Dissertations / Theses on the topic 'Tam multa'
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Le, Bras Yann. "La démission et la révocation par le pape des évêques français à l'occasion du concordat de 1801 : histoire, enjeux et perpectives canoniques." Electronic Thesis or Diss., Université Clermont Auvergne (2021-...), 2021. http://www.theses.fr/2021UCFAD006.
Full textAs soon as he came to power, Bonaparte proposed to Pope Pius VII to re-establish Catholic worship in France, which was formalised by the Concordat of 1801. In exchange, he demanded, among other things, that all the bishops then recognised by Rome be removed from office and replaced by others appointed by him. Pius VII was in a quandary. He did not know whether he had the right to dismiss bishops. He decided to ask them to resign, but nearly half of them refused. The retention of these bishops in their seats would prevent the conclusion of the Concordat, which Pius VII considered a great good for the Church. It was with this good in mind that he came to believe that he had the authority to dismiss the non-resigning bishops. This work aims at establishing the history of this decision. Among other things, we used a lot of unpublished archives, the most important of which are published here in their entirety. The thesis seeks to explain how the Holy See succeeded, under the Restoration, in getting the entire episcopate to accept his decision. It details the issues at stake, by that time and after. Ultimately, this text supports the thesis that, even if Pius VII took an unprecedented decision, he acted in conformity with the whole canonical tradition. This decision can, moreover, still give theological, canonical and even practical lessons today. In some respects, it could even be a source of inspiration for the Holy See in its relations with certain countries
Ter-Antonyan, Ruben. "Search for rare multi-pion decays of the tau lepton using the BABAR detector." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1143148602.
Full textBerti, Federico. "RFID tag localization with virtual multi-antenna systems." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/9753/.
Full textAl-Adhami, Ayad. "A secure quorum based multi-tag RFID system." Thesis, University of Plymouth, 2018. http://hdl.handle.net/10026.1/12821.
Full textGustafsson, Ismodes Isabella. "A Multi-Actor Multi Criteria Analysis of Carbon Tax Design:Case Study of Peru." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217869.
Full textScarcella, Mark Joseph. "Search for the Higgs Boson decaying to tau leptons at ATLAS using multi-variate analysis techniques." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14955.
Full textSarzynski, Melanie Diane. "Developing & tailoring multi-functional carbon foams for multi-field response." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2777.
Full textJaber, Dana N. "Multi-input multi-output (MIMO) detection by a colony of ants." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1778.
Full textYe, Qianyun. "2.4-GHz Wireless Network Based Multi-Tag Access System." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188491.
Full textTang, Yunpeng. "A novel N-phase multi-modular series HVDC tap." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/44134/.
Full textCeretti, Federica <1991>. "Tax havens. China's multi-faceted connection with offshore jurisdictions." Master's Degree Thesis, Università Ca' Foscari Venezia, 2017. http://hdl.handle.net/10579/10664.
Full textKoyama, M., N. Nagano, R. Imai, M. Shikida, H. Honda, M. Okochi, H. Tsuchiya, and K. Sato. "Evaluation of Magnetic Beads Agitation Performance Operated by Multi-Layered Flat Coils." IEEE, 2007. http://hdl.handle.net/2237/9562.
Full textWilson, Cristiana Margarita Callejas. "El carnaval en Mulata de tal de Miguel Angel Asturias." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68144.
Full textDasgupta, Sumantra. "Multi-objective stochastic path planning." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2755.
Full textXIONG, YUANHE. "Electromagnetic Design and Optimization of Multi-Chip RFID Tag Antennas." Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2566955.
Full textGuéroux, Marie. "La Maladie d'Alzheimer et la place des polyphénols au sein des nouvelles stratégies thérapeutiques : analyse multi-techniques des interactions "polyphénols-peptides Tau"." Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR14887/document.
Full textAlzheimer's disease is characterized by the formation of neurofibrillary tangles constituted by abnormally hyperphosphorylated and aggregated Tau protein. Many studies deal with potential therapeutic strategies based on the inhibition of this polymerization, and show the beneficial effects of some molecules like polyphenols, but the obtained so far results show a lack of data at the molecular level. Thus, after the synthesis of, a library of polyphenols with different structures, and 3 representative peptides of the P2 phosphorylation Tau region, by following a strategy combining NMR and molecular modeling, we have evaluated dynamic parameters of the formed complex. This project has provided us informations in terms of affinity, and structure / activity relationships, and leading us to a better understanding of the mechanisms led to better understand the mechanisms involved in the aggregation Tau inhibition phenomena by polyphenols
Yllana, Grace R. "Watchdogs that do not Bite, Nets that do not Catch, and "Perps" Policing Themselves: Why Anti-Corruption Multi-Level Governance Efforts Fail in the Philippines." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1380613168.
