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Search Results: 1 - 10 of 198801 matches for " Rajan N "
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In-Situ Domestic Load Harmonic Detection and Reduction Based on GLRM Algorithm for Optimum Filter Excerpt  [PDF]
Deepthi Joseph, N. Kalaiarasi, K. Rajan
Circuits and Systems (CS) , 2016, DOI: 10.4236/cs.2016.79182
Abstract: Power Quality measures the reliable operation between the system and to the connected loads of same system. A poor power quality causes physical damage to the equipment and also results in lower productivity with increase in energy costs. Power disturbances range from micro seconds to hours and the prolonged disturbances in hours would damage the equipments. The power quality decreases due to growth of nonlinear loads in domestic appliances, such as home Uninterrupted Power Supplies (UPS), Induction stove, Television etc. Nowadays Domestic loads are controlled or powered with power electronic devices. The power electronic devices with Direct Current (DC) components generate high frequency signal for DC-Alternating Current (AC) conversion. The conversion introduces multiple frequencies in the AC power supply. The multiple frequencies in AC power supply are called as harmonics. The harmonics in AC supply affects the lifetime of home appliances, consumes more electric current, affects the power factor, transformer efficiency, and other electricity supply systems. Till now, to avoid harmonics, the filters are erected only in industrial loads or in the substations. In this paper a novel method to detect and control harmonics in domestic appliances is proposed. Harmonic control with various filters in the filter bank, based on detection of harmonic voltage let out from the domestic appliances for power saving. To select the appropriate filter to improve power quality, we apply a novel Genetic Algorithm based Linear Regression Method (GLRM) algorithm for optimum Filter Selection. From the results we were able to reduce the total harmonic distortion level to 3.68%.The current consumption of each household appliance is reduced considerably and finally the electricity bill is reduced to 15% and overall system efficiency improves to 85%.
Congruences for rational points on varieties over finite fields
N. Fakhruddin,C. S. Rajan
Mathematics , 2004,
Abstract: We show that the number of rational points on the fibres of a proper morphism of smooth varieties over a finite field k whose generic fibre has a ``trival'' Chow group of zero cycles is congruent to 1 mod |k|. As a consequence we prove that there is a rational point on any degeneration of a smooth proper rationally chain connected variety over a finite field. We also obtain a generalisation of the Chevalley-Warning theorem.
Annular pancreas in adults (2 case reports).
Machado N,Rajan N,Rao B
Journal of Postgraduate Medicine , 1991,
Abstract: Two cases of annular pancreas in adults are being reported. In the first case, a middle aged lady presented with duodenal obstruction and gastric ulcer. Anterior H. S. V. with posterior truncal vagotomy and isoperistaltic duodeno-jejunostomy relieved her symptoms. In the second case, a young girl presented with duodenal obstruction, severe wasting and gross dehydration. She had an uneventful recovery following a duodeno-jejunostomy.
Vagal paraganglioma (2 case reports).
Machado N,Rajan N,Rao B
Journal of Postgraduate Medicine , 1991,
Abstract: Paragangliomas are rare tumours of the head and neck and are a diagnostic challenge. Two cases of paragangliomas arising from the vagus are being reported. In the first case, an angiogram raised the possibility of intravagal tumour and exploration followed by biopsy confirmed the diagnosis. In the second case, it was a diagnostic surprise where exploration was done on a clinical suspicion of parotid swelling and on the table, the swelling was found to arise from the vagus nerve pushing the parotid gland laterally.
A Precision High Speed AC Power Monitoring Device for Power Regulation and Control
Aditya P Kulkarni,N K S Rajan
Lecture Notes in Engineering and Computer Science , 2011,
Abstract:
Fast-Group-Decodable STBCs via Codes over GF(4)
N. Lakshmi Prasad,B. Sundar Rajan
Mathematics , 2010,
Abstract: In this paper we construct low decoding complexity STBCs by using the Pauli matrices as linear dispersion matrices. In this case the Hurwitz-Radon orthogonality condition is shown to be easily checked by transferring the problem to $\mathbb{F}_4$ domain. The problem of constructing low decoding complexity STBCs is shown to be equivalent to finding certain codes over $\mathbb{F}_4$. It is shown that almost all known low complexity STBCs can be obtained by this approach. New codes are given that have the least known decoding complexity in particular ranges of rate.
On Embedding of m-Sequential k-ary Trees into Hypercubes  [PDF]
Indra Rajasingh, Bharati Rajan, Ramanathan Sundara Rajan
Applied Mathematics (AM) , 2010, DOI: 10.4236/am.2010.16065
Abstract: In this paper, we present an algorithm for embedding an m-sequential k-ary tree into its optimal hypercube with dilation at most 2 and prove its correctness.
