performance of a controller action
performance of robust controller for dfim when the rotor angular speed is treated as a time-varying parameter
... frozen values of the rotor speed Then the performance of the LTI controller designed for a fixed value of is evaluated with other constant values of as well as with a fast variation of the rotor ... for a frozen value of was not completely guaranteed for other rotor angular speeds An important point that is needed to be emphasized in this particular case is that the performance of the controller ... control for timevarying and linear parametrically-varying systems International Journal of Robust and Nonlinear Control, 6:929 – 952, 1996 A Packard M Safonov G Balas, R Chiang Robust control...
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PERFORMANCE OF A COMBINED CONSTRUCTED WETLAND SYSTEM FOR TREATING VILLAGE SEWAGE IN LAKE DIANCHI VALLEY
... the pollutants concentration was low in the rain season (from May to October) The data from the local weather station showed that the average annual rainfall and evaporation was 802mm and 2093mm, ... which behaved as that the flux was small and the pollutants concentration was high because of high evaporation (from November to the April of next year) in dry season, and the flux was big and the ... order to make full use of the land advantage to strengthen ecological and scenical effect of ecological system The area was 2000 m2 and hydraulic loading rate was 4cm/d in the free-surface constructed...
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Experimental study on the performance of a prism-shaped integrated collector-storage solar water heater
... of solar radiation and average temperature of the present experimental study and the theoretical results of [1] in January Figure 12 The time variation of solar radiation and stored energy of the ... I, Farhan A Computational model for a prism shaped storage solar collector with a right triangular cross section Desalination 2007; 209: 171–181 [2] Khalifa AJN, Abdul Jabbar RA Conventional versus ... water accumulates at the bottom while hot water ascends to the top of the tank It is originated from the fact that, after gaining heat from the solar radiation, the tank wall heats a thin vertical...
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Ecological performance of a generalized irreversible Carnot heat engine with complex heat transfer law
... The total heat transfer surface area ( F ) of the two heat exchangers is assumed to be a constant: F = F1 + F2 (3) There exists a constant rate of bypass heat leakage ( q ) from the heat source ... heat transfer coefficient and F1 is the heat-transfer surface area of the hightemperature-side heat exchanger , β is the overall heat transfer coefficient and F2 is the heat-transfer surface area ... phenomenological heat transfer law Q ∝ (∆T −1 ) Sogut et al.[55] studied the optimal ecological performance of a solar driven heat engine Zhu et al [56, 57] obtained the optimal ecological performance...
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Experimental study of operation performance of a low power thermoelectric cooling dehumidifier
... Takata Y, Tanaka K, Kaijima K, et al Enhancement of heat transfer with liquid-vapor phase change by photo-induced hydrophilicity Proceedings of the 33rd National Heat Transfer Conference, Japan, ... thin layer of liquid film, driven by the surface tension Such a liquid film was a great thermal resistance and then led to a weak heat and mass transfer between the fin surfaces and the ambient ... respectively A 2.4W axial fan for forced convection was amounted on the fin heat exchanger of the heat side of the TED In order to eliminate the effect of contact resistances as possible, a thin layer of...
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Optimization of design and operating parameters on the year round performance of a multi-stage evacuated solar desalination system using transient mathematical analysis
... inclined at an angle equal to latitude of Chennai (13o) facing towards due south for the maximum year round performance Each evaporator and condenser tray has an area of 1m2 inclined at an angle of ... temperature from the flat plate collectors, latent heat and refined latent heat of vaporization of water from each stage and specific heat capacity of water from each stage are averaged over the day ... variation of global solar radiation and ambient temperature at Chennai for January to June _ Solar radiation -Ambient temperature Figure Mean monthly hourly variation of global solar radiation...
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Effect of injection timing on combustion and performance of a direct injection diesel engine running on Jatropha methyl ester
... over many other vegetable oils in terms of engine performance, emissions, ease of use and availability Jatropha curcas, locally known as ratanjyot, belongs to the family of Euphorbiaceae It is a ... development of biofuel, Planning commission, Government of India, 2003 S Jindal, B.P Nandwana, N.S Rathore Comparative evaluation of combustion, performance and emissions of Jatropha methyl ester and Karanj ... hydrocarbon (HC) and oxides of nitrogen (NOx) with exhaust gas opacity The software enables evaluation of performance from the acquired data using standard relationships The BTHE is evaluated...
