effects of sea surface temperature
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freebsd device drivers [electronic resource] a guide for the intrepid
... Library of Congress Cataloging-in-Publication Data A catalog record of this book is available from the Library of Congress No Starch Press and the No Starch Press logo are registered trademarks of ... trademarks of their respective owners Rather than use a trademark symbol with every occurrence of a trademarked name, we are using the names only in an editorial fashion and to the benefit of the ... intention of infringement of the trademark The information in this book is distributed on an “As Is” basis, without warranty While every precaution has been taken in the preparation of this work,...
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the influence of financial pressure on academic administrators' selection of management and resource allocation strategies
... Reproduced with permission of the copyright owner Further reproduction prohibited without permission Reproduced with permission of the copyright owner Further reproduction prohibited ... without permission Reproduced with permission of the copyright owner Further reproduction prohibited without permission Reproduced with permission of the copyright owner Further reproduction prohibited ... without permission Reproduced with permission of the copyright owner Further reproduction prohibited without permission Reproduced with permission of the copyright owner Further reproduction prohibited...
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Quality of Service and Resource Allocation in WiMAXFig Part 1 pdf
... used as the combination of legacy scheduling algorithms An important aspect of heterogeneous algorithms is the allocation of bandwidth among the traffic classes of WiMAX Some of the algorithms in ... Teixeira and Paulo Roberto Guardieiro Institute of Education, Science and Technology of São Paulo, of Electrical Engineering, Federal University of Uberlândia, Brazil 2Faculty Introduction The ... available bandwidth The rest of the chapter is organized as follows Section presents the features of the WiMAX MAC layer and of the WiMAX scheduling classes The main components of the MAC layer are presented...
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Quality of Service and Resource Allocation in WiMAXFig Part 5 pdf
... the value of α, the greater the number of available subcarriers for each base station and the higher the level of multicell interference There is therefore a tradeoff between the number of available ... severity of the multicell interference This tradeoff is illustrated by Figure Generally speaking, the characterization Fig Tradeoff between interference and number of available subcarriers of the ... Networks 113 ensure some level of fairness among users, one can use the maximization of a weighted sum of users achievable rates as the criterion of optimization of the resource allocation In...
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Quality of Service and Resource Allocation in WiMAXFig Part 6 pot
... analysis of the network in the limit of large number of users The aim of this approach is to obtain optimal values of the resuse factor that no longer depend on the particular configuration of the ... current level of multicell interference The result of each iteration is then used to update the value of multicell interference for the next iteration of the algorithm The convergence of this iterative ... in the framework of several research projects at WiLab The aim of SHINE is to reproduce the behavior of RATs, carefully considering all aspects related to each single layer of the protocol stack...
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Quality of Service and Resource Allocation in WiMAXFig Part 7 doc
... the format of the OFDMA slot is data subcarriers of OFDM symbols The total number of OFDMA slots in a mobile WiMAX frame corresponds to S × Ts where S = Ld and Ts is the number of OFDM symbol ... defined a set of WiMAX system profiles The latter are basically a set of fixed configuration parameters 2.1.2 OFDM, OFDMA and subchannelization The WiMAX PHY layer has also the responsibility of resource ... Multiple Access (OFDMA), which is a multi-users extension of Orthogonal Frequency-Division Multiplexing (OFDM) technique The latter principles consist of a simultaneous transmission of a bit stream...
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Quality of Service and Resource Allocation in WiMAXFig Part 8 ppt
... until the start of the request interval where the backoff of the first attempt is initiated, and its backoff process from the beginning of the first request interval until the beginning of the request ... studying the impact of different parameters on the performance of contention-based services of IEEE 802.16 We evaluate the impact of the number of SSs (N) and the initial backoff window (W) on ... it becomes the head -of- the-line (HOL) packet The REQ service time of this packet is defined as the time duration from the beginning of the request interval where the backoff of the first attempt...
