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Letteratura scientifica selezionata sul tema "Telecommunications tower"

Autore: Grafiati

Pubblicato: 29 luglio 2024

Ultima modifica: 30 luglio 2024

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Articoli di riviste sul tema "Telecommunications tower"

Singh, N. P. "Competitive Landscape of Mobile Telecommunications Tower Companies in India". International Journal of Interdisciplinary Telecommunications and Networking 2, n. 1 (gennaio 2010): 49–81. http://dx.doi.org/10.4018/jitn.2010010104.

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With the entry of 3G and WiMAX players, the Indian mobile subscriber base is expected to reach 1110 million by the end of 2015. To meet mobile infrastructure demand, India will require approximately 350,000 to 400,000 mobile telecommunications towers in the next 7 to 8 years. Presently only 40% of mobile telecommunications towers are shared in India. The high growth of subscribers and initial cost of mobile telecommunications towers and license conditions will force mobile network operators to share infrastructure with other mobile network operators, specifically with new operators. The Indian government has allowed sharing of passive and active components of mobile telecommunication infrastructure. With the changing demand of the telecommunications infrastructure, many new telecommunications tower business entities and companies and mobile telecommunications tower business models are being explored. In this paper, the author presents the landscape of the mobile telecommunications tower industry in India, which consists of four types of companies and trends with respect to the strategies of telecommunication tower companies, especially tenancy ratio. Emerging features of the mobile telecommunication towers industry in India are also presented.

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Widayanto, Widayanto, Leroy Samy Uguy e Maya Puspita Dewi. "Evaluasi Kebijakan tentang Penyelenggaraan Menara Telekomunikasi terhadap Penyedia Menara Telekomunikasi". Jurnal Manajemen dan Ilmu Administrasi Publik (JMIAP) 5, n. 1 (1 marzo 2023): 105–12. http://dx.doi.org/10.24036/jmiap.v5i1.597.

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Along with the growth of cellular phone subscribers in Indonesia, cellular network operators continue to strive to build infrastructure to establish broader service coverage areas, thus, increasing the quality of service. Regional Rules & Regulations in DKI Jakarta are intended to regulate the BTS towers within an area. However, they become a barrier for Telecommunications operators to meet the needs of good networks/signals. Changes in the zoning of telecommunication towers can meet the needs of operators and increase customer satisfaction. This study uses qualitative method analysis with an interview. The results show that policy evaluation regarding the implementation of telecommunication towers has yet to meet the needs of telecommunication tower providers (Tower Providers) and has been shown to cause areas that operator signal networks cannot cover. This situation impacts the satisfaction of particular customers and can threaten the business continuity of the operator. Conclusion of the Policy of the Governor of the Special Capital Region of Jakarta Number 14 of 2014, concerning the Implementation of Telecommunication Towers for Telecommunication Tower Providers, the annexse to the zoning of telecommunication towers needs to be reviewed because it has not been able to meet the needs of telecommunication tower providers and can pose a threat to business continuity.

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Anggraeny, Shinta Noor, Trisna Ayu Oktavia e Sugiharto Sugiharto. "Analysis of Telecommunication Tower Accounting at PT. Sarana Menara Nusantara Tbk. Period 2014-2015". Jurnal AKSI (Akuntansi dan Sistem Informasi) 5, n. 1 (7 maggio 2020): 13–18. http://dx.doi.org/10.32486/aksi.v5i1.419.

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This study aims to determine the accounting treatment of telecommunication tower companies, especially PT. Sarana Menara Nusantara Tbk. which recognized telecommunications towers as fixed assets in 2014 and recognized as investment properties in 2015 and the impact of their accounting for that period.This type of research is qualitative research, using interpretive descriptive methods. Data presented in descriptive form without processing with other analytical techniques. With this research, information is expected to equalize perceptions related to differences that occur regarding differences in recognition of telecommunications towers and to assist companies in evaluating performance, especially in terms of achieving earnings.

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Fadhilah, Nurul. "Kebijakan Pemerintah Bungo Dalam Menjalankan Peraturan Daerah Nomor 25 Tahun 2010 Tentang Pengaturan Retribusi Menara Telekomunikasi Dengan Tujuan Mendukung Penerimaan Pendapatan Daerah Telah Menjadi Fokus Penelitian Di Dinas Perhubungan Kabupaten Bungo." Nomico 1, n. 2 (28 aprile 2024): 24–29. http://dx.doi.org/10.62872/v8rbqg90.

