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Regional-Based LEACH For Energy Efficiency In Wsns
Get PDFNetwork lifetime and throughput are the major considerations for determining the overall performance of a wireless sensor network (WSN). There have been various protocols proposed based on Hierarchical Clustering to improve network lifetime. The proposed Regional-Based LEACH is a centralized cluster-based protocol for extending the stability period of the WSNs. This protocol aims to accomplish better energy efficiency by dividing the sensing field into sub-regions and selects Cluster Heads for each region based on their residual energy along with the incorporation of Base station mobility. This leads to a relatively uniform energy consumption and residual energy level among the nodes in a region leading to an extended stability period
Genetic Diversity among Desmodium Gangeticum (L.) DL Accessions a Desmodin Synthesising Ethno-Medicinal Plant With SSR and Internal Transcribed Spacer Region for Species Conservation
Get PDFIn the present study simple sequence repeat (SSR) andintertranscribed spacer markers markers were used inDesmodium gangeticum to find out the genetic diversityanalysis for the biodiversity conservation of the Species as theplant is being used in medicinal preparations as well as havemany industrial applications. The study was aimed to find outthe relationships among different accessions. We find intrapopulationmean genetic value of (1.835) and Shannon (0.641)among the accessions. in AMOVA analysis, we noticed smallvariation accessions as (P = 1).The dendrogram generatedthrough distance matrix using the SIMQUAL-Dice Coefficientmodule of NTSYSpc ver matches to some extent with the PCAgraph. In the barcode ITS marker analysis the UPGMA showsthe accessions clustered into two groups. Blast results showedmaximum E-value in DG2 accession. In conclusion the abovebased markers can be used for the population conservationand authentication of the above medicinally important plant
The Si-Photonic Modulator Using Three- Waveguides Coupler Structure
Get PDFWe proposed and demonstrate the Si-modulatorusing three-waveguides coupler structure for the first time. Byusing three-waveguide structure can decrease the couplinglengthcontrary to conventional directional coupler structure. Forthe modulation operation, pn diode is employed to have junctionat the only one waveguide. The proposed structure wasfabricated using CMOS-compatible process and shows thecompact device size about ~500 μm2 which is much smaller thanMZI modulator structure. By applying forward bias voltage of1.2 V, π-phase shift is achieved with Vsw∙L ~ 0.23 V∙mm. Finally,it shows operation speed up to 3 Gbps with extinction ratio of 3dB which is faster than carrier injection using p-i-n diode. Itcanaffordable for the operation speed up to 3 Gbps using carrierinjection of pn diode by applying forward bias. We expect thatperformance of device can be enhanced using more sophisticatedfabrication process and can be used as the new structure of Siphotonicmodulator
Aspergillus Genomes Projects: Review, Resources, Uses and Future Applications
Get PDFThe genome sequence information has in recent times turned out to be available for setting Aspergillus species. The initial Aspergillus genome to be ordered is such of A. nidulans, with a three times exposure realized in 1998 by Cereon Genomics (Monsanto). This was prepared obtainable by confined community right to use in April 2001, as well as complete right to use approved in January 2003. A complete thirteen time’s exposure of the A. nidulans genome, integrating the Cereon information, has from that time made available to public by the Whitehead Institute/MIT Center for Genome Research. No database holds each of the 14 available Aspergillus genomes; most are available from various resources. Aspergillus genomics is used in human diseases and biotechnology. The arrangements of Aspergillus genomes, together the right now available and the ones to be released sometime later will proceed to make the advancement of alternate levels of system-wide study. It recommended increasing the access of the genomes
A Model for Exchanging Secure Information between Ophthalmologists
Get PDFWith a wide variety of eye problems and diseases, the need for discussion between ophthalmologists increasing day by day. Especially when ophthalmologist wants to communicate with each other's and discusses unclear conditions and symptoms remotely. It is difficult to share patient information and images which related to his condition with another ophthalmologist who works in another place securely. As we know there is a huge growth in data exchange technologies for medical data. In data exchange, security is one of the most important and essential issues for healthcare systems to protect patients' related information. We will facilitate the communication between ophthalmologists by enabling them to share patient information remotely and securely. Therefore, we developed a model by using peer-to-peer architecture to exchange patient information. Also we address the security which is the most important issue by applying three techniques: permission, encryption, and logs
