2015, VOLUME 16 #4. "TRANSPORT AND TELECOMMUNICATION". ЖУРНАЛ ИЗДАТЕЛЬСТВА TSI, ISSN 1407-6160, ISSN 1407-6179 | TSI

Your question

Будем рады дать ответы на любые ваши вопросы!

2015, VOLUME 16 #4. "TRANSPORT AND TELECOMMUNICATION". ЖУРНАЛ ИЗДАТЕЛЬСТВА TSI, ISSN 1407-6160, ISSN 1407-6179

RELIABILITY EVALUATION OF THE CITY TRANSPORT BUSES UNDER ACTUAL CONDITIONS 

Joanna Rymarz1, Andrzej Niewczas2, Jozef Stoklosa3

1Lublin University of Technology, Lublin, Poland
Ph.: 81 538 4259, e-mail: j.rymarz@pollub.pl
2Motor Transport Instytut, Warsaw, Poland
Ph.: 513 023 906, e-mail: niewczas-andrzej@wp.pl
3University of Economics and Innovations in Lublin, Lublin, Poland
Ph.: +48 81749 32 43, e-mail: jozef.stoklosa@wsei.lublin.pl

    The purpose of this paper was to present a reliability comparison of two types of city transport buses. Case study on the
example of the well-known brands of city buses: Solaris Urbino 12 and Mercedes-Benz 628 Conecto L used at Municipal Transport
Company in Lublin was presented in details. A reliability index for the most failure parts and complex systems for the period of time
failures was determined. The analysis covered damages of the following systems: engine, electrical system, pneumatic system, brake
system, driving system, central heating and air-conditioning and doors. Reliability was analyzed based on Weibull model. It has been
demonstrated, that during the operation significant reliability differences occur between the buses produced nowadays.
Keywords: reliability, Weibull model, city transport buses

“BUS LANE WITHIN THE AREA OF INTERSECTION” METHOD FOR BUSES PRIORITY ON THE INTERSECTIONS 

Ihor Vikovych1, Roman Zubachyk2

Department of Transport technology
Lviv National Polytechnic University
Lviv, Stepana Bandery street, 12, Ukraine, 79013
E-mails: 1wikovigor@gmail.com; 2roman.zubachyk@gmail.com

The primary objective of this article is to formalize the “special bus lanes within the area of intersection” method that allows
providing buses with space-time priority at signalized intersections (mostly of the isolated type), including those with no more than
two traffic lanes in each direction at the approaches to the intersection. The article establishes the limits for efficient application of
this method, and describes the results of a simulation experiment conducted in the VISSIM environment to investigate the functioning
of the method on an actual intersection. The most critical phase of implementation of this method is to determine the optimum length
of the special bus lane at the approach to the intersection. The optimum length of special bus lanes at the approaches to isolated or
coordinated intersections is determined based on the maximum length of queued vehicles which is computed using the simulation
models developed in the Objective-C language. The article covers the basic characteristics of those models, their structure and building
principles, and also provides the model validation results. Simulation models can be used both for determination of the optimum
length of special bus lanes at the approaches to signalized intersections and for analysis of intersection performance based on the
maximum length of queued vehicles.
Keywords: bus lanes, bus signal priority, priority at the intersection, maximum length of queued vehicles

KPI BUILDING BLOCKS FOR SUCCESSFUL GREEN TRANSPORT CORRIDOR IMPLEMENTATION 

Gunnar Prause1, Meike Schröder2

1Tallinn University of Technology
School of Economics and Business Administration
Akadeemia Tee 3, 12618 Tallinn, Estonia
Gunnar.Prause@ttu.ee
2Hamburg University of Technology
Institute of Business Logistics and General Management
Am Schwarzenberg-Campus 4, 21073 Hamburg, Germany
Meike.Schroeder@tuhh.de

The green transport corridor concept represents a cornerstone in the development of integrated and sustainable transport
solutions. Important properties of green corridors are their transnational character and their high involvement of large numbers of
public and private stakeholders, including political level, requiring sophisticated approaches for implementation, management and
governance. The current scientific discussion focusses on Key Performance Indicators (KPI) for monitoring and management of green
transport corridor performance emphasizing the operational aspects.
The green corridor balanced scorecard approach tried to mitigate the strategic weakness of KPI concept by integrating
cooperative and long-term views in order to come closer to a comprehensive green corridor control system. Until now all discussed
KPI sets are too small and narrow for a successful implementation of green corridors so there is a need for the development of an user
oriented model for green corridor control systems based on building blocks integrating existing KPI sets.
The building block approach for implementation has been successfully used for implementation and simulation in supply
chain management. Based on these results the paper will present a holistic control system for successful implementation of green
transport corridors based on building blocks integrating recent results about KPIs and balanced scorecards approaches. The research
will empirically be verified by empirical results from European green corridor projects.
Keywords: green transport corridors, management control systems, networks, key performance indicators, corridor governance

ANALYSIS OF THE LOGISTICS INTERMEDIARIES CHOICE METHODS IN THE SUPPLY CHAINS 

Valery Lukinskiy1, Vladislav Lukinskiy2

1National Research University Higher School of Economics (HSE)
St. Petersburg, Russia
Ph.: 007(812)644-59-11(+61517), e-mail: lukinskiy@mail.ru
2National Research University Higher School of Economics (HSE)
St. Petersburg, Russia
Ph.: 007(812)644-59-11(+61517), e-mail: vladas27@mail.ru

The increase of the supply chains efficiency requires optimization of all types of logistic operations and functions. One of
such functions is the choice of intermediaries (carriers, freight forwarders, suppliers, service enterprises etc.) and, according to some
specialists, it is a major strategic decision in management supply chains. The methods of choosing the logistic intermediaries are
considered in many works, however, some questions remain debatable. The article discusses the analytical and expert approaches
which serve as a basis to choose the intermediaries; along with it, in the article a comparative evaluation of choice expert methods is
done: point-rating assessment, analytic hierarchy process and the general algorithm for selecting; the conclusions have been drawn
about the applicability of each method.
Keywords: choice of intermediaries, point-rating assessment, analytic hierarchy process (AHP), general algorithm for selecting
intermediaries

OIL POLLUTION OF THE SOUTHEASTERN BALTIC SEA BY SATELLITE REMOTE SENSING DATA AND IN-SITU MEASUREMENTS 

Elena V. Bulycheva1, Aleksander V. Krek1,2, Andrey G. Kostianoy3,4,5, Aleksander V. Semenov5, Aleksandar Joksimovich6

1Atlantic Branch of P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Kaliningrad, Russia, Prospekt Mira 1
E-mail: bulycheva.lena@gmail.com
2Immanuel Kant Baltic Federal University
Kaliningrad, Russia, Aleksandra Nevskogo Str. 14, Build. 2
E-mail: av_krek_ne@mail.ru
3P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Moscow, Russia, Nakhimovsky Pr. 36,
E-mail: kostianoy@gmail.com
4GeoHydrodynamics and Environment Research, University of Liege
Liege, Belgium, Sart Tilman, B5
E-mail: kostianoy@gmail.com
5S.Yu. Witte Moscow University
Moscow, Russia, Second Kozhukhovsky Pr. 12, Build. 1
E-mail: semen7777@gmail.com
6Institute of Marine Biology, University of Montenegro
Kotor, Montenegro, P.Box 69
E-mail: acojo@ac.me

Results of operational satellite monitoring of oil pollution of the sea surface together with in-situ measurements of the oil
products concentration in the water column for the first time allowed to establish relation between the surface pollution originated
from ships, and the general characteristics of spatial and temporal distribution of oil products in the water column in the Southeastern
Baltic Sea. Areas with heightened concentrations of oil products in the surface and bottom layers were determined for the study area.
The main directions of the contamination propagation are agreed with the main direction of annual mean transport of substances in
the Gdansk Basin.
Keywords: the Southeastern Baltic Sea, oil pollution, satellite monitoring, field measurements, geochemical barriers, D-6 oil platform

