WorldWideScience

Sample records for delhiensis subba rao

  1. RAO Logic for Multiagent Framework

    Institute of Scientific and Technical Information of China (English)

    SHI Zhongzhi; TIAN Qijia; LI Yunfeng

    1999-01-01

    In this paper, we deal with how agentsreason about knowledge of others in multiagent system. We firstpresent a knowledge representation framework called reasoning aboutothers (RAO) which isdesigned specifically to represent concepts and rules used inreasoning about knowledge of others. From a class of sentences usuallytaken by people in daily life to reason about others, a rule called position exchange principle (PEP) is abstracted. PEP is described as anaxiom scheme in RAO and regarded as a basic rule for agents to reasonabout others, and further it has the similar formand role to modus ponens and (K) axiom of knowledge logic. Therelationship between speech acts and common sense is also discussedwhich is necessary for RAO. Based on ideas fromsituation calculus, this relationship is characterized by an axiomschema in RAO. Our theories are also demonstrated by an example.

  2. The Burbea-Rao and Bhattacharyya centroids

    CERN Document Server

    Nielsen, Frank

    2010-01-01

    We study the centroid with respect to the class of information-theoretic distortion measures called Burbea-Rao divergences. Burbea-Rao divergences generalize the Jensen-Shannon divergence by measuring the non-negative Jensen difference induced by a strictly convex and differentiable function expressing a measure of entropy. We first show that a symmetrization of Bregman divergences called Jensen-Bregman distances yields a natural definition of Burbea-Rao divergences. We then define skew Burbea-Rao divergences, and prove that skew Burbea-Rao divergences amount to compute Bregman divergences in asymptotical cases. We prove that Burbea-Rao centroids are always unique, and we design a generic iterative algorithm for efficiently estimating those centroids with guaranteed convergence. In statistics, the Bhattacharyya distance is widely used to measure the degree of overlap of probability distributions. This distance notion is all the more useful as it provides both upper and lower bounds on Bayes misclassification ...

  3. Hartebeesthoek Radio Astronomy Observatory (HartRAO)

    Science.gov (United States)

    Nickola, Marisa; Gaylard, Mike; Quick, Jonathan; Combrinck, Ludwig

    2013-01-01

    HartRAO provides the only fiducial geodetic site in Africa, and it participates in global networks for VLBI, GNSS, SLR, and DORIS. This report provides an overview of geodetic VLBI activities at HartRAO during 2012, including the conversion of a 15-m alt-az radio telescope to an operational geodetic VLBI antenna.

  4. Computing Constrained Cramer Rao Bounds

    CERN Document Server

    Tune, Paul

    2012-01-01

    We revisit the problem of computing submatrices of the Cram\\'er-Rao bound (CRB), which lower bounds the variance of any unbiased estimator of a vector parameter $\\vth$. We explore iterative methods that avoid direct inversion of the Fisher information matrix, which can be computationally expensive when the dimension of $\\vth$ is large. The computation of the bound is related to the quadratic matrix program, where there are highly efficient methods for solving it. We present several methods, and show that algorithms in prior work are special instances of existing optimization algorithms. Some of these methods converge to the bound monotonically, but in particular, algorithms converging non-monotonically are much faster. We then extend the work to encompass the computation of the CRB when the Fisher information matrix is singular and when the parameter $\\vth$ is subject to constraints. As an application, we consider the design of a data streaming algorithm for network measurement.

  5. Bhaskar Rao: far from resigned.

    Science.gov (United States)

    Khandekar, S

    1992-03-01

    In 1972, Dr. Bhaskar Rao 1st worked for Operations Research Group (ORG), a market research agency. He resigned as its President in December 1991 after it was sold to Business India. He was able to life ORG from just an audit organization to an organization that could conduct analyses and formulate strategies, and that was doing well financially. He was not willing to let this well-respected, independent, professional, and nonprofit group be viewed as part of a for-profit magazine company, however. After finishing his undergraduate education, he became involved in the social service organization directed by Nehru. In 1962, he worked full time for its mass awareness group and then worked to combat rumors during the India-China war. In 1963, he worked with farmers to educate them on how to use fertilizers to increase yield. This experience brought him a scholarship to study social science at Kansas State University in 1967. In the US, he took a course at Martin Luther King's School for Social Change to further his political interests. He received a Ph.D. in mass communications from the University of Iowa then returned to India. In 1970, he worked for the Ford Foundation as a consultant to the Ministry of Health and Family Planning which wanted to survey 25,000 people to learn their perceptions of family planning. He dealt with ORG. The owner convinced him to leave the Ford Foundation and work for ORG where he worked on the family planning survey and the national readership survey. In 1973, he challenged remarks made by the minister of information and broadcast during a public speech. Impressed, the minister offered him an evaluation advisor position. In 1977, however, he left and returned to ORG where he became widely known as a media analyst. In 1983, he became vice president of ORG and president in 1985.

  6. Obituary - Dr. A. Venkoba Rao

    Directory of Open Access Journals (Sweden)

    Ajai R. Singh

    2005-11-01

    Full Text Available I have to inform with great regret the sad demise of Dr Venkoba Rao, one of the senior most and highly esteemed psychiatrists this country has produced. His research work in psychiatry and medicine, as well as his work in philosophy and the human predicament, have been noteworthy indeed. He was a researcher and an academician of the highest order.It was always a great pleasure interacting with him. Both juniors and his peers will remember him with great regard and equal fondness. He never made himself difficult to approach, and was open to all positive inputs, from whatever source.He was highly appreciative of the work done by the Mens Sana Research Foundation too. I treasure the encouraging letter he wrote to us sometime back about the Mens Sana Monograph Psychiatry, Science, Religion and Health, of which here is an excerpt:The articles in general are of high standard and are very readable.....Imust tell you that your monograph makes an enjoyable and informative reading and my personal congratulations to you on your achievement.In fact, he was encouraging towards all efforts in the field of mental health.His wide knowledge of philosophy and Indian thought, coupled with active research interest in mainstream psychiatry, made him a unique presence in the field.His absence will be felt for a long long time indeed.But I have lived, and have not lived in vain;My mind may lose its force, my blood its fire,And my frame perish even in conquering pain:But there is that within me which shall tireTorture and Time, and breathe when I expire;Something unearthly, which they deem not of,Like the remembered tone of a mute lyre....Byron ( Childe Harold On behalf of the Mens Sana Editorial Board, our subscribers, readers, as well as the Mensanamonographs group, I offer our deepest condolences to his bereaved family.May his soul rest in peace.

  7. Rao Heidmets tegi eestlaste traagilised elulood filmiks / Tiit Tuumalu

    Index Scriptorium Estoniae

    Tuumalu, Tiit, 1971-

    2007-01-01

    Joonisfilm "Elulood" : stsenaristid Rao Heidmets ja Mats Traat : režissöör Rao Heidmets : kunstnik Ave Nahkur : helilooja Olav Ehala : esilinastus Torontos, oktoober 2007 : Eesti esilinastus 25. nov. 2007. Lisatud "Filmis kõlavaid elulookatkeid"

  8. Weierstrass semigroups and the Feng-Rao Distance

    DEFF Research Database (Denmark)

    Campillo, Antonio; Farran, Ignacio

    2000-01-01

    We detrmine the Feng-Rao distance for several claases of codes from algebraic geometry usingthe weierstrass semigroups......We detrmine the Feng-Rao distance for several claases of codes from algebraic geometry usingthe weierstrass semigroups...

  9. On the Feng-Rao bound for generalized hamming weights

    DEFF Research Database (Denmark)

    Geil, Hans Olav; Thommesen, Christian

    2006-01-01

    The Feng-Rao bound gives good estimates of the minimum distance of a large class of codes. In this work we are concerned with the problem of how to extend the Feng-Rao bound so that it deals with all the generalized Hamming weights. The problem was solved by Heijnen and Pellikaan in [7] for a lar...

  10. On the Feng-Rao bound for generalized Hamming weights

    DEFF Research Database (Denmark)

    Geil, Olav; Thommesen, Christian

    2005-01-01

    The Feng-Rao bound gives good estimates of the minimum distance of a large class of codes. In this work we are concerned with the problem of how to extend the Feng-Rao bound so that it deals with all the generalized Hamming weights. The problem was solved by Heijnen and Pellikaan in [7] for a large...... family of codes that includes the duals of one-point geometric Goppa codes and the q-ary Reed-Muller codes, but not the Feng-Rao improved such ones. We show that Heijnen and Pellikaan’s results holds for the more general class of codes for which the traditional Feng-Rao bound can be applied. We also...... establish the connection to the Shibuya-Sakaniwa bound for generalized Hamming weights ([15], [16], [17], [18], [19] and [20]). More precisely we show that the Shibuya-Sakaniwa bound is a consequence of the extended Feng-Rao bound. In particular the extended Feng-Rao bound gives always at least as good...

  11. Cramer-Rao bound in detection of reversals

    CERN Document Server

    Ivanov, S A

    2013-01-01

    We use the Cramer-Rao bound to show which short magnetic reversals can be recovered successfully from a magnetic anomaly profile. Using a simple variant of the Vine-Matthews model, we show, in particular, that errors in determining the duration of a short subchron are much smaller than errors in localizing the center of the subchron.

  12. Khatri-Rao Products for Operator Matrices Acting on the Direct Sum of Hilbert Spaces

    Directory of Open Access Journals (Sweden)

    Arnon Ploymukda

    2016-01-01

    Full Text Available We introduce the notion of Khatri-Rao product for operator matrices acting on the direct sum of Hilbert spaces. This notion generalizes the tensor product and Hadamard product of operators and the Khatri-Rao product of matrices. We investigate algebraic properties, positivity, and monotonicity of the Khatri-Rao product. Moreover, there is a unital positive linear map taking Tracy-Singh products to Khatri-Rao products via an isometry.

  13. The Rao-Blackwellized Particle Filter: A Filter Bank Implementation

    Directory of Open Access Journals (Sweden)

    Karlsson Rickard

    2010-01-01

    Full Text Available For computational efficiency, it is important to utilize model structure in particle filtering. One of the most important cases occurs when there exists a linear Gaussian substructure, which can be efficiently handled by Kalman filters. This is the standard formulation of the Rao-Blackwellized particle filter (RBPF. This contribution suggests an alternative formulation of this well-known result that facilitates reuse of standard filtering components and which is also suitable for object-oriented programming. Our RBPF formulation can be seen as a Kalman filter bank with stochastic branching and pruning.

  14. The Hartshorne-Rao module of curves on rational normal scrolls

    Directory of Open Access Journals (Sweden)

    Roberta Di Gennaro

    2000-09-01

    Full Text Available We study the Hartshorne-Rao module of curves lying on a rational normal scroll S_e of invariant e ≥ 0 in P^{e+3} .We calculate the Rao function, we characterize the aCM curves on S_e .Finally, we give an algorithm to check if a curve is aC M or not and, inthe second case, to calculate the Rao function.

  15. Fast Erasure and Error decoding of Algebraic Geometry Codes up to the Feng-Rao Bound

    DEFF Research Database (Denmark)

    Jensen, Helge Elbrønd; Sakata, S.; Leonard, D.

    1996-01-01

    This paper gives an errata(that is erasure-and error-) decoding algorithm of one-point algebraic geometry codes up to the Feng-Rao designed minimum distance using Sakata's multidimensional generalization of the Berlekamp-massey algorithm and the votin procedure of Feng and Rao.......This paper gives an errata(that is erasure-and error-) decoding algorithm of one-point algebraic geometry codes up to the Feng-Rao designed minimum distance using Sakata's multidimensional generalization of the Berlekamp-massey algorithm and the votin procedure of Feng and Rao....

  16. U. B. Narayan Rao and the origins of the IJDVL

    Directory of Open Access Journals (Sweden)

    Joshi Rajiv

    2008-01-01

    Full Text Available Dr. U. B. Narayan Rao L.C.P.S (Bom (born 23 rd November 1895, died 14 th June 1960 had a busy general practice in Bombay. He adopted dermatology and venereology as his specialty in the 1930′s and started the Indian Journal of Venereal Diseases in 1935, the first of its kind in the subcontinent. This journal went on to become the official mouthpiece of the Indian Association of Dermatologists and Venereologists in 1955 and was then known as the Indian Journal of Dermatology and Venereology. Dr. Narayan Rao also played an important role as a founder member of the Bombay Association of Dermato-Venereologists as well as the Indian Association of Dermatologists and Venereologists. Activist, indefatigable worker dedicated to the cause, nationalist, and patriot, generous, dynamic and aggressive, with a flare for arguing; negotiating and convincing, and winning friends in the process, were some of the attributes that may be mentioned of this remarkable person who contributed so much to our specialty.

  17. Efficient multisensor resource management using Cramer-Rao lower bounds

    Science.gov (United States)

    Hernandez, Marcel L.; Kirubarajan, Thiagalingam; Bar-Shalom, Yaakov

    2002-08-01

    This paper describes the development of a general framework for the efficient management of multiple sensors in target tracking. The basis of the technique is to quantify, and subsequently control, the accuracy of target state estimation. The Posterior Cramer-Rao lower bound provides the means of achieving this aim by enabling us to determine a bound on the performance of all unbiased estimators of the unknown target state. The general approach is then to use optimization techniques to control the measurement process in order to achieve accurate target state estimation. We are concerned primarily with the deployment and utilization of a limited sensor resource. We also allow for measurement origin uncertainty, with sensor measurements either target generated or false alarms. We exploit previous work to determine a general expression for the Fisher Information Matrix in this case. We show that by making certain assumptions we can express the measurement uncertainty as a constant information reduction factor. This enables the Fisher Information Matrix to be calculated quickly, allowing Cramer-Rao bounds to be utilized for real-time, online sensor management.

  18. Oxidant-antioxidant status in the blood of horses with symptomatic recurrent airway obstruction (RAO).

    Science.gov (United States)

    Niedzwiedz, A; Jaworski, Z

    2014-01-01

    Systemic oxidative stress in horses with recurrent airway obstruction (RAO) is poorly characterized. The goal of this study was to investigate whether equine RAO is associated with systemic disturbances in the oxidant-antioxidant equilibrium. Seven healthy horses and 7 horses with symptomatic RAO. A prospective study. Healthy and RAO-affected horses were exposed to a 48-hour challenge with moldy hay and straw to induce clinical exacerbation of RAO. Venous blood was collected and the activities of the superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and glutathione reductase (GR) in equine erythrocyte lysates were measured. The concentration of thiobarbituric acid-reactive substances (TBARSs) was assessed both in erythrocyte lysates and in plasma. A significant increase in the activities of GPx and SOD was detected in RAO-affected horses compared with the control animals. There was no significant difference between groups in terms of the erythrocyte lysate activities of CAT, GR, or TBARs or the plasma concentration of TBARs. Our results support the hypothesis that RAO in horses is associated with systemic oxidative stress. Future studies are needed to assess whether horses suffering from RAO can benefit from antioxidant supplementation. Copyright © 2014 by the American College of Veterinary Internal Medicine.

  19. Cramér-Rao-Type Bounds for Localization

    Directory of Open Access Journals (Sweden)

    Chang Cheng

    2006-01-01

    Full Text Available The localization problem is fundamentally important for sensor networks. This paper, based on "Estimation bounds for localization" by the authors (2004 © IEEE, studies the Cramér-Rao lower bound (CRB for two kinds of localization based on noisy range measurements. The first is anchored localization in which the estimated positions of at least nodes are known in global coordinates. We show some basic invariances of the CRB in this case and derive lower and upper bounds on the CRB which can be computed using only local information. The second is anchor-free localization where no absolute positions are known. Although the Fisher information matrix is singular, a CRB-like bound exists on the total estimation variance. Finally, for both cases we discuss how the bounds scale to large networks under different models of wireless signal propagation.

  20. Improved Rao-Blackwellized Particle Filter by Particle Swarm Optimization

    Directory of Open Access Journals (Sweden)

    Zeng-Shun Zhao

    2013-01-01

    Full Text Available The Rao-Blackwellized particle filter (RBPF algorithm usually has better performance than the traditional particle filter (PF by utilizing conditional dependency relationships between parts of the state variables to estimate. By doing so, RBPF could not only improve the estimation precision but also reduce the overall computational complexity. However, the computational burden is still too high for many real-time applications. To improve the efficiency of RBPF, the particle swarm optimization (PSO is applied to drive all the particles to the regions where their likelihoods are high in the nonlinear area. So only a small number of particles are needed to participate in the required computation. The experimental results demonstrate that this novel algorithm is more efficient than the standard RBPF.

  1. Stochastic processes and functional analysis a volume of recent advances in honor of M. M. Rao

    CERN Document Server

    Krinik, Alan C

    2004-01-01

    This extraordinary compilation is an expansion of the recent American Mathematical Society Special Session celebrating M. M. Rao's distinguished career and includes most of the presented papers as well as ancillary contributions from session invitees. This book shows the effectiveness of abstract analysis for solving fundamental problems of stochastic theory, specifically the use of functional analytic methods for elucidating stochastic processes, as made manifest in M. M. Rao's prolific research achievements. Featuring a biography of M. M. Rao, a complete bibliography of his published works,

  2. CMB likelihood approximation by a Gaussianized Blackwell-Rao estimator

    CERN Document Server

    Rudjord, Ø; Eriksen, H K; Huey, Greg; Górski, K M; Jewell, J B

    2008-01-01

    We introduce a new CMB temperature likelihood approximation called the Gaussianized Blackwell-Rao (GBR) estimator. This estimator is derived by transforming the observed marginal power spectrum distributions obtained by the CMB Gibbs sampler into standard univariate Gaussians, and then approximate their joint transformed distribution by a multivariate Gaussian. The method is exact for full-sky coverage and uniform noise, and an excellent approximation for sky cuts and scanning patterns relevant for modern satellite experiments such as WMAP and Planck. A single evaluation of this estimator between l=2 and 200 takes ~0.2 CPU milliseconds, while for comparison, a single pixel space likelihood evaluation between l=2 and 30 for a map with ~2500 pixels requires ~20 seconds. We apply this tool to the 5-year WMAP temperature data, and re-estimate the angular temperature power spectrum, $C_{\\ell}$, and likelihood, L(C_l), for l<=200, and derive new cosmological parameters for the standard six-parameter LambdaCDM mo...

  3. Coarrays, MUSIC, and the Cramér-Rao Bound

    Science.gov (United States)

    Wang, Mianzhi; Nehorai, Arye

    2017-02-01

    Sparse linear arrays, such as co-prime arrays and nested arrays, have the attractive capability of providing enhanced degrees of freedom. By exploiting the coarray structure, an augmented sample covariance matrix can be constructed and MUSIC (MUtiple SIgnal Classification) can be applied to identify more sources than the number of sensors. While such a MUSIC algorithm works quite well, its performance has not been theoretically analyzed. In this paper, we derive a simplified asymptotic mean square error (MSE) expression for the MUSIC algorithm applied to the coarray model, which is applicable even if the source number exceeds the sensor number. We show that the directly augmented sample covariance matrix and the spatial smoothed sample covariance matrix yield the same asymptotic MSE for MUSIC. We also show that when there are more sources than the number of sensors, the MSE converges to a positive value instead of zero when the signal-to-noise ratio (SNR) goes to infinity. This finding explains the "saturation" behavior of the coarray-based MUSIC algorithms in the high SNR region observed in previous studies. Finally, we derive the Cram\\'er-Rao bound (CRB) for sparse linear arrays, and conduct a numerical study of the statistical efficiency of the coarray-based estimator. Experimental results verify theoretical derivations and reveal the complex efficiency pattern of coarray-based MUSIC algorithms.

  4. NSCT Domain Additive Watermark Detection Using RAO Hypothesis Test and Cauchy Distribution

    Directory of Open Access Journals (Sweden)

    Hongbo Bi

    2016-01-01

    Full Text Available We presented a RAO hypothesis detector by modeling Cauchy distribution for the Nonsubsampled Contourlet Transform (NSCT subband coefficients in the field of additive spread spectrum image watermarking. Firstly, the NSCT subband coefficients were modeled following the Cauchy distributions, and the Fit of Goodness shows that Cauchy distribution fits the NSCT subband coefficients more accurately than the Generalized Gaussian Distribution (GGD commonly used. Secondly, a blind RAO test watermark detector was derived in the NSCT domain, which does not need the knowledge of embedding strength at the receiving end. Finally, compared to the other three state-of-art detectors, the robustness of the proposed watermarking scheme was evaluated when the watermarked images were attacked by JPEG compression, random noise, low pass filtering, and median filtering. Experimental results show that, compared with the other three detectors, the proposed RAO detector guarantees the lower probability of miss under the given probability of false alarm.

  5. Cosine directions using Rao-Blackwell Theorem and Hausdorff metric in Quasars

    CERN Document Server

    Bell, Byron E

    2015-01-01

    This analysis will determine the equations of the cosine directions for all flux of the optical spectrum in quasars. Studies on Hausdorff metric will greatly enhance our understanding of quasars distances. This study will complete steps in the classification of quasars by finding the minimum variance of flux by using the RaoBlackwell Theorem. The papers of C. R. Rao and D. Blackwell will be examined to clarify more of the above theorem. Keywords: Theory of Flux, SDSS, Quasars, Redshift (z), Population Perimeters, Regression Analysis

  6. POSTERIOR CRAMéR-RAO BOUNDS ANALYSIS FOR PASSIVE TARGET TRACKING

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    For the problem of deterministic parameter estimate, the theoretical lower bound of estimate error is the Cramér-Rao bound; while for random parameter, the lower bound of estimate error is generally termed by Posterior Cramér-Rao Bound (PCRB). Under the background of passive tracking where the target's state can be seen as a time-varying random parameter, PCRB of the state estimate error is analyzed in this paper, and the relation between PCRB and varied condition is also fully investigated using different simulation examples. The presented analytical method provides a theoretical base for performance assessment of all kinds of suboptimal estimate algorithms used in practice.

  7. Posterior Cramer-Rao lower bounds for multitarget bearings-only tracking

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Usually, only the Cramer-Rao lower bound (CRLB) of single target is taken into consideration in the state estimate of passive tracking systems. As for the case of multitarget, there are few works done due to its complexity. The recursion formula of the posterior Cramer-Rao lower bound (PCRLB) in multitarget bearings-only tracking with the three kinds of data association is presented. Meanwhile, computer simulation is carried out for data association. The final result shows that the accuracy probability of data association has an important impact on the PCRLB.

  8. Fast Erasure-and error decoding of algebraic geometry codes up to the Feng-Rao bound

    DEFF Research Database (Denmark)

    Høholdt, Tom; Jensen, Helge Elbrønd; Sakata, Shojiro

    1998-01-01

    This correspondence gives an errata (that is erasure-and error-) decoding algorithm of one-point algebraic-geometry codes up to the Feng-Rao designed minimum distance using Sakata's multidimensional generalization of the Berlekamp-Massey algorithm and the voting procedure of Feng and Rao....

  9. RSCABS: An R package for performing the Rao-Scott Adjusted Cochran-Armitage trend test By Slices

    Science.gov (United States)

    RSCABS[3] (Rao-Scott adjusted Cochran-Armitage trend test By Slices) is a modification to the Rao-Scott[5] adjusted Cochran-Armitage trend test[1, 2] that allows for testing at each individual severity score often seen in histopathological data. The test was originally developed ...

  10. Cross-cultural adaptation and validation of the French version of the Rheumatoid and Arthritis Outcome Score (RAOS)

    DEFF Research Database (Denmark)

    Duval, Aurelie; Maillefert, Jean Francis; Gossec, Laure

    2010-01-01

    The Rheumatoid and Arthritis Outcome Score (RAOS) was recently developed to evaluate functional disability and quality of life in rheumatoid arthritis (RA) patients suffering from lower limb symptoms. The aims of this study were to cross-culturally adapt the RAOS into French and to assess its...

  11. Using Cramer-Rao theory as spectrometer design tool aimed at quantitative complex-spectrum analysisa)

    Science.gov (United States)

    Klinkhamer, J. F. F.; van der Valk, N. C. J.; von Hellermann, M. G.; Jaspers, R.

    2008-10-01

    In this paper the use of the Cramer-Rao lower bound (CRLB) to aid in the design of diagnostic systems dealing with complex spectra is discussed. Specifically it is discussed how a priori knowledge, used to improve the estimation, can be included in the CRLB analysis. This provides improved predictions for the spectrometer characteristics that will lead to an optimal system.

  12. Wideband DOA Estimation via Sparse Bayesian Learning over a Khatri-Rao Dictionary

    Directory of Open Access Journals (Sweden)

    Yujian Pan

    2015-06-01

    Full Text Available This paper deals with the wideband direction-of-arrival (DOA estimation by exploiting the multiple measurement vectors (MMV based sparse Bayesian learning (SBL framework. First, the array covariance matrices at different frequency bins are focused to the reference frequency by the conventional focusing technique and then transformed into the vector form. Then a matrix called the Khatri-Rao dictionary is constructed by using the Khatri-Rao product and the multiple focused array covariance vectors are set as the new observations. DOA estimation is to find the sparsest representations of the new observations over the Khatri-Rao dictionary via SBL. The performance of the proposed method is compared with other well-known focusing based wideband algorithms and the Cramer-Rao lower bound (CRLB. The results show that it achieves higher resolution and accuracy and can reach the CRLB under relative demanding conditions. Moreover, the method imposes no restriction on the pattern of signal power spectral density and due to the increased number of rows of the dictionary, it can resolve more sources than sensors.

  13. Computing the Feng-Rao distances for codes from order domains

    DEFF Research Database (Denmark)

    Ruano Benito, Diego

    2007-01-01

    We compute the Feng–Rao distance of a code coming from an order domain with a simplicial value semigroup. The main tool is the Apéry set of a semigroup that can be computed using a Gröbner basis....

  14. Approaching the Cramer-Rao Bound in Weak Lensing with PDF Symmetrization

    CERN Document Server

    Zhang, Jun

    2016-01-01

    Weak lensing statistics is typically measured as weighted sum of shear estimators or their products (shear-shear correlation). The weighting schemes are designed in the hope of minimizing the statistical error without introducing systematic errors. It would be ideal to approach the Cramer-Rao bound (the lower bound of the statistical uncertainty) in shear statistics, though it is generally difficult to do so in practice. The reasons may include: difficulties in galaxy shape measurement, inaccurate knowledge of the probability-distribution-function (PDF) of the shear estimator, misidentification of point sources as galaxies, etc.. Using the shear estimators defined in Zhang et al. (2015), we show that one can overcome all these problems, and allow shear measurement accuracy to approach the Cramer-Rao bound. This can be achieved by symmetrizing the PDF of the shear estimator, or the joint PDF of shear estimator pairs (for shear-shear correlation), without any prior knowledge of the PDF. Using simulated galaxy i...

  15. Quantum metrology in open systems: dissipative Cramér-Rao bound.

    Science.gov (United States)

    Alipour, S; Mehboudi, M; Rezakhani, A T

    2014-03-28

    Estimation of parameters is a pivotal task throughout science and technology. The quantum Cramér-Rao bound provides a fundamental limit of precision allowed to be achieved under quantum theory. For closed quantum systems, it has been shown how the estimation precision depends on the underlying dynamics. Here, we propose a general formulation for metrology scenarios in open quantum systems, aiming to relate the precision more directly to properties of the underlying dynamics. This feature may be employed to enhance an estimation precision, e.g., by quantum control techniques. Specifically, we derive a Cramér-Rao bound for a fairly large class of open system dynamics, which is governed by a (time-dependent) dynamical semigroup map. We illustrate the utility of this scenario through three examples.

  16. Analysing Institutions Interdisciplinarity by Extensive Use of Rao-Stirling Diversity Index.

    Science.gov (United States)

    Cassi, Lorenzo; Champeimont, Raphaël; Mescheba, Wilfriedo; de Turckheim, Élisabeth

    2017-01-01

    This paper shows how the Rao-Stirling diversity index may be extensively used for positioning and comparing institutions interdisciplinary practices. Two decompositions of this index make it possible to explore different components of the diversity of the cited references in a corpus of publications. The paper aims at demonstrating how these bibliometric tools can be used for comparing institutions in a research field by highlighting collaboration orientations and institutions strategies. To make the method available and easy to use for indicator users, this paper first recalls a previous result on the decomposition of the Rao-Stirling index into multidisciplinarity and interdisciplinarity components, then proposes a new decomposition to further explore the profile of research collaborations and finally presents an application to Neuroscience research in French universities.

  17. A Theory of Cramer-Rao Bounds for Constrained Parametric Models

    Science.gov (United States)

    2010-01-01

    1980. [65] M. Spivak , Calculus on Manifolds. Reading, MA: Addison-Wesley, 1965. [66] Petre Stoica, Thomas L. Marzetta, “Parameter estimation problems...multivariable calculus and, specifically, the use of the implicit function theorem. The reward for this approach will be a seamless presentation of statistical...inference involving the constrained Cramér-Rao bound. From the perspective of multivariable calculus , the constraint f (θ) = 0 effec- tively restricts

  18. Finding Robust Assailant Using Optimization Functions (FiRAO-PG in Wireless Sensor Network

    Directory of Open Access Journals (Sweden)

    Piyush Kumar Shukla

    2015-01-01

    Full Text Available Wireless sensor network consists of hundreds or thousands of low cost, low power, and self-organizing tiny sensor nodes that are deployed within the sensor network. Sensor network is susceptible to physical attacks due to deprived power and restricted resource capability and is exposed to external environment for transmitting and receiving data. Node capture attack is one of the most menacing attack in the wireless sensor network and may be physically captured by an adversary for extracting confidential information regarding cryptographic keys, node’s unique id, and so forth, from its memory to eliminate the confidentiality and integrity of the wireless links. Node capture attack suffers from severe security breach and tremendous network cost. We propose an empirically designed multiple objectives node capture attack algorithm based on optimization functions as an effective solution against the attacking efficiency of node capture attack. Finding robust assailant optimization-particle swarm optimization and genetic algorithm (FiRAO-PG consists of multiple objectives: maximum node participation, maximum key participation, and minimum resource expenditure to find optimal nodes using PSO and GA. It will leverage a comprehensive tool to destroy maximum portion of the network realizing cost-effectiveness and higher attacking efficiency. The simulation results manifest that FiRAO-PG can provide higher fraction of compromised traffic than matrix algorithm (MA so the attacking efficiency of FiRAO-PG is higher.

  19. Rao Quan Feasibility Study - Phase 1: Toxic Substances and Contamination (Final Report)

    Energy Technology Data Exchange (ETDEWEB)

    Berge, Dag; Knutzen, Jon

    1997-12-31

    Due to wartime activity in the Khe Sanh area, it was expected that damming of the river Rao Quan could wash out diffuse pollutants from the ground and from possible military dump sites. As discussed in this report, the rivers Rao Quan, Khe Nghi and Quang Tri contain relatively soft water. The buffer capacity against acidification is good. The sulphate concentration is low. The water will not be aggressive against concrete. The maximum particulate content in the wet season is low. The nutrient content of the rivers is relatively low. The phosphorus content correlated well with the turbidity, which indicates that the phosphorus is bound to particles. Khe Nghi has significantly higher nitrogen content than the other rivers, which may indicate some slight impact from animal husbandry. However, there was no eutrophication. The content of heavy metals is low and indicates no pollution from the military activities in the area. The water is well suited for irrigation. There was no indication from the analysed fish , the river sediments from Rao Quan or the top soil of the rice fields of any significant dioxin contamination. The content was similar to normal back ground levels caused by diffuse atmospheric fallout. The herbicide Agent Orange in 1962-1975 was applied mostly in the southernmost part of the country and contamination from it in the Quang Tri Province is not expected. 13 refs., 4 figs., 4 tabs.

  20. Rao-Blackwellised粒子滤波SLAM的一致性研究%Consistency of Simultaneous Localization and Map Building (SLAM)with Rao-Blackwellised Particle Filter

    Institute of Scientific and Technical Information of China (English)

    郭剑辉; 赵春霞; 陆建峰; 康亮

    2008-01-01

    Rao-Blackwellised粒子滤波SLAM (RBPF SLAM)算法的复杂度与特征个数呈线性关系,对于大规模SLAM有明显的计算优势,但是该算法不能长时间满足一致性要求,必须进行改进.采用归一化估计方差NEES对算法的一致性进行了分析,得出粒子耗尽是造成算法不一致的原因,并分别采用辅助粒子滤波及正则粒子滤波对算法进行改进,以得到一致的RBPF SLAM.最后,通过大量的Monte-Carlo仿真实验,验证了方法的有效性.

  1. Vergleich therapeutischer Effekte von Laserakupunktur und medikamenteller Therapie bei der COB (RAO) des Pferdes

    OpenAIRE

    Reitz, Astrid geb. Geisler

    2006-01-01

    Das Ziel der vorliegenden Arbeit war der Vergleich der Wirksamkeit der Laserakupunktur bei der Behandlung der COB/RAO beim Pferd mit der medikamentellen Therapie. Die Effektivität der medikamentellen Kombinationstherapie ist vielfach belegt und dient als Positivkontrolle. Insgesamt 60 Pferde mit COB wurden zwischen November 2001 und Mai 2005 stationär in der Klinik für Pferde mit Lehrschmiede, Innere Medizin, der Justus-Liebig-Universität Gießen aufgenommen und randomisiert in zwei Therapi...

  2. Fisher Information and the Quantum Cramér-Rao Sensitivity Limit of Continuous Measurements

    DEFF Research Database (Denmark)

    Gammelmark, Søren; Mølmer, Klaus

    2014-01-01

    Precision measurements with quantum systems rely on our ability to trace the differences between experimental signals to variations in unknown physical parameters. In this Letter we derive the Fisher information and the ensuing Cramér-Rao sensitivity limit for parameter estimation by continuous...... measurements on an open quantum system. We illustrate our theory by its application to resonance fluorescence from a laser-driven two-state atom; we show that photon counting and homodyne detection records yield different sensitivity to the atomic parameters, while none of them exceed our general result....

  3. Cramer-Rao bound of joint estimation of target location and velocity for coherent MIMO radar

    Institute of Scientific and Technical Information of China (English)

    Peilin Sun; Jun Tang; Shuang Wan

    2014-01-01

    The optimal estimation performance of target parame-ters is studied. First, the general form of Cramer-Rao bound (CRB) for joint estimation of target location and velocity is derived for co-herent multiple input multiple output (MIMO) radars. To gain some insight into the behavior of the CRB, the CRB with a set of given orthogonal waveforms is studied as a specific case. Second, a maximum likelihood (ML) estimation algorithm is proposed. The mean square error (MSE) of the ML estimation of target location and velocity is obtained by Monte Carlo simulation and it ap-proaches CRB in the high signal-to-noise ratio (SNR) region.

  4. CRAMER-RAO BOUNDS FOR PARAMETER ESTIMATION OF PHASE-CODING SIGNALS

    Institute of Scientific and Technical Information of China (English)

    Huang Chunlin; Jiang Wengli; Zhou Yiyu

    2005-01-01

    In this paper, Cramer-Rao Bound (CRB) is derived from phase-coding signal with additive white noise, where three important parameters are focused on: carrier frequency, chip width and amplitude. Simplified and close form expressions of CRB are obtained through complicated derivation, and then are applied to evaluate the performance of the cyclic estimator.The results are accurate enough and serve well as benchmark for evaluating the performance of parameter estimation method. Numerical simulations illustrate the accuracy and applicability of the derived CRB.

  5. Analysis and interpretation of the Cramer-Rao lower-bound in astrometry: One dimensional case

    CERN Document Server

    Mendez, Rene; Lobos, Rodrigo

    2013-01-01

    In this paper we explore the maximum precision attainable in the location of a point source imaged by a pixel array detector in the presence of a background, as a function of the detector properties. For this we use a well-known result from parametric estimation theory, the so-called Cramer-Rao lower bound. We develop the expressions in the 1-dimensional case of a linear array detector in which the only unknown parameter is the source position. If the object is oversampled by the detector, analytical expressions can be obtained for the Cramer-Rao limit that can be readily used to estimate the limiting precision of an imaging system, and which are very useful for experimental (detector) design, observational planning, or performance estimation of data analysis software: In particular, we demonstrate that for background-dominated sources, the maximum astrometric precision goes as $B/F^2$, where $B$ is the background in one pixel, and $F$ is the total flux of the source, while when the background is negligible, ...

  6. Do fast stellar centroiding methods saturate the Cram\\'{e}r-Rao lower bound?

    CERN Document Server

    Vakili, Mohammadjavad

    2016-01-01

    One of the most demanding tasks in astronomical image processing---in terms of precision---is the centroiding of stars. Upcoming large surveys are going to take images of billions of point sources, including many faint stars, with short exposure times. Real-time estimation of the centroids of stars is crucial for real-time PSF estimation, and maximal precision is required for measurements of proper motion. The fundamental Cram\\'{e}r-Rao lower bound sets a limit on the root-mean-squared-error achievable by optimal estimators. In this work, we aim to compare the performance of various centroiding methods, in terms of saturating the bound, when they are applied to relatively low signal-to-noise ratio unsaturated stars assuming zero-mean constant Gaussian noise. In order to make this comparison, we present the ratio of the root-mean-squared-errors of these estimators to their corresponding Cram\\'{e}r-Rao bound as a function of the signal-to-noise ratio and the full-width at half-maximum of faint stars. We discuss...

  7. Cramer-Rao Bounds and Coherence Performance Analysis for Next Generation Radar with Pulse Trains

    Directory of Open Access Journals (Sweden)

    Ning Zhang

    2013-04-01

    Full Text Available We study the Cramer-Rao bounds of parameter estimation and coherence performance for the next generation radar (NGR. In order to enhance the performance of NGR, the signal model of NGR with master-slave architecture based on a single pulse is extended to the case of pulse trains, in which multiple pulses are emitted from all sensors and then integrated spatially and temporally in a unique master sensor. For the MIMO mode of NGR where orthogonal waveforms are emitted, we derive the closed-form Cramer-Rao bound (CRB for the estimates of generalized coherence parameters (GCPs, including the time delay differences, total phase differences and Doppler frequencies with respect to different sensors. For the coherent mode of NGR where the coherent waveforms are emitted after pre-compensation using the estimates of GCPs, we develop a performance bound of signal-to-noise ratio (SNR gain for NGR based on the aforementioned CRBs, taking all the estimation errors into consideration. It is shown that greatly improved estimation accuracy and coherence performance can be obtained with pulse trains employed in NGR. Numerical examples demonstrate the validity of the theoretical results.

  8. An Example of an Improvable Rao-Blackwell Improvement, Inefficient Maximum Likelihood Estimator, and Unbiased Generalized Bayes Estimator.

    Science.gov (United States)

    Galili, Tal; Meilijson, Isaac

    2016-01-02

    The Rao-Blackwell theorem offers a procedure for converting a crude unbiased estimator of a parameter θ into a "better" one, in fact unique and optimal if the improvement is based on a minimal sufficient statistic that is complete. In contrast, behind every minimal sufficient statistic that is not complete, there is an improvable Rao-Blackwell improvement. This is illustrated via a simple example based on the uniform distribution, in which a rather natural Rao-Blackwell improvement is uniformly improvable. Furthermore, in this example the maximum likelihood estimator is inefficient, and an unbiased generalized Bayes estimator performs exceptionally well. Counterexamples of this sort can be useful didactic tools for explaining the true nature of a methodology and possible consequences when some of the assumptions are violated. [Received December 2014. Revised September 2015.].

  9. 平方根容积Rao-Blackwillised粒子滤波SLAM算法%SLAM with Square-root Cubature Rao-Blackwillised Particle Filter

    Institute of Scientific and Technical Information of China (English)

    宋宇; 李庆玲; 康轶非; 闫德立

    2014-01-01

    面向大尺度环境中的移动机器人同时定位与地图构建(Simultaneous localization and mapping,SLAM)问题,提出平方根容积Rao-Blackwillised粒子滤波SLAM算法.算法主要特点在于:1)采用容积律计算SLAM中的非线性函数高斯权重积分,达到减小SLAM非线性模型线性化误差、提高SLAM精度的目的;2)在SLAM中直接传播误差协方差矩阵的平方根因子,避免了耗费时间的协方差矩阵分解与重构过程,提高了SLAM计算效率.通过仿真、实验将提出的SLAM算法与FastSLAM2.0、UFastSLAM两种算法进行对比,结果表明本文算法在SLAM性能上优于另两者.

  10. NEGOSIASI ISLAM KULTUR DALAM GERAKAN PADERI RAO DI SUMATERA TENGAH (1820-1833

    Directory of Open Access Journals (Sweden)

    Safwan Rozi

    2017-02-01

    Full Text Available Gerakan Paderi di Sumatera Tengah adalah revolusi intelektual dan sebuah batas sejarah yang menentukan perkembangan Minangkabau. Di dalamnya ada elemen-elemen fanatisme, kesalehan, resistensi terhadap kolonialisme, dan juga negosiasi budaya. Tulisan ini mengkaji tipologi gerakan keagamaan dalam gerakan Paderi melalui pendekatan sejarah sosial. Pembahasan difokuskan pada sejarah gerakan Paderi, dialektika agama dan budaya lokal, serta negosiasi kaum adat dan kaum agama dalam gerakan Paderi di tanah Rao. Negosiasi adat dan Islam tersebut terjadi pada tahun 1833. Golongan adat dan golongan Paderi bersatu bahu-membahu melawan Belanda. Persatuan bukan hanya dalam bentuk kekuatan saja tapi juga dalam bentuk visi yang kemudian dikenal dengan konsensus Plakat Puncak Pato di Tabek Patah Tanah Datar yang berbunyi “Adat basandi Syarak, Syarak basandi Kitabullah dan syarak mangato adat mamakai”. Ikrar ini mengikat golongan adat dan golongan Paderi yang mengakui eksistensi adat dan eksistensi agama Islam dalam pranata sosial. Kesepakatan tersebut kemudian memperkokoh posisi kelembagaan agama dalam masyarakat Minang.

  11. Cramér-Rao analysis of orientation estimation: influence of target model uncertainties

    Science.gov (United States)

    Gerwe, David R.; Hill, Jennifer L.; Idell, Paul S.

    2003-05-01

    We explore the use of Cramér-Rao bound calculations for predicting fundamental limits on the accuracy with which target characteristics can be determined by using imaging sensors. In particular, estimation of satellite orientation from high-resolution sensors is examined. The analysis role that such bounds provide for sensor/experiment design, operation, and upgrade is discussed. Emphasis is placed on the importance of including all relevant target/sensor uncertainties in the analysis. Computer simulations are performed that illustrate that uncertainties in target features (e.g., shape, reflectance, and relative orientation) have a significant impact on the bounds and provide considerable insight as to how details of the three-dimensional target structure may influence the estimation process. The simulations also address the impact that a priori information has on the bounds.

  12. Gating Techniques for Rao-Blackwellized Monte Carlo Data Association Filter

    Directory of Open Access Journals (Sweden)

    Yazhao Wang

    2014-01-01

    Full Text Available This paper studies the Rao-Blackwellized Monte Carlo data association (RBMCDA filter for multiple target tracking. The elliptical gating strategies are redesigned and incorporated into the framework of the RBMCDA filter. The obvious benefit is the reduction of the time cost because the data association procedure can be carried out with less validated measurements. In addition, the overlapped parts of the neighboring validation regions are divided into several separated subregions according to the possible origins of the validated measurements. In these subregions, the measurement uncertainties can be taken into account more reasonably than those of the simple elliptical gate. This would help to achieve higher tracking ability of the RBMCDA algorithm by a better association prior approximation. Simulation results are provided to show the effectiveness of the proposed gating techniques.

  13. Cramer-Rao lower bound on range error for LADARs with Geiger-mode avalanche photodiodes.

    Science.gov (United States)

    Johnson, Steven E

    2010-08-20

    The Cramer-Rao lower bound (CRLB) on range error is calculated for laser detection and ranging (LADAR) systems using Geiger-mode avalanche photodiodes (GMAPDs) to detect reflected laser pulses. For the cases considered, the GMAPD range error CRLB is greater than the CRLB for a photon-counting device. It is also shown that the GMAPD range error CRLB is minimized when the mean energy in the received laser pulse is finite. Given typical LADAR system parameters, a Gaussian-envelope received pulse, and a noise detection rate of less than 4 MHz, the GMAPD range error CRLB is minimized when the quantum efficiency times the mean number of received laser pulse photons is between 2.2 and 2.3.

  14. Quantum metrology beyond the quantum Cramér-Rao theorem

    Science.gov (United States)

    Seveso, Luigi; Rossi, Matteo A. C.; Paris, Matteo G. A.

    2017-01-01

    A usual assumption in quantum estimation is that the unknown parameter labels the possible states of the system, while it influences neither the sample space of outcomes nor the measurement aimed at extracting information on the parameter itself. This assumption is crucial to prove the quantum Cramér-Rao theorem and to introduce the quantum Fisher information as an upper bound to the Fisher information of any possible measurement. However, there are relevant estimation problems where this assumption does not hold and an alternative approach should be developed to find the genuine ultimate bound to precision of quantum measurements. We investigate physical situations where there is an intrinsic dependence of the measurement strategy on the parameter and find that quantum-enhanced measurements may be more precise than previously thought.

  15. Cram\\'er-Rao Bound for Localization with A Priori Knowledge on Biased Range Measurements

    CERN Document Server

    Wang, Tao

    2011-01-01

    This paper derives a general expression for the Cram\\'er-Rao bound (CRB) of wireless localization algorithms using range measurements subject to bias corruption. Specifically, the a priori knowledge about which range measurements are biased, and the probability density functions (PDF) of the biases are assumed to be available. For each range measurement, the error due to estimating the time-of-arrival of the detected signal is modeled as a Gaussian distributed random variable with zero mean and known variance. In general, the derived CRB expression can be evaluated numerically. An approximate CRB expression is also derived when the bias PDF is very informative. Using these CRB expressions, we study the impact of the bias distribution on the mean square error (MSE) bound corresponding to the CRB. The analysis is corroborated by numerical experiments.

  16. MUESTREO DE RESPUESTA ALEATORIZADAS CON PROBABILIDADES DESIGUALES: EL ESTIMADOR DE RAO-HARTLEY-COCHRAN

    Directory of Open Access Journals (Sweden)

    Víctor H. Soberanis Cruz1-, Jaime D. Cuevas Domínguez

    2010-09-01

    Full Text Available The technique of Randomized Response has been introduced to reduce the risk of evasive answer or no-response in survey samplings of sensitive issues to estimate the total of individuals with that sensitive characteristic. We also know that highly efficient strategies of estimation require strong auxiliary information. Hence, in this article we obtain and compare two estimators: The Rao-Hartley-Cochran (RHC estimator with Warner´s model and the RHC estimator with Greenberg´s model, both in a finite population setting.We will show via simulation that , the RHC -estimator in Warner´s model is less efficient than , the RHC -estimator in Greenberg’s modelK

  17. From Indianness to Humanness: Raja Rao and the Politics of Truth

    Directory of Open Access Journals (Sweden)

    Stefano Mercanti

    2015-07-01

    Full Text Available Abstract – Raja Rao is not merely a metaphysical writer, as many scholars of the first Commonwealth generation depict him, but rather a much more complex one whose literary dimensions transcend the commonplace essentializing ‘Hinduness’ conveyed by many critics over three decades. I offer instead an amplification of Rao’s idea of India by framing his novels in a cross-cultural space which evolves during the course of his entire oeuvre on both philosophical and political levels. This dynamic ambivalence has its foremost predecessor in Mahatma Gandhi’s politico-spiritual legacy, Satyagraha (‘the force of Truth’ which becomes the centripetal and cohesive force of Raja Rao’s fiction.

  18. Correlation and discriminant analysis between clinical, endoscopic, thoracic X-ray and bronchoalveolar lavage fluid cytology scores, for staging horses with recurrent airway obstruction (RAO).

    Science.gov (United States)

    Tilley, P; Sales Luis, J P; Branco Ferreira, M

    2012-10-01

    As recurrent airway obstruction (RAO) is progressive and as medical history is frequently unknown by owners, it's important to suggest a score model to characterize RAO stages for a more accurate diagnosis and treatment. The authors correlated clinical (CS), endoscopic (ES), thoracic X-ray (XRS) and bronchoalveolar lavage fluid (BALFS) scores in horses with RAO, in an attempt to establish relevance of each factor's contribution for the characterization of RAO stages and to suggest a staging method. Thirty horses with RAO and ten healthy controls were studied. Pearson correlation coefficients were determined between CS, ES, XRS and BALFS. Only significant correlation coefficients (>0.60) were considered. One way variance analyses were used to compare the two groups. A discriminant analysis model was adjusted on the RAO staging method suggested. There was a significant correlation coefficient between the CS cough, nostril flare and abdominal lift, all the mucus ES (0.61-0.84), the XRS interstitial pattern, bronchial radiopacity and thickening and tracheal thickening (0.67-0.78) and the BALFS neutrophil percentages (0.63-0.84). These variables (e.g., cough) which presented a significant correlation coefficient were considered relevant and chosen for a score model to characterize RAO stages. The ten healthy controls were attributed stage 0 and the 30 RAO horses were attributed stages 1 (4 horses), 2 (7 horses), 3 (10 horses) and 4 (9 horses). There was also a significant correlation coefficient between all the relevant variables and the RAO stage (0.61-0.89). Furthermore, discriminant analysis of the RAO staging method showed 92.5% of original grouped cases and 85.0% of cross-validated grouped cases correctly classified, having confirmed major contribution of the same variables that had significant correlation coefficients. Even though further confirmation by lung functional testing is desirable, the significant correlation between relevant variables and RAO stage and

  19. Perturbed soliton excitations of Rao-dust Alfvén waves in magnetized dusty plasmas

    Energy Technology Data Exchange (ETDEWEB)

    Kavitha, L., E-mail: louiskavitha@yahoo.co.in [Department of Physics, School of Basic and Applied Sciences, Central University of Tamil Nadu, Thiruvarur 610 101 (India); The Abdus Salam International Centre for Theoretical Physics, Trieste (Italy); Lavanya, C.; Senthil Kumar, V. [Department of Physics, Periyar University, Salem, Tamil Nadu 636 011 (India); Gopi, D. [Department of Chemistry, Periyar University, Salem 636 011 (India); Center for Nanoscience and Nanotechnology, Periyar University, Salem, Tamil Nadu 636 011 (India); Pasqua, A. [Department of Physics, University of Trieste, Trieste (Italy)

    2016-04-15

    We investigate the propagation dynamics of the perturbed soliton excitations in a three component fully ionized dusty magnetoplasma consisting of electrons, ions, and heavy charged dust particulates. We derive the governing equation of motion for the two dimensional Rao-dust magnetohydrodynamic (R-D-MHD) wave by employing the inertialess electron equation of motion, inertial ion equation of motion, the continuity equations in a plasma with immobile charged dust grains, together with the Maxwell's equations, by assuming quasi neutrality and neglecting the displacement current in Ampere's law. Furthermore, we assume the massive dust particles are practically immobile since we are interested in timescales much shorter than the dusty plasma period, thereby neglecting any damping of the modes due to the grain charge fluctuations. We invoke the reductive perturbation method to represent the governing dynamics by a perturbed cubic nonlinear Schrödinger (pCNLS) equation. We solve the pCNLS, along the lines of Kodama-Ablowitz multiple scale nonlinear perturbation technique and explored the R-D-MHD waves as solitary wave excitations in a magnetized dusty plasma. Since Alfvén waves play an important role in energy transport in driving field-aligned currents, particle acceleration and heating, solar flares, and the solar wind, this representation of R-D-MHD waves as soliton excitations may have extensive applications to study the lower part of the earth's ionosphere.

