2. Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/1/7

Browse

Filters

1990 - 19996

Settings

Start date: 1990End date: 1999

Search Results

Now showing 1 - 6 of 6
  • No Thumbnail Available
    Item
    Pipelined Parallel Processor to implement MD4 Message digest algorithm on Xilinx FPGA
    (1998) David S.
    The paper presents a pipelined parallel processor architecture design to implement the MD4 message digest algorithm which computes the message digest or the fingerprint of 128 bit fixed length, for any arbitrary length of input message. The processor implements the arithmetic, logic and circular shift operations by a pipelined parallel process. The architecture is designed to suit the design flexibility of the Xilinx Field Programmable Gate Arrays (FPGAs) The processor reads the message from an external RAM, 16-bit at a time and internal operations are performed with 32-bit data. The major advantage of the design is increased speed of computation and minimum hardware. The processor computes the digest with a speed approximately three times faster than the software version implemented in DSP processors.
  • No Thumbnail Available
    Item
    Minimizing power consumption in multiple fan networks by optimum fan selection
    (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.
  • No Thumbnail Available
    Item
    Performance of plasticized/superplasticized concrete in the marine environment
    (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.
  • Thumbnail Image
    Item
    Data/voicenideo integration on fiber distributed data interface
    (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.
  • No Thumbnail Available
    Item
    Areal evapotranspiration estimation using several alternative formulations of the CRAE hypothesis
    (1997) Nandagiri, Lakshman
    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.
  • Thumbnail Image
    Item
    The independent components of characters are 'strokes'
    (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.