Dissertations / Theses on the topic 'Random shifts'
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Göransson, (Asker) Christian. "First-Principles calculations of Core-Level shifts in random metallic alloys: The Transition State Approach." Thesis, Linköping University, Department of Physics, Chemistry and Biology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2581.
Full textThe overall aim of this thesis is to compare different methods for calculation of Core-Level shifts in metallic alloys. The methods compared are the Initial State model, the Complete screening and the Transition state model. Core-level shifts can give information of chemical bonding and about the electronic structure in solids.
The basic theory used is the so-called Density-Functional-Theory, in conjunction with the Local-Density Approximation and the Coherent-Potential- Approximation. The metallic alloys used are Silver-Palladium, Copper-Palladium, Copper-Gold and Copper-Platinum, all inface-centered-cubic configuration.
The complete screening- and the transition-state model are found to be in better agreement with experimental results than those calculated with the initial state model. This is mainly due to the fact that the two former models includes final-state effects, whereas the last one do not. The screening parameters within the Coherent-Potential approximation are also investigated. It is found that the Screened-Impurity Model can extend the validity of the Coherent-Potential-Approximation and increase it's accuracy.
Alvaro, Polack Dennis Leonardo, and Longa Ángel Guillén. "Modelling the volatility of commodities prices using a stochastic volatility model with random level shifts." Master's thesis, Pontificia Universidad Católica del Perú, 2015. http://tesis.pucp.edu.pe/repositorio/handle/123456789/6379.
Full textTesis
Ojeda, Cunya Junior Alex. "An application of a random level shifts model to the volatility of peruvian stock and exchange rate reterns." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2016. http://tesis.pucp.edu.pe/repositorio/handle/123456789/8424.
Full textTesis
Doloca, Nicolae Radu. "Random phase shift interferometer." Aachen Shaker, 2008. http://d-nb.info/989418529/04.
Full textDoloca, Nicolae R. [Verfasser]. "Random phase shift interferometer / Nicolae R Doloca." Aachen : Shaker, 2008. http://d-nb.info/1162918705/34.
Full textRachakonda, Ravi Kanth. "Crew rostering problem a random key genetic algorithm with local search /." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1230931714.
Full textLian, Guinan. "Testing Primitive Polynomials for Generalized Feedback Shift Register Random Number Generators." Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd1131.pdf.
Full textXing, Zhiliang. "Identification of the variance of the wave exciting rolling moment using ship's random response /." Internet access available to MUN users only, 2003. http://collections.mun.ca/u?/theses,170296.
Full textFryer, David Kenneth. "The application of random signals to models for evaluating the performance of ships." Thesis, University of Portsmouth, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306154.
Full textMarten, Tobias. "Ab-initio study of disorder broadening of core photoemission spectra in random metallic alloys." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2580.
Full textAb-initio results of the core-level shift and the distribution about the average for the 3d5/2 electrons of Ag, Pd and 2p3/2 of Cu are presented for the face-centered-cubic AgPd and CuPd random alloys. The complete screening model, which includes both initial and final states effects in the same scheme, has been used in the investigations.
The alloys have been modeled with a supercell containing 256 atoms. Density-functional theory calculations are carried out using the locally self consistent Green's function approach.
Results from the calculations clearly shows that the core-level shift distributions characteristic is Gaussian, but the components reveals a substantial difference in the FWHM (Full-Width at Half-Maximum). Comparison between the experimental and the calculated broadening shows a remarkable agreement.
Xu, Jinzhong. "Stream Cipher Analysis Based on FCSRs." UKnowledge, 2000. http://uknowledge.uky.edu/gradschool_diss/320.
Full textGonzáles, Tanaka José Carlos. "An empirical applicatin of a random level shift model with time-varying probability and mean reversion to the volatility of Latin-America forex market returns." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2017. http://tesis.pucp.edu.pe/repositorio/handle/123456789/8482.
Full textSiguiendo el trabajo de Xu y Perron (2014), este documento utiliza datos diarios de volatilidades de retornos cambiarios para seis mercados de América Latina (Argentina, Brazil, Chile, Colombia, Mexico and Peru). Cuatro modelos del tipo Random Level Shifts (RLS) son estimados: un modelo básico donde las probabilidades de cambios de nivel son gobernadas por una variable del tipo Bernouilli pero dicha probabilidad es constante; un modelo donde las probabilidades son cambiantes en el tiempo y dependen de los retornos bursátiles extremos negativos del periodo anterior; un modelo con reversión a la media; y un modelo que incorpora los dos aspectos mencionados anteriormente. Los resultados sugieren tres importantes aspectos: el primero es que los cuatro modelos RLS ajustan bien los datos con prácticamente todos los estimados altamente significativos; segundo, la característica de larga memoria desaparece completamente de la ACF, incluyendo los efectos GARCH; y, tercero, la performance de los cuatro modelos en términos de predicción es buena contra diferentes modelos rivales como los modelos GARCH, FIGARCH, y dos modelos ARFIMA.