  20. Fractional Brownian Motion and Geodesic Rao Distance for Bone X-ray Image Characterization.

    Science.gov (United States)

    El Hassouni, Mohammed; Tafraouti, Abdessamad; Toumi, Hechmi; Lespessailles, Eric; Jennane, Rachid

    2016-10-19

    Osteoporosis diagnosis has attracted particular attention in recent decades. Textured images from the microarchitecture of osteoporotic and healthy subjects show a high degree of similarity, increasing the difficulty of classifying such textures. Thus, the evaluation of osteoporosis from bone X-ray images presents a major challenge for pattern recognition and medical applications. The purpose of this paper is to use the fractional Brownian motion (fBm) model and the Probability Density Function (PDF) of its increments to compute a similarity measure with the Rao geodesic distance to classify trabecular bone X-ray images. When evaluated on synthetic fBm images (test vectors) with the well-known Hurst parameter H, the proposed method met our expectations in that a good classification of the synthetic images was achieved. A clinical study was conducted on textured bone X-ray images from two different female populations of osteoporotic patients (fracture cases) and control subjects. Using the proposed method, an Area Under Curve (AUC) rate of 97% was achieved.

  1. Cram\\'er-Rao Bounds for Polynomial Signal Estimation using Sensors with AR(1) Drift

    CERN Document Server

    Kar, Swarnendu; Palaniswami, Marimuthu

    2012-01-01

    We seek to characterize the estimation performance of a sensor network where the individual sensors exhibit the phenomenon of drift, i.e., a gradual change of the bias. Though estimation in the presence of random errors has been extensively studied in the literature, the loss of estimation performance due to systematic errors like drift have rarely been looked into. In this paper, we derive closed-form Fisher Information matrix and subsequently Cram\\'er-Rao bounds (upto reasonable approximation) for the estimation accuracy of drift-corrupted signals. We assume a polynomial time-series as the representative signal and an autoregressive process model for the drift. When the Markov parameter for drift \\rho<1, we show that the first-order effect of drift is asymptotically equivalent to scaling the measurement noise by an appropriate factor. For \\rho=1, i.e., when the drift is non-stationary, we show that the constant part of a signal can only be estimated inconsistently (non-zero asymptotic variance). Practica...

  2. Novel Mobile Robot Simultaneous Localization and Mapping Using Rao-Blackwellised Particle Filter

    Directory of Open Access Journals (Sweden)

    Hong Bingrong

    2008-11-01

    Full Text Available This paper presents the novel method of mobile robot simultaneous localization and mapping (SLAM, which is implemented by using the Rao-Blackwellised particle filter (RBPF for monocular vision-based autonomous robot in unknown indoor environment. The particle filter is combined with unscented Kalman filter (UKF to extending the path posterior by sampling new poses that integrate the current observation. The landmark position estimation and update is implemented through the unscented transform (UT. Furthermore, the number of resampling steps is determined adaptively, which seriously reduces the particle depletion problem. Monocular CCD camera mounted on the robot tracks the 3D natural point landmarks, which are structured with matching image feature pairs extracted through Scale Invariant Feature Transform (SIFT. The matching for multi-dimension SIFT features which are highly distinctive due to a special descriptor is implemented with a KDTree in the time cost of O(log2N. Experiments on the robot Pioneer3 in our real indoor environment show that our method is of high precision and stability.

  3. Cosmological parameter constraints via Gibbs sampling and the Blackwell-Rao estimator

    Science.gov (United States)

    Chu, I.-Wen Mike

    We study the Blackwell-Rao (BR) estimator of the probability distribution of the angular power spectrum, P ( C [cursive l] | d ), generated via Gibbs sampling of the Cosmic Microwave Background (CMB) data. From simulated samples of full-sky no-noise CMB maps, we find the estimator to be very fast and also highly accurate. We also find that the number of samples required for convergence of the BR estimate rises rapidly with increasing [cursive l], at least at low [cursive l]. Our existing sample chains as applied to the Wilkinson Microwave Anistropy Probe (WMAP) data are only long enough to achieve convergence at [cursive l] [Special characters omitted.] 40. In comparison with P ( C [cursive l] | d ) as reported by the WMAP team we find significant differences at these low [cursive l] values. These differences lead to up to ~ 0.5 s shifts in the estimates of parameters in a 7-parameter LCDM model with non-zero d n s /d ln k , the running in the spectral index. Fixing d n s /dln k = 0 makes these shifts much less significant. Unlike existing analytic approximations, the BR estimator can be straightforwardly extended for the case of power spectra from correlated fields, such as temperature and polarization. We discuss challenges to extending the procedure to higher [cursive l] and provide some solutions.

  4. The Cramer-Rao Bound and DMT Signal Optimisation for the Identification of a Wiener-Type Model

    Directory of Open Access Journals (Sweden)

    H. Koeppl

    2004-09-01

    Full Text Available In linear system identification, optimal excitation signals can be determined using the Cramer-Rao bound. This problem has not been thoroughly studied for the nonlinear case. In this work, the Cramer-Rao bound for a factorisable Volterra model is derived. The analytical result is supported with simulation examples. The bound is then used to find the optimal excitation signal out of the class of discrete multitone signals. As the model is nonlinear in the parameters, the bound depends on the model parameters themselves. On this basis, a three-step identification procedure is proposed. To illustrate the procedure, signal optimisation is explicitly performed for a third-order nonlinear model. Methods of nonlinear optimisation are applied for the parameter estimation of the model. As a baseline, the problem of optimal discrete multitone signals for linear FIR filter estimation is reviewed.

  5. On Rao Jiong’s theory of the Zhuan-zhu%论饶炯的加符转注说

    Institute of Scientific and Technical Information of China (English)

    郑伟

    2012-01-01

      六书之中,人们对转注的争议最大,众说纷纭。晚清学者饶炯在转注研究中独树一帜,创造性地提出了加符转注说,认为转注的实质是本字通过加形符或声符来实现文字孳乳的造字过程。他以王筠的分别文、累增字理论为基础,总结出了六种转注类型。转注字与被注字意义相同是其基本特征。同时还对所加形符和声符进行了系统的分类。他的学说对后世影响很大,当代学者多受其启发。不过,饶炯在加声符转注字中往往忽略了转注字与被注字的声音一致原则,还不够完善。%  The notion of the Zhuan-zhu with various interpretations has caused the most controversy in the study of the Liu-shu in which Rao Jiong had creatively advanced a new additional symbol theory. Rao argued that the essence of the Zhuan-zhu is a process in which an original character turns into a new one through adding certain pictographic and phonetic symbols. Rao had summed up six Zhuan-zhu types based on the character’s accumulation theory by Wang Yun and their common feature is the constant meaning for the original character and the new one. Rao also had systematically classified those pictographic and phonetic symbols. Rao’s theory produced a great in-fluence in later ages and many contemporary scholars agree with him. Howev-er, Rao Jiong who had some unsuccessful points tended to ignore some iden-tical principle.

  6. A comparison of likelihood ratio tests and Rao's score test for three separable covariance matrix structures.

    Science.gov (United States)

    Filipiak, Katarzyna; Klein, Daniel; Roy, Anuradha

    2017-01-01

    The problem of testing the separability of a covariance matrix against an unstructured variance-covariance matrix is studied in the context of multivariate repeated measures data using Rao's score test (RST). The RST statistic is developed with the first component of the separable structure as a first-order autoregressive (AR(1)) correlation matrix or an unstructured (UN) covariance matrix under the assumption of multivariate normality. It is shown that the distribution of the RST statistic under the null hypothesis of any separability does not depend on the true values of the mean or the unstructured components of the separable structure. A significant advantage of the RST is that it can be performed for small samples, even smaller than the dimension of the data, where the likelihood ratio test (LRT) cannot be used, and it outperforms the standard LRT in a number of contexts. Monte Carlo simulations are then used to study the comparative behavior of the null distribution of the RST statistic, as well as that of the LRT statistic, in terms of sample size considerations, and for the estimation of the empirical percentiles. Our findings are compared with existing results where the first component of the separable structure is a compound symmetry (CS) correlation matrix. It is also shown by simulations that the empirical null distribution of the RST statistic converges faster than the empirical null distribution of the LRT statistic to the limiting χ(2) distribution. The tests are implemented on a real dataset from medical studies. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  7. 我的父亲饶华%My Father Rao Hua

    Institute of Scientific and Technical Information of China (English)

    饶芃子

    2014-01-01

    饶华是韩山师范学院的杰出校友之一,是职业革命家。该文系作为其子女的作者,忆述其所从事的革命活动的历程,从左翼文艺运动的积极参与者,到受派回潮汕发动、组织左翼文艺运动;从抗战时期受密派到新组建第四战区北江挺进纵队负责统战工作,到撤回粤、滇、桂、越南等地从事地下革命活动;从回国后在新成立的中共滇东南地区工委、滇桂黔边军政任委职,到迎接解放大军入滇,解放后在云南军政、教育、宣传、出版、社科等部门任要职等传奇经历,为口述史的重要传记资料。%Rao Hua, one of the outstanding alumni of Hanshan Normal University, was a professional rev-olutionary. The author of this paper, Rao’s daughter recalled the experiences of his revolutionary activities:from an activist of Left-wing Literary Movement to an organizer in Chaoshan area; from a secretly appointed man in charge of united front work of Beijiang Advancing Column to an underground revolutionary activist with-drawing back to Yunnan-Guizhou-Guangxi-Vietnam Border Regions;from being a working committee mem-ber of South Eastern Yunnan District of newly-founded China to an official of important posts in such depart-ments as military, political, educational, propagandistic and publishing etc. These are important biographical data for oral history.

  8. Millipixel scale landmark location in images: The optics, the imaging system, and the Cramer-Rao bound on performance

    Science.gov (United States)

    Gutierrez, Jose Alejandro

    2005-11-01

    Landmark location uncertainty in digital images, which is extensively used in high precision photogrammetry and machine vision applications, consist of the error measurement when locating the position of a specific image feature. Landmark location uncertainty has been previously described in the literature for particular landmark designs within the scope of specific applications and using simplified models. For the first time, a general framework to determine landmark location uncertainty in presented in this work. The framework includes the determination of the performance floor by means of the Cramer-Rao Lower Bound (CRLB). The methodology presented, considers the complete physical model of image formation, including 6 degree of freedom, landmark to camera geometry, diffraction, defocus, lens distortion, gray-scale, pixel geometry, and pixel sensitive area. With the framework developed, an analysis tool was created to model true engineering cases to allow the investigator to predict performance for any configuration of landmark, camera, imager and estimator used. This tool includes the determination of the CRLB performance floor for the configuration used. Additionally, this work also pioneers novel landmark location estimation algorithms with confidence intervals at tens of milli-pixel level, which not only perform more than 10 times better than existing estimation algorithms but also has been experimentally verified. The Cramer-Rao Lower Bound methodology introduced in the present work establishes a theoretical statistical minimum limit on the landmark location uncertainty. Knowledge of this bound provides the means to evaluate the actual performance of both existing and future landmark location estimators. The approach presented in this work includes a mix of analysis, where feasible, and numerical work where required, including numerically deriving the partial derivatives needed to compute statistical distributions and the Cramer-Rao Lower Bound.

  9. Particle filters for the magnetoencephalography inverse problem: increasing the efficiency through a semi-analytic approach (Rao-Blackwellization)

    Energy Technology Data Exchange (ETDEWEB)

    Sorrentino, A [Dipartimento di Fisica, Universita di Genova (Italy); Pascarella, A; Campi, C [Dipartimento di Matematica, Universita di Genova (Italy); Piana, M [Dipartimento di Informatica, Universita di Verona (Italy)], E-mail: sorrentino@fisica.unige.it

    2008-07-15

    We consider the problem of dynamically estimating the parameters of point-like neural sources from magnetoencephalography data. Since the problem is non-linear, we apply the sequential Monte Carlo algorithms known as particle filters for solving the Bayesian filtering problem. We suggest that the linear dependence of the data on a subset of the parameters allows the analytic computation of the posterior density for these parameters, i.e. Rao-Blackwellization; this considerably improves the accuracy of the method and its statistical efficiency.

  10. Differential Gene Expression Profiles and Selected Cytokine Protein Analysis of Mediastinal Lymph Nodes of Horses with Chronic Recurrent Airway Obstruction (RAO Support an Interleukin-17 Immune Response.

    Directory of Open Access Journals (Sweden)

    Alexandra Korn

    Full Text Available Recurrent airway obstruction (RAO is a pulmonary inflammatory condition that afflicts certain mature horses exposed to organic dust particulates in hay. Its clinical and pathological features, manifested by reversible bronchoconstriction, excessive mucus production and airway neutrophilia, resemble the pulmonary alterations that occur in agricultural workers with occupational asthma. The immunological basis of RAO remains uncertain although its chronicity, its localization to a mucosal surface and its domination by a neutrophilic, non-septic inflammatory response, suggest involvement of Interleukin-17 (IL-17. We examined global gene expression profiles in mediastinal (pulmonary-draining lymph nodes isolated from RAO-affected and control horses. Differential expression of > 200 genes, coupled with network analysis, supports an IL-17 response centered about NF-κB. Immunohistochemical analysis of mediastinal lymph node sections demonstrated increased IL-17 staining intensity in diseased horses. This result, along with the finding of increased IL-17 concentrations in lymph node homogenates from RAO-affected horses (P = 0.1 and a down-regulation of IL-4 gene and protein expression, provides additional evidence of the involvement of IL-17 in the chronic stages of RAO. Additional investigations are needed to ascertain the cellular source of IL-17 in this equine model of occupational asthma. Understanding the immunopathogenesis of this disorder likely will enhance the development of therapeutic interventions beneficial to human and animal pulmonary health.

  11. Parameter estimation of IMR waves from non-spinning binary black-holes, beyond the Cramer-Rao Lower Bound

    CERN Document Server

    Vitale, Salvatore

    2010-01-01

    In this paper we use a new methodology to calculate analytically the error for a maximum likelihood estimate (MLE) of physical parameters from Gravitational Wave (GW) signals, by applying it to IMR waves from non-spinning binary system. While the existing literature focuses on using the Cramer Rao Lower bound. (CRLB) as a mean to approximate the errors for large signal to noise ratios, taking into account only the fist derivative of the signal, we consider also the higher order derivatives, obtaining an improved estimation of parameters' errors. We see how the bias is in general non negligible for high mass systems (200 solar masses and above), due to the nonlinear dipendence of the signal on the parameters, where it can become the most important contributor to the parameters' errors. This new feature will require numerical injections to be proved true.

  12. An enhanced Cramér-Rao bound weighted method for attitude accuracy improvement of a star tracker.

    Science.gov (United States)

    Zhang, Jun; Wang, Jian

    2016-06-01

    This study presents a non-average weighted method for the QUEST (QUaternion ESTimator) algorithm, using the inverse value of root sum square of Cramér-Rao bound and focal length drift errors of the tracking star as weight, to enhance the pointing accuracy of a star tracker. In this technique, the stars that are brighter, or at low angular rate, or located towards the center of star field will be given a higher weight in the attitude determination process, and thus, the accuracy is readily improved. Simulations and ground test results demonstrate that, compared to the average weighted method, it can reduce the attitude uncertainty by 10%-20%, which is confirmed particularly for the sky zones with non-uniform distribution of stars. Moreover, by using the iteratively weighted center of gravity algorithm as the newly centroiding method for the QUEST algorithm, the current attitude uncertainty can be further reduced to 44% with a negligible additional computing load.

  13. Parasitic Ulcerous Caseous Gastroesophagitis Associated with Rameshwarotrema uterocrescens Rao, 1975 (Digenea: Pronocephalidae) in a Juvenile Green Turtle [Chelonia mydas, Linnaeus 1758 (Testudines: Cheloniidae)]: A Case Report.

    Science.gov (United States)

    Ribeiro, Rachel B; Jerdy, Hassan; Wernek, Max R; Goldberg, Daphne W; Bianchi, Mariah; Carvalho, Eulà  Gio C Q

    2017-01-25

    Here we report a case of ulcerative caseous gastroesophagitis associated with Rameshwarotrema uterocrescens; Rao, 1975 (Digenea: Pronocephalidae) in a juvenile green turtle (Chelonia mydas) from Southern Brazil. Similar pathologies have been reported only in adult green turtles from Costa Rica. This paper presents the second report of parasitic esophagitis due R. uterocrescens and the first occurrence in juvenile green turtles along coastal Brazil.

  14. Analysis of sensor impulse response effects on Cramèr–Rao lower bounds for signal parameter estimators

    Directory of Open Access Journals (Sweden)

    Ephraim S. Gower

    2014-12-01

    Full Text Available In this study, a generic analysis of sensor impulse response effects on linearly filtered channel noise is presented to illustrate the resulting variations to the Cramèr–Rao lower bounds (CRLBs of signal parameter estimators in signal processing and communication applications. The authors start by deriving the density function of a filtered signal, which is shown to be a mixture density, and hence the exact expressions for the mean and variance. Simulation results are used to confirm the derivations, which are then used to investigate the effects of impulse response length and variance, as well as channel noise length and variance effects on the resulting CRLBs. Results indicate that for non-zero-mean channel noise and impulse responses, the resulting mean of filtered noise can be relatively large causing adverse deviations to parameter estimations. The filtered noise variance is shown to be proportional to the impulse response energy, where for long duration of signal capture the CRLB is significantly increased.

  15. Statistical resolution limit for the multidimensional harmonic retrieval model: hypothesis test and Cramér-Rao Bound approaches

    Directory of Open Access Journals (Sweden)

    El Korso Mohammed

    2011-01-01

    Full Text Available Abstract The statistical resolution limit (SRL, which is defined as the minimal separation between parameters to allow a correct resolvability, is an important statistical tool to quantify the ultimate performance for parametric estimation problems. In this article, we generalize the concept of the SRL to the multidimensional SRL (MSRL applied to the multidimensional harmonic retrieval model. In this article, we derive the SRL for the so-called multidimensional harmonic retrieval model using a generalization of the previously introduced SRL concepts that we call multidimensional SRL (MSRL. We first derive the MSRL using an hypothesis test approach. This statistical test is shown to be asymptotically an uniformly most powerful test which is the strongest optimality statement that one could expect to obtain. Second, we link the proposed asymptotic MSRL based on the hypothesis test approach to a new extension of the SRL based on the Cramér-Rao Bound approach. Thus, a closed-form expression of the asymptotic MSRL is given and analyzed in the framework of the multidimensional harmonic retrieval model. Particularly, it is proved that the optimal MSRL is obtained for equi-powered sources and/or an equi-distributed number of sensors on each multi-way array.

  16. The Real-Valued Sparse Direction of Arrival (DOA) Estimation Based on the Khatri-Rao Product.

    Science.gov (United States)

    Chen, Tao; Wu, Huanxin; Zhao, Zhongkai

    2016-05-14

    There is a problem that complex operation which leads to a heavy calculation burden is required when the direction of arrival (DOA) of a sparse signal is estimated by using the array covariance matrix. The solution of the multiple measurement vectors (MMV) model is difficult. In this paper, a real-valued sparse DOA estimation algorithm based on the Khatri-Rao (KR) product called the L₁-RVSKR is proposed. The proposed algorithm is based on the sparse representation of the array covariance matrix. The array covariance matrix is transformed to a real-valued matrix via a unitary transformation so that a real-valued sparse model is achieved. The real-valued sparse model is vectorized for transforming to a single measurement vector (SMV) model, and a new virtual overcomplete dictionary is constructed according to the KR product's property. Finally, the sparse DOA estimation is solved by utilizing the idea of a sparse representation of array covariance vectors (SRACV). The simulation results demonstrate the superior performance and the low computational complexity of the proposed algorithm.

  17. Cramer-Rao Lower Bound Evaluation for Linear Frequency Modulation Based Active Radar Networks Operating in a Rice Fading Environment

    Directory of Open Access Journals (Sweden)

    Chenguang Shi

    2016-12-01

    Full Text Available This paper investigates the joint target parameter (delay and Doppler estimation performance of linear frequency modulation (LFM-based radar networks in a Rice fading environment. The active radar networks are composed of multiple radar transmitters and multichannel receivers placed on moving platforms. First, the log-likelihood function of the received signal for a Rician target is derived, where the received signal scattered off the target comprises of dominant scatterer (DS component and weak isotropic scatterers (WIS components. Then, the analytically closed-form expressions of the Cramer-Rao lower bounds (CRLBs on the Cartesian coordinates of target position and velocity are calculated, which can be adopted as a performance metric to access the target parameter estimation accuracy for LFM-based radar network systems in a Rice fading environment. It is found that the cumulative Fisher information matrix (FIM is a linear combination of both DS component and WIS components, and it also demonstrates that the joint CRLB is a function of signal-to-noise ratio (SNR, target’s radar cross section (RCS and transmitted waveform parameters, as well as the relative geometry between the target and the radar network architectures. Finally, numerical results are provided to indicate that the joint target parameter estimation performance of active radar networks can be significantly improved with the exploitation of DS component.

  18. Cramer-Rao Lower Bound Evaluation for Linear Frequency Modulation Based Active Radar Networks Operating in a Rice Fading Environment.

    Science.gov (United States)

    Shi, Chenguang; Salous, Sana; Wang, Fei; Zhou, Jianjiang

    2016-12-06

    This paper investigates the joint target parameter (delay and Doppler) estimation performance of linear frequency modulation (LFM)-based radar networks in a Rice fading environment. The active radar networks are composed of multiple radar transmitters and multichannel receivers placed on moving platforms. First, the log-likelihood function of the received signal for a Rician target is derived, where the received signal scattered off the target comprises of dominant scatterer (DS) component and weak isotropic scatterers (WIS) components. Then, the analytically closed-form expressions of the Cramer-Rao lower bounds (CRLBs) on the Cartesian coordinates of target position and velocity are calculated, which can be adopted as a performance metric to access the target parameter estimation accuracy for LFM-based radar network systems in a Rice fading environment. It is found that the cumulative Fisher information matrix (FIM) is a linear combination of both DS component and WIS components, and it also demonstrates that the joint CRLB is a function of signal-to-noise ratio (SNR), target's radar cross section (RCS) and transmitted waveform parameters, as well as the relative geometry between the target and the radar network architectures. Finally, numerical results are provided to indicate that the joint target parameter estimation performance of active radar networks can be significantly improved with the exploitation of DS component.

  19. The Real-Valued Sparse Direction of Arrival (DOA Estimation Based on the Khatri-Rao Product

    Directory of Open Access Journals (Sweden)

    Tao Chen

    2016-05-01

    Full Text Available There is a problem that complex operation which leads to a heavy calculation burden is required when the direction of arrival (DOA of a sparse signal is estimated by using the array covariance matrix. The solution of the multiple measurement vectors (MMV model is difficult. In this paper, a real-valued sparse DOA estimation algorithm based on the Khatri-Rao (KR product called the L1-RVSKR is proposed. The proposed algorithm is based on the sparse representation of the array covariance matrix. The array covariance matrix is transformed to a real-valued matrix via a unitary transformation so that a real-valued sparse model is achieved. The real-valued sparse model is vectorized for transforming to a single measurement vector (SMV model, and a new virtual overcomplete dictionary is constructed according to the KR product’s property. Finally, the sparse DOA estimation is solved by utilizing the idea of a sparse representation of array covariance vectors (SRACV. The simulation results demonstrate the superior performance and the low computational complexity of the proposed algorithm.

  20. Lwner Partial Ordering Inequalities on the Khatri-Rao Product of Matrices%关于矩阵Khatri-Rao乘积的Lwner偏序不等式

    Institute of Scientific and Technical Information of China (English)

    冯晓霞; 杨忠鹏

    2002-01-01

    We apply some equalities on Khatri-Rao and Tracy-Singh products of matrices, under the condition of arbitrary partition, to establish some Lwner partial ordering inequalities on the khatri-rao and Tracy-Singh products of positive semi-definite matrices, further generalize the results in Liu Shuangzhe (1999, Linear Algebra Appl).%首先在任意分块条件下给出了矩阵的Khatri-Rao及Tracy-Singh乘积的一些等式,然后在此基础上建立了这两种矩阵乘积的不等式,从而推广了Liu Shuangzhe (1999, Linear Algebra Appl)的结果.

  1. Pathological changes by Hapalotrema postorchis Rao 1976 (Digenea: Spirorchiidae in a green turtle Chelonia mydas Linnaeus 1758 (Testudines, Cheloniidae from Brazil

    Directory of Open Access Journals (Sweden)

    Werneck M. R.

    2015-06-01

    Full Text Available This note reports the occurrence of Hapalotrema postorchis Rao 1976 collected from an aortic aneurysm in a green turtle (Chelonia mydas Linnaeus 1758 found on the coast of Brazil. Besides the vascular lesion, granulomatous reactions with foreign - body giant cells were found surrounding the parasite eggs in the heart, intestines, liver, pancreas, spleen, brain and kidneys. This paper presents the first report of H. postorchis and accompanying lesions in a green sea turtle from the western South Atlantic Ocean.

  2. Cramér-Rao Lower Bound for Point Based Image Registration With Heteroscedastic Error Model for Application in Single Molecule Microscopy.

    Science.gov (United States)

    Cohen, E A K; Kim, D; Ober, R J

    2015-12-01

    The Cramér-Rao lower bound for the estimation of the affine transformation parameters in a multivariate heteroscedastic errors-in-variables model is derived. The model is suitable for feature-based image registration in which both sets of control points are localized with errors whose covariance matrices vary from point to point. With focus given to the registration of fluorescence microscopy images, the Cramér-Rao lower bound for the estimation of a feature's position (e.g., of a single molecule) in a registered image is also derived. In the particular case where all covariance matrices for the localization errors are scalar multiples of a common positive definite matrix (e.g., the identity matrix), as can be assumed in fluorescence microscopy, then simplified expressions for the Cramér-Rao lower bound are given. Under certain simplifying assumptions these expressions are shown to match asymptotic distributions for a previously presented set of estimators. Theoretical results are verified with simulations and experimental data.

  3. Simultaneous localization and mapping implementation based on the improved Rao-Blackwellized particle filter%基于改进Rao-Blackwellized粒子滤波器的同时定位与地图构建

    Institute of Scientific and Technical Information of China (English)

    罗元; 傅有力; 程铁凤

    2015-01-01

    解决同时定位与地图构建(SLAM)问题是实现机器人自主导航的核心.目前,Rao-Blackwellized粒子滤波器(RBPF)是解决机器人同时定位与地图构建的有效方法.该方法在计算提议分布时,通常只考虑移动机器人的里程计信息,因此存在需要大量的采样粒子造成的计算量和复杂度增大的问题.本文提出一种改进算法,在计算提议分布时将机器人里程计信息和激光传感器采集的距离信息进行融合,有效地减少了所需粒子的数量并降低了滤波器预测阶段机器人位姿的不确定性.本文在机器人操作系统(robot operating system,ROS)平台上,使用配有URG激光器的Pioneer3-DX机器人进行了实验.结果表明,采用本文方法能够实时在线地创建高精度的栅格地图,为机器人在未知环境中的SLAM和导航提供了新途径.

  4. Implementation of Information Management System for Radiation Safety of Personnel at the Russian Northwest Center for Radioactive Waste Management 'SevRAO' - 13131

    Energy Technology Data Exchange (ETDEWEB)

    Chizhov, K.; Simakov, A.; Seregin, V.; Kudrin, I.; Shandala, N.; Tsovyanov, A.; Kryuchkov, V. [Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency, RF Ministry of Health and Social Development. 46, Zhivopisnaya St., Moscow, 123182 (Russian Federation); Krasnoschekov, A.; Kosnikov, A. [Northwest Center for Radioactive Waste Management ' SevRAO' - a branch of the Federal State Unitary Enterprise ' Enterprise for Radioactive Waste Management' ' RosRAO' 183017, Murmansk, Lobova st., 100 (Russian Federation); Kemsky, I. [Regional management - 120 of the Federal Medical-Biological Agency, 184682, Snezhnogorsk, Valentina Biryukova St., 5/1 (Russian Federation); Sneve, M. [Norwegian Radiation Protection Authority, Postboks 55, 1332 Oesteraas (Norway)

    2013-07-01

    The report is an overview of the information-analytical system designed to assure radiation safety of workers. The system was implemented in the Northwest Radioactive Waste Management Center 'SevRAO' (which is a branch of the Federal State Unitary Enterprise 'Radioactive Waste Management Enterprise RosRAO'). The center is located in the Northwest Russia. In respect to 'SevRAO', the Federal Medical-Biological Agency is the regulatory body, which deals with issues of radiation control. The main document to regulate radiation control is 'Reference levels of radiation factors in radioactive wastes management center'. This document contains about 250 parameters. We have developed a software tool to simplify control of these parameters. The software includes: input interface, the database, dose calculating module and analytical block. Input interface is used to enter radiation environment data. Dose calculating module calculates the dose on the route. Analytical block optimizes and analyzes radiation situation maps. Much attention is paid to the GUI and graphical representation of results. The operator can enter the route at the industrial site or watch the fluctuations of the dose rate field on the map. Most of the results are presented in a visual form. Here we present some analytical tasks, such as comparison of the dose rate in some point with control levels at this point, to be solved for the purpose of radiation safety control. The program helps to identify points making the largest contribution to the collective dose of the personnel. The tool can automatically calculate the route with the lowest dose, compare and choose the best route. The program uses several options to visualize the radiation environment at the industrial site. This system will be useful for radiation monitoring services during the operation, planning of works and development of scenarios. The paper presents some applications of this system on real data

  5. 非线性阵列Khatri-Rao子空间宽带DOA估计%Khatri-Rao Subspace Wideband DOA Estimation for Nonlinear Array

    Institute of Scientific and Technical Information of China (English)

    潘捷; 周建江

    2013-01-01

    A Khatri-Rao subspace based wideband direction-of-arrive (DOA) estimation algorithm for nonlinear arrays without preliminary angle estimation is proposed. Prom steering vectors of the Khatri-Rao subspace virtual array, the wideband focusing matrix regardless of DOAs is constructed with a manifold separation technique. Benefited from the increased dimensions of the Khatri-Rao subspace virtual array, preliminary angle estimation can be avoided and the algorithm still performs well. On the other hand, by using Root-MUSIC, this method can avoid expensive spectrum searching used in conventional methods so as to reduce the computational burden. Simulations show that performance of the proposed method is close to the preliminary angle estimation needed Khatri-Rao subspace wideband DOA estimation algorithm, FKR-RSS. The proposed method performs better than FKR-RSS when the number of sources is more than the number of sensors.%针对非线性阵列,基于Khatri-Rao子空间概念提出一种新的无预估角宽带到达角(direction-of-arrive,DOA)估计方法.从Khatri-Rao子空间虚拟阵列导向矢量出发,利用虚拟阵列所增加的维数,以流形分离技术构造与到达角无关的宽带聚焦矩阵,无需预估角且估计性能良好.采用Root-MUSIC算法避免传统算法中的谱峰搜索过程,降低了计算量.仿真结果表明,该方法与需要预估角的已有Khatri-Rao子空间宽带DOA估计方法FKR-RSS相比,具有相近的估计精度和目标分辨力.在信号源数大于阵元数的情况下,其性能优于FKR-RSS.

  6. An integrated approach to study the biomarker responses in marine gastropod Nerita chamaeleon environmentally exposed to polycyclic aromatic hydrocarbons

    Digital Repository Service at National Institute of Oceanography (India)

    Bhagat, J.; Sarkar, A.; Deepti, V.; Singh, V.; Raiker, L.; Ingole, B.S.

    sample from Zoological Survey of India; Kolkata, India (Subba Rao et al., 1992). Snails of similar size (around 18 - 30 mm) irrespective of their sex were used in this study. Snails were transported in a plastic container to the lab within 3 h...

  7. Experience of cooperation between RAO Gazprom (Russia) and Geostock (France) in the project for underground storage of natural gas in salt caverns at Volgograd

    Energy Technology Data Exchange (ETDEWEB)

    Bely, N.I.; Smirnov, V.I.; Parfenov, V.I. [RAO Gazprom (Russian Federation); Marchand, R. Le; Laguerie, P. de; Yoy, T. [Geostock (France)

    1997-11-01

    A new natural gas storage facility in salt is planned to meet daily and seasonal load fluctuations and provide regional security of supply of the Volgograd region. The design and field work for this new facility was carried out under a cooperation agreement between RAO Gazprom, Podzemgazprom, Volgograd Transgaz and Geostock. Mining the cavities will be made difficult by the complex geology where the salt formation consists of alternating beds of halite, anhydrite and the magnesium and potassium salts bischofite, carnalite and sylvinite which are more soluble and subject to high creep. The results of the laboratory testing and geotechnical modelling on alternative cavern models performed by Podzemgazprom and Geostock are described and compared. (au)

  8. Assessment of cognition using the Rao's Brief Repeatable Battery of Neuropsychological Tests on a group of Brazilian patients with multiple sclerosis

    Directory of Open Access Journals (Sweden)

    Joseph Bruno Bidin Brooks

    2011-12-01

    Full Text Available To assess the cognition of patients with multiple sclerosis (MS using the Rao's Brief Repeatable Battery of Neuropsychological Tests (BRB-N. METHOD: BRB-N was translated and adapted for control subjects. Subsequently, it was applied to a group of patients with relapsing-remitting (RR MS. RESULTS: The assessment on the healthy controls (n=47 showed that the correlation between tests on the same cognitive domain was high and that there was a five-factor solution that explained 90% of the total variance. Except for the Word List Generation subset of tests, the performance of patients with RRMS (n=39 was worse than that of the healthy controls. CONCLUSION: BRB-N is a relatively simple method to assess cognition of patients with MS in the daily clinic. It does not take long to apply and does not require special skills or equipment.

  9. State estimation with quantized innovations in wireless sensor networks:Gaussian mixture estimator and posterior Crame´r-Rao lower bound

    Institute of Scientific and Technical Information of China (English)

    Zhang Zhi; Li Jianxun; Liu Liu; Liu Zhaolei; Han Shan

    2015-01-01

    Since the features of low energy consumption and limited power supply are very impor-tant for wireless sensor networks (WSNs), the problems of distributed state estimation with quan-tized innovations are investigated in this paper. In the first place, the assumptions of prior and posterior probability density function (PDF) with quantized innovations in the previous papers are analyzed. After that, an innovative Gaussian mixture estimator is proposed. On this basis, this paper presents a Gaussian mixture state estimation algorithm based on quantized innovations for WSNs. In order to evaluate and compare the performance of this kind of state estimation algo-rithms for WSNs, the posterior Cramer–Rao lower bound (CRLB) with quantized innovations is put forward. Performance analysis and simulations show that the proposed Gaussian mixture state estimation algorithm is efficient than the others under the same number of quantization levels and the performance of these algorithms can be benchmarked by the theoretical lower bound.

  10. State estimation with quantized innovations in wireless sensor networks: Gaussian mixture estimator and posterior Cramér–Rao lower bound

    Directory of Open Access Journals (Sweden)

    Zhang Zhi

    2015-12-01

    Full Text Available Since the features of low energy consumption and limited power supply are very important for wireless sensor networks (WSNs, the problems of distributed state estimation with quantized innovations are investigated in this paper. In the first place, the assumptions of prior and posterior probability density function (PDF with quantized innovations in the previous papers are analyzed. After that, an innovative Gaussian mixture estimator is proposed. On this basis, this paper presents a Gaussian mixture state estimation algorithm based on quantized innovations for WSNs. In order to evaluate and compare the performance of this kind of state estimation algorithms for WSNs, the posterior Cramér–Rao lower bound (CRLB with quantized innovations is put forward. Performance analysis and simulations show that the proposed Gaussian mixture state estimation algorithm is efficient than the others under the same number of quantization levels and the performance of these algorithms can be benchmarked by the theoretical lower bound.

  11. Variance of All-Phase FFT Measuring Phases and Its Cramer-Rao Lower Bound%全相位FFT测相方差及其Cramer-Rao下限

    Institute of Scientific and Technical Information of China (English)

    黄翔东; 王博; 杜宇彬; 王兆华

    2013-01-01

    To disclose the underlying reasons of the superiority of apFFT in measuring phases compared with other existing methods, the distribution characteristics of spectral leakages and the theory of parameter estimation are combined. Therefore, one Cramer-Rao lower bound (CRLB) involving two- unknown- parameter estimation is deduced, which is suitable to apFFT measuring phases. Based on the deduction, the relationship of apFFT phase error and frequency offset distribution is also obtained. Moreover, it is also pointed out that the novel CRLB is 12 dB lower than the traditional CRLB involving three parameters. Consequently, several conclusions are drawn for apFFT measuring phases under different signal to noise ratios (SNRs) and different frequency offsets. Simulation results indicate that the phase measuring variance of apFFT can be defined by CRLB2 with different SNRs and different frequency offsets, verifying the above conclusions and the correctness of the novel CRLB.%为揭示全相位FFT(All-phase FFT,apFFT)相位测量法相比于现有方法精度提高的内在原因,在前人基础上,结合谱泄漏分布特征及其参数估计理论,推导出了适用于apFFT测相的两未知参数估计模型的克拉罗下限(Cramer-Rao lower bound,CRLB),以及apFFT测相误差与频偏分布的关系.指出该理论下限比传统三参数的CRLB低12 dB,基于此总结出一系列在不同信噪比和不同频偏情况下的apFFT测相性能结论.仿真结果表明:在不同的信噪比环境和不同的频偏情况下,apFFT的测相方差都能被CRLB2所界定,验证了上述结论及其新的CRLB正确性.

  12. 3 D MU-MIMO Precoding Method Based on Khatri-Rao Product%基于Khatri-Rao积的3D MU-MIMO预编码方法

    Institute of Scientific and Technical Information of China (English)

    吴学文; 景小荣; 刘利

    2014-01-01

    In order to solve the problem of co-channel interference ( CCI ) in downlink 3 D ( Three Dimen-sion) MU-MIMO( Multi-user Multiple Input Multiple Output) system,a precoding method based on Khatri-Rao product is proposed. Firstly,outline codebook is designed,and then the user selects the best horizon-tal dimension precoding codeword and vertical dimension precoding codeword respectively,and feeds back to the base station,finally base station constructs 3D precoding matrix according to the proposed Khatri-Rao product and processes different users' data. Both theoretical analysis and simulations indicate that the proposed method can not only match the authentic channel state information( CSI) but also effectively sup-press the co-channel interference and improve system bit error rate( BER) performance. The research in this paper has a certain reference value for the system optimization.%为了解决下行三维(3D)多用户(Multi-User,MU)多输入多输出(MIMO)系统中的共信道干扰问题,提出了一种基于Khatri-Rao积的3 D预编码方法。该方法首先产生离线码本,然后各用户分别选择与水平维和垂直维信道最匹配的的码字并将其反馈给基站端,最后,根据提出的Khatri-Rao积基站端构造3 D预编码矩阵,对不同用户数据进行处理。理论分析和仿真结果表明,该方法可有效地匹配真实信道状态信息( CSI),而且可有效地抑制共信道干扰,提升系统误码性能,对系统的性能优化有一定的参考价值。

  13. Radiological protection regulation during spent nuclear fuel and radioactive waste management in the western branch of the Federal State Unitary Enterprise 'SevRAO'.

    Science.gov (United States)

    Simakov, A V; Sneve, M K; Abramov, Yu V; Kochetkov, O A; Smith, G M; Tsovianov, A G; Romanov, V V

    2008-12-01

    The site of temporary storage of spent nuclear fuel and radioactive waste, situated at Andreeva Bay in Northwest Russia, was developed in the 1960s, and it has carried out receipt and storage of fresh and spent nuclear fuel, and solid and liquid radioactive waste generated during the operation of nuclear submarines and nuclear-powered icebreakers. The site is now operated as the western branch of the Federal State Unitary Enterprise, SevRAO. In the course of operation over several decades, the containment barriers in the Spent Nuclear Fuel and Radioactive Waste storage facilities partially lost their containment effectiveness, so workshop facilities and parts of the site became contaminated with radioactive substances. This paper describes work being undertaken to provide an updated regulatory basis for the protection of workers during especially hazardous remediation activities, necessary because of the unusual radiation conditions at the site. It describes the results of recent survey work carried out by the Burnasyan Federal Medical Biophysical Centre, within a programme of regulatory cooperation between the Norwegian Radiation Protection Authority and the Federal Medical-Biological Agency of Russia. The survey work and subsequent analyses have contributed to the development of special regulations setting out radiological protection requirements for operations planned at the site. Within these requirements, and taking account of a variety of other factors, a continuing need arises for the implementation of optimisation of remediation at Andreeva Bay.

  14. Analysis of the Bayesian Cramer-Rao lower bound in astrometry: Studying the impact of prior information in the location of an object

    CERN Document Server

    Echeverria, Alex; Mendez, Rene A; Orchard, Marcos

    2016-01-01

    Context. The best precision that can be achieved to estimate the location of a stellar-like object is a topic of permanent interest in the astrometric community. Aims. We analyse bounds for the best position estimation of a stellar-like object on a CCD detector array in a Bayesian setting where the position is unknown, but where we have access to a prior distribution. In contrast to a parametric setting where we estimate a parameter from observations, the Bayesian approach estimates a random object (i.e., the position is a random variable) from observations that are statistically dependent on the position. Methods. We characterize the Bayesian Cramer-Rao (CR) that bounds the minimum mean square error (MMSE) of the best estimator of the position of a point source on a linear CCD-like detector, as a function of the properties of detector, the source, and the background. Results. We quantify and analyse the increase in astrometric performance from the use of a prior distribution of the object position, which is ...

  15. Carrier and Clock Recovery in (Turbo-Coded Systems: Cramér-Rao Bound and Synchronizer Performance

    Directory of Open Access Journals (Sweden)

    M. Moeneclaey

    2005-05-01

    Full Text Available In this paper, we derive the Cramér-Rao bound (CRB for joint carrier phase, carrier frequency, and timing estimation from a noisy linearly modulated signal with encoded data symbols. We obtain a closed-form expression for the CRB in terms of the marginal a posteriori probabilities of the coded symbols, allowing efficient numerical evaluation of the CRB for a wide range of coded systems by means of the BCJR algorithm. Simulation results are presented for a rate 1/2 turbo code combined with QPSK mapping. We point out that the synchronization parameters for the coded system are essentially decoupled. We find that, at the normal (i.e., low operating SNR of the turbo-coded system, the true CRB for coded transmission is (i essentially the same as the modified CRB and (ii considerably smaller than the true CRB for uncoded transmission. Comparison of actual synchronizer performance with the CRB for turbo-coded QPSK reveals that a “code-aware” soft-decision-directed synchronizer can perform very closely to this CRB, whereas “code-unaware” estimators such as the conventional non-data-aided algorithm are substantially worse; when operating on coded signals, the performance of the latter synchronizers is still limited by the CRB for uncoded transmission.

  16. Modified Cramér-Rao lower bounds for joint position and velocity estimation of a Rician target in OFDM-based passive radar networks

    Science.gov (United States)

    Shi, C. G.; Salous, S.; Wang, F.; Zhou, J. J.

    2017-01-01

    Owing to the increased deployment and the favorable range and Doppler resolutions, orthogonal frequency-division multiplexing (OFDM)-based L band digital aeronautical communication system type 1 (LDACS1) stations have become attractive systems for target surveillance in passive radar applications. This paper investigates the problem of joint parameter (position and velocity) estimation of a Rician target in OFDM-based passive radar network systems with multichannel receivers placed on moving platforms, which are composed of multiple OFDM-based LDACS1 transmitters of opportunity and multiple radar receivers. The modified Cramér-Rao lower bounds (MCRLBs) on the Cartesian coordinates of target position and velocity are computed, where the received signal from the target is composed of dominant scatterer (DS) component and weak isotropic scatterers (WIS) component. Simulation results are provided to demonstrate that the target parameter estimation accuracy can be improved by exploiting the DS component. It also shows that the joint MCRLB is not only a function of the transmitted waveform parameters, target radar cross section, and signal-to-noise ratio but also a function of the relative geometry between the target and the passive radar networks. The analytical expressions of MCRLB can be utilized as a performance metric to access the target parameter estimation in OFDM-based passive radar networks in that they enable the selection of optimal transmitter-receiver pairs for target estimation.

  17. “古雅”:饶锷先生的文化心态与审美境界%Rao E and the Crisis of Chinese Consciousness

    Institute of Scientific and Technical Information of China (English)

    闵定庆

    2013-01-01

    Rao E(1890-1932), as a famous businessman, antiquarian, bibliophile, scholar, writer and social activist in Chaozhou area , dedicated his life to preserving the quintessence of Chinese culture and rehabilitating the study of Chinese culture .On the one hand , he was diligent and prolific , having filled up a lot of academic blanks . On another hand , he took an active part in launching journals , publishing books , forming associations , and holding the scholars together .He welded together a group with characteristics of the times and places , making a positive contribution to preserving and promoting Chinese traditional culture .The series of activities and writings contained the lofty aspiration that administer affairs with his scholarship just like Gu Yanwu , and radiated with a classic and elegant charisma .Rao E worked hard at the transform between his social identity and cultural identity , trying to continue the tradition from the level of creative spirit , which originated from Chinese classic humanities , in re-sponse to the challenge of Western learning .It fully embodied the typical spirit and thought of native intellectuals in the modern transition period .%饶锷先生(1890-1932)作为潮州的富商、文物收藏家、藏书家、学者、作家及社会活动家,毕生致力于保存国粹、振兴国学,一方面勤于著述,著作等身,创获极多,填补了不少学术空白,另一方面,积极办刊、出书、结社,团结潮汕学人,凝聚了一个时代特色、地域特色鲜明的“古学”群体,为保存与弘扬中华传统文化作出了积极贡献。这一系列“国故学”活动,蕴涵着顾炎武式的“学术经世”的入世弘愿,散发着“古雅”的气息。饶锷努力实现社会身份与文化身份的转型,试图从中国古典学术的创造性精神层面赓续传统,以回应西学的挑战,充分体现了近代转型时期本土知识分子特有的精神气质与思想深度。

  18. Analysis of the Bayesian Cramér-Rao lower bound in astrometry. Studying the impact of prior information in the location of an object

    Science.gov (United States)

    Echeverria, Alex; Silva, Jorge F.; Mendez, Rene A.; Orchard, Marcos

    2016-10-01

    Context. The best precision that can be achieved to estimate the location of a stellar-like object is a topic of permanent interest in the astrometric community. Aims: We analyze bounds for the best position estimation of a stellar-like object on a CCD detector array in a Bayesian setting where the position is unknown, but where we have access to a prior distribution. In contrast to a parametric setting where we estimate a parameter from observations, the Bayesian approach estimates a random object (i.e., the position is a random variable) from observations that are statistically dependent on the position. Methods: We characterize the Bayesian Cramér-Rao (CR) that bounds the minimum mean square error (MMSE) of the best estimator of the position of a point source on a linear CCD-like detector, as a function of the properties of detector, the source, and the background. Results: We quantify and analyze the increase in astrometric performance from the use of a prior distribution of the object position, which is not available in the classical parametric setting. This gain is shown to be significant for various observational regimes, in particular in the case of faint objects or when the observations are taken under poor conditions. Furthermore, we present numerical evidence that the MMSE estimator of this problem tightly achieves the Bayesian CR bound. This is a remarkable result, demonstrating that all the performance gains presented in our analysis can be achieved with the MMSE estimator. Conclusions: The Bayesian CR bound can be used as a benchmark indicator of the expected maximum positional precision of a set of astrometric measurements in which prior information can be incorporated. This bound can be achieved through the conditional mean estimator, in contrast to the parametric case where no unbiased estimator precisely reaches the CR bound.

  19. 相对定位估计的修正克拉美罗界%Modified Cramer-Rao Bound for Relative Location Estimation

    Institute of Scientific and Technical Information of China (English)

    李协; 张效义; 于旭; 胡赟鹏

    2013-01-01

    为定量地比较无线传感器网络中相对定位系统的时间同步误差对TOA机制与TDOA机制定位估计性能的影响,分析了同步误差的组成,将同步误差计入观测模型,在此观测模型下修正了TOA机制与TOA/RSS混合机制CRB,并在相同的参考节点布局下分别与TDOA机制和TDOA/RSS混合机制的CRB做比较.新的观测模型表明,在观测方程中,发送端时钟误差同时也是未知量;TOA机制可解出该未知量,用于消除同步误差;而TDOA机制牺牲一个观测量用以消除发送端时钟误差,降低了系统时间同步要求,也即消除了一个未知量.理论证明及仿真结果均表明,在等量的同步误差和相同的参考节点布局下TOA机制与TDOA机制CRB相等以及TOA/RSS与TDOA/RSS混合机制CRB相等,而RSS机制分别与TOA机制、TDOA机制的混合,提高了TOA机制、TDOA机制在近距离定位时的性能.%In order to compare the effect of synchronization error on wireless sensor networks based relative location accuracy between time of arrival (TOA) and time difference of arrival (TDOA) schemes, the synchronization error components are analyzed and the measurement model contained clock offset is established. The TOA and TOA/RSS (received signal strength) schemes' modified Cramer-Rao bound (MCRB) are derived and compared with those of the TDOA and TDOA/RSS schemes, respectively. It is shown that the transmitter's clock offset is also an unknown variable in the new observation equation, and it can be solved in the TOA scheme to eliminate part of synchronization error. The TDOA scheme sacrifices one measurement to subtract the transmitter's clock offset from unknown variables, thus reducing synchronize requirements. The theoretical derivation and simulation results show that the MCRBs for TOA and TDOA schemes are the same, as well as the MCRBs for TOA/RSS and TDOA/RSS hybrid schemes when using the same sensor array and introducing the same amount synchronization

  20. Changes in the soft-bottom macrobenthic diversity and community structure from the ports of Mumbai, India

    Digital Repository Service at National Institute of Oceanography (India)

    Mandal, S.; Harkantra, S.N.

    samples were transported to the laboratory and identified to species level using a microscope with the help of available taxonomic literature (Satyamurti 1952, 1956; Fauvel 1953; Day 1967; Hartman 1974a, 1974b; Srikrishnadhas et al. 1987; Subba Rao et al..., west coast of India. Current Science, 85(10), 1458-1464. Hartman, O. (1974a). Polychaetous annelids of the Indian Ocean including an account of species collected by members of the International Indian Ocean Expeditions, 1963-64 and a catalogue...

