Bibliografie tematiche / Transmission line model

Letteratura scientifica selezionata sul tema "Transmission line model"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 9 febbraio 2022

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Articoli di riviste sul tema "Transmission line model"

Baker, Louis. "Return-Stroke Transmission Line Model". Electromagnetics 7, n. 3-4 (gennaio 1987): 229–40. http://dx.doi.org/10.1080/02726348708908183.

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Junker, Gregory P., Allen W. Glisson e Ahmed A. Kishk. "Matched transmission-line source model". Microwave and Optical Technology Letters 14, n. 2 (5 febbraio 1997): 94–99. http://dx.doi.org/10.1002/(sici)1098-2760(19970205)14:2<94::aid-mop6>3.0.co;2-g.

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Lowery, Arthur James. "Transmission-line modelling of semiconductor lasers: The transmission-line laser model". International Journal of Numerical Modelling: Electronic Networks, Devices and Fields 2, n. 4 (dicembre 1989): 249–65. http://dx.doi.org/10.1002/jnm.1660020408.

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Lee, Jingeol. "Transmission line based struck string model". Applied Acoustics 111 (ottobre 2016): 1–7. http://dx.doi.org/10.1016/j.apacoust.2016.04.002.

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Cristina Tavares, Maria, José Pissolato Filho e Carlos Manuel Portela. "Quasi-modes multiphase transmission line model". Electric Power Systems Research 49, n. 3 (aprile 1999): 159–67. http://dx.doi.org/10.1016/s0378-7796(98)00105-9.

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Baum, Carl E., e Louis Baker. "Analytic Return-Stroke Transmission-Line Model". Electromagnetics 7, n. 3-4 (gennaio 1987): 205–28. http://dx.doi.org/10.1080/02726348708908182.

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Lee. "Transmission Line Based Plucked String Model". JOURNAL OF THE ACOUSTICAL SOCIETY OF KOREA 32, n. 4 (2013): 361. http://dx.doi.org/10.7776/ask.2013.32.4.361.

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Thirukumaran, Sanmugasundaram, Paul Ratnamahilan Polycarp Hoole, Ramiah Harikrishnan, Kanesan Jeevan, Kandasamy Pirapaharan e Samuel Ratnajeevan Herbert Hoole. "AIRCRAFT-LIGHTNING ELECTRODYNAMICS USING THE TRANSMISSION LINE MODEL PART I: REVIEW OF THE TRANSMISSION LINE MODEL". Progress In Electromagnetics Research M 31 (2013): 85–101. http://dx.doi.org/10.2528/pierm12110303.

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Milford, R. V., e A. M. Goliger. "Tornado risk model for transmission line design". Journal of Wind Engineering and Industrial Aerodynamics 72 (novembre 1997): 469–78. http://dx.doi.org/10.1016/s0167-6105(97)00262-6.

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Arnoldussen, T. C. "A modular transmission line/reluctance head model". IEEE Transactions on Magnetics 24, n. 6 (1988): 2482–84. http://dx.doi.org/10.1109/20.92148.

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Tesi sul tema "Transmission line model"

KLAUSNER, JEREMIAS CORAL. "TRANSMISSION LINE MODEL". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1992. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8740@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Este trabalho apresenta uma metodologia para simulação de linhas de transmissão, geradores, interconexões e cargas por modelos baseados em filtragem digital. Estes modelos usam de maneira intensiva o conceito de redes digitais equivalentes, para resolver problemas aliados à responsabilidade dos filtros digitais em redes onde haja interconexão de elementos, desde simples cargas a subredes. O resultado deste trabalho é um sistema que representa de maneira quase que integral o espectro do sinal discretizado, em contraposição aos métodos tradicionalmente encontrados na simulação de sistemas deste tipo por computador digital. Por outro lado o processo é facilmente implementado por processadores digitais de sinal (DSPs), resultado em simulações em tempo rela comparáveis a simulações off-line por aplicativos
This thesis introduces a metodology for the simulation of transmission lines, power generators, interconnnections and loads, base don digital filtering models. These models make intensive use of digital equivalent network concepts in order to solve the computability problem of the digital filter. The result of this work is a system that represents the discrete-time signal on a bandwsiths covering up to the Nyquist frequency, in contraposition with traditional methods of computer simulation. The structure is easily implemented with Digital signal Processors (DSPs), resulting in real time simulations that compare to off-line circuit simulators in precision.

