University of Ljubljana

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    Monitoring and forecasting road safety on the national road network

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    For the main and regional roads the spots with a high accident rate are identified on the annual basis. After the implementation of the measures the spots with a high accident rate are monitored to define the effectiveness of implemented measures. This was rarely the case in the past. The main aim of the thesis is to define how much the implemented measures contributed to the improvement of road safety. Little attention is paid to predicting future events with regard to road safety at the identified road sections taking into account different scenarios as well as to predicting road safety at planned traffic routes. By using relevant methods for predicting road safety, road overseers and road planners would acquire the necessary data about the predicted condition of road safety on existent and planned traffic routes. Consequently, relevant measures could be predicted to prevent a bigger number of road accidents.\ud Based on the methodology of assessing the effectiveness of the measures, for each identified spot with a high accident rate the effect of the implemented measure on road safety was calculated as well as the crash reduction factors according to individual groups of measures.\ud On the basis of the conducted researches a methodology was developed that shows the effects of individual measures on the elimination of a spot with a high accident rate and shows the possible consequences in case the suggested measures are not implemented.\ud Further, a methodology was developed in order to predict road safety on the existent as well as the planned roads. The main aim of the new methodology is to identify potential spots with a high accident rate already in the phase of planning the changes on existent road network or a new traffic route in order to predict the measures for ensuring higher road safety

    Use and experience with the use of mastic asphalt

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    The thesis presents the areas of installation of mastic asphalt mixture, which nowadays is used in Slovenia and abroad. It describes what is its utility, changes over time, any failure or damage that may arise over the years and the reasons for the changes. In the first part of the thesis subject I present where the mastic asphalt is installed abroad based on the collected literature. Because I believe that in Slovenia it is not applied in such a wide spectrum, I will present the areas of installation and experience in our country in the chapters that follow.\ud In the central part I describe the experience of the production process and the installation, including transport of mastic asphalt mixture. All this requires a coordinated and integrated group of people. Such work is carried out continuously, which is very important for product quality. Such work is also fast and last but not least it is also economical. At the end of the thesis I describe specific cases on the terrain, which show the appearance of asphalt today

    Analysis of hydraulic conditions in steep river channel on the case of Kuzlovec Torrent

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    Equations for flat or low land rivers, which are usually used for modelating with special computer programs, do not act well in steep (torriental) streams. In this kind of streams we have a complex behaviour, because it comes to a multistage stream flow and to a changing rough Manning coeffcient as a function of a flow or water level in the river. The correct determination of this coefficient is essential in hydraulic modeling. In my thesis I was trying to define the hydraulic conditions in the selected high-gradient steep stream Kuzlovec as much as possible. I described some conventional hydraulic equations (Manning, De Chezy, Jarrett equation, etc.) and computer program HEC-RAS. The main purpose of this task was to verify the operation of the hydraulic model in extreme hydraulic\ud conditions of steep torrential channel with an average fall of 16%. In the practical part I presented detailed analysis of hydraulic conditions for a steep stream Kuzlovec in Polhograjsko hribovje, which are forming with steep slopes, cascades and rocks. Hydraulic model was created based on terestic lidar track channel and five different flow\ud rates

    The adequacy of the measures envisaged in the Slowenian railway network

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    Transport services are crucial for economic development and quality of people's life. One of the major problems of modern traffic is congestion of road and air traffic, causing negative impacts on the environment and the quality of life. For this reason, it is necessary that transport policy guide the development of transport, which will reach sustainable mobility with different measures. Increasing the volume of rail traffic have an important role to achieve this objective. Slovenian transport policy is coordinated with transport policy of the European Union, because its transport network is part of the TEN-T network. TEN-T policy has set itself the objectives which should be reached in 2030 and 2050. One of the objectives is also to divert 30% of freight traffic from road to rail by 2030 at distances greater than 300 km. This is made possible primarily through the establishment of a rail network that is competitively well-developed road transport. Slovenia in recent years initiated greater investment in the railways, which will improve the state of the railway infrastructure and increase the use of this form of transport. In this thesis, I examined the extent to which rail lines meet the requirements of the TEN-T core network and assess whether they will meet those requirements by 2030 when the planned\ud measures will be implemented. With a simple account, I also considered whether the measures envisaged in relation to the anticipated traffic will be sufficient to assume 30 % of road freight transport by 2030. The realization of planned and necessary measures also depends on the ability of financing, so I also compare systems of financing in the field of railways in Slovenia and other countries

    A chronological overview of legislation about energy efficiency in buildings in our area

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    In graduation thesis I described the legislation about energy efficiency in buildings in our area from 1875 to 2010. I showed the changes in legislation through time in order to provide energy efficiency. Lowering thermal transmittance through time is shown by graphs:\ud • outer wall\ud • roof\ud • ceiling between floors (unheated attic)\ud • underground wall\ud • floor above ground\ud • floor on the ground.\ud I wrote construction examples for outer wall, ceiling between floors and roof. Construction examples are made of building materials typical for each period