  1. Effects of Cylindrospermopsis raciborskii strains (Woloszynska, 1912 Senayya & Subba Raju on the mobility of Daphnia laevis (Cladocera, Daphniidae

    Directory of Open Access Journals (Sweden)

    GC Restani

    Full Text Available Cylindrospermopsis raciborskii is a cyanobacterium distributed worldwide that is known to produce cyanotoxins. Some of the Brazilian strains can produce saxitoxins (STXs, which are classified as neurotoxins and can paralyze cladocerans .Daphnia laevis is a cladoceran with a wide distribution in the Americas and has been studied as a possible test-organism in toxicity bioassays. The present work tested the acute effect on D laevis mobility when fed a saxitoxin-producing (STX and neoSTX C. raciborskii strain, CYRF-01, and compared the results with the effects of a non-toxic strain (NPCS-1. Neonates (6-24 hours after birth were exposed to concentrations of C. raciborskii varying from 102 to 106 cells·mL–1 of each strain for up to three hours. The cladocerans were then transferred to a medium without toxic filaments for 24 hours. Only the organisms exposed to the STX-producing strain showed signs of the immobilization of swimming movements, confirming the effects of the toxins. There was a linear correlation between the time required to induce stopping the swimming movement, with a shorter time to needed to induce immobilization at a higher the concentration; this correlation was inverse to the time required to recover the swimming movements (longer at higher concentrations, p < 0.1. D. laevis is a tropical and subtropical species with great potential for use in toxicity tests for the detection of STXs, despite being native to and found in a great array of freshwater bodies. This is the first assay testing STX-producing and non-producing C. raciborskii strains on D. laevis, species that are both found in Brazilian ecosystems.

  2. “难民之父”饶家驹及其救助难民的卓越贡献%"Father of the Refugees'Rao Jiaju and His Outstanding Contribution to Aid Refugees

    Institute of Scientific and Technical Information of China (English)

    苏智良

    2015-01-01

    1937年11月,法国人饶家驹以他的博爱、坚韧、独创、才华与责任心,在上海创立战时平民救护的难民区———饶家驹区,延续至1940年6月,保护了30多万中国难民,被称为“难民之父”、“中国之友”。这个“上海模式”推广到南京、汉口、广州,乃至法国、德国,并推动日内瓦第四公约的订立,战时保护平民成为各国的共识,从而推动了人类文明的进步。饶家驹的“博爱主义”、“慈善行为”、奉献精神、慈悲情怀的高尚人格,超越了国家、种族、宗教与党派,被称赞为20世纪世界人道主义的光辉典范。%The French Rao Jiaju set up safety zones in Shanghai from November 1937 to June 1940 with his love, tough, unique, talent and responsibility, he protect the more than 30 million Chinese refugees, who was known as the"Father of the refugees"and"Friends of China."He set up safety zones in Nanjing, Hankou, Guan-gzhou, as well as France, Germany, and he promote the development of the Fourth Geneva Convention.The Pro-tection of Civilian became the consensus of all countries, thus promoting the progress of human civilization."Phi-lanthropy", the spirit of noble character and dedication of Rao Jiaju, compassion feelings, transcends national, ethnic, religious and partisan,he was regarded as a shining example of world humanitarian in the 20th century.

  3. Cramer-Rao lower bounds for estimating carrier parameters of PSK signals in multi-antenna cooperative receivers%多天线协同接收PSK载波参数估计的CRLB

    Institute of Scientific and Technical Information of China (English)

    杨珂; 万明康; 李鸥

    2012-01-01

    针对利用多个独立天线对同一信号进行协同接收的问题,推导了数据辅助(DA)和非数据辅助(NDA)方式BPSK/QPSK信号频率及相位估计的Cramer-Rao下界(CRLB),并与传统单个天线接收时的CRLB进行了比较.结果表明,在DA方式下,多天线协同接收PSK信号频率及相位估计的CRLB与传统单天线接收的CRLB相同;在NDA方式下,多天线协同接收的CRLB则要低于传统单天线接收的CRLB.%This paper investigates the PSK parameter estimation problem with multiple independent cooperative receivers, and derives the Cramer-Rao Lower Bounds (CRLBs) of BPSK/QPSK frequency and phase estimation based on either known or random data. Compared with the CRLBs in traditional single receiver, the results indicate that the CRLBs for Data-Aided(DA) carrier frequency and phase estimation of PSK signals in multi-antenna cooperative receivers are the same with the CRLBs in traditional single receiver, but the CRLBs for Non-Data-Aided(NDA) estimation for multi-antenna cooperative receivers are lower than the traditional ones.

  4. Cramer-Rao Bounds for FOA and TOA Estimation from Galileo Search and Rescue Signal%伽利略搜救信号FOA和TOA估计的克拉美-罗界

    Institute of Scientific and Technical Information of China (English)

    王堃; 吴嗣亮; 韩月涛

    2011-01-01

    Considering the uncertainty of message bit width, the Cramer-Rao Bounds (CRBs) for Frequency Of Arrival (FOA) and Time Of Arrival (TOA) estimation from single Galileo Search And Rescue (SAR) signal are researched. Calculation expressions for the elements of Fisher information matrix of Galileo SAR signal are acquired. When calculating the sum of the square of dirac delta function, the properties of dirac delta function and Parseval's theorem are used to transform the computation from time-domain to frequency-domain, and the closed-form analytical solution of CRBs for FOA and TOA estimation are derived. Numerical calculation, Monte Carlo simulation and measurement results validate the effectiveness of the CRBs above which can be used to evaluate the performance of estimation algorithm for the parameters above.%该文考虑信息位宽的不确定性,研究了单个伽利略搜救信号FOA(Frequency Of Arrival)和TOA (Time OfArrival)估计的克拉美-罗界(CRB).推导了伽利略搜救信号Fisher信息矩阵元素的计算表达式,利用单位冲激函数的性质和Parseval定理,将单位冲激函数的平方和转换到频域进行计算,得到了FOA和TOA估计的CRB的解析结果.数值分析,Monte Carlo仿真及实测结果表明,上述CRB具有有效性,可以用于评估上述参数估计算法的性能.

  5. A Robust Cramer-Rao Analogue.

    Science.gov (United States)

    1981-01-01

    Department of Computer Science and Statistics, State University of Sao Carlos, S.P., Brazil; H. T. David is Professor of Statistics and Industrial ...4.11). Example 4.1. (N(0,1), ") is regular L1-optimal. .’i 13 REFERENCES ALAMO, J. B. (1964), "Estimacion en Mediana," Trabajos de Estadistica , 15, 93

  6. Cramer-Rao Bounds of Key Parameters Estimation for Galileo SAR Signal%伽利略搜救信号关键参数估计的克拉美—罗界

    Institute of Scientific and Technical Information of China (English)

    王堃; 吴嗣亮; 田静

    2011-01-01

    Considering the uncertainty of message bit width, the Cramer-Rao Bounds (CRBs) for the estimation of message bit width,frequency of arrival (FOA) and time of arrival (TOA) from Galileo search and rescue (SAR) signal were researched. General formula for calculating the elements of Fisher information matrix was derived first.Then the calculation expressions for the Fisher matrix elements of Galileo SAR signal were acquired. When calculating the sum of the square of Dirac delta function, the properties of Dirac delta function and Parseval' s theorem were used to transform the computation from time-domain to frequency-domain. Then the closed-form analytical solutions of the CRBs for the estimation of message bit width, FOA and TOA were derived. Numerical calculation and Monte Carlo simulation results validate the effectiveness of the CRBs above which can be used to evaluate the performance of message bit width,FOA and TOA estimation algorithm.%本文考虑信息位宽的不确定度,研究了伽利略搜救信号信息位宽、到达频率(FOA)和到达时间(TOA)估计的克拉美—罗界(CRB).首先推导了计算Fisher信息矩阵各元素的通用公式,然后推导得到了伽利略搜救信号Fisher 信息矩阵各元素的计算表达式.具体计算时,利用单位冲激函数的性质和Parseval定理,将单位冲激函数的平方和转换到频域进行计算,得到了信息位宽、FOA和TOA估计的CRB的解析结果.数值分析和Monte Carlo仿真结果表明,该CRB具有有效性,可以用于评估信息位宽、FOA和TOA估计算法的性能.

  7. Mumbai harbour, India: Gateway for introduction of marine organisms

    Digital Repository Service at National Institute of Oceanography (India)

    Gaonkar, C.; Sawant, S.S.; Anil, A.C.; Venkat, K.; Harkantra, S.N.

    2009 / Published online: 9 April 2009 © Springer Science + Business Media B.V. 2009 Abstract Ships have been identified as one of the important vectors in the translocation of or- ganisms from one bioregion to another leading to bioinvasion...., & Venkat, K. (2007). Eutrophication status of marine environment of Mumbai and Jawaharlal Nehru ports. Environ- mental Monitoring and Assessment, 127, 283–291. doi:10.1007/s10661-006-9279-5. Subba Rao, D. V. (2005). Comprehensive review of the rec- ords...

  8. Co-occurrence of Cylindrospermopsis raciborskii (Woloszynska Seenaya & Subba Raju and Microcystis panniformis Komárek et al. in Mundaú reservoir, a semiarid Brazilian ecosystem

    Directory of Open Access Journals (Sweden)

    Ariadne do Nascimento Moura

    2015-09-01

    Full Text Available Abstract The influence of temperature and nutrients on the co-occurrence of Cylindrospermopsis raciborskii and Microcystis panniformis in Mundaú reservoir was investigated. Samples were collected bimonthly from September 2008 to March 2009 with a Van Dorn bottle at two depths (surface and bottom (n = 16. Water temperature was greater than 22.50 °C; pH values ranged from 6.09 to 8.42; and nitrogen-phosphorus ratios were low (0.11-1.46. The low N:P ratios indicated high phosphorus input, and an eutrophic to hypereutrophic condition in the reservoir. A significant positive correlation of spatial and temporal distribution of C. raciborskii with M. panniformis was observed. Canonical correlation analysis (CCA results revealed significant association of the biomass of most cyanobacterial species with temperature and nutrients concentration. However, these factors did not explain the co-occurrence of C. raciborskii and M. panniformis. On the other hand, morphological and physiological adaptations such as the possession of aerotopes and production of mucilage, and co-operation between the two species permitted niche overlap, and consequently the co-occurrence of C. raciborskii and M. panniformis in Mundaú reservoir.

  9. A new species of Symbra (Hymenoptera, Eurytomidae, Heimbrinae from dry forest in Brazil and new occurrence records for other Heimbrinae Uma nova espécie de Symbra (Hymenoptera, Eurytomidae, Heimbrinae de uma área de Caatinga e novos registros de ocorrência de outros Heimbrinae

    Directory of Open Access Journals (Sweden)

    Daniell Rodrigo Rodrigues Fernandes

    2012-12-01

    Full Text Available The geographic ranges of Heimbra opaca (Ashmead, 1894, H. bicolor Subba Rao, 1978 and H. parallela Stage & Snelling, 1986 are extended based on study of material deposited in the entomological collections of the Laboratório de Sistemática e Bioecologia de Parasitoides e Predadores da APTA (Ribeirão Preto, SP, Brazil of the Instituto Brasileiro de Geografia e Estatística (Brasília, DF, Brazil. Symbra potiguara Perioto & Fernandes sp. nov. (Hymenoptera, Eurytomidae is described, illustrated and compared with S. cordobensis Stage & Snelling, 1986, the single species previously known for this genus. A key to the genera of Heimbrinae and to the species of Symbra is provided.Os limites geográficos de Heimbra opaca (Ashmead, 1894, H. bicolor Subba Rao, 1978 e H. parallela Stage & Snelling, 1986 são estendidos com base no material examinado das coleções entomológicas do Laboratório de Sistemática e Bioecologia de Parasitoides e Predadores da APTA (Ribeirão Preto, SP, Brasil e do Instituto Brasileiro de Geografia e Estatística (Brasília, DF, Brasil. Symbra potiguara Perioto & Fernandes sp. nov. (Hymenoptera, Eurytomidae é descrita, ilustrada e comparada com a única espécie conhecida desse gênero, S. cordobensis Stage & Snelling, 1986. Uma chave para os gêneros de Heimbrinae e para as espécies de Symbra é fornecida.

  10. Phase relations in the pseudobinary systems RAO3-R2Ti2O7 (R: rare earth element and Y, A: Fe, Ga, Al, Cr and Mn) and syntheses of new compounds R(A1-xTix)O3+x/2 (2/3≤x≤3/4) at elevated temperatures in air

    Science.gov (United States)

    Brown, Francisco; Jacobo-Herrera, Ivan; Alvarez-Montaño, Victor; Kimizuka, Noboru; Kurashina, Keiji; Michiue, Yuichi; Matsuo, Yoji; Mori, Shigeo; Ikeda, Naoshi; Medrano, Felipe

    2017-07-01

    Phase relations in the pseudo-binary systems RFeO3-R2Ti2O7 (R: Lu, Ho and Dy), RGaO3-R2Ti2O7 (R: Lu and Er), LuAlO3-Lu2Ti2O7 and RAO3-R2Ti2O7 (R: Lu and Yb. A: Cr and Mn) at elevated temperatures in air were determined by means of a classic quenching method. There exist Lu(Fe1-xTix)O3+x/2, R(Ga1-xTix)O3+x/2 (R: Lu and Er) and Lu(Al1-xTix)O3+x/2 (2/3≤ x≤3/4) having the Yb(Fe1-xTix)O3+x/2-type of crystal structure (x=0.72, space group: R3m, a(Å)=17.9773 and c(Å)=16.978 as a hexagonal setting) in these pseudo binary systems. Eighteen compounds R(A1-xTix)O3+x/2 (R: Lu-Sm and Y, A: Fe, Ga and Al) were newly synthesized and their lattice constants as a hexagonal setting were measured by means of the X-ray powder diffraction method. The R occupies the octahedral site and both A and Ti does the trigonalbipyramidal one in these compounds. Relation between lattice constants for the rhombic R(A1-xTix)O3+x/2 and the monoclinic In(A1-xTix)O3+x/2 are as follows, ah≈5 x bm, ch≈3 x cm x sin β and am=31/2 x bm, where ah and ch are the lattice constants as a hexagonal setting for R(A1-xTix)O3+x/2 and am, bm, cm and β are those of the monoclinic In(A1-xTix)O3+x/2. Crystal structural relationships among α-InGaO3 (hexagonal, high pressure form, space group: P63/mmc), InGaO3 (rhombic, hypothetical), (RAO3)n(BO)m and RAO3(ZnO)m (R: Lu-Ho, Y and In, A: Fe, Ga, and Al, B: divalent cation element, m, n: natural number), the orthorhombic-and monoclinic In(A1-xTix)O3+x/2 (A: Fe, Ga, Al, Cr and Mn) and the hexagonal-and rhombic R(A1-xTix)O3+x/2 (R: Lu-Sm and Y, A: Fe, Ga and Al) are schematically presented. We concluded that the crystal structures of both the α-InGaO3 (high pressure form, hexagonal, space group: P63/mmc) and the hypothetical InGaO3 (rhombic) are the key structures for constructing the crystal structures of these compounds having the cations with CN=5.

  11. [Migration of industrial radionuclides in soils and benthal deposits at the coastal margins of the temporary waste storage facility (TWSF) of the Northwest Center for Radioactive Waste Management (SevRAO) and its influence on the possible contamination of the sea offshore waters].

    Science.gov (United States)

    Filonova, A A; Seregin, V A

    2014-01-01

    For obtaining the integral information about the current radiation situation in the sea offshore waters of the temporary waste storage facility (TWSF) of the Northwest Center for Radioactive Waste Management "SevRAO" in the Andreeva Bay and in the settle Gremikha with a purpose of a comprehensive assessment of its condition there was performed radiation-ecological monitoring of the adjacent sea offshore waters of the TWSF. It was shown that in the territory of industrial sites of the TWSF as a result of industrial activity there are localized areas of pollution by man-made radionuclides. As a result of leaching of radionuclides by tidal stream, snowmelt and rainwater radioactive contamination extends beyond the territory of the sanitary protection zone and to the coastal sea offshore waters. To confirm the coastal pollution of the sea offshore waters the levels of mobility of 90Sr and 137Cs in environmental chains and bond strength of them with the soil and benthal deposits were clarified by determining with the method of detection of the forms of the presence of radionuclides in these media. There was established a high mobility of 137Cs and 90Sr in soils and benthal deposits (desorption coefficient (Kd) of 137Cs and 90Sr (in soils - 0.56 and 0.98), in the sediments - 0.82). The migration of radionuclides in environmental chains can lead to the contamination of the environment, including the sea offshore waters.

  12. 150 filmi Odessast Kiievini / Rao Heidmets ; interv. Jaan Ruus

    Index Scriptorium Estoniae

    Heidmets, Rao, 1956-

    2007-01-01

    Ukrainas 14. Rahvusvahelise Animafilmide festivali KROK žüriis osalenu ülevaade üritusest, nähtud filmidest, žürii tööst. Eriauhinna sai Riho Undi nukufilm "Vennad Karusüdamed". Peaauhinna sai inglase Luis Cook'i "Õed Pearce'id" ("The Pearce Sisters")

  13. 150 filmi Odessast Kiievini / Rao Heidmets ; interv. Jaan Ruus

    Index Scriptorium Estoniae

    Heidmets, Rao, 1956-

    2007-01-01

    Ukrainas 14. Rahvusvahelise Animafilmide festivali KROK žüriis osalenu ülevaade üritusest, nähtud filmidest, žürii tööst. Eriauhinna sai Riho Undi nukufilm "Vennad Karusüdamed". Peaauhinna sai inglase Luis Cook'i "Õed Pearce'id" ("The Pearce Sisters")

  14. Stereo vision based SLAM using Rao-Blackwellised particle filter

    Institute of Scientific and Technical Information of China (English)

    Er-yong WU; Gong-yan LI; Zhi-yu XIANG; Ji-lin LIU

    2008-01-01

    We present an algorithm which can realize 3D stereo vision simultaneous localization and mapping (SLAM) for mobile robot in unknown outdoor environments, which means the 6-DOF motion and a sparse but persistent map of natural landmarks be constructed online only with a stereo camera. In mobile robotics research, we extend FastSLAM 2.0 like stereo vision SLAM with "pure vision" domain to outdoor environments. Unlike popular stochastic motion model used in conventional monocular vision SLAM, we utilize the ideas of structure from motion (SFM) for initial motion estimation, which is more suitable for the robot moving in large-scale outdoor, and textured environments. SIFT features are used as natural landmarks, and its 3D positions are constructed directly through triangulation. Considering the computational complexity and memory consumption,Bkd-tree and Best-Bin-First (BBF) search strategy are utilized for SIFT feature descriptor matching. Results show high accuracy of our algorithm, even in the circumstance of large translation and large rotation movements.

  15. RAO-II: an AUV for underwater inspection

    OpenAIRE

    Oliver, G.; Ortiz, A.; Bonin, F.

    2008-01-01

    AIRSUB is a research project funded by the Spanish Ministry of Science and Technology whose aim is to explore the industrial applications of underwater robots. The Systems, Robotics and Vision Group (SRV) from the University of the Balearic Islands (UIB) is responsible for the subproject of cable/pipeline inspection [1]. To this purpose, an Autonomous Underwater Vehicle (AUV) is under development as a platform to test the vision algorithms, control strategies and software ar...

  16. Development of light weight ALFA composites | Rao | International ...

    African Journals Online (AJOL)

    International Journal of Engineering, Science and Technology ... Abstract. Composites are most promising materials of recent interest. Metal matrix ... Scanning electron microscopy and optical microscopy was used for microstructure analysis.

  17. WITH CITRIC ACID Srinivasa Rao Pedada, Srikanth B

    African Journals Online (AJOL)

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    pH-metrically in 0.0-2.5% anionic, cationic and neutral micellar media. ... active site cavities in biological molecules and the bonding behavior of protein residues with the metal ion. ... hydrophobicity are stabilized in the micellar pseudo phase.

  18. First results from the RAO Variable Star Search Program: I. Background, Procedure, and Results from RAO Field 1

    CERN Document Server

    Williams, Michael D

    2011-01-01

    We describe an ongoing variable star search program and present the first reduced results of a search in a 19 square degree (4.4\\circle x 4.4\\circle) field centered on J2000 {\\alpha} = 22:03:24, {\\delta} = +18:54:32. The search was carried out with the Baker-Nunn Patrol Camera located at the Rothney Astrophysical Observatory in the foothills of the Canadian Rockies. A total of 26,271 stars were detected in the field, over a range of about 11-15 (instrumental) magnitudes. Our image processing made use of the IRAF version of the DAOPHOT aperture photometry routine and we used the ANOVA method to search for periodic variations in the light curves. We formally detected periodic variability in 35 stars, that we tentatively classify according to light curve characteristics: 6 EA (Algol), 5 EB ({\\beta} Lyrae), 19 EW (W UMa), and 5 RR (RR Lyrae) stars. Eleven of the detected variable stars have been reported previously in the literature. The eclipsing binary light curves have been analyzed with a package of light cur...

  19. A new species of Symbra (Hymenoptera, Eurytomidae, Heimbrinae from dry forest in Brazil and new occurrence records for other Heimbrinae

    Directory of Open Access Journals (Sweden)

    Daniell Rodrigo Rodrigues Fernandes

    2012-12-01

    Full Text Available The geographic ranges of Heimbra opaca (Ashmead, 1894, H. bicolor Subba Rao, 1978 and H. parallela Stage & Snelling, 1986 are extended based on study of material deposited in the entomological collections of the Laboratório de Sistemática e Bioecologia de Parasitoides e Predadores da APTA (Ribeirão Preto, SP, Brazil of the Instituto Brasileiro de Geografia e Estatística (Brasília, DF, Brazil. Symbra potiguara Perioto & Fernandes sp. nov. (Hymenoptera, Eurytomidae is described, illustrated and compared with S. cordobensis Stage & Snelling, 1986, the single species previously known for this genus. A key to the genera of Heimbrinae and to the species of Symbra is provided.

  20. Population Dynamics of Empoasca vitis and Its Egg Parasitoids on Tea Plantation in Wuhan%武汉地区茶园假眼小绿叶蝉及卵寄生蜂种群消长动态

    Institute of Scientific and Technical Information of China (English)

    毛迎新; 谭荣荣; 龚自明; 刘明炎

    2013-01-01

    假眼小绿叶蝉(Empoasca vitis G(o)the)是中国茶区最主要害虫,在湖北武汉地区茶园对该叶蝉及其卵寄生蜂种群动态进行了初步调查.结果表明,假眼小绿叶蝉种群消长动态呈现双峰型,第一峰出现在5月底至6月底,主要危害夏茶,第二峰出现在9月底至10月底,主要危害秋茶.寄生假眼小绿叶蝉卵的寄生蜂为叶蝉三棒缨小蜂(Stethynimu empoasca Subba Rao)和微小裂骨缨小蜂(Schizophragma parvulas Ogloblin),6~10月2种寄生蜂联合寄生率为23%~55%.%Empoasca vitis is one of the cardinal pests in tea plantation of China.The population dynamics of E.vitis and its egg parasitoids were investigated.Results indicated that there were two peaks of abundance on the population dynamics of E.vitis in Wuhan,among which the first poak appoared from late May to late June,and the second poak occurred from late September to late October.Two egg parasitoids,Stethynimu empoasca Subba Rao and Schizophragma parvulas Ogloblin,in Mymaridae had been found in Wuhan tea plantation,and the combining parasitic porcentage of both egg parasitoids amounted to 23%~55% from June to October.

  1. Investigation of subharmonic ferroresonant oscillations in power systems

    Energy Technology Data Exchange (ETDEWEB)

    Preetham, K.S.; Saravanaselvan, R.; Ramanujam, R. [Department of Electrical and Electronics Engineering, Anna University, Chennai 600 025 (India)

    2006-06-15

    Steady state bifurcation diagram based on continuation technique is a versatile tool for analyzing the behaviour of ferroresonance circuit, since it gives the visualization of multiple solutions. Stability analysis of the solutions obtained by steady state bifurcation diagram [K. Al-Anbarri, R. Ramanujam, T. Keerthiga, K. Kuppusamy, Analysis of non-linear phenomenon in MOV connected transformer, IEE Proc. Generation Transmission Distrib.148 (6) (2001) 562-566; K. Al-Anbarri, R. Ramanujam, R. Saravanaselvan, K. Kuppusamy, Effect of iron core loss nonlinearity on the chaotic ferroresonance in power transformers, Electric Power Syst. Res. 65 (2003) 1-12; K. Al-Anbarri, R. Ramanujam, Ch. Subba Rao, K. Kuppusamy, Effect of circuit configuration on chaotic ferroresonance in a power transformer, Electric Power Components Syst. 30 (2002) 1015-1031] demarcates stable fundamental ferroresonant solution, unstable fold and flip segments. Flip segment in steady state bifurcation diagram [K. Al-Anbarri, R. Ramanujam, T. Keerthiga, K. Kuppusamy, Analysis of nonlinear phenomenon in MOV connected transformer, IEE Proc. Generation Transmission Distrib.148 (6) (2001) 562-566; K. Al-Anbarri, R. Ramanujam, R. Saravanaselvan, K. Kuppusamy, Effect of iron core loss nonlinearity on the chaotic ferroresonance in power transformers, Electric Power Syst. Res. 65 (2003) 1-12; K. Al-Anbarri, R. Ramanujam, Ch. Subba Rao, K. Kuppusamy, Effect of circuit configuration on chaotic ferroresonance in a power transformer, Electric Power Components Syst. 30 (2002) 1015-1031] implies unstable fundamental solution, but does not reveal the range, order and stability of subharmonics. This paper proposes an approach to explore the unstable flip segment further and unearth the hidden subharmonics. As a consequence of this approach, continuum of stable solutions of well-defined domains can be identified. It is found that the existence of subharmonic solutions is sensitive to various factors such as

  2. 21 A Srinivasa Rao1, V Sarath2, B Mrudhula3 1Corresponding ...

    African Journals Online (AJOL)

    incision, less blood loss, shorter operation time, early mobilisation ... includes clinical and radiological evaluation after ... Nail diameter, Neck shaft ... incision size, amount of blood loss, duration of surgery. Post operative characteristics studied.

  3. Multi-disciplinary contributions of HartRAO to global geodesy and geodynamics

    Science.gov (United States)

    Combrinck, Ludwig

    2015-04-01

    The Hartebeesthoek Radio Astronomy Observatory (South Africa) supports global initiatives in both geodesy and geodynamics through an active programme of science platform provision in Africa, the Atlantic Ocean, Indian Ocean and Antarctica. Our involvement ranges from the installation of tide gauges, Global Navigation Satellite Systems stations, seismometers and accelerometers on remote islands to the installation of radar reflectors in Antarctica which enable accurate, geo-referenced maps of the Antarctic coast line to be made. Currently we also participate in the African VLBI Network (AVN), with the aim to densify not only astronomical observatories in Africa, but to improve the geometry and distribution of advanced geodetic and geophysical equipment to facilitate development of research platforms in Africa, which can be used for geodynamics and related sciences, supporting international projects such as the WEGENER initiative. We present our multi-disciplinary activities during the last decade and sketch the way forward. Participation of Africa in the global arena of astronomy, geodesy, geodynamics and related fields will receive a major boost during the next decade. This is partially due to the development of a component of the Square Kilometre Array (SKA) in Africa but also due to the Global Geodetic Observing System (GGOS) project and the international objectives of higher geodetic accuracies and more stable reference frames. Consequent spinoffs into many disciplines relying on global reference frames and sub-cm positional accuracies stand to benefit and Africa can play a major role in improving both science and network geometries.

  4. An approximate quantum Cram\\'{e}r--Rao bound based on skew information

    CERN Document Server

    Luati, Alessandra

    2011-01-01

    A closed-form expression for Wigner-Yanase skew information in mixed-state quantum systems is derived. It is shown that limit values of the mixing coefficients exist such that Wigner-Yanase information is equal to Helstrom information. The latter constitutes an upper bound for the classical expected Fisher information, hence the inverse Wigner-Yanase information provides an approximate lower bound to the variance of an unbiased estimator of the parameter of interest. The advantage of approximating Helstrom's sharp bound lies in the fact that Wigner-Yanase information is straightforward to compute, while it is often very difficult to obtain a feasible expression for Helstrom information. In fact, the latter requires the solution of an implicit second order matrix differential equation, while the former requires just scalar differentiation.

  5. An improvement of an inequality of Ochem and Rao concerning odd perfect numbers

    OpenAIRE

    Zelinsky, Joshua

    2017-01-01

    Let $\\Omega(n)$ denote the total number of prime divisors of $n$ (counting multiplicity) and let $\\omega(n)$ denote the number of distinct prime divisors of $n$. Various inequalities have been proved relating $\\omega(N)$ and $\\Omega(N)$ when $N$ is an odd perfect number. We improve on these inequalities. In particular, we show that if $3 \

  6. Cramer-Rao Bounds for UMTS-Based Passive Multistatic Radar

    Science.gov (United States)

    2014-01-01

    targets with passive bistatic radar,” IET Radar Sonar Navig., vol. 6, pp. 739–745, Oct. 2012. [9] D. E. Hack , L. K. Patton, A. D. Kerrick, and M. A...Committee Member, Tutorial Lecturer). He served as the Publicity Chair for the First IEEE International Conference on Waveform Diversity and Design

  7. Cramér-Rao bound for time-continuous measurements in linear Gaussian quantum systems

    Science.gov (United States)

    Genoni, Marco G.

    2017-01-01

    We describe a compact and reliable method to calculate the Fisher information for the estimation of a dynamical parameter in a continuously measured linear Gaussian quantum system. Unlike previous methods in the literature, which involve the numerical integration of a stochastic master equation for the corresponding density operator in a Hilbert space of infinite dimension, the formulas here derived depend only on the evolution of first and second moments of the quantum states and thus can be easily evaluated without the need of any approximation. We also present some basic but physically meaningful examples where this result is exploited, calculating analytical and numerical bounds on the estimation of the squeezing parameter for a quantum parametric amplifier and of a constant force acting on a mechanical oscillator in a standard optomechanical scenario.

  8. Cramér-Rao lower bound analysis for guidance systems with bearings-only measurements

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yong-an; ZHOU Di; DUAN Guang-ren

    2007-01-01

    Most currently existing investigations on the observability of passive guidance systems can only protimability analysis of closed-loop guidance systems with bearings-only measurements, is proposed. The new method provides an intuitive result for observability of the guidance system through graphical analysis. As a demonstration, a numerical example is presented, in which the degrees of observability of the guidance systems under two commonly used guidance laws are compared by using the new approach.

  9. Recovering Sample Diversity in Rao-Blackwellized Particle Filters for Simultaneous Localization and Mapping

    Science.gov (United States)

    2006-06-01

    111 thuat tvypify eac’h alpproa~c are tile extend~ed Kalman ~ filter (EKE) and tile parti(’le filter. 1.4 EKF SLAM Tile Xailinan filter is at) olptinlal...dliversity, or unique filtr samples after resa in pling. noist he miaiiitained. If not. tc lIeMile is proiie to the mnany side effecs of saniple...situations [39]. 2.1.1 Extended Kalman Filter SLAM The EKF rel)rese’nts thie SLAM posterior distribution as a. hig]-dimensiolal lulti- variate Gaussian

  10. SNR Limits to Achieving the Cramer-Rao Lower Bounds with PCID

    Science.gov (United States)

    2010-01-01

    basel ine casc. 25 eRB·based SNRs versus Normallzod petO variances Normalized PC1D variances normalized frequency versus frequency versus SNRs...supp; true PSF supp: PSFl eRB·based SNRs versus Nonnallzed petD variances Normalized petO variances normalized frequency versus frequency versus SNRs...phol noise; read var ’" 20; true Sample Image reconstruction BiasA 2Nar ·O.IS peto 7.3b supp: hue PSF sUPP; PSFI Normalized PC1D variances versus

  11. 1st Conference of the International Society for Nonparametric Statistics

    CERN Document Server

    Lahiri, S; Politis, Dimitris

    2014-01-01

    This volume is composed of peer-reviewed papers that have developed from the First Conference of the International Society for NonParametric Statistics (ISNPS). This inaugural conference took place in Chalkidiki, Greece, June 15-19, 2012. It was organized with the co-sponsorship of the IMS, the ISI, and other organizations. M.G. Akritas, S.N. Lahiri, and D.N. Politis are the first executive committee members of ISNPS, and the editors of this volume. ISNPS has a distinguished Advisory Committee that includes Professors R.Beran, P.Bickel, R. Carroll, D. Cook, P. Hall, R. Johnson, B. Lindsay, E. Parzen, P. Robinson, M. Rosenblatt, G. Roussas, T. SubbaRao, and G. Wahba. The Charting Committee of ISNPS consists of more than 50 prominent researchers from all over the world.   The chapters in this volume bring forth recent advances and trends in several areas of nonparametric statistics. In this way, the volume facilitates the exchange of research ideas, promotes collaboration among researchers from all over the wo...

  12. Design of multiligand inhibitors for the swine flu H1N1 neuraminidase binding site

    Directory of Open Access Journals (Sweden)

    Narayanan MM

    2013-08-01

    Full Text Available Manoj M Narayanan,1,2 Chandrasekhar B Nair,2 Shilpa K Sanjeeva,2 PV Subba Rao,2 Phani K Pullela,1,2 Colin J Barrow11Centre for Chemistry and Biotechnology, Deakin University, Geelong, VIC, Australia; 2Bigtec Pvt Ltd, Rajajinagar, Bangalore, IndiaAbstract: Viral neuraminidase inhibitors such as oseltamivir and zanamivir prevent early virus multiplication by blocking sialic acid cleavage on host cells. These drugs are effective for the treatment of a variety of influenza subtypes, including swine flu (H1N1. The binding site for these drugs is well established and they were designed based on computational docking studies. We show here that some common natural products have moderate inhibitory activity for H1N1 neuraminidase under docking studies. Significantly, docking studies using AutoDock for biligand and triligand forms of these compounds (camphor, menthol, and methyl salicylate linked via methylene bridges indicate that they may bind in combination with high affinity to the H1N1 neuraminidase active site. These results also indicate that chemically linked biligands and triligands of these natural products could provide a new class of drug leads for the prevention and treatment of influenza. This study also highlights the need for a multiligand docking algorithm to understand better the mode of action of natural products, wherein multiple active ingredients are present.Keywords: neuraminidase, influenza, H1N1, multiligand, binding energy, molecular docking, virus

  13. Review of the genera Hishimonus Ishihara and Litura Knight(Hemiptera: Cicadellidae) from the Indian subcontinent with description of new species.

    Science.gov (United States)

    Viraktamath, C A; Murthy, H V Anantha

    2014-04-03

    This paper deals with 21 species of Hishimonus Ishihara and two species of Litura Knight from the Indian subcontinent. The following new species are described: Hishimonus acuminatus sp. nov. (India: Mizoram), H. distinctus sp. nov. (India: Karnataka, Kerala, Tamil Nadu. Sri Lanka), H. dwipae sp. nov. (Sri Lanka), H. longisetosus sp. nov. (India: Karnataka), H. spicans sp. nov. (India: Karnataka), H. thapai sp. nov. (Nepal), H. zeylanicus sp. nov. (Sri Lanka), and Litura triangula sp. nov. (India: Karnataka). Hishimonus versicolor Subba Rao & Ramakrishnan is removed from the genus Hishimonus and two new combinations namely, Hishimonus apricus (Melichar) comb. nov. (formerly in the genus Eutettix) and Litura tripunctatus (Li) comb. nov. (formerly in the genus Hishimonus) and a new name Hishimonus knightiella nom. nov. for Hishimonus apricus Knight 1970a, not Distant 1908 is proposed. H. gillespiei Dai, Fletcher & Zhang, H. pallidus Dai, Fletcher & Zhang, H. dividens Knight, H. aberrans Knight, H. concavus Knight, H. arcuatus Knight and Litura unda Knight are new records for India. All the taxa are described and new taxa are illustrated. Keys to identification of the species of Hishimonus and Litura found in the Indian subcontinent are also provided along with list of known host plants.

  14. Distribution and abundance of mymarid parasitoids (Hymenoptera: Mymaridae) of Sophonia rufofascia Kuoh and Kuoh (Homoptera: Cicadellidae)in Hawaii

    Science.gov (United States)

    Yang, P.; Foote, D.; Alyokhin, A.V.; Lenz, L.; Messing, R.H.

    2002-01-01

    The abundance of mymarid parasitoids attacking the two-spotted leafhopper (Sophonia rufofascia [Kuoh and Kuoh]), a polyphagous pest recently adventive to Hawaii, was monitored using yellow sticky cards deployed in several areas on the islands of Kauai and Hawaii. The yellow cards captured Chaetomymar sp. nr bagicha Narayanan, Subba Rao, & Kaur and Schizophragma bicolor (Dozier), both adventive species, and Polynema sp. Haliday, which is endemic to Hawaii (Hymenoptera: Mymaridae). The former two species were most abundant at all sites. On Kauai, there was a negative correlation between the captures of C. sp. nr bagicha and those of Polynema sp. Throughout the season, the increase in parasitoid numbers generally followed the increase in leafhopper numbers. C. sp. nr. bagicha and S. bicolor showed distinct habitat preferences. Removal of Myrica faya Aiton, an invasive weed that is a highly preferred two-spotted leafhopper host, decreased the overall numbers of captured parasitoids, but led to a twofold increase in the ratio of trapped parasitoids/hosts in weed-free areas. ?? 2002 Elsevier Science (USA).

  15. The Rao-Blackwellized marginal M-SMC filter for Bayesian multi-target tracking and labelling

    NARCIS (Netherlands)

    Aoki, E.H.; Boers, Y.; Svensson, L.; Mandal, Pranab K.; Bagchi, Arunabha

    2012-01-01

    In multi-target tracking (MTT), we are often interested not only in finding the position of the objects, but also allowing individual objects to be uniquely identified with the passage of time, by placing a label on each track. In some situations, however, observability conditions do not allow us to

  16. Computational intelligence techniques for comparative genomics dedicated to Prof. Allam Appa Rao on the occasion of his 65th birthday

    CERN Document Server

    Gunjan, Vinit

    2015-01-01

    This Brief highlights Informatics and related techniques to Computer Science Professionals, Engineers, Medical Doctors, Bioinformatics researchers and other interdisciplinary researchers. Chapters include the Bioinformatics of Diabetes and several computational algorithms and statistical analysis approach to effectively study the disorders and possible causes along with medical applications.

  17. Radiation safety during remediation of the SevRAO facilities: 10 years of regulatory experience.

    Science.gov (United States)

    Sneve, M K; Shandala, N; Kiselev, S; Simakov, A; Titov, A; Seregin, V; Kryuchkov, V; Shcheblanov, V; Bogdanova, L; Grachev, M; Smith, G M

    2015-09-01

    In compliance with the fundamentals of the government's policy in the field of nuclear and radiation safety approved by the President of the Russian Federation, Russia has developed a national program for decommissioning of its nuclear legacy. Under this program, the State Atomic Energy Corporation 'Rosatom' is carrying out remediation of a Site for Temporary Storage of spent nuclear fuel (SNF) and radioactive waste (RW) at Andreeva Bay located in Northwest Russia. The short term plan includes implementation of the most critical stage of remediation, which involves the recovery of SNF from what have historically been poorly maintained storage facilities. SNF and RW are stored in non-standard conditions in tanks designed in some cases for other purposes. It is planned to transport recovered SNF to PA 'Mayak' in the southern Urals. This article analyses the current state of the radiation safety supervision of workers and the public in terms of the regulatory preparedness to implement effective supervision of radiation safety during radiation-hazardous operations. It presents the results of long-term radiation monitoring, which serve as informative indicators of the effectiveness of the site remediation and describes the evolving radiation situation. The state of radiation protection and health care service support for emergency preparedness is characterized by the need to further study the issues of the regulator-operator interactions to prevent and mitigate consequences of a radiological accident at the facility. Having in mind the continuing intensification of practical management activities related to SNF and RW in the whole of northwest Russia, it is reasonable to coordinate the activities of the supervision bodies within a strategic master plan. Arrangements for this master plan are discussed, including a proposed programme of actions to enhance the regulatory supervision in order to support accelerated mitigation of threats related to the nuclear legacy in the area.

  18. A Cramer Rao analysis on receiver placement in a FM band commensal radar system based on doppler only measurements

    CSIR Research Space (South Africa)

    Maasdorp, FDV

    2014-10-01

    Full Text Available This paper investigates the theoretical placement of receivers in an Commensal Radar (CR), Doppler only tracking system with a single transmitter multiple receiver configuration. Theory, based on the Fisher Information matrix (FIM), is developed...

  19. The Rao-Blackwellized marginal M-SMC filter for Bayesian multi-target tracking and labelling

    NARCIS (Netherlands)

    Aoki, E.H.; Boers, Y.; Svensson, L.; Mandal, P.K.; Bagchi, A.

    2012-01-01

    In multi-target tracking (MTT), we are often interested not only in finding the position of the objects, but also allowing individual objects to be uniquely identified with the passage of time, by placing a label on each track. In some situations, however, observability conditions do not allow us to

  20. A Rao-Blackwellized particle filter for joint parameter estimation and biomass tracking in a stochastic predator-prey system.

    Science.gov (United States)

    Martín-Fernández, Laura; Gilioli, Gianni; Lanzarone, Ettore; Miguez, Joaquin; Pasquali, Sara; Ruggeri, Fabrizio; Ruiz, Diego P

    2014-06-01

    Functional response estimation and population tracking in predator-prey systems are critical problems in ecology. In this paper we consider a stochastic predator-prey system with a Lotka-Volterra functional response and propose a particle filtering method for: (a) estimating the behavioral parameter representing the rate of effective search per predator in the functional response and (b) forecasting the population biomass using field data. In particular, the proposed technique combines a sequential Monte Carlo sampling scheme for tracking the time-varying biomass with the analytical integration of the unknown behavioral parameter. In order to assess the performance of the method, we show results for both synthetic and observed data collected in an acarine predator-prey system, namely the pest mite Tetranychus urticae and the predatory mite Phytoseiulus persimilis.

  1. Acid-base indicators in the venous and arterial blood of horses affected by recurrent airway obstruction (RAO).

    Science.gov (United States)

    Stopyra, A; Sobiech, P; Waclawska-Matyjasik, A

    2012-01-01

    The acid-base equilibrium is closely linked to gas exchange in the lungs, and respiratory exchange ratios are used to evaluate respiratory effectiveness and tissue oxygen levels. Acid-base indicators are determined in both arterial and venous blood samples. This study compares the usefulness of acid-base indicators of venous and arterial blood in monitoring the condition of horses with recurrent airway obstruction. Prior to treatment involving bronchodilating glucocorticoids, expectorant and mucolytic drugs, more pronounced changes were observed in venous blood (pH 7.283, pCO2 61.92 mmHg, pO2 35.541 mmHg, HCO3- 31.933 mmHg, BE 2.933 mmol/l, O2SAT 58.366%, ctCO2 38.333 mmol/l) than in arterial blood (pH 7.309, pCO2 53.478 mmHg, pO2 90.856 mmHg, HCO3- 28.50 mmHg, BE 3.133 mmol/l, O2SAT 93.375%, ctCO2 31.652 mmol/l), indicating compensated respiratory acidosis. The improvement of respiratory efficiency minimized acidosis symptoms in both venous blood (pH 7.365, pCO2 43.55 mmHg, pO2 47.80 mmHg, HCO3 30.325 mmHg, BE 3.050 mmol/l, O2SAT 80.10%, ctCO2 29.80 mmol/l) and arterial blood (pH 7.375, pCO2 39.268 mmHg, pO2 98.476 mmHg, HCO3- 26.651 mmHg, BE 4.956 mmol/l, O2SAT 98.475%, ctCO2 28.131 mmol/l). Venous blood parameters were marked by greater deviations from mean values, both before and after treatment. Acid-base indicators determined in venous blood are indicative of respiratory disturbances, but they do not support a comprehensive evaluation of gas exchange in the lungs.

  2. Testing for Association Using Multiple Response Survey Data: Approximate Procedures Based on the Rao-Scott Approach

    Science.gov (United States)

    Thomas, D. Roland; Decady, Yves J.

    2004-01-01

    This article discusses approximate tests of marginal association in 2-way tables in which one or both response variables admit multiple responses. Although multiple-response questions appear in all fields of research, including sociology, education, and marketing, the development of association tests that can be used with multiple-response data is…

  3. The Rao-Blackwellized marginal M-SMC filter for Bayesian multi-target tracking and labelling

    NARCIS (Netherlands)

    Aoki, E.H.; Boers, Y.; Svensson, L.; Mandal, Pranab K.; Bagchi, Arunabha

    In multi-target tracking (MTT), we are often interested not only in finding the position of the objects, but also allowing individual objects to be uniquely identified with the passage of time, by placing a label on each track. In some situations, however, observability conditions do not allow us to

  4. Identification of top-down forces regulating cotton aphid population growth in transgenic Bt cotton in central China.

    Directory of Open Access Journals (Sweden)

    Peng Han

    Full Text Available The cotton aphid Aphis gossypii Glover is the main aphid pest in cotton fields in the Yangtze River Valley Cotton-planting Zone (YRZ in central China. Various natural enemies may attack the cotton aphid in Bt cotton fields but no studies have identified potential specific top-down forces that could help manage this pest in the YRZ in China. In order to identify possibilities for managing the cotton aphid, we monitored cotton aphid population dynamics and identified the effect of natural enemies on cotton aphid population growth using various exclusion cages in transgenic Cry1Ac (Bt+CpTI (Cowpea trypsin inhibitor cotton field in 2011. The aphid population growth in the open field (control was significantly lower than those protected or restricted from exposure to natural enemies in the various exclusion cage types tested. The ladybird predator Propylaea japonica Thunberg represented 65% of Coccinellidae predators, and other predators consisted mainly of syrphids (2.1% and spiders (1.5%. The aphid parasitoids Aphidiines represented 76.7% of the total count of the natural enemy guild (mainly Lysiphlebia japonica Ashmead and Binodoxys indicus Subba Rao & Sharma. Our results showed that P. japonica can effectively delay the establishment and subsequent population growth of aphids during the cotton growing season. Aphidiines could also reduce aphid density although their impact may be shadowed by the presence of coccinellids in the open field (likely both owing to resource competition and intraguild predation. The implications of these results are discussed in a framework of the compatibility of transgenic crops and top-down forces exerted by natural enemy guild.

  5. Identification of top-down forces regulating cotton aphid population growth in transgenic Bt cotton in central China.

    Science.gov (United States)

    Han, Peng; Niu, Chang-ying; Desneux, Nicolas

    2014-01-01

    The cotton aphid Aphis gossypii Glover is the main aphid pest in cotton fields in the Yangtze River Valley Cotton-planting Zone (YRZ) in central China. Various natural enemies may attack the cotton aphid in Bt cotton fields but no studies have identified potential specific top-down forces that could help manage this pest in the YRZ in China. In order to identify possibilities for managing the cotton aphid, we monitored cotton aphid population dynamics and identified the effect of natural enemies on cotton aphid population growth using various exclusion cages in transgenic Cry1Ac (Bt)+CpTI (Cowpea trypsin inhibitor) cotton field in 2011. The aphid population growth in the open field (control) was significantly lower than those protected or restricted from exposure to natural enemies in the various exclusion cage types tested. The ladybird predator Propylaea japonica Thunberg represented 65% of Coccinellidae predators, and other predators consisted mainly of syrphids (2.1%) and spiders (1.5%). The aphid parasitoids Aphidiines represented 76.7% of the total count of the natural enemy guild (mainly Lysiphlebia japonica Ashmead and Binodoxys indicus Subba Rao & Sharma). Our results showed that P. japonica can effectively delay the establishment and subsequent population growth of aphids during the cotton growing season. Aphidiines could also reduce aphid density although their impact may be shadowed by the presence of coccinellids in the open field (likely both owing to resource competition and intraguild predation). The implications of these results are discussed in a framework of the compatibility of transgenic crops and top-down forces exerted by natural enemy guild.

  6. First Records ofMegophrys daweimontis Rao and Yang, 1997 andAmolops vitreus (Bain, Stuart and Orlov, 2006) (Anura:Megophryidae, Ranidae) from Vietnam

    Institute of Scientific and Technical Information of China (English)

    Dzung Trung LE; Anh Van PHAM; Son Hung Lan NGUYEN; Thomas ZIEGLER; Truong Quang NGUYEN

    2015-01-01

    Two amphibian species,Megophrys daweimontisandAmolops vitreus,are recorded for the ifrst time from Vietnam, on the basis of a new amphibian collection from Dien Bien and Son La provinces. In addition, acoustic analysis ofA. vitreus is also provided based on the advertisement calls recorded in Muong Nhe Nature Reserve of Dien Bien Province, Vietnam.

  7. Development of TIMP1 magnetic nanoformulation for regulation of synaptic plasticity in HIV-1 infection

    Directory of Open Access Journals (Sweden)

    Atluri VSR

    2016-08-01

    Full Text Available Venkata Subba Rao Atluri* Rahul Dev Jayant* Sudheesh Pilakka-Kanthikeel, Gabriella Garcia, Thangavel Samikkannu, Adriana Yndart, Ajeet Kaushik, Madhavan Nair Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA *These authors contributed equally to this work Abstract: Although the introduction of antiretroviral therapy has reduced the prevalence of severe forms of neurocognitive disorders, human immunodeficiency virus (HIV-1-associated neurocognitive disorders were observed in 50% of HIV-infected patients globally. The blood–brain barrier is known to be impermeable to most of antiretroviral drugs. Successful delivery of antiretroviral drugs into the brain may induce an inflammatory response, which may further induce neurotoxicity. Therefore, alternate options to antiretroviral drugs for decreasing the HIV infection and neurotoxicity may help in reducing neurocognitive impairments observed in HIV-infected patients. In this study, we explored the role of magnetic nanoparticle (MNP-bound tissue inhibitor of metalloproteinase-1 (TIMP1 protein in reducing HIV infection levels, oxidative stress, and recovering spine density in HIV-infected SK-N-MC neuroblastoma cells. We did not observe any neuronal cytotoxicity with either the free TIMP1 or MNP-bound TIMP1 used in our study. We observed significantly reduced HIV infection in both solution phase and in MNP-bound TIMP1-exposed neuronal cells. Furthermore, we also observed significantly reduced reactive oxygen species production in both the test groups compared to the neuronal cells infected with HIV alone. To observe the effect of both soluble-phase TIMP1 and MNP-bound TIMP1 on spine density in HIV-infected neuronal cells, confocal microscopy was used. We observed significant recovery of spine density in both the test groups when compared to the cells infected with HIV alone, indicting the

  8. Lood ajast ja elust / Indrek Rohtmets

    Index Scriptorium Estoniae

    Rohtmets, Indrek, 1953-

    2008-01-01

    Joonisfilm "Elulood" : stsenaristid Rao Heidmets ja Mats Traat : režissöör Rao Heidmets : kunstnik Ave Nahkur : helilooja Olav Ehala : Rao Heidmetsa Filmistuudio, 2007. Lk. 111-112 lühidalt R. Heidmetsa biograafia ja filmograafia

  9. EDITORIAL: Focus on Visualization in Physics FOCUS ON VISUALIZATION IN PHYSICS

    Science.gov (United States)

    Sanders, Barry C.; Senden, Tim; Springel, Volker

    2008-12-01

    the following features highlighting work in this collection and other novel uses of visualization techniques: 'A feast of visualization' Physics World December 2008 pp 20 23 'Seeing the quantum world' by Barry Sanders Physics World December 2008 pp 24 27 'A picture of the cosmos' by Mark SubbaRao and Miguel Aragon-Calvo Physics World December 2008 pp 29 32 'Thinking outside the cube' by César A Hidalgo Physics World December 2008 pp 34 37 Focus on Visualization in Physics Contents Visualization of spiral and scroll waves in simulated and experimental cardiac tissue E M Cherry and F H Fenton Visualization of large scale structure from the Sloan Digital Sky Survey M U SubbaRao, M A Aragón-Calvo, H W Chen, J M Quashnock, A S Szalay and D G York How computers can help us in creating an intuitive access to relativity Hanns Ruder, Daniel Weiskopf, Hans-Peter Nollert and Thomas Müller Lagrangian particle tracking in three dimensions via single-camera in-line digital holography Jiang Lu, Jacob P Fugal, Hansen Nordsiek, Ewe Wei Saw, Raymond A Shaw and Weidong Yang Quantifying spatial heterogeneity from images Andrew E Pomerantz and Yi-Qiao Song Disaggregation and scientific visualization of earthscapes considering trends and spatial dependence structures S Grunwald Strength through structure: visualization and local assessment of the trabecular bone structure C Räth, R Monetti, J Bauer, I Sidorenko, D Müller, M Matsuura, E-M Lochmüller, P Zysset and F Eckstein Thermonuclear supernovae: a multi-scale astrophysical problem challenging numerical simulations and visualization F K Röpke and R Bruckschen Visualization needs and techniques for astrophysical simulations W Kapferer and T Riser Flow visualization and field line advection in computational fluid dynamics: application to magnetic fields and turbulent flows Pablo Mininni, Ed Lee, Alan Norton and John Clyne Splotch: visualizing cosmological simulations K Dolag, M Reinecke, C Gheller and S Imboden Visualizing a silicon

  10. Eesti filmid silmale, mõttele, suunurgale ja põselohule / Jan Kaus

    Index Scriptorium Estoniae

    Kaus, Jan, 1971-

    2003-01-01

    Kolm Eesti Joonisfilmis ja Nukufilmis valminud animafilmi esilinastusid kinos Kosmos : Priit Pärna "Karl ja Marilyn", Rao Heidmetsa "Instinkt" (kunstnik Navitrolla) ja Ülo Pikkovi "Ahviaasta". Näidati ka eelreklaamita Rao Heidmetsa filmi "Frank Mulleri kellad"

  11. Headus koomilises kuues / Rein Tootmaa

    Index Scriptorium Estoniae

    Tootmaa, Rein

    2002-01-01

    Rao Heidmetsa lühimängufilm lastele "Heinaloom" : dialoogid Andrus Kivirähk : operaator Mait Mäekivi : Rao Heidmetsa Filmistuudio OÜ 2001. Ka Heidmetsa filmograafia. Kokkuvõte inglise keeles lk. 96

  12. Apports du bilan étiologique des occlusions de l'artère centrale de la rétine et de ses branches et conséquences thérapeutiques

    DEFF Research Database (Denmark)

    Coisy, S; Leruez, S; Ebran, J-M;

    2013-01-01

    Retinal artery occlusions (RAO) are severe conditions threatening vision, affecting the subsequent mortality of these patients.......Retinal artery occlusions (RAO) are severe conditions threatening vision, affecting the subsequent mortality of these patients....

