evaluation analysis and improving and sustaining performance

Design, analysis, and performance evaluation for handshaking based MAC protocols in underwater acoustic networks

... DESIGN, ANALYSIS, AND PERFORMANCE EVALUATION FOR HANDSHAKING BASED MAC PROTOCOLS IN UNDERWATER ACOUSTIC NETWORKS NG HAI HENG ... speed and low bit rate-distance product present new challenges to Medium Access Control (MAC) protocol design In this dissertation, we focus on the design, evaluation, and analysis of handshaking-based ... impact on the network performance such as throughput, delay, energy consumption, etc In this dissertation, we focus on the protocol design, performance evaluations and theoretical analysis on one popular...

Improving visual search performance in augmented reality environments using a subtle cueing approach experimental methods, apparatus development and evaluation

Danh mục: Cao đẳng - Đại học

... Variables and Parameters .68 7.3.3 Common Experiment Protocol 69 7.3.3.1 Experiment VS3 Stimuli and Protocols 71 7.3.3.2 Experiment VS4 Stimuli and Protocols 71 7.3.4 Results and ... especially in application areas such as assembly and construction, maintenance and inspection, navigation and pathfinding, as well as tourism and entertainment (Wither, DiVerdi, & Höllerer, 2009) ... guidelines, adopting UI design guidelines and establishing standards, as well as coupling user-based studies with expert evaluation While all this appears logical and sound on the surface, a closer...

Analysis and performance of high efficiency synchronous reluctance machines

Danh mục: Môi trường

... Lawrenson, P.J and Agu, L.A Theory and Performance of Polyphase Reluctance Machines Proc IEE, 111(8), pp 1435-1445, 1964 [2] Lawrenson, P.J and Gupta, S.K Developments in the Performance and Theory ... A.J.O., and Menzies, R.W and Anderson, A.F Theory and Performance of Reluctance Motors With Axially Laminated Anisotropic Rotors Proc IEE, 118(7), pp 887-894, 1971 [4] Cruickshank, A.I.O and Menzies, ... laminated or a combination of both It has been due to obvious advantages in performance and commercial manufacturing Analysis and performance The principle of operation of reluctance synchronous machines...

QUASILINEAR CONTROL: Performance Analysis and Design of Feedback Systems with Nonlinear Sensors and Actuators pot

Danh mục: Cơ khí - Chế tạo máy

... P(s) and C(s) represent the plant and controller, respectively, and the nonlinear functions f (·) and g(·) describe, respectively, the actuator and sensor The signals r, d, e, u, v, y, and ym ... linearization, and actual system performance For this LPNI system, we construct its Jacobian and stochastic linearizations and 2 calculate the variances, σy and σy , of the outputs y(t) and y(t) as ... coloring ﬁlter with the 3dB bandwidth r , the plant, and the controller, respectively, f (u) is the actuator nonlinearity, and wr and r are standard white noise and the reference signal Since,...

Báo cáo hóa học: "An analysis on equal width quantization and linearly separable subcode encoding-based discretization and its performance resemblances" ppt

Danh mục: Hóa học - Dầu khí

... for (I) PCA and (II) ERE experiments: (a) EER and ROC performances of EW + DBR, EW + BRGC and EW + LSSC discretizations; and the rescaled L1 distance-based classification; and (b) the performance ... for (I) PCA and (II) ERE experiments: (a) EER and ROC performances of EW + DBR, EW + BRGC and EW + LSSC discretizations; and the rescaled L1 distance-based classification; and (b) the performance ... evaluation 4.1 Data sets and experiment settings To evaluate the discretization performance of the three discretization schemes (EW + DBR, EW + BRGC and EW + LSSC) and to justify the performance resemblances...

Báo cáo hóa học: "Research Article Broadcast Reserved Opportunity Assisted Diversity Relaying Scheme and Its Performance Evaluation" potx

Danh mục: Hóa học - Dầu khí

... transmit and receive simultaneously Let r and t denote the received and the transmitted signals, respectively, and let n denote the additive white Gaussian noise (AWGN) with zero mean and variance ... and our BROAD scheme is proposed The system performance is analyzed and the feasibility of achieving multiuser diversity is discussed in Section In Section 5, we give the simulation results and ... and the DN, the BS and the potential RN, or the potential RN and the DN h is modeled by taking into account three eﬀects [12]: the shadowing eﬀects s, the attenuation due to the distance d, and...