Full textKamineni, Neelima. "A Study of Anti-collision Multi-tag Identification Algorithms for Passive RFID Systems." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc28439/.
Full textTatli, Ipek. "Tag-based Music Recommendation Systems Using Semantic Relations And Multi-domain Information." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613750/index.pdf.
Full textthey are better identifiers of user profiles than ratings, which are usually numerical values assigned to items by users. Thus, the tag-based contextual representations of music tracks are concentrated in this study. Items are generally represented by vector space models in the content based recommendation systems. In tag-based recommendation systems, users and items are defined in terms of weighted vectors of social tags. When there is a large amount of tags, calculation of the items to be recommended becomes hard, because working with huge vectors is a time-consuming job. The main objective of this thesis is to represent individual tracks (songs) in lower dimensional spaces. An approach is described for creating music recommendations based on user-supplied tags that are augmented with a hierarchical structure extracted for top level genres from Dbpedia. In this structure, each genre is represented by its stylistic origins, typical instruments, derivative forms, sub genres and fusion genres. In addition to very large vector space models, insufficient number of user tags is another problem in the recommendation field. The proposed method is evaluated with different user profiling methods in case of any insufficiency in the number of user tags. User profiles are extended with multi-domain information. By using multi-domain information, the goal of making more successful and realistic predictions is achieved.
Delichatsios, Stefanie Alkistis. "Multi-dimensional ultra-high frequency passive radio frequency identification tag antenna designs." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37050.
Full textIncludes bibliographical references (leaves 77-79).
In this thesis, we present the design, simulation, and empirical evaluation of two novel multi-dimensional ultra-high frequency (UHF) passive radio frequency identification (RFID) tag antennas, the Albano-Dipole antenna and the Albano-Patch antenna, that provide omnidirectional communication capabilities. The performance of a passive UHF RFID tag is highly dependent upon the tag's antenna design, the tag's placement on an item, the materials in the item, and the item's surrounding environment. The majority of existing commercial tag antennas are two-dimensional making the tags a) orientation-sensitive, working well in some directions and not at all in others, and b) susceptible to communication interference from the contents of the tagged object. The Albano antenna designs are three-dimensional, affording the tags to be minimally affected by object material while maintaining near omnidirectional performance. The Albano antenna designs provide significantly improved orientation insensitivity compared with existing widely deployed commercial tag antenna designs.
by Stefanie Alkistis Delichatsios.
M.Eng.
Garrigos, Guillaume. "Descent dynamical systems and algorithms for tame optimization, and multi-objective problems." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS191/document.
Full textIn a first part, we focus on gradient dynamical systems governed by non-smooth but also non-convex functions, satisfying the so-called Kurdyka-Lojasiewicz inequality.After obtaining preliminary results for a continuous steepest descent dynamic, we study a general descent algorithm. We prove, under a compactness assumption, that any sequence generated by this general scheme converges to a critical point of the function.We also obtain new convergence rates both for the values and the iterates. The analysis covers alternating versions of the forward-backward method, with variable metric and relative errors. As an example, a non-smooth and non-convex version of the Levenberg-Marquardt algorithm is detailed.Applications to non-convex feasibility problems, and to sparse inverse problems are discussed.In a second part, the thesis explores descent dynamics associated to constrained vector optimization problems. For this, we adapt the classic steepest descent dynamic to functions with values in a vector space ordered by a solid closed convex cone. It can be seen as the continuous analogue of various descent algorithms developed in the last years.We have a particular interest for multi-objective decision problems, for which the dynamic make decrease all the objective functions along time.We prove the existence of trajectories for this continuous dynamic, and show their convergence to weak efficient points.Then, we explore an inertial dynamic for multi-objective problems, with the aim to provide fast methods converging to Pareto points
Sharpe, Graeme Peter. "Reflective cracking of shear keys in multi-beam bridges." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1912.
Full textPalmer, Victor. "Scaling reinforcement learning to the unconstrained multi-agent domain." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1908.
Full textKelleci, Burak. "Multi-band OFDM UWB receiver with narrowband interference suppression." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2498.
Full textNovitzky, Michael. "TAR: Trajectory adaptation for recognition of robot tasks to improve teamwork." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54367.
Full textRamani, Tara Lakshmi. "An improved methodology for multi-criteria assessment of highway sustainability." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2926.
Full textHollmann, Joseph. "Multi-layer diffusion approximation for photon transport in biological tissue." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1901.
Full textKim, Sung Hyun. "Multi-layer approach to motion planning in obstacle rich environment." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2621.