  13. Total Hip Arthroplasty after Previous Acetabular Osteotomy: Comparison of Three Types of Acetabular Osteotomy.

    Science.gov (United States)

    Tamaki, Tatsuya; Oinuma, Kazuhiro; Miura, Yoko; Shiratsuchi, Hideaki

    2016-01-01

    To compare surgical results of total hip arthroplasty (THA) following acetabular osteotomy, operative records of 13 hips following Chiari osteotomy (Chiari group), 22 hips following rotational periacetabular osteotomy (RAO; RAO group), 16 hips following shelf acetabuloplasty (Shelf group), and 2475 hips without previous osteotomy (Control group) were retrospectively reviewed. The operative time was significantly longer in the RAO group than in the Control group. Bulk bone augmentation was required more often in the Chiari and RAO groups than in the Control group. An early migration of the acetabular cup occurred in 2 hips in the RAO group. RAO made conversion to THA more complicated than did the Chiari osteotomy or the shelf acetabuloplasty. Copyright © 2016 Elsevier Inc. All rights reserved.

  14. Structure- and isoform-specific glucuronidation of six curcumin analogs.

    Science.gov (United States)

    Lu, Danyi; Liu, Hui; Ye, Wencai; Wang, Ying; Wu, Baojian

    2017-04-01

    1. In the present study, we aimed to characterize the glucuronidation of six curcumin analogs (i.e. RAO-3, RAO-8, RAO-9, RAO-18, RAO-19, and RAO-23) derived from galangal using human liver microsomes (HLM) and twelve expressed UGT enzymes. 2. Formation of glucuronide was confirmed using high-resolution mass spectrometry. Single glucuronide metabolite was generated from each of six curcumin analogs. The fragmentation patterns were analyzed and were found to differ significantly between alcoholic and phenolic glucuronides. 3. All six curcumin analogs except one (RAO-23) underwent significant glucuronidation in HLM and expressed UGT enzymes. In general, the methoxy group (close to the phenolic hydroxyl group) enhanced the glucuronidation liability of the curcumin analogs. 4. UGT1A9 and UGT2B7 were primarily responsible for the glucuronidation of two alcoholic analogs (RAO-3 and RAO-18). By contrast, UGT1A9 and four UGT2Bs (UGT2B4, 2B7, 2B15 and 2B17) played important roles in conjugating three phenolic analogs (RAO-8, RAO-9, and RAO-19). Interestingly, the conjugated double bonds system (in the aliphatic chain) was crucial to the substrate selectivity of gastrointestinal UGTs (i.e. UGT1A7, 1A8 and 1A10). 5. In conclusion, glucuronidation of six curcumin analogs from galangal were structure- and isoform-specific. The knowledge should be useful in identifying a curcumin analog with improved metabolic property.

  15. Procurement of a Nanoindenter for Structure-Function Analyses of Biologically Inspired High Performance Composite Materials

    Science.gov (United States)

    2012-01-13

    Zavattieri (Purdue University), Dr. Ali Miserez (Nanyang University), Dr. Dimitri Deheyn (Scripps, UCSD), Dr. Masa Rao (UCR). Finally, through the...Chitons. The fourth project, to be performed in collaboration with Professor Masa Rao at UCR, would investigate micro-and nano-mechanical properties...Miserez (Nanyang University), Dr. Dimitri Deheyn (Scripps, UCSD), Dr. Masa Rao (UCR). Finally, through the procurement of this instrument, the data we

  16. Variations in nearshore processes along Nagapattinam coast, India

    Digital Repository Service at National Institute of Oceanography (India)

    SanilKumar, V; Anand, N.M.; Gowthaman, R.

    Rao, D. S., Veeraswamy, K. and Sarma, M. R. L., Geol. Soc. India , Mem. , 1987, 6 , 295 ? 312. 7. Mishra, D. C., Babu Rao, V., Laxman, G., Rao, M. B. S. V. and Venkatarayadu, M., Geol. Soc. India , Mem. , 1987, 6, 313 ? 330. 8.... Balakrishna, S., Christopher, G. and Ramana Rao, A. V., Proceedings of the Sympo sium on Upper Mantle Project, NGRI Publ., 1967, vol. 8, pp. 303 ? 319. 9. Kailasam, L. N., Tectonophysics , 1976, 76 , 225 ? 245. 10. Krishna Brahmam, N., J. Geol...

  17. Librarians as Information Miners: The Case of Nigeria

    African Journals Online (AJOL)

    retrieve data effectively in a variety of information retrieval systems” (Morris, 1999 in Rao & ... now have a new breed of cyber librarians who Hathorn (1997), as cited by Rao and Babu .... What is the place of physical books in all of these?

  18. Crack Propagation in Compressor Rotor Blade

    Science.gov (United States)

    2012-08-01

    by local Public Affairs Office) 13. SUPPLEMENTARY NOTES 14. ABSTRACT Turbomachine blading crack propagation and initiations are one of...the most important problems. Design, operation and modernization of the contemporary turbomachines are impossible without a detailed numerical and...Rao, J. S., Turbine Blade Life Estimation, Narosa Publishing House, (2000). Rao, J. S., Narayan, R. and Ranjith, M. C., Lifing of Turbomachine

  19. Distance Learning in Micronesia: Participants' Experiences in a Virtual Classroom Using Synchronous Technologies

    Science.gov (United States)

    Rao, Kavita

    2007-01-01

    In this article, Kavita Rao describes a distance learning course offered to K-8 teachers in Micronesia that focused on the use of synchronous technologies to address cultural learning preferences for face-to-face and real-time communication. Rao presents a case study of the course that was conducted on the islands of Pohnpei and Ebeye.…

  20. CMS Observes Single Top-Quark

    CERN Multimedia

    2011-01-01

      One of the many excellent results harvested by CMS from 2010 data. (Figure shows events vs cosine of the angle between lepton and light jets in t rest-frame.)   If you have any comments / suggestions please contact the editors: Marzena Lapka (marzena.lapka@cern.ch) and Achintya Rao (achintya.rao@cern.ch)  

  1. A productive year for CMS

    CERN Multimedia

    2010-01-01

      Some of the many results obtained by CMS since the start of data-taking in 2010. If you have any comments / suggestions please contact the editors: Marzena Lapka (marzena.lapka@cern.ch) and Achintya Rao (achintya.rao@cern.ch)

  2. Dicty_cDB: CHL626 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available AW871214 |AW871214.1 ra56d01.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne incognita cDNA 5' similar to ... AW829376 |AW829376.1 ra39d01.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne incognita cDNA 5' similar to

  3. Dicty_cDB: CHG178 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 18 2 AW828903 |AW828903.1 ra69e06.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyn...NA sequence. 76 2e-11 2 AW871512 |AW871512.1 ra78g07.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne incogn

  4. Dicty_cDB: CHO517 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available lone RP11-560G8 on chromosome 9. 48 0.18 1 AW829533 |AW829533.1 ra41c11.y1 Bird-Rao Meloidogyne incognita J2...1 2 AW830038 |AW830038.1 ra48h04.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne

  5. Dicty_cDB: VHF141 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available nce from clone RP11-560G8 on chromosome 9. 48 0.23 3 AW829533 |AW829533.1 ra41c11.y1 Bird-Rao Meloidogyne in...ce. 32 0.74 2 AW830038 |AW830038.1 ra48h04.y1 Bird-Rao Meloidogyne incognita J2 M

  6. The Impact of Expressiveness on the Effectiveness of Privacy Mechanisms for Location Sharing

    Science.gov (United States)

    2008-12-01

    relations: Why, when, & what people want to share. In CHI ’05, 2005. [8] Jason Cornwell, Ian Fette, Gary Hsieh, Madhu Prabaker, Jinghai Rao, Karen Tang...Lorrie Cranor, Ian Fette, Patrick Kelley, Madhu Prabaker, and Jinghai Rao. Understanding and capturing people’s privacy policies in a people finder

  7. Rayleigh lidar investigation of sudden stratospheric warming observed over northern and southern hemisphere stations

    CSIR Research Space (South Africa)

    Sivakumar, V

    2006-07-01

    Full Text Available of sudden stratospheric warming observed over Northern and Southern hemisphere stations V. SIVAKUMAR1,2, H. Bencherif1, D.V.Acharyulu1, A. Hauchecorne3, D.N. Rao4, S. Sharma5 and P. B. Rao6 (1) Laboratoire de l’Atmosphère et des cyclones CNRS–UMR 8105...

  8. Dicty_cDB: Contig-U06283-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available Gossypium arboreum 7-10 dpa fiber ... 46 2.3 1 ( AW828708 ) ra73a06.y1 Bird-Rao M...eloidogyne incognita J2 Melo... 46 2.3 1 ( AW588731 ) ra03h10.y2 Bird-Rao Meloidogyne incognita J2 Melo... 4...6 2.3 1 ( AW571369 ) ra19f03.y2 Bird-Rao Meloidogyne incognita J2 Melo... 46 2.3 1 ( AW571332 ) ra19a06.y2 Bird...-Rao Meloidogyne incognita J2 Melo... 46 2.3 1 ( AW571277 ) ra16d05.y2 Bird-Ra...o Meloidogyne incognita J2 Melo... 46 2.3 1 ( AW571037 ) ra15d12.y1 Bird-Rao Meloidogyne incognita J2 Melo..

  9. Dicty_cDB: Contig-U09378-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available opersic... 46 2.3 1 ( BM881244 ) rb07f12.y1 Meloidogyne incognita egg pAMP1 Bird ...M... 46 2.3 1 ( AW588897 ) ra06g01.y2 Bird-Rao Meloidogyne incognita J2 Melo... 46 2.3 1 ( AW588744 ) ra04b11.y2 Bird...-Rao Meloidogyne incognita J2 Melo... 46 2.3 1 ( AW588613 ) ra01b10.y2 Bird-Rao Meloidogyne incogni...ta J2 Melo... 46 2.3 1 ( AW571380 ) ra19g07.y2 Bird-Rao Meloidogyne incognita J2 Melo... 46 2.3 1 ( AW571289 ) ra16e06.y2 Bird...-Rao Meloidogyne incognita J2 Melo... 46 2.3 1 ( AW571260 ) ra16b10.y2 Bird

  10. Investigation of Response Amplitude Operators for Floating Offshore Wind Turbines: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Ramachandran, G. K. V.; Robertson, A.; Jonkman, J. M.; Masciola, M. D.

    2013-07-01

    This paper examines the consistency between response amplitude operators (RAOs) computed from WAMIT, a linear frequency-domain tool, to RAOs derived from time-domain computations based on white-noise wave excitation using FAST, a nonlinear aero-hydro-servo-elastic tool. The RAO comparison is first made for a rigid floating wind turbine without wind excitation. The investigation is further extended to examine how these RAOs change for a flexible and operational wind turbine. The RAOs are computed for below-rated, rated, and above-rated wind conditions. The method is applied to a floating wind system composed of the OC3-Hywind spar buoy and NREL 5-MW wind turbine. The responses are compared between FAST and WAMIT to verify the FAST model and to understand the influence of structural flexibility, aerodynamic damping, control actions, and waves on the system responses. The results show that based on the RAO computation procedure implemented, the WAMIT- and FAST-computed RAOs are similar (as expected) for a rigid turbine subjected to waves only. However, WAMIT is unable to model the excitation from a flexible turbine. Further, the presence of aerodynamic damping decreased the platform surge and pitch responses, as computed by both WAMIT and FAST when wind was included. Additionally, the influence of gyroscopic excitation increased the yaw response, which was captured by both WAMIT and FAST.

  11. Human retina-specific amine oxidase: genomic structure of the gene (AOC2), alternatively spliced variant, and mRNA expression in retina.

    Science.gov (United States)

    Imamura, Y; Noda, S; Mashima, Y; Kudoh, J; Oguchi, Y; Shimizu, N

    1998-07-15

    Previously, we reported the isolation of cDNA for human retina-specific amine oxidase (RAO) and the expression of RAO exclusively in retina. Bacterial artificial chromosome clones containing the human RAO gene (AOC2) were mapped to human chromosome 17q21 (Imamura et al., 1997, Genomics 40: 277-283). Here, we report the complete genomic structure of the RAO gene, including 5' flanking sequence, and mRNA expression in retina. The human RAO gene spans 6 kb and is composed of four exons corresponding to the amino acid sequence 1-530, 530-598, 598-641, and 642-729 separated by three introns of 3000, 310, and 351 bp. Screening of a human retina cDNA library revealed the existence of an alternatively spliced cDNA variant with an additional 81 bp at the end of exon 2. The sizes of exons and the locations of exon/intron boundaries in the human RAO gene showed remarkable similarity to those of the human kidney diamine oxidase gene (AOC1). In situ hybridization revealed that mRNA coding for RAO is expressed preferentially in the ganglion cell layer of the mouse retina. We designed four sets of PCR primers to amplify four exons, which will be valuable for analyzing mutations in patients with ocular diseases affecting the retinal ganglion cell layer.

  12. Incidence and outcome of radial artery occlusion following transradial artery coronary angioplasty.

    Science.gov (United States)

    Stella, P R; Kiemeneij, F; Laarman, G J; Odekerken, D; Slagboom, T; van der Wieken, R

    1997-02-01

    Coronary angioplasty with 6F guiding catheters via the radial artery is associated with a minimal risk for major entry site-related complications. Although the incidence of radial artery occlusion (RAO) in the literature is approximately 30% after prolonged cannulations, little is known about the incidence and its clinical consequences of RAO following transradial percutaneous coronary angioplasty. In a prospective study, 563 patients with a normal Allen test were evaluated on patency and function of the radial artery after transradial angioplasty, by physical and ultrasound examination at discharge, and at 1 month follow-up. At discharge, 30 patients (5.3%) had clinical evidence of RAO. At follow-up, persistent RAO was found in 16 patients (2.8%). In this study we found a low incidence of RAO after transradial percutaneous coronary angioplasty. None of the patients with temporary or persistent RAO had any major clinical symptoms. Therefore, the occurrence of RAO can be considered a minor complication in patients with a previously good double blood supply to the hand.

  13. Chlamydophila spp. infection in horses with recurrent airway obstruction: similarities to human chronic obstructive disease

    Directory of Open Access Journals (Sweden)

    Hotzel Helmut

    2008-01-01

    Full Text Available Abstract Background Recurrent airway obstruction (RAO in horses is a naturally occurring dust-induced disease mainly characterized by bronchiolitis which shows histological and pathophysiological similarities to human chronic obstructive pulmonary disease (COPD. In human COPD previous investigations indicated an association with Chlamydophila psittaci infection. The present study was designed (1 to clarify a possible role of this infectious agent in RAO and (2 to investigate the suitability of this equine disorder as a model for human COPD. Methods Clinico-pathological parameters of a total of 45 horses (25 horses with clinical signs of RAO and 20 clinically healthy controls were compared to histological findings in lung tissue samples and infection by Chlamydiaceae using light microscopy, immunohistochemistry, and PCR. Results Horses with clinical signs of RAO vs. controls revealed more inflammatory changes in histology (p = 0.01, and a higher detection rate of Chlamydia psittaci antigens in all cells (p OmpA sequencing identified Chlamydophila psittaci (n = 9 and Chlamydophila abortus (n = 13 in both groups with no significant differences. Within the group of clinically healthy horses subgroups with no changes (n = 15 and slight inflammation of the small airways (n = 5 were identified. Also in the group of animals with RAO subgroups with slight (n = 16 and severe (n = 9 bronchiolitis could be formed. These four subgroups can be separated in parts by the number of cells positive for Chlamydia psittaci antigens. Conclusion Chlamydophila psittaci or abortus were present in the lung of both clinically healthy horses and those with RAO. Immunohistochemistry revealed acute chlamydial infections with inflammation in RAO horses, whereas in clinically healthy animals mostly persistent chlamydial infection and no inflammatory reactions were seen. Stable dust as the known fundamental abiotic factor in RAO is comparable to smoking in human disease. These

  14. Paroxysmal atrial fibrillation and clinically reversible cor pulmonale in a horse with complicated recurrent airway obstruction.

    Science.gov (United States)

    Hanka, J; van den Hoven, R; Schwarz, B

    2015-01-01

    Cor pulmonale is considered an uncommon complication in horses with recurrent airway obstruction (RAO). This case report describes the history, clinical and further examination findings, treatment, progression and outcome of a horse diagnosed with cor pulmonale and paroxysmal atrial fibrillation of 2 days duration due to a severe exacerbation of RAO. To our best knowledge, this is the first report of RAO induced pulmonary hypertension in a horse causing atrial fibrillation. However, even severe cardiac changes due to respiratory dysfunction seem to be largely reversible in horses.

  15. Dicty_cDB: SHG483 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 2J21 from chromosome 6, complete sequence. 38 1.2 2 AW871630 |AW871630.1 ra80c01.y1 Bird-Rao Meloidogyne inc...OTIDE PHOSPHODIESTERASE ;, mRNA sequence. 44 3.5 1 AW871214 |AW871214.1 ra56d01.y1 Bird-Rao Meloidogyne inco...RNA sequence. 44 3.5 1 AW829376 |AW829376.1 ra39d01.y1 Bird-Rao Meloidogyne incog

  16. Comment on Effects of transverse magnetic field on mixed convection in wall plume of power-law fluids, by Gorla, Lee, Nakamura and Pop, IJES, 1993

    CERN Document Server

    Pantokratoras, Asterios

    2007-01-01

    Comment on Effects of transverse magnetic field on mixed convection in wall plume of power-law fluids, by Rama Subba Reddy Gorla, Jin Kook Lee, Shoichiro Nakamura and Ioan Pop [International Journal of Engineering Science, 31 (1993) 1035-1045]. In the above paper the authors treat the boundary layer mixed convection flow of a power-law fluid along a vertical adiabatic surface in a transverse magnetic field with a steady thermal source at the leading edge. The governing non-similar equations are solved by means of a novel finite difference scheme. However, there are two fundamental errors in this paper and the presented results do not have any practical value.

  17. Eesti animafilmid võistlevad Stuttgardis

    Index Scriptorium Estoniae

    2004-01-01

    Stuttgardi animafilmide festivali võistlusprogrammis on Eestist Rao Heidmetsa "Instinkt" ja Hardi Volmeri "Barbarid" stuudiolt Nukufilm ja Priit Pärna "Karl ja Marilyn" ning Ülo Pikkovi "Ahviaasta" Eesti Joonisfilmilt

  18. Valik uusi Eesti animafilme jõuab täna ETV ekraanile

    Index Scriptorium Estoniae

    pPIK mare 2010

    2006-01-01

    ETV näitab kuut eesti uut animafilmi : Mati Küti "Une instituut", Rao Heidmetsa "Pärlimees", Pärtel Talli "Teatriporgand", Riho Undi "Vennad Karusüdamed", Priit Tenderi "Sõnum naabritele", Mait Laasi "Generatsioon"

  19. 97,4 filmi päevas ja nii 17 päeva jutti / Tiit Tuumalu

    Index Scriptorium Estoniae

    Tuumalu, Tiit, 1971-

    2008-01-01

    Rao Heidmets oli Hiroshima animafestivali valikukomisjonis, kus jäi sõelale ka Ülo Pikkovi "Dialogos". 7.-11. augustini toimuval festivalil on ka Heidmetsa filmiprogramm ("Instinkt", "Kaasasündinud kohustused")

  20. Uutes eesti nukufilmides mängivad näitlejad / Kristiina Davidjants

    Index Scriptorium Estoniae

    Davidjants, Kristiina, 1974-

    2008-01-01

    Rao Heidmetsa filmist "Kaasasündinud kohustused" ja Riho Undi nukufilmist "Lili" : Nukufilm 2008. Mõlemad esilinastuvad täna kinos Sõprus. Stuudio Nukufilm tegevusest, tööst 3D-animatsiooni kallal

  1. The Special Broadcasting Service and Australia's Ethnic Broadcasting Activities.

    Science.gov (United States)

    Sklovsky, G.A.

    1979-01-01

    Broadcasting services for non-English speaking peoples in Australia are reviewed both for radio and television. Broadcasting criteria for ethnic groups, funding levels, and current facilities are discussed. (RAO)

  2. Polishing Your Transparencies: Mounting, Masking, Overlays.

    Science.gov (United States)

    Jobe, Holly; Cannon, Glenn

    This brief guide discusses the mounting of overhead transparencies on frames, the types of mounts, the proper masking for presentation, and the use of overlays. Numerous line drawings provide the reader with a helpful visual reference. (RAO)

  3. Elucidation of physico-chemical characteristics and mycoflora of ...

    African Journals Online (AJOL)

    MICHAEL HORSFALL

    Elucidation of physico-chemical characteristics and mycoflora of bovine milk available in selected area of ... Recently. Rao et al., (2009) has identified aflatoxins producing .... made by means of morphological and microscopic properties with ...

  4. CAS Scientist Receives Trieste Science Prize

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ RAO Zihe, director of the CAS Institute of Biophysics and CAS Member, has been awarded the 2006Trieste Science Prize for "his worldclass contributions to structural biology and his studies of viruses responsible for human diseases."

  5. Impact of parathion exposure on some biochemical parameters in ...

    African Journals Online (AJOL)

    Nagat Aly

    2014-09-16

    Sep 16, 2014 ... Aim: The aim of this study was to investigate the impact of repeated sublethal ... Conclusion: The results indicated that changes in body and organ weights have ..... other hand, Sushma and Rao27 found that aluminum acetate.

  6. TVOntario From Dostoyevsky to Donald Duck

    Science.gov (United States)

    Dampier, William

    1978-01-01

    Ontario's educational television station, TVO, has developed into one of the most exciting broadcasters in North America. Federally licensed and provincially controlled, the Toronto based system achieves quality programming amidst a maze of 22-channel offerings. (RAO)

  7. Controls on organic carbon distribution in sediments from the eastern Arabian Sea margin

    Digital Repository Service at National Institute of Oceanography (India)

    Thamban, M.; Rao, V.P.; Raju, S.V.

    , ”vigerina sp., coiled mol- lusks, pelecypods, gastropods, and shell debris become prominent. Borings on shells and a few cemented foraminiferal aggregates, phosphatized coprolites, and corals encrusted on small gastropods (Rao et al. 1995) occur at certain...

  8. Eesti animafilm osales Annecys

    Index Scriptorium Estoniae

    2004-01-01

    Animafilmifestivalil Annecys osales neli Eesti filmi : Priit Pärna joonisfilm "Karl ja Marilyn", Rao Heidmetsa nukufilm "Instinkt", David Snowmani joonisfilm "Frank ja Wendy. Hungerburger" ja Meelis Arulepa reklaamfilm "Animated Dreams 2003"

  9. A spatiotemporal analysis of the effect of ambient temperatures on ...

    African Journals Online (AJOL)

    Julian Smit

    Development of the 1-meter aperture Lunar Laser Ranging (LLR) telescope is underway at the Hartebeesthoek Radio Astronomy Observatory (HartRAO) which is expected to achieve sub-centimeter range ...... Education India. Mittag, M.

  10. A Guide to Making an Audio Tape.

    Science.gov (United States)

    Jobe, Holly; Cannon, Glenn

    This brief introduction to the use of audiotape recorders in educational settings provides basic information on operational procedures and recording techniques for voice, music, dubbing, and pulsing. Audiotape editing and splicing are also explained. (RAO)

  11. The Teacher-Student Relationship in Experiential Classes and the Student's Perception of Course Effectiveness.

    Science.gov (United States)

    Kelley, Lane; Whatley, Arthur

    1980-01-01

    This study, which used as subjects 89 undergraduate students in a personnel management course, indicated that the emotional relationship between teacher and student is related to the student's perception of the effectiveness of experiential learning. (RAO)

  12. Folginoppeid / Märt-Matis Lill

    Index Scriptorium Estoniae

    Lill, Märt-Matis, 1975-

    2009-01-01

    Muljeid Viljandi pärimusmuusikafestivalilt. Pikemalt soomlase J. Karjalaise, indiaanlase Lendava Kotka, rootsi löökpillimängija Petter Berndaleni, india interpreetide Shubhendra Rao ja Satyajit Talwalkari kontsertidest

  13. Eesti nukufilm jälle edukas

    Index Scriptorium Estoniae

    2004-01-01

    Argentiinas Buenos Airese laste- ja noortefilmide festivalil sai Pärtel Talli plastiliinitehnikas nukufilm "Porgand!" parima lühifilmi preemia ning katoliikliku meediaorganisatsiooni Signis eripreemia. Žürii eripreemia sai Rao Heidmetsa "Instinkt"

  14. Alteration of kafirin and kafirin film structure by heating with microwave energy and tannin complexation

    CSIR Research Space (South Africa)

    Byaruhanga, YB

    2006-06-14

    Full Text Available . R.; Rao, G. R. Vibrational analysis of substituted phenols, Part I, vibrational spectra, normal coordinate analysis and transferability of force constants of some formyl, methoxy-, formylmethoxy-, methyl- and halogeno-phenols. Spectrochim. Acta...

  15. 97,4 filmi päevas ja nii 17 päeva jutti / Tiit Tuumalu

    Index Scriptorium Estoniae

    Tuumalu, Tiit, 1971-

    2008-01-01

    Rao Heidmets oli Hiroshima animafestivali valikukomisjonis, kus jäi sõelale ka Ülo Pikkovi "Dialogos". 7.-11. augustini toimuval festivalil on ka Heidmetsa filmiprogramm ("Instinkt", "Kaasasündinud kohustused")

  16. Dicty_cDB: Contig-U02317-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available ) rb18a09.y1 Meloidogyne incognita egg pAMP1 Bird M... 44 8.1 1 ( BM774742 ) ra97b02.y1 Meloidogyne incognita egg pAMP1 Bird... M... 44 8.1 1 ( AW571311 ) ra16g10.y2 Bird-Rao Meloidogyne incognita J2 Melo... 44 8.1 1 (... AW571255 ) ra16b04.y2 Bird-Rao Meloidogyne incognita J2 Melo... 44 8.1 1 ( AW570934 ) ra13a02.y1 Bird...-Rao Meloidogyne incognita J2 Melo... 44 8.1 1 ( AW570774 ) ra10g11.y1 Bird-Rao Meloido

  17. Eesti animafilm osales Annecys

    Index Scriptorium Estoniae

    2004-01-01

    Animafilmifestivalil Annecys osales neli Eesti filmi : Priit Pärna joonisfilm "Karl ja Marilyn", Rao Heidmetsa nukufilm "Instinkt", David Snowmani joonisfilm "Frank ja Wendy. Hungerburger" ja Meelis Arulepa reklaamfilm "Animated Dreams 2003"

  18. Enhancement of heat transfer using varying width twisted tape inserts

    African Journals Online (AJOL)

    user

    They reported that friction factor rise due to inclusion of inserts was ... Dasmahapatra and Rao (1991) studied augmentation of heat transfer to viscous non- .... constant throughout the tube length by brazing metal pins to the edges of the tape.

  19. An Experiment in Architectural Instruction.

    Science.gov (United States)

    Dvorak, Robert W.

    1978-01-01

    Discusses the application of the PLATO IV computer-based educational system to a one-semester basic drawing course for freshman architecture, landscape architecture, and interior design students and relates student reactions to the experience. (RAO)

  20. Dehumanize at Your Own Risk

    Science.gov (United States)

    Driscoll, John P.

    1978-01-01

    With the expansion of the technological revolution, the danger of dehumanization is ever present. Governmental domination of individual and social thought, coupled with economic manipulation, are areas of concern relating to basic educational philosophy. (RAO)

  1. DMPD: IRAK1: a critical signaling mediator of innate immunity. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available 17890055 IRAK1: a critical signaling mediator of innate immunity. Gottipati S, Rao ...IRAK1: a critical signaling mediator of innate immunity. PubmedID 17890055 Title IRAK1: a critical signaling media

  2. The Lost and Found Holy Grail: Some Reflections on Accountability

    Science.gov (United States)

    Schwartz, Judah L.

    1978-01-01

    Professional educators as goal formulators are presented as the responsible agents of accountability. Norm- and criterion-referenced testing are compared and suggestions for accountability and goal development are given. (RAO)

  3. Eesti Energia tahab elektrit toota Pihkvas / Toivo Tänavsuu

    Index Scriptorium Estoniae

    Tänavsuu, Toivo

    2005-01-01

    Eesti Energia ja Venemaa ettevõte RAO Rossija võivad koos rajada Pihkvasse ühise gaasielektrijaama. Eesti Energia juhatuse liikme Lembit Vali kommentaare. Lisa: Fortum ja Eesti Energia otsivad koostöövõimalusi

  4. Current Trends in Computer-Based Education in Medicine

    Science.gov (United States)

    Farquhar, Barbara B.; Votaw, Robert G.

    1978-01-01

    Important current trends in the use of computer technology to enhance medical education are reported in the areas of simulation and assessment of clinical competence, curriculum integration, financial support, and means of exchanging views and scientific information. (RAO)

  5. Eesti Energia tahab elektrit toota Pihkvas / Toivo Tänavsuu

    Index Scriptorium Estoniae

    Tänavsuu, Toivo

    2005-01-01

    Eesti Energia ja Venemaa ettevõte RAO Rossija võivad koos rajada Pihkvasse ühise gaasielektrijaama. Eesti Energia juhatuse liikme Lembit Vali kommentaare. Lisa: Fortum ja Eesti Energia otsivad koostöövõimalusi

  6. Instructional Design and Curricular Impact of Computer-Based Music Education

    Science.gov (United States)

    Hofstetter, Fred T.

    1978-01-01

    A competency-based, self-paced core music curriculum utilizing the concept of digital music synthesis is described. The system is designed to aid in experimental research into the perception of intervals, melodies, chords, rhythms, and harmonies. (RAO)

  7. PEOPLE/POINTS

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Scientist Misses Out Rao Yi, Dean of the School of Life Sciences of Peking University and also a prestigious neuroscientist, attracted people’sattention because he was not selected as an academician of the Chinese Academy of Sciences (CAS).

  8. Performance Analysis of a Decoding Algorithm for Algebraic Geometry Codes

    DEFF Research Database (Denmark)

    Jensen, Helge Elbrønd; Nielsen, Rasmus Refslund; Høholdt, Tom

    1998-01-01

    We analyse the known decoding algorithms for algebraic geometry codes in the case where the number of errors is greater than or equal to [(dFR-1)/2]+1, where dFR is the Feng-Rao distance......We analyse the known decoding algorithms for algebraic geometry codes in the case where the number of errors is greater than or equal to [(dFR-1)/2]+1, where dFR is the Feng-Rao distance...

  9. Recent results in the decoding of Algebraic geometry codes

    DEFF Research Database (Denmark)

    Høholdt, Tom; Jensen, Helge Elbrønd; Nielsen, Rasmus Refslund

    1998-01-01

    We analyse the known decoding algorithms for algebraic geometry codes in the case where the number of errors is [(dFR-1)/2]+1, where dFR is the Feng-Rao distance......We analyse the known decoding algorithms for algebraic geometry codes in the case where the number of errors is [(dFR-1)/2]+1, where dFR is the Feng-Rao distance...

  10. Magnetic studies of basement off the coast of Bombay, West of India

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, D

    , 175 (1990) 317-334 Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands 317 Magnetic studies of basement off the coast of Bombay, west of India D. GOPALA RAO National Institute of Oceanography, Dona Paula, Goa- 004 (India... the tectonic regime, sedimentary record and magnetic sig- D. GOPALA RAO natures of the continental margin, which are sig- nificant in any explanation of the evolution of the margin. Results are based on both the published (Sahay, 1978; Basu et al., 1980...

  11. Dicty_cDB: SLA431 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 0.y1 Meloidogyne incognita egg SL1 TOPO v1 ... 50 0.10 1 ( AW871346 ) ra76b02.y1 Bird-Rao Meloidogyne incogn...ita J2 Melo... 50 0.10 1 ( AW830042 ) ra48h09.y1 Bird-Rao Meloidogyne incognita J2 Melo... 50 0.10 1 ( AW828941 ) ra70a02.y1 Bird

  12. Dicty_cDB: SSD517 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available eba histolytica genomic, DNA sequence. 56 2e-06 2 AW570895 |AW570895.1 ra12e05.y1 Bird-Rao Meloidogyne incog...NTEP18TR Entamoeba histolytica Sheared DNA Entamoeba histolytica genomic, DNA sequence. 56 5e-04 1 AW588730 ...|AW588730.1 ra03h09.y2 Bird-Rao Meloidogyne incognita J2 Meloidogyne incognita cDNA 5' similar to WP:F55H2.2

  13. Dicty_cDB: AFO449 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available gnments: (bits) Value N BM774584 |BM774584.1 ra95c11.y1 Meloidogyne incognita egg pAMP1 Bird Meloidogyne inc...ssed in fertilized egg. 42 3e-05 3 AW827814 |AW827814.1 ra59b10.y1 Bird-Rao Meloi...sequence. 40 8e-05 3 AW871572 |AW871572.1 ra79e06.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne incognita

  14. The Geometry of Statistical Efficiency and Matrix Statistics

    Directory of Open Access Journals (Sweden)

    K. Gustafson

    2007-01-01

    Full Text Available We will place certain parts of the theory of statistical efficiency into the author's operator trigonometry (1967, thereby providing new geometrical understanding of statistical efficiency. Important earlier results of Bloomfield and Watson, Durbin and Kendall, Rao and Rao, will be so interpreted. For example, worse case relative least squares efficiency corresponds to and is achieved by the maximal turning antieigenvectors of the covariance matrix. Some little-known historical perspectives will also be exposed. The overall view will be emphasized.

  15. Impaired Cell Cycle Regulation in a Natural Equine Model of Asthma.

    Directory of Open Access Journals (Sweden)

    Alicja Pacholewska

    Full Text Available Recurrent airway obstruction (RAO is a common and potentially debilitating lower airway disease in horses, which shares many similarities with human asthma. In susceptible horses RAO exacerbation is caused by environmental allergens and irritants present in hay dust. The objective of this study was the identification of genes and pathways involved in the pathology of RAO by global transcriptome analyses in stimulated peripheral blood mononuclear cells (PBMCs. We performed RNA-seq on PBMCs derived from 40 RAO affected and 45 control horses belonging to three cohorts of Warmblood horses: two half-sib families and one group of unrelated horses. PBMCs were stimulated with hay dust extract, lipopolysaccharides, a recombinant parasite antigen, or left unstimulated. The total dataset consisted of 561 individual samples. We detected significant differences in the expression profiles between RAO and control horses. Differential expression (DE was most marked upon stimulation with hay dust extract. An important novel finding was a strong upregulation of CXCL13 together with many genes involved in cell cycle regulation in stimulated samples from RAO affected horses, in addition to changes in the expression of several HIF-1 transcription factor target genes. The RAO condition alters systemic changes observed as differential expression profiles of PBMCs. Those changes also depended on the cohort and stimulation of the samples and were dominated by genes involved in immune cell trafficking, development, and cell cycle regulation. Our findings indicate an important role of CXCL13, likely macrophage or Th17 derived, and the cell cycle regulator CDC20 in the immune response in RAO.

  16. The Attenuation of Flexural Waves in Mass Loaded Beams.

    Science.gov (United States)

    1985-05-01

    would also like to thank Professor Kim Vandiver for the loan of his spectral analyzer. I also want to thank Kodali Rao and Greg Chisholm for their...imaginary part of the fourth root of equation (11). This was done by Mr. Kodali Rao*. He devised a computer program that would generate the magnitude of...EXPERIMENT The author’s principal purpose was to devise an experimental method of testing the analytical model. The beam part of the system was simple enough

  17. Study of RpI22 in MDS and AML

    Science.gov (United States)

    2016-12-01

    Rao S, Cai KQ, Stadanlick JE, Greenberg -Kushnir N, Solanki-Patel N, Lee SY, Fahl SP, Testa JR, Wiest DL. Ribosomal Protein Rpl22 Controls the...Hematologic Malignancies Conference, Philadelphia, USA (Travel Award) • Greenberg N, Patel NS, Peri S, Rao S, Rhodes M, Wiest DL. 2014. Role of... Greenberg -Kushnir N, Solanki-Patel N, Lee SY, Fahl SP, Testa JR, Wiest DL. 2016. Ribosomal Protein Rpl22 Controls the Dissemination of T-cell Lymphoma

  18. Maritime archaeology of the Okhamandal region, Gujarat

    Digital Repository Service at National Institute of Oceanography (India)

    Sundaresh; Gaur, A.S.; Tripati, S.

    stone structures have been located in shallow waters off Dwarka. They have been described as walls, bastions, pillars, and it has been suggested that these are the remains of ancient habitation (Rao, 1990, 59-98). Besides stone structures a large.... These structures were identified as remnants of a fortification wall (Rao, 1990, 59-98 & 1999, 83). Similar dressed blocks have been noticed in Rupen Bandar. They form the structure between two pillars. As mentioned earlier, there is no evidence of any...

  19. Fungi in the respiratory tract of horses with recurrent airway obstruction

    Directory of Open Access Journals (Sweden)

    M.O. Xavier

    2014-10-01

    Full Text Available This study aims to compare the concentration of viable fungi, especially those of the genus Aspergillus in the respiratory tract of stabled horses with and without Recurrent Airway Obstruction (RAO. Thirty two housed horses from four equestrian centers in Brazil were included in the study. These animals were submitted to clinical examination and to a respiratory sample collection. They were categorized into two groups: healthy and RAO-affected horses. Samples obtained by tracheobronchial washes were evaluated for fungal microscopy, quantitative culture and Aspergillus spp. quantification. Eighteen healthy and 14 RAO-affected horses were studied. Fungi were more frequently recovered in the RAO group, in comparison to controls, for both fungal microscopy (P<0.0001, fungal culture (P<0.0001 and Aspergillus spp. quantitative culture (p=0.001. In conclusion, horses with RAO have significantly higher fungal load in the respiratory tract in comparison to healthy horses. The implications of these findings in terms of the pathogenesis of RAO deserve additional investigation.

  20. Patent haemostasis prevents radial artery occlusion in patients with an acute coronary syndrome.

    Science.gov (United States)

    Wilson, Simon J; Mitchell, Andrew; Gray, Timothy J M; Loh, Hoe Jun; Cruden, Nick L

    2017-08-01

    A haemostatic technique that maintains radial artery flow ("patent haemostasis") following transradial catheterization reduces rates of radial artery occlusion (RAO) in patients with stable coronary disease. It is unclear whether this benefit extends to patients with an acute coronary syndrome (ACS). Patients undergoing inpatient transradial catheterization for an ACS were prospectively enrolled in a consecutive cohort study (n=300). Radial haemostasis was obtained using standard radial compression (cohort 1; n=150) or patent haemostasis (cohort 2; n=150). An end-of-case activated clotting time (ACT) was recorded and radial artery patency assessed within 24 hours of sheath removal by reverse Barbeau's test. The incidence of RAO was 16.0% following standard radial compression and 5.3% following patent haemostasis (p=0.003). Univariate predictors of RAO were patent haemostasis (OR 0.30; [0.13-0.68], p=0.004), hyperlipidaemia (OR 0.46; [0.21-0.98], p=0.04), history of current smoking (OR 2.86; [1.3-6.0], p=0.015) and longer procedure times (OR 1.03/additional minute; [1.01-1.05], p=0.003). There was no association between the end-of-case ACT and RAO (OR 1.00; [0.9-1.01] p=1.00). After adjusting for covariates, patent haemostasis reduced the risk of RAO by 70% compared to standard compression (OR 0.30; [0.12-0.77], p=0.12). The c-statistic for model discrimination was 0.79 (95% CI [0.71-0.86], ppatent haemostasis as an independent predictor of reduced RAO (OR 0.38 [0.15-0.95], p=0.039). Patent haemostasis is highly effective in preventing early RAO in patients with ACS. Copyright © 2017 Elsevier B.V. All rights reserved.

  1. Canagliflozin Lowers Postprandial Glucose and Insulin by Delaying Intestinal Glucose Absorption in Addition to Increasing Urinary Glucose Excretion

    Science.gov (United States)

    Polidori, David; Sha, Sue; Mudaliar, Sunder; Ciaraldi, Theodore P.; Ghosh, Atalanta; Vaccaro, Nicole; Farrell, Kristin; Rothenberg, Paul; Henry, Robert R.

    2013-01-01

    OBJECTIVE Canagliflozin, a sodium glucose cotransporter (SGLT) 2 inhibitor, is also a low-potency SGLT1 inhibitor. This study tested the hypothesis that intestinal canagliflozin levels postdose are sufficiently high to transiently inhibit intestinal SGLT1, thereby delaying intestinal glucose absorption. RESEARCH DESIGN AND METHODS This two-period, crossover study evaluated effects of canagliflozin on intestinal glucose absorption in 20 healthy subjects using a dual-tracer method. Placebo or canagliflozin 300 mg was given 20 min before a 600-kcal mixed-meal tolerance test. Plasma glucose, 3H-glucose, 14C-glucose, and insulin were measured frequently for 6 h to calculate rates of appearance of oral glucose (RaO) in plasma, endogenous glucose production, and glucose disposal. RESULTS Compared with placebo, canagliflozin treatment reduced postprandial plasma glucose and insulin excursions (incremental 0- to 2-h area under the curve [AUC0–2h] reductions of 35% and 43%, respectively; P Canagliflozin reduced AUC RaO by 31% over 0 to 1 h (geometric means, 264 vs. 381 mg/kg; P canagliflozin increased RaO such that total AUC RaO over 0 to 6 h was Canagliflozin reduces postprandial plasma glucose and insulin by increasing UGE (via renal SGLT2 inhibition) and delaying RaO, likely due to intestinal SGLT1 inhibition. PMID:23412078

  2. Canagliflozin lowers postprandial glucose and insulin by delaying intestinal glucose absorption in addition to increasing urinary glucose excretion: results of a randomized, placebo-controlled study.

    Science.gov (United States)

    Polidori, David; Sha, Sue; Mudaliar, Sunder; Ciaraldi, Theodore P; Ghosh, Atalanta; Vaccaro, Nicole; Farrell, Kristin; Rothenberg, Paul; Henry, Robert R

    2013-08-01

    Canagliflozin, a sodium glucose cotransporter (SGLT) 2 inhibitor, is also a low-potency SGLT1 inhibitor. This study tested the hypothesis that intestinal canagliflozin levels postdose are sufficiently high to transiently inhibit intestinal SGLT1, thereby delaying intestinal glucose absorption. This two-period, crossover study evaluated effects of canagliflozin on intestinal glucose absorption in 20 healthy subjects using a dual-tracer method. Placebo or canagliflozin 300 mg was given 20 min before a 600-kcal mixed-meal tolerance test. Plasma glucose, (3)H-glucose, (14)C-glucose, and insulin were measured frequently for 6 h to calculate rates of appearance of oral glucose (RaO) in plasma, endogenous glucose production, and glucose disposal. Compared with placebo, canagliflozin treatment reduced postprandial plasma glucose and insulin excursions (incremental 0- to 2-h area under the curve [AUC0-2h] reductions of 35% and 43%, respectively; P Canagliflozin reduced AUC RaO by 31% over 0 to 1 h (geometric means, 264 vs. 381 mg/kg; P canagliflozin increased RaO such that total AUC RaO over 0 to 6 h was Canagliflozin reduces postprandial plasma glucose and insulin by increasing UGE (via renal SGLT2 inhibition) and delaying RaO, likely due to intestinal SGLT1 inhibition.

  3. Installation restoration program. Feasibility study for sites 1, 3, 5, 6, 7, 8, and 9. Michigan Air National Guard. Alpena Combat Readiness Training Center, Alpena, Michigan. Final report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-04-01

    This study is to screen and evaluate remediation alternatives for IRP sites at Alpena CR TC, Alpena, MI. The purpose of this FS is to develop, screen, and evaluate remedial alternatives which are potentially capable of meeting the remedial action objectives (RAOs) identified for the sites at the Alpena CRTC. The first step in the PS process is to identify the RAOs and general response actions (GRAs). RAOs consist of medium-specific or site-specific goals for protecting human health and the environment. GRAs are actions that satisfy the remedial action goals. After the identification of the RAOs and the GRAs, the next step in the FS process is to identify and screen technologies. In this step, the universe of potentially applicable technology types and process options are reduced by evaluating the options with respect to technical implementability. The retained technologies are then combined to form remedial alternatives capable of meeting the RAOs applicable to a particular site. These remedial alternatives are screened based on effectiveness, implementability, and cost. The purpose of this screening is to reduce the number of alternatives that must undergo a more thorough and extensive evaluation during the detailed analysis step.

  4. Inhibitory Effects of Nano-Extract from Dendropanax morbifera on Proliferation and Migration of Vascular Smooth Muscle Cells.

    Science.gov (United States)

    Lim, Leejin; Yun, Je-Jung; Jeong, Ji-Eun; Wi, An-Jin; Song, Heesang

    2015-01-01

    The plant Dendropanax morbifera Léveille (D. morbifera), a subtropical broad-leaved evergreen tree, have been used in folk medicine for the treatment of infectious diseases, skin diseases, and other maladies. However, the effect of extracts from D. morbifera in vascuar diseases has not yet been reported. In this study, BrdU assay revealed that extracts from D. morbifera inhibit significantly the proliferation rate of Rat Aortic Smooth Muscle Cells (RAoSMCs) by -40% in treated samples compared to controls. Notably, 2-D wound healing assay and 3-D boyden chamber assay showed the significant reduction of RAoSMCs migration induced by serum in nano extracts treated groups by -50%. We further observed that the phosphorylated levels of Akt and ERK were significantly reduced by 70% in extracts treated RAoSMCs. Moreover, the expression levels of matrix metalloproteinase (MMP) 2 and 9 were significantly reduced by extracts from D. morbifera. Our results suggest that extracts from D. morbifera inhibit proliferation and migration in RAoSMCs via the modulation of phosphorylated levels of Akt and ERK. Subsequently, the reduced MMP2 and 9 expression might result to reduced migration of RAoSMCs.

  5. Dicty_cDB: VSC358 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available complete sequence. 44 0.075 6 AW828708 |AW828708.1 ra73a06.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne ...incognita cDNA 5', mRNA sequence. 46 0.43 1 AW571037 |AW571037.1 ra15d12.y1 Bird-Rao Meloidogyne incognita J...Gossypium arboreum cDNA clone GA__Ea0006G06f, mRNA sequence. 46 0.43 1 AW588731 |AW588731.1 ra03h10.y2 Bird-...ponicum cDNA, mRNA sequence. 46 0.43 1 AW571277 |AW571277.1 ra16d05.y2 Bird-Rao Meloidogyne incognita J2 Mel...oidogyne incognita cDNA 5', mRNA sequence. 46 0.43 1 AW571332 |AW571332.1 ra19a06.y2 Bird

  6. Personal operator dose in invasive cardiology as a function of body height and tube angulation; Hoehe und Roehrenangulation als die Determinanten der moeglichen Untersucher-Ortsdosisleistung in der invasiven Kardiologie

    Energy Technology Data Exchange (ETDEWEB)

    Kuon, E.; Reuter, G. [Kardiologische Abt., Klinik Fraenkische Schweiz, Ebermannstadt (Germany); Empen, K.; Dahm, J.B. [Kardiologische Klinik, Ernst-Moritz-Arndt-Univ., Greifswald (Germany)

    2004-05-01

    Purpose: to map in an experimental setting of the local personal operator dose for 55 selected tube angulations as a function of body height above ground. Materials and methods: on an alderson-rando phantom representing the patient, we performed measurements of fluoroscopy scatter radiation ({mu}Sv/h) at the operator's position, for the range of 20 - 200 cm body height, for all tube angulations in 30 steps from right anterior oblique (RAO) 90 to left anterior oblique (LAO) 90 position, and for planes angulated cranially (+) and caudally (-) by 10 , 20 , 30 , and 40 , unless rendered unfeasible by geometric circumstances. Results: radiation exposure to the operator is lowest between posteroanterior (PA) 0 and RAO 30 angulation, and continuously increases by a factor of approx. 2 towards steep RAO, and to factors of 5 - 10 towards steep LAO views. Craniocaudal angulation at 30 likewise generates personal dose levels 2 - 3 times as high. For all body heights and all LAO tube angulations, the corridor between 0 - 10 caudal angulation generates the least personal scatter dose, likewise irrespective of body height and craniocaudal tube angulations, the corridor between 0 PA - 30 RAO angulation. RAO angulations, however, being inverse to the respective 90 LAO angulations, are generally 4 to 5 times less radiation extensive. Peak levels of the local personal dose vary from 160 cm body height for steep cranial LAO 90 /30 + views (3,500 {mu}Sv/h), to 50 cm for cranial PA 0 /30 + (400 {mu}Sv/h), and to {>=} 170 cm (600 {mu}Sv/h) and {<=} 40 cm (300 {mu}Sv/h) for steep cranial RAO 90 /30 + views. Caudal angulations generate slightly lower doses, with peak levels at 120 cm for LAO 90 /30 - views (3,000 {mu}Sv/h), at 50 cm for PA 0 /30 - views (300 {mu}Sv/h), and above 170 cm (900 {mu}Sv/h) and below 40 cm (500 {mu}Sv/h) for steep caudal RAO 90 /30 - views. (orig.) [German] Ziel: Experimentelle Bestimmung der Ortsdosisleistung des Untersuchers in der invasiven Kardiologie

  7. Presence of Recurrent Airway Obstruction in a Group of Colombian Native Horses with Respiratory Symptoms

    Directory of Open Access Journals (Sweden)

    Cristian Alejandro Castillo Franz

    2013-12-01

    Full Text Available The purpose of this study was to determine the presence of recurrent airway obstruction (RAO through bronchoalveolar lavage (BAL in a group of twenty Colombian native horses with respiratory symptoms. Each animal underwent a clinical examination in order to corroborate the respiratory disturbance and later perform the BAL. The results obtained showed that 65% of the animals under study tested positive for RAO, based on the clinical and BAL results, and that, among the total number of animals that tested positive, 61.5% suffered a severe form of such condition. We also found an association between the number of neutrophils and the color of the BAL fluid, and an inverse relationship between cell cytology of macrophages and neutrophils. It is concluded that the Colombian native horse, like other horse breeds, suffers from RAO, sometimes severely, related to predisposing factors such as accommodation and stabling.