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This study was conducted at the Transportation and Informatics Service of Bungo Regency over a one-month period, specifically in February 2016. Its objective was to examine, describe, and analyze the implementation of telecommunications tower levies managed by the Bungo Regency Transportation Service. It also aimed to investigate the efforts made by the service to increase Regional Original Income through these levies and to identify and analyze the obstacles faced by the service in raising telecommunications tower levies in Bungo Regency to enhance Regional Original Income (PAD). Employing a descriptive method with a qualitative approach, the research sought to understand the issues occurring at a particular place and time. The findings of the study revealed that management, often referred to as administration, is a systematic process aimed at achieving goals through planning, organizing, activating, and supervising. The efforts undertaken by the Bungo Regency Transportation and Informatics Service included outreach activities, enhanced supervision, establishment of cellular zones, and improvement of facilities and infrastructure for levy payment. The underlying issues in formulating levy policies to regulate telecommunications towers in Bungo Regency included the proliferation of such towers potentially turning Bungo Regency into a tower city. Additionally, ensuring legal certainty for entrepreneurs was crucial, ensuring clarity for telecommunications tower owners regarding imposed levies. Non-compliant tower construction concerning spatial planning aspects further complicated the policy formulation, with the levy intended to contribute to increased regional income for Bungo Regency.

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Ananda, Devi Rizki Dwi, e Rahadian Kurniawan. "Management Information System For Telecommunication Tower Fee Payment At The Department Of Communication And Informatics Of Mempawah Regency". Journal of Social Research 2, n. 8 (18 luglio 2023): 2564–77. http://dx.doi.org/10.55324/josr.v2i8.1310.

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The development of telecommunications technology, such as BTS towers, has provided significant benefits to society. However, the Communication and Information Office (DISKOMINFO) of Mempawah District still faces challenges in managing telecommunications tower data using separate Microsoft Excel files. This causes the data retrieval process to be slow, hinders data changes, and increases the risk of errors. In order to address this problem, the Information Technology Division of DISKOMINFO Mempawah District has developed a web-based management information system to monitor and expedite the calculation of fees and the issuance of SKRD (Tower Utilization Permit). The waterfall development method was chosen to ensure a clear understanding of the system requirements before starting development, and to ensure that each phase is completed before moving on to the next phase. It is expected that the developed telecommunications tower fee payment system will support DISKOMINFO in ensuring timely fee payments, which are crucial for the development of the telecommunications industry and the overall economy.

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Wysseier, Ruedi. "Bantiger Telecommunications Tower, Switzerland". Structural Engineering International 7, n. 2 (maggio 1997): 78–79. http://dx.doi.org/10.2749/101686697780494941.

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Sari, Novita, e Andrian Noviardy. "Retribution Collection and Tellecomunication Tower Control on Increased Original Local Government Revenue in Banyuasin District". Assets : Jurnal Ilmiah Ilmu Akuntansi, Keuangan dan Pajak 8, n. 1 (31 gennaio 2024): 40–47. http://dx.doi.org/10.30741/assets.v8i1.1125.

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The aim of this research is to identify how retribution and control of telecommunications towers affect the increase in regional foreign income in Banyuasin Regency. The data sources in this research are secondary data, namely Surat Tanda Retribusi Daerah (STRD) and Surat Tanda Setoran (STS) at the Banyuasin Regency Diskominfo-SP. The research method used in this study is descriptive qualitative. There are three stages in this method: data condensation, data presentation, and verification or conclusions. The percentage of telecommunications tower control retribution collected by the Banyuasin Regency Government in 2020 has exceeded the revenue target, namely 100.23%, in 2021 it increased to 101.60%, while in 2022 it decreased to 84.89%. Even though there will be a decline in 2022, the realization of revenues in 2020 and 2021 has reached or even exceeded the targeted revenues. has been above 100%, this shows that the collection of telecommunications tower control retribution has been achieved very effectively. Meanwhile, the contribution of retribution and control of telecommunications towers to increasing PAD during 2020-2022 is still below 10%, so the criteria are very low.

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Benyamin, Sam, Nachrowie Nachrowie e Wahyu Dirgantara. "Purwarupa Sistem Monitoring Kemiringan Menara Base Transceiver Station (BTS) Berbasis Arduino sebagai Solusi Maintenance Menara". JASIEK (Jurnal Aplikasi Sains, Informasi, Elektronika dan Komputer) 4, n. 2 (28 dicembre 2022): 85–92. http://dx.doi.org/10.26905/jasiek.v4i2.9174.