Full textChristian, Kristi Lynn. "The relationship between the level of antibiotic use and resistance among enteric bacteria in a multi-site integrated human and swine population." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2738.
Full textZhang, Yang. "Control Implementation and Co-simulation of A 6-DOF TAU Haptic Device." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-293508.
Full textInom forskningsområdet virtuell verklighet definieras termen hatisk återgivning (haptic rendering) som processen för beräkning och generering av interaktiva krafter mellan det virtuella objektet och användaren. En av de största utmaningarna med haptisk återgivning är att stabilt simulera känslan av beröring av styv material för användare. Traditionella algoritmer fungerar när det gäller att simulera känslan av beröring av mjuk material, men när algoritmerna används för att simulera kontakt med materialer med stor styvhet kan det orsaka instabilitet hos haptiska enheter. Sådana instabilitet, bland annat svängning hos enheten, kan förstöra den virtuella miljöns exakthet och till och med skada användare. Denna uppsats försöker ta itu med det ovanstående problemet genom att föreslå en ny designmetod. Metoden består av tre huvudsteg: modellering och linearisering med hjälp av ADAMS, design av LQR-positionskontroll, och verifiering med samsimulering (co-simulation). I det första steget skapas systemets simuleringsmodell med hjälp av ADAMS/View. Sedan linjäriseras denna icke-linjära ADAMS-multikroppsdynamikmodell. Modellen exporteras som linjära tillståndsmatriser med hjälp av ADAMS/Linear. I det andra steget designas en LQR-positionskontroll med hjälp av Matlab Simulink baserat på de exporterade matriserna tidigare för att simulera interaktioner med styv material, vilket skiljer sig från de traditionella kraftkontrollalgoritmer (force-control algorithms). I det sista steget utförs verifieringen av positionskontrollens prestanda genom att ställa in samsimulering (co-simulation) mellan ADAMS och Simulink. En testkörning av denna föreslagna metod har utförs på TAU-enheten som tidigare utvecklades av KTH institutionen för maskinkonstruktion. TAU är en asymmetrisk parallellsrobot med sex frihetsgrader för att simulera kirurgiska ingrepp som borrning av hårda vävnader i ben och tänder. Resultaten visar att den linjära modellen som exporteras från ADAMS är tillräckligt korrekt, för den föreslagna positionskontrollen kan framställa en virtuell vägg med styvhet vid 105 N/m.
Hoummady, Emerence. "Étude multi-échelle de l’agglomération pour la lixiviation en tas de minerais uranifères." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0271/document.
Full textHeap leaching allows processing low grade ores. Basically, this industrial mining process consists in percolating a leaching solution slowly down through an ore heap of 6 to 9 meters high to extract the metals of interest. However, fine particles and clays are often the cause of clogging within heaps, leading to a decrease of leaching efficiency. To solve this problem, copper, nickel and uranium industry uses agglomeration of the ore particles. This process allows adjusting the particle size distribution by gathering fine particles. However uranium-ore agglomeration and the impact of the agglomerates structure on heap leaching remains poorly understood. The current thesis allowed characterizing structural and petrophysical properties of agglomerates and its evolution during leaching, studying the influence of agglomeration conditions on agglomerates structures and finally upscaling there results at the heap scale, using meter scale columns. Clogging phenomena were especially due to the mechanical degradation of agglomerates, causing a decrease of both heap porosity and permeability
Li, Tao [Verfasser], Andreas [Akademischer Betreuer] Dreizler, and Shuiqing [Akademischer Betreuer] Li. "Experimental Investigations of Solid Fuel Combustion with Multi-dimensional and Multi-parameter Laser Diagnostics / Tao Li ; Andreas Dreizler, Shuiqing Li." Darmstadt : Universitäts- und Landesbibliothek, 2021. http://d-nb.info/1241248370/34.
Full textCobb, Jeffrey Lee. "A robust window-based multi-node minimization technique using Boolean relations." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2023.
Full textLatif, Nidhal Abbas Abdul. "Trihalomethane compounds in the drinking water of Kuwait : a survey from source to consumer." Thesis, Brunel University, 1991. http://bura.brunel.ac.uk/handle/2438/4973.
Full textWoo, Sang-Bum. "Formation control for cooperative surveillance." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3203.
Full textNair, Aravind R. "Characterization of thermo-mechanical and long-term behaviors of multi-layered composite materials." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1821.
Full textNair, Raji Sasidharan. "Contribution au développement de tags chipless et des capteurs à codage dans le domaine temporel." Thesis, Grenoble, 2013. http://www.theses.fr/2013GRENT008/document.
