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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
161

Analýza výhledu řidiče z vozidla / Analysis of the Driver's View from the Vehicle

Lažek, Jan January 2018 (has links)
This diploma thesis deals with the issue of the driver's view from the vehicle, respectively the measurement of the field of views and blind spots. This thesis takes into account the 360° view around the vehicle. The first part of the thesis is devoted to the theoretical outlook of the vehicle. The reader becomes acquainted with the progressive development of the 360° view in a vehicle, beginning with the past and leading up to the present enhancements in today's vehicles. The reader will also understand, the position and movement of the eyes in a vehicle, the detailed description of the direct forward look, and the indirect reverse look. Subsequently, the theoretical part is devoted to the methodology of visibility measurements according to the prescribed standards of SAE and EHK. The theoretical part concludes with a chapter explaining how the theory is used in the practical part of the thesis. The practical part is devoted to the design of the 360° views of the vehicle and the description of the methodology. Another element of the practical part is the measurement protocol. This section deals with all the calculations for the complete driver's view, which was shown as an example on one of the sixteen vehicles measured. The last chapter compares, evaluates and reviews the results of all measured 360° views and blind spots around the vehicle.
162

Mostní nadjezd přes dálnici / Overpass bridge across the highway

Černý, Pavel January 2020 (has links)
The topic of this thesis is detailed design of the supporting structure of a bridge. Three variants are designed. The structure is designed as a single beam bridge of 6 spans. The calculation of load efects make in software MidasCivil 2019 and Scia Engineer 18.1. The subject of the expertise of the structure is service limit state and ultimate limit state. For evaluation of cross sections is used MS Excel. Both design and relevant drawing documentation of the bridge deck and substructure. The design and assessment are according to the europien standards.
163

Návrh mostní konstrukce na rychlostní komunikaci / Design of the speed-way bridge structure

Nádvorník, Ondřej January 2013 (has links)
This Master's thesis deals with the detailed design of the supporting structure of the bridge with two sections, with the rise in the direction of the intermediate support, and cross-cut single-beam construction. The supporting structure is designed from the prestressed concrete, prestressing losses are accurately quantified. It also deals with the assessment of pillar base threshold and pilot groups. The assessment was carried out according to the limit states.
164

Statické řešení věžového vodojemu / Analysis of structure of watertower

Roudný, Tomáš January 2017 (has links)
The work deals with design of load-bearing structure of watertower. The solution include design and assessment of all main parts of watertower according to ČSN EN 1992 in the ultimate limit state and the serviceability limit state (crack limitation).
165

Posouzení bezpečnostního celíku u podzemní stavby / The face safety pillar assessment for underground construction

Zapletal, Adam January 2017 (has links)
The master thesis parametrically compares different methods to determine the required lengths of the safety pillar when building secondary urban collector in Brno. The analytical calculation by Šedivý is compared with mathematical modeling executed in the program Plaxis 2D 2015.02. version and also in the program Plaxis 3D Introductory 2013 version.
166

Olika bolagsstyrningsmekanismers påverkan på miljömässiga och finansiella prestationer : En jämförande studie mellan Sverige, Tyskland och Frankrike / The impact of different corporate governance mechanisms on environmental and financial performance : A comparative study between Sweden, Germany, and France

Gustafsson, Simon, Hultberg, Sofia January 2022 (has links)
Bakgrund: Den globala uppvärmningen är en av vår tids stora utmaningar. Företagen står för en stor del av utsläppen och därav är det av vikt hur företagen styrs framåt, då styrningen påverkar företagens miljöarbete. Olika mekanismer av bolagsstyrning kan påverka företagens miljöarbete och dessa mekanismer kan även tänkas variera i påverkan mellan olika institutionella kontexter. Syfte: Syftet med studien är att göra en jämförande studie mellan Sverige, Tyskland och Frankrike angående om bolagsstyrningsmekanismer har en påverkan på finansiella och miljömässiga prestationer samt om miljömässiga prestationer har en påverkan på finansiella prestationer. Metod: Metoden som använts är longitudinell och komparativ med en deduktiv ansats. Agentteorin, aktieägarperspektivet, intressentteorin, legitimitetsteorin, CSR som praktisk tillämpning samt tidigare forskning har legat till grund för studiens hypoteser. Slutsatser: Resultaten ger indikationer på att det finns både likheter och skillnader i vilken relation bolagsstyrningsmekanismerna har med miljömässiga och finansiella prestationer mellan länderna. Relationer mellan miljömässiga och finansiellaprestationer finns endast i Tyskland och Frankrike, vilket tyder på att det finns skillnader mellan länderna i vilken påverkan miljöarbetet i ett företag kan ha på lönsamheten. / Background: Global warming is one of the greatest challenges of our time. Companies is responsible for a large part of the emissions and how companies are governed moving forward is of importance since governance impacts companies’ environmental work. Different mechanisms in corporate governance may impact their environmental work and the mechanisms may vary in impact between different institutional contexts. Purpose: The purpose of the study is to do a comparative study between Sweden, Germany, and France regarding whether certain mechanisms in corporate governance may have an impact on financial and environmental performance and also if environmental performance has an impact on financial performance. Method: The method used is a combination of longitudinal and comparative method with a deductive approach. Agency theory, shareholder perspective, stakeholder theory, legitimacy theory, CSR as a practical application as well as former research is used to formulate the hypotheses of the study. Conclusion: The results of the study indicate that both similarities and differences in the relationship between corporate governance and financial and environmental performance exists between the countries. Relationships between environmental and financial performance is only existing in Germany and France, which indicates that there are differences between the countries regarding the impact environmental work in a company may have on profitability.
167

