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Teses / dissertações sobre o tema "Telecommunications tower"

Autor: Grafiati

Publicado: 29 de julho de 2024

Última modificação: 31 de julho de 2025

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1

Lavado, Katia, Williams Ramos, Edgard Carvallo, Carlos Raymundo, and Francisco Dominguez. "Telecommunications Tower Kits Manufacturing Model Based on Ikea’s Approach to Minimize the Return Due to Missing Parts in a Metalworking Enterprise Kit." Springer Verlag, 2020. http://hdl.handle.net/10757/656126.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.<br>This article proposes a work method reform in the production line of self-supporting telecommunication towers of a Peruvian metalworking enterprise. The problem raised considers the cost overruns caused by the delivery and dispatch of incomplete tower kits. The main process evaluated is the assembly of tower kits, which presented multiple deficiencies that we analyzed with multiple engineering tools using the eight steps of practical process im

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2

Elfashny, Kamal 1960. "Reliability analysis of telecommunication towers." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22649.

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The reliability analysis of telecommunication networks requires an estimate of the probability of failure of antenna-supporting structures. Lacking such estimates, the network planners tend to assume that the probability of failure of towers is negligible. On the other hand, reliability concepts implicit in the codes are not always compatible with those used in reliability analysis of the network, in particular, the implicit probabilities associated with partial load and resistance factors are obtained for idealized structural members and do not address the reliability of the structure as a sy

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3

Ghodrati, Amiri Gholamreza. "Seismic sensitivity of tall guyed telecommunication towers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ29946.pdf.

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4

Assi, Rola. "Seismic analysis of telecommunication towers mounted on building rooftops." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100313.

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This thesis deals with the assessment of seismic accelerations in buildings and the seismic analysis of components installed on building rooftops, with special focus on operational telecommunition towers during and after earthquake shaking.<br>First, acceleration data recorded during the 1999 Chi Chi earthquake from 11 instrumented buildings located in Taiwan were studied. Fundamental building periods were extracted by system identification and compared to those evaluated according to the equations proposed in the 2005 edition of the National Building Code of Canada (NBCC). Next, rooftop accel

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5

Xiao, Justin (Justin T. ). "Technoeconomic analysis of perovskite photovoltaic manufacturing for powering telecommunications Towers." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/119698.

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Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2018.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 71-73).<br>In recent years, metal halide perovskite solar cells have gained traction as a potential competitor to the mature silicon-based solar cells in terms of both cost and performance. Being a young technology, however,

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6

Osgoie, Mahtab Ghafari. "A survey of earthquake-induced damage to telecommunications towers (1999-2011)." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112070.

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Technical Report. Structural Engineering Series No. 2012-15<br>The author and her supervisor, Prof. Ghyslaine McClure, recently worked on a research aimed at validating computational seismic response predictions of a guyed telecommunication mast with ambient vibration measurements. This report summarizes telecommunication towers damages due to recent earthquakes (from 1999 to 2011) as reported in damage reconnaissance accounts openly accessible.

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7

Olsson, Joel, and Junior Asante. "5G Simulation Framework." Thesis, Linköpings universitet, Kommunikationssystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149484.

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From the first generation, 1G, to the fourth generation, 4G, the development and technological advancements in telecommunications network systems have been remarkable. Faster and better connections have opened up for new markets, ideas and possibilities, to that extent that there now is a demand that surpasses the supply. Despite all these advancements made in the mobile communications field most of the concept of how the technology works and its infrastructure has remained the same. This however, is about to change with the introduction of the fifth generation (5G) mobile communication. With

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8

Júnior, Célio Fontão Carril. "Análise numérica e experimental do efeito dinâmico do vento em torres metálicas treliçadas para telecomunicações." Universidade de São Paulo, 2000. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-18022002-154920/.

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Torres metálicas treliçadas tem sido largamente utilizadas como suporte de antenas de microondas. Devido ao baixo peso e a inexistência de terremotos significativos no Brasil, a força de vento é o fator determinante do projeto destas estruturas. Com o objetivo de determinar estas forças e seus efeitos em torres treliçadas foram realizadas investigações numéricas e experimentais. Uma torre de 100 metros foi dimensionada com base nos padrões existentes no Brasil. Examinou-se a resposta dinâmica da estrutura ao longo do vento. Investigaram-se a resposta ressonante, não ressonante e o fator respo

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9

Zampiron, Ivan. "Avaliação das características e desempenho de estruturas para telecomunicações visando o projeto de novo modelo de torre autoportante." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2008. http://hdl.handle.net/10183/17369.

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Durante a implantação do sistema de telefonia celular no Brasil, milhares de torres foram projetadas por profissionais que utilizaram modelos inadequados para a consideração dos efeitos dinâmicos do vento. Devido a este fato, problemas estruturais têm sido freqüentes. Este trabalho é motivado pela falta de material na literatura para auxiliar o projetista a especificar as características geométricas e mecânicas deste tipo de estrutura. São abordados todos os aspectos envolvidos no projeto de uma torre de telecomunicações: normas, características de cada tipo de torre, de aço ou de concreto, al

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10

SANTOS, Ives José Adriano dos. "Análise dinâmica de suportes para antenas em torres metálicas para telecomunicações." Universidade Federal de Pernambuco, 2015. https://repositorio.ufpe.br/handle/123456789/18079.

