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Design of Partially Reconfigurable Computing
System and Implementation on Virtex-4 FPGA
-- Sandeep Sharma, Ashutosh Gupta,
Manoj Duhan and Solomon Raju Kota
The paper presents the methodological algorithm of partial reconfiguration flow
for execution and implementation of Reconfigurable
Modules (RMs) on Xilinx Virtex-4(XC4VFX12)
device. Its interface controller through UART for 32-bit RM was designed. An interactive interface was
created for a system designed with static as well as dynamic parts. Using this interface, operands are assigned
to the 32-Bit arithmetic and logical RMs at run-time. The dynamic part included the two
reconfigurable regions which were allocated to execute various logical and 32-bit arithmetic modules in a
time-shared manner. Static part was the region of the design that did not change during partial reconfiguration
and contained the logic to control the partial reconfiguration process. To verify partial reconfiguration
execution at run-time, an interface was designed to make user interaction with the system at run-time.
Interface design included the controllers for controlling the flow of data to and from the reconfigurable modules
to the external world (host environment) through bus macros. The controllers were designed as
static modules. All the modules, static as well as dynamic were designed and simulated to verify the
functionality with supporting simulation tool using ModelSim-6.0d and synthesized with Xilinx 9.1.02i_PR10 (ISE).
© 2010 IUP. All Rights Reserved.
Viewing Angle-Dependent Microwave Reflection Studies on Moisture-Laden Black Soil
-- Vijaya Puri, S S Nalawade and M S Patil
The paper reports the angle of reflection-dependent microwave studies in the
X (8-12 GHz) and Ku (12.4-18 GHz) bands of two types of moisture-laden black soil. The attenuation
of microwaves in the reflection mode using standard gain horn antenna free space measurement was
studied. The angles of reflection of
90° and 75° were very sensitive to moisture content. The frequency range
of 16.5 GHz to 17.2 GHz may be more useful for detecting the type of soil. For lower moisture content,
X band showed larger sensitivity.
© 2010 IUP. All Rights Reserved.
Sensitivity Analysis of Steady-State Methyl
Acetate Synthesis Reactive Distillation Column Using
Aspen Plus
-- Dipaloy Datta and Dipesh S Patle
In chemical processing, simultaneous reaction and separation of the product help to increase
conversion rate and productivity, and saves material handling and processing costs. In this study, a sensitivity
analysis of heterogeneous Reactive Distillation (RD) using Aspen Plus was carried out to understand the
complex behavior of a reactive distillation column. The esterification reaction of methanol by acetic acid to
form methyl acetate was considered for the sensitivity analysis. The steady state results were validated
with the experimental results reported by Popken et al. (2001). Considering these steady state results as
reference, sensitivity analysis was done. In the simulation, RADFRAC model was chosen to take care of
the complexities arising due to simultaneous reaction and separation in a single unit. UNIQUAC
property method was selected in the simulator for equilibrium calculations.
© 2010 IUP. All Rights Reserved.
An Economical Polymer Support for the Synthesis of
3' Amino Group Containing Oligonucleotides
-- Ajay Kumar
Derivatization of 3-bromo-1-(4,4'-dimethoxytrityl)-2-propanol on CPG support via a succinyl
linkage allows automated synthessis of oligonucleotides and gives rise to
3'-NH2 containing
oligonucleotides during final deprotection, with 29% ammonium hydroxide at 55 °C.
© 2010 IUP. All Rights Reserved.
Age Determination in Common Indian Toad, Bufo melanostictus, by Skeletochronology
-- B N Andia, P K Dixit, S Behera and H N Behera
Common Indian toad (Bufo melanostictus) of both sexes showed excellent positive correlation between body
weight and Snout-to-Vent (S-V) length, body weight and bone weight as well as body weight and gonad weight,
suggesting the utility of these parameters as indirect markers of chronological age and indicating continuous
structural growth. The relative weight of bone of both sexes increased up to maturation and then gradually decreased
with body weight, showing slower rate of growth with advancing age. The observation of gonad indicates that
these animals become sexually mature when they attain a body weight of about 38-45 g in male and 36-43 g in
females. However, reliability of such morphometric data needed support from a more accurate method of bone
histology based on the techniques of `skeletochronology'. Counting of growth rings in histological sections of humerus
and femur suggested that in natural surroundings, the life span of common toad of both sexes is 4 years. The
animals not showing any growth rings in their skeletal parts were considered to be young and had not completed a year
in their natural surroundings.
© 2010 IUP. All Rights Reserved.
Reliability Evaluation and Decision Support System
of a Pharmaceutical Plant
-- Deepika Garg, Kuldeep Kumar and Jai Singh
The paper proposes a method to compute the reliability of a pharmaceutical plant.
A decision support system for the concerned plant was also developed. The pharmaceutical plant
mainly consists of nine subsystems working in a series. One subsystem, namely, the Rotary Compression
Machine was supported by standby units with perfect switch over device. The remaining eight subsystems
were prone to failure. Mathematical model of pharmaceutical plant was developed using Markov
birth-death process. The differential equations were developed on the basis of probabilistic approach
using transition diagram which were further solved using the matrix method. A program was developed in
C language to study the variation of reliability with respect to time. Steady-state availability of the
concerned plant was also calculated in order to develop the decision matrices which provide various availability
levels for different combinations to failure/repair rates of different subsystems. This enables the management
to quantitatively analyze all the factors, viz., maintenance strategies and states of nature, which influence
the maintenance decisions associated with the pharmaceutical plant. The findings of this paper would
be highly beneficial to the plant management for the corrective and timely execution of proper
maintenance decisions and hence enhance the performance of the system.
© 2010 IUP. All Rights Reserved.
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