scholarly journals The Method of Assessment of Transport Safety / Metoda Oceny Bezpieczeństwa Procesu Transportowego

2012 ◽  
Vol 21 (1) ◽  
pp. 99-112
Author(s):  
Piotr Bojar ◽  
Maciej Woropay ◽  
Mirosław Szubartowski ◽  
Michał Bacior
Keyword(s):  
Water Transport ◽  
Transport Process ◽  
Social Engineering ◽  
Transport Systems ◽  
Time Interval ◽  
Engineering Systems ◽  
Transport Safety ◽  
Technological Object ◽  
Method Of Assessment

Abstract This article introduces classification of transport systems into land transport systems (road and rail) as well as land and water transport systems (inland and sea), depending on the type of environment in which these systems carry out their tasks. Such systems fall under the class of social engineering systems of the Man - Technological Object - Environment (M - TO - E) type. Such systems are influenced by forcing factors, leading to changes in their states. Such factors may be divided into operational, outside and anthropotechnical and they influence the system on various levels, including degradation of the degree of its safety. The article attempts to evaluate the safety of the operation of transport systems on the basis of the evaluation of the safety of the transport process carried out over a defined time interval Δt.

scholarly journals Influence of Malfunctions of Selected Bus Subsystems on Bus Transportation Safety

2016 ◽  
Vol 39 (1) ◽  
pp. 79-96
Author(s):  
Piotr Bojar ◽  
Maciej Woropay ◽  
Klaudiusz Migawa
Keyword(s):  
Water Transport ◽  
Transport Process ◽  
Social Engineering ◽  
Transport Systems ◽  
Transportation Safety ◽  
Time Interval ◽  
Engineering Systems ◽  
Technological Object ◽  
Bus Transportation

Abstract This article introduces division of transport systems into land transport systems (road and rail) as well as land and water transport systems (inland and sea), depending on the type of environment in which these systems carry out their tasks. Such systems comprise the class of social engineering systems of the Man – Technological Object – Environment (M – TO – E) type. Such systems are influenced by forcing factors, leading to changes in their condition. Such factors may be divided into operational, external and anthropotechnical and they cause the degradation of the system on various levels, including a decrease of the degree of its safety. The article attempts to evaluate the safety of the operation of transport systems on the basis of the evaluation of the safety of the transport process carried out over a defined time interval Δt. The evaluation of the safety of the implemented transport process was prepared on the basis of a set of calculated index values determined depending on the type of transport.

scholarly journals Analysis of assessment criteria for selected systems of transport means operation

2018 ◽  
Vol 182 ◽  
pp. 02003
Author(s):  
Łukasz Muślewski ◽  
Leszek Knopik ◽  
Bogdan Landowski ◽  
Oleh Polishchuk
Keyword(s):  
Time Moment ◽  
Transport Systems ◽  
Time Interval ◽  
Sociotechnical System ◽  
Human Driver ◽  
System Functioning ◽  
Technical Systems

The problems discussed in the study are connected with evaluation of complex technical systems functioning, in particular, transport systems. It was assumed that evaluation of their functioning depends on fulfilment degree of selected criteria. Therefore, it is important to determine a set of criteria including their type, number and importance. Since the research object is a public city transport system considered to be a sociotechnical system of the type: human (driver) –machine (vehicle) and the environment <H-M-E>, the criteria to be used for the assessment must include behavior of humans, operation of transport means, and the environmental impact. Thus, selection and determination of importance of significant, time variable, measurable and independent characteristics whose values, in a given time moment or a given time interval, define fulfillment degree of the criteria provide the basis for evaluation of such systems functioning. The quality of technical systems functioning in time is assessed on the basis of the criteria fulfilment degree or comparison and classification of different systems of the same type. It needs to be emphasized that the choice of optimal methods for selection of relevant criteria and determination of their impact on the analyzed system functioning is the research subject of study.

