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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.
421

Obytný soubor Troubsko - stavebně technologický projekt / Residential complex Troubsko - construction technology plan

Jurák, Ondřej January 2022 (has links)
The aim of the diploma thesis is to elaborate a selected part of the construction technology plan for the Residential complex Troubsko. Specifically, it is focused on a pair of mirror-image apartment buildings marked SO 12.11 and SO 12.12. The building is located in the area of a former pond, which was backfilled in the past. The foundation strips are therefore placed on vibrated gravel pillars. The structure of the building is proposed as a traditional masonry building, the horizontal load-bearing structures consists of the cast-in-place reinforced concrete floor and the roof structure is designed as a flat roof. The thesis consists in a technical report pertaining to the construction technology plan, evaluation of transport routes, technological regulation for the cast-in-place reinforced concrete floor above 1PP and a time schedule for rough construction. Also elaborated are construction site equipment including a drawing and text part, a control and test plan, itemized budget with bill of quantities for rough construction, design of machine sets and work safety solutions are elaborated.
422

Bytové domy v Bučovicích, objekt X - stavebně technologický projekt / Apartment houses in Bučovice, building X – building technology project

Krkošková, Adéla January 2022 (has links)
The subject of diploma thesis is the elaboration a selected part of construction technological project of an apartment houses in Bučovice. The selected part iswith the apartment building SO 01.X, on which rough construction will be solved . The apartment building consists of three above ground floors and is partially basement. An important part of the thesis is an item budget of the rough construction and the time schedule. The diploma thesis also deals with construction site equipment design, a study of the implementation of the main technological stages, design of the machinery, solution of the transport routes, technological prescription for selection operation, the protection of health and safety at work and environmental requirements for the construction of the building SO 01.X.
423

Výstavní pavilon / Exhibition pavilion

Španihel, Jiří January 2012 (has links)
The subject of the diploma thesis is design and examination of supporting steel structure of the exhibition pavilion situated at the Brno Exhibition Centre, including a comparison with the second variant. The design emphasis has been placed on keeping the architectural character of building related to its purpose. The structure consists of 11 sections shaped as elliptical arcs, formed by truss frames with variable length of semi-axes, while the largest size (the smallest) is 13 m (7 m) for minor semi-axis and 20 m (14 m) for the main semi-axis, height is 16 m (10 m) and distance of support 38.92 m (25.30 meters). For the analysis of internal forces has been assembled spatial bar shaped model. Cladding is made of Kalzip system.
424

Přístavba objektu pro tělesnou a taktickou přípravu v Brně – stavebně technologický projekt / Extension of the building for physical and tactical training in Brno – construction technological project

Štípa, David Unknown Date (has links)
The aim of the master thesis is a technological solution of structure for Police of Czech republic. The main aim of the thesis is the support construction and the ceiling contruction. The thesis also includes a site layout with broader relations to traffic routes, budget for the technological procedure, technical report, technical report for site equipment, technological directive for the construction of ceiling and ground works, Inspection and check plan, time schedule, concept of machinery setup and safety and protection of health during work
425

Bytový komplex Kadetka, příprava realizace stavby / Apartment Complex Kadetka, Preparation for Building Realisation

Páleník, Tomáš Unknown Date (has links)
The subject of the diploma thesis is to elaborate a selected part of the construction technology project for Apartment complex Kadetka - preparation for building realisation. Specifically, this is an underground garage and object C. In the course of the creation of project, the objects A and B, incorporated in the project of the construction site equipment, were also taken into account. The content of the work is a technical report to the construction technology project, evaluation of transport routes, time and financial plan, individual realization phases of the main building phase, design of the main building machine and mechanisms, time schedule for rough construction, plan for securing material resources, elaboration of technology regulations for underground monolithic reinforced concrete structures and check and test plan. The thesis also includes an item budget for the apartment house made with Build Power S software.
426