Báo cáo hóa học: " Research Article Design, Analysis, and Performance of a Noise Modulated Covert Communications System" ppt

Danh mục: Hóa học - Dầu khí

... the bandwidth of m(t) is very small compared with H(t) We assume that the signal bandwidth of V (t) and H(t) (hence the bandwidth of V (t) and H(t)) is BS , and that the bandwidth of nV (t) and ... term) and a zero-mean band-limited Gaussian with the same power and frequency range is shown in Figure In the simulation, the bandwidth of bandpass ﬁlter is 40 MHz (BL = 20 MHz), the bandwidth ... results in (25), and the results are shown in Figures and In the simulation, both the SNRV and the SNRH terms are equal, and the bandwidth of the antenna is 10 MHz wider than the bandwidth of the...

Báo cáo hóa học: " Research Article Modelling and Comparative Performance Analysis of a Time-Reversed UWB System" doc

Danh mục: Báo cáo khoa học

... into UWB and TR-UWB communications, Section covers various signal degradations and error performance analysis, Section overviews a UWB and TR-UWB simulation, together with a comparative analysis ... with Ns = and 10 Results are illustrated in Figures 10 and 11 The plots indicate the maximum, minimum, and average BER rates over all users for both All-RAKE and TR-UWB simulations, and also the ... 0–4 m separation between all transmit and receive pairs 3.1 Z ≥ 0, Z < 0, g(t) = w(t) − w(t − ε) (16) (17) ERROR PERFORMANCE ANALYSIS Time-hopping code analysis With all users assumed to be transmitting...

Báo cáo hóa học: " IEEE 802.11 Wireless LANs: Performance Analysis and Protocol Reﬁnement" pot

Danh mục: Báo cáo khoa học

... successfully received and the channel is idle terarrival time, and the throughput eﬃciency OPNET simulation results validate the accuracy of our performance analysis Moreover, a performance comparison ... PERFORMANCE ANALYSIS Our performance analysis, as already shown in the previous section, includes the eﬀect of packet retry limits and The full proof as well as additional details for the derived analysis ... for the other two considered performance metrics: packet drop time and drop probability TUNING OF PROTOCOL PARAMETERS AND PERFORMANCE RESULTS There are a variety of performance requirements according...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 2 pptx

Danh mục: Ngân hàng - Tín dụng

... 2003; Kat and Miffre 2002; Kazemi and Schneeweis 2003) and/ or models including nonlinear risk factors (see Agarwal and Naïk 2004; Fung and Hsieh 1997a, 2002b, 2003; Schneeweis, Spurgin, and Georgiev ... −13.49 4cf Favre and Galeano (2002b) for more details on the Modified VaR and its application to hedge funds 23 Benchmarking the Performance of CTAs percent for the S&P 500 and −3.31 percent ... second- to third- and fourth-order moments Our analysis suggests that it is not the case with CTAs To account for the presence of extreme risks in the evaluation of riskadjusted performance, we...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 3 docx

Danh mục: Ngân hàng - Tín dụng

... There is no strong difference in performance persistence among CTAs, public funds, and private funds PERFORMANCE PERSISTENCE AND CTA CHARACTERISTICS Because some performance persistence was found, ... listed as both short and medium term, the observation was classed as short term If both medium and long term or all 41 Performance of Managed Futures TABLE 3.7 Mean and Standard Deviation of CTA ... fund in period one and period two, and then ranked The funds were divided into groups consist- 36 PERFORMANCE ing of the top-third mean returns, middle-third mean returns, and bottomthird mean...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 4 ppsx

Danh mục: Ngân hàng - Tín dụng

... including a bull and a bear market period Further, we report the methodology used to analyze CTA performance and performance persistence before reporting the results of the performance analysis in ... persistence analysis and analyzes the exposure of the deciles constructed on previous year’s performance to the individual strategies Then we report the complete analysis of monthly and yearly ... in performance Sirri and Tufano (1998) and Zheng (1999) stressed the importance of persistence analysis in mutual funds They document large inflows of money into last year’s best performers and...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 5 pdf

Danh mục: Ngân hàng - Tín dụng

... There are long-term, short-term, and medium-term traders and those who combine time frames CTA Performance Evaluation with Data Envelopment Analysis 81 record, and measures of the covariance of ... the DEA model Results are presented and the final section concludes RISK MEASURES AND PERFORMANCE EVALUATION A multitude of investment fund performance models and metrics exist in part because ... often found in earlier tests and suggests that including information variables in performance analysis is important CTA Performance Evaluation with Data Envelopment Analysis 85 Mitev (1998) uses...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 6 potx