Ekonomické ukazatele udržitelného urbanistického rozvoje středně velkých měst / Economic indicators of sustainable urban development of medium-sized towns

Pavlas, Miroslav January 2014 (has links)
The aim of the thesis is to analyse how to measure an economic pillar of sustainable urban development when it is understood in terms of qualitative city development. This principly means achieving economic prosperity which does not lead to damage of the city areas and decrease the quality of life for its residents. This approach requires the creation of an appropriate set of indicators that will cover qualitative aspects of sustainable economic development. The first section summarizes existing approaches to the definition of sustainable development and ways of measuring both on the Czech and the international level. There are also defined basic characteristics of the urban development which are appropriate to express a qualitative development of the city. The second part is focused on existing ways in which sustainable development is measured, i.e. especially in the context of indicator sets. These are under detailed assessment which aim is to show how useful is to measure the economic sustainability from the qualitative point of view. In this part, the limits of using economic macro aggregates (especially Gross Domestic Product) is emphasized because there are still regarded as one of the key economic indicators of sustainable development. In the next part the thesis deals with the definition of economic prosperity and focuses on the characteristics typical for short, medium and long term perspective. Measurement of sustainable urban development in the short term is based on assessment of financial situation. From the medium-term point of view, it is crucial to assess how the city handles its property, i.e. mainly buildings and land. These property components are substantial for a further direction of city development. In the next section are designed indicators aimed at measuring the ability of the city to maintain a skilled workforce which is one of the most important conditions of long-term economic prosperity. The final theoretical part of the thesis is focused on how the long-term sustainable urban development is to be expressed in an economic way through the assessment of investments in urban infrastructure and its operational efficiency. The designed set of indicators is verified on case studies of three medium-sized Czech cities.
168

Miljö - och kostnadsanalys av UHPC som reparationsmaterial för bropelare / Sustainability of UHPC as a repair material for bridge piers