Tesis
Aujla, Harinder. "The role of second messengers in the prefrontal cortex in memory, assessment using the random foraging and delayed win-shift tasks on an eight arm radial maze." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0007/MQ42584.pdf.
Full textBeerwerth, Randolf [Verfasser], Stephan [Gutachter] Fritzsche, J. Gutachter] Bieron, and Tomas [Gutachter] [Brage. "Electron correlation in relativistic multiconfiguration calculations of isotope shift parameters, hyperfine coupling constants and atomic processes / Randolf Beerwerth ; Gutachter: Stephan Fritzsche, J. Bieron, Tomas Brage." Jena : Friedrich-Schiller-Universität Jena, 2019. http://d-nb.info/1206542586/34.
Full textLin, Shu-Chuan. "Robust estimation for spatial models and the skill test for disease diagnosis." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26681.
Full textCommittee Chair: Lu, Jye-Chyi; Committee Co-Chair: Kvam, Paul; Committee Member: Mei, Yajun; Committee Member: Serban, Nicoleta; Committee Member: Vidakovic, Brani. Part of the SMARTech Electronic Thesis and Dissertation Collection.
Olovsson, Weine. "Influence of Global Composition and Local Environment on the Spectroscopic and Magnetic Properties of Metallic Alloys." Doctoral thesis, Uppsala University, Department of Physics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5823.
Full textTheoretical investigations of spectroscopic and magnetic properties of metallic systems in the bulk, as well as in nanostructured materials, have been performed within the density functional theory. The major part of the present work studies the differences between binding energies of electrons tightly bound to the atoms, the so-called core electrons (in contrast with the valence electrons), that is, core-level binding energy shift (CLS).
By comparison between corresponding elemental core-levels for atoms situated in different chemical environments we obtain fundamental understanding of bonding properties of materials. The method of choice was the complete screening picture, which includes initial and final state effects on the same footing. The usefulness of CLS stems from that it is sensitive to differences in the chemical environment of an atom, which can be affected on one hand by the global composition of e.g. disordered materials, surfaces and interfaces, and on the other hand by the very local environment around an atom. Here CLSs have been obtained for both components in the fcc random alloys AgPd, CuPd, CuNi, CuPt, CuAu, PdAu, NiPd and NiPt. Moreover the model was extended to the Auger kinetic energy shift for the LMM Auger transition in AgPd alloys. Studies were also applied to the near surface and interface regions of PdMn nano structures on Pd(100), thin CuPd and AgPd films on inert Ru(0001), and at interfaces. The disorder broadening on CLS due to local environment effects was calculated in selected alloys.
A part of the thesis concern investigations related to the magnetic ordering in Invar alloys, including the influence of local environment effects. A study was made for the dependence of effective exchange parameter on the electron concentration, volume and local chemical composition.
Younger, Laura Sue. "HIV/AIDS literature the effects of representation on an ethics of care /." Connect to this title online, 2004. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1092520560.
Full textDocument formatted into pages; contains 282 p. Includes bibliographical references. Abstract available online via OhioLINK's ETD Center; full text release delayed at author's request until 2007 Aug. 16.
Gram, Greta. "SUN PIECE : actions of cutting." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17071.
Full textProgram: Modedesignutbildningen
Raghavan, Anand. "Interference cancellation for collocated wireless radios." Diss., Available online, Georgia Institute of Technology, 2007, 2007. http://etd.gatech.edu/theses/available/etd-06272007-234911/.
Full textLaskar, Joy, Committee Chair ; Cressler, John, Committee Member ; Kornegay, Kevin, Committee Member ; Tentzeris, Emmanouil, Committee Member ; Lee, Chang-Ho, Committee Member.
Oliver, Gelabert Antoni. "Desarrollo y aceleración hardware de metodologías de descripción y comparación de compuestos orgánicos." Doctoral thesis, Universitat de les Illes Balears, 2018. http://hdl.handle.net/10803/462902.