Full textChipless RFID tags, owing to their low cost, have opened a new way to the identification systems. Chipless RFID tags operating in the time domain have the advantage of being compatible with large reading distances of the order of a few meters, and also can operate in the ISM frequency bands. However, time domain tags developed until now offer poor coding capacity. This thesis proposes a new method to increase the coding capacity of tags operating in time domain by using C-sections, i.e. the transmission lines are folded so as to have tightly coupled zones that give them a dispersive nature. Another approach based on a multi-layer technique was also introduced, in order to increase the coding capacity considerably. Finally, the proof of concept of a humidity sensor tag based on silicon nanowires is also presented
Jongsma, Candice Gene. "Investigating cotranslational integration of a multi-spanning membrane protein into the endoplasmic reticulum membrane." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2894.
Full textRuiz, Vasquez Karla Liliana. "Effect of availability on multi-period planning of subsea oil and gas production systems." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2905.
Full textLiu, Xiaoqun. "Design of multi-channel radio-frequency front-end for 200mhz parallel magnetic resonance imaging." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3159.
Full textAli, Rehan. "An Automated Analysis Of Single Particle Tracking Data For Proteins That Exhibit Multi Component Motion." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/870.
Full textGuitarra, Silvana Raquel. "Modélisation multi-échelles des mémoires de type résistives (ReRAM)." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0537/document.
Full textA model for the switching of resistive random-access memories (ReRAM) is presented. This model is based on two hypotheses: (1) the resistive switching is caused by changes that occur in the narrow zone (active region) of the conductive filament under the influence of the electric field and (2) the resistive switching is a stochastic process governed by a switching probability. The active region is represented by a net of vertical connections, each one composed of three electrical elements: two of them are always low resistive (LR) while the third one acts as a breaker and can be low or high resistive (HR). In the model, the change of the breaker's state is governed by a switching probability (P$_{s}$) that is compared with a random number $p$. P$_{s}$ depend on the voltage drop along the breaker and the threshold voltage, V$_{set}$ or V$_{reset}$ for set (HR to LR) or reset (LR to HR) processes. Two conduction mechanism has been proposed: ohmic for the low resistive state and trap-assisted tunneling (TAT) for the high resistive state. The model has been implemented in Python and works with an external C-library that optimizes calculations and processing time. The simulation results have been successfully validated by comparing measured and modeled IV curves of HfO$_{2}$-based ReRAM devices of nine different areas. It is important to note that the flexibility and easy implementation of this resistive switching model allow it to be a powerful tool for the design and study of ReRAM memories
Ravikumar, Rahul. "Multi-scale texture analysis of remote sensing images using gabor filter banks and wavelet transforms." Thesis, [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3175.
Full textMa, Jia-Shing, and 馬嘉興. "An Efficient Scheduling Algorithm Based On Multi-frequency TAM for SOC Testing." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/20888709876584877208.
Full text淡江大學
電機工程學系碩士班
94
Recent advance in TAM optimization has discussed broadly. The actual restrictions considered are more and more rigorous in their method. For example, they maybe think about the embedded core frequency or power consumption during TAM optimization. But some of the researches usually consider incomplete. It can not do the comprehensive doing in the test amount. Therefore, we take into account the optimization problem as below: first, as each core with different work frequency, we can roughly divide these cores into two sets; high and low frequency; second, each core has its own power consumption under test processes; third, the hierarchy relation does exist between each core. In recent years the advance of CMOS technology has led to a great development, especially on the complexity of the system-on-chip (SOC). It not only increases the layout complexity but also increase the degree of difficulty. As the development of circuit with different technology, the embedded cores embedded into system-on-chips (SOCs) usually have multi-frequency to drive it. In other words, a core may work under different clock cycles. This ability was restricted by its frequency limitation. The total is come to say, all of the core’s working frequency can be divided roughly into two kinds: low-frequency and high-frequency. If we want to test a core at high-speed, we must to be transported the test data at high data rate. This work can be done by ATEs include the Agilent 93000 series tester [1]. But the speech in fact, the test channels with high data rate are constrained on the ATE resource limitations, power rating of the SOC, and scan frequency limit for the embedded cores. On these premise, optimization technique must ensure all of the constraint has already considered, such that high-frequency channels can be used reasonable during SOC test. In this paper, we present a heuristic approach of TAM optimization according to the reality and reduce the test application time. Unlike prior methods that consider the incomplete situation, the proposed method is applicable to the real-world design model with hierarchy SOCs. We pay the price in hardware overhead in order to decrease test application time.
Lin, Wei-Ting, and 林威廷. "Multi-Objective Tag SNPs Selection Using Evolutionary Algorithm." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/14025813629765581941.
