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Dissertations / Theses on the topic 'Allocation block'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Nwamadi, Obilor. "Dynamic physical rersource block allocation for fourth generation wireless communication systems." Thesis, University of Liverpool, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.539566.

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2

Kassim, Shakiru Kehinde. "Closed-loop space-time block coding and resource allocation in collaborative wireless networks." Thesis, Loughborough University, 2009. https://dspace.lboro.ac.uk/2134/34412.

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The focus of this thesis is to exploit closed-loop space–time block coding schemes designed for multiple antenna links composed of four transmit antennas within collaborative wireless networks. Such schemes have the potential to increase the end-to-end bit error rate performance of wireless networks as compared to established schemes which only include links composed of two transmit antennas. The two four transmit antenna closed-loop space–time block codes (STBCs) considered are the closed-loop quasi-orthogonal STBC (CL-QO-STBC) and the closed-loop extended-orthogonal STBC (CL-EO-STBC) schemes

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3

Heikkilä, V. (Valtteri). "A study on dynamic memory allocation mechanisms for small block sizes in real-time embedded systems." Master's thesis, University of Oulu, 2013. http://urn.fi/URN:NBN:fi:oulu-201302081026.

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Embedded real-time and battery-powered systems are increasing in numbers, and their software complexity is growing. This creates a demand for more efficient dynamic memory allocation in real-time embedded systems. Small improvements in dynamic memory allocation can greatly reduce system overall memory usage, fragmentation and energy consumption. Most of today’s general-purpose allocators are unsuitable for real-time embedded systems since they are not designed for real-time constraints. This thesis contains a study on the suitability of dynamic memory allocation mechanisms for small block all

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4

Dosti, E. (Endrit). "Ultra reliable communication via optimum power allocation for repetition and parallel coding in finite block-length." Master's thesis, University of Oulu, 2017. http://jultika.oulu.fi/Record/nbnfioulu-201706082640.

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Abstract. In this thesis we evaluate the performance of several retransmission mechanisms with ultra-reliability constraints. First, we show that achieving a very low packet outage probability by using an open loop setup is a difficult task. Thus, we resort to retransmission schemes as a solution for achieving the required low outage probabilities for ultra reliable communication. We analyze three retransmission protocols, namely Type-1 Automatic Repeat Request (ARQ), Chase Combining Hybrid ARQ (CC-HARQ) and Incremental Redundancy (IR) HARQ. For these protocols, we develop optimal power alloca

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5

Tekbiyik, Ersoy Neyre. "Efficient Resource Allocation In Energy Harvesting Wireless Networks." Phd thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615323/index.pdf.

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This thesis presents various studies on energy efficient design of wireless networks. It starts with a survey on recent shortest path based energy efficient routing algorithms developed for ad hoc and sensor networks, making a comprehensive classification for these algorithms. In addition to energy efficient design, sustainable and environmentally friendly deployment of wireless networks demands increased use of renewable energy. However, this calls for novel design principles to efficiently utilize the variation in the availability of the energy. The thesis continues with an investigation of

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Emenonye, Don-Roberts Ugochukwu. "Application of Machine Learning to Multi Antenna Transmission and Machine Type Resource Allocation." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/99956.

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Wireless communication systems is a well-researched area in electrical engineering that has continually evolved over the past decades. This constant evolution and development have led to well-formulated theoretical baselines in terms of reliability and efficiency. However, most communication baselines are derived by splitting the baseband communications into a series of modular blocks like modulation, coding, channel estimation, and orthogonal frequency modulation. Subsequently, these blocks are independently optimized. Although this has led to a very efficient and reliable process, a theoreti

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7

Huang, Fan. "Allocation des ressources fondée sur la qualité du canal pour la voie descendante des systèmes LTE." Thesis, Université Paris-Saclay (ComUE), 2015. http://www.theses.fr/2015SACLS250/document.