Full textIntroducció El creixement accelerat de les dades en la societat actual i l'arribada de la tecnologia del transistor als límits físics exigeix la proposta de metodologies per al processament eficient de dades. Contingut Aquesta tesi doctoral, de caràcter transdisciplinària i a mig camí entre els camps de l'enginyeria electrònica i la química computacional presenta solucions optimitzades en maquinari i en programari per tal d’accelerar el processament de bases de dades moleculars. En primer lloc es proposa i s'estudia el funcionament de blocs digitals que implementen funcions de lògica polsant estocàstica aplicades a tasques de reconeixement d'objectes. En concret es proposen i analitzen dissenys específics per a la construcció de generadors de nombres aleatoris (RNG) com a sistemes bàsics per al funcionament dels sistemes de computació estocàstics implementats en dispositius programables com les Field Programable Gate Array (FPGA). En segon lloc es proposen i avaluen un conjunt reduït de descriptors moleculars especialment orientats a la caracterització de compostos orgànics. Aquests descriptors reuneixen la informació sobre la distribució de càrrega molecular i les energies electroestàtiques. Les bases de dades generades amb aquests descriptors s’han processat emprant sistemes de computació convencionals en programari i mitjançant sistemes basats en computació estocàstica implementats en maquinari programable. Finalment es proposen optimitzacions per al càlcul del potencial electroestàtic molecular (MEP) calculat mitjançant la teoria del funcional de la densitat (DFT) i dels punts d’interacció que se’n deriven (SSIP). Conclusions Per una banda, els resultats obtinguts posen de manifest la importància de la uniformitat del RNG en el període d’avaluació per a poder implementar sistemes de computació estocàstics d’alta fiabilitat. A més, els RNG proposats presenten una font d’aleatorietat aperiòdica que minimitza les correlacions entre senyals, fent-los adequats per a la implementació de sistemes de computació estocàstica. Per una altra banda, el conjunt de descriptors moleculars proposats PED, han demostrat obtenir molts bons resultats en comparació amb els mètodes presents a la literatura. Aquest fet ha estat discutit mitjançant l’anàlisi dels paràmetres Area Under The Curve (AUC) i Enrichment Factor (EF) de les curves Receiving Operating Characteristic (ROC) analitzades. A més, s’ha mostrat com l’eficàcia dels descriptors augmenta de manera significativa quan s’implementen en sistemes de classificació amb aprenentatge supervisat com les finestres de Parzen, fent-los adequats per a la construcció d’un sistema de predicció de dianes terapèutiques eficient. En aquesta tesi doctoral, a més, s’ha trobat que els MEP calculats mitjançant la teoria DFT i el conjunt de bases B3LYP/6-31*G en la superfície amb densitat electrònica 0,01 au correlacionen bé amb dades experimentals possiblement a causa de la contribució més gran de les propietats electroestàtiques locals reflectides en el MEP. Les parametritzacions proposades en funció del tipus d’hibridació atòmica han contribuït també a la millora dels resultats. Els càlculs realitzats en aquestes superfícies suposen un guany en un factor cinc en la velocitat de processament del MEP. Donat l’acceptable ajust a les dades experimentals del mètode proposat per al càlcul del MEP aproximat i dels SSIP que se’n deriven, aquest procediment es pot emprar per obtenir els SSIP en bases de dades moleculars extenses i en macromolècules (com ara proteïnes) d’una manera molt ràpida (ja que la velocitat de processament obtinguda arriba fins als cinc mil àtoms per segon amb un sol processador). Les tècniques proposades en aquesta tesi doctoral resulten d’interès donades les nombroses aplicacions que tenen els SSIP com per exemple, en el cribratge virtual de cocristalls o en la predicció d’energies lliures en dissolució.
Introduction Because of the generalized data growth in the nowadays digital era and due to the fact that we are possibly living on the last days of the Moore’s law, there exists a good reason for being focused on the development of technical solutions for efficient data processing. Contents In this transdisciplinary thesis between electronic engineering and computational chemistry, it's shown optimal solutions in hardware and software for molecular database processing. On the first hand, there's proposed and studied a set of stochastic computing systems in order to implement ultrafast pattern recognition applications. Specially, it’s proposed and analyzed specific digital designs in order to create digital Random Number Generators (RNG) as a base for stochastic functions. The digital platform used to generate the results is a Field Programmable Gate Array (FPGA). On the second hand, there's proposed and evaluated a set of molecular descriptors in order to create a compact molecular database. The proposed descriptors gather charge and molecular geometry information and they have been used as a database both in software conventional computing and in hardware stochastic computing. Finally, there's a proposed a set of optimizations for Molecular Electrostatic Potential (MEP) and Surface Site Interaction Points (SSIP). Conclusions Firstly, the results show the relevance of the uniformity of the RNG within the evaluation period in order to implement high precision stochastic computing systems. In addition, the proposed RNG have an aperiodic behavior which avoid some potential correlations between stochastic signals. This property makes the proposed RNG suitable for implementation of stochastic computing systems. Secondly, the proposed molecular descriptors PED have demonstrated to provide good results in comparison with other methods that are present in the literature. This has been discussed by the use of Area Under the Curve (AUC) and Enrichment Factor (EF) of averaged Receiving Operating Characteristic (ROC) curves. Furthermore, the performance of the proposed descriptors gets increased when they are implemented in supervised machine learning algorithms making them appropriate for therapeutic target predictions. Thirdly, the efficient molecular database characterization and the usage of stochastic computing circuitry can be used together in order to implement ultrafast information processing systems. On the other hand, in this thesis, it has been found that the MEP calculated by using DFT and B3LYP/6-31*G basis at 0.01 au density surface level has good correlation with experimental data. This fact may be due to the important contribution of local electrostatics and the refinement performed by the parameterization of the MEP as a function of the orbital atom type. Additionally, the proposed calculation over 0.01 au is five times faster than the calculation over 0.002 au. Finally, due to acceptable agreement between experimental data and theoretical results obtained by using the proposed calculation for MEP and SSIP, the proposed method is suitable for being applied in order to quickly process big molecular databases and macromolecules (the processing speed can achieve five thousand molecules per second using a single processor). The proposed techniques have special interest with the purpose of finding the SSIP because the big number of applications they have as for instance in virtual cocrystal screening and calculation of free energies in solution.