  8. Solid State Ionics Advanced Materials for Emerging Technologies

    Science.gov (United States)

    Chowdari, B. V. R.; Careem, M. A.; Dissanayake, M. A. K. L.; Rajapakse, R. M. G.; Seneviratne, V. A.

    2006-06-01

    . Invited papers. Cathodic properties of Al-doped LiCoO[symbol] prepared by molten salt method Li-Ion batteries / M. V. Reddy, G. V. Subba Rao, B. V. R. Chowdari. Layered ion-electron conducting materials / M. A. Santa Ana, E. Benavente, G. González. LiNi[symbol]Co[symbol]O[symbol] cathode thin-film prepared by RF sputtering for all-solid-state rechargeable microbatteries / X. J. Zhu ... [et al.] -- Contributed papers. Contributed papers. Nanocomposite cathode for SOFCs prepared by electrostatic spray deposition / A. Princivalle, E. Djurado. Effect of the addition of nanoporous carbon black on the cycling characteristics of Li[symbol]Co[symbol](MoO[symbol])[symbol] for lithium batteries / K. M. Begam, S. R. S. Prabaharan. Protonic conduction in TiP[symbol]O[symbol] / V. Nalini, T. Norby, A. M. Anuradha. Preparation and electrochemical LiMn[symbol]O[symbol] thin film by a solution deposition method / X. Y. Gan ... [et al.]. Synthesis and characterization LiMPO[symbol] (M = Ni, Co) / T. Savitha, S. Selvasekarapandian, C. S. Ramya. Synthesis and electrical characterization of LiCoO[symbol] LiFeO[symbol] and NiO compositions / A. Wijayasinghe, B. Bergman. Natural Sri Lanka graphite as conducting enhancer in manganese dioxide (Emd type) cathode of alkaline batteries / N. W. B. Balasooriya ... [et al.]. Electrochemical properties of LiNi[symbol]Al[symbol]Zn[symbol]O[symbol] cathode material synthesized by emulsion method / B.-H. Kim ... [et al.]. LiNi[symbol]Co[symbol]O[symbol] cathode materials synthesized by particulate sol-gel method for lithium ion batteries / X. J. Zhu ... [et al.]. Pulsed laser deposition of highly oriented LiCoO[symbol] and LiMn[symbol]O[symbol] thin films for microbattery applications / O. M. Hussain ... [et al.]. Preparation of LiNi[symbol]Co[symbol]O[symbol] thin films by a sol-gel method / X. J. Zhu ... [et al.]. Electrochemical lithium insertion into a manganese dioxide electrode in aqueous solutions / M. Minakshi ... [et al.]. AC impedance

  9. Sample rotation theory with missing data

    Institute of Scientific and Technical Information of China (English)

    ZOU; Guohua

    2002-01-01

    [1]Cochran, W. G., Sampling Techniques, 3rd ed., New York: John Wiley & Sons, 1977, 344-351.[2]Feng, S. Y., Ni, J. X., Zou, G. H., Survey Sampling——Theory and Methods, Beijing: The Statistical Publishing House of China, 1998, 174-177.[3]Sen, A. R., Successive sampling with p(p≥1)auxiliary variables, Ann. Math. Statist., 1972, 43: 2031-2034.[4]Sen, A. R., Theory and application of sampling on repeated occasions with several auxiliary variables, Biometrics, 1973, 29: 381-385.[5]Feng, S. Y., Zou, G. H., Sample rotation method with auxiliary variable, Commun. Statist.-Theory Meth., 1997, 29: 1497-1509.[6]Rao, J. N. K., Sitter, R. R., Jackknife variance estimation under imputation for missing survey data, Technical Report No. 214, Carleton: Carleton University, 1993.[7]Rao, J. N. K., Sitter, R. R., Variance estimation under two-phase sampling with application to imputation for missing data, Biometrika, 1995, 82: 453-460.[8]Rao, J. N. K., On variance estimation with imputed survey data, J. Amer. Statist. Assoc., 1996, 91: 499-506.[9]Sitter, R. R., Rao, J. N. K., Imputation for missing values and corresponding variance estimation, Can. J. Statist., 1997, 25: 61-73.[10]Rao, J. N. K., Developments in sample survey theory: an appraisal, Can. J. Statist., 1997, 25: 1-21.[11]Rao, J. N. K., Shao, J., Jackknife variance estimation with survey data under hot deck imputation, Biometrika, 1992, 79: 811-822.[12]Zou, G. H., Research on some sampling methods and inference problems in survey sampling, Ph. D. Thesis(in Chinese), Beijing: Institute of Systems Science, Chinese Academy of Sciences, 1995.

  10. Coastal Marine Demonstration of Forecast Information to Mariners for the U.S. East Coast

    Science.gov (United States)

    2016-06-07

    Coastal Ocean Forecast System near Cape Hatteras for July 15, 1999. Streak-lines indicate the direction of flow. REFERENCES Aikman, F., G. L. Mellor, T...Ezer, D. Shienin, L. C. Breaker, K. Bosley, P. Chen, and D. B. Rao , 1996. Toward an Operational Nowcast/Forecast System for the U. S. East Coast. In...and Oceanic Prediction and Processes, New Orleans, LA, Amer. Meteor. Soc., x-xx. Breaker, L.C., L.D. Burroughs, Y.Y. Chao, D.M. Feit and D.B. Rao

  11. Organization of the Topical Meeting on Tunable Solid State Lasers Held in North Falmouth, Massachusetts on 1-3 May 1989

    Science.gov (United States)

    1989-08-30

    Repetition Rate T:Sapphire Laser Pumped by a Nd:YLF Laser, Rama Rao, Gary Vaillancourt, Excel Technology, Inc.; H. S. Kwok, NAUSET LOBBY SUNY at Buffalo...KHz REP. RATE Ti:SAPPHIRE LASER PUMPED BY Nd:YLF LASER Rama Rao and Gary Vaillancourt Excel Technology, Inc., 140-20 Keylanu Court, Bohemia, N.Y...di Fisica del Politecnico P.za L. da Vinci 32, 20133 Milano, Italy P.Laporta Dipartimento di Ingegneria Elettronica, II Universit& degli Studi di Roma

  12. A new robot-assisted orthopedic surgery simulation system

    Institute of Scientific and Technical Information of China (English)

    WU Dong-mei; DU Zhi-jiang; JIA Zhi-heng; YANG Donghai; SUN Li-ning

    2006-01-01

    The paper proposes a novel desktop virtual surgical simulation system capable of not only surgical training but also operative planning, surgery rehearsal and telesurgery, which is mainly used on the robot-assisted orthopedic surgery system, HIT-RAOS. The paper first introduces the hardware system: HIT-RAOS. Then presents several major characters of the virtual system: developing tools, building schemes and collision detection algorithm. Additionally, virtual reality based telesurgery is implemented. Based on these works, experiments of locking of intramedullary nails are conducted, and results are content.

  13. Variability of the flow field in the inner shelf along the central east coast of India during April, 1989

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, T.V; Rao, B.P.; Rao, V; Sadhuram, Y.

    . RAO and V. S. RAMARAJU (1986) Upwelling and sinking along the Visakhapatnam coast. Indian Journal of Marine Sciences, 15, 84-87. SARMA M. S. S. and L. V. G. RAO (1986) Currents and temperature structure off Godavari (east coast of India) during...) Elements of dynamic oceanography. Allen and Unwin Publishers, London, 191 pp. VARADACHARI V. V. R. and G. S. SARMA (1967) Circulation of thc surface waters in the North Indian Ocean. Indian Geophysical Union, 4, 61-73. WEBSTER F. (1969) Vertical profiles...

  14. The missing evaluation codes from order domain theory

    DEFF Research Database (Denmark)

    Andersen, Henning Ejnar; Geil, Olav

    The Feng-Rao bound gives a lower bound on the minimum distance of codes defined by means of their parity check matrices. From the Feng-Rao bound it is clear how to improve a large family of codes by leaving out certain rows in their parity check matrices. In this paper we derive a simple lower...... bound on the minimum distance of codes defined by means of their generator matrices. From our bound it is clear how to improve a large family of codes by adding certain rows to their generator matrices. Actually our result not only deals with the minimum distance but gives lower bounds on any...

  15. Trapped Atoms in One-Dimensional Photonic Crystals

    Science.gov (United States)

    2013-08-09

    2002 J. Opt. Soc. Am. B 19 2052 [39] Koenderink A F, Kafesaki M, Soukoulis C M and Sandoghdar V 2006 J. Opt. Soc. Am. B 23 1196 [40] Manga Rao V S C...032509 [55] Hwang J K, Ryu H Y and Lee Y H 1999 Phys. Rev. B 60 4688–95 [56] Yao P, Manga Rao V S C and Hughes S 2010 Laser Photon. Rev. 4 499–516 New Journal of Physics 15 (2013) 083026 (http://www.njp.org/)

  16. Surface freshwater from Bay of Bengal runoff and Indonesian throughflow in the tropical Indian Ocean

    Digital Repository Service at National Institute of Oceanography (India)

    Sengupta, D.; Raj, B.; Shenoi, S.S.C.

    et al. [2005]). In addition to the western pathway in winter iden- tified from observations (Donguy and Meyers [1996]; Rao and Sivakumar [2003]), model simulations (e.g. Han et al. [2001]) and experiments using tracers/drifters suggest that BoB water... and impact of BoB freshwater. The use of upper ocean salinity observations to study the movement of freshwater is problematic because salin- ity is influenced by seasonally varying rain (P) and evap- oration (E) (Donguy and Meyers [1996]; Rao and Sivaku- mar...

  17. Provenance and distribution of clay minerals in the sediments of the western continental shelf and slope of India

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, V.P.; Rao, B.R.

    . 1757 1758 V. Purnachandra Rao and B. Ramalingeswara Rao 66 $4 63 . ‘.6-l. 66 c A R A B / A N S E- A 142, lil .I46 144e Fig. 1. Sample location map-west coast of India. Transects labeled A-F from north to south are shown in Fig. 3... north to south (transect positions are shown in Fig. 1). A slow scan separation of kaolinite and chlorite is also inserted between illite and kaolinite plus chlorite reflections. Diffractogram “Ca” is reduced to 75% before redrawing. Pie diagram shows...

  18. Optomechanical parameter estimation

    CERN Document Server

    Ang, Shan Zheng; Bowen, Warwick P; Tsang, Mankei

    2013-01-01

    We propose a statistical framework for the problem of parameter estimation from a noisy optomechanical system. The Cram\\'er-Rao lower bound on the estimation errors in the long-time limit is derived and compared with the errors of radiometer and expectation-maximization (EM) algorithms in the estimation of the force noise power. When applied to experimental data, the EM estimator is found to have the lowest error and follow the Cram\\'er-Rao bound most closely. With its ability to estimate most of the system parameters, the EM algorithm is envisioned to be useful for optomechanical sensing, atomic magnetometry, and classical or quantum system identification applications in general.

  19. A characterization for a graphic sequence to be potentially C_r-graphic

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Let r 3, n r and π = (d1, d2, . . . , dn) be a graphic sequence. If there exists a simple graph G on n vertices having degree sequence π such that G contains Cr (a cycle of length r) as a subgraph, then π is said to be potentially Cr-graphic. Li and Yin (2004) posed the following problem: characterize π = (d1, d2, . . . , dn) such that π is potentially Cr-graphic for r 3 and n r. Rao and Rao (1972) and Kundu (1973) answered this problem for the case of n = r. In this paper, this problem is solved completely.

  20. Results on n-tupled fixed points in complete asymptotically regular metric spaces

    Directory of Open Access Journals (Sweden)

    Anupam Sharma

    2014-10-01

    Full Text Available The notion of n-tupled fixed point is introduced by Imdad, Soliman, Choudhury and Das, Jour. of Operators, Vol. 2013, Article ID 532867. In this manuscript, we prove some n-tupled fixed point theorems (for even n for mappings having mixed monotone property in partially ordered complete asymptotically regular metric spaces. Our main theorem improves the corresponding results of Imdad, Sharma and Rao (M. Imdad, A. Sharma, K.P.R. Rao, Generalized n-tupled fixed point theorems for nonlinear contractions, preprint.

  1. Main: 2PLH [RPSD[Archive

    Lifescience Database Archive (English)

    Full Text Available 2PLH 小麦 Bread Wheat Triticum aestivum Alpha-1-Purothionin Precursor Name=Thi1.1; Sy...nonyms=Pur-D1; Triticum Aestivum Molecule: Alpha-1-Purothionin; 2plh 6 Chain: Null; 2plh 7 Other_details: So...lute Molecules Not Added To The 2plh 8 Crystallization: Phosphate, Acetate, Glycerol 2plh 9 Toxin M.M.Teeter, B.Stec, U.Rao 2plh... 16 U.Rao, B.Stec, M.M.Teeter 2plh 18 Refinement Of Purothioneins Reveals Solute 2plh... 19 Particles Important For Lattice Formation And 2plh 20toxicity. Part 1. Alpha=1=-

  2. Rayleigh lidar observations of double stratopause structure over three different northern hemisphere stations

    CSIR Research Space (South Africa)

    Sivakumar, V

    2006-09-01

    Full Text Available observations of double stratopause structure over three different northern hemisphere stations V. Sivakumar1, H. Bencherif1, A. Hauchecorne2, P. Keckhut2, D. N. Rao3, S. Sharma4, H. Chandra4, A. Jayaraman4, and P. B. Rao5 1Laboratoire de l’Atmosphe`re et... des Cyclones, CNRS–UMR 8105, Universite´ de La Re´union, La Reunion, France 2Service d’Ae´ronomie, CNRS, Paris, France 3National Atmospheric Research Laboratory, P. B. No: 123, Tirupati-517 502, India 4Physical Research Laboratory, Navarangapura...

  3. Synthesis and biological evaluation of quinoxaline-5,8-diones that inhibit vascular smooth muscle cell proliferation.

    Science.gov (United States)

    Chung, Hwa-Jin; Jung, Ok-Jai; Chae, Mi Jin; Hong, Sung-Yu; Chung, Kwang-Hoe; Lee, Sang Kook; Ryu, Chung-Kyu

    2005-07-15

    A series of 6-arylamino-2,3-bis(pyridin-2-yl)-7-chloro-quinoxaline-5,8-diones were synthesized and evaluated for their inhibitory activity on the rat aortic smooth muscle cell (RAoSMC) proliferation. The quinoxaline-5,8-diones exhibited a potent antiproliferative activity. Further mechanistic study revealed that the inhibitory effect of one representative quinoxaline-5,8-dione on SMC proliferation was mediated by modulation of the extracellular signal-regulated kinase 1/2 signaling pathway in the RAoSMCs.

  4. Dicty_cDB: AFN775 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available nts: (bits) Value N BM774584 |BM774584.1 ra95c11.y1 Meloidogyne incognita egg pAMP1 Bird Meloidogyne incogni...s mellifera cDNA clone BB170011A20F01 5', mRNA sequence. 64 6e-08 2 AW827814 |AW827814.1 ra59b10.y1 Bird-Rao... mRNA sequence. 48 5e-07 3 AW871572 |AW871572.1 ra79e06.y1 Bird-Rao Meloidogyne i

  5. Dicty_cDB: SHG578 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 292J21 from chromosome 6, complete sequence. 38 1.8 2 AW871630 |AW871630.1 ra80c01.y1 Bird...LEOTIDE PHOSPHODIESTERASE ;, mRNA sequence. 44 4.4 1 AW871214 |AW871214.1 ra56d01.y1 Bird-Rao Meloidogyne in... mRNA sequence. 44 4.4 1 AW829376 |AW829376.1 ra39d01.y1 Bird-Rao Meloidogyne inc

  6. Dicty_cDB: SHF745 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available culus BAC clone RP23-292J21 from chromosome 6, complete sequence. 38 2.1 2 AW871630 |AW871630.1 ra80c01.y1 Bird...E PHOSPHODIESTERASE ;, mRNA sequence. 44 4.7 1 AW871214 |AW871214.1 ra56d01.y1 Bird-Rao Meloidogyne incognit... PHOSPHODIESTERASE ;, mRNA sequence. 44 4.7 1 AW829376 |AW829376.1 ra39d01.y1 Bird-Rao Meloidogyne incognita

  7. BIASED BEARINGS-ONIKY PARAMETER ESTIMATION FOR BISTATIC SYSTEM

    Institute of Scientific and Technical Information of China (English)

    Xu Benlian; Wang Zhiquan

    2007-01-01

    According to the biased angles provided by the bistatic sensors,the necessary condition of observability and Cramer-Rao low bounds for the bistatic system are derived and analyzed,respectively.Additionally,a dual Kalman filter method is presented with the purpose of eliminating the effect of biased angles on the state variable estimation.Finally,Monte-Carlo simulations are conducted in the observable scenario.Simulation results show that the proposed theory holds true,and the dual Kalman filter method can estimate state variable and biased angles simultaneously.Furthermore,the estimated results can achieve their Cramer-Rao low bounds.

  8. The inhibitory effect of calcium on Cylindrospermopsis raciborskii (cyanobacteria metabolism

    Directory of Open Access Journals (Sweden)

    Ronaldo Leal Carneiro

    2011-12-01

    Full Text Available Cylindrospermopsis raciborskii (Woloszynska Seenaya & Subba Raju is a freshwater cyanobacterium of worldwide distribution. In the North-eastern region of Brazil many eutrophic water reservoirs are characterized by the dominance of C. raciborskii, with recurrent occurrence of blooms. These water bodies have high conductivity due to a high ionic concentration, and are defined as hard (with high values of CaCO3. In this study, we investigated the long-term effect (12 days of high calcium concentration (8 mM Ca2+ on C. raciborskii (T3 strain growth, morphology, toxin content, and metabolism. Changes in protein expression profiles were investigated by proteomic analysis using 2D gel electrophoresis and mass spectrometry. A continued exposure to calcium had a pronounced effect on C. raciborskii (T3: it limited growth, decreased thricome length, increased chlorophyll-a content, altered toxin profile (although did not affect PST content, saxitoxin + neosaxitoxin, and inhibited the expression of proteins related to primary metabolism.

  9. Lake viruses lyse cyanobacteria, Cylindrospermopsis raciborskii, enhances filamentous-host dispersal in Australia

    Science.gov (United States)

    Pollard, Peter C.; Young, Loretta M.

    2010-01-01

    Globally, cyanobacterial blooms are increasing along with observations of the controlling influence of viruses. Our aim here was to test whether viruses from an Australian freshwater lake could lyse the cyanobacterium Cylindrospermopsis raciborskii (Woloszynska) Seenaya and Subba Raju. C. raciborskii was selectively isolated from Lake Samsonvale southeast Queensland Australia using a Modified Jaworski Medium (without any form of inorganic nitrogen). Microscopy confirmed the resulting culture of a single cyanobacterial species. Natural viral-like particles (VLPs) were incubated with C. raciborskii cells, the host abundance decreased by 86% in 5 days, while the number of VLPs increased stepwise. As a cell lysed, the filaments of cells split into smaller, but viable, fragments. This process may help disperse the cyanobacterium in the wild. Hence the use of this virus to control blooms may inadvertently encourage the dispersal of toxic filamentous cyanobacteria. The cyanophage (virus infecting cyanobacteria) replication time was 21 h, with an average burst size of 64 viruses cell -1. Transmission Electron Microscopy showed this cyanophage for C. raciborskii, with its long, non-contractile tail and a capsid diameter of 70 nm, belongs to the Siphoviridae family of viruses. This cyanophage can affect the abundance and distribution of the cyanobacterium C. raciborskii in this Australian freshwater lake.

  10. Planktonic production and respiration in a subtropical lake dominated by Cyanobacteria

    Directory of Open Access Journals (Sweden)

    D. Tonetta

    Full Text Available Planktonic primary production and respiration rates were estimated in a subtropical coastal lake dominated by Cyanobacteria in order to investigate the temporal and vertical variation in this lake and to evaluate its relationships with limnological variables and phytoplankton. Light and dark bottles were incubated at four different depths in the central part of the lake and were performed bimonthly from June/2009 to December/2010. No significant difference was evident among depths in relation to phytoplankton, limnological variables and metabolic rates. However, the highest production rates were recorded at the surface, and decreased towards the bottom, coupled with phytoplanktonic photosynthetic capacity. Wind induced mixing in Peri Lake played an important role in nutrient and phytoplankton redistribution, characterizing this lake as polymictic. According to density and biovolume, the phytoplankton community was dominated by filamentous Cyanobacteria, especially Cylindrospermopsis raciborskii (Woloszynska Seenayya and Subba-Raju. This study has shown that both water temperature and nutrient availability drive phytoplankton growth and consequently the temporal variation in metabolic rates, where respiration is higher than primary production.

  11. Conference on Biological Actions and Medical Applications of Dimethyl Sulfoxide (DMSO), 15-17 September 1982.

    Science.gov (United States)

    1983-06-01

    10O ml). Of the 18 control rats that survived the procedure none lived longer than five days. Death was attributed to a typical uremic syndrome. At 24...STEROSKI, 1. Mossy, G. R. RAO & J MICKELL. 1977. Thiopental amelioration of post-ischemic encephalopathy in moon- keys. Adta Neurol. Scand. Suppl

  12. Assessing the Crossdisciplinarity of Technology-Enhanced Learning with Science Overlay Maps and Diversity Measures

    Science.gov (United States)

    Kalz, Marco; Specht, Marcus

    2014-01-01

    This paper deals with the assessment of the crossdisciplinarity of technology-enhanced learning (TEL). Based on a general discussion of the concept interdisciplinarity and a summary of the discussion in the field, two empirical methods from scientometrics are introduced and applied. Science overlay maps and the Rao-Stirling diversity index are…

  13. Noncommunting observables in quantum detection and estimation theory

    Science.gov (United States)

    Helstrom, C. W.

    1971-01-01

    In quantum detection theory the optimum detection operators must commute; admitting simultaneous approximate measurement of noncommuting observables cannot yield a lower Bayes cost. The lower bounds on mean square errors of parameter estimates predicted by the quantum-mechanical Cramer-Rao inequality can also not be reduced by such means.

  14. Algab suur animatsioonipidu

    Index Scriptorium Estoniae

    2007-01-01

    PÖFFi animafilmide festivali "Animated Dreams" (21.-25. XI ), mis on seekord pühendatud Nukufilmi 50. juubelile, avatakse täna kell 19 kinos Sõprus. Avaseansil linastub kolm Eesti animafilmi : Rao Heidmetsa "Papa Carlo teater" (1988), Riho Undi "Kapsapea" (1993) ja Priit Tenderi "Rebasenaine" (2002)

  15. Eesti animafilmid edukad / Rein Raamat

    Index Scriptorium Estoniae

    Raamat, Rein, 1931-

    2004-01-01

    Rao Heidmetsa nukufilm "Instinkt" sai peaauhinna 10-30minutiliste filmide kategoorias ja Ülo Pikkovi joonisfilm "Ahvi aasta" eriauhinna Riia rahvusvahelisel animafilmide festivalil BIMINI. Grand Prix kuulus vene režissööri Valentin Olshvangi filmile "Vähkidest"

  16. Extraction Methodological Contributions Toward Ultra-Performance Liquid ChromatographyTime-of-Flight Mass Spectrometry: Quantification of Free GB from Various Food Matrices

    Science.gov (United States)

    2016-02-01

    detection and emphasize its importance. The mere existence of these molecules in either the environment or the food supply could indicate a compliance...S.N.; Vasudev, K.; Rao , M.V.V. Quantification of Organophosphate Insecticides and Herbicides in Vegetable Samples Using the “Quick Easy Cheap

  17. Eesti nukufilm Stuttgardis luubi all

    Index Scriptorium Estoniae

    2004-01-01

    Stuttgardi animafilmide festivali võistlusprogrammis on Eestist Rao Heidmetsa "Instinkt" ja Hardi Volmeri "Barbarid" stuudiolt Nukufilm ja Priit Pärna "Karl ja Marilyn" ning Ülo Pikkovi "Ahviaasta" Eesti Joonisfilmilt. Lastefilmide seas võistleb Pärtel Talli "Porgand". Eri programmides on mitmeid Riho Undi nukufilme

  18. Development of Novel Drugs That Target Coactivation Sites of the Androgen Receptor for Treatment of Antiandrogen-Resistant Prostate Cancer

    Science.gov (United States)

    2015-12-01

    13566 significantly decreased serum PSA to a comparable degree as enzalutamide (p < 0.01, Figure 2B). Together, these results indicate that this...2012;26:1078-90. 10. Tavassoli P, Snoek R, Ray M, Rao LG, Rennie PS. Rapid, non-destructive, cell-based screening assays for agents that modulate growth

  19. Quantification of VX Nerve Agent in Various Food Matrices by Solid-Phase Extraction Ultra-Performance Liquid ChromatographyTime-of-Flight Mass Spectrometry

    Science.gov (United States)

    2016-04-01

    molecules in either the environment or the food supply could indicate a compliance breach, even if the actual CWA levels were not high enough to cause...Vasudev, K.; Rao , M.V.V. Quantification of Organophosphate Insecticides and Herbicides in Vegetable Samples Using the “Quick Easy Cheap Effective

  20. Bistatic Sonar Localization Based on Best Linear Unbiased Estimation

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A best linear unbiased estimation (BLUE) algorithm for bistatic sonar localization is proposed. The Cramer-Rao bound for bistatic sonar and the geometrical dilution of precision (GDOP) in different conditions are given. The simulation results show that the location accuracy of BLUE algorithm is higher than the weighted least square method.

  1. Assessing the Crossdisciplinarity of Technology-Enhanced Learning with Science Overlay Maps and Diversity Measures

    Science.gov (United States)

    Kalz, Marco; Specht, Marcus

    2014-01-01

    This paper deals with the assessment of the crossdisciplinarity of technology-enhanced learning (TEL). Based on a general discussion of the concept interdisciplinarity and a summary of the discussion in the field, two empirical methods from scientometrics are introduced and applied. Science overlay maps and the Rao-Stirling diversity index are…

  2. awareness and practice on biomedical waste management among ...

    African Journals Online (AJOL)

    2013-02-02

    Feb 2, 2013 ... management rules and inadequate state of execution and awareness in practice. It is .... hydroclave or microwave (Rao et al (10). All persons exposed to ..... Patil, G. V. and Pokhre1, K. Biomedical Solid Waste. Management in ...

  3. A General Introduction to Microcomputers.

    Science.gov (United States)

    Muiznieks, Viktors

    This basic introduction to microcomputers provides the neophyte with the terminology, definitions, and concepts that explain the microcomputer and computing technology in general. Mathematical operations with binary numbers, computer storage, controlling logic, and the concepts of stack and interrupt are explained. (RAO)

  4. Eesti nukufilm sai järjekordse grand prix

    Index Scriptorium Estoniae

    2005-01-01

    XII Rahvusvaheline animafilmifestival "KROK-2005", mis toimus laeval, mis sõitis Kiievist Odessasse. Rao Heidmets ja Hardi Volmer said festivali karnevalil oma jänese kostüümi eest grand prix. Eesti filmidest olid programmis "Karl ja Marilyn", "Frank ja Wendy", "Barbarid", "Laud" ja "Conkistadoor"

  5. Report on Research for Period January 1983-December 1984

    Science.gov (United States)

    1985-06-28

    and Istituto Di Fisica Sperimentale, Napoli, Particle Measurements, Noordwijk, The Italy) Netherlands 113-16 September 1983) Detection offPropagating...Wkshp., Meudon. France s18-22 June 1984) Sunspot Motions and Their Association witi Flare RAMA RAO, P.V.S., DAsGuVI-A, A. Actai itv XXV COSPAR Mtg., Graz

  6. Epigenetic Regulation of Ovarian Tumor Immunity

    Science.gov (United States)

    2010-11-01

    The personnel receiving pay from the research effort: 1. Rajesh Rao, Pre-doctoral Trainee (Year 2) 2. Qingsheng Li, Post-Doc (Year 2) 3...K, Souleimanian NE, Lele S, Shrikant P, Old LJ, Valmori D, Ayyoub M. Differential expression of CCR7 defines two distinct subsets of human memory

  7. Protection Against Scrub Typhus by a Plasmid Vaccine Encoding the 56-KD Outer Membrane Protein Antigen Gene

    Science.gov (United States)

    2005-05-27

    Telephone: 301-319-7438, Fax: 301-319-7460, E-mail: chingw@nmrc.navy.mil. Gregory A. Dasch, Viral and Rick- ettsial Zoonoses Branch, Division of...sufficient to mediate protection to an infectious parasite challenge. Proc Natl Acad Sci USA 97: 8427–8432. 41. Rao M, Matyas GR, Grieder F, Anderson

  8. Assessment of LTE Wireless Access for Monitoring of Energy Distribution in the Smart Grid

    DEFF Research Database (Denmark)

    Madueño, Germán Corrales; Nielsen, Jimmy Jessen; Min Kim, Dong;

    2016-01-01

    ) assigning RAOs more frequently sometimes worsens performance; and 2) the additional signaling that follows the ARP has very large impact on the capacity in terms of the number of supported devices; we observed a reduction in the capacity by almost a factor of 3. This suggests that a lightweight access...

  9. Distribution of organic carbon in surface sediments along the eastern Arabian Sea: a revisit

    Digital Repository Service at National Institute of Oceanography (India)

    PrakashBabu, C.; Brumsack, H.-J.; Schnetger, B.

    and Industrial Research CSIR, New Delhi for sanctioning the deputation. The authors would like to thank Dr. C.S. Murthy, Dr. P. Diwakarnaidu, Dr. B. Nagendranath, Dr. S.W.A. Naqvi and Mr. B. Rama- lingeswara Rao for constructive comments and sug- gestions...

  10. Venemaa katkestas elektri tarnimise Valgevenele, võimalik on vastulöök / Kaivo Kopli

    Index Scriptorium Estoniae

    Kopli, Kaivo

    2011-01-01

    29. juunil peatas Vene energeetikakompanii Inter RAO elektriedastamise Valgevenele, kuna viimase võlg on kasvanud juba 600 miljoni rublani. Vene elektri osakaal Valgevene tarbimises on kuni 12%. Võlg olevat tekkinud sellest, et juba mitu kuud ei ole Valgevenes võimalik börsilt valuutat osta

  11. Ten years of operational boundary-layer measurements at the Richard - Aßmann Observatory Lindenberg: The role of remote sensing

    Science.gov (United States)

    Beyrich, F.; Engelbart, D. A. M.

    2008-05-01

    Remote sensing forms an essential part of the MOL-RAO boundary-layer measurements. Special emphasis will be put on the place of scintillometry as a technique to derive the sensible turbulent heat flux at the regional scale thus bridging the gap between local micrometeorological measurements and the typical spatial resolution of regional-scale meteorological models and of satellite images.

  12. Ten years of operational boundary-layer measurements at the Richard - Assmann Observatory Lindenberg: The role of remote sensing

    Energy Technology Data Exchange (ETDEWEB)

    Beyrich, F; Engelbart, D A M [Deutscher Wetterdienst Meteorologisches Observatorium Lindenberg/Richard - Assmann Observatorium Am Observatorium 12 D - 15864 Tauche - OT Lindenberg (Germany)], E-mail: frank.beyrich@dwd.de

    2008-05-01

    Remote sensing forms an essential part of the MOL-RAO boundary-layer measurements. Special emphasis will be put on the place of scintillometry as a technique to derive the sensible turbulent heat flux at the regional scale thus bridging the gap between local micrometeorological measurements and the typical spatial resolution of regional-scale meteorological models and of satellite images.

  13. Dicty_cDB: Contig-U06124-1 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available ultella planticola sucrose isom... 33 8.0 CP000023_1415( CP000023 |pid:none) Strept...20047. &CQ... 33 8.0 AY223549_1( AY223549 |pid:none) Pantoea dispersa sucrose isomerase... 33 8.0 AY227804_1( AY227804 |pid:none) Rao

  14. Evaluation of Shipboard Wave Estimation Techniques through Model-scale Experiments

    DEFF Research Database (Denmark)

    Nielsen, Ulrik Dam; Galeazzi, Roberto; H. Brodtkorb, Astrid

    2016-01-01

    The paper continues a study on the wave buoy analogy that uses shipboard measurements to estimate sea states. In the present study, the wave buoy analogy is formulated directly in the time domain and relies only partly on wave-vessel response amplitude operators (RAOs), which is in contrast to al...

  15. Performance analysis of a decoding algorithm for algebraic-geometry codes

    DEFF Research Database (Denmark)

    Høholdt, Tom; Jensen, Helge Elbrønd; Nielsen, Rasmus Refslund

    1999-01-01

    The fast decoding algorithm for one point algebraic-geometry codes of Sakata, Elbrond Jensen, and Hoholdt corrects all error patterns of weight less than half the Feng-Rao minimum distance. In this correspondence we analyze the performance of the algorithm for heavier error patterns. It turns out...

  16. Spacecraft Guidance Strategies for Proximity Maneuvering and Close Approach with a Tumbling Object

    Science.gov (United States)

    2010-03-01

    Optimization Solver (GPOPS) (Rao et al. 2009). The GPOPS is an open source code that implements the Gauss Pseudospectral Method for solving optimal control problems . As...Software. Ross, I. M. (2004), User’s Manual for DIDO: A MATLAB Application Package for Solving Optimal Control Problems , Tomlab Optimization, Sweden

  17. Scintillation of Light from Distant Objects due to Anisotropic and Non-Kolmogorov Turbulence

    Science.gov (United States)

    2013-09-01

    8. A. Silverman, E. Golbraikh, and N. S. Kopeika, “ Lidar studies of aerosols and non-Kolmogorov turbulence in the Mediterranean troposphere,” Proc...Propagation with Examples in MATLAB ”, (SPIE Press, Bellingham, Washington, 2010). 29. M. Vorontsov, V. S. Rao Gudimetla, G. Carhart, T. Weyrauch, S

  18. Maailmas jätkub Eesti nukufilmi edu

    Index Scriptorium Estoniae

    2003-01-01

    Rao Heidmetsa "Instinkt" sai kriitikute preemia ning žürii eripreemia ja Mati Küti "Nööbi odüsseia" Kunstide Arendusfondi eripreemia Ukrainas animafestivalil "Krok". Peterburi ökoloogiafilmide festivalil "Green Vision"sai "Instinkt" auhinna originaalseima ökoloogiaprobleemide interpretatsiooni eest. Kreekas Thessaonikis võitis Riho Undi - Julia Pihlaku "Pingviinide paraad" parima animafilmi preemia

  19. Occurrence of the spider crab Acanthonyx euryseroche, a seaweed associate along the central west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Joshi, S.A.; Savant, S.B.; Kulkarni, V.A.; Shenai-Tirodkar, P.; Emparanza, E.J.M.; Jagtap, T.G.

    , T. J. and Koteeswaran, R., Ploidy induction and sex con- trol in fish. Hydrobiologia, 1998, 384, 167–243. 11. Rao, G. R., Tripathi, S. D. and Sahu, A. K., Breeding and seed production of the Asian catfish Clarias batrachus (Lin.). Central...

  20. Investigation of Impurities in type-II InAs/GaSb Superlattices via Capacitance-Voltage Measurement

    Science.gov (United States)

    2013-07-17

    Phys. Lett. 92, 071102 (2008). 17T. V. Chandrasekhar Rao, J. Antoszewski, L. Faraone , J. B. Rodriguez, E. Plis, and S. Krishna, Appl. Phys. Lett. 92...1993). 25G. A. Umana-Membreno, B. Klein, H. Kala, J. Antoszewski, N. Gautam, M. N. Kutty, E. Plis, S. Krishna, and L. Faraone , Appl. Phys. Lett. 101

  1. Becoming an Interdisciplinary Scientist: An Analysis of Students' Experiences in Three Computer Science Doctoral Programmes

    Science.gov (United States)

    Calatrava Moreno, María del Carmen; Danowitz, Mary Ann

    2016-01-01

    The aim of this study was to identify how and why doctoral students do interdisciplinary research. A mixed-methods approach utilising bibliometric analysis of the publications of 195 students identified those who had published interdisciplinary research. This objective measurement of the interdisciplinarity, applying the Rao-Stirling index to Web…

  2. JPRS Report, Near East & South Asia, India

    Science.gov (United States)

    1991-09-04

    for a small negative list. 1990-91 is expected to be 177.2 million tonnes. This will eis be the third successive year of increased foodgrains The...occupied areas of Kashmir. mentioned it in the 1989 manifestoes. "So, you are the pioneers!" remarked Mr Rao with a touch of sarcasm . Meeting With Newsmen

  3. Efficient Iterated Filtering

    DEFF Research Database (Denmark)

    Lindström, Erik; Ionides, Edward; Frydendall, Jan;

    2012-01-01

    Parameter estimation in general state space models is not trivial as the likelihood is unknown. We propose a recursive estimator for general state space models, and show that the estimates converge to the true parameters with probability one. The estimates are also asymptotically Cramer-Rao effic...

  4. CORRELATES BETWEEN HUMAN LUNG INJURY AFTER PARTICLE EXPOSURE AND RECURRENT AIRWAY OBSTRUCTION IN THE HORSE

    Science.gov (United States)

    Characteristics of the clinical presentation, physiologic changes, and pathology of the human response to particulate matter (PM) are comparable to inflammatory airway disease (lAD) and recurrent airway obstruction (RAO)lheaves in the horse. Both present with symptoms of cough,...

  5. Eesti nukufilm sai järjekordse grand prix

    Index Scriptorium Estoniae

    2005-01-01

    XII Rahvusvaheline animafilmifestival "KROK-2005", mis toimus laeval, mis sõitis Kiievist Odessasse. Rao Heidmets ja Hardi Volmer said festivali karnevalil oma jänese kostüümi eest grand prix. Eesti filmidest olid programmis "Karl ja Marilyn", "Frank ja Wendy", "Barbarid", "Laud" ja "Conkistadoor"

  6. Microprocessors in the Curriculum and the Classroom.

    Science.gov (United States)

    Summers, M. K.

    1978-01-01

    This article, directed at teachers concerned with computer science courses at sixth-form level with no prior knowledge of microprocessors, provides a basic introduction, and describes possible applications of a microprocessor development system as a teaching aid in computer sciences courses in UK secondary school. (Author/RAO)

  7. Energiajulgeolek / Raivo Vare

    Index Scriptorium Estoniae

    Vare, Raivo, 1958-

    2007-01-01

    Et Gazprom ja elektrienergiamonopol RAO EES toimivad Vene riigi käepikendusena ning Venemaa on rakendanud majandussanktsioone, pingestunud on riikidevahelised suhted, näeb autor põhjust tunda muret energeetika vallas, kuid vaid juhul, kui ei rakendu alternatiiv: elektri saamine uutest allikatest, Soomest, selle kaudu Põhjamaadest ning edaspidi ka mujalt

  8. Analgesic synergism of gabapentin and carbamazepine in rat model ...

    African Journals Online (AJOL)

    Tropical Journal of Pharmaceutical Research June 2016; 15 (6): 1191-1195. ISSN: 1596-5996 ... (CBZ) and gabapentin (GBP) in diabetic neuropathic pain. Methods: Neuropathic pain ..... J Korean Med 2010; 31(3): 1-7. 13. Rao BS, Reddy KE, ...

  9. Heidmetsa film Stuttgardis üks publiku lemmikuid

    Index Scriptorium Estoniae

    2004-01-01

    Stuttgardi animafilmide festivali võistlusprogrammis olid Eestist Rao Heidmetsa "Instinkt" ja Hardi Volmeri "Barbarid" stuudiolt Nukufilm ja Priit Pärna "Karl ja Marilyn" ning Ülo Pikkovi "Ahviaasta" Eesti Joonisfilmilt. Lastefilmide seas võistleb Pärtel Talli "Porgand". Telepubliku telefonihääletusel sai "Instinkt" teise koha, saades preemiaks 4000 eurot

  10. Fabrika kukolnõhh grjoz / Svetlana Karabut

    Index Scriptorium Estoniae

    Karabut, Svetlana

    2008-01-01

    Külaskäik Nukufilmi stuudiosse Niine tänaval. Stuudiot tutvustab produtsent Kerdi Oengo, jälgitakse kuidas valmib lõik filmile "Lili Marleen" (Marili Toome ja Ulvi Tiidu käe all). Rao Heidmets kommenteerib oma filmi "Kaasasündinud kohustused" võttetehnikat ja põhjendab miks valmivad stuudios just lühianimafilmid

  11. Climate Change Impacts at Department of Defense Installations

    Science.gov (United States)

    2017-06-16

    ANL/EVS-17/9 Climate Change Impacts at Department of Defense Installations Environmental Science Division About...LLC. June 16, 2017 ANL/EVS-17/9 Climate Change Impacts at Department of Defense Installations prepared by Rao Kotamarthi...7 3.2 Use of Weather Data and Views on Climate Change among the DoD Site Contacts

  12. Gazprom Market for energy installations using fuel cells

    Energy Technology Data Exchange (ETDEWEB)

    Galitskiy, Yu.V.

    1996-04-01

    The Gazprom RAO [Russian joint-stock company] is a major industrial and financial complex whose job is to provide gas for the national economy of Russia, as well as to supply it under international and intergovernmental agreements. The existing capacity of its production structures and high level of scientific potential allow Gazprom to forecast the future with confidence.

  13. Comentari de llibres

    OpenAIRE

    1993-01-01

    Comentari del llibre: Radhakrishna Rao, C. ESTADÍSTICA Y VERDAD: Aprovechando el Azar. Publicaciones y Promociones Universitarias. Barcelona, 1994. Comentari del llibre: Judith M. Tanur, Frederick Mosteller, William H. Kruskal, Erich L. Lehmann, Richard F. Link, Richard S. Pieters, Gerald R. Rising (editores). La estadística: Una guia de lo desconocido Alianza Editorial, SA. Madrid, 1992. Peer Reviewed

  14. Antisense Oligodeoxynucleotide Inhibition of HIV Gene Expression

    Science.gov (United States)

    1989-03-20

    8162t1986). (8, 8) (0. I) (424-911) 26. Neckers, L M., Bauer, S.. Mc~ lernen , R. C., Trepel, J. B., Rao, K. & Greene, W. C. Mdclc. PHA-stirnulated cells 40 30...actoimyosin.ADP.Pi state; and (3) 0 S. was a visiting fellow supported by the Deutsche Kreb- that a preceding step, probably an actomyosln.ADP.Pi lsoineri

  15. An Evaluation of Computer-Aided Instruction in an Introductory Biostatistics Course.

    Science.gov (United States)

    Forsythe, Alan B.; Freed, James R.

    1979-01-01

    Evaluates the effectiveness of computer assisted instruction for teaching biostatistics to first year students at the UCLA School of Dentistry. Results do not demonstrate the superiority of CAI but do suggest that CAI compares favorably to conventional lecture and programed instruction methods. (RAO)

  16. Are Anti-Inflammatory Lymphocytes Able to Induce Remission of Breast Cancer. Addendum

    Science.gov (United States)

    2007-02-01

    et al. CTLA4Ig inhibits T cell-dependent B-cell maturation in murine systemic lupus erythematosus . J Clin Invest 2000;106:91–101. 22. Erdman SE, Rao...Pierre F. Point: from animal models to prevention of colon cancer. Systematic review of chemoprevention in min mice and choice of the model system

  17. Optimal State Estimation of Ballistic Trajectories with Angle-Only Measurements

    Science.gov (United States)

    1979-01-24

    An iterative least square estimation algorithm is dervied and applied to the problem of state estimation of ballistic trajectories with angle-only... least square filter achieves the Cramer-Rao bound and it performs better than the extended Kalman filter when the sensor is on a free-falling platform

  18. Utilizing Spectrum Efficiently (USE)

    Science.gov (United States)

    2011-02-28

    and transmission rates to maximize the expected values of forward progress [3,5,21,33] as well as trans- port capacity [18,27] over a Nakagami -m channel...2009. [27] T. D. Goswami, J. M. Shea, T. F. Wong, M. Rao, and J. Glover, “Maximizing Transport Capacity for Geographic Transmission on Nakagami -m

  19. Transcriptomic profile of two canine mammary cancer cell lines with different proliferative and anti-apoptotic potential

    NARCIS (Netherlands)

    Krol, M.; Skierski, J.; Rao, N.A.; Hellmen, E.; Mol, J.A.; Motyl, T.

    2009-01-01

    J Physiol Pharmacol. 2009 May;60 Suppl 1:95-106. Transcriptomic profile of two canine mammary cancer cell lines with different proliferative and anti-apoptotic potential. Krol M, Pawlowski KM, Skierski J, Rao NA, Hellmen E, Mol JA, Motyl T. Department of Physiological Sciences, Faculty of Veterinary

  20. The effects of source credibility and salience on sales performance: a study of corporate art collectors

    NARCIS (Netherlands)

    Kackovic, M.; Ebbers, J.J.; Wijnberg, N.M.; Kubacki, K.

    2015-01-01

    Signaling theory (Spence, 1973) focuses on using signals as proxies of quality and helps explain how signals reduce uncertainties in pre-purchase decision-making. Signals convey information about a product or producer’s unobservable or indiscernible quality (Kirmani and Rao, 2000), and are important

  1. Occupancy Grid Map Merging Using Feature Maps

    Science.gov (United States)

    2010-11-01

    Gonzalez, “Toward a unified bayesian approach to hybrid metric-topological SLAM,” IEEE Transactions on Robotics , 24(2), April 2008, 259-270. [14] G...Risetti, C. Stachniss, and W. Burgard, “Improved Techniques for grid mapping with Rao-Blackwellized Particle Filter,” IEEE Transactions on Robotics , 23

  2. Algab suur animatsioonipidu

    Index Scriptorium Estoniae

    2007-01-01

    PÖFFi animafilmide festivali "Animated Dreams" (21.-25. XI ), mis on seekord pühendatud Nukufilmi 50. juubelile, avatakse täna kell 19 kinos Sõprus. Avaseansil linastub kolm Eesti animafilmi : Rao Heidmetsa "Papa Carlo teater" (1988), Riho Undi "Kapsapea" (1993) ja Priit Tenderi "Rebasenaine" (2002)

  3. The Hunger Games: Salmonella, Anorexia, and NLRP3.

    Science.gov (United States)

    O'Neill, Luke A J

    2017-02-07

    Rao and colleagues (2017) reveal how Salmonella limits anorexia in mice, protecting them and promoting the spread of infection. The mechanism involves inhibition of the NLRP3 inflammasome limiting vagal nerve stimulation by IL-1β, which in turn promotes appetite. A possible new therapeutic approach for treating anorexia in multiple diseases is proposed. Copyright © 2017 Elsevier Inc. All rights reserved.

  4. CORRELATES BETWEEN HUMAN LUNG INJURY AFTER PARTICLE EXPOSURE AND RECURRENT AIRWAY OBSTRUCTION IN THE HORSE

    Science.gov (United States)

    Characteristics of the clinical presentation, physiologic changes, and pathology of the human response to particulate matter (PM) are comparable to inflammatory airway disease (lAD) and recurrent airway obstruction (RAO)lheaves in the horse. Both present with symptoms of cough,...

  5. A Best Practices Guide in Social Skills Training for Kindergarten Teachers of Children with High Functioning Autism Spectrum Disorder

    Science.gov (United States)

    Levine, Mandi Danielle

    2012-01-01

    This dissertation identifies social skills as the central treatment concern for young children with Asperger's Syndrome (AS)/High Functioning Autism Spectrum Disorder (HFASD) in an educational setting (Attwood, 1998; Macintosh & Dissanayake, 2006; Rao, Beidel, & Murray, 2008; Sansosti, 2010; Sansosti, Powell-Smith, & Cowan, 2010).…

  6. Phytoncide, Nanochemicals from Chamaecyparis obtusa, Inhibits Proliferation and Migration of Vascular Smooth Muscle Cells.

    Science.gov (United States)

    Lim, Leejin; Jang, Young-Su; Yun, Je-Jung; Song, Heesang

    2015-01-01

    Phytoncide, nanochemicals extracted from Chamaecyparis obtusa (C. obtusa), is reported to possess many pharmacological activities including immunological stimulating, anti-cancer, antioxidant, and antiinflammatory activities. However, the effect of phytoncide in vascuar diseases, especially on the behavior of vascular smooth muscle cells, has not yet been clearly elucidated. Therefore, in the present study, we investigated the effects of 15 kinds of phytoncide by various extraction conditions from C. obtusa on the proliferation and migration in rat aortic smooth muscle cells (RAoSMCs). First of all, we determined the concentration of each extracts not having cytotoxicity by MTT assay. We observed that the proliferation rate measured using BrdU assay was significantly reduced by supercritical fluid, steam distillation, Me-OH, and hexane extraction fraction in order with higher extent, respectively. Moreover, the treatment of above nanofractions inhibit the migration of RAoSMCs by 40%, 60%, and 30%, respectively, both in 2-D wound healing assay and 3-D boyden chamber assay. Immunoblot revealed that the phosphorylated levels of Akt and ERK were significantly reduced in nanofractions treated RAoSMCs. Taken together, these data suggest that phytoncide extracted from C. obtusa inhibits proliferation and migration in RAoSMCs via the modulation of phosphorylated levels of Akt and ERK. Therefore, phytoncide nanomolecules might be a potential therapeutic approach to prevent or treat atheroscrelosis and restenosis.