In Vitro Plant Regeneration of Morus indica L. cv. V1 Using Leaf Explant  [PDF]
Melur Kodandaram Raghunath, Karaba N. Nataraja, Jyothi Sainath Meghana, Radha Sivarajan Sajeevan, Mala V. Rajan, Syed Mashayak Hussaine Qadri
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.410249
Abstract:

Adventitious bud induction and plantlet regeneration were studied in a popular mulberry variety, V1 using leaf as an explant. Fully expanded leaf explants were cultured on Murashige and Skoog’s (MS) medium supplemented with thidiazuron (TDZ) (0.5-4.0 mg/l), 6-benzylaminopurine (BAP) (0.5-2.0 mg/l), indole acetic acid (IAA) (2.0 mg/l), gibberlic acid (GA3) (1.0-2.0 mg/l) silver nitrate (AgNO3) (2.0 mg/l) and different carbon sources such as sucrose, fructose and glucose (10%-30%) either individually or in combination to induce adventitious buds and regeneration. The highest percentage (63%) of adventitious bud formation and regeneration (68%) was achieved in the medium containing MS with TDZ (1.0 mg/l), IAA (2.0 mg/l) and AgNO3 (2.0 mg/l). For subsequent regeneration and shoot elongation the MS medium having BAP (1.0 mg/l), GA3 (2.0 mg/l) and AgNO3 (2.0 mg/l) was found to be suitable. Amongst the carbon sources tested, the most suitable carbon source was found to be sucrose (3%) followed by fructose (2%) for adventitious bud formation. Excised in vitro shoots were rooted (60%-80%) in half strength MS medium supplemented with indole-3-butyric acid (1.0 mg/l). The well rooted plantlets were hardened in soil + sand + farm yard manure (FYM) mixture with a success rate of 70%-90%. Since in vitro

Fault-Tolerant Resolvability of Certain Crystal Structures  [PDF]
Sathish Krishnan, Bharati Rajan
Applied Mathematics (AM) , 2016, DOI: 10.4236/am.2016.77055
Abstract: An ordered set W of vertices of a graph G is called a resolving set, if all the vertices of G are uniquely determined by the vector of distances to the vertices in W. The metric dimension of G is the minimum cardinality of a resolving set of G. A resolving set W for G is fault-tolerant if W\{v} is also a resolving set, for each v in W, and the fault-tolerant metric dimension of G is the minimum cardinality of such a set. In this paper we determine the metric dimension and fault-tolerant metric dimension problems for the graphs of certain crystal structures.
Socio-Economic-Political-Cultural Aspects in Malaria Control Programme Implementation in Southern India
S. K. Ghosh,Rajan R. Patil,S. N. Tiwari
Journal of Parasitology Research , 2012, DOI: 10.1155/2012/317908
Abstract: Objective. A Socio-economic-political-cultural (SEPC) study was undertaken under the Roll Back Malaria (RBM) initiative to understand the process of programme implementation and how far in the changing malaria context, the broader environment has been understood and programme components have undergone changes. Material and Methods. Two studies were carried out; first in four villages under the primary health unit (PHU) Banavaralu in Tiptur Taluka in September 2002 and the second one in April 2003 in four villages in Chitradurga district, namely, Kappagere, Kellodu in Hosadurga Taluka, and Vani Vilas Puram and Kathrikenhally in Hiriyur Taluka. Focus group discussion and key interviews were adopted to collect the qualitative data. Results. Gender discrimination and lack of empowerment of women came out strongly in social analysis. In the rural elected bodies called Panchayats, the concept of health committees was not known. Health committees as one of the important statutory committees under every Panchayat were nonexistent in reality in these villages. Financial difficulties at Grama Panchayat level and also meager budget allocation for health have led to indifferent attitude of Panchayat members towards health. It was observed that there were generally no specific cultural practices in relation to malaria cure. Cultural and traditional practices in malaria-related issues were not predominant in the community except for some sporadic instances. Conclusion and Recommendation. SEPC study is an important indicator in malaria control programme. It is ultimately the community that takes the major decision directly or indirectly and the health authority must guide them in right direction. 1. Background Vital endeavour of malaria control programme implementing activities requires first hand inventory of the community. In the existing health care delivery system, local stakeholders have not been adequately recognized [1]. Programme implementers have to realize that, in order to promote any health related activities, if the local actors are excluded, it is bound to fail. It is with this background this socio-economic-political-cultural (SEPC) study was undertaken under the Roll Back Malaria (RBM) initiative [2, 3] to understand the process of programme implementation, and how far, in the changing malaria context, the broader environment has been understood and programme component have undergone changes. Human resources at the community level often become serious bottleneck, which seriously interfere with the programme implementation and malaria programme is no
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