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La recherche effectuée dans cette thèse a pour cadre les réseaux radio privés dédiés aux forces de sécurité civile. En effet, doté actuellement d’un service bande étroite, ils doivent évoluer pour faire face à de nouveaux besoins comme la vidéo ou le multimédia. L’objectif est donc d’adapter la technologie LTE aux contraintes et propriétés de ces réseaux particulier. Ainsi, le nombre d’utilisateurs est limité mais le service doit toujours être disponible et des priorités peuvent être mises en œuvre.Dans ce contexte, l’allocation des ressources de communication est un problème important avec de

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8

Shajaiah, Haya Jamal. "Resource Allocation with Carrier Aggregation for Spectrum Sharing in Cellular Networks." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/70882.

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Recently, there has been a massive growth in the number of mobile users and their traffic. The data traffic volume almost doubles every year. Mobile users are currently running multiple applications that require higher bandwidth which makes users so limited to the service providers' resources. Increasing the utilization of the existing spectrum can significantly improve network capacity, data rates and user experience. Spectrum sharing enables wireless systems to harvest under-utilized swathes of spectrum, which would vastly increase the efficiency of spectrum usage. Making more spectrum avail

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9

Corneli, Marco. "Dynamic stochastic block models, clustering and segmentation in dynamic graphs." Thesis, Paris 1, 2017. http://www.theses.fr/2017PA01E012/document.

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Cette thèse porte sur l’analyse de graphes dynamiques, définis en temps discret ou continu. Nous introduisons une nouvelle extension dynamique du modèle a blocs stochastiques (SBM), appelée dSBM, qui utilise des processus de Poisson non homogènes pour modéliser les interactions parmi les paires de nœuds d’un graphe dynamique. Les fonctions d’intensité des processus ne dépendent que des classes des nœuds comme dans SBM. De plus, ces fonctions d’intensité ont des propriétés de régularité sur des intervalles temporels qui sont à estimer, et à l’intérieur desquels les processus de Poisson redevien

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Vural, Mehmet. "Achievable Coding Rates For Awgn And Block Fading Channels In The Finite Blocklength Regime." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612348/index.pdf.

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In practice, a communication system works with finite blocklength codes because of the delay constraints and the information-theoretic bounds which are proposed for finite blocklength systems can be exploited to determine the performance of a designed system. In this thesis, achievable rates for given average error probabilities are considered for finite blocklength systems. Although classical bounds can be used to upper bound the error probability, these bounds require the optimization of auxiliary variables. In this work, a bound which is called the dependence testing (DT) bound that is free

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11

Carroll, Ritchie Graham. "No Child Left Behind: Is it About Time? Elementary Scheduling Practices in the Commonwealth of Virginia Since the Authorization of NCLB." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/27731.

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Time, the one educational resource educators desire most, is so often in short supply in America 's schools. The ability of the school administrator to schedule teachers' and students' time so that both groups can maximize opportunities for teaching and learning each day has become an essential skill. Changing the structure of the school day to extend learning opportunities requires that administrators, teachers, and students have a firm commitment and clear understanding of the educational resources and processes of time. Successful practices regarding the use of time include: (a) careful pla

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12

Abdelalim, Kaoutar. "Study and optimisation of IEEE 802.11 PHY and MAC protocols towards a new generation integrated in 5G." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2019. http://www.theses.fr/2019IMTA0163.

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L’évolution des réseaux sans fil et leur utilisation massive soulève de plus en plus de défis. Cela est particulièrement vrai pour les environnements denses pour lesquels la performance par utilisateur est un problème clé. Le standard IEEE 802.11ax a été lancé dans ce contexte, afin d’améliorer les protocoles des couches PHY(Physical) et MAC (Medium Access Control) en maintenant la rétrocompatibilité avec les standards précédents. Les travaux de cette thèse rejoignent les mêmes perspectives que le IEEE 802.11ax, à savoir l’amélioration des protocoles existants ou l’introduction de nouvelles te

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Rajman, Jakub. "Systém souborů s velkými bloky." Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237226.