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Quality of Service and Resource Allocation in WiMAXFig Part 9 docx
... is required to satisfy the growing demands of fixed and mobile users, while increasing the profits of the content providers With regard to Quality of Service (QoS) control, the WiMAX system provides ... authentication, require the coordination of a wide range of elements in a networking system The implementation of these features is far beyond the definition] of IEEE 802.16, since this only adds ... service flow characteristics of this connection Fig Overall Architecture of WiMAX QoS 200 Quality of Service and Resource Allocation in WiMAX After the process of classification has been completed,,...
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Quality of Service and Resource Allocation in WiMAXFig Part 10 pdf
... number of OFDM symbols (/OFDMA slots) Therefore achieved transfer rates of a wireless link can vary significantly over short period of time This adds a “second dimension” to the problem of estimating ... where capacity of a link in terms of a maximum throughput / number of calls is considered constant As a consequence, in such an ACM-enabled system, OFDM symbols (or slots for OFDMA) should be ... stage of evaluation of a radio technology to provide results and fundamental knowledge of the behaviour of the air interface Key performance indicators include spectral efficiency, robustness of...
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Quality of Service and Resource Allocation in WiMAXFig Part 11 pot
... applications of the chronic disease type Much research efforts were focused on exploration of reliable and feasible QoS means to support quality-distinctive traffic distribution in the context of versatile ... incapable of suiting real-time video and voice traffic demands on account of no priority provision and lack of service differentiation between various data flows, there is a great deal of research ... One of the key aspects of video distribution over WiMAX is selecting of the right service class which will not be affected by the performance of the physical (PHY) layer For 256 Quality of Service...
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Quality of Service and Resource Allocation in WiMAXFig Part 12 potx
... in terms of reduction of delay, reduction of errors, throughput efficiency, and, in wireless networks, reduction of energy consumption This list by no means exhausts the possible trade-offs that ... support joint operation with it 274 Quality of Service and Resource Allocation in WiMAX One of the drivers of WiMAX’s development is its suitability (because of centralized scheduling using TDD) for ... (MPDUs) Assessment of the results of the adaptive protection scheme is presented in terms of packet drops, data corruption and repair, end-to-end delay introduced, and the dependency of objective video...
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Quality of Service and Resource Allocation in WiMAXFig Part 13 pot
... Mobile WiMAX is based of OFDMA physical layer of the 802.16e-2005 standard, which is a revision of the fixed WiMAX standard IEEE 802.16e provides functionalities such as BS handoffs, MIMO transmit/receive ... 5.8 Physical layer Profile OFDM Table 2.2 Typical RSU parameters b IEEE802.16 video model The video model is one of the main components of our VANET OPNET model as our research focuses on real-time ... thus a great deal of research works have been done focusing on WiMAX (Zhou & Ji, 2010) mesh networks for performance improvement Many of the works concentrated on the construction of routing trees...
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Báo cáo hóa học: " Research Article A Cross-Layer Approach in Sensing and Resource Allocation for Multimedia Transmission over Cognitive UWB Networks" docx
... which is translated into 14 μs of sensing time Figures to demonstrate the performance of OR-rule cooperative sensing in terms of probability of detection and probability of false alarm It can be observed ... sensing time In the case of the set Pd is 90%, for all users and bad SNR condition of −6 dB, a target Q f of about 10% can be achieved by using sample size of 400 The performance of AND-rule fusion ... probability of false alarm (Figure 10) In the case of bad SNR condition of −6 dB, as of OR-rule fusion scheme, more samples are needed, hence longer sensing time, to achieve the target of low P...
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Báo cáo hóa học: "Research Article Achievable Rates and Resource Allocation Strategies for Imperfectly Known Fading Relay Channels" doc
... average power of the source in each block of m symbols Total average power of the relay in each block of m symbols Fraction of total power allocated to training by the source Fraction of total power ... coefficient Estimate of the fading coefficient h· Error in the estimate of the fading coefficient h· Variance of random variables Variance of Gaussian random variables due to thermal noise Number of symbols ... Using similar methods as in the proofs of Theorems and 2, we obtain the following result The proof is omitted to avoid repetition Theorem An achievable rate of nonoverlapped DF with parallel channel...