Beiträge zur Richtighaltung von Kreisformmessgeräten

Miethling, Klaus-Dietmar 10 June 1988 (has links)
In der Arbeit werden normativ-technische und verfahrenstechnische Voraussetzungen zur Richtighaltung von Kreisformmessgeräten dargelegt. Dazu wird ein umfassendes Begriffssystem für die allgemeine Beschreibung von Bewegungsabweichungen von bewegten Bauteilen an Werkzeugmaschinen oder Formmessgeräten, z.B. Kreisformmessgeräten, als Grundlage für ihre Tolerierung und Messung vorgeschlagen. Bekannte Messverfahren zur Bestimmung von Rotationsabweichungen der Spindel von Kreisformmessgeräten werden theoretisch und praktisch untersucht. Es wird ein neues Messverfahren, das kontinuierliche Relativlagenmessverfahren, entwickelt und ebenfalls untersucht. Die untersuchten Messverfahren zur Bestimmung von Rotationsabweichungen ermöglichen verschiedene Messunsicherheiten bis zu weniger als 0,02 µm. Vorschläge für die Gestaltung des Prüfschemas zur Richtighaltung von Kreisformmessgeräten werden unterbreitet. auch unter: Zentralbibliothek/Magazin/MPF1443:Verzeichnis der verwendeten Abkuerzungen V Vorwort VII 1. Einleitung 1 2. Grundlagen der radiusbezogenen Kreisformmessung 2 2.1. Eliminierung der Exzentrizitaet 2 2.2. Messunsicherheit der Kreisformmessung 3 2.3. Bewegung eines rotierenden Teiles 3 3. Begriffe und Definitionen zur Bewegung eines Teiles 5 3.1. Allgemeine Bemerkungen 5 3.2. Internationaler Stand 9 3.2.1. Bekannte Begriffe und Definitionen fuer die Bewegung eines Teiles 10 3.2.2. Bekannte Begriffe und Definitionen fuer die Bewegung eines rotierenden Teiles 11 3.2.3. Einschaetzung 14 3.3. Aufgabenstellung zur Erarbeitung von Begriffen und Definitionen 15 3.4. Vorschlag fuer neue Begriffe und Definitionen 16 3.4.1. Vorbemerkungen 16 3.4.2. Begriffe fuer die Verschiebung eines Punktes eines bewegten Teiles 19 3.4.2.1. Begriffe fuer die allgemeine Bewegung 19 3.4.2.2. Begriffe fuer die Rotation 21 3.4.2.3. Begriffe fuer die Translation 23 3.4.2.4. Erlaeuterungen zu den Begriffen 25 3.4.3. Begriffe fuer die Verdrehung einer Strecke eines bewegten Teiles 31 3.4.3.1. Begriffe fuer die allgemeine Bewegung 31 3.4.3.2. Begriffe fuer die Rotation und Translation 37 3.4.3.3. Erlaeuterungen zu den Begriffen 37 3.5. Vergleich und Einschaetzung der neuen Definitionen 43 3.6. Zeichnungsangaben von Bewegungs- und Verdrehungsabweichungen 49 4. Messverfahren zur Bestimmung von Rotationsabweichungen 51 4.1. Theoretische Untersuchungen 52 4.1.1. Vergleichsmessverfahren 53 4.1.2. Mehrlagenmessverfahren 54 4.1.2.1. Umkehrmessverfahren 55 4.1.2.2. Relativlagenmessverfahren 57 4.1.2.2.1. Relativlagenmessverfahren mit zwei Messstellungen 58 4.1.2.2.2. Relativlagenmessverfahren mit punktweiser Berechnung 59 4.1.2.2.3. Relativlagenmessverfahren mit Fourier-Reihen- Berechnung 60 4.1.2.3. Kontinuierliches Relativlagenmessverfahren 61 4.1.3. Weitere Messverfahren 64 4.1.3.1. Frequenztrennmessverfahren 64 4.1.3.2. Fotodiodensignalmessverfahren 65 4.1.4. Einschaetzung 66 4.2. Messtechnische Untersuchungen 67 4.2.1. Relativlagenmessverfahren mit punktweiser Berechnung 68 4.2.2. Vergleichsmessverfahren 73 4.2.3. Kontinuierliches Relativlagenmessverfahren 76 4.2.4. Einschaetzung 86 4.3. Messverfahren zur Richtighaltung von Kreisformmessgeraeten 87 5. Metrologische Richtighaltung 88 5.1. Pruefschema fuer Kreisformmessgeraete 90 5.1.1. Spezialnormal der Laenge fuer die Kreisform 91 5.1.2. Referenznormale 91 5.1.3. Arbeitsmessmittel 92 5.2. Pruefvorschriften fuer Kreisformmessmittel 93 5.2.1. Pruefvorschriften fuer die Eichung der Haupt- normale 93 5.2.2. Betriebliche Pruefvorschriften fuer Kreisformmessgeraete 93 5.3. Einschaetzung 95 6. Weitere Aufgaben 95 Verzeichnis der Anmerkungen 97 Literaturverzeichnis 98 Verzeichnis der Abbildungen 105 Verzeichnis der Anlagen 108 Anlagen 110 Thesen
427

A plan-do-check-act framework for WEEE and RoHS : a model for implementing WEEE and RoHS by integrating eco-design factors and activities into business operation and strategy.

