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At present, part of the forward RPC muon system of the CMS detector at the CERN LHC remains uninstrumented in the high-η region. An international collaboration is investigating the possibility of covering the 1.6 < |η| < 2.4 region of the muon endcaps with large-area triple-GEM detectors. Given their good spatial resolution, high rate capability, and radiation hardness, these micro-pattern...
Structural and optical properties of ZnO nanoparticles of diameter ∼ 5 nm, which are synthesized in a sol-gel route, have been studied using a variety of experimental techniques. The photoluminescence (PL) study that has been carried out on these particles in the atmospheric and vacuum conditions shows a suppression of the defect related green luminescence (GL) band and a simultaneous enhancement...
In this paper, we present the preliminary methods for detection of the boundary layer based on backscattered signals from a mobile LIDAR (LIght Detection And Ranging) developed at Council for Scientific and Industrial Research (CSIR) National Laser Centre (NLC), Pretoria (25.5° S; 28.2° E), South Africa. We have concentrated on two different methods, such as (a) statistical and (b) slope. The preliminary...
We evaluate the encapsulation and packaging reliability in fully integrated, fully wireless 100 channel Utah Slant Electrode Array (USEA)/integrated neural interface-recording version 5 (INI-R5) by monitoring the extended long term in-vitro functional stability and recording longevity. The INI encapsulated with 6-µm Parylene-C was immersed in phosphate buffer saline (PBS) for a period of over 12 months...
This paper presents an in-depth study of the forensic data on security incidents that have occurred over a period of 5 years at the National Center for Supercomputing Applications at the University of Illinois. The proposed methodology combines automated analysis of data from security monitors and system logs with human expertise to extract and process relevant data in order to: (i) determine the...
To obtain a continuous power supply Distributed Generation (DG) with a Decentralized Power System (DPS), i.e. replacing a single UPS unit with multiple, smaller units in parallel, is emerging as new paradigm. The technically challenging aspect of DPS is the synchronization of inverters and load sharing among the parallel connected inverters. In this paper, a control method is proposed and implemented...
This paper has introduced a new algorithm to deal with the problems of displacement estimation for motion compensation. The simulation results show that the quality of the motion compensated prediction is similar to the one. However, the complexity associated with the calculation of motion estimation is reduced by 97%.
In this paper, we present a novel mathematical model for lossless video compression using Cartesian co-ordinate system. The model is based on our novel approach of explanation to the working principle of Median Edge Detector(MED). Median Edge Detector predicts value of the unknown pixel, xt, using previously encountered three pixel values . This is done using following prediction model.
A Flash X-ray diode has been designed and developed for generation of single shot, nanosecond duration x-rays from KALI-5000 Pulse Power System (0.8-1 MV, 40 kA, 100 ns). The typical electron beam parameter was 500 kV, 8 kA, 100 ns, with a few hundreds of A/cm current density. The spot size for different diode configurations varied from 4 mm to 2 mm. X-ray radiograph of various metal objects were...
Rogowski coils have been used for decades for non-invasive current measurement when other probe, such as current shunts, current transformers are impracticable. The measurement of diode beam current in pulse power system under vacuum and high voltage are challenging task which requires development of Rogowski coil for specific applications. They operate in large radiation fields, under intense electron...
This paper is intended to report design methodology and implementation experiments of solid state based triggering arrangement for MARX generator of KALI-5000 (1MV, 40kA, 100nS) pulsed power system. The 15 stage bipolar MARX generator of KALI-5000 system is triggered using three triggered sparkgaps. An IGBT based trigger supply is used to trigger the first spark gap and consecutive two sparkgaps are...
In recent years, pulsed power systems have gained importance for the pulsed electron beam generation for industrial and defense applications. High voltage Energy storage capacitors were being used widely worldwide for the pulsed power system in electric field. In case of capacitive energy storage system, the size of the system is decided by capacitor size which depends on dielectric strength and relative...
This paper investigates the various effects that affect the ID-VDS characteristics in a strained-Si over SiGe NMOSFETs. The modeling is done keeping the BSIM4 parameters as the reference. The model thus developed showed precise agreement with the experimental data. It is observed that mobility in strained silicon increases and thereby enhancing current. Bandgap is affected to a lesser extent, but...
Designing RFID tag antenna for metallic objects is a challenging task as antenna parameters are highly affected by metallic surface. This paper presents a miniaturized slotted RFID tag antenna with overall dimensions of 33 mm × 16 mm × 3.2 mm for metallic objects. The proposed design contains two coplanar metallic patches which are electrically connected to the ground plane through a copper via. Multiple...
Linear Induction accelerator rated 200kV, 5kA, 100ns and 100Hz repetition rate has been designed and developed in the division. Electron linear induction accelerator belongs to a new class of short pulse, high average power accelerator being developed for various industrial, medical and defense application. The satisfactory performance of all the sub-systems including solid state power modulator,...
In a distributed control wireless ad hoc network, multi-user interference plays a significant role in determining one-to-one communication throughput performance of the network. Although the effects of exposed/hidden terminals on the network throughput in a single-channel wireless ad hoc network have been extensively studied, the interference power computation at the receiver and its effect on the...
It has been observed that adoption of different possible switching patterns/schemes affects the transient behaviours such as phase current and torque of a PMBLDC motor. Four possible switching patterns are achieved by modulating only upper/lower switches and incoming/outgoing phase switches. For the purpose of control of PMBLDC motor low cost ATMEGA 32 micro-controller is used to generate all the...
In many applications retransmission of lost packets are not permitted. In an OFDM system, due to channel fading, only a subset of carriers are usable for successful data transmission. If the channel state information is available at the transmitter, it is possible to take a proactive decision of mapping the descriptions optimally onto the good subcarriers and discard at the transmitter itself the...
Few characteristics of a Mobile Ad hoc Network, such as dynamic topology and shared wireless medium, pose various security challenges. This paper focuses on the performance investigation of reactive and proactive MANET routing protocols, namely, AODV and OLSR, under various the security attacks, where two types of attacks have been investigated. Network performance is evaluated in terms of end to...
Several License Plate Recognition systems have been developed in the past. Our objective is to design a system implemented on a standard camera-equipped mobile phone, capable of recognising vehicle license number. As a first step towards it we propose a license plate text segmentation approach that is robust to various lighting conditions, complex background owing to dirty or rusted LP and non-convential...
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