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DOMINGUES, LUIS ADRIANO DE MELO CABRAL. "MODEL FOR TRANSMISSION LINE CONDUCTORS TEMPERATURE FORECASTING". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2002. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=2748@1.

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CENTRO DE PESQUISA DE ENERGIA ELÉTRICA
As linhas de transmissão têm um papel fundamental no funcionamento do sistema elétrico, efetuando a ligação entre as usinas geradoras e os centros de carga. Quando o sistema de transmissão atinge sua capacidade limite de transferência de potência torna-se necessário expandir o sistema, quer construindo novas linhas quer aumentando a capacidade das existentes. Entre os fatores que limitam a capacidade de transporte de uma linha destaca-se a sua temperatura limite de operação, estabelecida por questões econômicas e de segurança. Pela sua extensão geográfica, a construção de uma linha de transmissão envolve tanto um custo quanto um impacto ambiental elevados. Por estes motivos a recapacitação de linhas existentes, no sentido de aumentar sua capacidade de transporte, tornou-se um assunto prioritário e uma opção estratégica para expansão do sistema elétrico. Neste trabalho analisa-se o problema da temperatura de operação dos condutores de linhas aéreas de transmissão. Descreve-se a metodologia atualmente utilizada para definir o limite operativo das linhas, destacando-se a possibilidade de aumentar sua capacidade limite pelo conhecimento mais preciso da temperatura de operação dos seus condutores.Descreve-se o desenvolvimento de uma série de dois modelos para previsão da temperatura de operação de condutores, um modelo completo, baseado em previsões das diversas variáveis meteorológicas e um modelo direto de previsão que utiliza as séries de valores de temperatura. No desenvolvimento dos modelos de previsão foram utilizados modelos estocásticos, lineares, de amortecimento exponencial e Box-Jenkins e técnicas de Redes Neurais Artificiais. Apresenta-se uma série de testes de validação, que mostram um desempenho muito bom dos métodos de previsão, e ilustra-se as possibilidades de aplicação dos modelos desenvolvidos.
Transmission lines have a fundamental role in the electric system performance,connecting power sources to load centers. When the transmission system attains it`s transmission capability limit, the system must be expanded, either constructing new lines, or upgrading existing ones. Among the factors that can limit a transmission line transfer capability is the operating temperature limit, established for both economic and safety reasons. Due to its geographic extension the construction of a transmission line involves a big economic as well as environmental cost. For this reasons the upgrade of existing lines, in the sense of increasing it`s transmission capability, has become a priority to electric utilities and a main option for system expansion. In this work the problem of transmission line conductors` operational temperature is analised and the methodology presently used to establish it`s operational limit is described. Two models to forecast transmission line conductors` temperature are developped:a complete model which uses forecasts of the relevant metheorological variables,and a direct model using univariate methods on temperature series. In the development of forecasting models, linear stochastic methods such as exponential smoothing and Box-Jenkins, as well as Artificial Neural Networks techniques were used.Finally model validation is presented, showing very good performance of the proposed forecasting models, and some potential applications are suggested.

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Zhang, Jiefu. "Characterization of carbon nanostructures based on transmission line model". Thesis, Queen Mary, University of London, 2014. http://qmro.qmul.ac.uk/xmlui/handle/123456789/9102.

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In the past two decades carbon nanotubes and graphene have attracted a lot of research attention due to their exceptional electronic properties. The research focus on improving the synthesising techniques will eventually lead to their applications in terahertz wave, millimetre wave and microwave frequencies. In this thesis, a modelling technique based on the transmission line theory is proposed to calculate the 2-port S-parameters of vertically aligned CNT arrays with finite sizes and arbitrary cross sections. The process takes into account all the coupling in the array and gives the analytical solution of S-parameters. The simulation results from the proposed technique are compared with results obtained by effective single conductor model and shows a good matching for small arrays and an increasing difference with the increase of array sizes. From the S-parameters, the fundamental properties of CNT arrays such as input impedance and absorption are obtained and compared with measurement results in microwave frequencies. The dependence of these properties on ambient temperature and host medium are also presented to explore the tunability of CNT arrays. From the Fabry-Perot the wave propagating velocity is also calculated for arrays with different sizes and fitted with a power function. The S-parameters allows the extraction of the complex permittivity, permeability and conductivity of the CNT array. The extracted permittivity and absorption are compared with measurement results. The graphene nanoribbons are simulated in the same manner. The graphene sheet on top of a microstrip gap is simulated using transmission line model at microwave frequencies to show the impact of parasitics and contact resistances. Finally, a graphene based microwave absorber is proposed and modelled under both electric and magnetic bias. The absorber shows good broadband absorption rate and a potential for turning transparent and opaque to microwaves under both electric and magnetic bias.