Bayer, Tomáš. "Návrh hardwarového šifrovacího modulu." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218076.
Full textHsieh, Kuo-wei, and 謝國偉. "Parallel Linear Random Number Generators With Different Increment Shifts." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/82824144233817115153.
Full text國立交通大學
統計學研究所
94
Two major linear random number generators (RNGs), the linear congruential generator (LCG) and the multiple recursive generator (MRG), have been widely studied and used for many decades. Nowadays, as the price decreasing of computer processors, parallelization of the generators is being concerned for, at least, the computational efficiency purpose. Besides, the proper design of parallel generator may also improve some statistical properties such as randomness. The Parallel linear random number generator with different increment shifts is efficient and feasible because the change of the increments only shifts the hyperplanes of the linear RNG. Additionally, parallelizing through the leapfrogging method can further improve than through the sequence splitting method.
CHEN, YU-KUANG, and 陳育寬. "Optimal CUSUM and EWMA Control Chart Design under Random Shifts and Quality Loss." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/75013552758734610999.
Full text國立臺灣大學
工業工程學研究所
89
In Statistical process control, control charts are usually to be used for detecting changes in the mean of the process. In the recent literature, EWMA and CUSUM become the focus of discussion because the more complicated setting requirement of their superiority over Shewhart control charts. Traditionally, average run length (ARL) is used to evaluate the control chart performance and to find the best design given a known shift. Base on the concept of quality loss, the bigger shift size cause more quality loss than smaller one does. Thus, to more accurately evaluate control chart designs, the capability of control charts to detect different shift size should be taken into consideration. Furthermore, in real situations, the shift size usually varies. In this research, we will consider the ARL, random shifts and quality loss simultaneously to find the best design of EWMA and CUSUM control charts. Finally, we will provide a quick and accurate control chart design guideline for practitioners to design their own control charts. Our analysis results show that EWMA control charts are more effective than CUSUM charts for smaller shift sizes. After comparing with designs using traditional methods, we also find that our new approach will save 10%~30% quality losses.
Tung, CnengPiao, and 董正彪. "An Integrated Run by Run Controller for Processes Subject to Random Shifts and Drifts." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/94302822476316416845.
Full text國立臺灣大學
工業工程學研究所
87
Manufacturing processes are subject to small and large special disturbances such as process drifts or shifts. In many cases the causes of disturbances are known, but it is either impossible or too expensive to remove them. In such cases, when the resulting output deviations can be compensated by adjusting the processing recipe, process control techniques such as the run-by-run feedback control scheme will be useful. In this thesis, we present an integrated run-by-run controller for processes subject to random shifts and drifts. For controlling process drifts, the controller has been designed based on the formulation of Double Exponentially Weighted Moving Average (D-EWMA). By adding the self-tuning (ST) feature into the D-EWMA controller, the resulting STD-EWMA controller is able to controlling random shifts more effectively. Monte Carlo simulation results validate that our STD-EWMA controller is superior to the current run-by-run process controllers such as the EWMA controller or Predictor-Corrector controller.
梁晉源. "Detection of LTE Random Access Signals in Multipath Channels with Possibly Large Doppler Shifts." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/63390893971598600102.
Full text國立交通大學
電子工程學系 電子研究所
102
The thesis studies the random access detection schemes in LTE-A system. In random access detection procedure, the base station needs to determine whether random access preambles are transmitted by the users. In this thesis, we first develop transmission system model, in which we consider the symbol timing offset (STO), carrier frequency offset (CFO), and multipath channels. Then we formulate the problem by the multiple hypothesis and binary hypothesis testing. Due to high computational complexity for implementation of multiple hypothesis testing, we focus on the binary hypothesis testing formulation. We use the generalized likelihood testing technique (GLRT) as a detection criterion to solve the problem, in which we need to get the maximum likelihood estimate (MLE) of the STO, CFO, and channel. In the derivation, we also propose an approximation of the GLRT to further reduce the computational complexity. In the simulation we verify our proposed GLRT detector performance with difference values of CFO and different kind of channel model including AWGN and Standford University Interim (SUI).