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Master's thesis treats of implementation of big block file system for FreeBSD operating system. The introduction of this document is dedicated to theoretically analysis, which is oriented on history, sense and usage of file systems. Next chapter describes the architecture of UFS/FFS file system. Implementation part starts with introducing design of new file system, which was isnpired by MSDOSFS file system. Last part of this thesis presents implementation of file system with great emphasis on problems, which can happen during programming.

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14

Bischof, Sven. "Anwendung des Black-Litterman Modells in der Asset Allocation." St. Gallen, 2009. http://www.biblio.unisg.ch/org/biblio/edoc.nsf/wwwDisplayIdentifier/01648708002/$FILE/01648708002.pdf.

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15

Mbofana, Stewart. "Alternative distributions in the Black-Litterman model of asset allocation." Master's thesis, University of Cape Town, 2011. http://hdl.handle.net/11427/13426.

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Includes bibliographical references.<br>In this thesis we replace the normal distribution assumption in the calculation of the prior equilibrium returns used in the model with a more general distribution which captures the skewness and fat tails exhibited by stock data. We consider the á stable distributions as an alternative distribution to the normal distribution. Consequently we also consider alternative measures of risk, the Value at Risk and the Conditional Value at Risk other than the variance used in the normal case.

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16

Abdumuminov, Shuhrat, and David Emanuel Esteky. "Black-Litterman Model: Practical Asset Allocation Model Beyond Traditional Mean-Variance." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-32427.

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This paper consolidates and compares the applicability and practicality of Black-Litterman model versus traditional Markowitz Mean-Variance model. Although well-known model such as Mean-Variance is academically sound and popular, it is rarely used among asset managers due to its deficiencies. To put the discussion into context we shed light on the improvement made by Fisher Black and Robert Litterman by putting the performance and practicality of both Black- Litterman and Markowitz Mean-Variance models into test. We will illustrate detailed mathematical derivations of how the models are constr

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17

Bylund, Åberg Emil, and Johannes Fåhraeus. "Strategy Analysis and Portfolio Allocation : A study using scenario simulation and allocation theories to investigate risk and return." Thesis, Umeå universitet, Institutionen för matematik och matematisk statistik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-172007.

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Portfolio allocation theories have been studied and used ever since the mid 20th century. Nevertheless, many investors still rely on personal expertise and information gathered from the market when building their investment portfolios. The purpose of this master’s thesis is to examine how personal preferences and expertise perform compared to mathematical portfolio alloca- tion theories and how the risk between these di↵erent strategies di↵er. Using two portfolio allocation theories, the Black-Litterman model and mod- ern portfolio theory (Markowitz), a portfolio managed by the investment firm

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18

Hosking, Stephen Gerald. "An economic analysis of government expenditure allocations to black schooling in South Africa." Thesis, Rhodes University, 1991. http://hdl.handle.net/10962/d1001451.

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In this thesis an assessment is made of the contribution of economic theory to the debate on government expenditure allocations to schooling in developing countries. Publicly provided Black schooling in South Africa is taken as the case study and viewed in the light of historical perspectives, as well as human capital, rent-seeking, welfare, liberal and contractarian theory. From an historical perspective, the willingness of Blacks to enrol at schools under National Party control, despite the poor quality of such schooling and lack of labour market incentives for them to do so, is paradoxical.

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19

Hirani, Shyam, and Jonas Wallström. "The Black-Litterman Asset Allocation Model : An Empirical Comparison to the Classical Mean-Variance Framework." Thesis, Linköpings universitet, Nationalekonomi, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111570.