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John, Lester Ryan. "An inverse transmission line model of the lower limb arterial system". Doctoral thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/3254.

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Gao, Youxin. "Interconnect optimization in deep sub-micron design under the transmission line model". Digital version:, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p9992795.

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Beeks, Kyle A. "Arterial blood pressure estimation using ultrasound technology and transmission line arterial model". Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/121663.

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This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Thesis: M. Eng., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2019
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 67-69).
This thesis describes the application of a transmission line model to arterial measurements in order to derive useful cardiovascular parameters. Non-invasive ultrasound techniques are used to make these measurements, which has several benefits over invasive methods such as arterial catheterization. However, invasive methods are seen as the "gold standard" measurements and therefore the most accurate. Having accurate measurements that can be done non-invasively would be very desirable for cardiologists to determine their patients' risk of developing cardiovascular disease. This work details how to obtain the blood flow and pulse pressure waveforms using ultrasound transducers. Two transducers, one for imaging and one for Doppler, can be used together to derive these waveforms from distension and blood flow velocity measurements. Unfortunately, the only blood pressure waveform that can be obtained is the pulse pressure, which does not contain diastolic information. By decomposing the backward and forward pulse and flow waves and using the transmission line model, the diastolic pressure can be determined and the complete arterial blood pressure waveform can be obtained.
by Kyle A. Beeks.
M. Eng.
M.Eng. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science

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Hoxha, Neriton. "Ultra-fast line protection relay algorithm based on a Gamma model of line". Doctoral thesis, Universite Libre de Bruxelles, 2020. https://dipot.ulb.ac.be/dspace/bitstream/2013/313348/6/contratNH.pdf.

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The relay protections of the transmission lines play a fundamental role in the electrical power systems. They permit to ensure the security and the reliability of the electricity transmission from the generators to the final consumers. The objective of a relay protection is to provide a corrective action as quickly as possible when an abnormal condition of the power system is detected. The quickness of the response permits to limit the stress on the equipments of the power system and the consumers, to ensure the security of the people, to improve the power quality and to maintain the stability of the power system.The protective relaying systems have evolved a lot since their first implementation in the 1900’s. However, the electrical power systems are in constant evolution and the reliability of the protective relaying systems becomes more and more challenging. The three main characteristics of the relay protections which are security, dependability and speed must be continuously improved to achieve these objectives. The major relay protections implemented nowadays are based on frequency-domain methods. These methods are intrinsically limited in speed by the phasor estimation of the voltage and current signals. More recent methods based on incremental quantities permitted to break this limitation by working directly in time-domain. Despite the speed of these methods, the dependability is usually limited in order to ensure the security.In this work, it is proposed to develop a time-domain ultra-fast non-pilot distance protection based on a Gamma model of line to improve the security, the dependability and the speed, even for long lines and weak power systems. This protection is composed of a loop selection element, a directional element and a distance element. The target tripping time is 4 ms or less.
Doctorat en Sciences de l'ingénieur et technologie
info:eu-repo/semantics/nonPublished

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Uzelac, Lawrence Stevan. "A Multiple Coupled Microstrip Transmission Line Model for High-Speed VLSI Interconnect Simulation". PDXScholar, 1991. https://pdxscholar.library.pdx.edu/open_access_etds/4526.