Full text國立中正大學
資訊工程所
97
Single nucleotide polymorphism (SNP) has been widely studied in many purposes, of which most focus on selecting a small number of representative SNPs, called tag SNPs, for relative researches and haplotype identification. Since SNPs data may be unavailable from experimental error, robust tag SNPs are proposed to deal with missing SNP data. When the haplotype is long enough, it is expected that tag SNPs is capable of distinguishing some segments in the haplotype. This study formulates the tag SNPs selection problem into a multi-objective optimization problem, seeking for minimum tag SNPs, robust tag SNPs, and dissimilar haplotypes. A famous multiple objectives evolutionary algorithm, NSGA-II, and a many objectives evolutionary algorithm, MSOPS, are adopted to address multi-objective tag SNPs selection. Moreover, this study proposes a greedy based modification for these two algorithms to improve their performance. The experimental results show that MSOPS is superior to NSGA-II for this problem, and the greedy based modification for both algorithms further enhance their search ability. According to the integrated relations between objectives, the combination of diverse SNPs usually has lower tolerance for missing data and number of tag SNPs. This result comes from the rareness of the mutant nucleotides in a single human race, its occurrence is relatively less than wild nucleotides after natural selection.
Shilabhadra, Srijeya, and Mohammed Yasser. "Baseband Processor Design of Multi-purpose RFID Tag." Thesis, 2011. http://ethesis.nitrkl.ac.in/2651/1/The_Final_Thesis__(1).pdf.
Full textHSU, CHUNG-CHIEH, and 徐崇劼. "Biocompatibility and Antibacterial Behaviors of Porous-TaOxNy/TaN/TaN-Ag Multi-Layered Thin Films." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/27c5y6.
Full text明志科技大學
材料工程系碩士班
106
TaON thin films are known to be biocompatible coatings. At the same time, it is also realized that the micro-porosity of films can play a very critical role to improve their cell attachment behaviors. In this study, TaOxNy-Cu(x,y=0~1) thin films were deposited onto TaN/TaN-Ag multi-layered structure using reactive co-sputtering. After deposition, the films were annealed, and Cu phase was totally etched away to form porous TaOxNy (p-TaOxNy) structures. These porous film built on TaN/TaN-Ag layers was used to induce antibacterial behavior and improve biocompatibility. The multi-layered films were characterized using XRD, FESEM, XPS and AFM. The results showed that the porosity of these films could be varied depending on diffusion barrier layer thickness, second annealing time, Cu contents thickness and O/N raitos. The samples were then tested for their biocompatibility and viability using MG-63 cells, and for the antibacterial efficiency against E. coli. According to the results obtained from biocompatibility and MTS assay testing, it was found that the pore size (or roughness) played a major role in terms of biocompatibility and cell viability. The antibacterial efficiency depends on the surface roughness and silver release.
Bhochhibhoya, Rupesh. "Mobile tag reading in a multi-reader RFID environment." 2008. http://digital.library.okstate.edu/etd/umi-okstate-2827.pdf.
Full textLi, Ming-Hsien, and 李明憲. "UHF Passive Tag Design for Multi-Carrier RFID Systems." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/57848612189506954242.
Full text國立臺灣科技大學
電機工程系
101
Passive RFID system is the most popular system be used all over the world. In this system, a passive RFID tag gains its power from reader emitting electromagnetic wave, and backscatter its responding signal to the reader. However, Because of the large propagation loss, the accessible range of a passive RFID tag is hence limited. In order to mitigate the problems, a multi-carrier UHF passive RFID system utilizes isolated continuous wave emitters to provide additional power to passive RFID tags. This approach however reduces the modulation depth of reader command signals and results in reader signal demodulation error in a passive RFID tag. This work proposes a new passive RFID tag demodulation circuit which can extend the tag read range in a multi-carrier system. Two types of passive RFID tag architecture are proposed. One uses a narrow band impedance matching circuit before the envelope detector to prevent the signal from the continuous wave emitter passing through the demodulator. The other uses a band-pass SAW filter simulator, which is designed according to the specification of a real product, before the envelope detector to suppress the signal from the continuous wave emitter. Simulation results show that both tag designs can overcome the modulation depth constraint, and are in accordance with theoretical analysis. This study uses Agilent Advanced Design System software to simulate a multi-carrier passive RFID system, which is used to verify the proposed passive RFID tag design and to analyze its performance and feasibility.
MacDonald, Christy. "Multi-Jurisdictional Tax Incentives and the Location of Innovative Activities." Thesis, 2009. http://hdl.handle.net/10012/4595.
Full text