Optimal Constrained Wireless Emergency Network Antennae Placement

With increasing number of mobile devices, newly introduced smart devices, and the Internet of things (IoT) sensors, the current microwave frequency spectrum is getting rapidly congested. The obvious solution to this frequency spectrum congestion is to use millimeter wave spectrum ranging from 6 GHz to 300 GHz. With the use of millimeter waves, we can enjoy very high communication speeds and very low latency. But, this technology also introduces some challenges that we hardly faced before. The most important one among these challenges is the Line of Sight (LOS) requirement. In the emergent concept of smart cities, the wireless emergency network is set to use millimeter waves. We have worked on the problem of efficiently finding a line of sight for such wireless emergency network antennae in minimal time. We devised two algorithms, Sequential Line of Sight (SLOS) and Tiled Line of Sight (TLOS), both perform better than traditional algorithms in terms of execution time. The tiled line of sight algorithm reduces the time required for a single line of sight query from 200 ms for traditional algorithms to mere 1.7 ms on average

Optimal constrained wireless emergency network antenna placement

Communication is paramount, especially during a natural disaster or other emergency. Even when traditional lines of communication become unavailable, emergency response teams must be able to communicate with each other and the outside world. To facilitate this need, major cities across the United States are deploying wireless emergency networks (WENs) that serve as a secure communication channel between emergency response points (police stations, shelters, food banks, hospitals, etc.) and the outside world. An important question when designing such networks is identifying the locations within the city where access points (APs) should be placed to construct a reliable WEN. We propose a framework for identifying the optimal placement of wireless network antennas within a city, given multiple criteria constraints, and present our initial efforts to realize this framework

A comparative study of two layer versus three-layer repair of mediolateral episiotomy

Background: Since majority of the women attending study hospital are belonging to lower socioeconomic strata and active involvement of paramedical staff in providing obstetric care, this study was undertaken to find the utility of a two-layer repair of mediolateral episiotomy and compare it with the standard method of closure in relation to its simplicity, cost-effectiveness and superiority if any, over the traditional three-layered repair of episiotomy.Methods: This was a prospective interventional study comparing 100 women who underwent two-layer closure with 100 women who underwent three-layer closure of episiotomy in a tertiary care hospital in Pune, India over a period of 2 years from October 2012 to October 2014. The parameters assessed were operative time, number of suture materials required, immediate post procedure pain and complications at follow-up. Qualitative and quantitative data was analysed using unpaired t-test, chi square test and Fisher exact test.Results: Both the groups were comparable in terms of hospital stay and wound complications such as oedema, dehiscence, hematoma, requirement of resuturing, cosmesis and long-term complications such as dyspareunia. However, two-layer repair required less operative time, lesser number of suture materials and decreased pain during hospital stay as there was statistically significant difference observed between the two groups.Conclusions: In this study experience, it can be concluded that two-layer repair of episiotomy is faster, with less post-operative pain and more cost effective. Hence it provides mother with better services

Phytofabrication of silver nanoparticles by using aquatic plant Hydrilla verticilata

Sable N, Gaikwad S, Bonde S, Gade A, Rai M. 2012. Phytofabrication of silver nanoparticles by using aquatic plant Hydrilla verticilata. Nusantara Bioscience 4: 45-49. In the context of current drive to developed new green technology in nanomaterials, synthesis of nanoparticles is of considerable importance. There has been considerable work done in the field of nanoscience and nanotechnology during the last decade due to the introduction of various protocols for the synthesis of nanoparticles by using plants and microorganisms. Here we firstly report the extracellular phytosynthesis of silver nanoparticles (Ag-NPs) using aquatic plants Hydrilla verticilata. The characterization of the phytosynthesized Ag-NPs was done with the help of UV-Vis spectroscopy, FTIR, Nanoparticle Tracking Analysis (NTA), Zeta potential and SEM. The SEM micrograph revealed the synthesis of polydispersed spherical nanoparticles, with the average size of 65.55 nm. The phytofabricated Ag-NPs can be used in the field of medicine and agriculture, due to their antimicrobial potential

A File System Level Snapshot In Ext4

Snapshot makes a copy of current working system. Creating a snapshot with some processing andoverheads is important to provide the reliable data service during backup. There are two types of snapshottechniques: volume-based approach and system-based approach. The volume-based Logical VolumeManager provides compact space usability, but requires some space to save snapshot and makes systemwith extra overheads. The system-based Snapshot works better than volume based. The file system basedSnapshot does not need reserve space for snapshot. Therefore, the system-based Snapshot is considered agood solution in the computer environment where large-scale space management capability is not thatcritical. However, such snapshot feature is available in Linux kernel 2.2, 2.6 in EXT3 file system. In thispaper, we proposed a system-based snapshot for the ext4 system in Linux kernel 2.6 or higher. The main concept of the system-based snapshot mainly come from old-version system based Snapshot.Keywords: Snapcreate, kernel, Inode, SnapFS

