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Indirect benefits of D11 motorway for spatial socioeconomic development
Lehovec, František; Brabcová, Miroslava; Vondráčková, Petra; Marada, Miroslav
2010 - English
For municipalities situated up to 15 minutes of car travel from the D11 motorway between Praha
and Hradec Králové, the following characteristics were surveyed:
· proportion of commuters to Prague
· number of job opportunities in the municipality
· unemployment rate in the municipality (4/2008)
· transport accessibility (time needed) from the municipality to Prague or to a district town
· transport accessibility (time needed) to the nearest exit
· theoretical (determined by a model) location potential of the municipality in relation to Prague and to a district town (the power of Prague or a district town expressed by the formula: the number of inhabitants divided by the distance from the town to the surveyed municipality)
· total location potential (the sum of both partial location potentials)
· municipality potential (total location potential related to the surveyed municipality power, i.e. the number of inhabitants in the municipality)
The analysis of the data above produced several fundamental, statistically relevant correlation
relations among the surveyed characteristics.
The location potential of Prague shows the closest correlation relations. A correlation with 5 other
characteristics was proved on the 99% significance level. Based on the relationships thus obtained, we may judge that the potential of Prague has a much higher weight for the surveyed municipalities than the potential of Hradec Králové, and therefore the location in relation to the capital city is much more significant for the municipalities than their location in relation to Hradec Králové.
Keywords:
motorway; D11; development
Available in digital repository of UPCE.
Indirect benefits of D11 motorway for spatial socioeconomic development
For municipalities situated up to 15 minutes of car travel from the D11 motorway between Praha and Hradec Králové, the following characteristics were surveyed: · proportion of commuters to Prague · ...
The modern information systems for controlling the railway traffic as an indispensable tool of an infrastructure manager
Mestický, Štefan; Krásenský, David
2010 - English
The information systems of an infrastructure manager (IM) are today an indispensable part of its basic technological processes. Their significance has been growing even more in the setting of the liberalized transport market, where many private railway undertakings (RU) or operators enter the railway network and content for its spare capacity. The contribution discusses covers the high-level structure of the key information systems of the infrastructure manager, their coverage of the aforementioned technological processes, from designing the timetables and ordering ad hoc paths, to the operational control in all of its spatial and time levels, to assessing the traffic and resolving the exceptional situations. As the most important feature, the authors emphasize a profound integration of all these systems, which involves unifying all the databases and facilitates reusing the captured data, which boosts the overall efficiency of the system. The authors draw from their huge experiences of developing, solving, implementing, and operating these systems, above all in the environment of Czech and Slovak railway networks.
Keywords:
railway transport; infrastructure manager; traffic control; information systems; integrated solution; information interoperability; mission-critical systems; planning
Available in digital repository of UPCE.
The modern information systems for controlling the railway traffic as an indispensable tool of an infrastructure manager
The information systems of an infrastructure manager (IM) are today an indispensable part of its basic technological processes. Their significance has been growing even more in the setting of the ...
Aircraft maintenance tecnicians certificating procedure in Turkey
Özen, Mustafa
2010 - English
The air transportation rules are strictly edited worldwide, as in Europe and in Turkey. Turkey has
participated several international organizations; such as International Civil Aviation Organization
(ICAO), European Civil Aviation Conference (ECAC), Joint Aviation Authorities (JAA), and so on. All
of these memberships force Turkey to prepare national aviation legislation as convenient as international rules. These international rules can be updated so they must be followed and if it is necessary national rules also must be updated.
The aim of this paper is to discuss the importance of qualified aircraft maintenance technicians.
For that reason; first, international aviation technicians qualification rule (EASA Part 66/JAR 66) is examined then, national legislation is examined. It is found that aircraft maintenance technicians’ certification procedure is same as EASA Part 66/JAR 66 requirements. It is also found that EASA Part 66/JAR 66 rule is transferred to Turkey’s national legislation as a need of JAA membership. It is obtained that there are no significant differences between international and national legislations. However, both legislations do not cover the old license conversion problem which has a great importance. It is concluded that qualified aircraft maintenance technicians are the key factor for sustainable air transportation.
Keywords:
air transportation; aircraft maintenance; aircraft maintenance technician
Available in digital repository of UPCE.
Aircraft maintenance tecnicians certificating procedure in Turkey
The air transportation rules are strictly edited worldwide, as in Europe and in Turkey. Turkey has participated several international organizations; such as International Civil Aviation ...
Realistic design loads as a basis for semi-trailer weight reduction
Pauwelussen, Joop; Visscher, Jeroen; Merts, Menno; Horn, Rens
2010 - English
One way to reduce the fuel consumption to payload ratio of heavy vehicle combinations is to reduce the empty trailer weight. This requires an understanding of the vehicle structure, assembly
techniques and production process, and of special materials (e.g. high strength steel) with emphasis on strength and fatigue. But in all cases, one needs to have realistic design loads available.
This paper describes an approach to determine these loads as a first step in the process. For this purpose, tractor-semitrailer combinations have been tested under normal operational conditions, for a longer period, under monitoring of a large number of measurement data. These data have been transferred into dynamic loading data in terms of forces at each separate wheel and at the king-pin in vertical, lateral and longitudinal direction. The experience with several trailers has resulted in a cost-effective testing procedure, which also allows the assessment of representative loading cycles.
Keywords:
tractor-semitrailer; weight reduction; load cases
Available in digital repository of UPCE.
Realistic design loads as a basis for semi-trailer weight reduction
One way to reduce the fuel consumption to payload ratio of heavy vehicle combinations is to reduce the empty trailer weight. This requires an understanding of the vehicle structure, ...
Transport volume in regions of the Czech Republic in relation to the production of waste
Pojkarová, Kateřina; Hruška, Roman
2010 - English
The article deals with the transport volume in regions of the Czech Republic in relation
to the production of waste. On the basis of waste statistics and transport statistics is researched
the greatness of the relation between the transport volume and the production of waste in regions of the Czech Republic. The relation is illustrated graphically too. We have many kinds of waste which we can monitor. The most important kinds of waste are municipal waste, industrial waste, construction and demolition waste, waste from energy prod. (excl. radioactive), mining and quarrying waste, waste from water treatment and distribution, agriculture and forestry waste, waste from sanitation and similaractivities and other waste.
Keywords:
transport; waste; relation; region
Available in digital repository of UPCE.
Transport volume in regions of the Czech Republic in relation to the production of waste
The article deals with the transport volume in regions of the Czech Republic in relation to the production of waste. On the basis of waste statistics and transport statistics is researched the ...
Calculation and research itinerary fuel consumption of a car by its acceleration on the designated distance
Savenkov, Nikita
2010 - English
I have worked out a computing method of itinerary fuel consumption of a car by its acceleration
on the designated distance. In the process of acceleration an engine spends a considerable part of power for overcoming of inertial force and itinerary resistance. At the same time the fuel consumption increases substantially, if an engine behavior is not refined and not agreed with parameters of transmission. The solving of this question is especially actual in connection with a leap of intensity of transport streams, like in cities and on country roads, what sets conditions for an increase number of cycles of acceleration and deceleration of a vehicle. The suggested strategy permits to make a right choice of mechanical advantages at a designated earlier number of transmissions and appropriate to these transmissions load factor of an engine. It gives
a possibility to recommend the results of analysis for design of a car transmission, in particular gearbox, like mechanical and automatic. The use of hydromechanical gearboxes and automatic transaxle (CVT type) joint with electronic systems of their control will supply the rise of an average effective coefficient of efficiency of an engine
in the process of acceleration of an engine of a car оn the basis of increase of an overall performance of transmission and will result in reduction of itinerary fuel consumption.
Keywords:
itinerary fuel consumption of a car; accelerations; load factor of an engine
Available in digital repository of UPCE.
Calculation and research itinerary fuel consumption of a car by its acceleration on the designated distance
I have worked out a computing method of itinerary fuel consumption of a car by its acceleration on the designated distance. In the process of acceleration an engine spends a considerable part of ...
Influence of the bypass on the capacity of roundabout crossings
Slabý, Petr
2010 - English
Capacity of standard roundabout crossings is calculated after the Czech Manual TP 135. Micro–
simulation model VISSIM has been used to evaluate the influence of the modification of the crossing –
the use of bypass. The increase of roundabout capacity for 20 and 50 % of cars turning into bypass is presented. Naturally the impact of bypass is more pronounced for larger parts of turning cars. Similar graphs for other dispositions could serve as an amendment for designers of these crossings.