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Menara Base Transceiver Station (BTS) is a telecommunications station whose main function is to facilitate wireless communication between communication devices (clients) and network operators. BTS towers are usually built in densely populated residential areas, due to distributing telecommunications networks. Because it was built in a densely populated settlement, it is necessary to pay attention to the feasibility maintenance of the BTS tower. BTS tower maintenance is intended so that BTS towers can work optimally and reduce the risk of collapsing. The prototype will be made with several components, namely the MPU-6050 sensor, Arduino Uno and LCD. MPU-6050 to detect the tilt of the BTS tower. After 10 tests of pitch and roll angles, the prototype of the BTS tilt has an average error of 1.077 for pitch angle and 1.703 for roll angle. These results are still valid in monitoring the angle of inclination of the BTS

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Paula, Unathan Kayke de, Luiz Fernando Rasuck de Carvalho, Elvys Dias Reis e Deysiane Antunes Barroso Damasceno. "Static and dynamic analysis of telecommunication towers subjected to wind". Research, Society and Development 11, n. 4 (15 marzo 2022): e18611427279. http://dx.doi.org/10.33448/rsd-v11i4.27279.

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The expansion of the telecommunications sector in Brazil in recent years and the consequent increase in demand for telecommunication towers open space for a discussion about the guidelines to be taken during the execution of projects of this type of structure. Because they are light and slender structures, wind loads become preponderant for the design of these towers and wind analysis is an important topic to be discussed. Thus, this work analyzes design aspects employing numerical modeling and parametric studies. The Brazilian standard NBR 6123:1988 was used to obtain the wind speed and its static and dynamic loads, to compare the responses generated by each of the methods. Then, this process was repeated following the European standard IEC 60826:2017, to compare the results between the two standards methods. A parametric study was also performed with towers of different heights to better understand the structure behavior. The tower responses were obtained using the finite element software SAP2000, in which a lattice tower model with a constant square section was developed, to which the wind loads calculated according to the aforementioned standards were applied. The results showed that each analysis method generates considerably different results, revealing that this is a point that should be very well studied during the design of telecommunication towers.

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H.D, Ni Ketut, Ayurisa Monaretta Konadi e Fauzia Haz. "Analisis Pengaruh Penggunaan AAU pada Swap RRU terhadap Kualitas Layanan Telekomunikasi di Wilayah Pusdikom Cibeureum Cimahi". EPSILON: Journal of Electrical Engineering and Information Technology 21, n. 2 (13 febbraio 2024): 104–17. http://dx.doi.org/10.55893/epsilon.v21i2.109.

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Telecommunications technology continues to undergo advancements. The enabler of communication in the field of telecommunications is the telecommunications equipment installed on a BTS tower. These devices are constantly being updated to improve the service provided by the provider to meet the needs of customers. One of the network technologies currently used is 4G LTE. To enhance the network service, one of the measures taken is performing a swap or upgrade of the telecommunications equipment on a BTS tower. The upgrade of telecommunications equipment is also influenced by the population in the vicinity of the BTS tower. This allows for the replacement of telecommunications devices with ones that have broader coverage and better signal quality. This research, we discuss the issue of network capacity shortage in the Cibeureum area, South Cimahi. This is indicated by the addition of AAUs to the BTS tower in Pusdikom, Cibeureum. This research found data that South Cimahi is the most densely populated area in the city compared to other districts. Therefore, the addition of AAUs is highly effective for this issue. It is known that the AAUs are added to replace the RRUs on the tower. This is because the capacity and transmission channels of AAUs are greater than RRUs. The addition of AAU with 32T32R specifications to the tower improves signal quality with the following parameter values: RSRP(dbm): -68, -72, -76; RSRQ(db): -11, -10, -10; and SNR(db): 1, 1, 4. These values are categorized as good, indicating that the addition of AAU to the tower can effectively increase network capacity and transmission channels, thereby improving network quality in the area.

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Più fonti

Tesi sul tema "Telecommunications tower"

Lavado, Katia, Williams Ramos, Edgard Carvallo, Carlos Raymundo e 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.
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 improvement. We evaluated by a large scale definition the work table in the assembly and stacking of parts, defining by specific zones each part type and profile, and optimizing the total process times so as not to affect the scheduled dispatches. Thus, it is possible to minimize the number of customer returns.

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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 system. Advances in structural reliability, combined with more extensive climatologic data, can be used to implement a probabilistc approach for the design of towers.
The objective of this study is to propose a procedure for calculating the probability of mechanical failure of self-supported telecommunication towers. The procedure introduces the concept of calculating the conditional probability of failure which can be used with different joint distributions of wind and ice with a minimum of computations. As an example, the methodology is applied to the CEBJ tower in James Bay. The structure is assumed to behave linearly and to be statically determinate. In consequence, the structure can be modelled as a weakest link model.
The study demonstrates the possibility of estimating the probability of failure for the whole structure using a rational approach. The critical members of the structure and the relative importance of each of the design parameters with respect to the probability of failure are identified in order to simplify the reliability analysis. The probability of failure is most sensitive with respect to the joint probability distribution function of wind speed and ice thickness. Upper and lower bound estimates of the probability of failure are presented for different assumption in the joint distribution. These results indicate the need for a better model for the environmental loads.

