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Abstract
The present study attempts to optimize the outflow and the
water distribution of entire Damodar
catchment with the help of Artificial Neural Network(ANN). It is
worth to mention that the large
river valley project like Damodar Valley Corporation (DVC) with four
dams and one barrage
makes the simulation of Damodar more challenging, as it becomes a
controlled flow system.
Event of heavy floods are common which necessitates the development
of a proper optimization
of the water distribution. 8 inputs and 24 output parameters are
configured and with the help of
NeuroDimension 5, a commercial software. 4 ANN Models are prepared.
The data from 1996 to
2000 was used to create and test the models. The model with minimum
average mean square
error (MSE) (2.55%) was selected and used for the optimization. The
distribution of water by the
model shows a priority wise selection giving the highest priority to
the most important use of the
local area of the adjacent reservoir.
Full Article
Directional Properties of the Dummy-Head in Measurement Techniques
based on Binaural Evaluation
György
Wersényi
Abstract
Dummy-heads are often used for standardized
measurements where modeling of the average human head and torso is
relevant and evaluation of results is made binaurally. They are used
for noise measurements, in-situ testing of acoustical environments
as well as for research in human spatial hearing and localization.
As a measurement device, it has spectral, temporal and first of all,
directional properties. These are characterized by the complex
Head-Related Transfer Functions (HRTF) describing the directional
dependent filtering of the ears. These properties can be evaluated
through measurements using accurate settings of sound source
directions, long-term averaging and increased spatial resolution.
Monaural HRTFs of a Brüel & Kjćr manikin were measured in the
anechoic chamber and they were evaluated spectrally by focusing on
directional properties, spectral distortions, effect of the
head-shadow area and symmetries in measurement data.
Full Article
Protection Architectures for WDM
Optical Fibre Bus Sensor Arrays
Eduardo López Izquierdo, Paul Urquhart, Manuel López-Amo
Abstract
We propose and critically compare novel designs of wavelength
multiplexed fibre sensor
networks that can
withstand one or more cable failures. Our designs use protection
switching
to recover service and
they can be based on four combinations of dedicated, shared, line
and
path protection. We
identify architectures that can (1) tolerate at least one failure at
any point,
(2) perform signalling
without requiring additional external resources and (3) impose
nominally
equal transmission
impairments on all channels, be they in the working or protection
states.
Our preference for most
circumstances is the “direct unidirectional sensor array”, operated
by
either dedicated line or
dedicated path protection.
Full Article
Performance Analysis of Primary Air Heater Under Particulate
Condition in Lignite-Fired Power Plant Pipat
Juangjandee and Thawan Sucharitakul
Abstract
This research paper studies the performance of cross-flow heat
exchanger, known as the primary air heater in a 300 MW lignite-fired
power plant under particulate, no leakage, and leakage conditions.
Normally, this equipment exchanges heat between the hot flue gas and
the inlet combustion air which operates under a high content of fly
ash. Testing was executed with the full American society of
mechanical engineers, performance test code no. 4.3 field test (ASME
PTC 4.3) to provide final verification of performance. The leakage
values of selected primary air heater were 6.31, 7.37, and 7.65 %
when the power plant was run at the manufacturer guaranteed turbine
generator capacity of 100, 80, and 60 % respectively. Under these
conditions, the gas side efficiency of the selected primary air
heater was found to be at the low level of 66.83, 65.44, and 62.12 %
and X-ratios were 0.92, 0.88, and 0.79 respectively. The air heater
leakage and particulate matter have an effect on the performance of
primary air heaters and would tend to poor efficiency.
Full Article
Abstract
This paper describes the
design of a system called Semantic Bridge that provides programmable
access to unknown, remote data. Using semantic-based principles with a
shared domain model, the most recent Java technologies, and advances in
knowledge discovery, we enable data users to write abstract,
implementation-independent database programs using a Semantic
Programming Interface
(SPI).
These programs are automatically transformed into executables that run
within a secure ‘sandbox’ at each data source and return the processed
results to the remote user. The data sources define the visibility rules
for different categories of users, and only that data is accessible to
remote user programs. Apart from defining the visibility, they do not
have to provide any implementations. Because the SPI is stable over
time, Semantic Bridge can be thought of as a Generalized Web Service
where remote users are in full control of their processing needs––user-defined
data selection, userdefine doperations
on the
selected data, and user-defined input/output formats are
supported.
Full Article
Abstract
This paper presents a
new approach for making inferences about binary data. The objective is
to determine rules that lead to a certain result. The method consists of
four phases: in the first phase, the data is processed into a binary
format of a Truth Table; in the second phase, rules are defined by
utilizing an algorithm that minimizes Boolean functions (by Quine and
McCluskey); in the third phase, the rules are checked and filtered; and
in the fourth phase, simple rules that involve one to two features are
presented.
