1,293 research outputs found
Narayanella, a new name for Narayana Subba Rao (hymenoptera : mymaridae)
No full textThe name Narayana was applied (Subba Rao, 1976) to a genus erected for the new species N. pilipes reared from the gaUs of Lagerstoemia flos reginae. Unfortunately the author overlooked the vulid and prior use of Narayana by Distant (1908). Narayana Distant was erected with rusticitatus as type-species (Issidae: Homoptera). Hence Narayana Subba Rao is a junior homonym which has to be replaced according to the rules of the International Zoological Nomenclature
Sensor Selection for Angle of Arrival Estimation Based on the Two-Target Cramér-Rao Bound
No full textSensor selection is a useful method to help reduce data throughput, as well as computational, power, and hardware requirements, while still maintaining acceptable performance. Although minimizing the Cramér-Rao bound has been adopted previously for sparse sensing, it did not consider multiple targets and unknown source models. In this work, we propose to tackle the sensor selection problem for angle of arrival estimation using the worst-case Cramér-Rao bound of two uncorrelated sources. To do so, we cast the problem as a convex semi-definite program and retrieve the binary selection by randomized rounding. Through numerical examples related to a linear array, we illustrate the proposed method and show that it leads to the natural selection of elements at the edges plus the center of the linear array. This contrasts with the typical solutions obtained from minimizing the single-target Cramér-Rao bound.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Signal Processing System
An introduction to granular flow / K. Kesava Rao, Prabhu R. Nott.
No full textengineering bookfair2015Includes bibliographical references (p. 463-482) and index.xxi, 490 pages :This book describes theories for granular flow based on continuum models and alternative discrete models
Assessment of cultural beliefs and practices during the postnatal period in a coastal town of South India - A mixed method research study
No full textBACKGROUND The postpartum period continues to be an important part of the tradition and culture among Indian women. But frequently the health of the postnatal women is neglected. So, the present study aimed to explore the beliefs and practices in the postpartum period regarding diet, rest, hygiene and confinement and assess association between cultural practices and socio demographic characteristics.
METHODS A combined quantitative and qualitative study was carried out in the rural areas of Udupi district in Karnataka. Participants for the quantitative study were 110 women who had given birth in the past three months. This was followed by one focus group discussion (FGD) among twelve consenting mothers at one of the rural health centers.
RESULTS :Among the 110 women, over 80% of women had increased their
diet intake postpartum. Vegetables such as brinjal and fruits like papaya were avoided by 65.5% and 73.6% women respectively. Among the mothers 10.9% consumed less than 500 ml of water every day and 10% did not drink milk at all. Majority 94 (85%) were aware of vulval and perineal hygiene. Household work was avoided by 56% of the women while 86.3% avoided going outdoors. Many women took home remedies for faster recuperation. These practices were influenced by the socioeconomic status and the woman’s educational status.
CONCLUSION Traditional postpartum practices are still popular among women in rural Karnataka. It is critical to identify the harmful practices and reinforce the positive healthy practices to make postpartum period a healthy and joyful period for the mother
Buoyancy considerations in a fluidized bed of ground particles:
No full textThe research conducted for this thesis determines and quantifies the forces acting on a large submerged object in a gas-solid fluidized bed of Geldart A ground particles at the onset of bubbling. In particular, the additional load from the previously reported de-fluidized region of particles found above submerged objects in fluidized beds is quantified. A force model was developed and comparisons between this and the experimental data yielded properties of the de-fluidized region, such as the shape and height of the hood, and the angle to which it rises. Drag is measured by comparing forces on objects of different geometries subject to the same conditions. Buoyancy was measured by summing the pressure force acting to push the submerged object out of the bed and the counteracting pressure force of the bed over the submerged object pushing it deeper into the bed. The de-fluidized region is found to have a significant impact on the buoyancy of the object by creating an additional weight force above the object thus increasing the pressure in this region. Explanations for the hood shape and size are made through phenomenological results obtained through visual observations. Particle transport through voidage collapses at the surface, i.e. “bubbling”, create a secondary particle circulation within the bed adding particles to the top of the hood. The size of the bubbles appears to determine the extent of the hood.M.S.Includes bibliographical references (p. 78-79)by Prakash R. Ra
The Country-Product-Dummy Method: A Stochastic Approach to the Computation of Purchasing Power Parities in the ICP
No full textA paper for presentation at the SSHRC Conference on Index Numbers and Productivity Measurement to be held during 30 June � 3 July, 2004 in Vancouver. The author wishes to thank Bettina Aten, Erwin Diewert, Alan Heston, Chris O�Donnell and Marcel Timmer for helpful discussions on the subject matter of this paper.