CONDITION MONITORING OF OPERATING PIPELINES WITH OPERATIONAL MODAL ANALYSIS APPLICATION

Aleksey Mironov1, Pavel Doronkin1, Aleksander Priklonsky1, Igor Kabashkin2

1D un D centrs
7 Margrietas street, Riga, Latvia
e-mail: info@ddcentrs.lv
2Transport and Telecommunication Institute
1 Lomonosova street, Riga, LV-1019, Latvia
e-mail: kiv@tsi.lv

In the petroleum, natural gas and petrochemical industries, great attention is being paid to safety, reliability and
maintainability of equipment. There are a number of technologies to monitor, control, and maintain gas, oil, water, and sewer pipelines.
The paper focuses on operational modal analysis (OMA) application for condition monitoring of operating pipelines. Special focus is
on the topicality of OMA for definition of the dynamic features of the pipeline (frequencies and mode shapes) in operation. The
research was conducted using two operating laboratory models imitated a part of the operating pipeline. The results of finite-element
modeling, identification of pipe natural modes and its modification under the influence of virtual failure are discussed. The work
considers the results of experimental research of dynamic behavior of the operating pipe models using one of OMA techniques and
comparing dynamic properties with the modeled data. The study results demonstrate sensitivity of modal shape parameters to
modification of operating pipeline technical state. Two strategies of pipeline repair – with continuously condition-based monitoring
with proposed technology and without such monitoring, was discussed. Markov chain reliability models for each strategy were
analyzed and reliability improvement factor for proposed technology of monitoring in compare with traditional one was evaluated. It
is resumed about ability of operating pipeline condition monitoring by measuring dynamic deformations of the operating pipe and
OMA techniques application for dynamic properties extraction.
Keywords: pipelines, reliability, damages detection, operational modal analysis, modelling of dynamic deformations

PROPOSAL OF LANDFILL SITE MODEL IN THE PARTICULAR TERRITORY  

Ondrej Stopka 1, Ivana Simková 2

1Department of Transport and Logistics, Institute of Technology and Businesses in Ceske Budejovice
Okruzni 517/10, 370 01 Ceske Budejovice, Czech Republic
Ph.: (+420) 387 842 188
E-mail: stopka@mail.vstecb.cz
2Department of Road and Urban Transport, The Faculty of Operation and Economics of Transport and
Communications, University of Zilina, Univerzitna 1, 010 26 Zilina, Slovak Republic
Ph.: (+421) 41 513 3523
E-mail: ivana.simkova@fpedas.uniza.sk

Nowadays, waste logistics is a relevant element within the worldwide logistics system. This paper is focused on the proposal of the
appropriate model of landfill site for disposal of municipal waste. This issue refers to waste logistics in urban areas. In this regard, three different
alternative models of landfill sites are considered. Landfill site model can significantly influence the waste management productivity and
effectiveness of the enterprise. In the paper, one of the decision-making problem methods is utilized. This particular method enables to assess
each model of landfill site in relation to each of the specified criterion and order the models according to the achieved results.
Keywords: Landfill site, waste logistics, municipal waste, decision-making problem, urban area
 

ANALYSIS OF PACKETS DELAY IN WIRELESS DATA NETWORKS  

Aleksandr Krivchenkov1, Dmitry Sedykh1,2

1Transportation and Telecommunication Institute
Lomonosova str. 1, LV-1019, Riga, Latvia
Ph.: +371 29210689, e-mail: krivcenkovs.a@tsi.lv
2Karolin SIA, Riga, Latvia
Ph.: +371 29473411, e-mail: dmitrijs.sedihs@inbox.lv

