892 research outputs found
A Lightweight and Attack Resistant Authenticated Routing Protocol for Mobile Adhoc Networks
In mobile ad hoc networks, by attacking the corresponding routing protocol,
an attacker can easily disturb the operations of the network. For ad hoc
networks, till now many secured routing protocols have been proposed which
contains some disadvantages. Therefore security in ad hoc networks is a
controversial area till now. In this paper, we proposed a Lightweight and
Attack Resistant Authenticated Routing Protocol (LARARP) for mobile ad hoc
networks. For the route discovery attacks in MANET routing protocols, our
protocol gives an effective security. It supports the node to drop the invalid
packets earlier by detecting the malicious nodes quickly by verifying the
digital signatures of all the intermediate nodes. It punishes the misbehaving
nodes by decrementing a credit counter and rewards the well behaving nodes by
incrementing the credit counter. Thus it prevents uncompromised nodes from
attacking the routes with malicious or compromised nodes. It is also used to
prevent the denial-of-service (DoS) attacks. The efficiency and effectiveness
of LARARP are verified through the detailed simulation studies.Comment: 14 Pages, IJWM
Simplified Algorithm for Dynamic Demand Response in Smart Homes Under Smart Grid Environment
Under Smart Grid environment, the consumers may respond to incentive--based
smart energy tariffs for a particular consumption pattern. Demand Response (DR)
is a portfolio of signaling schemes from the utility to the consumers for load
shifting/shedding with a given deadline. The signaling schemes include
Time--of--Use (ToU) pricing, Maximum Demand Limit (MDL) signals etc. This paper
proposes a DR algorithm which schedules the operation of home appliances/loads
through a minimization problem. The category of loads and their operational
timings in a day have been considered as the operational parameters of the
system. These operational parameters determine the dynamic priority of a load,
which is an intermediate step of this algorithm. The ToU pricing, MDL signals,
and the dynamic priority of loads are the constraints in this formulated
minimization problem, which yields an optimal schedule of operation for each
participating load within the consumer provided duration. The objective is to
flatten the daily load curve of a smart home by distributing the operation of
its appliances in possible low--price intervals without violating the MDL
constraint. This proposed algorithm is simulated in MATLAB environment against
various test cases. The obtained results are plotted to depict significant
monetary savings and flattened load curves.Comment: This paper was accepted and presented in 2019 IEEE PES GTD Grand
International Conference and Exposition Asia (GTD Asia). Furthermore, the
conference proceedings has been published in IEEE Xplor
Improving medical image perception by hierarchical clustering based segmentation
It has been well documented that radiologists' performance is not perfect: they make both false positive and false negative decisions. For example, approximately thirty percent of early lung cancer is missed on chest radiographs when the evidence is clearly visible in retrospect. Currently computer-aided detection (CAD) uses software, designed to reduce errors by drawing radiologists' attention to possible abnormalities by placing prompts on images. Alberdi et al examined the effects of CAD prompts on performance, comparing the negative effect of no prompt on a cancer case with prompts on a normal case. They showed that no prompt on a cancer case can have a detrimental effect on reader sensitivity and that the reader performs worse than if the reader was not using CAD. This became particularly apparent when difficult cases were being read. They suggested that the readers were using CAD as a decision making tool instead of a prompting aid. They conclude that "incorrect CAD can have a detrimental effect on human decisions". The goal of this paper is to explore the possibility of using hierarchical clustering based segmentation (HSC), as a perceptual aid, to improve the performance of the reader
Improving medical image perception by hierarchical clustering based segmentation
It has been well documented that radiologists' performance is not perfect: they make both false positive and false negative decisions. For example, approximately thirty percent of early lung cancer is missed on chest radiographs when the evidence is clearly visible in retrospect [1]. Currently Computer-Aided Detection (CAD) uses software, designed to reduce errors by drawing radiologists' attention to possible abnormalities by placing prompts on images. Alberdi et al examined the effects of CAD prompts on performance, comparing the negative effect of no prompt on a cancer case with prompts on a normal case. They showed that no prompt on a cancer case can have a detrimental effect on reader sensitivity and that the reader performs worse than if the reader was not using CAD. This became particularly apparent when difficult cases were being read. They suggested that the readers were using CAD as a decision making tool instead of a prompting aid. They conclude that "incorrect CAD can have a detrimental effect on human decisions" [2]. The goal of this paper is to explore the possibility of using Hierarchical Clustering based Segmentation (HCS) [3], as a perceptual aid, to improve the performance of the reader
A Scheme to Implement a Universal Two-Qubit Quantum Circuit using Cross-Resonance Hamiltonian
In this brief report, we propose a circuit which is locally equivalent to a
recently proposed universal two-qubit quantum circuit involving two
applications of special perfect entanglers (SPEs) and local y-rotations.