Keywords:
roundabout crossings; capacity; bypass; micro-simulation; VISSIM
Available in digital repository of UPCE.
Influence of the bypass on the capacity of roundabout crossings
Capacity of standard roundabout crossings is calculated after the Czech Manual TP 135. Micro– simulation model VISSIM has been used to evaluate the influence of the modification of the crossing ...
Structure of access charges for use of railway infrastructure for passenger and freight trains
Stojadinović, Nikola; Bugarinović, Mirjana
2010 - English
Charging system for use of Railway Infrastructure is one of the assumptions for introducing and opening of Rail Market and appearance of more traffic operators on it. European Union members had already introduced a charging system, but it is still early to generalize influence of Access Charges on market. Serbia is in the process of accession to the EU and issue of Access Charges will be one of the necessary conditions to apply. Therefore, recognition of the way of solving a charging system in European Countries for Serbian Railway and Serbia is important issue. How much should Structure of Access Charge be different for Passenger and Freight Trains due to the different market position and competitiveness of Passenger and Freight Traffic? In this paper will performed factors that influence on approach to choose structure for Access Charges, provide an overview and analysis how other countries in Europe choose Access Charge, and regarding that - their experiences.
Keywords:
infrastructure; access charges structure; passengers and freight trains
Available in digital repository of UPCE.
Structure of access charges for use of railway infrastructure for passenger and freight trains
Charging system for use of Railway Infrastructure is one of the assumptions for introducing and opening of Rail Market and appearance of more traffic operators on it. European Union members had ...
Municipal waste components and their collection by computer support
Volek, Josef
2010 - English
Growing volumes of different waste types produced by industrial companies represent a serious threat for the environment. Unthoughtful waste liquidation by means of dumping results to massive
valuable resources wasting on one hand and in environment pollution by greenhouse gases emissions into the air, endangering underground water by extract liquid seepage and soil contamination by heavy metals on the other. The only possible method of a sustainable development is a consistent separation of reusable materials contained in waste and their consequent recycling, separation of combustible waste by means of environment-friendly technologies, by separation of bio-degradable materials suitable for composting with a consequent return into natural nutriment cycle, and last but not least, by separation of hazardous waste components and their ecological /liquidation/use. The article focuses on the options of operational research methods in combustible waste management, handling separated bio-degradable municipal waste components and hazardous waste management in the Pardubice Region. This research is funded by the Research Project Theory of Transportation Systems MSM
0021627505.
Keywords:
municipal waste; combustible waste; bio-degradable waste; hazardous waste; computer-aided decision making; operational research; theory of graphs; location analysis
Available in digital repository of UPCE.
Municipal waste components and their collection by computer support
Growing volumes of different waste types produced by industrial companies represent a serious threat for the environment. Unthoughtful waste liquidation by means of dumping results to ...
The choice of the appropriate structure of the control system with respect to the required availability and safety
Ždánsky, Juraj; Hrbček, Jozef
2010 - English
Nowadays, the programmable logic controllers (PLCs) are often in the role of control systems.
They are used primarily for control of technological processes, but the exception is neither the utilization in transport. As an example can be mentioned systems of rail safety technique: system MODEST from the company 1Signální, ELEKSA system from Siemens, the system SPA 4 from Bombardier Corporate. The PLC producers continually improve their properties. The aim of the producers is to extend their application possibilities. Therefore there can be found in the offers of PLC producers PLC with attribute fail-safe, eventually fault-tolerant. PLCs are modular systems, so their availability and safety depends on the chosen structure of control system. The choice of structure is appropriate to base on the modeling of monitored properties. Another reason to create a suitable model, eventually models, is that the certificate of producer about reached level of safety PLC says nothing about the application of PLC. The correct model must also take into account the application individualities (e.g. the way of sensors connecting, actuators, etc.). The article compares the availability and safety of various structures of control systems based on PLC on the ground of created models.
Keywords:
control system; safety; availability
Available in digital repository of UPCE.
The choice of the appropriate structure of the control system with respect to the required availability and safety
Nowadays, the programmable logic controllers (PLCs) are often in the role of control systems. They are used primarily for control of technological processes, but the exception is neither the ...
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