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排序方式: 共有603条查询结果,搜索用时 31 毫秒
1.
Fathy A.E. Pendrick V.A. Geller B.D. Perlow S.M. Tormey E.S. Prabhu A. Tani S. 《Microwave Theory and Techniques》2002,50(10):2247-2252
We have developed an innovative semianalytical technique for various substrate material characterization. The developed technique is a measurement procedure and data-reduction formulation that takes into consideration the radiation loss in a resonant structure, allowing for a more effective means of dielectric- and conductor-loss determination for a microstrip ring resonator and its substrate material. We separate dielectric and conductor loss precisely, evaluate the contribution of each term in the overall loss performance, and analytically predict the error in their respective predicted value. 相似文献
2.
With the creation of balancing authorities by the North American Reliability Council that span large portions of the North American interconnection, and stringent requirements for real time monitoring of power system evolution, faster and more accurate state estimation algorithms that can efficiently handle systems of very large sizes are needed in the present environment. This paper presents a distributed state estimation algorithm suitable for large-scale power systems. Synchronized phasor measurements are applied to aggregate the voltage phase angles of each decomposed subsystem in the distributed state estimation solution. The aggregated state estimation solution is obtained from the distributed solution using a sensitivity analysis based update at chosen boundary buses. Placement of synchronized phasor measurements in the decomposed subsystems is also investigated in this paper. Test results on the IEEE 118-bus test bed are provided 相似文献
3.
A. A. Kherani B. J. Prabhu K. E. Avrachenkov E. Altman 《Telecommunication Systems》2005,30(4):321-350
We study an Adaptive Window Protocol (AWP) with general increase and decrease profiles in the presence of window dependent
random losses. We derive a steady-state Kolmogorov equation, and then obtain its solution in analytic form for particular
TCP versions proposed for high speed networks, such as Scalable TCP and HighSpeed TCP. We also relate window evolution under
an AWP to workload process in queueing systems; this observation gives us a way to compare various AWP protocols. 相似文献
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7.
Paul F.Smith Sameer M.Prabhu Jonathan H.Friedman 《电子设计应用》2008,(5):88-92
本文引入了基于模型设计的概念,突出了其中的一些优点,详细讨论了组织中采用基于模型设计文化的10个最佳策略。这些最佳策略从不同工业领域的公司中收集,包括向基于模型设计的成功或者不成功的过渡。 相似文献
8.
Prabhu K.M.M. Shanmuga Sundaram R. 《Vision, Image and Signal Processing, IEE Proceedings -》1996,143(6):383-386
A new fast algorithm is proposed to compute pseudodiscrete Wigner-Ville distribution (PDWVD) in real-time applications. The proposed algorithm uses the moving discrete Hartley transform to compute the Hilbert transform and thereby implements the PDWVD in real domain. The computational complexity of the proposed algorithm is derived and compared with the existing algorithm to compute the PDWVD 相似文献
9.
N Ram MV Rao L Prabhu CS Nirodi S Sultana PG Vatsala G Padmanaban 《Canadian Metallurgical Quarterly》1995,317(1):39-45
Polymeric films were deposited from hydroxyethylmethacrylate (HEMA) plasma on non-woven poly(butyleneterephtalate) (PBT) filter materials. To test the effect of deposition conditions on surface properties, film were deposited using a constant monomer flow rate and a discharge power ranging from 40-100 W. Surface composition and surface energetics were evaluated by Electron Spectroscopy for Chemical Analysis (ESCA) and contact angle measurement, respectively. Albumin (Alb) and fibrinogen (Fg) adsorption from single protein solutions to the plasma-coated filters was measured. Results illustrate the marked effects of the deposition condition on the surface composition, the surface field of forces, and the protein adsorption behavior. The latter is modeled by the application of the Good-van Oss-Chaudhury theory of Lewis acid-base contribution to interfacial energetics. Materials endowed with widely different properties are obtained from the same monomer and different deposition conditions, a result that must be taken into account both in the production step, to assure constant quality, and in the development of specifically tailored materials. 相似文献
10.
Adsorption on polarized Hg electrode of formate ions from aqueous solutions of pure HCOONa using differential capacity measurements was studied. Anion specific adsorption was indicated by the cathodic shift of potential of zero charge with increase in bulk-electrolyte activity. Variation of charge due to surface excess of sodium ions (Γ + Z+ F) and of charge due to specifically adsorbed formate ions (q1), with electrode charge (qM) indicated super-equivalent adsorption of formate ions at all positive charges and for all concentrations studied. Esin—Markov coefficient was found to be unreliable criterion of the occurence of specific adsorption. Logarithmic form of constant charge adsorption isotherms were found to be followed. The plots of φM ? 2vs q1 at constant qM were not linear and resembled those for F?, BF4? and CH3COO? ions; which is attributed to relatively weak specific adsorption of anions. 相似文献