Chen, Jin-Jung, and 陳進忠. "Run to Run Control Methods for Semiconductor Manufacturing Processes Subject to Random Shifts and Drifts." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/93927416344894001095.
Full text國立臺灣大學
機械工程學研究所
88
Semiconductor manufacturing processes are subject to small and large special disturbances such as process drifts or shifts. In many cases the causes of disturbances are known, but it is either impossible or too expensive to remove them. In cases such as these and the output deviations are controllable (without removing the root causes), run-to-run feedback adjustment schemes will be useful. In this thesis, for controlling process shifts, we present a self-tuning control module in which the control parameter is re-tuned sequentially to compensate for the deviation of process output''s from the target. For controlling process drifts, the control methods have been designed based on the formulation of Double Exponentially Weighted Moving Average (D-EWMA). The optimal determination the parameters of the DEWMA and PCC control methods depends on a trade-off between steady-state and transient performance. By adding the self-tuning (ST) feature into the DEWMA and PCC control methods, the resulting ST-DEWMA and ST-PCC control methods are able to control processes subject to random shifts and drifts more effectively. Monte Carlo simulations and the CMP process validation results show that the ST-DEWMA and ST-PCC control methods have better overall performance for processes subject to both random shifts and drifts.
Chuang, Li-Yang, and 莊禮陽. "Modeling the Statistical Variability of Random Telegraph Signals Induced Threshold Voltage Shifts in Nanoscale MOSFETs and FinFETs." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/vyav52.
Full text國立交通大學
電子工程學系 電子研究所
104
The trapping and de-trapping of single electron at the Si/SiO2 interface of planar bulk metal -oxide-semiconductor field effect transistors (MOSFETs) and fin-shape field effect transistors (FinFETs), which is called random telegraph signals (RTSs), has been a well-known issue for the reliability of the nanoscale device. In this work, we proposed a novel graphical method to enable the analysis of the MOSFET or FinFET threshold voltage shift Vth induced by RTS-trap in a percolative channel. First, according to the Mueller-Schulz’s percolation theory and through the help of 3D-technology aided design (TCAD) simulation with no percolation, both a minimum Vth and a critical curve in a mloc-loc plot are produced. Here, mloc and loc are the mean and standard deviation, respectively, of a normal distribution. The critical mloc-loc curve divides the plot into the allowed region and the forbidden region. Then, Vth contours in the allowed region are graphically created. By comparing existing experimental or simulated Vth statistical distributions, we are able to extract paired mloc and loc which represent a particular percolation pattern. Furthermore, through 3D-TCAD simulation, we derive a computationally efficient model which can be applied for constructing the FinFET Vth statistical distribution in a percolation-free channel. Last but not least, bias and temperature instability (BTI) condition is added to RTSs discussion.
Wang, Huan-Hsiang, and 王煥翔. "Modeling the Statistical Distribution of Random Telegraph Signals Magnitudes and Induced Threshold Voltage Shifts in Subthreshold Nanoscale MOSFETs." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/40247914553609396967.
Full text國立交通大學
電子工程學系 電子研究所
103
The trapping and detrapping of an electron at the SiO2/Si interface of metal-oxide-semiconductor field effect transistor (MOSFET), which is known as random telegraph signals (RTS), has been an important issue for the variability of the nanoscale device. Recently, 3D-technology aided design (TCAD) simulations have been widely used for RTS topics. The trap positions in the channel will have its corresponding ΔId/Id magnitude in the subthreshold region at a low drain voltage. There are two distinct ΔId/Id distributions: a headed one for the percolation-free channel and a tail one for the percolative channel. The tail distribution can be described by using a literature formula 〖∆I〗_d/I_d =(I_loc/I_d )^2, where Iloc is the local current around the trap. Our proposed model can reproduce headed distribution through few 3D-TCAD simulations on 35x35 nm2 channel to obtain the Id/Id for each trap position. The model is in closed form, and the key criteria are drawn from the model for the use of I_loc/I_d formula. Furthermore, the threshold voltage shift distributions can be transformed from the tail distributions, from subthreshold to inversion. The channel width effect can be included through applying the width effect into our headed distributions. Importantly, the use of the analytic model can overcome the disadvantage of statistical experiments or simulations.
Liao, Chen-Hsuan, and 廖晨瑄. "Modeling the Statistical Variability of Process and Random Telegraph Signals Induced Threshold Voltage Shifts in Nanoscale MOSFETs and FinFETs." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/33925910257458133100.