Huq, Saraj, Milosevic, Ivan January 2020 (has links)
Byggindustrin har i dagsläget en negativ klimatpåverkan och infrastrukturen likaså. Många länder har därför försökt undersöka möjligheten att hitta ett långsiktigt och hållbart alternativ till det konventionella reparationsmaterialet. Olika material undersöks, olika optimerade betongrecept testas för att förstå hur miljöpåverkan har minimeras för att förlänga livslängden hos betongkonstruktioner. Vid reparation av en bro är det viktigt att ta hänsyn till både kostnader och miljöpåverkan under hela dess livscykel. Kostnader som uppstår är investeringskostnader samt drift- och underhållskostnader. Miljöpåverkan från betongkonstruktioner i produkt skedet består av materialframställning, byggtransporter och produktion på byggarbetsplatserna. totala växthusgasutsläppet summeras och beräknas i kg CO2-ekv. Syftet med detta examensarbete är att studera den långsiktiga hållbarheten hos UHPC med hjälp av beräkningsmodeller såsom livscykelanalys och livscykelkostnadsanalys med avsikt att applicera reparationstekniken. Flera UHPC recept ställs mot det konventionella reparationsmaterialet detta för att kunna bedöma miljöpåverkan och kostnadseffektiviteten hos materialen. Dvs om det går det att minska klimatutsläppet och kostnaderna. De jämförda recepten är olika UHPC-recept samt traditionell betong. Recepten appliceras slutligen på en befintlig bropelare för att undersöka de olika receptens tillämpbarhet som reparationsmaterial ur ett hållbarhetsperspektiv. Det saknas tillräckligt med kunskap om UHPC:s långtidseffekter, speciellt om reparationsintervall. Med åtanke på materialets höga draghållfasthet och beständighet tillsammans med UHPC:s strukturella egenskaper har antaganden gjorts att materialet är reparationsfri under konstruktionens livslängd. Det vill säga att bropelaren som undersökts med UHPC i studien inte behövt repareras under sin livslängd. Resultatet från livscykelkostnadsanalysen visar att UHPC är dyrare i både kubikmeter (m3) och kvadratmeter (m2) med tanke på täckskiktets tjocklek än traditionell betong i materialpriset. Men med tanke på att UHPC är underhållsfritt har den en mindre livscykelkostnad. Resultatet från livscykelanalysen visar att UHPC blandningarna har större miljöpåverkan per kubikmeter. Då de olika täckskiktetstjocklek relateras till pelarens längd erhålls resultat där UHPC medför slankare konstruktioner och besparingar upp emot 50% mindre betongvolym (för den 6 m långa pelaren i fallstudien). Med UHPC som reparationsmaterial medför det till att bron inte behöver repareras under dess livslängd. Bropelaren som repareras med UHPC kommer därför ha en mindre miljöpåverkan än den traditionella betongen. Långsiktig hållbarhet och mindre totala växthusgasutsläpp (som är i riktlinje med EU:s och regeringens klimatkrav) erhålls för anläggningskonstruktioner med UHPC. / The construction industry has a negative climate impact and so does the infrastructure. Which is due to frequent repairs that are not sustainable. Many countries have therefore tried to explore the possibility of finding a long-term and sustainable alternative to conventional repair materials. Different materials are examined, different optimized concrete recipes are tested to understand how the environmental impact can be minimized and the service life of concrete structures extended. When repairing a bridge, it is important to take into account both costs and environmental impact throughout its life cycle. Costs that arise are investment costs as well as operating and maintenance costs. The environmental impact from concrete structures in the product phase consists of material production, construction transports and production at construction sites. The total greenhouse gas emissions are summed up and calculated in kg CO2 eq. The purpose of this thesis is to study the long-term sustainability of UHPC using calculation models such as life cycle analysis and life cycle cost analysis with the intention of applying the repair technique. Several UHPC prescriptions are set against the conventional repair material in order to be able to assess the environmental impact and cost-effectiveness of the materials. That is, if it is possible to reduce climate emissions and costs. The compared recipes are different UHPC recipes and traditional concrete. The recipes are finally applied to an existing bridge pillar to investigate the applicability of the various recipes as repair materials from a sustainability perspective. There is a lack of knowledge about the long-term effects of UHPC, especially about repair intervals. Given the high tensile strength and durability of the material together with the structural properties of the UHPC, it has been assumed that the material is repair-free for the life of the structure. That is, the bridge pillar examined with UHPC in the study did not need to be repaired during its lifetime. The results from the life cycle cost analysis show that UHPC is more expensive in both cubicmeters (m3) and square meters (m2) given the thickness of the cover layer than traditional concrete in the material price. However, given that UHPC is maintenance free, it has a lower lifecycle cost. The results from the life cycle analysis show that the UHPC mixtures have a greater environmental impact per cubic meter when the cover layer varies. As the thickness of the different cover layers is related to the length of the pillar, results are obtained where UHPC leads to slimmer constructions and savings of up to 50% less concrete volume (for the 6 m long pillar in the case study). With UHPC as repair material, this means that the bridge does not need to be repaired during its service life. The bridge pillar that is repaired with UHPC will therefore have a smaller environmental impact than the traditional concrete. Long-term sustainability and smaller total greenhouse gas emissions (which are in line with EU and government climate requirements) are obtained for plant constructions with UHPC.
169

