Conference Papers
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Item The independent components of characters are 'strokes'(IEEE Computer Society help@computer.org, 1999) Srinivasan, S.H.; Ramakrishnan, K.R.; Bhagavathy, S.What are the natural features of handwritten characters and how to arrive at them automatically? We apply independent components analysis on handwritten characters. Independent components analysis extracts the underlying statistically independent signals from a mixture of them. We expect strokes to be the independent components of handwritten characters. Our findings show that stroke-like features emerge as a result of the analysis confirming the above intuition. This finding is significant since it gives automatic procedures for extracting stroke-like features from multilingual character data sets. We use these features for handwritten digit recognition using a very simple classifier. The classifier is chosen to be simple so that the quality of the input feature set can be evaluated. The recognition results indicate that the features arrived at by independent component analysis are useful. © 1999 IEEE.Item SOLAR INSOLATION AT SURATHKAL - WEST COAST OF INDIA.(Pergamon Press, 1986) Nijaguna, B.T.[No abstract available]Item ELECTRO-CHEMICAL BEHAVIOUR OF COATED REINFORCEMENT IN CEMENT CONCRETE.(1987) Patil, B.T.; Gajendragad, M.R.; Ramchandran, T.; Ranganna, G.; Sudhaker Nayak, H.V.Concrete constructions exposed to marine environments eventually suffer from corrosion of embedded steel rods, in its advanced state, this corrosion can crack the concrete and weaken the structure. The behaviour of paint coated reinforcements in cement concrete containing different amounts of chloride through an electrode polarization technique. Coated steel rods perform better as far as corrosion of rebar is concerned.Item Areal evapotranspiration estimation using several alternative formulations of the CRAE hypothesis(ASCE, 1997) Nandagiri, L.Accurate estimation of ET from large irrigated areas is essential for sustainable development of land and water resources. The CRAE hypothesis offers a convenient technique for areal ET estimation using only regularly recorded meteorological data. In this study several alternative models for areal ET are derived from the fundamental CRAE hypothesis and their performances assessed using data of the Everglades Agricultural Area, Florida. Results indicate the feasibility of obtaining acceptable estimates of areal ET from irrigated land using the CRAE concept.Item Data/voicenideo integration on fiber distributed data interface(Institute of Electrical and Electronics Engineers Inc., 1990) Rudramuni, B.; Hegde, G.D.; Muthangi, S.P.; Paulraj, A.The Fiber Distributed Data Interface (FDDI) is a 100 megabit per second (Mbps) Local Area Network that uses Optical Fiber as the medium. It provides both the high bandwidth and low latency needed to match the capacity of future personal computers. Hence it is expected to become the preferred local area network systems of the 1990s. The FDDI protocol is based on a timed token ring access method. In this paper, we propose a media access control protocol for combined Data/Voice/Video services on FDDI. The most important service requirement for the packetized Voice and Video is the transport of this data with tolerable delays. Ile effect of multiple Voice and Video channels on the asynchronous data traffic and the capacity to handle these services on FDDI is investigated by means of simulation methods. © 1990 IEEE.Item STUDIES ON SUBSURFACE WATER POTENTIAL AND QUALITY FOR IRRIGATION.(Int Assoc of Hydrological Sciences, 1987) Ranganna, G.; Gajendragad, M.R.; Naganna, C.; Gurappa, K.M.; Nayak, I.V.; Chandrakantha, G.; Rao, P.R.M.The region of Western Ghats comprising the Sahyadri Mountain chain in southern India has remained underdeveloped notwithstanding its rich natural resources and flora and fauna. The Aladangadi Hole (river) basin is one such area. Although the basin receives very heavy rainfall, it faces water scarcity problems and thus has remained undeveloped. Intense development in the coastal region has created increasing demands for fresh water. As a pilot study, hydrological investigations for the yield, quality of water and soil, aquifer parameters, soil-water-crop compatibility, groundwater potential and Landsat imagery studies have been undertaken. This paper highlights several aspects of irrigation for an all-round development of the basin.Item Interactions of a group of vertical cylinders in water waves(Publ by American Soc of Mechanical Engineers (ASME), 1989) Reddy, K.I.S.; Kumar, B.N.; Dattatri, J.An analytical procedure involving Bessel functions is applied to investigate the wave interactions with a group of vertical circular cylinders. Considering the scattered wave at each cylinder in terms of Hankel functions, the inter-scattering of the waves from other cylinders is considered in the investigations. Wave forces and hydrodynamic coefficients in terms of the diffraction characteristics of single cylinders are evaluated for various groups of cylinders. A two cylinder group is considered for experimental verification of the theory. A comparison of the present procedure with boundary element and finite element methods is made.Item Performance of plasticized/superplasticized concrete in the marine environment(Publ by ASME, 1994) Patil, B.T.; Gajendragad, M.R.; Ranganna, G.; Wagh, A.B.; Sudhakaran, T.The use of admixtures, particularly plasticizers and superplasticizers in concrete, is gaining much attention now a days. Their use increases the workability of concrete which allows reduction in W/C ratio, resulting in reduced permeability. The major factor affecting durability of RCC in an aggressive environment like marine is the corrosion of reinforcement due to the corrosion inducing substances present in the media, which reaches its surface by ingression through concrete. Hence one can expect that the use of these admixtures can improve the performance of RCC in the marine environment provided proper W/C ratio is used. In the present study, the performance of RCC containing three indigenous admixtures namely, a plasticizer and two superplasticizers at different dosages with reduced W/C ratio was studied. The study was carried out by assessing the corrosion of reinforcement in concrete electrodes containing these admixtures by means of potentiostatic polarization technique. The results show that the corrosion resistance of reinforcement in increased by the use of admixtures.Item Minimizing power consumption in multiple fan networks by optimum fan selection(Soc for Mining, Metallurgy & Exploration Inc, 1995) Kumar, G.Vijaya; Sastry, V.R.; Krishna Rao, G.V.One of the main objectives while planning ventilation systems for mines with multiple fans is minimization of the total airpower consumption of the mine. Solution of this problem by conventional ventilation network analysis programs is tedious and time consuming, and may not yield optimum results in all the cases. The paper presents an algorithm for solving multiple fan networks by finding optimum combination of fan operating points for required airflow distribution in the ventilation system.Item CONVECTIVE HEAT TRANSFER BY AXIAL FLOW IN AN ANNULUS WITH POROUS LINING.(Pineridge Press, 1983) Channabasappa, M.N.; Umapathy, K.G.; Nayak, I.V.This paper covers a theoretical model of convective heat transfer by axial flow in an annulus bounded by two long concentric circular cylinders, the outer surface of the inner cylinder being provided with a non-erodible porous lining and the two bounding surfaces being maintained at constant temperatures. The analysis makes use of the velocity slip and the temperature slip boundary conditions at the interface and employs Brinkman model to obtain the velocity field in the porous zone. The influence of various parameters on the velocity and temperature fields is studied.