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Tài liệu The Design and Performance of a Real-time CORBA Event Service doc
... Proxies If data was not availHigh Level able to be pulled, the calling I/O Facade would need to block I/O Facade I/O Facade I/O Facade Abstraction awaiting a result In order for the I/O Facade to ... have arrived from a particular set of suppliers, e.g., a correlation of events For instance, an I/O Facade may depend on data from a subset of all Sensor Proxies Furthermore, it may use data ... parameters of each schedulable operation One advantage of our approach is that operation invocations only pay the overhead of the C++ virtual method call If the schedule was not determined off-line,...
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NATIONAL REPORT OF MALAYSIA ON THE FORMULATION OF A TRANSBOUNDARY DIAGNOSTIC ANALYSIS AND PRELIMINARY FRAMEWORK OF A STRATEGIC ACTION PROGRAMME FOR THE BAY OF BENGAL potx
... Peninsular Malaysia and the states of Sabah and Sarawak in the north of Kalimantan Kuala Lumpur, the national capital, Labuan UNEP/SCS – National Report Malaysia and Putra Jaya form the Federal territories ... meters and with a tidal stream of over knots The West Coast of Peninsular Malaysia has an equatorial climate, with an average annual rainfall of more than 2500mm and a daily temperature that ranges ... include: Friends of the Earth (Sahabat Alam Malaysia), World Wildlife Fund for Nature (Malaysia), Malaysian Institute of Marine Affairs (MIMA), Malaysian Nature Society, Malaysian Fisheries Society,...
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Measuring and modelling the performance of a parallel ODMG compliant object database server potx
... Muralikrishna M Gamma a high performance dataflow database machine Proceedings of the International Conference on Very Large Data Bases, Kyoto, Japan, August 1986 Morgan Kaufmann: San Mateo, CA, ... optimization and parallelization are automatic, having as a result an operator tree that represents a query’s evaluation plan Although all of them implement some form of intra-transaction parallelism, ... development of a parallel object database server is given in [14] An early parallel object database project was Bubba [15], which had a functional query language FAD Although the Bubba model and languages...
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Báo cáo hóa học: " Improvement on thermal performance of a diskshaped miniature heat pipe with nanofluid" docx
... Japan) micrograph of the gold nanoparticles with an average diameter of 17 nm; the volume fraction of the gold nanoparticles in the nanofluid was about 0.17% There are several types of carbon nanoparticles ... and the average diameter of a carbon nanoparticle was approximately 68 nm For convenience, the mixture of multiwall carbon nanotubes and carbon nanoballs in the base fluid was still called carbon ... viscosity of the nanofluid with carbon nanoparticles is about 12% higher than that of the DI water The volume fraction of carbon nanoparticles in the nanofluid is about 9.7% As compared with the nanofluid...
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Báo cáo hóa học: " Research Article Impact of LQI-Based Routing Metrics on the Performance of a One-to-One Routing Protocol for IEEE 802.15.4 Multihop Networks" docx
... 100%) As the average LQI decreases, the standard deviation of LQI increases, to reach a peak value of 13.8 for an average LQI of 79.1 From this point, as the average LQI decreases further, the standard ... evaluation in Section However, as shown in Figure 2, the accuracy of the average LQI as a good estimator of the LDR varies depending on the quality of the link Large and small average LQI values ... on Advanced Information Networking and Applications Workshops/Symposia (AINAW ’07), vol 1, pp 159–164, Niagara Falls, Canada, May 2007 [16] R Draves, J Padhye, and B Zill, “Routing in multi-radio,...
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Báo cáo hóa học: "Research Article Spectrum Sharing in an ISM Band: Outage Performance of a Hybrid DS/FH Spread Spectrum System with Beamforming" docx
... n,l 4.2 Partial-Band Interference Partial-band interferers occupy part of the hoped bandwidth A partial-band interferer to a DS/FH signal is the same as a partial-band jammer to a spread spectrum ... (t)dt, Performance of CDMA system has been analyzed using Standard Gaussian approximation (SGA), improved Gaussian approximation (IGA), and simplified IGA (SIGA) to model the interference statistics ... The baseband signal is digitized and sent to a data acquisition server over LAN The ComBlock assemblies are fully controlled over LAN by our MATLAB-based application that coordinates data acquisition...