Full text國立交通大學
電子研究所
105
The trapping and de-trapping of a single electron at the Si-SiO2 interface of planar bulk metal -oxide-semiconductor field effect transistors (MOSFETs) and fin-shape field effect transistors (FinFETs), which is called random telegraph signals (RTSs), has been a well-known issue for the reliability of the nanoscale device. In this work, with the help of Matlab and 3-D technology-aided design (TCAD), we not only reproduce RTS experimental data but also make a prediction of possible worst case threshold-voltage fluctuation amplitude in both MOSFETs and FinFETs. We also propose a mloc-σloc boundary where mloc and σloc are the mean and the standard deviation, respectively, of the channel local current density. The critical mloc-loc curve divides the plot into the allowed and forbidden region. The allowed region includes all possible (mloc, σloc) sets that help us to reproduce experimental data. Furthermore, we take metal gate granularity (MGG) percolation into account. RTS under MGG percolation causes the device threshold-voltage fluctuating more serious. Necessarily, a large number of simulation tasks are carried out to investigate it. Different device sizes and different average metal grain sizes are considered in this work. By statistics, we can finely reproduce Intel’s data and even give a next-generation guide-line for circuit designers.
"Assessing Ponderosa Pine (Pinus ponderosa) Suitable Habitat throughout Arizona in Response to Future Climate Models." Master's thesis, 2011. http://hdl.handle.net/2286/R.I.8916.
Full textDissertation/Thesis
M.S. Applied Biological Sciences 2011
"Random coil phosphorus chemical shift of deoxyribonucleic acids." 2004. http://library.cuhk.edu.hk/record=b5896196.
Full textThesis (M.Phil.)--Chinese University of Hong Kong, 2004.
Includes bibliographical references (leaves 89-94).
Abstracts in English and Chinese.
Acknowledge --- p.ii
Table of Contents --- p.iii
Lists of Tables --- p.vi
Lists of Figures --- p.vii
Abstract (English Version) --- p.x
Abstract (Chinese Version) --- p.xii
Chapter 1. --- Literature Survey of Phosphorus Chemical Shift Studies of DNA --- p.1
Chapter 1.1 --- Introduction --- p.1
Chapter 1.2 --- General Review of DNA Structures --- p.2
Chapter 1.2.1 --- "Nomenclature, Symbols and Numbering Scheme" --- p.2
Chapter 1.2.2 --- Conformations of DNA --- p.7
Chapter 1.2.3 --- Random Coil State --- p.8
Chapter 1.3 --- Phosphorus Chemical Shift Studies of DNA --- p.9
Chapter 1.4 --- Purpose of This Work --- p.10
Chapter 2. --- Methodology for Studying the Sequence Effect on Random Coil Phosphorus Chemical Shift --- p.12
Chapter 2.1 --- Introduction --- p.12
Chapter 2.2 --- Determination of Sequence Effect --- p.12
Chapter 2.3 --- Design of Sequence --- p.13
Chapter 2.4 --- Sample Preparation --- p.14
Chapter 2.5 --- Measurement of Phosphorus Chemical Shift --- p.16
Chapter 2.5.1 --- Proton Resonance Assignments --- p.16
Chapter 2.5.2 --- Phosphorus Resonance Assignments --- p.20
Chapter 2.6 --- Determination of Sugar Conformation --- p.23
Chapter 2.7 --- Determination of Backbone Conformation --- p.25
Chapter 3. --- Results and Discussion of Random Coil Phosphorus Chemical Shift of DNA --- p.28
Chapter 3.1 --- Introduction --- p.28
Chapter 3.2 --- Resonance Assignments --- p.28
Chapter 3.3.1 --- Proton Resonance Assignments --- p.31
Chapter 3.3.2 --- Phosphorus Resonance Assignments --- p.31
Chapter 3.3 --- Verification of Random Coil State --- p.31
Chapter 3.2.1 --- Variable Temperature Proton Chemical Shift --- p.31
Chapter 3.2.2 --- Sugar Conformation --- p.32
Chapter 3.2.3 --- Backbone Conformation --- p.33
Chapter 3.4 --- Random Coil Phosphorus Chemical Shift of DNA --- p.33
Chapter 3.4.1 --- Temperature Effect --- p.33
Chapter 3.4.2 --- Neighbor Effect --- p.36
Chapter 3.5 --- Random Coil Phosphorus Chemical Shift Prediction --- p.42
Chapter 3.5.1 --- Dimer Model Prediction Protocol --- p.42
Chapter 3.5.2 --- Trimer Model Prediction Protocol --- p.45
Chapter 4. --- Conclusions and Future Work --- p.48
Appendix I H6/H8-H1' regions of 2D NOESY spectra of SS1-SS16 --- p.49
"Appendix II 'H and 31P resonance assignments and 3Jhi1,h2,3Jh1,h2´ح and 3Jh3,p coupling constants of SS1-SS16" --- p.57
Appendix III H3' regions 1H-31P HSQC spectra of SS1-SS16 --- p.65
Appendix IV H1,-H2,/H2´حregions of DQF-COSY spectra of SS1- SS16 --- p.73
Appendix V H3' regions of 1H-31P selective heteronuclear COSY spectra of SS1-SS16 --- p.81
References --- p.89
Yeh, Pin Wei, and 葉品維. "Shuffle-Mixing Random Number Generator with Circular Shift Addition Technique." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/89umg7.
Full textMedury, Yajulu. "Dynamic response of ships in random waves." 1985. http://catalog.hathitrust.org/api/volumes/oclc/12685677.html.
Full textShiu, Hung-Jiun, and 徐弘峻. "Windowed Fourier filtering and phase extraction algorithm for random phase shift interference microscope." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/85346141046877020100.
Full text國立中興大學
機械工程學系所
102
Traditional isometric phase-shift method is commonly used in contour reconstruction. Accuracy of contour often depends on the precision of piezoelectric materials and the anti-vibration table. In this article, software-based algorithms are used to cope with the phase-shift errors caused by imperfect phase-shifting mechanisms or even when the phase shifts are completely random. The advanced random iterative algorithm was used in this paper. Only three randomly shifted interferograms are required for accurate extraction of phase information. In addition, the algorithm is simple and fast. We use Matlab to write the advanced iterative algorithm(AIA). And simulation in the presence of noise, the different number of interferograms for accurate extraction of phase shift. In addition, we remove the noise in the wrapped phase map by windowed Fourier filter(WFF). After processing, we can use sequential line scanning method for phase unwrapping, which is the simplest method for phase unwrapping. SNR will also become better. We also simulate performance of windowed Fourier filter in the presence of noise. After filtering, the signal can be reserved and also can effectively remove noise. The advantages of WFF over discrete orthogonal wavelet transform are a wide range of threshold selection and the windowed Fourier basis is more adaptive to the wrapped phase extract from AIA. The advantage of WFF over conventional Fourier transform is the spectrum of WFT reflects the local property of the signal and thus the noise can be more effectively reduced. Through MATLAB simulation, the AIA random phase shift technique in the interferograms with high SNR value, random three step and four step and five step has the stability and accuracy of certain. But when the interferograms with low SNR, three step phase shifting obviously sensitive to the noise, leading to error is higher than random five step and random four step. In order to ensure measurement accuracy when SNR of interferogram is poor, recommend using at least four random phase shifted interferograms to reconstruct contour. In the WFF simulations, we verify the mathematical model derived from WFF has a wide range of threshold selection, so the threshold value can easily be selected.
Lin, Yen-Ju, and 林晏如. "A Study on Queuing Pricing to Ships with Regular and Random Arrivals." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/90898332808073576966.
Full text國立臺灣海洋大學
商船學系所
100
Taiwan's economy is mainly dependent on maritime transportation to trade. Maritime transportation uses the vessel to carry cargo. The loading type of the vessel may divide into two types: container ship and bulk carrier. The container ship is the liner one, which has a fixed route, sailing and port. And it always uses the gantry crane to load and unload the containers. However, the bulk carrier is the tramp ship and its delivery time and frequency is decided for the charter party. The bulk carrier has lots of different types of cargo and its loading and unloading equipment also depends on the different types of cargo, so the loading of various goods in bulk carrier all the different loading rates. In this research, the major differences between the operating characteristics of container ships and bulk carriers were established on regular and random arrival non queuing toll , due to reduce the queuing time of container ships and bulk carriers berth in the anchorage area. This is the previous literature has not yet investigate part. The contents of this research is divided into two parts, first one is about the regular arrival in queuing pricing scheme, mainly use of the known number of loading and unloading container in containerships to calculate the total length of queuing time in queuing pricing scheme. The other one is about the random arrival queuing pricing scheme which uses Poisson distribution to find a variety of bulk carriers in the fixed port of arrival probability, then to a variety of bulk cargo per hour in average loading and unloading capacity in the berth, calculated the total length of queuing time. Base on “the invariant equilibrium costs principle”, to make the non queuing toll scheme with regular and random arrival. In addition, by calculating the equilibrium arrival rate and to compare the distribution situation, help the port authority to predict distribution and movement trajectory of arrived time about container ships and bulk carriers in the tolls.
Lin, Xin Hong, and 林信宏. "Hardware-Efficient Implementation of Maximum-Period Pseudo Random Number Generators Using Programmable Barrel Shifters." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/m3r4k9.
Full textXu, Jiawen. "Econometric methods related to parameter instability, long memory and forecasting." Thesis, 2013. https://hdl.handle.net/2144/14090.
Full textKuo, Yao-Hsin, and 郭耀新. "Random Assignment of Shifted Carrier-Hopping Prime Codes to Enhance Confidentiality in Wavelength-Time Optical CDMA Networks." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/31095077491792455741.
Full text國立成功大學
電腦與通信工程研究所
97
Conventional optical code division multiple access (OCDMA) techniques suffer from inherent security disadvantages has been studied. In order to overcome vulnerability to eavesdropping of on-off-keying based OCDMA scheme, we propose a new scheme for confidentiality enhancement based on multi-code (M-code) keying approach of wavelength-hopping/time-spreading (WH/TS) OCDMA networks and applied to code reconfiguration mechanism. The code reconfiguration is achieved by exclusively assigning to each user a set of M shifted carrier-hopping prime codes (CHPC) and randomly selecting code word among M codes to represent user’s data bits. In addition, a central controller monitors network condition and regulates transmitter/receiver to perform code word selection. To integrate M-code keying with code reconfiguration mechanism, we utilize an optical switch not only switches symbol-to-symbol performing M-ary data modulation but following central controller’s instruction performing code changing. Hence, the assignment of code word and changing code word mechanism is more flexibility and easy to implement. In this thesis, we also analyze the security performance of proposed system. Evaluating the probability of code word interception is quantified the degree of data confidentiality. The result shows that the probability of error-free code detection gets worse when M increases and the eavesdropper processes code word detection more difficult, thus data confidentiality could be significantly increased. In addition, the proposed scheme using shifted CHPC appears to be a promising coding type for generating OCDMA code space that are large enough to prevent successful brute force code search attacks. Moreover, rapid code reconfiguration mechanism can increase the difficulty of interception but also makes the network management more difficult.
Su, Sheng-yuan, and 蘇聖元. "Stability improvement of a phase-detection-based surface-plasmon-resonance system by using phase shifting interferometry with a random-shift tolerant algorithm." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/09844609347549147600.
Full text國立中央大學
光電科學與工程學系
101
Stability improvement of a phase-detection-based surface-plasmon-resonance system is the topic in this thesis.By using phase-shifting interferometry with a random-shift tolerant algorithm replace five steps algorithm to solve Hysteresis effect and the other something would influence phase-shift to improve stability of system.Currently random-shift tolerant algorithm in this thesis, the mean error was 0.0019 waves and also to solve the problem that the triangle signal the five steps algorithm cann’t deal with and the phase-shifting interferometry with a random-shift tolerant algorithm cann’t deal with the Gaussion beam of laser.Using Twyman-Green interferometer to do the Gaussion beam interference experiment. The resulting mean error of phase-shift was 0.031 waves.In SPR(Surface Plasmon Resonnace) system,it would enter the water to measure stability of the system.In entering water condition, the stability was 0.044radians in 300-second period .It was also better than 0.065radians the result was calculated by five steps algorithm.To using the new algorithm in SPR system deal with the major problem that the triangle signal five steps algorithm cann’t do and improve the stability slightly.
Weng, Heng-Jui, and 翁珩瑞. "Simulation and Analysis of the Statistical Variability of Metal Gate Granularity and Random Telegraph Signals Induced Threshold Voltage Shift in Nanoscale FinFETs." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ggw6j4.
Full text國立交通大學
電子研究所
106
In current semiconductor device process, the process variability is a crucial issue. For all characteristics associated with process variation, random variation of threshold voltage is especially important. In this thesis, with the help of commercial 3D technology computer-aided design (TCAD) Sentaurus, we build up our simulation structure calibrated with respect to Intel published 14-nm technology node FinFET device. TiN is chosen to be the metal gate material. We assume metal gate granularity (MGG) as the main source of process variation to simulate the distribution of threshold voltage variation. Meanwhile, we also discuss the effect of different average grain size (AGS). Furthermore, with the consideration of MGG, we add an oxide charged trap at the interface to induce random telegraph noise (RTN), and consequently cause threshold voltage shift (ΔVth). We find that with the device scaling, the correlation between maximum RTN ΔVth and process variation grows stronger. Besides, the impact of RTN becomes significant enough to compete with the process variation as device shrinks and AGS decreases. In addition, we perform simulations on ΔVth variation due to multiple traps induced by BTI stressing. We analyze the relation between it and trap density under conditions of different device scales and AGS. Through this statistical simulation work, we provide a reference for device designing.
Schnabel, Michael. "Eine Symmetrie der visuellen Welt in der Architektur des visuellen Kortex." Doctoral thesis, 2008. http://hdl.handle.net/11858/00-1735-0000-0006-B4A1-D.
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