performance evaluation of computer systems pdf

Báo cáo sinh học: " Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems" ppt

Ngày tải lên : 18/06/2014, 22:20

... *Corresponding authors: h Performance evaluation of space–time–frequency spreading for MIMO OFDM–CDMA systems Haysam Dahman ∗ and Yousef Shayan Department of Electrical Engineering, Concordia ... wireless communications systems. An important advantage of using STF- domain spreading in MIMO OFDM–CDMA is that the maximum number of users supported 11 D. Performance Evaluation for Zero Forcing ... This Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Performance evaluation of space-time-frequency...

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Báo cáo toán học: " Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems" pptx

Ngày tải lên : 20/06/2014, 21:20

... number of users. D. Performance Evaluation for Zero Forcing Receiver In this section, we will calculate probability of bit error for Zero-Forcing receiver (ZF) [18,19] to examine the performance of ... 2011:139 http://asp.eurasipjournals.com/content/2011/1/139 Page 12 of 13 RESEARCH Open Access Performance evaluation of space-time-frequency spreading for MIMO OFDM-CDMA systems Haysam Dahman * and Yousef Shayan Abstract In ... for OFDM-CDMA system with 4Tx, 2Rx of the prop osed scheme (solid) and 2D OFDM-C DMA (dotted) in a slow fading frequency-selective environment. S N R dB Number of Users Proposed OFDM-CDMA 2D OFDM-CDMA 0 2 46 8 10...

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báo cáo hóa học:" Research Article A Formal Model for Performance and Energy Evaluation of Embedded Systems" pot

Ngày tải lên : 21/06/2014, 11:20

... 4.5). Finally, the model evaluation is made by means of stochastic simulation (Section 4.3). 4.3. Evaluation. The evaluation is made by means of simulation. The facilites of CPN Tools have been ... using sharpe,” in Proceedings of the 11th Internat ional Conference on Computer Performance Evaluation. Modelling Techniques and Tools, vol. 1786 of Lecture Notes in Computer Science, pp. 345–349, ... contribution of this work was the development of a computational tool to automate same steps of the proposed methodology. The tool was named PECES (Performance and Energy Consumption Evaluation of Embedded...

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báo cáo hóa học:" Research Article Performance Evaluation of UML2-Modeled Embedded Streaming Applications with System-Level Simulation" pdf

Ngày tải lên : 21/06/2014, 20:20

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Báo cáo hóa học: " Research Article Design and Performance Evaluation of an Adaptive Resource Management Framework for Distributed Real-Time and Embedded Systems" pptx

Ngày tải lên : 22/06/2014, 00:20

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Tài liệu HACKING INTO COMPUTER SYSTEMS pdf

Ngày tải lên : 11/12/2013, 15:15

... lines. Thus one of the most treasured prizes of the 80s hacker is a phone number to some mystery computer. Computers of this era might be running any of dozens of arcane operating systems and ... their computers have been attacked.” Besides, of the computer crimes that *are* reported, few are ever solved. SO, ARE HACKERS A BIG CAUSE OF COMPUTER DISASTERS? According to the Computer ... to put computer criminals behind bars. COMPUTER CRIMES: HOW COMMON? HOW OFTEN ARE THEY REPORTED? The FBI’s national Computer Crimes Squad estimates that between 85 and 97 percent of computer...

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Tài liệu Integration and Automation of Manufacturing Systems pdf

Ngày tải lên : 22/12/2013, 20:17

... 64MB of memory, and 2 GB of disk space. On newer computers the performance of the operating system is extremely fast. The list below gives some idea of the capabilities, but complete lists of ... diskless computer with a few MB of memory. On the other end of the spectrum, Linux will run on most high end computer systems. An average user would expect reasonable performance on a computer ... many lower priced computers. By the end of the 1980s most universities were making use of Unix computers in computer science and engineering programs. This created a wealth of graduates who...

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Tài liệu Mechanics of Microelectromechanical Systems pdf

Ngày tải lên : 13/02/2014, 08:20

... book offers a comprehensive coverage to the mechanics of microelectromechanical systems (MEMS), which are analyzed from a mechanical engineer’s viewpoint as devices that transform an input form of energy, ... solid understanding of the principles governing the mechanics of MEMS, and would hopefully enhance the efficiency of modeling and designing reliable and desirably-optimized microsystems. The work represents ... review of the main tools enabling stiffness/compliance characterization of MEMS as it lays the foundation of further developments in this book. Included are basic topics from mechanics of materials...

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Performance Evaluation of Active Suspension for Passenger Cars.Using MATLAB

Ngày tải lên : 16/02/2014, 09:13

... the animation of both the systems along with the graphs of Displacement Vs. time just below the animation window of each of the suspension system. By comparing the performance of the passive ... objectives of this project have been achieved. Dynamic model for linear quarter car suspensions systems has been formulated and derived. Only one type of controller is used to test the systems performance ... [5] Prof. Dr. Yahaya Md. Sam, “Robust Control of Active Suspension System for A Quarter Car Model”, Thesis from University Teknology Malaysia, December 2006. Performance Evaluation of Active...