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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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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.
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 acceleration spectra and time histories were evaluated using 3-D finite element building models; three models of instrumented buildings were calibrated using accelerograms from the Chi Chi earthquake and the fourth model is a building located in downtown Montreal. The building models were subjected to 44 historical strong motion accelerograms and 30 synthetic accelerograms compatible with the target uniform hazard spectra specified in NBCC 2005 for Montreal. Based on both the experimental and numerical results, a maximum rooftop acceleration amplification of 4 is proposed for low/medium rise buildings and 3 for flexible high-rise buildings (T > 1.7 s).
In the second stage, a simplified method for the prediction of seismic shear forces and overturning moments at the base of self-supporting steel lattice telecommunication towers mounted on building rooftops is presented. The proposed method involves the estimation of four parameters: the rooftop seismic acceleration, the mass distribution profile of the tower along its height, the maximum acceleration amplification at the tower top, and the fundamental sway mode shape of the tower on a rigid base. The method was validated by means of numerical results of nine generated building-tower combinations composed of three towers assumed to be mounted on three of the building models studied in the first stage of the research. The building-tower combinations were subjected to the same sets of earthquake records used for the prediction of accelerations. It was found the proposed method yields conservative results in all the cases analyzed.
In addition, the empirical component force amplification factor for telecommunication towers as proposed in the NBCC 2005 was compared to the factors evaluated for the towers of the 16 building-tower combinations. Improved component force amplification factors based on rational analysis are proposed.

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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.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 71-73).
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, means little is known about its true market value. In order to understand this, it is important to both get an accurate estimate of manufacturing cost and explore potential applications. In this thesis, we develop a Monte Carlo cost analysis method and apply it towards a realistic perovskite module manufacturing sequence today. We determine a nominal cost estimate of $101.7/m2, which for a 15% efficient module comes out to $0.68/W. Compared to silicon, which hovers around $0.40/W, this is rather competitive, since most of the installed system cost comes from non-module components such as installation labor and racking. With the lightweight and flexible form factor of perovskite solar modules, new applications become possible. One such application is the installation of perovskite photovoltaics (PV) vertically on telecommunications towers. Since such towers cannot support the weight of conventional silicon PV, this is a potential market for perovskite PV that silicon cannot satisfy. Using HOMER microgrid simulation software, we determine that it is financially feasible to install vertical PV in countries with high diesel prices and low grid reliability, such as India.
by Justin Xiao.
M. Eng.

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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
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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Olsson, Joel, e 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 the introduction of 5G much of the technology introduced will be different from that of previous generations. This change extends to include the entire infrastructure of the mobile communications system. With these major changes, many of the tools available today for telecommunications network evaluation do not really suffice to include the 5G network standard. For this reason, there is a need to develop a new kind of tool that will be able to include the changes brought by this new network standard. In this thesis a simulation framework adapted for the next generation telecommunication standard 5G is set to be developed. This framework should include many of the characteristics that set 5G aside from previous generations.

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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 resposta de rajada. Concluiu-se que a resposta ressonante não é significativa para este tipo de estrutura. Compararam-se os modelos de DAVENPORT (1993), da norma Brasileira NBR6123/88 e o processo do vento sintético de FRANCO (1993). Uma investigação experimental foi realizada para analisar os coeficientes de força em uma seção da torre estudada. Os experimentos foram realizados no Boundary Layer Wind Tunnel Laboratory (BLWTL) da University of Western Ontario (UWO), Canadá. Foram analisados o ângulo de incidência do vento; o índice de área exposta; o efeito de proteção; o fator de interferência no coeficiente de arrasto de antenas de microondas, devido à proximidade da torre e a influência da turbulência do vento. Os resultados mostraram boa concordância com os valores obtidos em diferentes normas existentes.
With todays expanding communication systems, a large number of lattice towers to support cellular and microwave antennas are being constructed in Brazil. Due to the lightweight of these structures, wind forces are the primary concern in the design. With the objective of determining these forces and their effects upon latticed towers, a numerical and experimental investigation is accomplished. A 100-meter tower is designed based on existing patterns of latticed towers in Brazil. The along wind dynamic response is analysed. The resonant, background response and gust factor are examined. It is concluded that the resonant response is not significant for this type of structure. The DAVENPORT (1993) method, the Brazilian code NBR6123/88 and the process of the synthetic wind of FRANCO (1993) are compared. An experimental investigation is accomplished to analyse the force coefficients on a section of the lattice tower studied. The tests were performed at the Boundary Layer Wind Tunnel Laboratory, University of Western Ontario (UWO), Canada. The wind incidence angle; the tower solidity; the shielding effect; the interference factor upon the drag coefficient of the microwave antennas, due to the tower proximity and the influence of the wind turbulence are analysed. The results are ii good agreement with the values obtained in different existent codes.

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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, além de uma pesquisa junto a empresas fabricantes com o objetivo de levantar dados sobre o peso dos diferentes tipos de torre. Este tipo de informação é de grande valia para a avaliação da viabilidade de projetos ou para o desenvolvimento de novos tipos de estruturas. Diante das vantagens e desvantagens das soluções existentes, este trabalho apresenta um modelo de torre que une a alta relação momento de inércia - área de seção transversal das torres em treliças ao baixo carregamento devido ao vento dos postes, para alturas de 40 m e 70 m. A viabilidade destes projetos é indicada pela comparação de seu peso com o de estruturas pesquisadas. Após descrever natureza do vento e as formas de obter e aplicar as forças dinâmicas associadas, além da obtenção de resposta de estruturas a estas excitações, é proposto um código numérico para a realização deste tipo de análise. Neste código, o processo de integração numérica é executado tanto pelo método de Newmark, como por Diferenças Finitas. Pode ser considerada não-linearidade geométrica pelo efeito do esforço axial e da variação das coordenadas nodais sobre a matriz de rigidez. São ainda avaliados por este algoritmo incertezas de modelo inseridas pela forma de determinação do vento turbulento e pela consideração da flexibilidade das fundações. A inclusão de amortecedores de atrito à estrutura é, da mesma forma, analisada.
During the implantation of cellular telephony in Brazil, thousands of towers were designed by professionals who used models unsuitable for the consideration of wind dynamic effects. Because of this, structural problems have been frequent. This work is motivated by data lack in literature to help the designer to specify geometric and mechanical characteristics of this structure category. It is discussed every aspect involved in telecommunications tower design: standards, characteristics, materials and a search in the manufacturers to obtain data about weight of the different types of towers. These informations are important to evaluate the project feasibility or to develop new models of structures. Front advantages and disadvantages of existing solutions, this work presents a tower project that adjoins the ratio moment of inertia - cross section area from truss towers and the low wind loading from the poles, to 40 and 70 m towers height . The viability of these projects is estimated by comparing its weight with data searched. After describing nature of the wind and how to obtain and apply the dynamic forces involved, how to obtaining response of structures to these excitation, it is proposed a numerical code to carrying out this analysis. In this code, the integration process is performed by the Newmark and finite differences numerical methods. It can be considered the geometrical non-linearity considering on the stiffness matrix the axial stress effect and nodal coordinates variation. Uncertainties inserted by turbulent wind determining and the foundations flexibility consideration are also evaluated by this algorithm. Friction dampers inclusion is, similarly, examined.

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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)
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 Definitiva).pdf: 5572516 bytes, checksum: 3aeb29a09ea2819f49316a79c5388a73 (MD5) Previous issue date: 2015-12-11
Na última década, o crescimento da telefonia celular no Brasil venceu os limites das grandes capitais, levando a rede a cobrir municípios antes desprovidos de tal tecnologia. A transmissão do sinal pode ocorrer de diversas formas, mas, de fato, a mais comumente utilizada é por meio de antenas sustentadas por torres metálicas. Na prática, as antenas são instaladas em qualquer momento após a montagem da torre, mesmo anos após sua construção, sem qualquer verificação estrutural e, por vezes, excedendo a capacidade de carga nominal. Além disso, na maioria dos casos, não são levados em conta certos cuidados com relação ao posicionamento de suportes e das próprias antenas. Portanto, é comum encontrarmos antenas instaladas de forma inadequada, sendo colocadas fora da silhueta da torre. Este posicionamento, aliado com a ação dinâmica ocasionada pelo vento, pode trazer problemas graves à estrutura. Neste trabalho, são apresentados dois casos reais de torres metálicas que sofreram danos estruturais devido ao problema em questão. Este trabalho tem como principal objetivo apresentar uma solução de amortecimento para as vibrações causadas pelo vento em antenas para telecomunicações. A proposta visa utilizar elastômeros, como o Neoprene, entre a cantoneira do montante e as abraçadeiras dos suportes, reduzindo assim o período de vibração e, consequentemente, os efeitos da fadiga.
In the last decade, the growth of mobile telephony in Brazil won the boundaries of the great capitals, leading the network to cover cities before devoid of such technology. The signal transmission can occur in various ways, but, in fact, the most commonly used is through antennas supported by steel towers. In practice, the antennas are installed at any time after assembly of the tower, even years after its construction, without any structural verification and sometimes exceeding the rated load capacity. Moreover, in most cases, care is not taken into account in relation to the positioning brackets and their antennas. Therefore, it is common to find antennas installed improperly, being placed outside the tower silhouette. This positioning, combined with dynamic action brought by the wind, can bring serious problems to the structure. In this work, we present two real cases of metal towers that have suffered structural damage due to the problem at hand. The objective of this work is to present a solution for damping the vibrations caused by the wind in telecommunications antennas. The proposal to use elastomers, such as neoprene, between the bracket and the tower column, thus reducing the vibration period and, consequently, the effects of fatigue.