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Within the scope of this thesis, the Black-Litterman Asset Allocation Model (as presented in He & Litterman, 1999) is compared to the classical mean-variance framework by simulating past performance of portfolios constructed by both models using identical input data. A quantitative investment strategy which favours stocks with high dividend yield rates is used to generate private views about the expected excess returns for a fraction of the stocks included in the sample. By comparing the ex-post risk-return characteristics of the portfolios and performing ample sensitivity analysis with re

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20

Zankl, Stephan. "Real Estate Asset Allocation auf Basis des Black-Litterman-Ansatzes : ein Modell zur gleichgewichtsorientierten Portfoliodiversifikation an zyklischen Immobilienmärkten /." kostenfrei, 2009. http://www.opus-bayern.de/uni-passau/volltexte/2009/1663/.

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21

Sy, Mikaïlou. "Seed-source variation in carbon allocation and carbon isotope discrimination in juvenile black spruce, Picea mariana (Mill.) B.S.P." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ37078.pdf.

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22

Zweig, Patricia. "The Lagunya Lacuna : contestations of legitimacy and agency in housing allocation in a Black Local Authority, 1983-1994." Master's thesis, University of Cape Town, 2005. http://hdl.handle.net/11427/4822.

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Word processed copy.<br>Includes bibliographical references (leaves 159-175).<br>In this thesis I draw on experiences in a particular neighbourhood within the Lagunya townships, New Crossroads, in order to examine the realities of local government housing administration at the local scale. The New Crossroads housing allocation process illustrates the insider/outsider polemic and the ways in which complex interrelationships developed between the local authorities and the community leadership structures, between the New Crossroads community and the residents of townships surrounding them, and am

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23

Headley, Jamila A. "Opening the black box : the politics of allocating public resources for health in Barbados." Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:216717df-4f7a-4e8d-a219-27560ff245e5.

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Within the field of public health, there has been increasing interest in the factors that influence national priorities in health in low- and middle-income countries (LMICs), where resources are often particularly scarce and decision-making processes are often ad- hoc. Understanding how priorities are set in these countries necessitates a look at the process concealed in the black box that transforms policy inputs into outputs. However, rigorous health policy analysis of macro-level priority setting in LMICs is rare. Using a case study approach, this thesis explores the drivers of priority for

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24

Andregård, Victor, and Christopher Pezoa. "Black-Littermans allokeringsmodell : En empirisk studie av prognosvariansen och dess betydelse för portföljprestationen." Thesis, Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-130814.

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Black-Litterman är en allokeringsmodell som gör det möjligt att förena historiska avkastningar med personliga övertygelser om framtida avkastningar från en enskild investerare. Denna studie jämför två kvantitativa metoder i framtagande av felskattningen för framtida prognoser i syfte att kunna minska Black-Littermans subjektivitet. Tidigare litteratur har testat dessa metoder enskilt men aldrig ställt dem mot varandra. De metoder som undersöks använder varianser proportionella mot varianser i marknadsjämvikten, samt varianser från residualer i en faktormodel. Resultatet visar att tillämpandet

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Mankert, Charlotta. "The Black-Litterman Model : Towards its use in practice." Doctoral thesis, KTH, Ekonomistyrning, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-26798.

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The Black-Litterman model is analyzed in three steps seeking to investigate, develop and test the B-L model in an applied perspective. The first step mathematically derives the Black-Litterman model from a sampling theory approach generating a new interpretation of the model and an interpretable formula for the parameter weight-on-views. The second step draws upon behavioural finance and partly explains why managers find B-L portfolios intuitively accurate and also comments on the risk that overconfident managers state too low levels-of-unconfidence. The third step, a case study, concerns the

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Sivatki, Ghennadii. "Synthesis-driven Derivation of Process Graphs from Functional Blocks for Time-Triggered Embedded Systems." Thesis, Linköping University, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5106.