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A model is presented which incorporates the advantages of a mixed mode simulation to characterize transmission line behavior in multiple coupled Transmission line systems. The model is intended for use by digital circuit designers who wish to be able to obtain accurate transmission line behavior for complex digital systems for which continuous time simulation tools such as SPICE would time prohibitive. The model uses a transverse electromagnetic wave approximation to obtain solutions to the basic transmission line equations. A modal analysis technique is used to solve for the attenuation and propagation constants for the transmission lines. Modal analysis done in the frequency domain after a Fast Fourier Transform of the time-domain input signals. Boundary conditions are obtained from the Thevinized transmission line input equivalent circuit and the transmission line output load impedance. The model uses a unique solution queue system that allows n-line coupled transmission lines to be solved without resorting to large order matrix methods or the need to diagonals larger matrices using linear transformations. This solution queue system is based on the method of solution superposition. As a result, the CPU time required for the model is primarily a function of the number of transitions and not the number of lines modeled. Incorporation of the model into event driven circuit simulators such as Network C is discussed. It will be shown that the solution queue methods used in this model make it ideally suited for incorporation into a event-driven simulation network. The model presented in this thesis can be scaled to incorporate direct electromagnetic coupling between first, second, or third lines adjacent to the line transitioning. It is shown that modeling strictly adjacent line coupling is adequate for typical digital technologies. It is shown that the model accurately reproduces the transmission line behavior of systems modeled by previous authors. Example transitions on a 8-line system are reviewed. Finally, future model improvements are discussed.

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Tavighi, Arash. "A frequency-dependent multiconductor transmission line model with collocated voltage and current propagation". Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/60791.

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This research contributes to developing a time domain and a frequency domain formulations to solve electromagnetic transients in power system with multiconductor overhead transmission lines. The time domain solution introduces a frequency dependent transmission line model “FDLM”. For the development of the FDLM a fundamental constraint is added to the classical line equations to maintain the symmetry between electric and magnetic fields. As a result, voltage waves and current waves travel together and the characteristic impedance remains uniform along the line. With this premise, a constant real transformation matrix can be obtained to diagonalize the line functions with high accuracy. This feature can greatly facilitate the line modelling as opposed to the existing line models which require complex frequency dependent transformation matrices for their diagonalization. The use of a single constant real transformation matrix for the voltage and current waves which is exact over the frequency range enables FDLM to provide higher accuracy and numerical efficiency than the existing line models while it complies with the physical system. The accuracy of the FDLM is assessed through comparisons with a newly developed Discrete Time Fourier Series frequency domain solution. This methodology is based on the correct specification of the time window and frequency window widths. Guidelines are provided for this set up which avoids the typical Gibbs and aliasing errors related to the classical frequency domain solutions. The proposed frequency domain solution is simpler to implement than the most commonly used numerical Laplace transform solution while it does not require further considerations to use damping factors or windowing functions.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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Beyers, Ryno Dawid. "Circuit model design of conical transmission line power combiners and isolation of reactive combiners". Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96976.