    Using surface matching for assesment of surface changes on a scree

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    This graduation thesis's main goal is to assess surface changes, which is done with computing of volume between two surfaces. It was done on a practical example of a scree on Potoška planina, for which we had two sets of observations made with one year in between. Simultaneously we wanted to determine the difference in computed volume with and without using the process of surface matching, which transforms a point cloud so that the distances between point clouds are minimal. Calculation of volume was done in national D96 coordinate system and in a local coordinate system. After analyzing the results, it is difficult to claim, that surface matching had any influence on computed volume, but graphical representation of results shows a different picture

    Evaluation of the energy performance of the building envelope of duplex

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    The thesis describes the current status of the building envelope, of the building which is Duplex where I live since birth. It is located in Ljubljana, more precisely in Zgornem Kašlju. In energy performance of individual structural sections, thermal transmittance was determined\ud by using the online software tool U-Wert. The energy balance of the object was created with the help of the program TOST. The results that I have received before renovation have shown that the current building envelope does not meet the requirements prescribed by applicable laws. After results is describeb the proposed renovation of the building. Then there are presents new results after renovation. The thesis presents the effects of typical thermal bridges which occur at the facility before and after renovation. The results obtained showed that the differential transmission loss between simplified and the actual consideration of thermal bridges before renovation higher than the results after the renovation. The reason for this is that we had before the energy renovation more thermal bridges. With energy renovation the influence of some thermal bridges was limited or have been removed

    Modelling functional regions based on Curds method

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    In this thesis we modelled functional regions as Travel-To-Work Areas (TTWA) by using CURDS method (Coombes in Bond, 2008). Case study of Slovenia was performed for years 2009 and 2011. Statistical data on inter-municipal commuting were base for modelling TTWA. Analysis and comparison of TTWA between two years showed some changes in size, number and shape of TTWA. We performed also comparative analysis for TTWA and statistical regions in Slovenia, as well as for TTWA and functional urban regions defined by the Strategy of spatial development of Slovenia (SPRS, 2004). The results of this thesis, and especially description of CURDS method, can contribute to different studies of functional interactions in Slovenia

    Comparative analysis of the development opportunities at the placement and construction of hydropower plants on the River Mura in Austria and HPP Hrastje Mota in Slovenia

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    This master thesis discussed the scope of developmental opportunities of the spatial placement of large infrastructures, not only for the state but also for local communities. It addressed the issue of placement and construction of hydropower plants on the Mura River in Austria and Slovenia in the light of the commitments taken by the Republic of Slovenia, regarding the increased use of renewable energy sources by 2020 and 2040. The thesis includes an analysis of developmental opportunities from the perspective of local communities, which have already constructed hydropower plants in Austria, and the first planned hydropower plant Hrastje Mota in Slovenia. We compare the development expectations of the local communities, spatial aspects of the regulatory, environmental aspects, and in particular the aspect of social acceptability in Austria and Slovenia. Shown are some examples of good practice development opportunities at already constructed hydropower plants on the river Mura in Austria. It was found that the placement of hydropower plant Hrastje Mota on the river Mura is possible with the appropriate technical adjustments and building the necessary measures for social acceptance. Social acceptability would be easier to achieve with the establishment of the »Moderator for natural and built environment« as an institution. Furthermore, the local community during the construction of hydropower plant Hrastje Mota see their development opportunities primarily in the construction of accompanying infrastructure arrangements and arrangements falling within the segment of new opportunities in tourism and improving the environment

    Optimization of processes in waste management plant

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    This undergraduate thesis presents details of the RCERO Ljubljana project, the Regional Waste Management Centre with its most important part: the mechanical-biological treatment plant. The plant has been constructed for the reception and processing of household waste, bulky waste, biodegradable waste and waste from craft activities, manufacturing and service activities for the city of Ljubljana and the Central Slovenia region. The presentation covers a description of the facilities and installations at the plant. Individual groups of activities are presented, including waste processing procedures and the connections and interconnections between processing procedures at a plant of this type. Waste processing is necessary and important for reducing the quantities of waste placed in andfill and for increasing the use of renewable sources obtained from waste processing. Individual groups and sub- groups of mechanical and biological waste processing herefore take place at the plant. Waste fractions capable of being used for recycling and fractions serving as raw materials for the preparation of secondary fuels are obtained by means of the mechanical processing of waste with\ud separation. In biological processing, biogas is obtained from biodegradable waste through a process of anaerobic fermentation. This gas is used as a fuel in waste processing procedures. Furthermore, the thesis addresses the optimisation of processing procedures via an analysis of waste processing procedures and data. The daily plan, in the form of a table, is a plan for the optimal use of working time, depending on the waste processing procedures involved. The daily plan table for waste processing has been already in use at the plant for the processing of waste and the analysis of procedures

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