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<p>Embedded computer systems are used as control systems in many products, such as VCRs, digital cameras, washing machines, automobiles, airplanes, etc. As the complexity of embedded applications grows and time-to-market of the products they are used in reduces, designing reliable systems satisfying multiple require-ments is a great challenge. Successful design, nowadays, cannot be performed without good design tools based on powerful design methodologies. These tools should explore different design alternatives to find the best one and do that at high abstraction levels to manage the complexi

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Ammar, Moussa. "Optimisation d'un schéma de codage d'image à base d'une TCD : application à un codeur JPEG pour l'enregistrement numérique à bas débit." Paris, ENST, 2002. https://pastel.archives-ouvertes.fr/tel-00005739.

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Nous considérons dans cette thèse le problème d'otpimisation d'un schéma de codage/décodage JPEG et le post-traitement de réduction des effets de blocs dans les images codées par JPEG. Nous proposons tout d'abord le filtrage de Wiener comme optimisation du banc de filtres de synthèse pour une distorsion minimale et nous cherchons par la suite une quantifcation optimisée. L'algorithme itératif A1 réalise une optimisation conjointe des quantificateurs et du banc de filtres de synthèse. Les résultats experimentaux sur quelques images montrent que le gain total en terme de PSNR peut atteindre 1,36

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28

Trollsten, Viktor, and Sebastian Olsson. "The Black Litterman Asset Allocation Model : An empirical comparison of approaches for estimating the subjective view vector and implications for risk-return characteristics." Thesis, Linköpings universitet, Nationalekonomi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-151853.

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Background In the early 90’s, Black and Litterman extended the pioneering work of Markowitz by developing a model combining qualitative and quantitative research in a delicate optimization process. It allows for a subjective view parameter in a quantitative model and with absent views, the investor will have no reason to deviate from the market equilibrium portfolio. As one can imagine, the investors’ views incorporated in the Black-Litterman model is crucial and is the unique advantage or problem of the model, depending on the user’s ability to properly forecast expected return. However, it h

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Ghorbanzadeh, Mohammad. "Resource Allocation and End-to-End Quality of Service for Cellular Communications Systems in Congested and Contested Environments." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/64390.

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This research addresses the concept of radio resource allocation for cellular communications systems operating in congested and contested environments with an emphasis on end-to-end quality of service (QoS). The radio resource allocation is cast under a proportional fairness formulation which translates to a convex optimization problem. Moreover, the resource allocation scheme considers subscription-based and traffic differentiation in order to meet the QoS requirements of the applications running on the user equipment in the system. The devised resource allocation scheme is realized through a

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Collins, Kevin Tyrone. "A case study analysis of African American participation in the initial allocation of tobacco master settlement agreement funds to black communitites in Arkansas and Georgia." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2009. http://digitalcommons.auctr.edu/dissertations/215.

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Since the beginning of the 1990s, there has been a sharp rise in anti-tobacco activism, adverse public opinion, litigation, and new legislation to counter the tobacco industry and reduce use. Despite this sharp rise in activism, the role of African Americans in this advocacy process has mostly escaped the analysis of the political science research community. This includes 1999 when payments to the states began from the historically significant Master Settlement Agreement (MSA), which was signed in 1998 between 46 Attorneys General and the tobacco industry. This research project analyzed the dy

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Lobarinhas, Roberto Beier. "Modelos black-litterman e GARCH ortogonal para uma carteira de títulos do tesouro nacional." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/45/45133/tde-17092012-145914/.

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Uma grande dificuldade da gestão financeira é conseguir associar métodos quantitativos às formas tradicionais de gestão, em um único arranjo. O estilo tradicional de gestão tende a não crer, na devida medida, que métodos quantitativos sejam capazes de captar toda sua visão e experiência, ao passo que analistas quantitativos tendem a subestimar a importância do enfoque tradicional, gerando flagrante desarmonia e ineficiência na análise de risco. Um modelo que se propõe a diminuir a distância entre essas visões é o modelo Black-Litterman. Mais especificamente, propõe-se a diminuir os problemas e

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Khalgui, Mohamed. "Validation temporelle et déploiement d'une application de contrôle industrielle à base de composants." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL009N/document.