El-Gomla, Randa A.M. January 2011 (has links)
Eco-design is relatively new and fast growing field of research due to its vital importance to the manufacturing industry and its related environmental issues such as reducing waste, and CO2 emission. A major EU programme relating to the environment is the waste of Electrical and Electronic Equipment (WEEE) directive. The (WEEE) directive specifies ten categories and a voltage range which is up to 1.000 volts AC or 1.500volts DC. The developed framework came for the implementation of Eco-design principles that helps to take into account the adaption of the (WEEE) directive and the restriction of hazard substances (RoHS) used in electrical and electronic equipments. As a result of identify gaps and needs such as a lack of a comprehensive Eco-design framework and the need to integrate it to the normal business operation. In this research the PDCA framework for Eco-design and WEEE directive will be discussed. The framework will encompass all of the Eco-design¿s implementation and integration factors and activities such as WEEE and RoHS directives, Eco-design management, Environmental legislations, Eco-design tools and considerations. The literature review covers the topic of Eco-design¿s related issues, and WEEE and RoHS directives rules. Based on comprehensive questionnaire survey of Eco-design, WEEE and RoHS issues and activities among a sample of environmentally aware companies, statistical analysis is carried out using SPSS software. Then the findings of the survey triangulated with the findings of the literature review formed the basis of the design and implementation plan of the proposed framework
428

Implementation of Low-Density Parity-Check codes for 5G NR shared channels / Implementering av paritetskoder med låg densitet för delade 5G NR kanaler

Wang, Lifang January 2021 (has links)
Channel coding plays a vital role in telecommunication. Low-Density Parity- Check (LDPC) codes are linear error-correcting codes. According to the 3rd Generation Partnership Project (3GPP) TS 38.212, LDPC is recommended for the Fifth-generation (5G) New Radio (NR) shared channels due to its high throughput, low latency, low decoding complexity and rate compatibility. LDPC encoding chain has been defined in 3GPP TS 38.212, but some details of LDPC encoding chain are still required to be explored in the MATLAB environment. For example, how to deal with the filler bits for encoding and decoding. However, as the reverse process of LDPC encoding, there is no information on LDPC decoding process for 5G NR shared channels in 3GPP TS 38.212. In this thesis project, LDPC encoding and decoding chains were thoughtfully developed with MATLAB programming based on 3GPP TS 38.212. Several LDPC decoding algorithms were implemented and optimized. The performance of LDPC algorithms was evaluated using block error rate (BLER) v.s. signal to noise ratio (SNR) and CPU time. Results show that the double diagonal structure-based encoding method is an efficient LDPC encoding algorithm for 5G NR. Layered Sum Product Algorithm (LSPA) and Layered Min-Sum Algorithm (LMSA) are more efficient than Sum Product Algorithm (SPA) and Min-Sum Algorithm (MSA). Layered Normalized Min-Sum Algorithm (LNMSA) with proper normalization factor and Layered Offset Min-Sum Algorithm (LOMSA) with good offset factor can optimize LMSA. The performance of LNMSA and LOMSA decoding depends more on code rate than transport block. / Kanalkodning spelar en viktig roll i telekommunikation. Paritetskontrollkoder med låg densitet (LDPC) är linjära felkorrigeringskoder. Enligt tredje generationens partnerskapsprojekt (3GPP) TS 38.212, LDPC rekommenderas för den femte generationens (5G) nya radio (NR) delade kanal på grund av dess höga genomströmning, låga latens, låga avkodningskomplexitet och hastighetskompatibilitet. LDPC kodningskedjan har definierats i 3GPP TS 38.212, men vissa detaljer i LDPC kodningskedjan krävs fortfarande för att utforskas i Matlabmiljön. Till exempel hur man hanterar fyllnadsbitar för kodning och avkodning. Men som den omvända processen för LDPC kodning finns det ingen information om LDPC avkodningsprocessen för 5G NR delade kanaler på 3GPP TS 38.212. I detta avhandlingsprojekt utvecklades LDPC-kodning och avkodningskedjor enligt 3GPP TS 38.212. Flera LDPC-avkodningsalgoritmer implementerades och optimerades. Prestandan för LDPC-algoritmer utvärderades med användning av blockfelshalt (BLER) v.s. signal / brusförhållande (SNR) och CPU-tid. Resultaten visar att den dubbla diagonala strukturbaserade kodningsmetoden är en effektiv LDPC kodningsalgoritm för 5G NR. Layered Sum Product Algorithm (LSPA) och Layered Min-Sum Algorithm (LMSA) är effektivare än Sum Product Algorithm (SPA) och Min-Sum Algorithm (MSA). Layered Normalized Min-Sum Algorithm (LNMSA) med rätt normaliseringsfaktor och Layered Offset Min-Sum Algorithm (LOMSA) med bra offsetfaktor kan optimera LMSA. Prestandan för LNMSA- och LOMSA-avkodning beror mer på kodhastighet än transportblock.
429