Health Parameters Monitoring System

This paper deals with design and implementation of the biomedical system such as Health Parameter Monitoring System. Biomedical engineering is nothing but the application of engineering principles and techniques which will be applied into the medical field. The development of biomedical engineering is responsible for improving healthcare diagnosis also useful in monitoring and therapy of patient’s health. It ensures to provide quality health service to each and everyone. It monitors parameterslike ECG, EMG, temperature and heart beat rate and sending the data to doctor’s end via GSM. Periodic health monitoring or preventative care allows people to discover and treat health problems before they have consequences so that timely checking will result in positive effect. Especially for risk patients and long term applications where doctor need to monitor parameters frequently such a technology offers more freedom, comfort, and opportunities in clinical monitoring and diagnosis. The goal of the health system is to provide service to community. Many a times Chronic diseases have a significant influence on healthcare costs and are frequently caused among people. lack of health and social care personnel force us to study new innovations and really provoked us to improve existing system. Many times senior doctors have to make frequent visits to their nurse to get data regarding parameters measured that consists of Pulserate, Bodytemperature, ECG, EMG etc

Wetting simulations of high-performance polymer resins on carbon surfaces as a function of temperature using molecular dynamics

Resin/reinforcement wetting is a key parameter in the manufacturing of carbon nanotube (CNT)-based composite materials. Determining the contact angle between combinations of liquid resin and reinforcement surfaces is a common method for quantifying wettability. As experimental measurement of contact angle can be difficult when screening multiple high-performance resins with CNT materials such as CNT bundles or yarns, computational approaches are necessary to fa-cilitate CNT composite material design. A molecular dynamics simulation method is developed to predict the contact angle of high-performance polymer resins on CNT surfaces dominated by aromatic carbon, aliphatic carbon, or a mixture thereof (amorphous carbon). Several resin systems are simulated and compared. The results indicate that the monomer chain length, chemical groups on the monomer, and simulation temperature have a significant impact on the predicted contact angle values on the CNT surface. Difunctional epoxy and cyanate ester resins show the overall highest levels of wettability, regardless of the aromatic/aliphatic nature of the CNT material surface. Tetra-functional epoxy demonstrates excellent wettability on aliphatic-dominated surfaces at elevated temperatures. Bismaleimide and benzoxazine resins show intermediate levels of wetting, while typ-ical molecular weights of polyether ether ketone demonstrate poor wetting on the CNT surfaces

Screening of different Fusarium species to select potential species for the synthesis of silver nanoparticles

Eleven different Fusarium species were isolated from various infected plant materials and screened to select a potential species for the synthesis of silver nanoparticles. All the isolates were identified on the basis of cultural and microscopic characteristics using Fusarium identification keys. For the confirmation of preliminary identified isolates of Fusarium species, online BLAST analysis was carried out. All the eleven species demonstrated the ability for synthesis of silver nanoparticles. This was confirmed by UV-Vis spectroscopy, which gave characteristic peak around 420 nm. Further confirmation of silver nanoparticles was carried out using nanoparticles tracking analysis (NTA), zeta potential, photon correlation spectroscopy (PCS), powder X-ray diffractometry (XRD) and transmission electron microscopy (TEM). The smallest size of silver nanoparticles was synthesized by F. oxysporum (3-25 nm) and largest size silver nanoparticles were synthesized by F. solani (3-50 nm).Onze diferentes espécies de Fusarium foram isoladas a partir de vários materiais vegetais infectados e selecionados para escolher uma espécie potencialmente importante para a síntese de nanopartículas de prata. Todos os isolados foram identificados com base nas características de cultivo e microscópicas usando as chaves de identificação de Fusarium. Para a confirmação e identificação preliminar dos isolados de espécies de Fusarium, a análise BLAST on-line foi utilizada. Das espécies isoladas onze mostraram a capacidade para a síntese de nanopartículas de prata. A síntese de nanopartículas de prata foi confirmada por espectroscopia de UV-Vis que monstrou um pico característico em torno de 420 nm. Além disso, a confirmação da síntese de nanopartículas de prata foi realizada utilizando a análise de rastreamento de nanoparticulas (nanoparticle tracking analysis-NTA), medidas de potencial zeta, espectroscopia de correlação de fótons (PCS), difratometria de raios X de pó (XRD), e microscopia eletrônica de transmissão (TEM). As menores nanopartículas de prata foram sintetizadas por F. oxysporum (3-25 nm), enquanto as maiores foram obtidas com F. solani (3-50 nm).19741982Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq