząc ważne demograficznie i ekonomicznie ośrodki Rumunii, z jednej strony, a z drugiej strony o diagonalny aspekt skrzyżowań ze wschodniej granicy do portu Konstanca, łącząc centralne kraje Europy z regionami Morza Czarnego, co oznacza wielkie oczekiwania związane z przepustowością korytarzy kolejowych. Rozważamy prosty matematyczny model obliczania przepływu w dwóch różnych przypadkach - dla jednorodnego wykorzystania, co oznacza, że wszystkie pociągi mają taka samą prędkość przebiegu oraz niejednorodne wykorzystanie, kiedy pociągi pasażerskie maja większą prędkość i stąd wyższy priorytet niż pociągi towarowe, nawet jeśli niektóre z nich są międzynarodowymi liniami towarowymi. Dla tej ostatniej sytuacji zostało narysowanych kilka użytecznych, możliwych rozwiązań rozpatrywanych w szczególności by chronić aktywny przepływ korytarzy, oraz by zabezpieczyć płynny przepływ dla serwisu linii transnarodowych, które w końcu uwydatnią atrakcyjność kolei.

3

Digitized Database of Old Seismograms Recorder in Romania

80%

Paulescu D. , Rogozea M. , Popa M. , Radulian M.

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2016

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tom Vol. 64, no. 4

963--977

EN

The aim of this paper is to describe a managing system for a unique Romanian database of historical seismograms and complementary documentation (metadata) and its dissemination and analysis procedure. For this study, 5188 historical seismograms recorded between 1903 and 1957 by the Romanian seismological observatories (Bucharest-Filaret, Foc- şani, Bacău, Vrincioaia, Câmpulung-Muscel, Iaşi) were used. In order to reconsider the historical instrumental data, the analog seismograms are converted to digital images and digital waveforms (digitization/vectorialisation). First, we applied a careful scanning procedure of the seismograms and related material (seismic bulletins, station books, etc.). In a next step, the high resolution scanned seismograms will be processed to obtain the digital/numeric waveforms. We used a Colortrac Smartlf Cx40 scanner which provides images in TIFF or JPG format. For digitization the algorithm Teseo2 developed by the National Institute of Geophysics and Volcanology in Rome (Italy), within the framework of the SISMOS Project, will be used.

4

Transit time through the border-crossing points: the case study of the EU’s road BCP with Moldavia

71%

Popa M. , Rosca E. , Rusca F. , Costescu D. , Dragu V.

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tom T. 11, z. 2

79--89

EN

This paper provides an overview on the ACROSSEE project (funded by the ERDF under the SEE program), its objectives, general methodology, and the main results. Moreover, the main survey results are presented as they relate to the Romanian road and rail border-crossing points (BCPs) with the Eastern neighbourly country, Moldavia. Results include the actual status of the road BCP, surveys on exiting and entering traffic flows, answers to specific questionnaires of the truck and car drivers in relation with origin-destination of the trips, average waiting time in queue and time required for procedures and controls. Discussion on the mathematical modelling is presented and a provisional simulation model is developed, using ARENA software. The early results are used in order to introduce the need for future assessment of the transit time in a road BCP, with the main purpose: the substantiation of the strategic and operational actions for improvements in trade and transport crossings of the EU borders, considering the need for more vigilant and less time-consuming checks at the outside borders of the EU.

FR

Ce papier donne un aperçu sur le projet ACROSSEE (financé par le FEDER dans le cadre du programme SEE), ses objectifs, la méthodologie générale, et les principaux résultats; en outre,les principaux résultats de l'enquête sont présentés en rapport avec les points routiers et ferroviaires de passage frontaliers (PPF) entre Roumanie et Moldavie. Les résultats comprennent l'état actuel du PPF de la route; enquêtes sur la sortie et l'entrée des flux de trafic; réponses aux questionnaires spécifique des chauffeurs de camions et de voitures en relation avec l'origine-destination desvoyages; le temps moyen d'attente et le temps nécessaire pour accomplir les procedures du contrôle. Discussion sur la modélisation mathématique est présentée et un modèle de simulation prévisionnel est développé, en utilisant le logiciel ARENA. Les premiers résultats sont utilisés afin d'introduire la nécessité d'une évaluation ultérieure du temps de transit par un PPF routier, ayant comme objectif principal la justification des actions stratégiques et opérationnelles pour des améliorations dans le commerce et le transport franchissant les frontières de l'UE, compte tenu de la nécessité d'un contrôle plus vigilant et habituellement long à la frontière extérieure de l'UE.