Full Article
Abstract
A slip ring
is a rotary electrical interface which performs continuous data transfer
or supplies power between a rotary and a stationary structure. A few of
the numerous approaches for transferring data include contact and
non-contact methods which use wires, radio waves, optical fibers joints
and even liquid as the transfer media. However, they all suffer inherent
drawbacks in durability, reliability, stability, electromagnetic
interference and speed. The novel system introduced in this paper
alleviates many of these issues by employing a wireless through the air
optical solution. A prototype system was built during the course of this
research which illustrates the technique. The final experimental results
agree with the expected results for a maximum reliable data transmission
rate of 1.45 MB/sec.
Full Article
Zong
Chen and Michael Recce
Abstract
Dynamic handgrip recognition is a new biometric authentication
method based on the human grasping behavior. Handgrip pattern
recognition seeks to analyze the dynamics inherent in grasping
behavior such as how the pressure varying during the grasping
process. A novel real-time biometric system based on handgrip
pattern is proposed for smart gun design in this paper. An
experiment was initialized and the results proved that handgrip
pattern recognition is a promising biometric technology for smart
gun design.
Full Article
David
I Eromon and P. A. Edigin
Abstract
Coils
with high temperature superconducting (HTS) are generally stable
against transient thermal disturbances. Protection against
spontaneous quenches is not a main design issue for an HTS coil.
However, HTS coils used in many electric devices such as motors,
generators, transformers, and current limiters will operate under
over-current fault conditions, which may result in a coil quench and
thermal runaway. Those electric devices should be able to ride
through some grid fault conditions and remain functional. This
requires a certain over-current capability of the HTS coils. This
paper discusses the overcurrent requirements from grid faults and
the thermal transient responses of a Bismuth Strontium Calcium
Copper Oxide (BSCCO) coil.
Full Article
Abstract
Many internet applications need to deal with large amount of data
collected from non-technical users and is imprecise and incomplete
in nature. Well structured rules are hardly available in general
applications and the nature and the pattern of the users can never
be fully accounted. Soft computing techniques like fuzzy logic and
neural network are ideal for coping with this type of problems. We
survey recent internet applications using these techniques from 2003
to present and summarize the applications in several categories. The
survey finds these soft computing techniques are suitable for
internet applications.
Full Article
Lamine M. Aouad, Nhien-An Le-Khac and Tahar M. Kechadi
Abstract
Huge amounts of datasets with different sizes are
naturally distributed over the network. In
this paper we propose a distributed algorithm for
frequent itemsets generation on heterogeneous clusters and grid
environments. In addition to the disparity in the performance and
the workload capacity in these environments, other constraints are
related to the datasets distribution and their nature, and the
middleware structure and overheads. The proposed approach uses a
dynamic workload management through a block-based partitioning, and
takes into account inherent characteristics of the Apriori algorithm
related to the candidate sets generation. The proposed technique
greatly enhances the performance and achieves high scalability
compared to the existing distributed Apriori-based approaches. This
approach is evaluated on large scale datasets distributed over a
heterogeneous cluster.
Full Article
Method of D2L Separation Chart in Asynchronous Machine
David I. Eromon and Paul A. Kuale
Abstract
This paper present the generalized electrical machines design
problem, with a review of induction machines. The presentation of
the machines characteristics, such as the explanation of a new chart
for separating the bore diameter (D) and axial length (L) from their
D2L is fully presented, and its role in the general electrical
machines design problems. The chart for separating the main
dimensions bore diameter (D) and axial length (L) from their D2L
product, idea thus unified all existing methods of separation of D
and L from their D2L and it also gives a
clearer understanding of the problem and allows for the easy
imagination of the physical structure of a machine. Furthermore, in
computer aided design it simplifies and economizes computer usage in
optimal design of main dimensions.
Full Article
Laboratory Evaluation of Unmodified and Polymer-Modified
Performance-Grade Binders with Anti-Stripping Additives
Selvaratnam Selvamohan , Musharraf Zaman, Joakim Laguros
Abstract
To
prevent stripping, amine-based liquid anti-stripping additives are
commonly added to asphalt binders. The effect of these
anti-stripping additives in each PG binder type is not known. The
objective of this research is to measure and compare the changes in
introduced namely, PG 70-28, PG 76-28 and PG 64-22, when two
selected anti-stripping additives are added. Performance grade of
Oklahoma PG 64-22 binder exhibited insignificant grade change
compared to the other two polymer modified binders with different
percentages of anti-stripping additives. The maximum change in high
grade temperatures for PG 64-22 was 1.5oC except at 1.00% Perma Tac
Plus. PG 70-28 underwent a grade change of 3.2oC while PG 76-28
showed 3.6oC. Given PG 76-28 was close to a PG 82-28.
Full Article
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