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Libri sul tema "Telecommunications tower"

Kenneth, Powell, e Sir Norman Foster and Partners, a cura di. Telecommunications Tower, Barcelona, architects Sir Norman Foster and Partners. London: Wordsearch, 1992.

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Ken, Powell. Telecommunications tower, Barcelona =: Torre de Collserola, Barcelona : architects Sir Norman Foster and Partners. London: Wordsearch, 1992.

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Country Land & Business Association., a cura di. Telecommunications towers. 3^a ed. London: Country Land & Business Association, 2001.

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Nancy, Boone, Cousins Ann, Groschner Holly Ernst, Keefe Thomas F, Moss Sheldon, Stillman Anne e National Trust for Historic Preservation in the United States, a cura di. Locating telecommunications towers in historic buildings. Washington, D.C: National Trust for Historic Preservation, 2000.

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Efthimiopoulos, D. Preliminary design of telecommunication towers - a knowledge-based approach. Manchester: UMIST, 1995.

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SHARE 69 (1987 Chicago, Ill.). Proceedings of SHARE 69: August 23-28, 1987, the Chicago Hilton & Towers, Chicago, Illinois. Chicago, Ill: SHARE, 1987.

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IEEE International Conference on Communications (1995 Seattle, Wash.). ICC '95 Seattle: Communications - gateway to globalization : 1995 IEEE International Conference on Communications ; June 18-22, 1995, Sheraton Seattle Hotel and Towers, Seattle, Washington, USA. [New York, N.Y.]: IEEE Service Center, 1995.

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SHARE 68 (1987 San Francisco, Calif.). Proceedings of SHARE 68, March 1-6, 1987, the San Francisco Hilton & Towers, San Francisco, California. Chicago, Ill: SHARE, 1987.

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Murray, Jerry. The battle for the utility pole and the end-use customer: A PUC staff report. [Salem, Or.]: Oregon Public Utility Commission, Utility Safety and Reliability Section, 2003.

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Division, Scott Wilson Environmental, e KwaZulu-Natal (South Africa). Town and Regional Planning Commission., a cura di. Minimising the negative environmental impact of telecommunication towers and related infrastructure on rural areas in Kwazulu Natal: Policy document. Pietermaritzburg: Town and Regional Planning Commission, 2000.

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Wang, Zoujun, Wenbo Li, Huashi Wu, Jiafeng Chen e Hailiang Lu. "Simulation Research on the Ground Resistance Measurement of the Tower with Clamp Meter Considering the Influence of the Tower Foundation". In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 439–51. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-31733-0_38.

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Zhang, Dongwei, Shun Li e Hongxu Zhao. "Design of Mobile Monitoring System for Tower Crane in Assembly Construction Based on Internet of Things Technology". In Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 588–603. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-28867-8_43.

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Barela, Mary Claire, Maria Theresa Cunanan, Cedric Angelo Festin, Kurtis Heimerl, Esther Jang, Matthew William Johnson, Philip Martinez e Ronel Vincent Vistal. "Connecting Communities Through Mobile Networks: A Case Study of Implementing Community Cellular Networks in the Philippines". In Introduction to Development Engineering, 567–87. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-86065-3_21.