Evolution on the Microstructure of Alumina Coated Stainless Steel Using Electro Phoretic Deposition
Get PDFThis paper emphasizes on the microstructure of Al2O3 coating fabricated on biomedical 316L stainless steel using Electrophoretic deposition technique (EPD) by varying the voltage from 10-70 V. An adherent dense coating was obtained at 55 V. The microstructure of the coated surfaces was characterized using Scanning electron microscope (SEM). The coatings fabricated at 55 V have resulted in higher adhesion, lower porosity as compared to the bare substrate
A Simple Power Electronic Interface for Grid Connected PV System Using Multilevel Inverter with Hysteresis Current Control
Get PDFA power electronic interface for grid connected photovoltaic (PV) system using boost converter and multilevel inverter (MLI) has been proposed. The variable dc voltage of the PV array ranging from 60V to 80V is fed as input to the boost converter and the duty ratio of the boost converter is adjusted to obtain the required output voltage of 175V. The boosted voltage of the PV array is given to the MLI, which has the advantage of reduced number of switches. The triggering pulses for IGBT switches in the MLI are given by using Hysteresis Current Controller (HCC) technique. This control strategy is effective to make grid current sinusoidal and to achieve unity power factor. The proposed scheme is simulated in MATLAB/Simulink and the results are presented. Experimental model of this scheme is developed and the results are compared. This work uses 5 PV panels of 21V, 5A each in series
A Novel Energy-Link Failure Recovery Routing (E-LFRR) Algorithm for QOS Optimization in Wireless Sensor Network
Get PDFWireless Sensor Network (WSN) is a collection ofsensor devices capable of sensing and transmittingenvironmental changes to a common base station (BS) or sink.Energy efficiency and lifetime enhancement is complex in thesenetworks due to lack of centralized control system, dataintensive nature and battery limited communications. Severalenergy preserving techniques including clustering and treebased routing were proposed to overcome energy drain anddata handling issues, as a part of optimizing network. The foresaid authentication process compromise with Quality ofService (QoS) and increases complexity that ceases theperformance of the routing algorithm. We propose anintegrated approach for energy optimization and noderecovery post failure method, Energy-Link Failure RecoveryRouting (E-LFRR) algorithm that utilizes both traditionalrouting process and specific node selection scheme in anadaptive fashion. E-LFRR monitors node energy level throughMonitored Transmission (MT) and pursues communicationthrough Replaced Transmission (RT. E-LFRR intend tominimize early energy drain and uncontrolled broadcasts inthe network. Simulation results prove the combined approachminimizes overhead, energy utilization and delay, retainsappreciable count of alive nodes and thus improving networkperformance
Security Threats and Countermeasures In Cloud Computing
Get PDFSecurity issues have given rise to immerse anactive area of research because of the many security threatsthat many organizations have faced today. Addressing theseissues requires gaining the trust of application users andcloud services. In this research paper, we highlighted themajor threats to the security of cloud systems, whileintroducing the most appropriate responses. We mentionedand discussed the latest potential threats. After someeffective countermeasures are listed and explained
A Lexicon-Based Approach to Build Reputation from Social Media
Get PDFNowadays, many social media platforms are widely used to express people’s opinions about their daily experiences and interests. These platforms encourage people to exchange and share information about a particular brand, company or even a political point of view. Consequently, huge amount of data which can be extracted and analyzed to obtain some useful knowledge are available. In this paper, we propose to build a reputation of a given service provider (i.e. brand, product or service) from the collected social media data. To do so, we have developed a lexicon as a basic component for sentiment polarity in Arabic idioms. That is, the lexicon is used to classify words extracted from “Tweets†into either a positive or negative word. We use beta probability density functions to combine feedback from the lexicon to derive reputation scores. The experimental results show that our proposed approach is consistent with sentiment analysis approach results