ECONOMIC ASPECTS OF WATER TRANSPORT SAFETY

2020 ◽  
Author(s):  
Владимир Петрович Марков
Keyword(s):  
Water Transport ◽  
Safety System ◽  
Economic Aspects ◽  
Existing Problems ◽  
Transport Safety

В связи с нововведениями обостряются существующие проблемы безопасности водного транспорта. Обращается внимание на тот факт, что существующая система безопасности водного транспорта не учитывает географический, технологический и отраслевой факторы. Реализация концепции транспортной безопасности на водном транспорте взывает немало вопросов, определяющих существование отрасли. In connection with the innovations, the existing problems of the safety of water transport are aggravated. Attention is drawn to the fact that the existing water transport safety system does not take into account geographical, technological and sectoral factors. The implementation of the concept of transport security in water transport raises many questions that determine the existence of the industry.

scholarly journals Sustainable Transport in the Danube Region

2021 ◽  
Vol 13 (12) ◽  
pp. 6797
Author(s):  
Peter Mako ◽  
Andrej Dávid ◽  
Patrik Böhm ◽  
Sorin Savu
Keyword(s):  
Water Transport ◽  
Fossil Fuels ◽  
Environmentally Friendly ◽  
Road Transport ◽  
Transport Systems ◽  
Main Question ◽  
Inland Water ◽  
Danube Region ◽  
Inland Water Transport

Sustainability of transport systems is a key issue in transport. The main question is whether high levels of road and railway transport in areas along navigable waterways is an effective solution for this issue. The Danube waterway is an example. Generally, it is not observed that traffic performance is not as high as on the Rhine. This paper deals with the revelation of the available capacity of this waterway based on approximation functions and their comparison with real transport performances. This methodology points to the level of use of waterways. The connection of this model with the production of fossil fuels creates a basis for a case study. The case study in this paper offers a possibility for a sustainable and environmentally friendly transition from road transport to inland water transport on the example of specific transport routes. The main contribution of this paper is a presentation of the application of sustainable models of use transport capacity to increase the share of environmentally friendly and sustainable inland water transport. The conclusion based on the case study and materials is that the available capacity of inland water transport on the Danube could support the transition of traffic performances to sustainable and environmentally friendly means of transport.

Photoacoustic monitoring of water transport process in calcareous stone coated with biopolymers

2016 ◽  
Vol 122 (12) ◽  
Author(s):  
J. May-Crespo ◽  
B. O. Ortega-Morales ◽  
J. C. Camacho-Chab ◽  
P. Quintana ◽  
J. J. Alvarado-Gil ◽  
...  
Keyword(s):  
Water Transport ◽  
Transport Process

scholarly journals STATISTICAL PROBABILITY EVALUATION OF OPERATING ITS

Transport ◽  
2010 ◽  
Vol 25 (2) ◽  
pp. 163-170 ◽  
Author(s):  
Adolfas Baublys ◽  
Aldona Jarašūnienė
Keyword(s):  
Analytical Description ◽  
Statistical Information ◽  
Transport Systems ◽  
Statistical Probability ◽  
Intelligent Transport ◽  
Loop Detectors ◽  
Probability Evaluation ◽  
Control Technologies ◽  
And Control

Intelligent Transport Systems (ITS) work with information and control technologies providing the core of ITS functions. Some of these technologies like loop detectors are well known to transportation professionals. However, there are a number of less familiar technologies and system concepts that are keys to ITS functions. Although information and control technologies act as a technical core of ITS, human factors also remain vitally important and potentially very complex issues. The process of operating ITS is influenced by a number of random factors. Along with an assessment of dependence upon separate random factors, the classification of those in the whole hierarchical structure of operating ITS is presented. Statistical information on operating ITS is renewed and replenished in the course of time. With the growth of information amounts, the costs of storing them also increase. Therefore, the article presents relevant algorithms for obtaining required statistical assessments with the least statistical information. It is deduced that while modelling the process of operating ITS, an analytical description of random factors applying non‐parametric assessment is suitable.

Bicarbonate Transport Systems in the Intestine of the Seawater EEL

1990 ◽  
Vol 150 (1) ◽  
pp. 381-394 ◽  
Author(s):  
MASAAKI ANDO ◽  
M. V. SUBRAMANYAM
Keyword(s):  
Latent Period ◽  
Water Transport ◽  
Basolateral Membrane ◽  
Transport Systems ◽  
Bicarbonate Transport ◽  
Ph Stat ◽  
Stat Method