Design and Development of a CubeSat Hardware Architecture with COTS MPSoC using Radiation Mitigation Techniques

Vasudevan, Siddarth January 2020 (has links)
CubeSat missions needs components that are tolerant against the radiation in space. The hardware components must be reliable, and it must not compromise the functionality on-board during the mission. At the same time, the cost of hardware and its development should not be high. Hence, this thesis discusses the design and development of a CubeSat architecture using a Commercial Off-The- Shelf (COTS) Multi-Processor System on Chip (MPSoC). The architecture employs an affordable Rad-Hard Micro-Controller Unit as a Supervisor for the MPSoC. Also, it uses several radiation mitigation techniques such as the Latch-up protection circuit to protect it against Single-Event Latch-ups (SELs), Readback scrubbing for Non- Volatile Memories (NVMs) such as NOR Flash and Configuration scrubbing for the FPGA present in the MPSoC to protect it against Single-Event Upset (SEU)s, reliable communication using Cyclic Redundancy Check (CRC) and Space packet protocol. Apart from such functionalities, the Supervisor executes tasks such as Watchdog that monitors the liveliness of the applications running in the MPSoC, data logging, performing Over-The-Air Software/Firmware update. The thesis work implements functionalities such as Communication, Readback memory scrubbing, Configuration scrubbing using SEM-IP, Watchdog, and Software/Firmware update. The execution times of the functionalities are presented for the application done in the Supervisor. As for the Configuration scrubbing that was implemented in Programmable Logic (PL)/FPGA, results of area and latency are reported. / CubeSat-uppdrag behöver komponenter som är toleranta mot strålningen i rymden. Maskinvarukomponenterna måste vara pålitliga och funktionaliteten ombord får inte äventyras under uppdraget. Samtidigt bör kostnaden för hårdvara och dess utveckling inte vara hög. Därför diskuterar denna avhandling design och utveckling av en CubeSatarkitektur med hjälp av COTS (eng. Custom-off-The-Shelf) MPSoC (eng. Multi Processor System-on-Chip). Arkitekturen använder en prisvärd strålningshärdad (eng. Rad-Hard) Micro-Controller Unit(MCU) som Övervakare för MPSoC:en och använder också flera tekniker för att begränsa strålningens effekter såsom kretser för att skydda kretsen från s.k. Single Event Latch-Ups (SELs), återläsningsskrubbning för icke-volatila minnen (eng. Non-Volatile Memories) NVMs som NOR Flash och skrubbning av konfigurationsminnet skrubbning för FPGA:er i MPSoC:en för att skydda dem mot Single-Event Upsets (SEUs), och tillhandahålla pålitlig kommunikation mha CRC och Space Packet Protocol. Bortsett från sådana funktioner utför Övervakaren uppgifter som Watchdog för att övervaka att applikationerna som körs i MPSoC:en fortfarande är vid liv, dataloggning, och Over- the-Air-uppdateringar av programvaran/Firmware. Examensarbetet implementerar funktioner såsom kommunikation, återläsningsskrubbning av minnet, konfigurationsminnesskrubbning mha SEM- IP, Watchdog och uppdatering av programvara/firmware. Exekveringstiderna för utförandet av funktionerna presenteras för den applikationen som körs i Övervakaren. När det gäller konfigurationsminnesskrubbningen som implementerats i den programmerbara logiken i FPGA:n, rapporteras area och latens.
430

Do Long Work Hours Impede Workers’ Ability to Obtain Health Services?

Yao, Xiaoxi 10 October 2014 (has links)
No description available.

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