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AbstractCommunity networking can provide telecommunications in unserved and underserved areas where markets fail to deliver adequate Internet service due to high risk of investment and limited returns. This has left an estimated 400 million people worldwide in areas uncovered by mobile networks. In much of the Philippines, with just under 70% mobile phone penetration, unserved communities have limited connectivity options. We describe the CoCoMoNets (Connecting Communities through Mobile Networks) project implemented by the University of the Philippines Diliman (UPD) and international researchers, which delivered basic mobile telephony to remote rural barangays through community cellular networks. The core technology is a low-power, low-cost GSM base station operating at a fraction of the capital and recurring costs of traditional equipment. Deploying Filipino community networks presented unique challenges requiring extensive stakeholder coordination, including an MNO, regulators, local governments, local cooperatives, and end users. The project team encountered challenges including spectrum sharing, tower licensing, geographical remoteness, maintenance difficulties, local politics, and community relations. This chapter documents the project’s experiences and challenges in testing the community cellular model in the real world. After 2 years of operation, the researchers summarize their learnings to contribute to the development of future approaches in delivering sustainable last-mile communication access.

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Astuti, Hastining Bagyo, Rosadi Makhdor, Detriana Margita Sari e Soekhatta Setiawan. "First Master-Permanentization Solution for Telecommunication Tower". In Lecture Notes in Civil Engineering, 131–40. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-5716-3_11.

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Lavado, Katia, Williams Ramos, Edgard Carvallo, Carlos Raymundo e 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". In Human Systems Engineering and Design II, 975–80. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-27928-8_146.

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McClure, G., M. Lapointe e M. A. Khedr. "Seismic behavior of steel lattice telecommunication towers". In Behaviour of Steel Structures in Seismic Areas, 335–37. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003211198-46.

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Zabel, Volkmar, e Simon Marwitz. "Monitoring of the Dynamic Behaviour of a Telecommunication Tower". In Lecture Notes in Civil Engineering, 630–39. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-39109-5_64.

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Szafran, J., e K. Juszczyk-Andraszyk. "Steel telecommunication towers subjected to fire – case studies". In Modern Trends in Research on Steel, Aluminium and Composite Structures, 298–304. London: Routledge, 2021. http://dx.doi.org/10.1201/9781003132134-37.

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Paiva, Fábio, Rui Barros, Jorge Henriques, Tiago Cunha e Pierre Feyfant. "Dynamic Survey of a Telecommunication Tower by Interferometric Radar Technique". In Lecture Notes in Electrical Engineering, 773–82. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58653-9_74.

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Rodrı́guez, Patricia Martı́n, Vivian B. Elena Parnás e Angel Emilio Castañeda Hevia. "Effects of Antennas on Structural Behavior of Telecommunication Towers". In Mathematical Modeling and Computational Intelligence in Engineering Applications, 121–39. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-38869-4_9.

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Atti di convegni sul tema "Telecommunications tower"

Guillemin, Fabrice, e Veronica Quintuna Rodriguez. "Evaluating the impact of Tower Companies on the telecommunications market". In 2021 24th Conference on Innovation in Clouds, Internet and Networks and Workshops (ICIN). IEEE, 2021. http://dx.doi.org/10.1109/icin51074.2021.9385547.

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Stevens, Gregory, David Ilba, Stuart Wildy, Paul Gardner-Stephen e Matthew Lloyd. "Low-cost, open-source, collapsible, air-transportable, field-manufacturable telecommunications tower". In 2014 IEEE Global Humanitarian Technology Conference (GHTC). IEEE, 2014. http://dx.doi.org/10.1109/ghtc.2014.6970289.

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Dalela, Pankaj Kumar, Anurag Yadav e Vipin Tyagi. "Security enhancement in tower monitoring system of oneM2M network". In 2016 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS). IEEE, 2016. http://dx.doi.org/10.1109/ants.2016.7947871.

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Viola, F., P. Romano, R. Miceli, M. Caruso, A. Imburgia, G. Schettino e G. Sauba. "Finite-difference time-domain simulation of tower and grounding subjected to lightning". In INTELEC 2015 - 2015 IEEE International Telecommunications Energy Conference. IEEE, 2015. http://dx.doi.org/10.1109/intlec.2015.7572273.

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Antunes, Paulo, Rui Travanca, Humberto Varum e Paulo André. "Dynamic monitoring of a mobile telecommunications tower with a bi-axial optical FBG accelerometer". In International Conference on Applications of Optics and Photonics, a cura di Manuel F. Costa. SPIE, 2011. http://dx.doi.org/10.1117/12.892216.

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Ma, Zhiwen, Josh Eichman e Jennifer Kurtz. "Fuel Cell Backup Power System for Grid-Service and Micro-Grid in Telecommunication Applications". In ASME 2018 12th International Conference on Energy Sustainability collocated with the ASME 2018 Power Conference and the ASME 2018 Nuclear Forum. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/es2018-7184.