Utilizing a pH-stat method, the rates of mucosal and serosal alkalinization were measured separately in the seawater eel intestine. These two rates were dependent on contralateral HCO3− concentration and were inhibited by contralateral application of DIDS, an inhibitor of HCO3− transport, indicating that the mucosal and serosal alkalinization are due to HCO3− secretion and absorption, respectively. The mucosal alkalinization was enhanced after inhibiting Na+/K+/Cl− cotransport by treatment with bumetanide, furosemide or Ba2+, with a latent period of more than lOmin, suggesting that HCO3− absorption from mucosa to serosa depends on Na+/K+/Cl− cotransport. The serosal alkalinization caused by HCO3− absorption was completely abolished after mucosal application of bumetanide. After pretreatment with bumetanide, mucosal omission of Cl− halved the enhanced rate of mucosal alkalinization, and Na+ omission had no effect on it; this indicates that the exit of HCO3− into the lumen depends on luminal Cl−, i.e. on the existence of the usual C1−/HCO3− exchange on the brushborder membrane. When serosal Na+ was removed under the same conditions, mucosal alkalinization was reduced, indicating that HCO3− entry from the serosal fluid depends on Na+. Serosal omission of Cl− did not reduce mucosal alkalinization. In addition, serosal alkalinization was enhanced by serosal removal of Na+ but not of Cl−. These results suggest that there is a Na+/HCO3− cotransport on the basolateral membrane. A possible model for HCO3− transport systems in the seawater eel intestine is proposed, and a possible role for these transport systems is discussed in relation to Na+, Cl− and water transport.

scholarly journals Research of the economic risk factors of the functioning of the Ukrainian transport system

2019 ◽  
Vol 67 ◽  
pp. 04002
Author(s):  
Nataliia Bogdan ◽  
Sergii Pogasiy ◽  
Iryna Pysareva ◽  
Iuliia Krasnokutska
Keyword(s):  
Risk Factors ◽  
Transport System ◽  
Comprehensive Evaluation ◽  
External Environment ◽  
The State ◽  
Transport Systems ◽  
Economic Risk ◽  
Regional Transport ◽  
Resources And Capabilities

The purpose of this article is to research and to evaluate the risk factors of the transport system of Ukraine. The article examines the state of the transport system of Ukraine. The classification of specific risks of the transport system has been developed in two areas: the nature of occurrence and in relation to the transport system. The conceptual model of comprehensive research of the factors of economic risk has been proposed. It includes 4 modules. The approaches to the identification of the factors and indicators for assessing the economic risks of transport systems at the national and regional levels have been formed. In the result the comprehensive evaluation of the risk factors of regional transport system of Ukraine has been carried out. Identification of risks at the national and regional transport system is necessary for the effective strategy of the industry development through quantitative risk analysis which enables to give a real assessment of their own resources and capabilities in relation to the state (and needs) of the external environment. The rational choice of the strategies from a variety of options should be made on this basis.

scholarly journals Data-Driven Analysis of Bicycle Sharing Systems as Public Transport Systems Based on a Trip Index Classification

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4315
Author(s):  
Mark Richard Wilby ◽  
Juan José Vinagre Díaz ◽  
Rubén Fernández Pozo ◽  
Ana Belén Rodríguez González ◽  
José Manuel Vassallo ◽  
...  
Keyword(s):  
Transport System ◽  
Public Transport ◽  
Transport Systems ◽  
Mathematical Framework ◽  
The Public ◽  
Traffic Lights ◽  
Public Transport System ◽  
Specific Analysis ◽  
Last Mile

Bicycle Sharing Systems (BSSs) are exponentially increasing in the urban mobility sector. They are traditionally conceived as a last-mile complement to the public transport system. In this paper, we demonstrate that BSSs can be seen as a public transport system in their own right. To do so, we build a mathematical framework for the classification of BSS trips. Using trajectory information, we create the trip index, which characterizes the intrinsic purpose of the use of BSS as transport or leisure. The construction of the trip index required a specific analysis of the BSS shortest path, which cannot be directly calculated from the topology of the network given that cyclists can find shortcuts through traffic lights, pedestrian crossings, etc. to reduce the overall traveled distance. Adding a layer of complication to the problem, these shortcuts have a non-trivial existence in terms of being intermittent, or short lived. We applied the proposed methodology to empirical data from BiciMAD, the public BSS in Madrid (Spain). The obtained results show that the trip index correctly determines transport and leisure categories, which exhibit distinct statistical and operational features. Finally, we inferred the underlying BSS public transport network and show the fundamental trajectories traveled by users. Based on this analysis, we conclude that 90.60% of BiciMAD’s use fall in the category of transport, which demonstrates our first statement.

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