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Tài liệu COMPARATIVE STUDY ON PERFORMANCE EVALUATION OF MUTUAL FUND SCHEMES OF INDIAN COMPANIES doc

Ngày tải lên : 19/02/2014, 15:20

... [47] COMPARATIVE STUDY ON PERFORMANCE EVALUATION OF MUTUAL FUND SCHEMES OF INDIAN COMPANIES Prof. Kalpesh P Prajapati, Assistant Professor, S.V Institute of Management, Gujarat Technological ... source of data is website of Association of Mutual Funds in India (AMFI). The study period is 1 st January 2007 to 31 st December, 2011. The results of performance measures suggest that most of ... Characteristics & performance evaluation of selected Mutual Funds in India . 9th Indian Institute of Capital Market Conference. [4] Michael, C. J. (1967). The Performance of Mutual Funds in...

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Báo cáo khoa học: "Combining Acoustic and Pragmatic Features to Predict Recognition Performance in Spoken Dialogue Systems" pdf

Ngày tải lên : 08/03/2014, 04:22

... reﬂect proper- ties of individual systems and application scenarios. Acknowledgments We thank Nuance Communications Inc. for the use of their speech recognition and synthesis software and Alexander ... Predict Recognition Performance in Spoken Dialogue Systems Malte Gabsdil Department of Computational Linguistics Saarland University Germany gabsdil@coli.uni-sb.de Oliver Lemon School of Informatics Edinburgh ... distinction between out -of- grammar (WER ≤ 50) and out -of- grammar (WER > 50) in the gold standard for the classiﬁcation of (whole) user utterances. We split the out -of- grammar class into two...

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Báo cáo khoa học: "Comparing Automatic and Human Evaluation of NLG Systems" potx

Ngày tải lên : 24/03/2014, 03:20

... to be popular today. Other, extrinsic, types of human evaluations of NLG systems include measuring the impact of different generated texts on task performance (Young, 1999), measuring how much ... 2005 NIST MT evaluation exercise, used BLEU-4 as the only method of evaluation. BLEU is a precision metric that assesses the quality of a translation in terms of the proportion of its word n- grams ... and Human Evaluation of NLG Systems Anja Belz Natural Language Technology Group CMIS, University of Brighton UK A.S.Belz@brighton.ac.uk Ehud Reiter Dept of Computing Science University of Aberdeen UK ereiter@csd.abdn.ac.uk Abstract We...

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Fundamentals of Computer Design pdf

Ngày tải lên : 24/03/2014, 04:20

... the issue of performance and assessing performance for different types of computing environments in Section 1.5 on page 25). Embedded Computers Embedded computers, the name given to computers ... be driven to opti- mize price -performance. This combination of performance (measured primarily in terms of compute performance and graphics performance) and price of a system is what matters ... of small numbers of off-the-shelf microprocessors. Even high-end supercomputers are being built with collections of microprocessors. Freedom from compatibility with old designs and the use of...

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Báo cáo khoa học: "Validating the web-based evaluation of NLG systems" potx

Ngày tải lên : 31/03/2014, 00:20

... task- based evaluations of NLG systems over the Internet is a valid alternative to more traditional laboratory- based evaluations. Speciﬁcally, we have shown that an Internet-based evaluation of systems ... increased amount of data also makes it possible to compare the quality of NLG systems across different evaluation worlds and users’ language proﬁciency levels. We believe that this type of evaluation ... argue that an evaluation that is based almost exclusively on na- tive speakers in universities leads to overly benign judgments about the quality of NLG systems. One advantage of the Internet-based...

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Báo cáo toán học: " Recursive analytical performance evaluation of broadcast protocols with silencing: application to VANETs EURASIP Journal on Wireless Communications and " pptx

Ngày tải lên : 20/06/2014, 20:20

... average number of reached nodes— it is a sort of approximated indicator of the “depth” of the propagation process. Since the RE can be interpreted as the ratio between the average number of reached ... approach is extensively described, for the evaluation of D, in Appendix 4, but can be directly re-adapted for the evaluation of RE and TE. In the remainder of this subsection, we outline the ﬁnal ... conditions— this is the very idea of IF. The shape of p, as a function of d, is shown in Figure 5, for diﬀerent values of c and ρ s . It can be observed that the PAF of SIF is monotonically increasing...

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Báo cáo hóa học: " Research Article Performance Evaluation of Uplink Delay-Tolerant Packet Service in IEEE 802.16-Based Networks" potx

Ngày tải lên : 21/06/2014, 05:20

... is the sum of the fixed time from the grant time of the tagged i-packet to the start of transmission of the i-packets in the next frame and the transmission times of the random number of i- packets ... statistical behavior of the BS grant buffer of a particular SS is independent from the behavior of those of the other SSs. Therefore, we model the stochastic behavior of the BS grant buffer of a particular ... range of loads. In this case, the optimal value of the total amount of real-time capacities can be determined. In case of a more general QoS requirement (delay con- straint), the optimal set of...