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This paper presents the feasibility and economics of using fuel cell backup power systems in telecommunication cell towers to provide grid services (e.g., ancillary services, demand response). The fuel cells are able to provide power for the cell tower during emergency conditions. This study evaluates the strategic integration of clean, efficient, and reliable fuel cell systems with the grid for improved economic benefits. The backup systems have potential as enhanced capability through information exchanges with the power grid to add value as grid services that depend on location and time. The economic analysis has been focused on the potential revenue for distributed telecommunications fuel cell backup units to provide value-added power supply. This paper shows case studies on current fuel cell backup power locations and regional grid service programs. The grid service benefits and system configurations for different operation modes provide opportunities for expanding backup fuel cell applications responsive to grid needs. The objective of this work primarily focuses on how fuel cells can become a significant part of the telecom backup power to reduce system costs, environmental impact, and dependence on fossil fuels, while ensuring continuity of indispensable service for mobile users. The study identifies the approaches on the fuel cell application through nano/microgrids for an extensive network of fuel cells as distributed energy resources. The possibilities of various application scenarios extend the fuel cell technologies and microgrid for reliable power supply.

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Murgai, Shivatmica, e Sharv Murgai. "Parallel Tempering (PT) Empowers Cell Tower Clustering: Advancing k-medoids Optimization". In 2023 IEEE International Conference on Advanced Networks and Telecommunications Systems (ANTS). IEEE, 2023. http://dx.doi.org/10.1109/ants59832.2023.10468718.

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Egbobawaye, Julius, Clinton Aigbavboa e Osamudiamen Otasowie. "The adoption of current safety practices for the construction of telecommunication masts and towers: A Principal Component Analysis". In 15th International Conference on Applied Human Factors and Ergonomics (AHFE 2024). AHFE International, 2024. http://dx.doi.org/10.54941/ahfe1005344.

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Construction safety practices is a significant aspect in the construction industry, as construction workers cannot operate in an accident free environment without proper adherence to safety guidelines. The construction and maintenance of telecommunication masts and towers can pose serious accident threat to workers on site, hence the need to adopt the current safety practices in the sector. This study outlined the current safety practices observed by workers in the construction of telecommunication masts and towers. The study adopted a quantitative research approach and data collected from the participants involved in the construction telecommunication masts and towers in Nigeria. Information gathered was analysed using the mean item score (MIS), standard deviation (SD) and exploratory factor analysis (EFA). The findings showcased the current safety practices of telecommunication masts and towers in the Nigeria telecommunication industry to be; personal protective equipment (PPE), fire extinguisher, safety inspection, authorized entry to construction sites is prohibited, safety policy, safety education and training programs. These were seen to have a direct impact on the safety practices currently observed in the construction of telecommunications mast and towers in the Nigerian telecommunication industry. Non adherence to safety practices can hinder the welfare of the workers and economic growth of the country. Therefore, it is imperative for the telecommunication industry in Nigeria to adopt more ways of managing safety in the industry so as to improve the safety and welfare of construction workers and prevent negative economic infractions they may arise from accidents on sight. The government should adopt measures to ensure the current safety practices are enforced among all construction stakeholders who are involved in the construction of telecommunication masts and towers to prevent accidents from happening at construction sites.

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Sunjerga, Antonio, Marcos Rubinstein, Gerhard Diendorfer e Farhad Rachidi. "An Analysis of the Distribution of Inter-Flash Time Intervals in the Area of the Säntis Tower". In 2018 26th International Conference on Software, Telecommunications and Computer Networks (SoftCOM). IEEE, 2018. http://dx.doi.org/10.23919/softcom.2018.8555816.

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Tragulnuch, Parkpoom, Teerasit Kasetkasem, Tsuyoshi Isshiki, Thitiporn Chanvimaluang e Salisa Ingprasert. "High Voltage Transmission Tower Identification in an Aerial Video Sequence using Object-Based Image Classification with Geometry Information". In 2018 15th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON). IEEE, 2018. http://dx.doi.org/10.1109/ecticon.2018.8619898.

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Rapporti di organizzazioni sul tema "Telecommunications tower"

Telecommunications tower maintenance worker struck by cable. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, novembre 2002. http://dx.doi.org/10.26616/nioshsface02ne013.

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Tower erector/inspector dies after falling 200 feet from a telecommunications tower to the ground - North Carolina. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, ottobre 1997. http://dx.doi.org/10.26616/nioshface9710.

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Tower erector dies after falling 200 feet from telecommunication tower - North Carolina. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, gennaio 1999. http://dx.doi.org/10.26616/nioshface9820.

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NIOSH alert: preventing injuries and deaths from falls during construction and maintenance of telecommunication towers. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, luglio 2001. http://dx.doi.org/10.26616/nioshpub2001156.

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