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Thesis (PhD)--Stellenbosch University, 2015.
ENGLISH ABSTRACT: This dissertation presents a circuit-based design technique that leads to benefits in terms of the physical size, manufacturability, and exibility in the design of N-way conical line power combiners. An equivalent circuit model for the peripheral input ports of conical line power combiners is extracted, as well as empirical equations that allow the circuit element values to be calculated directly from the physical dimensions of the combiner, and vice versa. This allows for rapid optimization of various dimensions of the combiner at a significantly reduced computational cost compared to full-wave simulations. A design procedure is presented and a conical combiner designed with a measured reflection coefficient of better than -18 dB over a 46 % bandwidth around 10 GHz. The designed prototype is much smaller compared to previous designs while exhibiting similar performance. Design procedures for single-section and multi-section impedance tapered conical to coaxial line transitions are also presented, which can be used to simplify the design of conical combiners and reduce the manufacturing effort. Two combiners are designed, one with a single-section and one with a multi-section transition, and output port reflection coefficients of -23 dB and -17 dB over bandwidths of 20 % and 43 % around 10 GHz are measured, respectively. This dissertation additionally presents a method that can be used in general to improve the input port isolation of N-way power combiners without affecting their reciprocity. A simple S-parameter proof is presented, followed by a derivation of equations that can be used to estimate the worst-case performance. Some design examples are presented, showing that terminations can be used for isolation loads. A prototype based on microstrip transmission lines is manufactured and a much improved input port reflection and isolation performance of -15 dB and 20 dB is measured, respectively, compared to a simulated input port reflection coefficient of -2:5 dB and isolation of 2:5 dB before the method was applied. ii
AFRIKAANSE OPSOMMING: Hierdie proefskrif stel 'n stroombaangebaseerde ontwerpsmetode voor wat lei tot voordele in terme van die fisiese grootte, vervaardigbaarheid, en vryheid in die ontwerp van koniese lyn kombineerders. 'n Ekwivalente stroombaanmodel vir die voerpoorte word onttrek, asook empiriese vergelykings wat gebruik kan word om die stroombaanelement waardes vanaf die afmetings van die kombineerder te bepaal. Dit laat die ontwerper toe om verskeie afmetings van die kombineerder te optimeer teen 'n beduidende laer koste in vergelyking met volgolf simulasies. 'n Ontwerpsprosedure word voorgestel en gebruik om 'n koniese kombineerder te ontwerp en 'n weerkaatskoëffisient van beter as -18 dB met 'n bandwydte van 46 % om 10 GHz word gemeet. Die prototipe is aansienlik kleiner as vorige ontwerpe, maar toon soortgelyke werkverrigting. Ontwerpsprosedures vir enkel en veelvoudige deel koniese na koaksiale lyn oorgange word ook voorgestel, wat gebruik kan word om die ontwerp en vervaardiging van koniese kombineerders te vereenvoudig. Twee kombineerders word ontwerp, een met 'n enkel deel oorgang en een met veelvoudige dele, en onderskeidelike uittree weerkaatskoëffisiente van -23 dB en -17 dB oor bandwydtes van 20 % en 43 % word gemeet. Hierdie proefskrif stel ook 'n metode voor wat gebruik kan word om die intree poort isolasie van N-rigting kombineerders in die algemeen te verbeter, sonder om die wederkerigheid daarvan te beïnvloed. 'n Bewys van die metode word gelewer, gevolg deur 'n afleiding van vergelykings wat gebruik kan word om die slegste-geval werkverrigting af te skat. Verskillende voorbeelde van kombineerders word getoon waarop die metode toegepas is, en wys dat terminasies gebruik kan word vir die isolasie laste. 'n Prototipe gebaseer op mikrostrook transmissielyne word vervaardig en 'n verbeterde intreepoort weerkaatskoëffisient en isolasie van onderskeidelik -15 dB en 20 dB word gemeet, in vergelyking met 'n weerkaatskoëffisient van -2:5 dB en isolasie van 2:5 dB voordat die metode toegepas is.

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Libri sul tema "Transmission line model"

Noda, Taku. Development of a transmission-line model considering the skin and corona effects for power systems transient analysis. [Kyoto, Japan]: Noda, 1996.

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Faria, J. A. Brandão. Multiconductor transmission-line structures: Modal analysis techniques. New York: Wiley, 1993.

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1951-, O'Connor William, e Pulko Susan H, a cura di. Transmission line matrix in computational mechanics. Boca Raton, FL: CRC Press, 2006.

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The transmission-line modeling method: TLM. New York: Institute of Electrical and Electronics Engineers, 1995.

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Simms, Michael. Transmission -Line MAtrix Modelling of Acoustic Devices. Dublin: University College Dublin, 1997.

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Transmission line matrix (TLM) techniques for diffusion applications. Amsterdam, The Netherlands: Gordon and Breach Science Publishers, 1998.

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The transmission-line modeling (TLM) method in electromagnetics. [San Rafael, Calif.]: Morgan & Claypool Publishers, 2006.

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Haase, Heiko. Full-wave field interactions of nonuniform transmission lines: Dissertation. Magdeburg: U. Magdeburg, 2005.

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Atkins, Donald B. Correlation analysis of simulated voltage responses in printed circuit board transmission lines. Reading, Mass: Addison-Wesley, 1992.

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Lynch, Kieran. Transmission line matrix modelling of acoustic waves, with application to dynamic boundary problems. Dublin: University College Dublin, 1996.

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Capitoli di libri sul tema "Transmission line model"

Zakaryukin, Vasilii, Andrey Kryukov e Aleksandr Cherepanov. "Mathematical Model of Multiphase Power Transmission Line". In International Scientific Conference Energy Management of Municipal Transportation Facilities and Transport EMMFT 2017, 100–108. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70987-1_11.

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Alam, Mehebub, Shubhrajyoti Kundu, Siddhartha Sankar Thakur, Anil Kumar e Sumit Banerje. "A New AC Model for Transmission Line Outage Identification". In Advances in Systems, Control and Automations, 223–36. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8685-9_21.