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Báo cáo hóa học: " Research Article Design, Analysis, and Performance of a Noise Modulated Covert Communications System" ppt
... our assumption that the filtered sum frequency noise terms can be approximated as Gaussian After realizing that the filtered noise terms can be approximated as Gaussians, their means and variances ... perfect antenna alignment, α = and β = 0, and there is no polarization leakage As the rotation angle increases, the value of β increases while the value of α decreases When the rotation angle is ... a ect the BER analysis In an additive white Gaussian noise channel, the actual received signal from the vertically polarized antenna V (t) and the horizontally polarized antenna H(t) can be written,...
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Báo cáo hóa học: " Research Article Performance of a Two-Level Call Admission Control Scheme for DS-CDMA Wireless Networks" potx
... given value of Λ, the average waiting time decreases very rapidly as the bandwidth reservation ratio is increased As an example, at an aggregate new call arrival rate of 0.35 calls/sec, the average ... the average waiting time of class calls assuming the 2-level CAC scheme The results are plotted against reservation bandwidth ratio and parameterized by aggregate new call arrival rate, Λ For a ... the feasible state space S, any state transition is caused by one of the following events: (1) arrival of a class new call, (2) arrival of a class handoff call from a neighboring cell, (3) departure...
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Improving the performance of a high power, lead–acid battery with paste additives docx
... sulfate ions Researchers w15,16x have found that after a certain amount of the active material has reacted the remaining material becomes isolated and cannot react The amount of active material ... Table Battery design parameters Parameters Fig Critical volume fraction with material additives conductivity model, to estimate lead–acid battery performance over a wide range of discharge rates ... of nodes that were either discharged or isolated The critical volume fraction is calculated as the ratio of discharged nodes to the initial number of available nodes The model can take into account...
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Báo cáo lâm nghiệp: "Rationalization of the performance of a mobile off-road system working in the forest environment with respect to its emission load" doc
... important measures compensating the environment contamination by extraneous substances are preventive measures that can be applied on a larger part of the area of endangered forest ecosystems According ... logging and transport systems), resulting from the changed performance of the system, not always cause a change in power and material consumption and thus a change in heterogeneous substance emissions ... Dias A. C., Arroja L., Capela I., 2007 Carbon dioxide emissions from forest operations in Portuguese eucalypt and maritime pine stands Scandinavian Journal of Forest Research, 22: 422–432 Duvigneaud...
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Báo cáo y học: " Effect of 28 days of creatine ingestion on muscle metabolism and performance of a simulated cycling road race" docx
... conduct of the study, data analysis and manuscript preparation DD participated in protocol design, sample analyses and manuscript preparation JS participated in data collection, sample analysis ... sets of three 10second sprints Declaration of Competing interests The authors declare that they have no competing interests Abbreviations ANOVA: Analysis of variance; ANCOVA: Analysis of covariance; ... each variable a two-way [treatment (creatine or placebo) * time (pre and post supplementation)] repeated measures ANOVA ANCOVA was performed using pre data as a covariate for hemoglobin, hematocrit,...
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Finite time exergoeconomic performance of a generalized irreversible carnot heat engine with complex heat transfer law
... exists a constant rate of bypass heat leakage ( q ) from the heat source to the heat sink This bypass heat leakage model was advanced first by Bejan [50, 51] and was extended by Gordon and Huleihil ... heat transfer coefficient and F1 is the heat transfer surface area of the hightemperature-side heat exchanger; β is the overall heat transfer coefficient and F2 is the heat transfer surface area ... thermoeconomic performance of refrigerators and heat pumps Energy Convers Manage., 2000, 41(6): 607-619 Sahin B, Kodal A, Koyun A Optimal performance characteristics of a two-stage irreversible...
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Effect of heat transfer law on the finite time exergoeconomic performance of a generalized irreversible carnot heat engine
... total heat transfer surface area of the two heat exchangers is taken as a constant , that is F1 + F2 = FT (12) And a ratio ( f ) of heat exchanger area is defined as f = F1 F2 (13) Assuming that the ... at maximum profit rate π max does not equal to the optimal temperature ratio xη at maximum efficiency η max The optimal temperature ratio xπ at maximum profit rate π max can be derived by taking ... k1 and k are the overall heat-transfer coefficients of high- and low-temperature side heatexchangers, F1 and F2 are the surface areas of high- and low-temperature side heat-exchangers The total...
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