  7. Neural and Behavioral Sequelae of Blast-Related Traumatic Brain Injury

    Science.gov (United States)

    2012-11-01

    a pre-application to TATRC entitled “Advanced Neuroimaging of Chronic Traumatic Encephalopathy in Retired NFL Football Players.” This pre...Radiology Jones, Stephen; Cleveland Clinic, Diagnostic Radiology Newsome, Mary; Baylor College of Medicine, PM&R Cognitive Neuroscience Laboratory...Center, Neurology Levin, Harvey; Baylor College of Medicine, Cognitive Neuroscience Laboratory Rao, Stephen; Cleveland Clinic, Schey Center for

  8. Dicty_cDB: VSK131 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 1 rb27a07.y1 Meloidogyne incognita egg pAMP1 Bird Meloidogyne incognita cDNA 5' s...MER31 repetitive element ;, mRNA sequence. 48 0.14 1 AW828823 |AW828823.1 ra74e11.y1 Bird-Rao Meloidogyne in

  9. Dicty_cDB: SSD315 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available clone BB170024A20D04 5', mRNA sequence. 64 4e-12 3 AW570895 |AW570895.1 ra12e05.y1 Bird-Rao Meloidogyne inc... D ;contains Alu repetitive element;, mRNA sequence. 76 7e-10 1 AW588730 |AW588730.1 ra03h09.y2 Bird

  10. Dicty_cDB: AFK792 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available c11.y1 Meloidogyne incognita egg pAMP1 Bird Meloidogyne incognita cDNA 5' similar...814 |AW827814.1 ra59b10.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne incognita cDNA 5' similar to WP:K10

  11. Dicty_cDB: SSE424 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available D04 5', mRNA sequence. 64 3e-12 3 AW570895 |AW570895.1 ra12e05.y1 Bird-Rao Meloid...E SUBUNIT D ;contains Alu repetitive element;, mRNA sequence. 76 6e-10 1 AW588730 |AW588730.1 ra03h09.y2 Bird

  12. Vertical Ship Motion Study for Savannah, GA Entrance Channel

    Science.gov (United States)

    2011-09-01

    Theory ........................................................................................................................ 36  3.1  PIANC squat...rolling. Static equilibrium is based on the Archimedes Principle where the weight W of the ship and cargo is balanced by the weight B of the water...ship motion heave, pitch, and roll RAOs are calculated using a frequency-domain, shallow water, strip- theory program SCORES (Kaplan 1996a & b). In a

  13. Dog Is a Dog Is a Dog: Infant Rule Learning Is Not Specific to Language

    Science.gov (United States)

    Saffran, Jenny R.; Pollak, Seth D.; Seibel, Rebecca L.; Shkolnik, Anna

    2007-01-01

    Human infants possess powerful learning mechanisms used for the acquisition of language. To what extent are these mechanisms domain specific? One well-known infant language learning mechanism is the ability to detect and generalize rule-like similarity patterns, such as ABA or ABB [Marcus, G. F., Vijayan, S., Rao, S. B., & Vishton, P. M. (1999).…

  14. Maailmas jätkub Eesti nukufilmi edu

    Index Scriptorium Estoniae

    2003-01-01

    Rao Heidmetsa "Instinkt" sai kriitikute preemia ning žürii eripreemia ja Mati Küti "Nööbi odüsseia" Kunstide Arendusfondi eripreemia Ukrainas animafestivalil "Krok". Peterburi ökoloogiafilmide festivalil "Green Vision"sai "Instinkt" auhinna originaalseima ökoloogiaprobleemide interpretatsiooni eest. Kreekas Thessaonikis võitis Riho Undi - Julia Pihlaku "Pingviinide paraad" parima animafilmi preemia

  15. Turbulent Boundary Layer on a Cylinder in Axial Flow

    Science.gov (United States)

    1988-09-29

    wall- norma 6caling or Rao’s wall-normal scaling. Other measurements of the mean velocity in a cylindrical boundary layer should be mentioned for...located near the wall at three azimuthal locations that w𔃽re 900 apa ,-t and at several streamwise spacings for flow conditions resulting in 8/a=8

  16. Proximate composition, bread

    African Journals Online (AJOL)

    Toshiba

    2011-12-07

    Dec 7, 2011 ... is important to consume this bread with other protein rich diet in order to .... Sensory evaluation based on the sensory attributes were conducted by using a ..... rice flour properties on specific loaf volume of one-loaf bread made from rice ... Rao HP and R Hemamalini Effect of incorporating wheat bran on.

  17. The Effects of Televised Drug Commercials on Children.

    Science.gov (United States)

    Sheiman, Deborah Lovitky

    This paper addresses the issue of non-prescription drug commercials appearing on commercial television and the impact that they have on children. Self-regulatory standards set by the National Association of Broadcasters are cited, and research concerning children and drug commercials is discussed. A brief bibliography is attached. (RAO)

  18. QTL Information Table: 234 [Q-TARO

    Lifescience Database Archive (English)

    Full Text Available L. (2002). Analysis on additive effects and additive-by-additive epistatic effects of QTLs for yield traits ...shan 97B Milyang 46 A RZ398 RM204 pha Zhuang, J.Y., Fan, Y.Y., Rao, Z.M., Wu, J.L., Xia, Y.W., and Zheng, K.

  19. QTL Information Table: 239 [Q-TARO

    Lifescience Database Archive (English)

    Full Text Available ve effects and additive-by-additive epistatic effects of QTLs for yield traits in a... 97B Milyang 46 A RG561 RM228 pha Zhuang, J.Y., Fan, Y.Y., Rao, Z.M., Wu, J.L., Xia, Y.W., and Zheng, K.L. (2002). Analysis on additi

  20. Educational Research and Development: How to Influence School Practices.

    Science.gov (United States)

    Gagne, Robert M.

    1980-01-01

    Suggested are basic ways in which a system of educational research and development may meet the demand for successful R&D, from the formulation of research questions to the utilization of results. Stressed are local ownership of school-based R&D, the development of applied research efforts, and the utilization of outcomes. (RAO)

  1. Development of conceptual groundwater flow model for Pali Area ...

    African Journals Online (AJOL)

    use

    be accelerated due to climate change (Mall et al., 2006). Groundwater ... experiencing groundwater pollution problem due to rapid industrialization ... LITERATURE REVIEW ... the impact of a proposed action on existing conditions of ..... Water Air. Soil Pollut., 128: 369-389. Gurunadha Rao VVS, Thangarajan M (1999).

  2. Maxi Authoring Languages in the Era of the Mini

    Science.gov (United States)

    Lower, Stephen K.

    1977-01-01

    It is argued that the need for inadequate languages, those "simplified" languages that are scaled down to the limits of the present-day small computer, will soon disappear. Utilization of an extensive language base, even if it is developed on computers exceeding the capabilities of the target minis is suggested. (Author/RAO)

  3. On the network thermodynamics of mass action chemical reaction networks

    NARCIS (Netherlands)

    Schaft, A.J. van der; Rao, S.; Jayawardhana, B.

    In this paper we elaborate on the mathematical formulation of mass action chemical reaction networks as recently given in van der Schaft, Rao, Jayawardhana (2012). We show how the reference chemical potentials define a specific thermodynamical equilibrium, and we discuss the port-Hamiltonian

  4. An Evaluation of Computer-Aided Instruction in an Introductory Biostatistics Course.

    Science.gov (United States)

    Forsythe, Alan B.; Freed, James R.

    1979-01-01

    Evaluates the effectiveness of computer assisted instruction for teaching biostatistics to first year students at the UCLA School of Dentistry. Results do not demonstrate the superiority of CAI but do suggest that CAI compares favorably to conventional lecture and programed instruction methods. (RAO)

  5. Indicators of the interdisciplinarity of journals: diversity, centrality, and citations

    NARCIS (Netherlands)

    Leydesdorff, L.; Rafols, I.

    2011-01-01

    A citation-based indicator for interdisciplinarity has been missing hitherto among the set of available journal indicators. In this study, we investigate network indicators (betweenness centrality), unevenness indicators (Shannon entropy, the Gini coefficient), and more recently proposed Rao-Stirlin

  6. Characterization and Simulation of an Acoustic Source Moving through an Oceanic Waveguide

    Science.gov (United States)

    1994-09-01

    algorithms, classical spectrum estimation methods are employed [1, 2] to estimate the auto- and cross-spectra of data received at the array of...Acoust. Soc. Am., 65(3):675-681 (March). [4] Rao, Kodali V., Thomas M. Michaud, and Henrik Schmidt. 1991. "Doppler shifts in underwater acoustics using

  7. Immune Protection of Nonhuman Primates Against Ebola Virus with Single Low-Dose Adenovirus Vectors Encoding Modified GPs

    Science.gov (United States)

    2006-06-01

    then fusing to TGA. The resulting plasmid also contained four extra amino acids (aa) at the C terminus ( MAAS ). HEK293 cells and the derivative T-Ag...Phil Gomez, Charla Andrews, Judy Stein, J. P. Todd, Vi Dang, Srinivas Rao, Sarah Norris, and Martha Nason for helpful discussions. Disclaimer: The

  8. Comment on the Paper ’Electron Bombardment Fragmentation of Size Selected NH3 Clusters’

    Science.gov (United States)

    1990-04-10

    A. W Castleman, Jr., Ber. Bunsenges. Phys. Chem. 88, 217 (1984). 3) H. Shinohara, N. Nishi, and N. Washida, J. Chem. Phys. 83, 1939 (1985). 4) W Kamke ...B. Kamke , Z. Whang, R. Herrmann, and I. V. Hertel in Physics and ChemLstry of Small Clusters, edited by P Jena, B. K. Rao, and S. N. Khama (Plenum

  9. Ringstone anchors from Gujarat, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.; Sundaresh; Tripati, S.; Bandodkar, S.N.

    as doorjambs (Rao, 1999). Similar types of ring stone have also been reported from off Oman and it is suggested by the local people of that region that they would have been used as anchors for fishing nets. However, the description given by local fishermen...

  10. Evidence of fault reactivation off Pondicherry coast from marine geophysical data

    Digital Repository Service at National Institute of Oceanography (India)

    Murty, G.P.S.; Subrahmanyam, A.S.; Murthy, K.S.R.; Sarma, K.V.L.N.S.

    of IGU, H y derabad, 1996, pp. 56 ? 57. 7. Drury, S. A., Harri s, N. B. W., Host, B. W., Reeves Smith, G. J. and Wigh t- man, R. T., J. Geol. Soc. India , 1984, 42 , 3 ? 20. 8. Gopala Krishnan, K., Venkat Rao, V. and Viswanathan, P. T. V...

  11. SOLFEAS: An Interactive Program for Estimating the Economic Feasibility of an Active Solar Thermal Energy System.

    Science.gov (United States)

    1983-01-01

    23174 Mount Shasta 24215 61 SOLMET stateStation Number Needles 23 17 9 Oakland 23230 Point Magu 93111 Red Bluff 24216 Sacramento 23232 San Diego 23188...CCB-OPS 00ile 36608 Fort Monmaoth 07703 Infrastructure Branch. LANDA 44 SIvl I e 37ZO2 Letterkenny Army Depot 17201 ’"- England 32154 Natick RAO Ctr

  12. Liquid Chromatography Applications to Determination of Sorption on Aquifer Materials

    Science.gov (United States)

    1989-11-01

    1985) observed a similar factor between column and batch sorption coefficients for nematicides on soils. They noted that this may be a consequence of...Development Branch, Norris, TN 37828 (1985). J. N. Bilkert and P. S. C. Rao. Sorption and leaching of three non-fumigant nematicides in soils. J

  13. Prediction of Future Observations in Polynomial Growth Curve Models. Part 1.

    Science.gov (United States)

    1983-03-01

    UNIT NUMBERS University of Pittsburgh, Ninth Floor, PE6llO2F; 2304/A5 Schenley Hall, Pittsburgh PA 15260 It CONTROLLING OFFICE NAME AND ADDRESS 12...8217. DSIM Enitvd, ’ SR-TR. 8 3 0491 PREDICTION OF FUTURE OBSERVATIONS IN POLYNOMIAL GROWTH CURVE MODELS PART - 1 C. Radhakrishna Rao University of Pittsburgh

  14. Some Conceptual Issues in Computer-Assisted Instruction.

    Science.gov (United States)

    Kearsley, Greg P.

    1977-01-01

    The design of CAI for individualization of instruction and its relationship to broader educational systems is detailed. Effectiveness of CAI in various student populations and subject matter is presented, as well as design methods, and research studies in cognitive psychology and artificial intelligence are reviewed. (RAO)

  15. Ulnar Artery Compression: A Feasible and Effective Approach to Prevent the Radial Artery Occlusion after Coronary Intervention

    Institute of Scientific and Technical Information of China (English)

    Jun Tian; Yu-Shun Chu; Jing Sun; Tie-Min Jiang

    2015-01-01

    Background:Radial artery (RA) occlusion (RAO) is not rare in patients undergoing coronary intervention by transradial approach (TRCI).Predictors of and prevention from RAO have not been systematically studied.This study aimed to analyze the risk factors of the weakness of RA pulsation (RAP) and its predictive value for RAO after TRCI,and simultaneously to describe a feasible and effective approach to maintain RA patency.Methods:Between June 2006 and March 2010,all patients who underwent TRCI were classified according to the weakness of RAP after removing compression bandage with confirmation by Doppler ultrasound for the first 30 consecutive patients.Among a total of 2658 patients studied,187 (7%) patients having a weaker RAP were prospectively monitored.At 1 h after bandage removal,the ulnar artery in puncture side of all patients was blocked with manual compression to favor brachial and collateral artery blood flow through the RA until a good RAP was restored.The primary analysis was the occurrence of RAO.Results:Doppler ultrasound demonstrated the significant reduction of both systolic velocity (61.24 ± 3.95 cm/s vs.72.31 ± 3.57 cm/s)and diastolic velocity (1.83 ± 0.32 cm/s vs.17.77 ± 3.97 cm/s) in RA at access side as compared to the contralateral RA (all P < 0.001),but these velocities in ipsilateral ulnar artery (81.2 ± 2.16 cm/s and 13.1 ± 2.86 cm/s,respectively) increased profoundly.The average time of ulnar artery compression was 4.1 ± 1.2 h (ranged 2.5-6.5 h).There were two patients experienced persistent RAO with a success rate of 98.9% and RAO in 0.075% of patients after ulnar artery compression was applied.The pulsation of the ulnar artery after compression was removed had not been influenced by the compression.Conclusions:After intervention using TRCI approach,the presence of a weaker RAP is an indicator of imminent RAO.The continuing compression of ipsilateral ulnar artery is an effective approach to maintain RA patency.

  16. Ulnar Artery Compression: A Feasible and Effective Approach to Prevent the Radial Artery Occlusion after Coronary Intervention

    Directory of Open Access Journals (Sweden)

    Jun Tian

    2015-01-01

    Full Text Available Background: Radial artery (RA occlusion (RAO is not rare in patients undergoing coronary intervention by transradial approach (TRCI. Predictors of and prevention from RAO have not been systematically studied. This study aimed to analyze the risk factors of the weakness of RA pulsation (RAP and its predictive value for RAO after TRCI, and simultaneously to describe a feasible and effective approach to maintain RA patency. Methods: Between June 2006 and March 2010, all patients who underwent TRCI were classified according to the weakness of RAP after removing compression bandage with confirmation by Doppler ultrasound for the first 30 consecutive patients. Among a total of 2658 patients studied, 187 (7% patients having a weaker RAP were prospectively monitored. At 1 h after bandage removal, the ulnar artery in puncture side of all patients was blocked with manual compression to favor brachial and collateral artery blood flow through the RA until a good RAP was restored. The primary analysis was the occurrence of RAO. Results: Doppler ultrasound demonstrated the significant reduction of both systolic velocity (61.24 ± 3.95 cm/s vs. 72.31 ± 3.57 cm/s and diastolic velocity (1.83 ± 0.32 cm/s vs. 17.77 ± 3.97 cm/s in RA at access side as compared to the contralateral RA (all P < 0.001, but these velocities in ipsilateral ulnar artery (81.2 ± 2.16 cm/s and 13.1 ± 2.86 cm/s, respectively increased profoundly. The average time of ulnar artery compression was 4.1 ± 1.2 h (ranged 2.5-6.5 h. There were two patients experienced persistent RAO with a success rate of 98.9% and RAO in 0.075% of patients after ulnar artery compression was applied. The pulsation of the ulnar artery after compression was removed had not been influenced by the compression. Conclusions: After intervention using TRCI approach, the presence of a weaker RAP is an indicator of imminent RAO. The continuing compression of ipsilateral ulnar artery is an effective approach to

  17. Transcatheter Arterial Embolization of Renal VX-2 Carcinoma: Ethiodol-Ethanol Capillary Embolization Combined with Carboplatin

    Energy Technology Data Exchange (ETDEWEB)

    Konya, Andras; Pelt, Carolyn S. Van; Wright, Kenneth C. [The University of Texas MD Anderson Cancer Center, Hoston (United States); Choi, Byung Gil [The Catholic University of Korea, Seoul (Korea, Republic of)

    2007-04-15

    We wanted to determine whether transcatheter Ethiodol-based capillary embolization in combination with carboplatin could improve the efficiency of a 1:1 Ethiodol-ethanol mixture (EEM) to ablate kidneys that been inoculated with VX-2 carcinoma. The right kidney in 34 New Zealand white rabbits were inoculated with fresh VX-2 tumor fragments. One week later, the kidneys were subjected to transarterial treatment (4-5 rabbits/group): Saline infusion (Group 1); carboplatin infusion (5 or 10 mg, Groups 2A and 2B); carboplatin- Ethiodol (CE) alone (Group 3) and followed by main renal artery occlusion with ethanol (RAO) (Group 4); carboplatin-EEM (C-EEM) followed by RAO (Group 5); carboplatin infusion followed by EEM plus RAO (Group 6); and EEM followed by RAO (Group 7). The animals were followed for up to 3-weeks. The treated kidneys were evaluated angiographically and macroscopically. The kidneys that showed successful embolization macroscopically were entirely cut into serial sections, and these were examined microscopically. Histologically, the kidneys were evaluated on the basis of the residual tumor found in the serial sections. The results obtained with carboplatin infusion alone (Groups 2A and 2B) and CE without RAO (Group 3) were similar to those of the control animals (Group 1). Kidneys from Groups 4-7 demonstrated macroscopically successful embolization with histologically proven complete renal parenchyma infarction; however, some residual tumor was evident in all but one animal. None of the Ethiodol-based modalities combined with locoregional carboplatin were more efficacious for tumor ablation than EEM alone.

  18. Effect of naringin on hemodynamic changes and left ventricular function in renal artery occluded renovascular hypertension in rats

    Directory of Open Access Journals (Sweden)

    Asjad Visnagri

    2015-01-01

    Full Text Available Background: Renal artery occlusion (RAO induced hypertension is a major health problem associated with structural and functional variations of the renal and cardiac vasculature. Naringin a flavanone glycoside derived possesses metal-chelating, antioxidant and free radical scavenging properties. Objective: The objective of this study was to investigate the antihypertensive activity of naringin in RAO induced hypertension in rats.Material and Methods: Male Wistar rats (180-200 g were divided into five groups Sham, RAO, naringin (20, 40 and 80 mg/kg. Animals were pretreated with naringin (20, 40 and 80 mg/kg p.o for 4 weeks. On the last day of the experiment, left renal artery was occluded with renal bulldog clamp for 4 h. After assessment of hemodynamic and left ventricular function various biochemical (superoxide dismutase [SOD], glutathione [GSH] and malondialdehyde [MDA] and histological parameters were determined in the kidney. Results: RAO group significantly (P < 0.001 increased hemodynamic parameters at 15, 30 and 45 min of clamp removal. Naringin (40 and 80 mg/kg treated groups showed a significant decrease in hemodynamic parameters at 15 min. after clamp removal that remained sustained for 60 min. Naringin (40 and 80 mg/kg treated groups showed significant improvement in left ventricular function at 15, 30 and 45 min after clamp removal. Alteration in level of SOD, GSH and MDA was significantly restored by naringin (40 and 80 mg/kg treatment. It also reduced histological aberration induced in kidney by RAO. Conclusion: It is concluded that the antihypertensive activity of naringin may result through inhibition of oxidative stress.

  19. Optimization of fringe-type laser anemometers for turbine engine component testing

    Science.gov (United States)

    Seasholtz, R. G.; Oberle, L. G.; Weikle, D. H.

    1984-01-01

    The fringe type laser anemometer is analyzed using the Cramer-Rao bound for the variance of the estimate of the Doppler frequency as a figure of merit. Mie scattering theory is used to calculate the Doppler signal wherein both the amplitude and phase of the scattered light are taken into account. The noise from wall scatter is calculated using the wall bidirectional reflectivity and the irradiance of the incident beams. A procedure is described to determine the optimum aperture mask for the probe volume located a given distance from a wall. The expected performance of counter type processors is also discussed in relation to the Cramer-Rao bound. Numerical examples are presented for a coaxial backscatter anemometer. Previously announced in STAR as N84-25019

  20. Conceptual Design of a Deep Draft Semi-Submersible Platform with a Moveable Heave-Plate

    Institute of Scientific and Technical Information of China (English)

    ZHU Hang; OU Jinping; ZHAI Gangjun

    2012-01-01

    Based on the principle of turned mass damper (TMD) systems,the conceptual design of semi-submersible platform with a moveable heave-plate (MHS) has been put forward.The heave motion response amplitude operator (RAO) and viscous damping of the MHS platform are calculated by iteration,and the coupling stiffness between the MHS hull and the heave-plate is optimized to decrease the maximum heave motion response of the MHS hull under 10-year survival conditions in the South China Sea.The numerical results indicate that the heave motion RAO of the MHS hull can be decreased in the range of predominant wave frequencies,which may provide some reference to the heave motion control of offshore platforms.

  1. Linear algebra and group theory for physicists

    CERN Document Server

    Rao, K N Srinivasa

    2006-01-01

    Professor Srinivasa Rao's text on Linear Algebra and Group Theory is directed to undergraduate and graduate students who wish to acquire a solid theoretical foundation in these mathematical topics which find extensive use in physics. Based on courses delivered during Professor Srinivasa Rao's long career at the University of Mysore, this text is remarkable for its clear exposition of the subject. Advanced students will find a range of topics such as the Representation theory of Linear Associative Algebras, a complete analysis of Dirac and Kemmer algebras, Representations of the Symmetric group via Young Tableaux, a systematic derivation of the Crystallographic point groups, a comprehensive and unified discussion of the Rotation and Lorentz groups and their representations, and an introduction to Dynkin diagrams in the classification of Lie groups. In addition, the first few chapters on Elementary Group Theory and Vector Spaces also provide useful instructional material even at an introductory level. An author...

  2. Cirurgia valvar e coronária simultânea Combined coronary and valvular surgery

    Directory of Open Access Journals (Sweden)

    Pablo M. A Pomerantzeff

    1994-12-01

    Full Text Available Este trabalho analisa 172 pacientes consecutivos operados de cirurgia valvar e coronária simultânea, no período compreendido entre julho de 1980 e junho de 1989.0 número de pacientes submetidos a revascularização do miocárdio e tratamento cirúrgico da valva aórtica (RAo foi de 95, sendo que 75 foram submetidos a tratamento cirúrgico da valva mitral e revascularização do miocárdio (RMi. As lesões valvares mais freqüentes foram a estenose aórtica, 44 casos de insuficiência mitral em 40 casos. O número de anastomoses por paciente foi de 1,87 em média para os pacientes RMi e de 1,56 nos pacientes RAo. A mortalidade hospitalar foi de 9,8% sendo que a mortalidade para os pacientes RAo foi de 7,3% e para os pacientes RMi foi de 12%. Não houve diferença significativa (x²=04423 entre a mortalidade dos pacientes portadores de insuficiência mitral isquémica, operados eletivamente ou em caráter de emergência, sendo a mortalidade de 20% nos eletivos e de 37,5% nos de emergência. Não houve relação entre mortalidade e número de anastomoses por paciente. Houve tendência de melhores resultados com relação à mortalidade nos pacientes RMi com cirurgia conservadora (x²=1,6382. A curva actuarial de sobrevida mostra 82,6% em 19 semestres para os pacientes RMi, 90,4% para os pacientes RAo e 86,3% para o estudo global de pacientes. Com uma evolução de 5172 meses/pacientes, 75% apresentam-se em classe funcional I (NYHA.In the period between July 1980 and June 1989,172 consecutive patients were submitted to combined coronary and valvular surgery. There were patients with predominantly valvular indications and others with predominant coronary indications. In 95 cases, myocardial revascularization and surgical treatment of the aortic valve (RAo were simultaneously performed. Seventy five patients were submitted to myocardial revascularization and surgical treatment of the mitral valve (RMi. The more frequent valvular lesions were

  3. Characterization of qubit chains by Feynman probes

    Science.gov (United States)

    Tamascelli, Dario; Benedetti, Claudia; Olivares, Stefano; Paris, Matteo G. A.

    2016-10-01

    We address the characterization of qubit chains and assess the performances of local measurements compared to those provided by Feynman probes, i.e., nonlocal measurements realized by coupling a single-qubit register to the chain. We show that local measurements are suitable to estimate small values of the coupling and that a Bayesian strategy may be successfully exploited to achieve optimal precision. For larger values of the coupling Bayesian local strategies do not lead to a consistent estimate. In this regime, Feynman probes may be exploited to build a consistent Bayesian estimator that saturates the Cramér-Rao bound, thus providing an effective characterization of the chain. Finally, we show that ultimate bounds to precision, i.e., saturation of the quantum Cramér-Rao bound, may be achieved by a two-step scheme employing Feynman probes followed by local measurements.

  4. FY 1999 project on the development of new industry support type international standards. Standardization of a method to evaluate the performance of open robot use communication interface in production system, etc.; 1999 nendo shinki sangyo shiengata kokusai hyojun kaihatsu jigyo seika hokokusho. Seisan system nado ni okeru open robot yo tsushin interface no hyojunka

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-03-01

    For the purpose of standardizing the communication interface system between personal computers and robots, the R and D were conducted on ORiN (Open Robot Interface for the Network), and the FY 1999 results were summed up. ORiN is composed of the provider part, kernel part and application logic part. The provider absorbs differences in expression and protocols of robot controller data of each company and conveys them to the kernel part. The kernel part is composed of RAO and RDF. RAO adopts the disperse object model DCOM technology and supplies the network transparency and common access method to robot. RDF supplies files with expansion of robot structure models using XML. By this, ORiN was made adoptable for future, permitting differences in each robot. In the International Robot Exhibition held in October 26-29, 1999, the prototype of ORiN was jointly demonstrated by each company. (NEDO)

  5. Quantum limit for two-dimensional resolution of two incoherent optical point sources

    CERN Document Server

    Ang, Shan Zheng; Tsang, Mankei

    2016-01-01

    We obtain the multiple-parameter quantum Cram\\'er-Rao bound for estimating the Cartesian components of the centroid and separation of two incoherent optical point sources using an imaging system with finite spatial bandwidth. Under quite general and realistic assumptions on the point-spread function of the imaging system, and for weak source strengths, we show that the Cram\\'er-Rao bounds for the x and y components of the separation are independent of the values of those components, which may be well-below the conventional Rayleigh resolution limit. We also propose two linear optics-based measurement methods that approach the quantum bound for the estimation of the Cartesian components of the separation once the centroid has been located. One of the methods is an interferometric scheme that approaches the quantum bound for sub-Rayleigh separations. The other method uses fiber coupling to attain the bound regardless of the distance between the two sources.

  6. Dicty_cDB: SSM635 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 23061 |BX323061.6 Mouse DNA sequence from clone RP24-267L10 on chromosome 11. 46 0.45 1 AW570934 |AW570934.1 ra13a02.y1 Bird... pieces. 44 1.8 1 AW571311 |AW571311.1 ra16g10.y2 Bird-Rao Meloidogyne incognita J2 Meloidogyne incognita cD...NA 5', mRNA sequence. 44 1.8 1 AW571255 |AW571255.1 ra16b04.y2 Bird-Rao Meloidogy...dogyne incognita egg pAMP1 Bird Meloidogyne incognita cDNA 5', mRNA sequence. 44 1.8 1 AC011836 |AC011836.3 ...ordered pieces. 44 1.8 1 BM880766 |BM880766.1 rb18a09.y1 Meloidogyne incognita egg pAMP1 Bird Meloidogyne in

  7. Dicty_cDB: SSB550 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 0, *** SEQUENCING IN PROGRESS ***, 4 unordered pieces. 48 0.087 1 BM774742 |BM774742.1 ra97b02.y1 Meloidogyne incognita egg pAMP1 Bir...d Meloidogyne incognita cDNA 5', mRNA sequence. 44 1.4 1 AW571255 |AW571255.1 ra16b04.y2 Bird...s. 44 1.4 1 AW570934 |AW570934.1 ra13a02.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne incognita cDNA 5',... mRNA sequence. 44 1.4 1 BM880766 |BM880766.1 rb18a09.y1 Meloidogyne incognita egg pAMP1 Bird Meloidogyne in...cognita cDNA 5', mRNA sequence. 44 1.4 1 AW570774 |AW570774.1 ra10g11.y1 Bird-Rao

  8. The causal link among militarization, economic growth, CO2 emission, and energy consumption.

    Science.gov (United States)

    Bildirici, Melike E

    2017-02-01

    This paper examines the long-run and the causal relationship among CO2 emissions, militarization, economic growth, and energy consumption for USA for the period 1960-2013. Using the bound test approach to cointegration, a short-run as well as a long-run relationship among the variables with a positive and a statistically significant relationship between CO2 emissions and militarization was found. To determine the causal link, MWALD and Rao's F tests were applied. According to Rao's F tests, the evidence of a unidirectional causality running from militarization to CO2 emissions, from energy consumption to CO2 emissions, and from militarization to energy consumption all without a feedback was found. Further, the results determined that 26% of the forecast-error variance of CO2 emissions was explained by the forecast error variance of militarization and 60% by energy consumption.

  9. The Main Results and the Perspectives in the Researches at SSRT

    Institute of Scientific and Technical Information of China (English)

    G. Y. Smolkov; S. V. Lesovoy; V. G. Zandanov; A. T. Altyntsev; A.V. Gubin

    2005-01-01

    In this report briefly presented the contemporary state of the experimental base of Radio Astrophysical Observatory (RAO) of the Institute of Solar-Terrestrial Physics (ISTP), the methodology of radioheliographic monitoring of the solar corona, the SSRT database, the RAO Web-pages, factors limiting the effective use of SSRT. Here are formulated the original results of the basic directions of the solar activity researches and the problems solutions on SSRT: (1) active regions at various development stages, morphology, modeling,signs of energy accumulation and flares buildup, forecast of powerful flares; (2) scenario, topology and the fine temporal picture of flares development, signs of primary energy release, radio emission mechanisms, scatter effects of radio emission in turbulent corona, energetic particles fluxes; (3) filaments; (4) CME with the localization of their initiation at the solar disk background, development scenario of filament activation + CME +flare; (5) coronal holes, and (6) bright coronal points.

  10. Adaptive phase estimation with squeezed thermal light

    DEFF Research Database (Denmark)

    Berni, A. A.; Madsen, Lars Skovgaard; Lassen, Mikael Østergaard

    2013-01-01

    Summary form only given. The use of quantum states of light in optical interferometry improves the precision in the estimation of a phase shift, paving the way for applications in quantum metrology, computation and cryptography. Sub-shot noise phase sensing can for example be achieved by injecting...... a squeezed vacuum into an interferometer . However, this approach leads to enhanced sensitivity only for small phase shifts. In this work we aim for ab initio sub-shot noise estimation of an unknown phase shift using a pre-determined squeezed probe and an adaptive measurement approach. We experimentally...... with the signal. A second estimation step leads to the final estimation of the phase shift. Thermalization of the probe state prevents the attainability of the quantum Cramér-Rao bound. Nevertheless, we show that the studied adaptive scheme still saturates the classical Cramér-Rao bound, showing sub-shot noise...

  11. Vertical and temporal variation in phytoplankton assemblages correlated with environmental conditions in the Mundaú reservoir, semi-arid northeastern Brazil

    Directory of Open Access Journals (Sweden)

    GAST LIRA

    Full Text Available The goal of this study was to analyse the vertical structure of the phytoplankton community at the Mundaú reservoir, located in the semi-arid region of northeastern Brazil, and to correlate it to environmental conditions over two distinct seasons, dry and rainy. Samples were collected bimonthly at eight depths in the dry and rainy season for analyses of the physical and chemical variables of the water, as well as density, abundance, dominance, species diversity index and equitability of the community. Analysis of variance (ANOVA-two way was used to analyse the vertical and seasonal differences, and Canonical Correspondence Analysis (CCA was used to assess associations between phytoplankton and environmental variables Cylindrospermopsis raciborskii (Woloszynska Seenaya and Subba Raju was the only dominant species and Geitlerinema amphibium (C. Agardh Anagnostidis, Merismopedia punctata Meyen and Synedra rumpens Kützing. Others six taxa were abundant in at least one of the samples. Distinct vertical distribution patterns were observed for the abundant taxa between depths and seasons. The cyanobacteria, with the exception of C. raciborskii, showed similar seasonal patterns, with higher densities in the dry season. The CCA showed a strong correlation between the density of the phytoplanktonic species and abiotic variables. The vertical changes in abundant taxa revealed distinct patterns regulated by the variation in the environmental factors that were directly linked to seasonality, with the success of one or more species being dependent on their life strategies and ecological needs. The present study restates the importance of environmental and seasonal factors for phytoplankton composition and distribution in a freshwater tropical reservoir through a vertical gradient.

  12. MIMO Radar - Diversity Means Superiority

    Science.gov (United States)

    2007-10-01

    denotes the transpose operator, and Diag(al, • • . a L, a block-diagonal matrix with a1 , , ap being its diagotial sttl)lli,1I vi(v lwl,l . can be...tor. As we will show via numerical examples, the inean-squarcd-crr()i . NIF ’) dI, I w estimate of iGLRT approaches the corresponding Crainr-Rao bound

  13. Outstanding student papers

    Science.gov (United States)

    Five presentations in the Hydrology Section were named Outstanding Student Papers at AGU's Spring Meeting in Baltimore, Md.Gwynn R. Johnson was honored for her presentation of “Solvent Rushing of an LNAPL Contaminated Soil.” She received her bachelor's degree in May 1993 and is now completing her master's degree (under the guidance of M.D. Annable, P.S.C. Rao, and K. Hatfield) in the Department of Environmental Engineering Sciences at the University of Florida.

  14. Fisher information, Borges operators, and q-calculus

    Science.gov (United States)

    Pennini, F.; Plastino, A.; Ferri, G. L.

    2008-10-01

    We discuss applying the increasingly popular q-calculus, or deformed calculus, so as to suitably generalize Fisher’s information measure and the Cramer-Rao inequality. A q-deformation can be attained in multiple ways, and we show that most of them do not constitute legitimate procedures. Within such a context, the only completely acceptable q-deformation is that ensuing from using the so-called Borges derivative [E.P. Borges, Physica A 340 (2004) 95].

  15. Performance Analysis of the Converted Range Rate and Position Linear Kalman Filter

    Science.gov (United States)

    2013-11-01

    method is shown to have improved mean square error performance and exhibits improved constancy over the previously proposed methods, especially in...the posterior Cramer-Rao lower bound (PCRLB). The new method is shown to have improved mean square error performance and exhibits improved constancy ...measurements for tracking,” IEEE Trans. on Aerospace and Electronic Systems., vol. 34(3), pp. 1023–1027, 1998. [16] M. Miller and O. Drummond, “Comparison

  16. Hybrid Lifting Wavelet-Like Transform for Solution of Electromagnetic Integral Equation

    Institute of Scientific and Technical Information of China (English)

    CHEN Ming-Sheng; WU Xian-Liang; SHA Wei; HUANG Zhi-Xiang

    2008-01-01

    @@ A hybrid lifting wavelet-like transform scheme is successfully applied to the solution of electric field integral equation using Rao-Wilton-Glisson basis functions.To speed up the matrix transform process,the lifting scheme is adopted.Numerical examples of different three-dimensional perfectly electric conducting objects are considered.Compared with the method of moments,the proposed matrix transform scheme can save considerable CPU time and memory.

  17. Theory, Design, and Measurement of Novel Uniform Circular Antenna Arrays for Direction of Arrival Estimation

    Science.gov (United States)

    2015-01-01

    the response of ideal dipoles in free-space are indicated by the dashed lines). . . . . . . . . . . 35 Figure 22: Dipole array simulated phase...differences relative to Antenna 1 (the response of ideal dipoles in free-space are indicated by the dashed lines...antenna elements themselves were assumed to be isotropic and V- shaped arrays were used). The Cramer- Rao Lower Bound (CRLB) is commonly used to

  18. Nonlinear Least Squares Methods for Joint DOA and Pitch Estimation

    DEFF Research Database (Denmark)

    Jensen, Jesper Rindom; Christensen, Mads Græsbøll; Jensen, Søren Holdt

    2013-01-01

    In this paper, we consider the problem of joint direction-of-arrival (DOA) and fundamental frequency estimation. Joint estimation enables robust estimation of these parameters in multi-source scenarios where separate estimators may fail. First, we derive the exact and asymptotic Cram\\'{e}r-Rao...... estimation. Moreover, simulations on real-life data indicate that the NLS and aNLS methods are applicable even when reverberation is present and the noise is not white Gaussian....

  19. Computationally Efficient and Noise Robust DOA and Pitch Estimation

    DEFF Research Database (Denmark)

    Karimian-Azari, Sam; Jensen, Jesper Rindom; Christensen, Mads Græsbøll

    2016-01-01

    a joint DOA and pitch estimator. In white Gaussian noise, we derive even more computationally efficient solutions which are designed using the narrowband power spectrum of the harmonics. Numerical results reveal the performance of the estimators in colored noise compared with the Cram\\'{e}r-Rao lower...... bound. Experiments on real-life signals indicate the applicability of the methods in practical low local signal-to-noise ratios....

  20. Neurobiology of Soman

    Science.gov (United States)

    1991-06-30

    which, in the brain, is produced exclusively by astrocytes ( Schwarcz et at,3 1989). Quinollnic acid (QUIN) first surfaced in relation to the brain when...based on Its structural properties, It was suggested that QUIN might be a neurotoxin. It is now established that QUIN Is a potent neurotoxin ( Schwarcz ...et at, 1989). QUIN Is a preferential NMDA receptor agonist ( Schwarcz et al., 1989). The synthetic (3-hydroxyanthroanthranlic oxidase; 3-RAO) and

  1. Aldo-keto reductase family 1 B10 affects fatty acid synthesis by regulating the stability of acetyl-CoA carboxylase-alpha in breast cancer cells.

    Science.gov (United States)

    Ma, Jun; Yan, Ruilan; Zu, Xuyu; Cheng, Ji-Ming; Rao, Krishna; Liao, Duan-Fang; Cao, Deliang

    2008-02-08

    Recent studies have demonstrated that aldo-keto reductase family 1 B10 (AKR1B10), a novel protein overexpressed in human hepatocellular carcinoma and non-small cell lung carcinoma, may facilitate cancer cell growth by detoxifying intracellular reactive carbonyls. This study presents a novel function of AKR1B10 in tumorigenic mammary epithelial cells (RAO-3), regulating fatty acid synthesis. In RAO-3 cells, Sephacryl-S 300 gel filtration and DEAE-Sepharose ion exchange chromatography demonstrated that AKR1B10 exists in two distinct forms, monomers (approximately 40 kDa) bound to DEAE-Sepharose column and protein complexes (approximately 300 kDa) remaining in flow-through. Co-immunoprecipitation with AKR1B10 antibody and protein mass spectrometry analysis identified that AKR1B10 associates with acetyl-CoA carboxylase-alpha (ACCA), a rate-limiting enzyme of de novo fatty acid synthesis. This association between AKR1B10 and ACCA proteins was further confirmed by co-immunoprecipitation with ACCA antibody and pulldown assays with recombinant AKR1B10 protein. Intracellular fluorescent studies showed that AKR1B10 and ACCA proteins co-localize in the cytoplasm of RAO-3 cells. More interestingly, small interfering RNA-mediated AKR1B10 knock down increased ACCA degradation through ubiquitination-proteasome pathway and resulted in >50% decrease of fatty acid synthesis in RAO-3 cells. These data suggest that AKR1B10 is a novel regulator of the biosynthesis of fatty acid, an essential component of the cell membrane, in breast cancer cells.

  2. Generalized Jacobi Elliptic Function Solution to a Class of Nonlinear Schrödinger-Type Equations

    Directory of Open Access Journals (Sweden)

    Zeid I. A. Al-Muhiameed

    2011-01-01

    Full Text Available With the help of the generalized Jacobi elliptic function, an improved Jacobi elliptic function method is used to construct exact traveling wave solutions of the nonlinear partial differential equations in a unified way. A class of nonlinear Schrödinger-type equations including the generalized Zakharov system, the Rangwala-Rao equation, and the Chen-Lee-Lin equation are investigated, and the exact solutions are derived with the aid of the homogenous balance principle.

  3. Thrombophilic screening in retinal artery occlusion patients

    Directory of Open Access Journals (Sweden)

    Valeria Nagy

    2008-10-01

    Full Text Available Valeria Nagy1, Lili Takacs1, Zita Steiber1, György Pfliegler2, Andras Berta11Department of Ophthalmology, 2Division of Rare Diseases, University of Debrecen Medical and Health Science Center, Debrecen, HungaryBackground: Retinal artery occlusion (RAO is an ischemic vascular damage of the retina, which frequently leads to sudden, mostly irreversible loss of vision. In this study, blood thrombophilic factors as well as cardiovascular risk factors were investigated for their relevance to this pathology. Thrombophilic risk factors so far not evaluated were included in the study.Patients and methods: 28 RAO patients and 81 matched control subjects were examined. From blood samples, protein C, protein S, antithrombinopathy, and factor V (Leiden mutation (FV, factor II gene polymorphism, factor VIII C level, plasminogen activity, lipoprotein(a and fibrinogen levels, hyperhomocysteinemia and presence of anticardiolipin – antiphospholipid antibodies were investigated. Possibly relevant pathologies such as diabetes mellitus, hypertension, and ischemic heart disease were also registered. Statistical analysis by logistic regression was performed with 95% confidence intervals.Results: In the group of patients with RAO only the incidence of hypertension (OR: 3.33, 95% CI: 1.30–9.70, p = 0.014 as an average risk factor showed significant difference, but thrombophilic factors such as hyperfibrinogenemia (OR: 2.9, 95% CI: 1.29–6.57, p = 0.010 and the presence of FV (Leiden mutation (OR: 3.9, 95% CI: 1.43–10.96, p = 0.008 increased the chances of developing this disease.Conclusions: Our results support the assumption that thrombophilia may contribute to the development of RAO besides vascular damage due to the presence of cardiovascular risk factors. Further studies are needed, however, to justify the possible use of secondary prophylaxis in form of anticoagulant/antiplatelet therapy.Keywords: retinal arterial occlusion, risk factors, thrombophilia

  4. A model of basement structure from magnetic anomalies of the Bombay High oil-field west of India

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, D.G.

    -122 111 Elsevier Science Publishers B.V., Amsterdam A model of basement structure from magnetic anomalies of the Bombay High Oil-Field west of India D. Gopala Rao National Institute of Oceanography, Dona Paula, Goa 403 004, India (Revision accepted....5 kin LOWER MIOCENE LIMESTONE REFLECTOR (FROM SEISMIC DATA) ~',r V,,- v • - ~'¥¥YYYVV . ..... \\[~~'vvwvwyvvvvWvvvv " ":" ":'wv ..... I"'T .... L CLAY/CLAYSTONE ~ OBSERVED MAGNETIC ANOMALIES SHALE ~ THEORETICAL MAOHETIC ANOMALIES LIMESTONE...

  5. Technical Reference Manual: NATO Planning Guide for the Estimation of Chemical, Biological, Radiological, and Nuclear (CBRN), Casualties, Allied Medical Publication-8(C)

    Science.gov (United States)

    2010-08-01

    Model of Infection, Pathology, and Bacterial Transcriptional Activity,” Proceedings of the National Academies of Science 102, no. 49 (December 2005...human response to plague is provided in Chapter 8. 65 A. R. Rao, Smallpox (Bombay, India: Kothari Book Depot, 1972). 39 3. Calculation of Dose...possible increased pigmentation ; 6 to 7 weeks post exposure: dry desquamation 15 – < 40 Immediate itching; 1 to 3 weeks post exposure: erythema, edema

  6. MURI: Adaptive Waveform Design for Full Spectral Dominance

    Science.gov (United States)

    2011-03-11

    response of a uniform linear array 3 ( ULA ) with BIC. We derived the maximum likelihood estimates (MLEs) of the DOAs and computed the Cramér-Rao bound (CRB...Elnour, 2006-2007 IEEE Antennas and Propagation Society Graduate Fellowship award. (Advisor: Danilo Erricolo) • Murat Akcakaya, Best Student Paper...Award (first place) at the 2010 Waveform Diversity & Design Conference. (Co-author: Arye Nehorai) • Murat Akcakaya, co-author, Best Student Paper

  7. On the Uniqueness of the Canonical Polyadic Decomposition of third-order tensors --- Part I: Basic Results and Uniqueness of One Factor Matrix

    OpenAIRE

    Domanov, Ignat; De Lathauwer, Lieven

    2013-01-01

    Canonical Polyadic Decomposition (CPD) of a higher-order tensor is decomposition in a minimal number of rank-1 tensors. We give an overview of existing results concerning uniqueness. We present new, relaxed, conditions that guarantee uniqueness of one factor matrix. These conditions involve Khatri-Rao products of compound matrices. We make links with existing results involving ranks and k-ranks of factor matrices. We give a shorter proof, based on properties of second compound matrices, of ex...

  8. Innovation Engine for Blog Spaces

    Science.gov (United States)

    2011-09-01

    microscop elec- tron ion ionic valenc quantum 8 year time live singl perform plai group rock featur member music album record song band releas tour...Wikipedia, Wikipedia, http://en.wikipedia.org/wiki/Wikipedia. [63] John Wright, Arvind Ganesh, Shankar Rao, and Yi Ma, Robust princi- pal component analysis...2009. [64] John Wright, Allen Y. Yang, Arvind Ganesh S. Shankar Sastry, and Yi Ma, Robust face recognition via sparse representation, PAMI, 2008. 196 [65

  9. Genesis of apatite in the phosphatized limestones of the western continental shelf of India

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, V.P.; Lamboy, M.

    , rods and dumb-bell-shaped apatite microparticles or their coalesced/aggregate forms or microbial filaments. These apatite microparticles resemble fossilized bacteria and are often adhered to clays. SEM-coupled with EDS shows that the phosphate... to fossilized bacterial communities referred by numerous workers, ever since the early work of Cayeux (1939). For example, ovoid and rod- shaped apatite microparticles were reported by O’Brien et al. (1981), Mullins and Rasch (1985), Rao and Nair (1988...

  10. Historical developments in marine geology and some aspects of fine-grained sediments along the continental margins of India and Bengal fan

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, V.P.

    Content-Type text/plain; charset=UTF-8 29 Historical developments in Marine Geology and some aspects of fine- grained sediments along the continental margins of India and Bengal Fan V. Purnachandra Rao National Institute of Oceanography.... The Andhra University, Waltair made pioneering investigations on the eastern continental margin of India in the early 1950s. However, the International Indian Ocean Expedition (IIOE: 1961-1965) is an important landmark in the history of development...

  11. Evaluation of significant sources influencing the variation of water quality of Kandla creek, Gulf of Katchchh, using PCA

    Digital Repository Service at National Institute of Oceanography (India)

    Dalal, S.G.; Shirodkar, P.V.; Jagtap, T.G.; Naik, B.G.; Rao, G.S.

    . Rao Received: 7 August 2008 / Accepted: 27 January 2009 / Published online: 27 March 2009 © Springer Science + Business Media B.V. 2009 Abstract To evaluate the significant sources con- tributing to water quality parameters, we used principal component... sensitive issue, as a wide variety of an- thropogenic waste is discharged into it. Sewage and municipal wastes, landfill drainage, pulp and paper industry, forestry operations, agricultural runoff, aquaculture and fish processing plants, etc. are some major...

  12. The cost implementation of adoption of e-commerce in SMES

    Institute of Scientific and Technical Information of China (English)

    朱书阳

    2009-01-01

    @@ 1.Introduction SMES are generally cnnsidered to be flexible to adapt to e-commerce.They are considered to be.a major component of all economies and are generally considered to be flexible,adaptive and innovative organizations(Rao et al,2003).E-commerce is introdueed to SMES and has a rapid growth of adoption.The open structure and low cost of using Internet provide a chance to communicate and collecting information conveniently to buyers and sellers.

  13. Angular Random Walk Estimation of a Time-Domain Switching Micromachined Gyroscope

    Science.gov (United States)

    2016-10-19

    11 R. Juhl. 2016. “CTSM-R - Continuous Time Stochastic Modelling for R.”Available online at http://ctsm.info/. Accessed April 17, 2016. 12 D. Lynch...on Instrumentation and Measurement, vol. 57, no. 1, pp. 140–149. 15 S. S. Rao. 2007. Vibration of Continuous Systems. John Wiley & Sons, Inc...7269 INITIAL DISTRIBUTION 84300 Library (1) 85300 Archive/Stock (1) 55250 P. Swanson (1) 71730 A. Sabater (1) Defense Technical Information

  14. Homodyne estimation of Gaussian quantum discord.

    Science.gov (United States)

    Blandino, Rémi; Genoni, Marco G; Etesse, Jean; Barbieri, Marco; Paris, Matteo G A; Grangier, Philippe; Tualle-Brouri, Rosa

    2012-11-02

    We address the experimental estimation of Gaussian quantum discord for a two-mode squeezed thermal state, and demonstrate a measurement scheme based on a pair of homodyne detectors assisted by Bayesian analysis, which provides nearly optimal estimation for small value of discord. In addition, though homodyne detection is not optimal for Gaussian discord, the noise ratio to the ultimate quantum limit, as dictated by the quantum Cramer-Rao bound, is limited to about 10 dB.

  15. Generalised Exponential Families and Associated Entropy Functions

    Directory of Open Access Journals (Sweden)

    Jan Naudts

    2008-07-01

    Full Text Available A generalised notion of exponential families is introduced. It is based on the variational principle, borrowed from statistical physics. It is shown that inequivalent generalised entropy functions lead to distinct generalised exponential families. The well-known result that the inequality of Cram´er and Rao becomes an equality in the case of an exponential family can be generalised. However, this requires the introduction of escort probabilities.

