báo cáo hóa học: " Application driven, AMC-based cross-layer optimization for video service over LTE" doc
báo cáo hóa học: " Application driven, AMC-based cross-layer optimization for video service over LTE" doc
... Access Application driven, AMC-based cross-layer optimization for video service over LTEYongil Kwon*, Doug Young Suh, Sung Chun Kim and Een Kee HongAbstractIn this paper, we propose a cross-layer ... once every day onaverage.)3. Application- driven AMCWe propose a cross-layer optimization method whereAMC is driven by the application layer, i.e., the video service. In the same two-dimensional ... and viceversa. By using these two kinds of curves, which are pre-pared before service, cross-layer optimization during service is simply used to measure SNR and to determinea maximum PSNR point...
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Báo cáo hóa học: " Research Article Cross-Layer Design for Video Transmission over Wireless Rician Slow-Fading Channels Using an Adaptive Multiresolution Modulation and Coding Scheme" pptx
... interactive video application. For the video streaming applications, the required rate-distortion charac-teristics can be computed and stored in advance. For thereal-time interactive video applications, ... P(2)b) for a 2-layer SNR scalable H.263+coder, for quantization parameters (QPI,QPP,QPEnh) = (2,6,3).Many video applications belong to the video streamingcategory involving prestored video, ... error concealment for video. In Section 3, we briefly describe the channel models usedand provide the performance analysis for the coded anduncoded systems employing nonuniform MPSK over Ricianslow-fading...
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báo cáo hóa học: " Muscle-driven forward dynamic simulations for the study of normal and pathological gait" potx
... accelerationsproduced by muscle forces. During the simulation, accel-erations are produced by forces acting in combination:multiple muscle forces, gravity, and ground reactionforces, for example. To determine ... betweensimulated and measured motions and ground reactionforces, but other choices for the performance criterion canprovide useful information about walking mechanics.Noting that the energetic ... identical except for the for- mulation of the muscle model. The model most resistantto perturbation was a muscle-actuated model whose mus-cles incorporated both the force-length and force-velocityproperties....
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Báo cáo hóa học: " Application of a MANET Testbed for horizontal and vertical scenarios: performance evaluation using delay and jitter metrics" potx
... consider the performance of reactiveprotocols and compare the experimental results with simulation results. Moreover, wewould like to evaluate the performance of our testbed for outdoor scenarios.Figure ... media n value for four different flows(source node ® destination node). For horizontal topology, we notice that there is abetter performance in both delay and jitter metrics, for HM1 scenario.In ... 5(b) isshown the delay results for H M1 scenario. For #1 ® #4 flow and #1 ® #5 flows thereare some oscillations, but the median values show good performance. For HM2 sce-nario, we show results...
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báo cáo hóa học:" An interactive surgical planning tool for acetabular fractures: initial results" doc
... fürInformationstechnik Berlin; Technical Report 1997.20. Fornaro J, Harders M, Keel M, Marincek B, Trentz O, Szekely G,Frauenfelder T: Interactive visuo-haptic surgical planning tool for pelvicand ... needed for building the patient-specific modelsfrom CT datasets, for virtual fracture reduction and fixa-tion as well as the operative time was measured. In allpatients a fo llow-up CT was performed ... file formats. The tool wasdeveloped in-h ouse in the C++ programming language,using OpenGL for graphical and the PHANTOMOmni® Developer Kit (SensAble Technologies, Woburn,MA, USA) for haptic...
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báo cáo hóa học:" Mapping onto Eq-5 D for patients in poor health" docx
... more accurate for mean valuesthan for extremes, may contribute to the problem of over- prediction [2]. Specifying other models may lead to betterpredictions, but will rarely overcome overprediction.Alternatively, ... study exploreswhether the causes of overprediction of utility values for patients in poor health found in the literature caninform a method to minimize that overprediction. Theproposed solution ... algo-rithm for patients in poor heal th, where health status isdetermined using avail able information from a condi-tion-specific non-preference-based measure.There are several causes for the overprediction...
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Báo cáo hóa học: " Catalytic properties of Co3O4 nanoparticles for rechargeable Li/air battery" doc
... exposed plane of the cube-type Co3O4 seemed to be {001}. The villiform-type Co3O4 particles were formed by a nucleus covered with numerous micrometer-sized nanorods. In comparison with ... villiform-type Co3O4. However, the nanorods of the flower-type Co3O4 had a sharper end, smoother surface, and smaller diameter than those of the villiform-type Co3O4. Moreover, ... profile and (b) cyclic performance. Figure 4. SEM images of the air electrodes. Air electrodes composed of Co3O4 nanoparticles, carbon (Ketjen black), and binder before the test and after...
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Báo cáo hóa học: " Research Article Interference Management Schemes for the Shared Relay Concept" docx
... the performance here issimilar to the scheme in [7] where a naive AF protocol wasconsidered. A similar trend holds for the performance in theUL in Figure 5.Recall that the decode and forward ... signals to the relays, forming aninterference channel; and in the second phase, the relaysforward the signals to the base stations, which cooperateto perform joint processing to form a multiple-antennamultiple ... performance versus average relay transmitpower.performance as a function of relay transmit power for theproposed schemes. Increasing the relay transmit power isexpected to improve performance...
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Báo cáo hóa học: " Research Article A Novel Method for Improving Fairness over Multiaccess Channels" pdf
... heterogeneity such that for Δ(I)> 15 dB, SIC is clearly superior to OMA.The beneficial effects of the newly proposed strategy canbe observed for BORG∗K, which performs as well as OMA for small Δ(I), ... not use formula (7.31)from [3] because it was derived for SIC with residual errorspropagated from previous steps.It is clear that, for T∈{2, , K − 1}, we do not needto compute AME for all ... Transactions on InformationTheory, vol. 44, no. 7, pp. 2796–2815, 1998.[11]X.Zhang,J.Chen,S.B.Wicker,andT.Berger,“Successivecoding in multiuser information theory,” IEEE Transactions onInformation...
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Báo cáo hóa học: "Research Article Particle Swarm Optimization for Adaptive Resource Allocation in Communication Networks" pptx
... cross-layer optimizations. The centralized PSO for cross-layer optimization in a single node is divided to three categoriesas shown in Figure 2 for seven layer OSI network model.(1) The optimization ... efficiency and performanceof each layer, the PSO technique has been utilized for singlelayer optimizations [ 3–9]. Recently, PSO has been applied for physical layer optimizations [3, 4]. For example ... optimization is performed using one PSOprocess in a single layer, and the needed data for optimization is provided by one or many other layers.(2) The optimization is performed in multi-PSO...
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