Mating system of Ophiopogon xylorrhizus (Liliaceae), an endangered species in southwest China
No full textThe mating system of Ophiopogon xylorrhizus Wang et Dai was studied in three natural populations with allozyme electrophoresis. The outcrossing rate was estimated by assaying eight enzyme loci. A mixed mating system model was used, and outcrossing rates were estimated for populations and families. The multilocus outcrossing rates in three populations were 0.467, 0.323, and 0.091. The extent of outcrossing in populations depended on the plant density (r = 0.9998; P < 0.02; df = 1). The frequency distribution of family outcrossing rates was slightly bimodal. A mixed mating system with considerable complete selfing and complete outcrossing was found in this species. Positive correlations were observed between family outcrossing rate and maternal heterozygosity (r = 0.70-0.98) and between family outcrossing rate and fecundity (r = 0.971; P < 0.0005; df = 7). Inbreeding depression was examined in populations P3 and P4, both of which had high outcrossing rates. Inbreeding depression was expressed mainly in seed production. Mating system pattern contributed to the high genetic variation in this species. Because of high inbreeding depression and habitat destruction, this species is threatened with extinction. Conservation in situ by protecting the habitat is the best way to conserve this species.Plant SciencesSCI(E)7ARTICLE3440-44515
Detection of image structures using the Fisher information and the Rao metric
No full textIn many detection problems, the structures to be detected are parameterized by the points of a parameter space. If the conditional probability density function for the measurements is known, then detection can be achieved by sampling the parameter space at a finite number of points and checking each point to see if the corresponding structure is supported by the data. The number of samples and the distances between neighboring samples are calculated using the Rao metric on the parameter space. The Rao metric is obtained from the Fisher information which is, in turn, obtained from the conditional probability density function. An upper bound is obtained for the probability of a false detection. The calculations are simplified in the low noise case by making an asymptotic approximation to the Fisher information. An application to line detection is described. Expressions are obtained for the asymptotic approximation to the Fisher information, the volume of the parameter space, and the number of samples. The time complexity for line detection is estimated. An experimental comparison is made with a Hough transform-based method for detecting lines
Treatment Compliance among Patients with Hypertension and Type 2 Diabetes Mellitus in a Coastal Population of Southern India
No full textBackground: Hypertension and diabetes are major risk factors for cardiovascular and cerebrovascular disease. Adherence is a primary determinant of the effectiveness of treatment because poor adherence attenuates optimum clinical benefit and paves the way for complications.
Methods: The cross-sectional community-based survey was carried out among men and women aged 30 years and above in the field practice area of a medical college to assess treatment compliance with respect to hypertension and type 2 diabetes mellitus. The study comprised of 426 subjects, already diagnosed with hypertension (287) and type 2 diabetes mellitus (139). During house visits, data were collected by personal face-to-face interview using a pre-tested structured questionnaire. Compliance was determined by indirect methods, which included self-reporting and interviews with the patients.
Results: Compliance to hypertension treatment was found to be 82.2%, while 83.6% of individuals with type 2 diabetes mellitus were on regular medication. Among the individuals on regular medication, 88 (37.3%) of them had controlled blood pressure. Although the compliance was good, blood pressure control was not optimal. Adherence was better among females as compared with males. Literacy status and socio-economic background were not found to be associated with treatment compliance. High cost of treatment for hypertension (39.3%) and diabetes (30.4%) and asymptomatic nature of the disease were the most common reasons cited for not taking regular medications.
Conclusions: Adherence to hypertension and diabetes treatment was good. High cost of medications and asymptomatic nature of the disease were the reasons identified among the non-adherent patients
Scientometric Dimensions of Innovation Communication Productivity of the Chemistry Division at Bhabha Atomic Research Centre
No full textScientrometric analysis of 1733 papers published by the teams comprising total of 926 participating scientists at Chemistry Division of Bhabha Atomic Research Centre (BARC) during 1970-1999 in the domains: Radiation & Photochemistry and Chemical Dynamics (649), Solid State Studies (558), Inorganic, Structural and Materials Chemistry (460) and Theoretical Chemistry (66) were analysed for yearwise productivity, authorship pattern and collaboration. The highest number of publicationsin a year were 98 and 104 produced in 1989 and 1996 respectively. Average number of publications per year were 57.76. Highest collaboration coefficient 1.0 was in 1977 and 1999.
The authors with most prolific publications were J. P. Mittal (204), R. M. Iyer (190), J. V. Yakhmi (156), V. K. Jain (106), Hari Mohan (96), K. N. Rao (92), I. K. Gopalakrishnan (80), P. N. Moorthy (78), T. Mukherjee (77), and S. K. Kulshreshtha (74).
The core journals preferred for publishing with high number of publications were: Indian Journal of chemistry - A (96), Radiation Physics and Chemistry (92), Chemical Physics Letters (67), Journal of Physical Chemistry (59) and Indian Journal of Chemistry (45). Publication concentration was (28.57%) and publication density was (5.48). Top ranking journals publishing chemistry division,BARC publications were from UK (471), India (326), The Netherlands (302), USA (277) and Switzerland (104)
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