  16. Proceedings of Damping󈨝 Held in West Palm Beach, Florida on 8-10 February 1989. Volume 2. Pages FAA-1 through IBD-15)

    Science.gov (United States)

    1989-11-01

    increasing passive NED -a damping. In Figure 7c the maximum displacement amplitudes of the actuator masses are plotted versus the passive damping. The...Structural Joints Made of Graphite Epoxy Composite Material Mohan D. Rao Department of Mechanical Engineering-Engineering Mechanics Michigan...provided by the Army AATD for the ACAP MT&E Noise Evaluation Program and in particular for the input and guidance provided by Ned Chase at AATD - Ft

  17. Mechanisms Involved in Immunity to Malarial Parasites.

    Science.gov (United States)

    1980-07-01

    public release; distribution unlimited. The findings in this report are not to be construed as an official Department of the Army position unless so...of am tIo~) Unclassified Is^ O~~PCATIOION/0 RAO10ING W OSTW~u7IOn STATONT (.4 me A*w Approved for public release; distribution unlimited. 17...infectios of Woobaotezlum lomemurlum on P. chabsudl and Babesia mioroti infections The, folawine experiment was carried out in. collaboratien with Dr

  18. A Stem Cell-Seeded Nanofibrous Scaffold for Auditory Nerve Replacement

    Science.gov (United States)

    2014-10-01

    application is under development and will be submitted prior to any award. We estimate some time for modification of this protocol based on feedback from...neural growth in the implanted deafened ear. 8 Research opportunities applied for based on experience supported by this award Experience...derived neurons for inner ear therapy: InTech . Hester ME, Murtha MJ, Song S, Rao M, Miranda CJ, Meyer K, Tian J, Boulting G, Schaffer DV, Zhu MX

  19. Support for the Resident Research Associateship Program With the U.S. Army Medical Research and Materiel Command

    Science.gov (United States)

    2005-02-01

    Manuscripts in preparation, manuscripts submitted Identification of Ebola Virus Epitopes Recognized by CD8 + Cytotoxic T cells . G. G. Olinger, R. J...July 14-16 2003. Domestic Identification of Ebola Virus Epitopes recognized by CD8 + Cytotoxic T cells . G. G. Olinger, R. J. Hogan, M. A. Bailey, R...Gilmore, L., Gunther, V., Peachman, K.K., Rao, M., Barvir, D. Sun, W., and Palmer, D.R. (2004). Modulation of Dengue Virus Infection of Dendritic Cells by

  20. On Modeling Biomolecular-Surface Nonbonded Interactions: Application to Nucleobase Adsorption on Single-Wall Carbon Nanotube Surfaces

    Science.gov (United States)

    2012-01-01

    relative trend are indeed consistent with the trend in the experimentally determined ionization potentials of the NBs that were compiled by Roca -Sanjuán et...Maiti P K, Sood A K and Rao C N R 2009 ChemPhysChem 10 206–10 [33] Roca -Sanjuan D, Rubio M, Merchan M and Serrano-Andres L 2006 J. Chem. Phys. 125

  1. Simulation study of passive target motion analysis

    Institute of Scientific and Technical Information of China (English)

    HU Youfeng; JIAO Binli

    2003-01-01

    In this paper, the problem of underwater passive target motion analysis (TMA) in three dimensions is discussed using the measurements of passive bearings and elevation and frequency on the condition that acoustic source and observer are in different horizontal planes. Simulation results with both of the PLE (pseudo-linear estimation) and MLE (Maximum likelihood estimation) show that the TMA method is effective in oceanic environment. Its error covariance curves tend to its Cramer-Rao lower bounds.

  2. Phase sensitivity at the Heisenberg limit in an SU(1,1) interferometer via parity detection

    Science.gov (United States)

    Li, Dong; Gard, Bryan T.; Gao, Yang; Yuan, Chun-Hua; Zhang, Weiping; Lee, Hwang; Dowling, Jonathan P.

    2016-12-01

    We theoretically investigate the phase sensitivity with parity detection on an SU(1,1) interferometer with a coherent state combined with a squeezed vacuum state. This interferometer is formed with two parametric amplifiers for beam splitting and recombination instead of beam splitters. We show that the sensitivity of phase estimation approaches the Heisenberg limit and give the corresponding optimal condition. Moreover, we derive the quantum Cramér-Rao bound of the SU(1,1) interferometer.

  3. Preliminary report on antifertility effects of two buprofezin formulations on rice leaf folder(Cnaphalocrocis medinalis Guenée)

    Institute of Scientific and Technical Information of China (English)

    HUGuowen; CHENZhongxiao; LIHanqiong

    1993-01-01

    Buprofezin is a new insect chitin-synthesizer inhibitor for rice plant hoppers(Homoptera) and leaf-hoppers (Homoptera) control.Sreedhara Rao(1987) reported its antifertility effects on rice leaf folder (RLF,Lepidoptera).In this study,two buprofezin formulations,namely 25% Pu-shi-ling(wp) and 35% Shi-wen-ling(wp) with teo concentrations of 125mg/kg and 62.5mg/kg each,

  4. ACCURACY ANALYSIS OF PASSIVE LOCATION SYSTEM WITH PHASE DIFFERENCE RATE MEASUREMENT

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The conventional mono-station passive location techniques of direction finding are low in speed and accuracy, due to the little information available. In this paper, a novel measurement-rate (derivative) of phase difference from a two-element antenna array (interferometer) is introduced, accuracy of a passive location system with this measurement and directions of arrival (DOA) is analyzed, and the Cramer-Rao bound of location error of this system for 3D location is examined by simulations.

  5. Radio Frequency Emitter Geolocation Using Cubesats

    Science.gov (United States)

    2014-03-27

    35 2.5.1 Cramer Rao Lower Bound . . . . . . . . . . . . . . . . . . . . . . 35 2.5.2 Dilution of Precision ( DOP ...between sr and θ. 2.5.2 Dilution of Precision ( DOP ). An important factor to consider in geolocation accuracy is the geometry between the satellites and the...considered for the algorithms that are investigated in this research. The DOP is related to the CRLB [40]. If the estimator is efficient, then the

  6. Effects of Speech Intensity on the Callsign Acquisition Test (CAT) and Modified Rhyme Test (MRT) Presented in Noise

    Science.gov (United States)

    2012-01-01

    research and practice. One of the more recent English language SI tests is the Callsign Acquisition Test (CAT) developed by the United States Army...reliable scores (Rao, Letowski, 2006; Howes, 1957). The CAT combines two-syllable words based on the phonetic alphabet with one syllable numeric digits...were made at the U.S. Army Research Labora- tory by the same native English male talker speaking with a Midwestern accent. The listeners were familiar

  7. Prospects of Gravitational Wave Detection Using Pulsar Timing Array for Chinese Future Telescopes

    Science.gov (United States)

    Lee, K. J.

    2016-02-01

    In this paper, we estimate the sensitivity of gravitational wave (GW) detection for future Chinese pulsar timing array (PTA) projects. The calculation of sensitivity is based on the well-known Crámer-Rao bound idea. The red noise and dispersion measure (DM) variation noise has be included in the modeling. We demonstrate that the future Chinese telescope can be very valuable for future PTA experiments and GW detection efforts.

  8. Perspectives on the impact of stigma in leprosy: strategies to improve access to health care

    OpenAIRE

    Sundar Rao PSS

    2015-01-01

    Pamidipani SS Sundar Rao LEPRA India, Secunderabad, India Abstract: Throughout its history, leprosy has been much feared and misunderstood. Today, we have the best knowledge, expertise, therapies, and surgical and physiotherapeutic skills to virtually cure and eradicate the disease, but the continuing high levels of stigma pose insurmountable obstacles in our efforts to remove the scourges of leprosy. In this review, the medical, social, and political aspects related to the impact of stigma o...

  9. Ambiguity Function Analysis for UMTS-Based Passive Multistatic Radar

    Science.gov (United States)

    2014-04-16

    recently, in [15], the authors derived analytical ex- pressions for the monostatic and bistatic ambiguity functions using these UMTS downlink signals...Further, they computed the modified Cramer-Rao lower bound (CRB) for these systems. Conventional passive radar systems operate in a bistatic con...LIMITATION OF ABSTRACT Same as Report ( SAR ) 18. NUMBER OF PAGES 13 19a. NAME OF RESPONSIBLE PERSON a. REPORT unclassified b. ABSTRACT

  10. JPRS Report, Telecommunications.

    Science.gov (United States)

    2007-11-02

    broadcasting to some extent, "the impact may not be too serious as the loading of the satellite is to be done in a phased manner," said Prof. Rao...time," he said. Under the RRCSS project the village telephones will be controlled by a mini-exchange at the taluk, block or mandal headquarters...networking of all collaborative R&D activities in Europe and for creating market oppor- tunities for the information technology industry. Partic- ipants

  11. Distribution of Scientific Productivity and the Processes of Stratification

    OpenAIRE

    山崎, 博敏

    1982-01-01

    This paper reports that the distribution of productivity of 124 university chemists in Japan shows the best fittness to a negative binomial distribution, and then considers the reasons for and the sociological implications of the results. Since the inverse square law of A. J. Lotka (1926), several mathematical models on the distribution of productivity have been proposed by Williams (1944), Simon (1955), Shockley (1957), Price (1963, 1976), Allison (1976) and Rao (1980) et al. The charact...

  12. Generalized functional linear models for gene-based case-control association studies.

    Science.gov (United States)

    Fan, Ruzong; Wang, Yifan; Mills, James L; Carter, Tonia C; Lobach, Iryna; Wilson, Alexander F; Bailey-Wilson, Joan E; Weeks, Daniel E; Xiong, Momiao

    2014-11-01

    By using functional data analysis techniques, we developed generalized functional linear models for testing association between a dichotomous trait and multiple genetic variants in a genetic region while adjusting for covariates. Both fixed and mixed effect models are developed and compared. Extensive simulations show that Rao's efficient score tests of the fixed effect models are very conservative since they generate lower type I errors than nominal levels, and global tests of the mixed effect models generate accurate type I errors. Furthermore, we found that the Rao's efficient score test statistics of the fixed effect models have higher power than the sequence kernel association test (SKAT) and its optimal unified version (SKAT-O) in most cases when the causal variants are both rare and common. When the causal variants are all rare (i.e., minor allele frequencies less than 0.03), the Rao's efficient score test statistics and the global tests have similar or slightly lower power than SKAT and SKAT-O. In practice, it is not known whether rare variants or common variants in a gene region are disease related. All we can assume is that a combination of rare and common variants influences disease susceptibility. Thus, the improved performance of our models when the causal variants are both rare and common shows that the proposed models can be very useful in dissecting complex traits. We compare the performance of our methods with SKAT and SKAT-O on real neural tube defects and Hirschsprung's disease datasets. The Rao's efficient score test statistics and the global tests are more sensitive than SKAT and SKAT-O in the real data analysis. Our methods can be used in either gene-disease genome-wide/exome-wide association studies or candidate gene analyses.

  13. Performance assessment and signal processing for range-integrated concentration measurement of gas species using supercontinuum absorption spectroscopy.

    Science.gov (United States)

    Dobroc, Alexandre; Cézard, Nicolas

    2012-12-10

    In this paper, we propose signal-processing tools adapted to supercontinuum absorption spectroscopy, in order to predict the precision of gas species concentration estimation. These tools are based on Cramer-Rao bounds computations. A baseline-insensitive concentration estimation algorithm is proposed. These calculations are validated by statistical tests on simulated supercontinuum signals as well as experimental data using a near-infrared supercontinuum laser and a grating spectrometer.

  14. On Localization of A Non-Cooperative Target with Non-Coherent Binary Detectors

    Science.gov (United States)

    Shoari, Arian; Seyedi, Alireza

    2014-06-01

    Localization of a non-cooperative target with binary detectors is considered. A general expression for the Fisher information for estimation of target location and power is developed. This general expression is then used to derive closed-form approximations for the Cramer-Rao bound for the case of non-coherent detectors. Simulations show that the approximations are quite consistent with the exact bounds.

  15. Evaluation Codes from an Affine Veriety Code Perspective

    DEFF Research Database (Denmark)

    Geil, Hans Olav

    2008-01-01

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 4.2 Affine variety codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154 4.3 Some Gr¨obner basis theoretical tools . . . . . . . . . . . . . . . . . . . . . . . 155 4.4 A bound on the minimum distance of C(I,L) . . . . . . . . . . . . . . . . . . 157 4.5 The Feng-Rao bound...... for C(I,L)? . . . . . . . . . . . . . . . . . . . . . . . . 160 4.6 Using weighted degree orderings . . . . . . . . . . . . . . . . . . . . . . . . . 163 4.7 The order domain conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 168 4.8 Weight functions and order domains...

  16. A Linear Subspace Approach to Burst Communication Signal Processing

    Science.gov (United States)

    2006-05-31

    estimators, likelihood ra- tio detectors, and Cramér–Rao bounds, became a simple matter of calculation. This simple beginning then led to improved signal...is a vector, vector gradient formulas are applicable. The following are defined for real vectors, dr (or equivalently di). ∇drdTr x = x (237) ∇ drx †dr...Structural Characterization of Locally Optimum Detec- tors in Terms of Locally Optimum Estimators and Correlators,” IEEE Transac- tions on Information

  17. Towards well posed and robust image reconstruction in optical interferometry: redundant spacing calibration with generalized closure phases

    Science.gov (United States)

    2016-05-18

    scenario. The target selected was NASA’s Cloud-Aerosol Lidar and Infrared Pathfinder Satel- lite Observations (CALIPSO) satellite for which the truth image...architectures, and corroborate this analysis with simulation results showing performance near the Cramer-Rao bound. Lastly, we apply techniques from the field of...measurements corresponding to each pair of apertures. Collecting such measurements together, we obtain a system of equations: ~β = θ + Aφ (1) © 2016 The

  18. Conservative error measures for classical and quantum metrology

    CERN Document Server

    Tsang, Mankei

    2016-01-01

    The classical and quantum Cram\\'er-Rao bounds have become standard measures of parameter-estimation uncertainty for a variety of sensing and imaging applications in recent years, but their assumption of unbiased estimators potentially undermines their significance as fundamental limits. In this note we advocate a Bayesian approach with Van Trees inequalities and worst-case priors to overcome the problem. Applications to superlocalization and gravitational-wave parameter estimation are discussed.

  19. Diagnosis of Exposure to Chemical Warfare Agents: A Comprehensive Literature Survey 1990-2005

    Science.gov (United States)

    2006-01-01

    30S,02S," O2S, CH2 CH 2SCH3 CH 2CH2 SOCH 3 CH2 CH 2SCH 3 (2) (3) (10) Single stage GC-MS analysis, using positive ammonia CI and SIM of [M+NH 4]+, m...methodology, N7-HETE- Gua was detected in the spleen and liver of rats exposed percutaneously to sulfur mustard (Rao et al., 2002). b) Other physicochemical

  20. Dicty_cDB: SSM309 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available ary, BB17 Apis mellifera cDNA clone BB170024A20D04 5', mRNA sequence. 64 2e-12 3 AW570895 |AW570895.1 ra12e05.y1 Bird... 76 6e-10 1 AW588730 |AW588730.1 ra03h09.y2 Bird-Rao Meloidogyne incognita J2 Meloidogyne incognita cDNA 5'

  1. Nearest-neighbor Entropy Estimators with Weak Metrics

    CERN Document Server

    Timofeev, Evgeniy

    2012-01-01

    A problem of improving the accuracy of nonparametric entropy estimation for a stationary ergodic process is considered. New weak metrics are introduced and relations between metrics, measures, and entropy are discussed. Based on weak metrics, a new nearest-neighbor entropy estimator is constructed and has a parameter with which the estimator is optimized to reduce its bias. It is shown that estimator's variance is upper-bounded by a nearly optimal Cramer-Rao lower bound.

  2. Workshop on Smart Structures (1st) Held at The University of Texas at Arlington on September 22-24 1993. Collection of Extended Abstracts

    Science.gov (United States)

    1994-06-01

    34 Electrorheological Material Based Adaptive Structures Incorporating In-Situ Sensing Neural Network Real Time Control* Vittal Rao, Rajendra Damle, Chris...and Optimization of Composite and Sandwich Panels Using Piezoelectric Stiffeners- Actuators " Z. Chaudhry, T. Ganino and Craig A. Rogers, Virginia...Memory Alloy Actuators Embedded in Composite Beams’ H. James Pfaeffie, Dimitris C. Lagoudas and Kevin C. Craig Rensselaer Polytechnic Institute "Active

  3. The Political Economy of India’s Economic Reforms: Three Periods from 1947-2016

    Science.gov (United States)

    2016-06-01

    1992–2015 The 1991 liberal economic reforms enacted by then Prime Minister Narasimha Rao and his finance minister , Manmohan Singh, produced very quick...Foreign Direct Investment GDP Gross Domestic Product IFI International Financial Institutions IMF International Monetary Fund INC Indian National...economic policy was largely influenced by its first Prime Minister , Jawaharlal Nehru.26 Having been witness to British colonial exploitation, Nehru

  4. Hand Gesture Data Collection Procedure Using a Myo Armband for Machine Learning

    Science.gov (United States)

    2015-09-01

    Data Collection Procedure Using a Myo Armband for Machine Learning by Michael Lee and Nikhil Rao Computational and Information Sciences...Hand Gesture Data Collection Procedure Using a Myo Armband for Machine Learning 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER...Battlefield Information Processing Branch investigated using machine learning (ML) to identify military hand gestures. A Naïve Bayes model was

  5. A Finite Point Process Approach to Multi-Target Localization

    Science.gov (United States)

    2013-09-01

    problem for streaming data is presented by Garcia- Fernandez et al. (13). The multi-target simultaneous localization and mapping (MSLAM) scheme is...IEEE 2004, 19 (1), 5-18. 7. Vermaak, J.; Godsill, S.; Perez , P. Monte Carlo filtering for multi target tracking and data association. Aerospace and...Cramer-Rao bound for tracking in clutter and tracking multiple objects. Pattern Recognition Letters 1997, 18 (3), 283 - 288. 13. Garcia- Fernandez , A

  6. Hormonal Resistance and Metastasis: ER-coregulator-Src Targeted Therapy

    Science.gov (United States)

    2009-09-01

    1. Dimple Chakravarty, Sujit Nair, Binoj Chandrasekhar Nair, Long Wang , Abhik Bandyopadhyay, Joseph K. Agyin, Frank Lee, Lu- Zhe Sun, I-Tien Yeh...Poster Board Number: 11 Author Block: Dimple Chakravarty, Sujit Nair, Binoj Chandrasekhar Nair, Long Wang , Abhik Bandyopadhyay, Joseph K. Agyin, Frank...Lee, Lu- Zhe Sun, I-Tien Yeh, Rajeshwar Rao Tekmal, Ratna K. Vadlamudi. UT Health Science Ctr., San Antonio, TX, Bristol-Myers Squibb Pharmaceutical

  7. Cooperative Navigation and Coverage Identification with Random Gossip and Sensor Fusion

    OpenAIRE

    2016-01-01

    This paper is concerned with cooperative Terrain Aided Navigation of a network of aircraft using fusion of Radar Altimeter and inter-node range measurements. State inference is performed using a Rao-Blackwellized Particle Filter with online measurement noise statistics estimation. For terrain coverage measurement noise parameter identification, an online Expectation Maximization algorithm is proposed, where local sufficient statistics at each node are calculated in the E-step, which are then ...

  8. List of Scientific Publication in Foreign Languages in 2013

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    1 Abstracts of Papers of the American Chemical Society,Vol.245,20131)Cation-cation interaction between Np(Ⅴ)and U(Ⅵ)and its effect on the behavior of Np(Ⅴ)in solvent extraction and disproportionation,143-NUCL.RAO Lin-feng(Univ Calif Berkeley,Lawrence Berkeley Natl Lab,Berkeley,CA 94720 USA),XIAN Liang,ZHENG Wei-fang,et al

  9. Monitored Natural Attenuation of Perchlorate in Groundwater

    Science.gov (United States)

    2010-09-01

    Center ORP oxidation-reduction potential P&T pump-and-treat pcrA perchlorate reductase RAO remedial action objective SCM site conceptual... SCM ) should be formulated and then calibrated against local data. Physical conditions of the aquifer, groundwater flow characteristics (e.g., flow...8 disadvantage . Flushing and dilution can reduce concentrations rapidly, but solubility can result in extended plumes with low concentrations that

  10. A meta-frontier approach for causal inference in productivity analysis

    DEFF Research Database (Denmark)

    Henningsen, Arne; Mpeta, Daniel F.; Adem, Anwar S.

    use the approach of Bravo-Ureta, Greene and Solís (2012) to estimate two separate production frontiers (one for contract farmers and one for non-contract farmers) that account for potential biases due to self-selection on both observed and unobserved variables. Then, we follow Rao, Brümmer and Qaim...... by the contractor’s provision of (additional) extension service and seeds of high-yielding varieties to the contract farmers....

  11. Current status and scope of coral reef research in India: A bio-ecological perspective

    Digital Repository Service at National Institute of Oceanography (India)

    De, K.; Venkataraman, K.; Ingole, B.S.

    -ECOLOGICAL PERSPECTIVE Ravindran et al., 2012 Wilson et al., 2005 Kumaraguru et al., 2005 Kumaraguru et al., 2003 Manikandan et al., 2016 Thinesh et al., 2015 Joshi & Marimuthu, 2015 Pereira &Verlecar. 2005 Kamalakannan et al., 2014..., 2011 Dhivya et al., 2012 Coral bleaching and other threats Jeyabaskaran & Rao, 2007 Krishnan et al., 2011 Marimuthu et al., 2013 Jha et al., 2013 Jogesh Kumar & Raghunathan, 2012 Marimuthu et al., 2011 Marimuthu & Wilson, 2005...

  12. Multiple Integrated Navigation Sensors for Improved Occupancy Grid FastSLAM

    Science.gov (United States)

    2011-03-01

    Robotics and Automation, 17(3):229–241, 2001. [17] Doucet, Arnaud, Nando de Freitas, Kevin Murphy, and Stuart Russell . “Rao- Blackwellised Particle...Austin and Ronald Parr . “DP-SLAM: Fast, Robust Simultaneous Local- ization and Mapping without Predetermined Landmarks”. International Joint Conference...on Artificial Intelligence, 1135–1142. 2003. [21] Eliazar, Austin and Ronald Parr . “Hierarchical Linear/Constant Time SLAM Using Particle Filters for

  13. Exact solutions to a class of nonlinear Schrödinger-type equations

    Indian Academy of Sciences (India)

    Jin-Liang Zhang; Ming-Liang Wing

    2006-12-01

    A class of nonlinear Schrödinger-type equations, including the Rangwala–Rao equation, the Gerdjikov–Ivanov equation, the Chen–Lee–Lin equation and the Ablowitz–Ramani–Segur equation are investigated, and the exact solutions are derived with the aid of the homogeneous balance principle, and a set of subsidiary higher order ordinary differential equations (sub-ODEs for short).

  14. Effects of bottom water dissolved oxygen variability on copper and lead fractionation in the sediments across the oxygen minimum zone, western continental margin of India

    Digital Repository Service at National Institute of Oceanography (India)

    Chakraborty, P.; Chakraborty, S.; Jayachandran, S.; Madan, R.; Sarkar, Arindam; Linsy, P.; Nath, B.N.

    , Worcestershire, UK.). The detailed procedure has been described in the literature by Ramaswamy and Rao (2006). The sand data is presented in weight percentage (wt %) and the silt and clay in vol (%) in this study. Total inorganic carbon (TIC), total nitrogen... (TN) and total sedimentary organic carbon (TOC) The surface sediment samples were analyzed for total carbon (TC), total inorganic carbon (TIC), and total nitrogen (TN) contents in the sediments. The TC and TN contents in sediments were determined...

  15. Geochemical fractionation of Ni, Cu and Pb in the deep sea sediments from the Central Indian Ocean Basin: An insight into the mechanism of metal enrichment in sediment

    Digital Repository Service at National Institute of Oceanography (India)

    Sensarma, S.; Chakraborty, P.; Banerjee, R.; Mukhopadhyay, S.

    microns). The procedure has been vividly described by Ramaswamy and Rao (2006). 2.3. Total carbon (TC), inorganic carbon (TIC) and organic carbon (TOC) analysis: The total carbon (TC) content of the studied sediment samples were analyzed in a carbon... and nitrogen elemental analyzer (Thermo Scientific Flash-EA 1112). Precision of the analysis was within ±5%. Total inorganic carbon (TIC) content of the sediments was determined by Coulometer (UIC, Inc-CM5130 acidification module). Analytical grade calcium...

  16. Dim Object Detection and Characterization Through Multi-frame Imaging

    Science.gov (United States)

    2011-04-05

    Rao Gudimetla (Air Force Research Laboratory) Effort sponsored by the Air Force Office of Scientific Research, Air Force Material Command, USAF...Telling Planets from Speckles Created by ELT Segmentation, Proceedings of SPIE, Volume 7733, 773351-1, 2010 Gladysz, S., Martinez, P., Aller...OSA 2011 All publications contain the following text: Effort sponsored by the Air Force Office of Scientific Research, Air Force Material Command

  17. A study on the characteristics of temperature inversions in active and break phases of Indian summer monsoon

    Digital Repository Service at National Institute of Oceanography (India)

    Muraleedharan, P.M.; Mohankumar, K.; Sivakumar, K.U.

    summer monsoon (Yasunari, 1980; Sikka and Gadgil, 1980; Krishnamurti and Subramanyam, 1982). Webster et al. (1998) mentioned that the individual active and break spells and the transition between the spells are far more complex to understand. Rao et.... Tomas, M. Yanai and T. Yasunari (1998). Monsoons: Processes, predictability and the prospects for prediction. J. Geophys. Res., 103 (C7), 14,451-14,510. Yasunari, T (1980). A quasi stationary appearance of the 30-40 day period in the cloudiness...

  18. Evidence for Indo-Roman trade from Bet Dwarka waters, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.; Sundaresh; Tripati, S.

    and the Mediterranean Sea suggest that the artifacts from Bet Dwarka may be datable to Ist century BC to 2nd century AD. The numbers of stone anchors suggest that this was an ancient anchoring point. Keywords: Marine Archaeology, Shipwreck, Indo... Island. The important findings include a late Harappan seal made on conch shell (Rao, 1988), besides a large number of pottery dating back to the Harappan and historical periods (Gaur, et al, 1994). A large number of archaeological artifacts...

  19. Indecomposable representations of the Lie algebra of derivations for d-torus

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    Let DerA be the Lie algebra of derivations of the d-torus A = C[t1± 1, . . . , td±1]. By applying Shen-Larsson’s functors we get a class of indecomposable DerA-modules from finite-dimensional indecomposable gld-modules. We also give a complete description of the submodules of these indecomposable DerA-modules. Our results generalize those obtained by Rao.

  20. Naval War College Review. Volume 59, Number 2, Spring 2006

    Science.gov (United States)

    2006-01-01

    also Rahul Roy-Chaudhury, “Maritime and Naval Dimensions of India’s Security,” in India and the IO in the Twilight of the Millennium, ed. P. V. Rao (New...Autumn 2005), pp. 42–43, 46. 34. For the saga of China and aircraft carrier ac- quisition, see Ian Storey and You Ji, “China’s Aircraft Carrier

  1. Thermodynamics and thermal decomposition for shape memory effects with crystallization based on dissipation and logarithmic strain

    Science.gov (United States)

    Hall, R. B.; Rao, I. J.; Qi, H. J.

    2014-05-01

    The present effort provides a 3-D thermodynamic framework generalizing the 1-D modeling of 2-way shape memory materials described by Westbrook et al. (J. Eng. Mater. Technol. 312:041010, 2010) and Chung et al. (Macromolecules 41:184-192, 2008), while extending the strain-induced crystallization and shape memory approaches of Rao and Rajagopal (Interfaces Free Bound. 2:73-94, 2000; Int. J. Solids Struct. 38:1149-1167, 2001), Barot and Rao (Z. Angew. Math. Phys. 57:652-681, 2006), and Barot et al. (Int. J. Eng. Sci. 46:325-351, 2008) to include finite thermal expansion within a logarithmic strain basis. The free energy of newly-formed orthotropic crystallites is assumed additive, with no strains in their respective configurations of formation. A multiplicative decomposition is assumed for the assumed thermoelastic orthotropic expansional strains of the respective crystallites. The properties of the crystallites are allowed to depend both on current temperature and their respective temperatures of formation. The entropy production rate relation is written in the frame rotating with the logarithmic spin and produces stress and entropy relations incorporating the integrated configurational free energies, and a driving term for the crystallization analogous to that obtained by the previous studies of Rao et al. The salient attributes of the 1-D modeling of Westbrook et al. are recovered, and applications are discussed.

  2. Performance analysis of the Least-Squares estimator in Astrometry

    CERN Document Server

    Lobos, Rodrigo A; Mendez, Rene A; Orchard, Marcos

    2015-01-01

    We characterize the performance of the widely-used least-squares estimator in astrometry in terms of a comparison with the Cramer-Rao lower variance bound. In this inference context the performance of the least-squares estimator does not offer a closed-form expression, but a new result is presented (Theorem 1) where both the bias and the mean-square-error of the least-squares estimator are bounded and approximated analytically, in the latter case in terms of a nominal value and an interval around it. From the predicted nominal value we analyze how efficient is the least-squares estimator in comparison with the minimum variance Cramer-Rao bound. Based on our results, we show that, for the high signal-to-noise ratio regime, the performance of the least-squares estimator is significantly poorer than the Cramer-Rao bound, and we characterize this gap analytically. On the positive side, we show that for the challenging low signal-to-noise regime (attributed to either a weak astronomical signal or a noise-dominated...

  3. Analisa Greenwater Akibat Gerakan Offshore Security Vessel

    Directory of Open Access Journals (Sweden)

    Maulidya Octaviani Bustamin

    2012-09-01

    Full Text Available Analisa  Tugas  Akhir  ini,  terdiri  atas  beberapa  tahapan.  Yang pertama yaitu perancangan struktur Offshore Security Vessel (OSV dengan bantuan software MAXSURF guna mendapatkan Lines Plan. Offset data yang diperoleh digunakan dalam pemodelan menggunakan MOSES,  kemudian  dilakukan  analisa  gerak  OSV  dalam  gelombang  regular  dan dinyatakan dalam grafik RAO. Analisa gerak relatif vertikal  haluan dihitung dari RAO gerakan, dan kemudian melakukan evaluasi perilaku di gelombang acak dengan analisis spektra gelombang. Dari analisa spektra didapatkan parameter greenwater sehingga dapat dihitung peluang, intensitas dan tekanan greenwater. Dari hasil analisa diperoleh RAO gerak vertikal Offshore Security Vessel (OSV pada  gelombang  reguler yang dipengaruhi  oleh  kecepatan,  kondisi  muatan  dan arah gelombang. Peluang terjadinya greenwater terbesar terjadi pada sudut datang gelombang following sea (0o dimana harga terbesar terjadi pada ω = 0.2 rad/sec dengan periode 29 detik mencapai 0.477. Intensitas greenwater terbesar terjadi pada saat sudut datang gelombang following sea (0o adalah sebanyak 59.265 per jam dan 0.378 per detik. Tekanan greenwater terbesar terjadi pada saat sudut datang gelombang head sea (180o sebesar 1678x10-6 MPa. Dengan nilai tersebut, deck mampu menahan beban akibat tekanan greenwater.

  4. A review of the lunar laser ranging technique and contribution of timing systems

    Directory of Open Access Journals (Sweden)

    Cilence Munghemezulu

    2016-03-01

    Full Text Available The lunar laser ranging (LLR technique is based on the two-way time-of-flight of laser pulses from an earth station to the retroreflectors that are located on the surface of the moon. We discuss the ranging technique and contribution of the timing systems and its significance in light of the new LLR station currently under development by the Hartebeesthoek Radio Astronomy Observatory (HartRAO. Firstly, developing the LLR station at HartRAO is an initiative that will improve the current geometrical network of the LLR stations which are presently concentrated in the northern hemisphere. Secondly, data products derived from the LLR experiments � such as accurate lunar orbit, tests of the general relativity theory, earth-moon dynamics, interior structure of the moon, reference frames, and station position and velocities � are important in better understanding the earth-moon system. We highlight factors affecting the measured range bias such as the effect of earth tides on station position and delays induced by timing systems, as these must be taken into account during the development of the LLR analysis software. HartRAO is collocated with other fundamental space geodetic techniques which makes it a true fiducial geodetic site in the southern hemisphere and a central point for further development of space-based techniques in Africa. Furthermore, the new LLR will complement the existing techniques by providing new niche areas of research both in Africa and internationally.

  5. Application of the Most Likely Extreme Response Method for Wave Energy Converters: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Quon, Eliot; Platt, Andrew; Yu, Yi-Hsiang; Lawson, Michael

    2016-07-01

    Extreme loads are often a key cost driver for wave energy converters (WECs). As an alternative to exhaustive Monte Carlo or long-term simulations, the most likely extreme response (MLER) method allows mid- and high-fidelity simulations to be used more efficiently in evaluating WEC response to events at the edges of the design envelope, and is therefore applicable to system design analysis. The study discussed in this paper applies the MLER method to investigate the maximum heave, pitch, and surge force of a point absorber WEC. Most likely extreme waves were obtained from a set of wave statistics data based on spectral analysis and the response amplitude operators (RAOs) of the floating body; the RAOs were computed from a simple radiation-and-diffraction-theory-based numerical model. A weakly nonlinear numerical method and a computational fluid dynamics (CFD) method were then applied to compute the short-term response to the MLER wave. Effects of nonlinear wave and floating body interaction on the WEC under the anticipated 100-year waves were examined by comparing the results from the linearly superimposed RAOs, the weakly nonlinear model, and CFD simulations. Overall, the MLER method was successfully applied. In particular, when coupled to a high-fidelity CFD analysis, the nonlinear fluid dynamics can be readily captured.

  6. Macromolecular Design Strategies for Preventing Active-Material Crossover in Non-Aqueous All-Organic Redox-Flow Batteries.

    Science.gov (United States)

    Doris, Sean E; Ward, Ashleigh L; Baskin, Artem; Frischmann, Peter D; Gavvalapalli, Nagarjuna; Chénard, Etienne; Sevov, Christo S; Prendergast, David; Moore, Jeffrey S; Helms, Brett A

    2017-02-01

    Intermittent energy sources, including solar and wind, require scalable, low-cost, multi-hour energy storage solutions in order to be effectively incorporated into the grid. All-Organic non-aqueous redox-flow batteries offer a solution, but suffer from rapid capacity fade and low Coulombic efficiency due to the high permeability of redox-active species across the battery's membrane. Here we show that active-species crossover is arrested by scaling the membrane's pore size to molecular dimensions and in turn increasing the size of the active material above the membrane's pore-size exclusion limit. When oligomeric redox-active organics (RAOs) were paired with microporous polymer membranes, the rate of active-material crossover was reduced more than 9000-fold compared to traditional separators at minimal cost to ionic conductivity. This corresponds to an absolute rate of RAO crossover of less than 3 μmol cm(-2)  day(-1) (for a 1.0 m concentration gradient), which exceeds performance targets recently set forth by the battery industry. This strategy was generalizable to both high and low-potential RAOs in a variety of non-aqueous electrolytes, highlighting the versatility of macromolecular design in implementing next-generation redox-flow batteries. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  7. The biomechanical differences of rotational acetabular osteotomy, Chiari osteotomy and shelf procedure in developmental dysplasia of hip

    Science.gov (United States)

    2014-01-01

    Background Rotational acetabular osteotomy (RAO), Chiari osteotomy and shelf procedure are important treatments to delay the progression of osteoarthritis in developmental dysplasia of hip (DDH) patients, but their biomechanical differences are still unknown. This study was to evaluate the different biomechanical changes of hip joint after these three surgeries. Methods Sixteen DDH models of 8 human cadaver specimens were reconstructed, and treated by different surgeries, and then strain around femoral head was evaluated by strain gauges. Results Hip strain value of DDH model was decreased after treated by shelf procedure (Pleft = 0.016 and Pright = 0.021) and rotational acetabular osteotomy (P = 0.004), but not in Chiari osteotomy (P = 0.856). Moreover, the improved ratio of RAO treatment was better than shelf procedure (P = 0.015) and Chiari osteotomy (P = 0.0007), and the descendent range of shelf procedure was greater than Chiari osteotomy (P = 0.018). Conclusions From biomechanics points, RAO was more effective in relieving hip joint stress compared with shelf procedure and Chiari osteotomy. PMID:24555880

  8. Evaluation of exposure dose to patients undergoing catheter ablation procedures - a phantom study

    Energy Technology Data Exchange (ETDEWEB)

    Seguchi, S. [Nagoya University, Graduate School of Medicine, Nagoya (Japan); Nagoya Daini Red Cross Hospital, Division of Radiology, Department of Medical Technology, Nagoya (Japan); Aoyama, T.; Koyama, S.; Kawaura, C. [Nagoya University, Graduate School of Medicine, Nagoya (Japan); Fujii, K. [Nagoya University, Graduate School of Medicine, Nagoya (Japan); National Institute of Radiological Sciences, Section of Radiological Protection, Chiba (Japan)

    2008-11-15

    The aim of this study was to evaluate entrance skin dose (ESD), organ dose and effective dose to patients undergoing catheter ablation for cardiac arrhythmias, based on the dosimetry in an anthropomorphic phantom. ESD values associated with mean fluoroscopy time and digital cine frames were in a range of 0.12-0.30 Gy in right anterior oblique (RAO) and 0.05-0.40 Gy in left anterior oblique (LAO) projection, the values which were less than a threshold dose of 2 Gy for the onset of skin injury. Organs that received high doses in ablation procedures were lung, followed by bone surface, esophagus, liver and red bone marrow. Doses for lung were 24.8-122.7 mGy, and effective doses were 7.9-34.8 mSv for mean fluoroscopy time of 23.4-92.3 min and digital cine frames of 263-511. Conversion coefficients of dose-area product (DAP) to ESD were 8.7 mGy/(Gy.cm{sup 2}) in RAO and 7.4 mGy/(Gy.cm{sup 2}) in LAO projection. The coefficients of DAP to the effective dose were 0.37 mSv/(Gy.cm{sup 2}) in RAO, and 0.41 mSv/(Gy.cm{sup 2}) in LAO projection. These coefficients enabled us to estimate patient exposure in real time by using monitored values of DAP. (orig.)

  9. Application of the Most Likely Extreme Response Method for Wave Energy Converters

    Energy Technology Data Exchange (ETDEWEB)

    Quon, Eliot; Platt, Andrew; Yu, Yi-Hsiang; Lawson, Michael

    2016-06-24

    Extreme loads are often a key cost driver for wave energy converters (WECs). As an alternative to exhaustive Monte Carlo or long-term simulations, the most likely extreme response (MLER) method allows mid- and high-fidelity simulations to be used more efficiently in evaluating WEC response to events at the edges of the design envelope, and is therefore applicable to system design analysis. The study discussed in this paper applies the MLER method to investigate the maximum heave, pitch, and surge force of a point absorber WEC. Most likely extreme waves were obtained from a set of wave statistics data based on spectral analysis and the response amplitude operators (RAOs) of the floating body; the RAOs were computed from a simple radiation-and-diffraction-theory-based numerical model. A weakly nonlinear numerical method and a computational fluid dynamics (CFD) method were then applied to compute the short-term response to the MLER wave. Effects of nonlinear wave and floating body interaction on the WEC under the anticipated 100-year waves were examined by comparing the results from the linearly superimposed RAOs, the weakly nonlinear model, and CFD simulations. Overall, the MLER method was successfully applied. In particular, when coupled to a high-fidelity CFD analysis, the nonlinear fluid dynamics can be readily captured.

  10. Mathematical Modelling of Response Amplitude Operator for Roll Motion of a Floating Body:Analysis in Frequency Domain with Numerical Validation

    Institute of Scientific and Technical Information of China (English)

    Samir K.Das; Masoud Baghfalaki

    2014-01-01

    This paper investigates mathematical modelling of response amplitude operator (RAO) or transfer function using the frequency-based analysis for uncoupled roll motion of a floating body under the influence of small amplitude regular waves. The hydrodynamic coefficients are computed using strip theory formulation by integrating over the length of the floating body. Considering sinusoidal wave with frequency (ω ) varying between 0.3 rad/s and 1.2 rad/s acts on beam to the floating body for zero forward speed, analytical expressions of RAO in frequency domain is obtained. Using the normalization procedure and frequency based analysis, group based classifications are obtained and accordingly governing equations are formulated for each case. After applying the fourth order Runge-Kutta method numerical solutions are obtained and relative importance of the hydrodynamic coefficients is analyzed. To illustrate the roll amplitude effects numerical experiments have been carried out for a Panamax container ship under the action of sinusoidal wave with a fixed wave height. The effect of viscous damping on RAO is evaluated and the model is validated using convergence, consistency and stability analysis. This modelling approach could be useful to model floating body dynamics for higher degrees of freedom and to validate the result.

  11. Explicit formula for the Holevo bound for two-parameter qubit-state estimation problem

    Science.gov (United States)

    Suzuki, Jun

    2016-04-01

    The main contribution of this paper is to derive an explicit expression for the fundamental precision bound, the Holevo bound, for estimating any two-parameter family of qubit mixed-states in terms of quantum versions of Fisher information. The obtained formula depends solely on the symmetric logarithmic derivative (SLD), the right logarithmic derivative (RLD) Fisher information, and a given weight matrix. This result immediately provides necessary and sufficient conditions for the following two important classes of quantum statistical models; the Holevo bound coincides with the SLD Cramér-Rao bound and it does with the RLD Cramér-Rao bound. One of the important results of this paper is that a general model other than these two special cases exhibits an unexpected property: the structure of the Holevo bound changes smoothly when the weight matrix varies. In particular, it always coincides with the RLD Cramér-Rao bound for a certain choice of the weight matrix. Several examples illustrate these findings.

  12. Retinal vascular occlusion: a window to diagnosis of familial and acquired thrombophilia and hypofibrinolysis, with important ramifications for pregnancy outcomes

    Directory of Open Access Journals (Sweden)

    Dixon SG

    2016-08-01

    Full Text Available Stephan G Dixon,1 Carl T Bruce,1 Charles J Glueck,1 Robert A Sisk,2,3 Robert K Hutchins,2,3 Vybhav Jetty,1 Ping Wang1 1Cholesterol, Metabolism, and Thrombosis Center, Jewish Hospital of Cincinnati, 2Cincinnati Eye Institute, 3Department of Ophthalmology, University of Cincinnati College of Medicine, Cincinnati, OH, USA Aim: Our specific aim was to document the pathoetiologic importance of thrombophilia among females presenting with severe ischemic retinal vein (RVO or retinal artery (RAO occlusion, without typical risk factors, and to emphasize that the ophthalmologists’ diagnosis of thrombophilia has important diagnostic and therapeutic downstream ramifications for nonocular thrombosis, including reproductive outcomes. Methods: We evaluated familial and acquired thrombophilia in 60 females with RVO (central RVO, n=52; branch RVO, n=8 and 16 with RAO (central RAO, n=11; branch RAO, n=5. They were referred by retinologists, without typical risk factors for RVO/RAO and/or severe ocular ischemic presentation. We focused on extraocular thrombotic events, particularly pregnancy complications, including unexplained spontaneous abortion, pre-eclampsia–eclampsia. Thrombophilia measurements in the 76 females were compared with 62 healthy normal females without ocular vascular occlusions (OVOs. Results: The 76 females with OVO were more likely than 62 normal female controls to have high homocysteine (24% vs 0%, P<0.0001, high anticardiolipin antibody (immunoglobulin M, 17% vs 3%, P=0.012, high (>150% factor VIII (42% vs 11%, P<0.0001, and high (>150% factor XI (22% vs 4%, P=0.004. Of the 76 females, 26 (34% had ≥1 spontaneous abortion; 17 (22% had ≥2 spontaneous abortions and/or pre-eclampsia–eclampsia. Compared to 62 healthy female controls, these 17 females with pregnancy complications had high homocysteine (29% vs 0%, P=0.0003, high anticardiolipin antibody immunoglobulin M (24% vs 3%, P=0.02, high factor VIII (38% vs 11%, P=0.02, and were

  13. Aplikasi Penginderan Jauh dan Sig Untuk Penetapan Tingkat Kemampuan Penggunaan Lahan (KPL (Studi Kasus di DAS Nawagaon Maskara, Saharanpur-India

    Directory of Open Access Journals (Sweden)

    Beny Harjadi

    2016-05-01

    Full Text Available The land that was increasingly crowded resulting from the inhabitants’s speeding-up pressure, required the utilisation of the land to be as efficient and as effectively as possible. For this matter must be known by the LUC (Land Use Capability class respectively the unit of the land management, so as to be known as early as possible the obstacle factor from the land and could be done by the utilisation of the land as optimally as possible. The implementation of the LUC determination must be carried out a stage for the sake of a stage by counting LUC respectively the main factor, so as to be received by LUC-Soil, LUC-Erosion, and LUC-Slope. The next one of the three of this LUC were just counted by the value of the maximum to appoint LUC Final. LUC-Slope by being based on the Wischmeier and Smith (1978, LUC-Erosion was counted by using the quantitative MMF erosion formula (Morgan, Morgan, and Finney, and LUC-Soil by gathering the physical data the field took the form of the texture data of the land, drainage, solum and the percentage of the rock in the surface. LUC-Erosion and LUC-Soil were received by 5 LUC classes (I, II, III, IV, IV, and VI, whereas LUC-Slope was received by 7 LUC classes all of them except the V. LUC I class until IV were recommended for the agricultural crop and LUC V until VIII for the forestry crop. From 11 of Sub Watershed LUC VIII was expanded 107.54 ha to Sub Watershed Sarbar Rao and narrowest to Sub Watershed Maskara Rao (0.12 ha. On the other hand for LUC II was expanded to Sub Watershed Nawagaon Rao (1136.8 ha and narrowest (1.51 ha to Sub Watershed Shakumbari Rao. The location of the research in Sub Watershed Nawagaon Rao Mascara the Saharanpur city, India, with the location goegrafis from 30 o 09’ 00" N - 30o 21’ 00" N and longitude 77 o 34’ 00" E - 77 o 51’ 00" E, widely the Watershed whole 205.94 km2 or 20594.49 ha. The analysis of the image satelit with IRS (Indian Remote Sensing LISS IV in January

  14. American Uveitis Society Meeting October 30, 1995 Marriott Marquis Hotel, Atlanta, GA, USA.

    Science.gov (United States)

    Meisler, D M; Chern, K C

    1996-01-01

    1 Retinal vascular occlusion and scleroderma. Tessler H, Flores-Guevara J, Goldstein D, Chicago, IL, USA. 2 MHC Class II antigen expression in ciliary body in spontaneous and experimental uveitis. Kalsow C, Zhavoronkova M, Dwyer A, Rochester, NY & Scottsville, NY, USA. 3 IL-10 in the vitreous of patients with intraocular lymphoma. Whitcup S, Solomon D, Nussenblatt R, Chan C-C, Bethesda, MD, USA 4 Iris juvenile xanthogranuloma studied by immunohistochemistry. Shields J, Shields C, Eagle R, DePotter P, Collins M, Philadelphia, PA, USA. 5 Outcomes analysis in with JRA-associated uveitis. Dana M-R, Merayo-Lloves J, Foster C, Boston MA, USA. 6 Persistent glaucoma secondary to periocular steroids. Akduman L, Conway M, Burchfield J, Kolker A, Black D, DelPriore L, Kaplan H, St. Louis, MO, USA 7 The use of itraconazole in ocular histoplasmosis Callanan D, Fish G, Dallas, TX, USA 8 Succesful treatment of macular hole secondary to sympathetic ophthalmia. Cano J, Diaz M, Navea A, Ruiz C, Castilla M. Barcelona, Spain. 9 HLA-DR2+ intermediate uveitis. Pulido J, Tang W, Han D, Mieler W. Milwaukee, WI, USA. 10 Vein occlusion in AIDS misdiagnosed as CMV retinitis. Park K, Marx J, Rao N. Los Angeles, CA, USA. 11 HIV-associated foveal hemorrhage. Crews K, Zimmerman P, Lohner S. Salt Lake City, UT, USA. 12 Cytomegalovirus papillitis in patients with AIDS. Patel S, Rutzen A, Marx J, Thach A, Chong L, Rao N, Los Angeles, CA, USA. 13 Recurrence rate of CMV retinitis following the ganciclovir implant and pars plans vitrectomy and silicone oil. Marx J, Thach A, Rao N, Chong L. Los Angeles, CA, USA.

  15. SU-E-I-42: Normalized Embryo/fetus Doses for Fluoroscopically Guided Pacemaker Implantation Procedures Calculated Using a Monte Carlo Technique

    Energy Technology Data Exchange (ETDEWEB)

    Damilakis, J; Stratakis, J; Solomou, G [University of Crete, Heraklion (Greece)

    2014-06-01

    Purpose: It is well known that pacemaker implantation is sometimes needed in pregnant patients with symptomatic bradycardia. To our knowledge, there is no reported experience regarding radiation doses to the unborn child resulting from fluoroscopy during pacemaker implantation. The purpose of the current study was to develop a method for estimating embryo/fetus dose from fluoroscopically guided pacemaker implantation procedures performed on pregnant patients during all trimesters of gestation. Methods: The Monte Carlo N-Particle (MCNP) radiation transport code was employed in this study. Three mathematical anthropomorphic phantoms representing the average pregnant patient at the first, second and third trimesters of gestation were generated using Bodybuilder software (White Rock science, White Rock, NM). The normalized embryo/fetus dose from the posteroanterior (PA), the 30° left-anterior oblique (LAO) and the 30° right-anterior oblique (RAO) projections were calculated for a wide range of kVp (50–120 kVp) and total filtration values (2.5–9.0 mm Al). Results: The results consist of radiation doses normalized to a) entrance skin dose (ESD) and b) dose area product (DAP) so that the dose to the unborn child from any fluoroscopic technique and x-ray device used can be calculated. ESD normalized doses ranged from 0.008 (PA, first trimester) to 2.519 μGy/mGy (RAO, third trimester). DAP normalized doses ranged from 0.051 (PA, first trimester) to 12.852 μGy/Gycm2 (RAO, third trimester). Conclusion: Embryo/fetus doses from fluoroscopically guided pacemaker implantation procedures performed on pregnant patients during all stages of gestation can be estimated using the method developed in this study. This study was supported by the Greek Ministry of Education and Religious Affairs, General Secretariat for Research and Technology, Operational Program ‘Education and Lifelong Learning’, ARISTIA (Research project: CONCERT)

  16. Application of the comet assay for investigation of oxidative DNA damage in equine peripheral blood mononuclear cells.

    Science.gov (United States)

    Marlin, David J; Johnson, Lucy; Kingston, Demelza A; Smith, Nicola C; Deaton, Chris M; Mann, Sarah; Heaton, Paul; Van Vugt, Fenneke; Saunders, Kelly; Kydd, Julia; Harris, Pat A

    2004-08-01

    Oxidative stress occurs when antioxidant defense mechanisms are overwhelmed by free radicals and may lead to DNA damage, which has been implicated in processes such as aging and diseases such as cancer. The two main techniques presently used to quantify DNA damage are measurement of 8-hydroxydeoxyguanosine and the Comet assay (also known as single-cell gel electrophoresis). The aim of this study was to apply the comet assay to equine peripheral blood mononuclear cells (PBMCs) and identify two conditions in which we hypothesized that oxidative DNA damage would be increased in PBMCs: aging and equine recurrent airway obstruction (RAO, a condition similar to human asthma). The images obtained were similar to those previously published for humans, cats, and dogs. The optimum concentration of H(2)O(2) to estimate susceptibility to exogenous damage was 50 microM. Mean intraassay coefficients of variation were 4.7 and 9.7% for endogenous and exogenous tail-DNA quantities, respectively, and 7.3 and 8.3%, respectively, for interassay coefficients. There was no significant difference in either endogenous or exogenous percentages of tail DNA for samples collected from six ponies on three consecutive days. There was no significant difference in endogenous, exogenous, or exogenous (corrected for endogenous) oxidative DNA damage between mature and aged ponies. However, young pony foals had significantly less endogenous DNA damage than mature or aged ponies (P < 0.05). RAO-affected horses without airway inflammation (i.e., in clinical remission) had significantly greater endogenous damage compared with non-RAO-affected control animals (P = 0.009). There was a significant correlation between endogenous percentage of tail DNA in PBMCs and red blood cell hemolysate glutathione concentration (r = 0.720; P < 0.001). In conclusion, the comet assay appears to be suitable for investigating DNA damage in equine PBMCs.