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Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2016-12-12T15:55:02Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação de mestrado - Análise dinâmica de torres para telecomunicações (Revisão Definitiva).pdf: 5572516 bytes, checksum: 3aeb29a09ea2819f49316a79c5388a73 (MD5)<br>Made available in DSpace on 2016-12-12T15:55:02Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação de mestrado - Análise dinâmica de torres para telecomunicações (Revisão Definitiv

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Tessari, Rodolfo Krul. "Projeto baseado em desempenho de torres metálicas sujeitas à ação do vento." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-08032016-101647/.

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A Engenharia de Ventos Baseada em Desempenho (Performance-based Wind Engineering - PBWE) é uma filosofia de projeto que preconiza identificar e quantificar as incertezas envolvidas no projeto estrutural a fim de assegurar níveis previsíveis de desempenho às edificações, não mais gerenciando o risco através da clássica abordagem determinística. Contudo, devido à recente proposição da metodologia, ainda há poucos estudos relacionados à PBWE, cada qual apresentando diferentes limitações. Assim, o presente trabalho propõe uma adaptação da metodologia da Engenharia de Ventos Baseada em Desempenho à

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12

Chen, Cho-Yen, and 陳卓彥. "Vibration Behavior of Roof-Top Telecommunication Towers." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/53205799265531622217.

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碩士<br>國立成功大學<br>建築學系碩博士班<br>92<br>In Taiwan, the development of seismic design provisions for non-building structure components has lagged behind that of building structures. If codes provide good design suggestion, not only many seismic hazard can be reduced and the lost of fortune can be avoided, but also restoration and reinforcement can be rapidly proceeded after a seismic event. Targeting roof-top telecommunication towers on buildings, this thesis utilizes a structural analysis software to study their dynamic behavior, and provides a revision for roof-top tower seismic design code. 　　This

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13

Chi-Hao, Huang, and 黃啟浩. "Study on the Design of Telecommunication Towers." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/17076042165781806888.

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碩士<br>國立屏東科技大學<br>土木工程系碩士班<br>92<br>The design and construction of telecommunication towers are growing since the use and the need of cellular phones are increasing. In addition to dead loads like tower weight itself, antenna weight or accessory equipments weight, the loads concerned in a tower structural design are wind and earthquake loads. For the publications of wind load in Taiwan so far, there are Tsai in 1996 and Cheng in 2002 studying the wind force codes of building. For earthquake load, there are 1997 version of seismic design code by Architecture and Building Research Institute, Min

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14

Lin, Tan-Long, and 林堂龍. "Design and Evaluation of an Assistance Pedal for Reducing Workers’ Physical Strains on Guyed Telecommunication Towers." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/98170348010856066030.

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碩士<br>朝陽科技大學<br>工業工程與管理系碩士班<br>93<br>A novel pedal is designed, in this study, to facilitate the work on a guyed telecommunication tower by providing extra foot support to a worker. A data logger with six electromyography (EMG) electrodes was utilized to record subjects’ exertions of gastrocnemius, tibialis anterior, and paraspinals muscles while performing antenna mounting tasks on an imitated quadratic tower with or without the pedal. Six experienced and nine unexperienced subjects were tested. Their muscular loads were assessed according to subjects’ ratings of perceived exertion (RPE) a

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15

Kunkolienker, Govind Ramrao. "Lightning Threat to Cables on Tall Towers and the Question of Electrical Isolation." Thesis, 2013. http://etd.iisc.ac.in/handle/2005/3437.

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Electromagnetic effects of lightning currents during a direct hit to tall communication towers, other instrumented towers and chimneys can be hazardous to associated cables, as well as, electrical and electronics systems. The standard practice in telecommunication and other related fields is to bond the cable sheath to the tower and ground connection is made before it enters the base station. However, in some specific cases when power, signal and data logging cables are to be supported on the same tower, isolation of power cables is demanded. In a totally different situation, attempts are als

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16

Kunkolienker, Govind Ramrao. "Lightning Threat to Cables on Tall Towers and the Question of Electrical Isolation." Thesis, 2013. http://etd.iisc.ernet.in/2005/3437.

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Electromagnetic effects of lightning currents during a direct hit to tall communication towers, other instrumented towers and chimneys can be hazardous to associated cables, as well as, electrical and electronics systems. The standard practice in telecommunication and other related fields is to bond the cable sheath to the tower and ground connection is made before it enters the base station. However, in some specific cases when power, signal and data logging cables are to be supported on the same tower, isolation of power cables is demanded. In a totally different situation, attempts are als

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17

Martins, Marco Paulo Batista. "Trabalhos em altura realizados em torres de telecomunicações, mastros, coberturas e fachadas de edifícios." Master's thesis, 2021. http://hdl.handle.net/10400.26/38784.

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A realização deste trabalho tem como objetivo principal analisar as condições de segurança na realização de trabalhos em altura em torres de telecomunicações, mastros, coberturas e fachadas de edificos, onde a falha humana ou a falha material pode originar acidentes muito graves ou mortais. Como objetivos específicos foram definidos elaborar uma análise estatística sobre acidentes de trabalho ocorridos em trabalhos em altura com a especificidade de torres de telecomunicações, mastros, coberturas e fachadas de edifícios; analisar duas situações específicas de trabalho em termos de identificação

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