The networks with wireless links for automation control applications traffic transmission when packets have small size and
application payload is predictable are under consideration. Analytical model for packets delay on their propagation path through the
network is proposed. Estimations for network architectures based on WiFi and Bluetooth wireless technologies are made. The
specifications for physical layer 802.11 a/b/g/n and 802.15.1 are under consideration. Analytical and experimental results for delivered
network bandwidth for different network architecture, traffic structure and wireless technologies were compared to validate that basic
mechanisms are correctly taken into account in the model. It is shown that basic effects are taken into account and further accuracy
“improvement” of the model will give not more than 5%. As a result that is important for automation control applications we have
reliably received the lowest possible level for packets delay in one wireless link. For 802.11 it is of order of 0.2 ms, for 802.15.1 it is
1.25 ms and is true when application packet can be transferred by one data frame.
Keywords: WLAN, WiFi, Bluetooth, 802.11, 802.15.1, packet delay
 

RESEARCH OF THE EFFICIENCY OF THE WIRELESS POWER TRANSFER WITH THE EMPLOYMENT OF DD INDUCTANCE COILS  

Alexander Krainyukov 1, Igor Lyaksa 2, Rodions Saltanovs 3

1,2Transport and Telecommunications Institute
Riga , Latvia, Lomonosova iela 1, LV-1019
1Ph.:+371 67100634, e-mail: Krainukovs.A@tsi.lv
2 Ph.:+371 67100634, e-mail: ljaksa.i@tsi.lv
3RS Factor
Ogre, Latvia
Ph.: +371 27178331, e-mail: r.saltanovs@transfoelectric.com

The paper is devoted to using of DD inductance coils for the wireless power transfer. The aim of the given research is to
determine influence of the parameters of resonance transformer on the efficiency of the wireless power transfer with the use of the
DD inductance coils. Experimental installation of the wireless power transfer by a resonance inductive method was constructed.
Experiments were performed with it help. Research results show influence of the distance between the coils of inductance, of the
resonance transformer frequency, of the storage source voltage and of the temperature conditions on the efficiency of the wireless
power transfer.
Keywords: DD inductance coil, wireless power transfer, resonance transformers, resonance inductive power transfer
 

LAYERS AND PROCESSES IN THE MODEL OF TECHNOLOGICAL POSTAL SYSTEM  

Lucia Madleňáková1, Radovan Madleňák2, Paweł Droździel3, Ivan Kurtev4

1University of Žilina
Žilina, Slovakia, Univerzitná 1
Ph.: +421 41 513 3125, e-mail: lucia.madlenakova@fpedas.uniza.sk
2University of Žilina
Žilina, Slovakia, Univerzitná 1
Ph.: +421 41 513 3124, e-mail: radovan.madlenak@fpedas.uniza.sk
3Lublin University of Technology
Lublin, Poland, Nadbystrzycka 38
Ph.: +48 81 538 4190, e-mail: p.drozdziel@pollub.pl
4Technical university of Sofia
Sofia, Bulgaria, 8 Kl. Ohridski Blvd
Ph.: +359 88 739 3188, e-mail: i.kurtev@mail.bg

The paper include important aspects of layer model of postal technological system such as makes the possibility to define
rules for regulating, technical and technological requirements and interfaces to communicate with other postal systems. The current
postal reform is mainly attributable to release of network access and ensuring full interoperability between technological systems. Not
only to ensure the development and protection of competition but also in respect to the conservation of requirements to provide the
universal service, which is the performance of public interest. There is a space here to examine the postal system, not only from a
procedural point of view, but to be viewed as an open communication system. It is possible to find there the commonalities with other
communication sector branches and to handle the technological postal system in more layers; similarly as the electronic
communication systems are handled. Model of layer postal system, based not only on the processes but on layers functionality, will
enable to identify communication protocols and interfaces determining interoperability. It also opens the question of appropriate
regulation model.
Keywords: Layer, Process, Model, Postal System, Interconnection, Regulation
 

Выберите услугу
Сумма оплаты
EUR
Имя, Фамилия
Э. почта