Further, we discuss a scheme of implementation of the equivalent circuit using
cross-resonance Hamiltonian. Finally, we implement the B-gate circuit using a
CNOT gate and a gate. This requires the implementation
time which is approximately 64.84% of the time required to implement the same
gate using two CNOT gates.Comment: 6 pages, Research in progress, Comments are welcom
Hyers-Ulam stability of a certain Fredholm integral equation
In this paper, by using Fixed point Theorem we establish the Hyers-Ulam stability and Hyers-Ulam-Rassias stability of certain homogeneous Fredholm Integral equation of the second kind and non-homogeneous equation.info:eu-repo/semantics/publishedVersio
Iron environment non-equivalence in both octahedral and tetrahedral sites in NiFe2O4 nanoparticles: study using Mössbauer spectroscopy with a high velocity resolution
Mössbauer spectrum of NiFe2O4 nanoparticles was measured at room temperature in 4096 channels. This spectrum was fitted using various models, consisting of different numbers of magnetic sextets from two to twelve. Non-equivalence of the 57Fe microenvironments due to various probabilities of different Ni2+ numbers surrounding the octahedral and tetrahedral sites was evaluated and at least 5 different microenvironments were shown for both sites. The fit of the Mössbauer spectrum of NiFe 2O4 nanoparticles using ten sextets showed some similarities in the histograms of relative areas of sextets and calculated probabilities of different Ni2+ numbers in local microenvironments. © 2012 American Institute of Physics
Effect of educational interventions on pharmacovigilance awareness among M.B.B.S. internee’s in a tertiary care teaching hospital
Background: Spontaneous reporting of adverse drug reactions (ADRs) has played a major role in detection of previously unobserved ADRs. In spite of setting up ADR monitoring centres, only 6-10% of all ADRs are reported which has been contributed to the lack of knowledge among healthcare professionals. This study was planned to address this aspect. To evaluate and compare the effect of educational intervention in enhancing the knowledge of MBBS internee’s regarding pharmacovigilance.Methods: A cross sectional, educational interventional observational study was conducted using two copies of a pretested validated questionnaire (pre & post CME) with 17 questions among 130 MBBS internees. They were subjected to a Continuous Medical Education on pharmacovigilance. A hand’s on training on ADR reporting was also conducted in which they were divided into 10 batches and asked to fill a Central Drugs Standard Control Organization Adverse Drug Reporting form on the case scenario given to them and forms were analyzed.Results: Out of 130 internees, 114 (87.69%) and 98 (75.38%) had completely filled them. The overall awareness about pharmacovigilance increased from 62.50% to 82.25% (p< 0.0001). There was a statistically significant increase in mean value from 14.38 ± 0.3020 to 18.92 ± 0.2860 (p< 0.0001) on analyzing the knowledge scores. 90% of ADR forms revealed substantial errors, which were explained to the participants.Conclusions: This study clearly shows that early sensitization through educational interventions at internship phase of M.B.B.S. will increase the number of ADRs being reported in our country
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