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Raida, Zbyněk. "A Reverse Neural Model of a General Planar Transmission Line". In The State of the Art in Computational Intelligence, 203–8. Heidelberg: Physica-Verlag HD, 2000. http://dx.doi.org/10.1007/978-3-7908-1844-4_33.

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Liang, Likai, Xueshan Han e Yanling Wang. "Variable Parameter Equivalent Model for the Loadability of Key Transmission Line". In Lecture Notes in Electrical Engineering, 161–69. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-4981-2_18.

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Kikuchi, Takashi. "Transmission line model for driving plasma convection in the inner magnetosphere". In The Inner Magnetosphere: Physics and Modeling, 173–79. Washington, D. C.: American Geophysical Union, 2005. http://dx.doi.org/10.1029/155gm20.

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Szabó, Dávid, Bálint Németh, Gábor Göcsei, Viktor Lovrenčić, Nenad Gubeljak, Uršula Krisper e Matej Kovač. "Icing Analysis of Kleče-Logatec Transmission Line with Two-Level Icing Model". In Lecture Notes in Electrical Engineering, 107–15. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37818-9_10.

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Wei, Lim Yang, Kyota Otsuka e Takanobu Ohno. "Study of Transmission and Reflection Characteristics of Microstrip Line During Application of Noise Suppression Sheet by Adhesive". In The Malaysia-Japan Model on Technology Partnership, 243–51. Tokyo: Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54439-5_23.

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Tseng, Yen-Ming, Rong-Ching Wu, Jeng-Shyang Pan, En-Chih Chang e Peijiang Li. "Base on Transmission Line Model to Investigate the Power Margins of Main Transformers". In Advances in Intelligent Information Hiding and Multimedia Signal Processing, 205–14. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63859-1_26.

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Uklejewski, R. "Poroelasto-electric Longitudinal Waves in Porous Wet Long Bones - a Transmission Line Model". In Solid Mechanics and Its Applications, 351–56. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/0-306-46953-7_49.

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Zhang, Yinghua, Lei Wang, Jian Liu, Yunfeng Peng, Jiapeng Pu e Guozhong Sun. "Ultra-broad Bandpass Filter Based on Composite Right-Left Handed Transmission Line Model". In Lecture Notes in Computer Science, 586–95. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-24271-8_52.

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Atti di convegni sul tema "Transmission line model"

Yaowu Liu. "Simplifying PEEC model to transmission line model". In IEEE Antennas and Propagation Society Symposium, 2004. IEEE, 2004. http://dx.doi.org/10.1109/aps.2004.1331820.

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Williams, Dylan F. "Metal-Insulator-Semiconductor Transmission Line Model". In 51st ARFTG Conference Digest. IEEE, 1998. http://dx.doi.org/10.1109/arftg.1998.327280.

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Lai, Ching-Ming, Jiashen Teh e Yu-Huei Cheng. "Fuzzy Evaluation of Transmission Line End-of-Life Reliability Model". In 2019 International Automatic Control Conference (CACS). IEEE, 2019. http://dx.doi.org/10.1109/cacs47674.2019.9024738.

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Braun, Christoph, Mahbubur Rahman e Valentina Cecchi. "A transmission line model with non-uniformly distributed line impedance". In 2017 North American Power Symposium (NAPS). IEEE, 2017. http://dx.doi.org/10.1109/naps.2017.8107223.

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Ciocan, Razvan, Nathan Ida e Diana Driscoll. "Transmission line matrix model for ultrasonic imaging". In NDE For Health Monitoring and Diagnostics, a cura di Tribikram Kundu. SPIE, 2002. http://dx.doi.org/10.1117/12.469879.

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Luo, Jian, Kaidi Zhang, Tao Chen, Guofu Zhao, Peng Wang e Shuhui Feng. "Distributed parameter circuit model for transmission line". In 2011 IEEE International Conference on Advanced Power System Automation and Protection (APAP). IEEE, 2011. http://dx.doi.org/10.1109/apap.2011.6180607.

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Einziger, P. D., L. M. Livshitz e J. Mizrahi. "Transmission-Line Model for Myelinated Nerve Fiber". In 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference. IEEE, 2005. http://dx.doi.org/10.1109/iembs.2005.1615398.