Danh mục: Ngân hàng - Tín dụng

... 106 PERFORMANCE characteristics with those of CTAs Subsequently, Schneeweis and Spurgin (1997), Brown, Goetzmann, and Park (2001), and Edwards and Caglayan (2001) performed ... variables SMB, HML, and HDMZD as in equation 6.1 and variables RUS, RUS2, and RUS3 corresponding to the Russell 3000 index to the power of 1, 2, and respectively The second candidates are financial ... utility-based performance measures than the Sharpe ratio and to a more proper use of stochastic discount factor–based performance measures, such as Jensen’s alpha, the Treynor ratio, or the Treynor and...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 7 docx

Danh mục: Ngân hàng - Tín dụng

... cross -evaluation, or cross-efficiency, model was first seen in Sexton, Silkman, and Hogan (1986) and later in Oral, Ketani, and Lang (1991), Doyle and Green (1994), and Thanassoulis, Boussofiane, and ... sectors, and the use of such analysis often has resulted in technical and efficiency improvements DEA also has been used recently to evaluate the performance of mutual 136 PERFORMANCE funds and determine ... most efficient funds (see, e.g., McMullen and Strong 1997; Bowlin 1998; Morey and Morey 1999; Sedzro and Sardano 2000; Basso and Funari 2001) Barr, Seiford, and Siems (1994), however, suggest that...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 8 pot

Danh mục: Ngân hàng - Tín dụng

... Mont, Tuet, Wedt, and Thut = dummy variables that represent day-of-the-week effects et = a standard normal error term Following Chang, Pinegar, and Schachter (1997) and Irwin and Yoshimaru (1999), ... hedge fund and CTA data and answering many questions This chapter is dedicated to the memory of Blake Imel of the CFTC, who first suggested that we analyze the hedge fund and CTA data and provided ... Schleifer, Summers, and Waldman 1990) Kodres and Pritsker (1996) and Kodres (1994) investigate herding behavior on a daily basis for large futures market traders, including hedge funds and CTAs, in...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 9 ppt

Danh mục: Ngân hàng - Tín dụng

... trading advisors use their special knowledge and insight in buying and selling futures and forward contracts to extract a positive return This skill and insight can be applied regardless of whether ... MLMI invests in and is equally weighted across 25 futures contracts in seven major commodity futures categories: grains, livestock, energy, metals, food and fiber, financials, and currencies The ... Additionally, the slope of the mimicking portfolio is flat to the right-hand side of the kink and has a negative slope to the left-hand side of the kink In sum, our mimicking portfolio captures the...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 10 pps

Danh mục: Ngân hàng - Tín dụng

... Tables 10.1, 10.3, 10.5, 10.7, and 10.9 present annualized returns, standard deviations, and Sharpe ratios of these portfolios and Tables 10.2, 10.4, 10.6, 10.8, and 10.10 present the correlations ... portfolios, and Table 10.2 presents the correlation matrix The top 50 percent monthly standard deviation, top 50 percent gain standard deviation, top 50 percent loss standard deviation, and top 50 ... perfect correlations, the top and bottom 50 percent monthly standard deviation portfolios with the top and bottom 50 percent average monthly gain portfolios, and the top and bottom 50 percent semideviation...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 11 ppt

Danh mục: Ngân hàng - Tín dụng

... they attempt to synchronize fiscal and monetary policy The Maastricht Treaty and the birth of “Euroland” is an example Corporations are expanding their operations and revenue streams beyond the site ... bankers or government regimes (See, e.g., McCarthy, Schneeweis, and Spurgin 1996; Schneeweis, Spurgin, and Potter 1997; and Edwards and Park 1996.) To analyze the impact of managed futures on the ... Within this framework, investment strategies and asset classes distinct from financial assets have the potential to diversify and protect an invest- 222 RISK AND MANAGED FUTURES INVESTING 25 Frequency...

Commodity Trading Advisors: Risk, Performance Analysis, and Selection Chapter 12 docx

Danh mục: Ngân hàng - Tín dụng

... oil, and other commodities that change in value in accordance with price fluctuations and improves portfolio performance because they typically have zero correlation to traditional markets The analysis ... surveillance, and (3) regulation of futures professionals To ensure the financial and market integrity of U.S futures markets, the CFTC reviews the terms and conditions of proposed futures and option ... Exchange rules cover trade clearance, trade orders and records, position and price limits, disciplinary actions, floor trading practices, and standards of business conduct Although an exchange...

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