the crash of reductionism against the complexity of reality
MULTI - SCALE INTEGRATED ANALYSIS OF AGROECOSYSTEMS - CHAPTER 1 potx
Ngày tải lên :
11/08/2014, 21:21
... for Governance: The Clash of Reductionism Against the Complexity of Reality The Crash of Reductionism against the Complexity of Reality 1.1 Example 1: In a Complex Reality It Is Unavoidable to ... on the relevance of the set of qualities to be monitored Often this simplification of the representation of the reality leads to the adoption of a monocriteria mechanism of representation of the ... CRC Press LLC The Crash of Reductionism against the Complexity of Reality same situation is one of the typical characteristics of complexity, and it is further elaborated in the following section...
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channel adaptive technologies and cross layer designs for wireless systems with multiple antennas
Ngày tải lên :
01/06/2014, 07:54
... 11B: Proof of Theorem 11.2 on Stability Region of Stochastic Physical layer 456 Appendix 11C: Proof of Theorem 11.3 on Throughput Optimality of MW Scheduling 457 Appendix 11D: Proof of Theorem 11.5 ... Performance comparison of OFDMA/MISO and DS-CDMA/MISO for K = 32, Lp = 16, and nT = Mobile transmitter of the OFDMA system Base station receiver of the OFDMA system OFDMA timing offset requirement ... systems, the CSI of the downlink can be estimated on the basis of the uplink pilots In either case, obtaining perfect knowledge of CSI at the transmitter is not feasible, and in practice, there...
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Báo cáo hóa học: " Adaptive selection of antenna grouping and beamforming for MIMO systems" ppt
Ngày tải lên :
20/06/2014, 22:20
... B|+|E|) is the largest, then we use the grouping of (1,3// 2,4) If (|C|+|D|) is the maximum, then we use the grouping of (1,4//2,3) The advantage of this algorithm is that it reduces the search complexity ... ij is the jth element of the set S i We can obtain the beamforming vector of each sub-channel wi as the right singular vector corresponding to the largest singular value of the SVD of Hi The received ... (13), if the amplitude of r13 is large, then it means that the first and the third columns of H are more correlated than the other pairs This can be interpreted as the correlation between the transmit...
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Báo cáo hóa học: " Vector perturbation based adaptive distributed precoding scheme with limited feedback for CoMP systems" docx
Ngày tải lên :
21/06/2014, 03:20
... frame, the adjustment factors of the coordinated BSs are selected from this set as the optimal value of b The statistics of the optimal value of b are given in Figure The horizontal axis is the ... increase the cell-edge user throughput The CoMP user has the CSI of all the BSs and the BSs not have such information The number of transmission antennas on each BS is M, and the number of user ... approximation to the optimal precoding as the channel state varies The rest of the article is organized as follows Section II introduces the system model and Section III is the principle of the ADP The design...
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Báo cáo hóa học: " Research Article Capacity Performance of Adaptive Receive Antenna Subarray Formation for MIMO Systems" pdf
Ngày tải lên :
22/06/2014, 06:20
... (i.e., the jth entry of y) is MR y j = αH y = j a∗ yi , ij (5) i=1 where α j denotes the jth column of A Clearly, the response of the jth subarray y j is a linear combination of the responses of the ... Recognizing that the right-hand side of (B.2) is an approximation of (A.2), that is, the capacity of the RASF system, in the high SNR regime, the validity of the bound in (47) is proven Note that the same ... schemes The same results are verified in Figure 5, where the ergodic capacity of the resulted system over a wide range of SNRs is plotted Figure displays the complementary cdf of the capacity of the...
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Báo cáo hóa học: " Research Article Channel Impulse Response Length and Noise Variance Estimation for OFDM Systems with Adaptive Guard Interval" docx
Ngày tải lên :
22/06/2014, 22:20
... experiments, the final result of the estimated CIR length is the minimum element of the vector L The final estimated noise variance is the average value of all elements of the vector N 3.1 Procedure of the ... consists of a fraction 1/(NK − 1) of a part of channel power excluding the power of the direct path, and the noise variance The selection of the step size determines the accuracy of the estimated ... also the probability that the variance of the last tap is larger than the step size The probability that the last two taps are not detected is the probability that the sum of the variances of the...
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Báo cáo hóa học: " A Reconfigurable Spiral Antenna for Adaptive MIMO Systems" docx
Ngày tải lên :
23/06/2014, 00:20
... either an axial beam—normal to the plane of the spiral—or tilted beam pattern—off-normal to the plane of the spiral [8] The single-arm spiral, which is used in this work, has the advantage of ... number of RFMEMS actuators within the geometrical structure of the antenna to construct a reconfigurable spiral antenna In other words, RF-MEMS actuators are used as part of the physical structure of ... activation of interconnecting actuators, that is, by keeping some of the actuators in the up position (zero bias) while activating the rest of them by applying DC bias voltages, allows the reconfigurable...
