4,061 research outputs found
Purging of untrustworthy recommendations from a grid
In grid computing, trust has massive significance. There is lot of research
to propose various models in providing trusted resource sharing mechanisms. The
trust is a belief or perception that various researchers have tried to
correlate with some computational model. Trust on any entity can be direct or
indirect. Direct trust is the impact of either first impression over the entity
or acquired during some direct interaction. Indirect trust is the trust may be
due to either reputation gained or recommendations received from various
recommenders of a particular domain in a grid or any other domain outside that
grid or outside that grid itself. Unfortunately, malicious indirect trust leads
to the misuse of valuable resources of the grid. This paper proposes the
mechanism of identifying and purging the untrustworthy recommendations in the
grid environment. Through the obtained results, we show the way of purging of
untrustworthy entities.Comment: 8 pages, 4 figures, 1 table published by IJNGN journal; International
Journal of Next-Generation Networks (IJNGN) Vol.3, No.4, December 201
Gravity and Large Extra Dimensions
The idea that quantum gravity can be realized at the TeV scale is extremely
attractive to theorists and experimentalists alike. This proposal leads to
extra spacial dimensions large compared to the electroweak scale. Here we give
a very systematic view of the foundations of the theories with large extra
dimensions and their physical consequences.Comment: 26 pages, 3 diagram
OLGA : An Ontology and LSTM-based approach for generating Arithmetic Word Problems (AWPs) of transfer type
Machine generation of Arithmetic Word Problems (AWPs) is challenging as they
express quantities and mathematical relationships and need to be consistent.
ML-solvers require a large annotated training set of consistent problems with
language variations. Exploiting domain-knowledge is needed for consistency
checking whereas LSTM-based approaches are good for producing text with
language variations. Combining these we propose a system, OLGA, to generate
consistent word problems of TC (Transfer-Case) type, involving object transfers
among agents. Though we provide a dataset of consistent 2-agent TC-problems for
training, only about 36% of the outputs of an LSTM-based generator are found
consistent. We use an extension of TC-Ontology, proposed by us previously, to
determine the consistency of problems. Among the remaining 64%, about 40% have
minor errors which we repair using the same ontology. To check consistency and
for the repair process, we construct an instance-specific representation (ABox)
of an auto-generated problem. We use a sentence classifier and BERT models for
this task. The training set for these LMs is problem-texts where sentence-parts
are annotated with ontology class-names. As three-agent problems are longer,
the percentage of consistent problems generated by an LSTM-based approach drops
further. Hence, we propose an ontology-based method that extends consistent
2-agent problems into consistent 3-agent problems. Overall, our approach
generates a large number of consistent TC-type AWPs involving 2 or 3 agents. As
ABox has all the information of a problem, any annotations can also be
generated. Adopting the proposed approach to generate other types of AWPs is
interesting future work
Academic Audit and Quality Assurance in Higher Education
The role of higher education institutions is reflected in its learning outcomes. The learning outcomes contribute to develop quality professionals by enhancing competency in subject knowledge and intellectual capability, grooming professionalism and employability skills. Still further it contributes to emotional and social maturity, sound character, sharp business acumen, strong scientific temper and strategic thinking among the learners. This could be materialized only through imparting comprehensive, continually enhanced and global quality professional education supported by a sound quality management system. Quality policy contributes to institutionalizing the quality assurance processes. Commitment to providing quality teaching and learning through well designed and systematic curriculum delivery using multitude of learning experiences is at the core of this policy. A variety of quality assurance processes are institutionalized focusing around teacher quality, curriculum delivery and pedagogy, research and training, skill development of students, orientation programmes for overall personality development and broad range of activities which equip the students to face challenges and take up risks with courage. Academic Audit gives feed-back on its efficiency. The observations from the audit are utilised for institutional improvement
Author productivity and the application of Lotka’s Law in LIS publications
The paper examines authorship pattern of 556 papers published in Journal of Documentation during 2003 to 2015. In addition to the papers, a sample of 1550 references from a population of 15,529 unique references given at the end of the papers was selected using simple random sample method. It was found that almost half of the publications were written by single authors. Lotka’s Law was tested on the resulting 2106 publications using Kolmogorov-Smrinov goodness-of-fit. The K-S test and the author productivity graph revealed that Lotka’s law was applicable to the set LIS publications.
Supernovae as Probes of Extra Dimensions
Since the dawn of the new millennium, there has been a revived interest in
the concept of extra dimensions.In this scenario all the standard model matter
and gauge fields are confined to the 4 dimensions and only gravity can escape
to higher dimensions of the universe.This idea can be tested using table-top
experiments, collider experiments, astrophysical or cosmological observations.
The main astrophysical constraints come from the cooling rate of supernovae,
neutron stars, red giants and the sun. In this article, we consider the energy
loss mechanism of SN1987A and study the constraints it places on the number and
size of extra dimensions and the higher dimensional Planck scale.Comment: 5 pages, no figures, new references are adde
Pulmonary Tumor Detection by virtue of GLCM
132–134As per the technical evolution and latest trend, Image processing techniques has become a boon in medical domain especially for tumor detection. Presence of tumor in Lungs which leads to lung cancer is a prominent and trivial disease at 18%. This is important to be detected at early stage thereby decreasing the mortality rate. The survival rate among people increased by early diagnosis of lung tumor. Detection of tumor cell will improve the survival rate from 14 to 49%. The aim of this research work is to design a lung tumor detection system based on analysis of microscopic image of biopsy using digital image processing. This can be done using Gray Level Co-Occurrence Matrix (GLCM) method and classified using back propagation neural network. This method is used for extracting texture features based on parameters such as contrast, correlation, energy, and homogeneity from the lung nodule. The microscopic lung biopsy images are classified into either cancer or non-cancer class using the artificial neural network algorithm. The proposed system has proven results in lung tumor detection and diagnosis
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