Essays and Studies in the Art of Kucha

Konczak-Nagel, Ines, Zin, Monika 16 March 2023 (has links)
The first volume of the Academy project 'Buddhist Murals of Kucha on the Northern Silk Road' contains three studies that show what information can be gained from the paintings. The first study by Ines Konczak-Nagel, “Painted Buddhist Cosmology: The Pictorial Programme of Central Pillar Caves in Kizil”, demonstrates how Buddhist cosmology, always seen in connection with the Buddhist path of salvation, is represented in the selection of topics and the arrangement of paintings on the cave walls. The second study by the same author, “Representations of Architecture and Architectural Elements on the Wall Paintings of Kucha”, is part of an ongoing extensive analysis of the material culture depicted in the paintings. The architecture represented provides insights into the local Tocharian architecture of Kucha, which has since disappeared. The study of Monika Zin “The Monk Kāśyapa in Kucha, the First Council, and the Furtherance of Buddhist Teaching” examines interesting extensions within the paintings illustrating the events connected with Buddha’s death, the many-scenic representations of the first council in Rājagṛha. There are good reason to believe that the monk Mahākāśyapa who was supposed to convoke the summit was worshiped in Kucha as a saint and guarantor of the preservation of Buddhist teachings.:Foreword by the Series Editors (Eli Franco and Monika Zin) I. Painted Buddhist Cosmology: The Pictorial Programme of Central Pillar Caves in Kizil (Ines Konczak-Nagel) Bibliography List of Illustrations with Acknowledgements II. Representations of Architecture and Architectural Elements in the Wall Paintings of Kucha (Ines Konczak-Nagel) 1 City Fortifications in 1st Indo-Iranian Style Paintings: Kuśinagara 2 City Fortifications in 2nd Indo-Iranian Style Paintings: Rājagṛha and Kuśinagara 2.1 Representations of the City of Rājagṛha 2.2 Representations of the City of Kuśinagara 2.3 Analysis of the Architectural Elements of City Fortifications 2.3.1 Walls 2.3.2 Loopholes 2.3.3 Crenellated Wall Walks 2.3.4 Towers 2.3.5 Gates and Access Paths 2.3.6 Decorative Elements 2.4 Conclusion 3 Representations of Fortifications of Other Cities in Kuchean Paintings 3.1 Depictions of City Fortifications with Towers along the Wall 3.1.1 Depictions of the City of nirvāṇa 3.1.2 Depictions of the City of Gods on Mount Meru 3.2 Simplified Depictions of City Fortifications 3.2.1 A Wall Painting in the 1st Indo-Iranian Style Showing the Story of Śroṇakoṭikarṇa 3.2.2 Wall Paintings in the 2nd Indo-Iranian Style Showing the Story of Maitrakanyaka 3.2.3 Wall Paintings in the 2nd Indo-Iranian Style Showing a City Fortification Occupied by Demons 3.3 Conclusion 4 Representations of Isolated City Gates and Palace Gates 4.1 Exceptions 4.2 Décor 4.3 Conclusion 5 Architectural Elements in and on Residential Buildings 5.1 Pillars 5.2 Ceilings 5.3 Windows 5.4 Balustrades 5.5 Conclusion 6 General Conclusion Bibliography List of Illustrations with Acknowledgements III. The Monk Kāśyapa in Kucha, the First Council, and the Furtherance of Buddhist Teaching. With an Appendix of Primary Sources Concerning the First Council as Given by Przyluski, Compiled by Fang Wang (Monika Zin) The Cycle within the Cycle: The Council of Rājagṛha in Kizil The Wall for Monks and the Cremation The Characteristics and Worship of the Monk Mahākāśyapa Mahākāśyapa in Kucha Appendix Bibliography List of Illustrations with Acknowledgements Index Figures
170

Design of body assemblies with distributed tasks under the support of parametric associative design (PAD)

Tecklenburg, Gerhard January 2011 (has links)
This investigation identifies how CAD models of typical automotive body assemblies could be defined to allow a continuous optimisation of the number of iterations required for the final design and the number of variants on the basis of Parametric Associative Design (PAD) and how methodologies for the development of surfaces, parts and assemblies of the automotive body can be represented and structured for a multiple re-use in a collaborative environment of concept phase of a Product Evolution (Formation) Process (PEP). The standardisation of optimised processes and methodologies and the enhanced interaction between all parties involved in product development could lead to improve product quality and reduce development time and hence expenses. The fundamental principles of PAD, the particular methodologies used in automotive body design and the principles of methodical development and design in general are investigated. The role which automotive body engineers play throughout the activities of the PEP is also investigated. The distribution of design work in concept teams of automotive body development and important methodologies for the design of prismatic profile areas is critically analysed. To address the role and distribution of work, 25 group work projects were carried out in cooperation with the automotive industry. Large assemblies of the automotive bodies were developed. The requirements for distributed design work have been identified and improved. The results of the investigation point towards a file based, well structured administration of a concept design, with a zone based approach. The investigation was extended to the process chain of sections, which are used for development of surfaces, parts and assemblies. Important methods were developed, optimised and validated with regard to an update safe re-use of 3D zone based CAD models instead of 2D sections. The thesis presents a thorough description of the research undertaken, details the experimental results and provides a comprehensive analysis of them. Finally it proposes a unique methodology to a zone based approach with a clearly defined process chain of sections for an update-safe re-use of design models.

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