  17. Method of Monitoring Urban Area Deformation Based on Differential TomoSAR

    Directory of Open Access Journals (Sweden)

    WANG Aichun

    2016-12-01

    Full Text Available While the use of differential TomoSAR based on compressive sensing (CS makes it possible to solve the layover problem and reconstruct the deformation information of an observed urban area scene acquired by moderate-high resolution SAR satellite, the performance of the reconstruction decreases for a sparse and structural observed scene due to ignoring the structural characteristics of the observed scene. To deal with this issue, the method for differential SAR tomography based on Khatri-Rao subspace and block compressive sensing (KRS-BCS is proposed. The proposed method changes the reconstruction of the sparse and structural observed scene into a BCS problem under Khatri-Rao subspace, using the structure information of the observed scene and Khatri-Rao product property of the reconstructed observation matrix for differential TomoSAR, such that the KRS-BCS problem is efficiently solved with a block sparse l1/l2 norm optimization signal model, and the performance of resolution capability and reconstruction estimation is compared and analyzed qualitatively and quantitatively by the theoretical analysis and the simulation experiments, all of the results show the propose KRS-BCS method practicably overcomes the problems of CS method, as well as, quite maintains the high resolution characteristics, effectively reduces the probability of false scattering target and greatly improves the reconstruction accurate of scattering point. Finally, the application is taking the urban area of the Mobara(in Chiba, Japan as the test area and using 34 ENVISAT-ASAR images, the accuracy is verifying with the reference deformations derived from first level point data and GPS tracking data, the results show the trend is consistent and the overall deviation is small between reconstruction deformations of the propose KRS-BCS method and the reference deformations, and the accuracy is high in the estimation of the urban area deformation.

  18. Research on Variable Resolution Spectrum Sensing Method Based on DWPT%基于 DW PT 的可变分辨率频谱感知方法研究

    Institute of Scientific and Technical Information of China (English)

    韦乃棋; 陈自力; 朱安石; 张恒

    2014-01-01

    Spectrum sensing is the premise of cognitive radio realization .In order to implement effective multi-resolution spectrum sensing and find usable spectrum holes fleetly ,an adaptive variable resolution spectrum sensing method based on discrete wavelet packet transform (DWPT ) was proposed .By making use of the characteristics of hierarchical decomposition and threshold denoising of wavelet packet ,the problem of subba-nd sort chaos during wavelet packet decomposition was solved .The influence of nonstationary noise uncertain-ty was eliminated effectively .The sensing could be done according to the chosen resolution and spectrum bands ,which reduced the operation complexity .The simulation results and analysis show that the proposed method has advantages of high precision ,simple arithmetic and fine flexibility .The method is adapted to fast sensing cognitive radio environment .%频谱感知是认知无线电实现的前提。为实现高效多分辨率频谱感知,快速找到可用的频谱空洞,提出了一种基于离散小波包变换(DWPT )的可变分辨率自适应频谱能量检测法。该法利用小波包变换的分层分解和阈值去噪特性,解决了小波包分解过程中的子带排序混乱问题,有效消除了噪声不确定性对检测性能的影响,并可根据需求选择需要的分辨率和频带进行感知,降低了运算复杂度。仿真结果及其分析表明,所提出的方法具有检测精度高、算法简单、灵活性强等优点,适合用来对认知无线电频谱环境进行快速感知。

  19. Noncommuting observables in quantum detection and estimation theory

    Science.gov (United States)

    Helstrom, C. W.

    1972-01-01

    Basing decisions and estimates on simultaneous approximate measurements of noncommuting observables in a quantum receiver is shown to be equivalent to measuring commuting projection operators on a larger Hilbert space than that of the receiver itself. The quantum-mechanical Cramer-Rao inequalities derived from right logarithmic derivatives and symmetrized logarithmic derivatives of the density operator are compared, and it is shown that the latter give superior lower bounds on the error variances of individual unbiased estimates of arrival time and carrier frequency of a coherent signal. For a suitably weighted sum of the error variances of simultaneous estimates of these, the former yield the superior lower bound under some conditions.

  20. Dynamics of the Oceanic Surface Mixed Layer. Proceedings of ’Aha Huliko’a Hawaiian Winter Workshop (4th) Held in Manoa, Hawaii on January 14-16, 1987,

    Science.gov (United States)

    1987-01-01

    by Niiler and Stevenson (1982), but these new observations suggest that entrainment might be very rare in the western equatorial Pacific. Thus, the...Niiler, P. and J. Stevenson , 1982: The heat budget of tropical ocean warm-water pools. J. Mar. Roe, 40 (suppl.). 465-480. R~gI p 94 Rao, M. S. V. V...land reservoirs of humus and terrestrial biota. Notice that after the initial gain in C and P mass, the atmospheric C reservoir and several of 302 SULFUR

  1. (m,n-Semirings and a Generalized Fault-Tolerance Algebra of Systems

    Directory of Open Access Journals (Sweden)

    Syed Eqbal Alam

    2013-01-01

    Full Text Available We propose a new class of mathematical structures called (m,n-semirings (which generalize the usual semirings and describe their basic properties. We define partial ordering and generalize the concepts of congruence, homomorphism, and so forth, for (m,n-semirings. Following earlier work by Rao (2008, we consider systems made up of several components whose failures may cause them to fail and represent the set of such systems algebraically as an (m,n-semiring. Based on the characteristics of these components, we present a formalism to compare the fault-tolerance behavior of two systems using our framework of a partially ordered (m,n-semiring.

  2. Periodicities in the north-south asymmetry of solar activity

    Science.gov (United States)

    Vizoso, G.; Ballester, J. L.

    1989-09-01

    A Blackman-Tukey power spectrum is performed on the values of the north-south asymmetry in the sudden disappearance of solar prominences, and the results are reported. The findings confirm the proposed existence of a periodicity of around 11 years and fails to confirm another short periodicity of around 2.3 years. The results of the power spectrum performed using values of the flare number and flare index north-south asymmetry provide a significant peak of 3.1-3.2 years. This short periodicity could be related to those found by Ramanuja Rao (1973) in several indices of solar activity.

  3. 深吃水半潜式平台垂荡响应数值分析%Numerical simulation of the heave motion of a deep draft semi-submersible platform

    Institute of Scientific and Technical Information of China (English)

    朱航; 欧进萍

    2011-01-01

    为优化半潜式平台的垂荡性能,以DPS 2001-4深吃水半潜式平台半潜式平台为例,在频率内采用粘滞阻尼线性化方法,通过数值迭代计算得到了该平台的垂荡响应幅值算子(RAO).根据得到的垂荡RAO,分析了垂荡板对平台垂荡响应的影响,并进一步求得了平台在墨西哥湾、西非和中国南海海域百年一遇海况下的垂荡响应极值.计算结果表明:垂荡板系统对平台的垂荡响应有着很好的抑制作用,但随着垂荡板放置水深的增加,平台在各海况下的垂荡响应极值逐渐变小,当水深超过100 m后,垂荡响应极值将逐渐趋于恒定.%To optimize the heave motion performance of a semi-submersible platform, according to the DPS 2001-4 deep draft semi-submersible platform, the heave response amplitude operators for the platform were obtained through numerical iteration, and the viscous damping was linearized in the numerical simulation. Based on the heave response amplitude operator ( RAO), the influence of the heave plate on the platform heave motion RAO was analyzed, and the platform heave motion extremes under 100-yr return periods for ocean conditions in the Gulf of Mexico, West Africa, and the South China Sea were calculated. The numerical results indicated that the heave plate can restrain the heave motion response of the platform, and the platform heave motion extremes gradually decrease with the increase of the heave plate depth, but would tend to be constant if the depth of heave plate exceeded 100 m.

  4. Cooperative localization for next-generation converged networks with closed-form solution

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yi-heng; CUI Qi-mei; ZHANG Ping; TAO Xiao-feng

    2009-01-01

    In this article, a novel cooperative wireless localization scheme based on information fusion is proposed. The scheme combines large-scale arrival time and small-scale distance measurements obtained from the next-generation converged networks. The maximum likelihood (ML) estimate of the terminai's position is derived with closed-form solution, and the Cramtr-Rao lower bound (CRLB) of the estimate error is investigated. Both theoretical analysis and simulation results verify that the proposed localization scheme can significantly enhance the location precision. Moreover, the mean square error of position estimate approximates the CRLB when the number of reference stations increases, which indicates that the proposed ML estimator is asymptotically efficient.

  5. 极端环境条件下TLP平台的应力校核%Stress verification of a TLP under extreme wave environment

    Institute of Scientific and Technical Information of China (English)

    闫发锁; 张大刚; 孙丽萍; 戴仰山

    2009-01-01

    计算校核了某TLP平台垂向肘板在极端环境条件下的应力响应.该垂向肘板为TLP立柱与张力支撑系统(TSS)间的连接件,是TLP平台强度评估的关键部位.根据通用的业界标准,平台的环境载荷计算采用三维线性理论,结构分析使用有限元方法.应力数值计算与处理与实测应变片的位置和方向完全一致.平台在位监测的数据使用FFT技术进行了处理,得到了不同时段统计下各浪向的应力谱密度(RAO).数值计算与平台在位实测对比表明,数值模拟的应力谱密度与实测数据吻合较好,业界的分析方法可以在极端条件下对TLP的关键部位进行有效的强度分析.%Stress response of a tension leg platform (TLP) in extreme environments was investigated in this paper. A location on one of the gussets was selected as the object point, where directional stresses were numerically simulated and also experimentally verified by a strain gage. Environmental loading and the platform.s structural strength were analyzed in accordance with industrial standards, utilizing linear wave theory and the finite element method (FEM). The fast Fourier transform technique was used to calculate the stress response amplitude operators (RAO) from the records of measurements. A comparison was performed between the stress RAO of the numerical simulation and that of the actual measurements. The results indicated that the stress RAO of the numerical simulation fitted well with measured data at specified wave headings with different periods.

  6. Contributions in Radio Channel Sounding, Modeling, and Estimation

    DEFF Research Database (Denmark)

    Pedersen, Troels

    2009-01-01

    the necessary and sufficient conditions for  spatio-temporal apertures to minimize the Cramer-Rao lower bound on the joint bi-direction and Doppler frequency estimation. The spatio-temporal aperture also impacts on the accuracy of MIMO-capacity estimation from measurements impaired by colored phase noise. We......, than corresponding results from literature. These findings indicate that the per-path directional spreads (or cluster spreads) assumed in standard models are set too large. Finally, we propose a model of the specular-to-diffuse transition observed in measurements of reverberant channels.  The model...

  7. Estimation of atomic interaction parameters by photon counting

    DEFF Research Database (Denmark)

    Kiilerich, Alexander Holm; Mølmer, Klaus

    2014-01-01

    Detection of radiation signals is at the heart of precision metrology and sensing. In this article we show how the fluctuations in photon counting signals can be exploited to optimally extract information about the physical parameters that govern the dynamics of the emitter. For a simple two......-level emitter subject to photon counting, we show that the Fisher information and the Cram\\'er- Rao sensitivity bound based on the full detection record can be evaluated from the waiting time distribution in the fluorescence signal which can, in turn, be calculated for both perfect and imperfect detectors...

  8. OFDM System Channel Estimation with Hidden Pilot

    Institute of Scientific and Technical Information of China (English)

    YANG Feng; LIN Cheng-yu; ZHANG Wen-jun

    2007-01-01

    Channel estimation using pilot is common used in OFDM system. The pilot is usually time division multiplexed with the informative sequence. One of the main drawbacks is bandwidth losing. In this paper, a new method was proposed to perform channel estimation in OFDM system. The pilot is arithmetically added to the output of OFDM modulator. Receiver uses the hidden pilot to get an accurate estimation of the channel. Then pilot is removed after channel estimation. The Cramer-Rao lower bound for this method was deprived. The performance of the algorithm is then shown. Compared with traditional methods, the proposed algorithm increases the bandwidth efficiency dramatically.

  9. Predicting Prosody from Text for Text-to-Speech Synthesis

    CERN Document Server

    Rao, K Sreenivasa

    2012-01-01

    Predicting Prosody from Text for Text-to-Speech Synthesis covers the specific aspects of prosody, mainly focusing on how to predict the prosodic information from linguistic text, and then how to exploit the predicted prosodic knowledge for various speech applications. Author K. Sreenivasa Rao discusses proposed methods along with state-of-the-art techniques for the acquisition and incorporation of prosodic knowledge for developing speech systems. Positional, contextual and phonological features are proposed for representing the linguistic and production constraints of the sound units present in the text. This book is intended for graduate students and researchers working in the area of speech processing.

  10. Generalized Hyperbolic Function Solution to a Class of Nonlinear Schrödinger-Type Equations

    Directory of Open Access Journals (Sweden)

    Zeid I. A. Al-Muhiameed

    2012-01-01

    Full Text Available With the help of the generalized hyperbolic function, the subsidiary ordinary differential equation method is improved and proposed to construct exact traveling wave solutions of the nonlinear partial differential equations in a unified way. A class of nonlinear Schrödinger-type equations including the generalized Zakharov system, the Rangwala-Rao equation, and the Chen-Lee-Liu equation are investigated and the exact solutions are derived with the aid of the homogenous balance principle and generalized hyperbolic functions. We study the effect of the generalized hyperbolic function parameters p and q in the obtained solutions by using the computer simulation.

  11. High CO2 emissions from the tropical Godavari estuary (India) associated with monsoon river discharges

    Digital Repository Service at National Institute of Oceanography (India)

    Sarma, V.V; Kumar, N.A.; Prasad, V; Venkataramana, V; Appalanaidu, S.; Sridevi, B.; Kumar, B.S.K.; Bharati, M.D.; Subbaiah, C.V; Acharyya, T.; Rao, G.D.; Viswanadham, R.; Gawade, L; Manjary, D.T.; Kumar, P.P.; Rajeev, K.; Reddy, N.P.C.; Sarma, V.V.; Kumar, M.D.; Sadhuram, Y.; Murty, T.V.R.

    . Appalanaidu, B. Sridevi, B.S.K. Kumar, M.D. Bharati, Ch.V. Subbaiah, T. Acharya, G.D. Rao, R. Viswanadham, L. Gawade, D.T. Manjary, P. P. Kumar, K. Rajeev, N.P.C. Reddy, V.V. Sarma, M.D. Kumar, Y. Sadhuram and T.V.R. Murty National Institute...-67. Borges, A.V., B. Delille and M. Frankignoulle (2005), Budgeting sinks and sources of CO2 in the coastal ocean: Diversity of ecosystems counts. Geophysical Research Letters, 32, No. L14601. Bouillon, S., M. Frankignoulle, F. Dehairs, F. et al.(2003...

  12. Thermohaline structure and circulation in the upper layers of the southern Bay of Bengal during BOBMEX-Pilot (October-November 1998)

    Digital Repository Service at National Institute of Oceanography (India)

    RameshBabu, V; Murty, V; Rao, L.V; Prabhu, C.V; Tilvi, V

    C 1984 Surface currents of the Indian Ocean (to 25 S;100 E). Surrey: Institute of Oceano- graphic Sciencies (United Kingdom). Gopalakrishna V V, Pednekar S M and Murty V S N 1996 Indian J. Mar. Sci., 25 50--55 Murty V S N, Ramesh Babu V, Rao L V G...=ISO-8859-1 Thermohaline structure and circulation in the upper layers of the southern Bay of Bengal during BOBMEX-Pilot (October -- November 1998) VRAMESH BABU,VSNMURTY, LVGRAO,CVPRABHU and V TILVI National Institute of Oceanography, Dona Paula...

  13. The Shock and Vibration Digest. Volume 14, Number 12

    Science.gov (United States)

    1982-12-01

    the following problems need further investiga- tion: 8. Rao, S.S. and Kultar Singh , "Optimum Design of Laminates with Natural Frequency Con- " the...Impulsive Loading," Intl. J. Solids Struc., 17 (6), pp 617- 11. Spillers, W.R., Singh , S., and Levy, R., "Optimi- 630(1981). zation with Frequency...21B ?|S ANNUAL ARTICLE INDEX FEATURE ARTICLES -- ISSUE PAGES Rieger, N.F. 1 5-13 The Literature of Vibration Engineering Singh , R. 2 3-9 Acoustic

  14. Biosensor Technologies for Augmented Brain-Computer Interfaces in the Next Decades

    Science.gov (United States)

    2012-05-13

    E. Wickenden, Member IEEE, Klaus Gramann, Tzyy-Ping Jung, Senior Member IEEE, Li-Wei Ko, Member IEEE, and Jyh-Yeong Chang, Member IEEE ABSTRACT | The...V. Chen, B.-C. Shyu, Z.-J. Lin, Y.-C. Chiang, F.-S. Jaw, Y.-Y. Chen, and C. Chang, BA new scenario for negative functional magnetic resonance imaging... BA general framework for brain computer interface design,[ IEEE Trans. Neural Syst. Rehab. Eng., vol. 11, pp. 70–85, 2003. [21] R. Rao and R. Scherer

  15. SANTORINI BEFORE THE MINOAN ERUPTION

    DEFF Research Database (Denmark)

    Friedrich, Walter L.; Sørensen, Annette Højen; Katsipis, Samson

    2014-01-01

    Conclusions Several detailed geological observations in the landscape of Santorini enable us to claim that the two harbour towns were located on the inner side of the caldera wall on the island of Thera prior to the Minoan Eruption. This hypothesis is in agreement with the excavation sites of Balos...... and Raos. The painted landscape in the fresco is highly comparable to what is seen in the two harbour sites discussed above. The water-filled caldera gave the inhabitants additional advantages: several natural harbours, good fishing grounds, and mineral resources. This new interpretation enables us to claim...

  16. Analysis of Kelvin Probe operational models with application to SR-POEM

    Science.gov (United States)

    Popescu, Eugeniu M.

    2011-11-01

    We present a study of several models on which Kelvin Probe (KP) instruments with flat and spherical tips rely for operation and for the determination of the contact potential difference (CPD). The study is part of the development of a high-performance KP instrument that will be used in investigations of the patch effect for the sounding rocket principle of equivalence measurement experiment. Using covariance analysis for each model we investigate its performance as imposed by the Cramer-Rao bounds and the biases introduced in the estimation of the CPD, as well as its applicability to instrument control.

  17. Acoustic wipeouts over the continental margins off Krishna, Godavari and Mahanadi river basins, East coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Murthy, K.S.R.; Rao, T.C.S.

    wipeouts. Behrens (1988) reported occurrence of gas/oil seepages beneath such ridges associated with underlying salt diapir ofT Gulf of Mexico. Acoustic wipeouts in the sub-surface layers due to a faulted continental slope are also observed of... the figures. References BEHRESS, E. W., (1988) Geology of a continental slope oil seep, Northern Gulf of Mexico. Amer. Assoc. Petrot Geo!. Bulletin. v. 72, pp. 105-114. 568 K. S. R. MURTHY AND T. C. S. RAO BRYANT, W. R. and L. B. ROEMER, (1983) Structure...

  18. Past 100 Ky surface salinity-gradient response in the eastern Arabian Sea to the summer monsoon variation recorded by delta super(18)O of G. sacculifer

    Digital Repository Service at National Institute of Oceanography (India)

    Chodankar, A.R.; Banakar, V.K.; Oba, T.

    ; Shenoi et al., 1993) and the presence of low-salinity BOB water in the southern AS result in northward- increasing east–west-trending isohalines in the basin (Fig. 1). This general east–west trend of the isoha- lines sharply deviates towards north... km 3 /y freshwater (Rao, 1979) and excess overhead precip- itation determines the freshness of the BOB. It has been shown that the alongshore pressure gradient dominates the winter-wind stress in the EAS region because of the strong density gradient...

  19. Glacial to Holocene fluctuations in hydrography and productivity along the southwestern continental margin of India

    Digital Repository Service at National Institute of Oceanography (India)

    Thamban, M.; Rao, V.P.; Schneider, R.R.; Grootes, P.M.

    monsoon history. The summer mon- * Corresponding author. E-mail address: vprao@csnio.ren.nic.in ( V. Purnachandra Rao) soons were very weak during the LGM and intense 0031-0182/01/$ - see front matter © 2001 Elsevier Science B.V. All rights reserved. PII...). With the onset of the SW monsoon, the India program in the eastern Arabian Sea showed enhanced local winds intensify the upwelling eVect. that productivity is high during the SW monsoon Signatures of this upwelling phenomenon are dis- (~0.6 g C m−2 day−1...

  20. Calculation of Vertical and Horizontal Mobilities in InAs/GaSb Superlattices (Postprint)

    Science.gov (United States)

    2011-10-13

    Antoszewski, and L. Faraone , J. Appl. Phys. 105, 091101 (2009). 2Q. K. Yang, F. Fuchs, J. Schmitz, and W. Pletschen, Appl. Phys. Lett. 81, 4757 (2002). 3R...12G. A. Umana-Membreno, H. Kala, J. Antoszewski, J. M. Dell, L. Faraone , B. Klein, G. Gautam, M. N. Kutty, E. Plis, and S. Krishna, Proc. SPIE 8012...Chandrasekhar Rao, J. Antoszewski, L. Faraone , J. B. Rodriguez, E. Plis, and S. Krishna, ibid. 92, 012121 (2008); C. Cervera, J. B. Rodrigue, J. P. Perez

  1. Active Sound Localization in a Symmetric Environment

    Directory of Open Access Journals (Sweden)

    Jordan Brindza

    2013-07-01

    Full Text Available Localization for humanoid robots becomes difficult when events that disrupt robot positioning information occur. This holds especially true in symmetric environments because landmark data may not be sufficient to determine orientation. We propose a system of localizing humanoid robots in a known, symmetric environment using a Rao-Blackwellized particle filter and a sound localization system. This system was used in the RoboCup Standard Platform League, and has been found to reduce the amount of own-goals scored as compared with the previously used localization system without sound.

  2. A NOTE ON INCONSISTENCY OF THE SCORE TEST

    Directory of Open Access Journals (Sweden)

    Sumathi K

    2010-12-01

    Full Text Available The score test proposed by Rao (1947 has been widely used in the recent years for data analysis and model building because of its simplicity. However, at the time of its computation, it has been found that the value of the score test statistic becomes negative. Freedman (2007 discussed some of the theoretical reasons for this inconsistency of the score test and observed that the test was inconsistent when the observed Fisher information matrix was used rather than the expected Fisher information matrix. The present paper is an attempt to demonstrate the inconsistency of the score test in terms of the power function.

  3. Antenna geometry strategy with prior information for direction-finding MIMO radars

    Institute of Scientific and Technical Information of China (English)

    Weidong Jiang; Haowen Chen; Xiang Li

    2015-01-01

    The antenna geometry strategy for direction finding (DF) with multiple-input multiple-output (MIMO) radars is studied. One case, usual y encountered is practical applications, is consi-dered. For a directional antenna geometry with a prior direction, the trace-optimal (TO) criterion (minimizing the trace) on the av-erage Cram ´er-Rao bound (CRB) matrix is employed. A qualitative explanation for antenna geometry is provided, which is a combi-natorial optimization problem. In the numerical example section, it is shown that the antenna geometries, designed by the proposed strategy, outperform the representative DF antenna geometries.

  4. Gibraltar Experiment, CTD Data Report 2

    Science.gov (United States)

    1989-12-01

    268.07 SST: 99.0 Tdrw: 99.0 Twat: 99.0 Wspd: 14.0 CT3 #: 1 E and N of Tarifa: -212.2km 54.6km IX-9 ctd#l reread 24sup88 an Tempurature PR THETA SA SGTH...14.0 CTD #: 3 L/RAO E and N of Tarifa: -38.8km -28.4km K-109 Tempurature PR THETA SA SGTH 2.8 7.0 12.0 17.0 22.0 27.0 18.9 22.711 36.502 25.175 0 20.0

  5. Geolocation of a Known Altitude Target Using TDOA and GROA in the Presence of Receiver Location Uncertainty

    Directory of Open Access Journals (Sweden)

    Bing Deng

    2016-01-01

    Full Text Available This paper considers the problem of geolocating a target on the Earth surface using the target signal time difference of arrival (TDOA and gain ratio of arrival (GROA measurements when the receiver positions are subject to random errors. The geolocation Cramer-Rao lower bound (CRLB is derived and the performance improvement due to the use of target altitude information is quantified. An algebraic geolocation solution is developed and its approximate efficiency under small Gaussian noise is established analytically. Its sensitivity to the target altitude error is also studied. Simulations justify the validity of the theoretical developments and illustrate the good performance of the proposed geolocation method.

  6. Ultimate quantum limit on resolution of two thermal point sources

    CERN Document Server

    Nair, Ranjith

    2016-01-01

    We obtain the fundamental quantum limit for resolving two thermal point sources using an imaging system with limited spatial bandwidth. Using the quantum Cram\\'er-Rao bound, we show that the standard Rayleigh limit is not fundamental and can be surpassed by concrete coherent measurement techniques. Our results are valid for all values of the source strength, all ranges of the electromagnetic spectrum, and for any imaging system with an inversion-symmetric point-spread function. Our findings have applications to many areas of metrology including microscopy, astronomy, and standoff target sensing.

  7. Geodesic least squares regression on information manifolds

    Energy Technology Data Exchange (ETDEWEB)

    Verdoolaege, Geert, E-mail: geert.verdoolaege@ugent.be [Department of Applied Physics, Ghent University, Ghent, Belgium and Laboratory for Plasma Physics, Royal Military Academy, Brussels (Belgium)

    2014-12-05

    We present a novel regression method targeted at situations with significant uncertainty on both the dependent and independent variables or with non-Gaussian distribution models. Unlike the classic regression model, the conditional distribution of the response variable suggested by the data need not be the same as the modeled distribution. Instead they are matched by minimizing the Rao geodesic distance between them. This yields a more flexible regression method that is less constrained by the assumptions imposed through the regression model. As an example, we demonstrate the improved resistance of our method against some flawed model assumptions and we apply this to scaling laws in magnetic confinement fusion.

  8. Further result in the fast and accurate estimation of single frequency

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A new fast and accurate method for estimating the frequency of a complex sinusoid in complex white Gaussian environments is proposed.The new estimator comprises of applications of low-pass filtering,decimation, and frequency estimation by linear prediction.It is computationally efficient yet obtains the Cramer-Rao bound at moderate signal-to-noise ratios.And it is well suited for real time applications requiring precise frequency estimation.Simulation results are included to demonstrate the performance of the proposed method.

  9. Statistical characteristics of sudden stratospheric warming as observed over the observatoire de Haute Provence (44°N, 6°E) during the 1981-2001 period

    CSIR Research Space (South Africa)

    Sivakumar, V

    2006-04-01

    Full Text Available of stratospheric sudden warming as observed over the Observatoire de Haute Provence (44°N, 6°E) during the period 1981-2001 D.V. Acharyulu, V. Sivakumar*, H. Bencherif, B. Morel, Laboratoire de l’Atmosphère et des Cyclones (LACy), CNRS–UMR 8105, Université de... La Réunion, FRANCE. * Also at National Laser Centre, Council for Scientific and Industrial Research (CSIR), Pretoria, SOUTH AFRICA. A. Hauchecorne Service d’Aéronomie, CNRS, Paris, FRANCE. D.N. Rao National Atmosphere Research Laboratory...

  10. REGIONAL NETWORK POSTNATURAL MONOPOLY Региональная сетевая постестественная монополия

    Directory of Open Access Journals (Sweden)

    Lebedev Y. Y.

    2011-12-01

    Full Text Available This article presents the results of analysis of the process of formation of a new kind of monopoly on the territory of region, resulting from a reorganization of RAO UES; it defines a new concept and its definition, the proposed measures of the state regulation of the network postnatural monopolies and purpose of increase of its efficiency at the macro, meso, micro and nanoeconomic levels, a reasonable opportunity and mechanisms of effective control and impact of the regional state authorities, business, society, and citizens on the postnatural monopoly

  11. The effects of contract farming on efficiency and productivity of small-scale sunflower farmers in Tanzania

    DEFF Research Database (Denmark)

    Henningsen, Arne; Mpeta, Daniel F.; Adem, Anwar S.

    impact on efficiency and productivity is mostly overlooked. This study addresses this salient gap by combining the approaches of Bravo-Ureta, Greene, and Solís (Empirical Economics, 2012) and Rao, Brümmer, and Qaim (AJAE, 2012). We first estimate separate production frontiers for contract farmers and non......-contract farmers that account for potential selection biases, and second, we create a meta-frontier. Using cross-sectional data from sunflower farmers in Tanzania, we find a significant selection bias. Contract farming significantly increases the yield potential but lowers the average group technical efficiency...

  12. Marching on-in-time solution of the time domain magnetic field integral equation using a predictor-corrector scheme

    KAUST Repository

    Ulku, Huseyin Arda

    2013-08-01

    An explicit marching on-in-time (MOT) scheme for solving the time-domain magnetic field integral equation (TD-MFIE) is presented. The proposed MOT-TD-MFIE solver uses Rao-Wilton-Glisson basis functions for spatial discretization and a PE(CE)m-type linear multistep method for time marching. Unlike previous explicit MOT-TD-MFIE solvers, the time step size can be chosen as large as that of the implicit MOT-TD-MFIE solvers without adversely affecting accuracy or stability. An algebraic stability analysis demonstrates the stability of the proposed explicit solver; its accuracy and efficiency are established via numerical examples. © 1963-2012 IEEE.

  13. Advances in Intelligent Signal Processing and Data Mining Theory and Applications

    CERN Document Server

    Mihaylova, Lyudmila; Jain, Lakhmi

    2013-01-01

    The book presents some of the most efficient statistical and deterministic methods for information processing and applications in order to extract targeted information and find hidden patterns. The techniques presented range from Bayesian approaches and their variations such as sequential Monte Carlo methods, Markov Chain Monte Carlo filters, Rao Blackwellization, to the biologically inspired paradigm of Neural Networks and decomposition techniques such as Empirical Mode Decomposition, Independent Component Analysis and Singular Spectrum Analysis.   The book is directed to the research students, professors, researchers and practitioners interested in exploring the advanced techniques in intelligent signal processing and data mining paradigms.  

  14. 迷迭香抗氧剂对聚丙烯的抗氧化作用%Antioxidation of Rosemary Antioxidant in Polypropylene

    Institute of Scientific and Technical Information of China (English)

    (门岂); 刘飞跃; 许凯; 陈鸣才

    2009-01-01

    通过高分子材料流变性能、自然老化实验前后力学性能、熔体流动性能的变化,研究了迷迭香抗氧剂(Rao)对聚丙烯(PP)体系的抗氧化性能的影响.结果表明,加入Rao的PP体系的流变扭矩与原体系相比明显增大;150 d老化过程中,未加抗氧剂的PP的拉伸强度由32 MPa下降至24 MPa,熔体流动速率由2.7 g/10 min上升至18.8 g/10 min,经30 d老化后冲击强度由3 kJ/m~2下降至1 kJ/m~2;150 d老化过程中,添加Rao的PP的拉伸强度由34 MPa下降至29 MPa,熔体流动速率由2.5 g/10 min上升至5.3 g/10 min,经30 d老化后冲击强度由4 kJ/m~2下降至3.2 kJ/m~2,说明添加Rao后PP体系的抗氧化性能有显著提升.%Effects of rosemary antioxidant (Rao) on the antioxidantive properties of PP were evaluated by comparing the rheological and mechanical properties before and after natural weathering. For neat PP, after 150 d's aging, the tensile strength decreased from 32 to 24 MPa, the melt flow rate increased from 2.7 g/10 min to 18.8 g/10 min; after 30 d's aging, the impact strength decreased from 3 kJ/m~2 to 1 kJ/m~2. For Rao containing PP at the same conditions, the tensile strength from 34 MPa to 29 MPa, the melt flow rate increased from 2.5 g/10 min to 5.3 g/10 min, the impact strength decreased from 4 kJ/m~2 to 3.2 kJ/m~2. In the melt torque determination, the torque of Rao containing system was obviously higher.

  15. Stochastic Heisenberg limit: optimal estimation of a fluctuating phase.

    Science.gov (United States)

    Berry, Dominic W; Hall, Michael J W; Wiseman, Howard M

    2013-09-13

    The ultimate limits to estimating a fluctuating phase imposed on an optical beam can be found using the recently derived continuous quantum Cramér-Rao bound. For Gaussian stationary statistics, and a phase spectrum scaling asymptotically as ω(-p) with p>1, the minimum mean-square error in any (single-time) phase estimate scales as N(-2(p-1)/(p+1)), where N is the photon flux. This gives the usual Heisenberg limit for a constant phase (as the limit p→∞) and provides a stochastic Heisenberg limit for fluctuating phases. For p=2 (Brownian motion), this limit can be attained by phase tracking.

  16. Identification and modeling of internal waves

    Digital Repository Service at National Institute of Oceanography (India)

    Murty, T.V.R.; Sadhuram, Y.; Rao, M.M.M.; SujithKumar, S.; Maneesha, K.; Sandhya, K.S.; Prakash, S.S.; Chandramouli, P.; Murthy, K.S.R.

    ,salanity,density,Bruntvaisala frequencyandsoundvelocityunderdifferentseasons 2.2 Currents 2.3 IdentificationofInternalWaves 2.4 CharactersticsofInternalwavesfromCTDandSpectrumanalysis 2.5 Internalwavefieldgeneration 2.6 ModellingofInternalwaves 2.7 Internalwavesimulation 3. Conclusion Contributors to the project 1.... Dr.T.V.Ramana Murty Co-investigator 2. Dr.Y.Sadhuram Member 3. Dr.M.M.Malleswara Rao Member 4. Mr.S.Sujith Kumar Member 5. Mr.S.Surya Prakash Member 6. Mr...

  17. ON CHANNEL ESTIMATION USING OPTIMAL TRAINING SEQUENCES IN CYCLIC-PREFIX-BASED SINGLE-CARRIER SYSTEMS WITH SPACE-TIME BLOCK-CODING

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    In this paper, a new scheme that combines Space-Time Block-Coding (STBC) based on an Alamouti-like scheme and the Least Squares (LS) channel estimation using optimal training sequences in Cyclic-Prefix-based (CP)\\Single-Carrier (SC) systems is proposed. With two transmit antennas, based on Cramer-Rao lower bound for channel estimation, it is shown that the Periodic Complementary Set (PCS) is optimal over frequency-selective fading channels. Compared with the normal scheme without STBC, 3dB Mean Square Error (MSE) performance gains and fewer restrictions on the length of channel impulse response are demonstrated.

  18. Hybrid Solution of Stochastic Optimal Control Problems Using Gauss Pseudospectral Method and Generalized Polynomial Chaos Algorithms

    Science.gov (United States)

    2012-03-01

    Rao discusses the most common gradient search algorithms in [71] along with some heuristic ones that use some added randomness to direct the search... aircrews and mission planners who have interest in this type of problem. 98 Target T=Threat T x1 x2 B ou nd ar y B ou nd ar y T θ V (tf , x1(tf ), x2(tf...processing. The most valuable product to mission planners and aircrews is not the set of statistics describing expected values, variances, and covariances and

  19. Sea/Lake Water Air Conditioning at Naval Facilities.

    Science.gov (United States)

    1980-05-01

    r-AO89 262 CIVIL ENGINEERING LAS (NAVY) PONT HUJENEME CA F/6 13/1 SEA/LAKF WATER AIR CONDITIONING AT N4AVAL FACILITIES.u MAY S0 .J B CIAN...AROICC. Brooklyn NY: CO; C’ode (NP (LCDR ATJ Stewart): C’ode 10)28. RDT&ELO. Philadelphia PA: Code III (Castranovo) Philadelphia. PA: Design Div. (R...Governor’s Council On Energy) NEW MEXICO SOLAR ENERGY INST. Dr. Zwibcl Las Cruces NM NY CITY COMMUNITY COLLEGE BROOKLYN , NY (LIBRARY) NYS ENERGY OFFICE

  20. On discrete cosine transform

    CERN Document Server

    Zhou, Jianqin

    2011-01-01

    The discrete cosine transform (DCT), introduced by Ahmed, Natarajan and Rao, has been used in many applications of digital signal processing, data compression and information hiding. There are four types of the discrete cosine transform. In simulating the discrete cosine transform, we propose a generalized discrete cosine transform with three parameters, and prove its orthogonality for some new cases. A new type of discrete cosine transform is proposed and its orthogonality is proved. Finally, we propose a generalized discrete W transform with three parameters, and prove its orthogonality for some new cases.

  1. Computation of diffusion coefficients for waters of Gauthami Godavari estuary using one-dimensional advection-diffusion model

    Digital Repository Service at National Institute of Oceanography (India)

    Jyothi, D.; Murty, T.V.R.; Sarma, V.V.; Rao, D.P.

    of Marine Sciences Vol. 29, June 2000, pp. 185-187 Short Communication Computation of diffusion coefficients for waters of Gauthami Godavari estuary using one-dimensional advection-diffusion model D Jyothi, T V Ramana Murty, V V Sarma & D P Rao National.... - Jan.) Y2(x) = 8.55283 x + 17.5469 (Jan. - April) These equations would be more useful to get diffusion coefficients for any point along the channel axis, which in turn, helps to compute the concentration of pollutant along the axis of estuary. Thus...

  2. Magnetic and bathymetric investigations over the Vema Region of the Central Indian Ridge: Tectonic implications

    Digital Repository Service at National Institute of Oceanography (India)

    Drolia, R.K.; Ghose, I.; Subrahmanyam, A.S.; Rao, M.M.M.; Kessarkar, P.M.; Murthy, K.S.R.

    investigations over the Vema Region of the Central Indian Ridge: tectonic implications R.K. Drolia a, * , I. Ghose b , A.S. Subramanyam c , M.M. Malleswara Rao c , P. Kessarkar b , K.S.R. Murthy c a National Geophysical Research Institute, Uppal Road, Hyderabad... of the time variation of the spreading R.K. Drolia et al. / Marine Geology 167 (2000) 413–423420 Fig. 4. (continued) rate and asymmetry, nor constrain the asymmetry by evaluating its transient or steady character. It has to await further data. We have...

  3. 水产养殖

    Institute of Scientific and Technical Information of China (English)

    1995-01-01

    951987 两种胡子鲶(胡子鲶Clariasgariepinus)和蟾胡子鲶(Clarias batrachus)仔鱼的饲养,生长和营养生理学评述=A re-view of feeding practices,growth and nutri-tional physiology in larvae of the catfishClarias gariepinus and Claria batrachus[刊,英]/Verreth J,Eding E H,Rao G R M//Nutr,Abst.Rev.(Series B).-1994,64(2)-1033 该文评述了胡子鲶同属种和地区间的饲

  4. On Compressed Sensing and the Estimation of Continuous Parameters From Noisy Observations

    DEFF Research Database (Denmark)

    Nielsen, Jesper Kjær; Christensen, Mads Græsbøll; Jensen, Søren Holdt

    2012-01-01

    Compressed sensing (CS) has in recent years become a very popular way of sampling sparse signals. This sparsity is measured with respect to some known dictionary consisting of a finite number of atoms. Most models for real world signals, however, are parametrised by continuous parameters......-Rao lower bound (CRLB) which is frequently used for benchmarking the estimation accuracy of unbiased estimators. For the popular sensing matrices such as the Gaussian sensing matrix, our analysis shows that compressed sensing on average degrades the estimation accuracy by at least the down-sample factor....

  5. Indoor Localization Accuracy Estimation from Fingerprint Data

    DEFF Research Database (Denmark)

    Nikitin, Artyom; Laoudias, Christos; Chatzimilioudis, Georgios

    2017-01-01

    The demand for indoor localization services has led to the development of techniques that create a Fingerprint Map (FM) of sensor signals (e.g., magnetic, Wi-Fi, bluetooth) at designated positions in an indoor space and then use FM as a reference for subsequent localization tasks...... on arbitrary FMs coined ACCES. Our framework comprises a generic interpolation method using Gaussian Processes (GP), upon which a navigability score at any location is derived using the Cramer-Rao Lower Bound (CRLB). Our approach does not rely on the underlying physical model of the fingerprint data. Our...

  6. A subspace-based parameter estimation algorithm for Nakagami-m fading channels

    Science.gov (United States)

    Dianat, Sohail; Rao, Raghuveer

    2010-04-01

    Estimation of channel fading parameters is an important task in the design of communication links such as maximum ratio combining (MRC). The MRC weights are directly related to the fading channel coefficients. In this paper, we propose a subspace based parameter estimation algorithm for the estimation of the parameters of Nakagami-m fading channels in the presence of additive white Gaussian noise. Comparisons of our proposed approach are made with other techniques available in the literature. The performance of the algorithm with respect to the Cramer-Rao bound (CRB) is investigated. Computer simulation results for different signal to noise ratios (SNR) are presented.

  7. Acoustical Studies of Some Schiff Bases in 1,4-Dioxane and Dimethylformamide at 318.15 K

    Institute of Scientific and Technical Information of China (English)

    BALUJA Shipra

    2006-01-01

    From experimental data of density, viscosity and ultrasonic velocity, the various acoustical properties, such as specific impedance (Z), isentropic compressibility (κs), Rao's molar sound function (Rm), the van der Waals constant (b), molar compressibility (W), intermolecular free length (Lf), relaxation strength (r), internal pressure (π),free volume (Vf), solvation number (Sn) etc., were calculated for three Schiff bases in 1,4-dioxane and dimethylformamide (DMF) at 318.15 K. The results are interpreted in terms of molecular interactions occurring in the solutions.

  8. Direct approach to quantum extensions of Fisher information

    Institute of Scientific and Technical Information of China (English)

    CHEN Ping; LUO Shunlong

    2007-01-01

    By manipulating classical Fisher information and employing various derivatives of density operators, and using entirely intuitive and direct methods, we introduce two families of quantum extensions of Fisher information that include those defined via the symmetric logarithmic derivative, via the right logarithmic derivative, via the Bogoliubov-Kubo-Mori derivative, as well as via the derivative in terms of commutators, as special cases. Some fundamental properties of these quantum extensions of Fisher information are investigated, a multi-parameter quantum Cramér-Rao inequality is established, and applications to characterizing quantum uncertainty are illustrated.

  9. Bibliography on Ceramic Matrix Composites and Reinforcing Whiskers, Platelets, and Fibers, 1970-1990

    Science.gov (United States)

    1993-08-01

    Saburo Shigaki, Yoshiki Rao, A. Srinivasa Cannon, W Roger Hirata, Yoshihiro Yoshimua, Masahiro Ceram. Int. Somiya, Shigeyuki 15 (3), 179-88, 1989...P. Chartier , T. Mullites and Mullite-Zirconia Composites Giry, J. P. Kubota, Y. Takagi, H. Mullite and Mullite Matrix Composites Government Industrial...Yong, J. A. 74 (1), 187-93, Jan 1991 Rawlings, R. D. Rogers , P. S. (AD D250 366) Mater. Sci. Technol. 7, 155-7, Feb 1991 7.1.0.48 (AD D250 906

  10. FREE FISHER INFORMATION AND AMALGAMATED FREENESS

    Institute of Scientific and Technical Information of China (English)

    孟彬; 郭懋正; 曹小红

    2004-01-01

    The notion of operator-valued free Fisher information was introduced.It is a generalization of free Fisher information which was defined by D.Voiculescu on tracial von Neumann algebras.It is proved that the operator-valued free Fisher information is closely related to amalgamated freeness,i.e.,the operator-valued free Fisher information of some random variables is additive if and only if these random variables are a free family with amalgamation over a subalgebra.Cramer-Rao inequality in operator-valued settings is also obtained.

  11. Group-SMA Algorithm Based Joint Estimation of Train Parameter and State

    Directory of Open Access Journals (Sweden)

    Wei Zheng

    2015-03-01

    Full Text Available The braking rate and train arresting operation is important in the train braking performance. It is difficult to obtain the states of the train on time because of the measurement noise and a long calculation time. A type of Group Stochastic M-algorithm (GSMA based on Rao-Blackwellization Particle Filter (RBPF algorithm and Stochastic M-algorithm (SMA is proposed in this paper. Compared with RBPF, GSMA based estimation precisions for the train braking rate and the control accelerations were improved by 78% and 62%, respectively. The calculation time of the GSMA was decreased by 70% compared with SMA.

  12. 第15届世界无损检测会议论文题录(V)%INDEX FOR PROCEEDINGS OF THE 15TH WORLD CONFERENCE ON NONDESTRUCTIVE TESTING (V)

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    @@ 方法和仪器 无损检测用数字射线成象系统的图象质量比较 421 Willems P, B Vaessen, P Soltani (比利时) 计算机化的射线照相技术——射线检测技术的未来 056 Morro F (美国) 影响胶片射线照相的重要因素 071 Singh RP, E Madhav Rao, T Singh (印度) 线性加速器屏的最优化 091 Rigaud N, JM Tchilian, JP Relet

  13. Statistical Structures on Metric Path Spaces

    Institute of Scientific and Technical Information of China (English)

    Mircea CRASMAREANU; Cristina-Elena HRETCANU

    2012-01-01

    The authors extend the notion of statistical structure from Riemannian geometry to the general framework of path spaces endowed with a nonlinear connection and a generalized metric.Two particular cases of statistical data are defined.The existence and uniqueness of a nonlinear connection corresponding to these classes is proved.Two Koszul tensors are introduced in accordance with the Riemannian approach.As applications,the authors treat the Finslerian (α,β)-metrics and the Beil metrics used in relativity and field theories while the support Riemannian metric is the Fisher-Rao metric of a statistical model.

  14. SIMTBED: A Graphical Test Bed for Analyzing and Reporting the Results of a Statistical Simulation Experiment.

    Science.gov (United States)

    1983-09-01

    Q O O N ’. 4 ft 4 t I fft4.Ir * ze . WWW*1 4~4 r-AO 0WI ft ~ Nif ~~D 77- f ~ ft~ftft - *,f, $4 - LAOI UJ . 0t 4. -s I *~f -tf ts,4- I I1Im I N 0) A...40. mma 1.4ŕMMOU-4 mo 2= oir 41 0. HW (.. ,= P.i 41 P41.. v~ u 4 Wm C6 " 0 ... * a u U 0m tni Irf tn~ 4 0 Ina u* Huq HI u- 04u uO ~ -4 ~ 4154- 0 .44 0

  15. Effects of volumetric allocation on heave response of semisubmersible in deep sea

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The configuration of semisubmersibles consisting of pontoons and columns and their corresponding heave motion response in incident progressive waves are examined. The purpose of the present study is to provide a theoretical approach to estimating the effects of volumetric allocation on natural period and response amplitude operator (RAO) in heave motion. We conclude that the amplitude of heave motion response can be considerably suppressed by appropriately adjusting volumetric allocation so that the natural heave period keeps away from the range of wave energy. The theoretical formulae are found in good agreement with the corresponding computational results by WAMIT.

  16. Measuring Thermodynamic Length

    Energy Technology Data Exchange (ETDEWEB)

    Crooks, Gavin E

    2007-09-07

    Thermodynamic length is a metric distance between equilibrium thermodynamic states. Among other interesting properties, this metric asymptotically bounds the dissipation induced by a finite time transformation of a thermodynamic system. It is also connected to the Jensen-Shannon divergence, Fisher information, and Rao's entropy differential metric. Therefore, thermodynamic length is of central interestin understanding matter out of equilibrium. In this Letter, we will consider how to denethermodynamic length for a small system described by equilibrium statistical mechanics and how to measure thermodynamic length within a computer simulation. Surprisingly, Bennett's classic acceptance ratio method for measuring free energy differences also measures thermodynamic length.

  17. Dicty_cDB: AFO620 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available alignments: (bits) Value N BM774584 |BM774584.1 ra95c11.y1 Meloidogyne incognita egg pAMP1 Bird Meloidogyne ...B17 Apis mellifera cDNA clone BB170011A20F01 5', mRNA sequence. 64 2e-10 3 AW827814 |AW827814.1 ra59b10.y1 Bird...TASE ;, mRNA sequence. 48 4e-07 3 AW871572 |AW871572.1 ra79e06.y1 Bird-Rao Meloidogyne incognita J2 Meloidog

  18. Dicty_cDB: AFE706 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available 1 ra95c11.y1 Meloidogyne incognita egg pAMP1 Bird Meloidogyne incognita cDNA 5' similar to TR:Q94272 Q94272 ...', mRNA sequence. 64 6e-08 2 AW827814 |AW827814.1 ra59b10.y1 Bird-Rao Meloidogyne incognita J2 Meloidogyne i...ncognita cDNA 5' similar to WP:K10C2.4 CE04750 FUMARYLACETOACETASE ;, mRNA sequence. 48 5e-07 3 AW871572 |AW871572.1 ra79e06.y1 Bird

  19. Reinicio de la actividad ovárica y nivel de metabolitos de lípidos en vacas lecheras suplementadas con aceite vegetal durante el posparto temprano

    OpenAIRE

    Alejandra M. Marín-Aguilar; Juan Carlos Tinoco-Magaña; José Herrera-Camacho; Laura G. Sánchez-Gil; Victor M. Sánchez-Parra; Jose Luis Solorio-Rivera; Antonio García-Valladares

    2007-01-01

    Se evaluó el reinicio de la actividad ovárica posparto (RAO) y los metabolitos de lípidos en vacas lecheras suplementadas con aceite vegetal durante el posparto temprano. Se emplearon 18 vacas Holstein Friesian de tercer parto, de 597,3 ±50,2kg y condición corporal= 3,5 ±0,6. Los animales fueron distribuidos aleatoriamente en dos grupos, uno experimental suplementado con 500g de aceite vegetal durante 8 semanas a partir de la segunda semana posparto (CAV; n=9), y uno control sin suplemento (S...

  20. Properties of natural fabric Polyalthia cerasoides

    CSIR Research Space (South Africa)

    Jayaramudu, J

    2009-06-01

    Full Text Available .Reinfored. Plast. Compos. , 26, 629 (2007). 15. M.S.Sreekala, M.G. Kumaran, and S. Thomas, J. Appl.Polym.Sci. , 66, 821 (1997). 16. B.R.Guduri, A.V. Rajulu, and A.S. Luyt, J.Appl.Polym.Sci . , 102, 1297 (2006). 1 2 3 4 5 6 7 8 9 10 11 12....Narasimhachary, G.Ramachandra Reddy, and Y.Z.Meng, J. Reinforced. Plast. Compos., 23, 127 (2004). 18. A.Varada Rajulu, G. Babu Rao, L. Ganaga Devi, Sidda Ramaih, D.Subha Prada, K.Srikant Bhat, and R. Shylashree, J. Reinforced. Plast. Compos., 24, 423 (2005). 19...