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Báo cáo hóa học: " Research Article Power and Resource Allocation for Orthogonal Multiple Access Relay Systems" pptx
... Premier’s Research Excellence Award from the Government of Ontario The work of the second author is also supported in part by the Canada Research Chairs program A preliminary version of part of this ... the second argument of the function is the value of PR1 that makes the two arguments of the function in the objective function of (8) equal 3.3 Amplify-and-forward In the case of amplify-and-forward ... for the maximum achievable rate of node i as a function of Pi , the transmission power of node i, PRi , the relay power allocated to node i, and ri , the fraction of the channel resource allocated...
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QUALITY OF SERVICE AND RESOURCE ALLOCATION IN WIMAX docx
... used as the combination of legacy scheduling algorithms An important aspect of heterogeneous algorithms is the allocation of bandwidth among the traffic classes of WiMAX Some of the algorithms in ... present the state of the art of WiMAX scheduling mechanisms Firstly, we we present the features of the WiMAX MAC layer and of the WiMAX scheduling classes The main components of MAC layer are ... of information, rather than PHY layer resources, such as number of sub channels and/or number of OFDM symbols Each SS to BS (uplink) connection is assigned a scheduling service type as part of...
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Finance Comparative Advantage and Resource Allocation
... University of Lausanne; E-Mail: madina.kukenova@unil.ch x University of Lund and University of Michigan - Ann Arbor; E-Mail: mstriebo@umich.edu 1 Introduction One of the most distinguishing features of ... This new line of research usually focuses on the signi…cant heterogeneity of marginal products or rates of returns to production factors within economies Another important aspect of resource misallocation ... focuses on the disciplining impact of product markets Here the variable of interest is the distance of exported product from the comparative advantage of the country of origin (distanceckt0 ) The...
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Báo cáo hóa học: " Resource allocation based on integer programming and game theory in uplink multi-cell cooperative OFDMA systems" ppt
... overheads The proof of the Pareto efficiency of transmitting power strategy, as well as the certification of the identity of NE and the optimal solution, needs to be developed as well Page 10 of 10 W ... The uniqueness of NE The uniqueness of NE demonstrates that each node can reach a converging strategy profile The authors of [11] proposed an approach to prove it As a matter of fact, the uniqueness ... existence of NE, a new approach for the strict mathematical proof of the uniqueness of NE is proposed Simulation results demonstrate that the proposed algorithm successfully combines the merits of centralized...
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Báo cáo hóa học: "Throughput enhancement using synchronization and three-dimensional resource allocation" docx
... the zero-padded prefix in an OFDM symbol time to absorb such timing offset The zero-padded suffix duration of 70.08 ns in a OFDM symbol serves to mitigate the effects of multi-path and give a Figure ... maximum timing offset with ranging is given by drng,max = Dmax c (3) 3.5 Effects of imperfect synchronization Though the timing offset can be mitigated by the ranging capability of WiMedia UWB, ... channel access of asynchronous services Whereas, DRP uses reservation-based TDMA for isochronous i.e strict QoS services 2.2 MB-OFDM MB-OFDM is a combination of frequency hopping and OFDM The frequency...
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báo cáo hóa học:" Research Article Improving the Performance of Bus Platforms by Means of Segmentation and Optimized Resource Allocation" ppt
... pseudocode of Algorithm SB-Local-Exhaustive-Search (omitted) is an obvious modification of Algorithm Algorithms SB-Greedy-Local-Search and SB-LocalExhaustive-Search calculate the goodness of the current ... the quality of this paper The research of the first author has been partially supported by the DOMES Project at the University of Turku (no 8123518, 2008-2010), funded by the Academy of Finland ... device-tosegment allocation algorithm using local search operations The behaviour of proposed algorithms is evaluated with theoretical traffic loads by means of two examples of the deviceto-segment allocation,...
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