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Dans cette thèse, nous nous intéressons à la validation temporelle ainsi qu'au déploiement d'applications de contrôle industriel à base de composants. La technologie des composants retenue est celle des Blocs Fonctionnels définie dans la norme industrielle IEC 61499. Un Bloc Fonctionnel est défini comme un composant réactif supportant des fonctionnalités d'une application. L'avantage de cette norme, connue dans l'industrie, est la description statique de l'application ainsi que de son support d'exécution. Une première contribution de la thèse est l'interprétation des différents concepts défini

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Williams, Sandra Elizabeth. "Bureaucracy, law and power - water allocation for productive use: Policy and implementation, a case study of black emerging farmers in the Breede Gour i t z Water Management Area in theWestern Cape,South Africa, 2005-2017." University of the Western Cape, 2019. http://hdl.handle.net/11394/7394.

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Philosophiae Doctor - PhD<br>This study examines the problems of implementing water allocation policy in the context of the local state bureaucracy as well as the specific experiences of local black emerging farmers in the Breede Gouritz Water Management Area. This study used qualitative research methods and is based on many hours of interviews and observing bureaucrats and stakeholders at the receiving end of the bureaucratic business process of water allocation. It is not only concerned with the physical and technical aspects of access but explores how the different role players interac

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Unal, Serter Ziya. "An Optimizing Approach For Highway Safety Improvement Programs." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12604974/index.pdf.

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Improvements to highway safety have become a high priority for highway authorities due to increasing public awareness and concern of the high social and economic costs of accidents. However, satisfying this priority in an environment of limited budgets is difficult. It is therefore important to ensure that the funding available for highway safety improvements is efficiently utilized. In attempt to maximize the overall highway safety benefits, highway professionals usually invoke an optimization process. The objective of this thesis study is to develop a model for the selection of appropriate

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Bassomo, Pierre. "Contribution à la parallélisation de méthodes numériques à matrices creuses skyline. Application à un module de calcul de modes et fréquences propres de Systus." Phd thesis, Ecole Nationale Supérieure des Mines de Saint-Etienne, 1999. http://tel.archives-ouvertes.fr/tel-00822654.

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L'augmentation continue de la puissance des ordinateurs personnels (stations de travail ou PCs) et l'émergence de réseaux à haut débits fournissent de nouvelle opportunités de réalisation de machines parallèle à faible coût, en comparaison des machines parallèles traditionnelles. On peut aujourd 'hui construire de véritables machines parallèles en interconnectant des processeurs standards. Le fonctionnement de cet ensemble de processeurs en tant que machines parallèle est alors assuré par des logiciels tels que PVM et MPI. Quelle que soit la machine parallèle considérée, concevoir des applicat

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Dalcastagnè, Manuel. "Noise and Hotel Revenue Management in Simulation-based Optimization." Doctoral thesis, Università degli studi di Trento, 2021. http://hdl.handle.net/11572/319438.

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Several exact and approximate dynamic programming formulations have already been proposed to solve hotel revenue management (RM) problems. To obtain tractable solutions, these methods are often bound by simplifying assumptions which prevent their application on large and dynamic complex systems. This dissertation introduces HotelSimu, a flexible simulation-based optimization approach for hotel RM, and investigates possible approaches to increase the efficiency of black-box optimization methods in the presence of noise. In fact, HotelSimu employs black-box optimization and stochastic simulatio

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AMMAR, Moussa. "Optimisation d'un schéma de codage d'image à base d'une TCD. Application à un codeur JPEG pour l'enregistrement numérique à bas débit." Phd thesis, Télécom ParisTech, 2002. http://tel.archives-ouvertes.fr/tel-00005739.

