26,899 research outputs found
Ontology-based Classification and Analysis of non- emergency Smart-city Events
Several challenges are faced by citizens of urban centers while dealing with
day-to-day events, and the absence of a centralised reporting mechanism makes
event-reporting and redressal a daunting task. With the push on information
technology to adapt to the needs of smart-cities and integrate urban civic
services, the use of Open311 architecture presents an interesting solution. In
this paper, we present a novel approach that uses an existing Open311 ontology
to classify and report non-emergency city-events, as well as to guide the
citizen to the points of redressal. The use of linked open data and the
semantic model serves to provide contextual meaning and make vast amounts of
content hyper-connected and easily-searchable. Such a one-size-fits-all model
also ensures reusability and effective visualisation and analysis of data
across several cities. By integrating urban services across various civic
bodies, the proposed approach provides a single endpoint to the citizen, which
is imperative for smooth functioning of smart cities
Computation by measurements: a unifying picture
The ability to perform a universal set of quantum operations based solely on
static resources and measurements presents us with a strikingly novel viewpoint
for thinking about quantum computation and its powers. We consider the two
major models for doing quantum computation by measurements that have hitherto
appeared in the literature and show that they are conceptually closely related
by demonstrating a systematic local mapping between them. This way we
effectively unify the two models, showing that they make use of interchangeable
primitives. With the tools developed for this mapping, we then construct more
resource-effective methods for performing computation within both models and
propose schemes for the construction of arbitrary graph states employing
two-qubit measurements alone.Comment: 13 pages, 18 figures, REVTeX
Thermoelastic Contact Problem of an Elastic Layer Resting on an Elastic Foundation
This paper gives an analysis of the distribution stress in an infinite isotropic elastic layer, which rests on a semi-infinite isotropic elastic foundation and is indented by a rigid heated punch. The thermal and elastic properties of the layer and foundation are assumed to be different. Two problems are discussed. In the first problem the punch is a flat ended circular cylinder of unit radius, while in the second it is of conical shape. The problems are first reduced to dual integral equations, which are reduced to two Fredholm integral equations of the second kind. Iterative solutions of these equations are obtained for large value of h. Expressions for quantities of physical interest are derived
Unexplored photoluminescence from bulk and mechanically exfoliated few layers of Bi2Te3
We report the exotic photoluminescence (PL) behaviour of 3D topological
insulator Bi2Te3 single crystals grown by customized self-flux method and
mechanically exfoliated few layers (18 plus minus 2 nm)/thin flakes obtained by
standard scotch tape method from as grown Bi2Te3 crystals.The experimental PL
studies on bulk single crystal and mechanically exfoliated few layers of Bi2Te3
evidenced a broad red emission in the visible region. These findings are in
good agreement with our theoretical results obtained using the ab initio
density functional theory framework.Comment: Main MS (17 Pages text including 4 Figs): Suppl. info. (4 pages);
Accepted Scientific Report
Field Experiments on Jute Soil Stabilisers
The Central Road Research Institute has been constantly working in the area of geotextiles since early 1980s. A number of laboratory studies on evaluation of geotextiles for their suitability for road application, as well as, actual field trials have been carried out by the Institute. Recently, a project was taken up for the development and promotion of jute based geotextiles for road applications. A number of field trials have been carried out using jute based geotextiles for various applications. The paper presents summary of field experiments carried out to improve the soil behavior, improvement in the stability of road side slopes and the filtration function in fills behind a retaining wall using jute geotextiles
Dimensional and temperature dependence of metal insulator transition in correlated and disordered systems
We study the dimensional dependence of the interplay between correlation and
disorder in two dimension at half filling using 2D disordered Hubbard
model with deterministic disorder both at zero and finite temperatures.
Inclusion of without disorder leads to a metallic phase at half filling
below a certain critical value of . Above this critical value
correlation favours antiferromagnetic phase. Since disorder leads to double
occupancy over the lower energy site, the competition between Hubbard and
disorder leads to the emergence of a metallic phase, which can be quantified by
the calculation of Kubo conductivity, gap at half-filling, density of states,
spin order parameter, Inverse participation ratio (IPR) and bandwidth. We have
studied the effect of disorder on the system in a very novel way through a
deterministic disorder which follows a Fibonacci sequence. Behaviour of
different parameters show interesting features on going from a two to quasi one
dimensional system.Comment: 6 Pages, 16 figure
Evaluation of Potato-Based Crop Sequences for Crop Diversification in Malwa Region of Madhya Pradesh
A study was conducted to evaluate different crop sequences under limited-period irrigation conditions at farmers' fields in four villages of Malwa region of Madhya Pradesh during 2007-08. Six crop sequences, viz., Soybean-Garlic, Soybean-Onion, Soybean-Wheat, Soybean-Potato, Green gram-Radish-Potato and Green gram-Potato-Wheat were compared. Results revealed that crop sequence had remarkable influence on various competition indices. Highest potato equivalent yield (506.25q/ha) was recorded in green-gram- radish-potato crop sequence, followed by soybeangarlic, green-gram-potato-wheat and soybean-potato crop sequences. Land Utilization Index (LUI) was highest in green-gram-potato-wheat crop sequence and minimum in soybean-garlic and soybean-potato (both at 0.64) crop sequences. Green-gram-radish-potato crop sequence attained highest production efficiency (200.89kg/ha per day). Highest cost of input, output and net returns were obtained in greengram-radish-potato crop sequence whereas, Cost: Benefit ratio was maximum under soybean-onion crop sequence, followed by soybean-wheat and green-gram-radishpotato sequence
Mathematical modelling of austempering by finite element method
Austempered ductile iron (ADI) possesses a superior toughness than ordinary cast iron because the residual phase associated with bainitic ferrite is retained aust-enite instead of martensite or carbide. The desired micro- structure (devoid of pearlite, martensite or carbide) can be obtained provided the effective cooling rates at diff-erent cross-sections are accurately determinable for components with varying shape, composition and heat treatment requirements. In this study, a finite element model (FEM) has been developed to predict the temperature profile along different cross-sections following austeni-tizing at 870°C and austempering at 370°C. Solid bodies
of different shapes have been meshed into hexahedron ele-ments by the present software. The o verall global matrix equation has been numerically solved by the Gaussian
elimination method. Finally, it is found that the results predicted by the present model is in well accordance with the relevant experimental data on austemperability
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