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Triandaf, Ioana. "Chaos control in a transmission line model". In 2010 17th IEEE International Conference on Electronics, Circuits and Systems - (ICECS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icecs.2010.5724684.

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Leung, Mande, Guy Dumont, George G. S. Sandor e James E. Potts. "Estimating Arterial Stiffness using Transmission Line Model". In Conference Proceedings. Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE, 2006. http://dx.doi.org/10.1109/iembs.2006.4397667.

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Rapporti di organizzazioni sul tema "Transmission line model"

Genoni, T. C., C. N. Anderson, R. E. Clark, J. Gansz-Torres, D. V. Rose e Dale Robert Welch. Theory and Circuit Model for Lossy Coaxial Transmission Line. Office of Scientific and Technical Information (OSTI), aprile 2017. http://dx.doi.org/10.2172/1365517.

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Le Vine, D. M., e J. C. Willett. Comment on the Transmission-Line Model for Computing Radiation from Lightning. Fort Belvoir, VA: Defense Technical Information Center, febbraio 1992. http://dx.doi.org/10.21236/ada271442.

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Goldberg, M., e D. Keyser. Transmission Line Jobs and Economic Development Impact (JEDI) Model User Reference Guide. Office of Scientific and Technical Information (OSTI), ottobre 2013. http://dx.doi.org/10.2172/1107459.

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Uzelac, Lawrence. A Multiple Coupled Microstrip Transmission Line Model for High-Speed VLSI Interconnect Simulation. Portland State University Library, gennaio 2000. http://dx.doi.org/10.15760/etd.6410.

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Pettit, Chris, e D. Wilson. A physics-informed neural network for sound propagation in the atmospheric boundary layer. Engineer Research and Development Center (U.S.), giugno 2021. http://dx.doi.org/10.21079/11681/41034.

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Abstract (sommario):

We describe what we believe is the first effort to develop a physics-informed neural network (PINN) to predict sound propagation through the atmospheric boundary layer. PINN is a recent innovation in the application of deep learning to simulate physics. The motivation is to combine the strengths of data-driven models and physics models, thereby producing a regularized surrogate model using less data than a purely data-driven model. In a PINN, the data-driven loss function is augmented with penalty terms for deviations from the underlying physics, e.g., a governing equation or a boundary condition. Training data are obtained from Crank-Nicholson solutions of the parabolic equation with homogeneous ground impedance and Monin-Obukhov similarity theory for the effective sound speed in the moving atmosphere. Training data are random samples from an ensemble of solutions for combinations of parameters governing the impedance and the effective sound speed. PINN output is processed to produce realizations of transmission loss that look much like the Crank-Nicholson solutions. We describe the framework for implementing PINN for outdoor sound, and we outline practical matters related to network architecture, the size of the training set, the physics-informed loss function, and challenge of managing the spatial complexity of the complex pressure.

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Thompson, Joseph. How WASH Programming has Adapted to the COVID-19 Pandemic. Institute of Development Studies (IDS), dicembre 2020. http://dx.doi.org/10.19088/slh.2021.001.

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Since first appearing at the end of 2019, the novel coronavirus disease (COVID-19) has spread at a pace and scale not seen before. On 11 March 2020, the World Health Organization (WHO) declared COVID-19 a pandemic. A rapid response was called for, and actors across the globe worked quickly to develop sets of preventative measures to contain the disease. One mode of transmission identified early on in the crisis was via surfaces and objects (fomites) (Howard et al. 2020). To combat this, hand hygiene was put forward as a key preventative measure and heralded as ‘the first line of defence against the disease’ (World Bank 2020). What followed was an unprecedented global focus on handwashing with soap. Health messages on how germs spread, the critical times at which hands should be washed, and methods for correct handwashing were shared (Centers for Disease Control and Prevention 2020). Political leaders around the world promoted handwashing and urged people to adopt the practice to protect against the coronavirus. The primary and secondary impacts of COVID-19 have affected people and industries in a variety of different ways. For the WASH sector, the centring of handwashing in the pandemic response has led to a sudden spike in hygiene activity. This SLH Rapid Topic Review takes stock of some of the cross-cutting challenges the sector has been facing during this period and explores the adaptations that have been made in response. It then looks forwards, thinking through what lies ahead for the sector, and considers the learning priorities for the next steps.

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