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Báo cáo y học: "Networked Research buffering: a basic mechanism for distributed robustness in complex adaptive systems" pptx
Ngày tải lên :
13/08/2014, 16:20
... parameters of the model such as the maximum rate of gene expression, the size of the genetic system, or the level of gene multi-functionality did not alter the basic findings reported here Thus for the ... a period of time, tradeoffs naturally arise in the functions an agent performs in practice These tradeoffs represent one of several causes of trait interdependence and they obscure the process ... around what we call the networked buffering hypothesis (NBH) The central concepts of our hypothesis are described by referring to the abstract depictions of Figure 2; however, the phenomenon itself...
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agent-based model selection framework for complex adaptive systems
Ngày tải lên :
13/11/2014, 11:02
... defined by other agents it interacts with The agents perceive the state of the environment, and then act according to the information they possess They may change either some objects in the environment ... landscape The participant each control a portion of the landscape, and they can see the outcomes of the decisions of other participants After each decision they receive a reward that depends on the ... characteristic of these systems is that the behavior of the whole cannot be understood by simply observing the behavior of individual components, so it seems apparent that modeling of these kinds of systems...
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Dynamic scheduling techniques for adaptive applications on real time embedded systems
Ngày tải lên :
10/09/2015, 15:52
... to the “soft” behaviors of application execution that emphasize on the execution Quality -of- Service (QoS) For instance, the problem of “at which quality level the video could be rendered to the ... linear QoS function Proof Let us suppose, say, task has the largest QoS gradient, and there is a total of n tasks left in the system after the execution of task k, then Theorem 4.1 is equivalent ... they opened my door to the scientific exploration, that they provided timely and valuable advices whenever there are obstacles ahead, and that they enlightened me with their insights of life the...
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Design of adaptive and hybrid energy QOS aware heterogeneous multiprocessor scheduling strategies for embedded systems
Ngày tải lên :
04/10/2015, 15:44
... of a battery in the midst of powering a load The amount of charge that the load actually consumes is given by I · T where I is the current consumption of the load and T is the time duration of ... available at the beginning of the scheduling process The proposed scheduling algorithm utilizes the battery model introduced above to keep track of the states of the batteries in the BSN and to ... tasks towards their deadlines The scaling process starts from the last task and proceeds towards the start of the schedule to endures a decreasing current profile The performance of the algorithm...
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A Study of Channel Estimation for OFDM Systems and System Capacity for MIMO-OFDM Systems
Ngày tải lên :
20/11/2012, 11:28
... Where v is the velocity of the mobile handset, λ is the carrier wave length, θ is the angle between the velocity of the mobile handset in the radial direction of the mobile handset and the base ... is the magnitude of the i-th path and τi is the excess delay of the i-th path, N is the number of resolvable paths As in Fig 2.4, the received signal is a series of pulses and the number of pulses ... duration of the transmitted signal The second is the slow fading channel, referred to the kind of channel when the coherence time of the channel is large relative to the symbol duration of the transmitted...
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Free Software tools for embedded systems
Ngày tải lên :
20/10/2013, 00:15
... Vendors play fair with the GPL and do make their source code available to their users, and most of the time, to the community As long as they distribute the sources to their users, the GPL doesn't require vendors to share their sources with any third party ... For any reuse or distribution, you must make clear to others the license terms of this work Any of these conditions can be waived if you get permission from the copyright holder Your fair use and other rights are in no way affected by the above ... you are still on the host, but you only see the target files Transparent crosscompiling: the crosscompiler looks like a native one Transparent execution: either through remote execution on the target. Or through ...
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techniques for adaptive control - vance vandoren
Ngày tải lên :
12/12/2013, 22:42
... distinguish the effects of the controller from the effects of the process Then there's the problem of noise and disturbances imposing fictitious patterns on the process outputs A load on the process can ... disclaimer is therefore in order: The authors of the following chapters are solely responsible for the accuracy and completeness of their respective claims The editor of this book neither endorses ... Nyquist plot The trajectory makes an infinite number of clockwise encirclements of the origin and none of the À1 point Thus the loop is stable The gain margin is dB (factor of 2) and the phase margin...
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Tài liệu C Programming for Embedded Systems docx
Ngày tải lên :
22/12/2013, 02:17
... previously, hardware is outside the scope of this book We include this hardware information to justify the choices we make in the design of the thermostat The part of choice is the MC68705J1A, for its ... because they add information about the embedded software realm, or they pertain to the sample project specifically 2.1— Product Requirements Often, this document is written from the users' point of ... divided on a microcontroller They may be part of different address spaces Controllers with anything less than the full complement of RAM or ROM (most of them) leave parts of the address space unimplemented...
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