4,181 research outputs found
EMEEDP: Enhanced Multi-hop Energy Efficient Distributed Protocol for Heterogeneous Wireless Sensor Network
In WSN (Wireless Sensor Network) every sensor node sensed the data and
transmit it to the CH (Cluster head) or BS (Base Station). Sensors are randomly
deployed in unreachable areas, where battery replacement or battery charge is
not possible. For this reason, Energy conservation is the important design goal
while developing a routing and distributed protocol to increase the lifetime of
WSN. In this paper, an enhanced energy efficient distributed protocol for
heterogeneous WSN have been reported. EMEEDP is proposed for heterogeneous WSN
to increase the lifetime of the network. An efficient algorithm is proposed in
the form of flowchart and based on various clustering equation proved that the
proposed work accomplishes longer lifetime with improved QOS parameters
parallel to MEEP. A WSN implemented and tested using Raspberry Pi devices as a
base station, temperature sensors as a node and xively.com as a cloud. Users
use data for decision purpose or business purposes from xively.com using
internet.Comment: 6 pages, 4 figures. arXiv admin note: substantial text overlap with
arXiv:1409.1412 by other author
Ab initio Wannier-function-based many-body approach to Born charge of crystalline insulators
In this paper we present an approach aimed at performing many-body
calculations of Born-effective charges of crystalline insulators, by including
the electron-correlation effects. The scheme is implemented entirely in the
real space, using Wannier-functions as single-particle orbitals. Correlation
effects are computed by including virtual excitations from the Hartree-Fock
mean field, and the excitations are organized as per a Bethe-Goldstone-like
many-body hierarchy. The results of our calculations suggest that the approach
presented here is promising.Comment: 5 pages, to appear in Phys. Rev. B. (Rapid Comm., Dec 15, 2004
CCD BVRI and 2MASS Photometry of the Poorly Studied Open Cluster NGC 6631
Here we have obtained the {\it BVRI CCD} photometry down to a limiting
magnitude of 20 for the southern poorly studied open cluster NGC 6631.
It is observed from the {\it 1.88 m} Telescope of Kottamia Observatory in
Egypt. About 3300 stars have been observed in an area of around the cluster center. The main photometric parameters
have been estimated and compared with the results that determined for the
cluster using {\it JHKs 2MASS} photometric database. The cluster's diameter is
estimated to be 10 arcmin; the reddening E(B-V)= 0.68 0.10 mag, E(J-H)=
0.21 0.10 mag, the true modulus (m-M)= 12.16 0.10 mag, which
corresponds to a distance of 2700 125 pc and age of 500 50 Myr.Comment: 13 pages, 6 figure
Digital Forensic Analysis through Document Clustering
Digital forensic is the process of uncovering and interpreting process of uncovering and interpretingelectronic data for use in a court of law. The goal of the process is to preserve any evidence in its most original form while performing a structured investigation by collecting identifying and validating the digital information for the purpose of reconstructing past events. Digital forensics deals with the analysis of artifacts on all types of digital devices. The role of digital forensics is to facilitate the investigation of criminal activities that involve digital devices, to preserve, gather, analyze and provide scientific and technical evidence, and to prepare the documentation for law enforcement authorities. Clustering methods can be used to automatically group the retrieved documents into a list of meaningful categories. Document clustering involves descriptors and descriptor extraction. Descriptors are sets of words that describe the contents within the cluster. Document cluster is generally considered to be a centralized process. Example of document clustering is web document clustering. Application of document clustering can be categorized to two types that are online and offline. Seized digital devices can provide precious information and evidence about facts
An Analysis Of Air Pollution And Human Health Effects
Hazardous chemicals escape to the environment by a number of natural and/or anthropogenic activities and may cause adverse effects on human health and the environment. Increased combustion of fossil fuels in the last century is responsible for the progressive change in the atmospheric composition. Air pollutants, such as carbon monoxide (CO), sulfur dioxide (SO2), nitrogen oxides (NOx), volatile organic compounds (VOCs), ozone (O3), heavy metals, and respirable particulate matter, differ in their chemical composition, reaction properties,emission, time of disintegration and ability to diffuse in long or short distances. Air pollution has both acute and chronic effects on human health, affecting a number of different systems and organs. It ranges from minor upper respiratory irritation to chronic respiratory and heart disease, lung cancer, acute respiratory infections in children and chronic bronchitis in adults, aggravating pre-existing heart and lung disease, or asthmatic attacks. In addition, short- and long-term exposures have also been linked with premature mortality and reduced life expectancy. This paper discussed about effects of air pollutants on human health
Nurturing Children’s Health Through Neighbourhood Morphology
Among the key factors required for the adequate development and growth of children’s physical and mental health is the child’s outdoor activities. Master plans are inclusive and provide sustainable settlements when they accommodate and respond to children. An understanding of the child’s need for outdoor spaces will help build better public spaces thereby providing opportunities for better physical, mental and emotional health of children. This paper is an effort to explore those environmental settings which are conducive for their physical activities. It tries to uncover the spatial planning approach which can contribute to child friendly spaces. The study is an investigation and a comparative analysis of a planned and an organic settlement in an urban fabric; HSR layout and Mangammanapalya in Bangalore, India. A qualitative analysis of the various layers of the physical settings has been done. The investigations reveal how each settlement caters to and supports the physical needs of children. The goal is to make use of these findings in the future planning and design intervention of neighbourhoods. The findings for the planned settlement, HSR revealed the presence of amenities like parks, playgrounds and sports facilities which the children frequented. The organic settlement lacked the presence of parks but the street network pattern revealed a majority of dead ends which are used as play spaces by children. Increase in commercial use in the settlement of HSR brought about the threat of traffic and stranger danger which act as deterrents to the independent mobility of the child while Mangammanapalya because of its cul de sacs which discourage through traffic offered a relatively safe and sustainable environment for play and mobility on its streets. A child friendly route could act as a safe and interesting path for children to explore the neighbourhood
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