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Nous considérons dans cette thèse le problème dotpimisation dun schéma de codage/décodage JPEG et le post-traitement de réduction des effets de blocs dans les images codées par JPEG.<br />Nous proposons tout dabord le filtrage de Wiener comme optimisation du banc de filtres de synthèse pour une distorsion minimale et nous cherchons par la suite une quantifcation optimisée. Lalgorithme itératif A1 réalise une optimisation conjointe des quantificateurs et du banc de filtres de synthèse. Les résultats experimentaux sur quelques images montrent que le gain total en terme de PSNR peut atteindre 1,3

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Martins, Diego de Carvalho. "Otimização de carteiras regularizadas empregando informações de grupos de ativos para o mercado brasileiro." reponame:Repositório Institucional do FGV, 2015. http://hdl.handle.net/10438/13485.

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Chung-Hao, Chuang. "Block Allocation Algorithms for FLASH File Systems." 2006. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2806200611520100.

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Chuang, Chung-Hao, and 莊中豪. "Block Allocation Algorithms for FLASH File Systems." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/89601659382355827893.

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碩士<br>國立臺灣大學<br>資訊工程學研究所<br>94<br>Embedded systems have been developing rapidly in recent years, and flash memory technology has become a major part of embedded systems because of its shock-resistance, low power consumption, and non-volatile nature. Since flash memory has write-once and bulk-erase properties, an intelligent allocation algorithm is essential to providing applications efficient storage service. In this paper, we first demonstrate that the online version of FLASH allocation problem is difficult, since we can find an adversary that makes every online algorithm to use as many numbe

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Hu, Heng-Ming, and 胡恆鳴. "Adaptive Block Resource Allocation Algorithms in OFDMA Downlink Systems." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/jrr8fw.

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碩士<br>國立臺北科技大學<br>電機工程系研究所<br>101<br>This thesis mainly researches into the adaptive block resource allocation algorithms in OFDMA downlink systems. Traditional adaptive resource allocation algorithms use the subcarrier as the basic resource allocation unit. But the recent OFDMA systems such as WiMAX and LTE divide subcarriers into several blocks and use the block as the basic resource allocation unit to reduce the system’s complexity. Therefore, this thesis aims to modify traditional proportional rate constraint adaptive resource allocation algorithms such as Shen’s, Wong’s, and Huang’s algor

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Wang, Jason, and 王禎毅. "Adaptive Power Allocation for 2 × n Space-Time Block Coding." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/59735888607332561354.

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碩士<br>國立臺灣大學<br>電機工程學研究所<br>96<br>In this paper, we explore the application of adaptive power allocation to 2 × nr space-time block code (STBC) systems, where nr specifies an arbitrary number of antennas at the receiver. We demonstrated how a fixed amount of transmit power allocated among the transmit antennas in different quantities can result in an improved bit error rate (BER) performance. Using a feed-back link between the transmitter and receiver, adaptive power allocation can also be used to improve the system capacity or minimize the transmit power of a system while satisfying a thresho

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Wang, Jason. "Adaptive Power Allocation for 2 * n Space-Time Block Coding." 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2807200800211700.

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Ding, Jen-Wen, and 丁建文. "An efficient block allocation strategy for variable bit rate continuous media data." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/97132284137730468098.

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碩士<br>國立成功大學<br>工程科學系<br>86<br>The advances in storage, computing, and communication technologiesin the past decade have made it feasible to provide on-line accessto a variety of information resources (such as newspaper, image,video clips, audio, etc.) over high speed networks. One of thefundamental technologies to construct such an information retrievalsystem is continuous media (CM) servers, which provide continuousmedia data for clients. The main design goal of a CM server is toimprove t

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Fan, Sheng-Po, and 范盛博. "Power Allocation for Minimum BER in Quasi-Orthogonal Space-Time Block Coded Systems." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/56520837139961863219.

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碩士<br>國立交通大學<br>電信工程系所<br>94<br>It is well known that transmit diversity is a popular technique in modern wireless communication. In this thesis, we focus on one of quasi-orthogonal space-time block codes with full rate (the so-called ABBA code). By exploiting a distinctive channel matrix structure induced by the ABBA code, we derive an explicit formula of the associated QR-decomposition. We propose a minimal BER power allocation scheme for the ABBA code over i.i.d. Rayleigh fading channels under the QR-based successive detection framework. Under a fixed channel realization, we propose optimal

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LI, CHIN, and 李晉. "Reception Cycle-aware Resource Block Allocation for Real Time Video Traffic in 3GPP LTE System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/02509369351718706547.

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碩士<br>國立中正大學<br>通訊工程研究所<br>101<br>Discontinuous reception (DRX) in Long-Term Evolution reduces power consumption of users’ equipment (UE) by periodically turning on and off the radio reception module. As the module falls asleep, packets from base stations are deferred and even useless due to exceeding delay bounds in real time applications such as video streaming. Current resource allocators only skip transmission opportunities of those sleeping UEs, rather than consider their reception cycle and traffic delay bounds. This study proposes a mechanism of resource block allocation called Receptio

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Huang, Wun-Han, and 黃文涵. "Iterative Resource Allocation Schemes for Multiuser Space Frequency Block Coded OFDMA System with CoMP Transmission." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/59007974750116809252.

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碩士<br>國立中央大學<br>通訊工程學系<br>101<br>Coordination among multiple enhanced base stations referred to as coordinated multi-point (CoMP) transmission/reception is addressed to enhance the capacity of user equipments that are located at the cell edge. The CoMP technique is to change the interference from adjacent enhanced base stations into the coordinated signal so as to improve the received signal. In this thesis, a resource allocation problem to maximize the system throughput for multiuser space frequency block (SFBC) coded OFDMA systems with CoMP transmission is first studied. The beamforming tech

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Li, Chih-Ho, and 李致和. "The impact of increasing block pricing on income allocation and fairness of residential electronic power." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/93762719230422233068.

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碩士<br>淡江大學<br>產業經濟學系碩士班<br>103<br>This paper discusses the impact of increasing block pricing on income allocation and fairness of residential electronic power. This analysis has been performed by using the Family Income and Expenditure data in Taiwan for 2011 to 2013. First, I study the effect of estimates household electricity consumption, electricity expenditure, the share of electricity expenditure and the subsidy under the increasing-block pricing. Second, I study the fairness of different aliquots family of tariff burden ladder under increasing block pricing in the summer months and the

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Huang, Chia-Hsin, and 黃佳心. "ARQ block size and transmission window size based downlink proportional fair resource allocation in IEEE 802.16e." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/69757551348450116358.

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碩士<br>國立交通大學<br>電信工程研究所<br>99<br>Because of the rapidly growing demand of high quality service over wireless networks, broadband wireless access becomes so important. Since the bandwidth is very precious, the resource should be allocated properly to satisfy the users' demand and keep it fair at the same time. The existing algorithm for proportional fairness is a resource allocation scheme to find a balance between system efficiency and fairness among users. In IEEE 802.16e, the automatic repeat request (ARQ) scheme is used to retransmit data received with error in the media access control (MAC

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Ho, Wei-Chan, and 何維展. "Performance Evaluation of Coordinated Scheduling Based Downlink Resource Block Allocation in LTE-A Macro/RRH Network." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/c9ttps.

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碩士<br>國立中正大學<br>通訊工程研究所<br>102<br>CoMP Scenario 3 is different from the eNB and HeNB in the conventional hybrid network. Rather than connect each eNB with air-interface X2, gigabit optical fibers is adopted in CoMP Scenario 3. In addition, CoMP Scenario 3 use RRH as HeNB. RRH is only equipped with a transceiver which converts RF to and from digital IF signals. BBU in eNB process radio resource and network management functionalities. However, the more base stations deployed in hybrid network, the greater the Co-Channel Interference would be. Co-Channel Interference would not only lower UE’s SIN

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