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Multi-particle correlations are investigated in an InAs quantum dot ensemble using 2D Fourier-transform spectroscopy. Signatures of trions and a fifth-order contribution from the biexciton are observed by varying the excitation polarization and density.
Coherence decay times of and between fine-structure states is obtained from an InAs quantum dot ensemble using optical 2D Fourier-transform spectroscopy. This technique allows us to investigate properties of QDs within the ensemble.
We demonstrate the effect of spatial arrangement of split-ring resonators (SRR) in a macrocell with two SRRs. The diagonal scheme presents the optimal coupling and constructively interfering scattered fields, in turn enhancing the quality factor.
Computer science educators are uniquely positioned to promote greater awareness of Green computing, using the academic setting to encourage environmentally conscious use of technology. This paper reports on practical techniques that can engage faculty and students, enabling Green computing to be integrated into the classroom and research laboratory. Analysis and empirical evaluation of each reported...
Variations in illumination still pose a major constraint in face recognition systems. Though many steps have been taken in this area, it continues to be a challenging field in this domain. We propose a framework to overcome this problem by first classifying the image into dark, normal or shadowed, and then selecting an appropriate filter for the image. This step ensures that there is no loss of features...
The Ion Cyclotron Heating and Current Drive (IC H & CD) system for ITER will provide Radio frequency (RF) heating and current drive to the ITER plasma. This system is designed to provide 20 MW into the plasma using frequencies in the range of 40 MHz to 55 MHz, which could be upgraded to 40 MW in future. This paper presents the recent development of the IC H&CD system configuration in the ITER...
Object oriented systems are considered which can be decomposed into a finite number of objects. These systems are composed at runtime of interacting objects, residing in computer memory and holding the data to be processed. Every object is described in the realm of software by its class. So, at the architectural and language level, Object Oriented Systems are composed of classes, the basic object...
A systematic procedure to achieve a target crystal size distribution (CSD) under generated operational policies in batch cooling crystallization is presented. An analytical CSD estimator has been employed in the systematic procedure to generate the necessary operational policies to achieve the target CSD. Furthermore, this systematic procedure has been integrated with a generic multi-dimensional model-based...
Recognizing faces with altered appearances is a challenging task and is only now beginning to be addressed by researchers. The paper presents an evolutionary granular approach for matching face images that have been altered by plastic surgery procedures. The algorithm extracts discriminating information from non-disjoint face granules obtained at different levels of granularity. At the first level...
For cellular handset ICs, integrating the power management unit (PMU) in the same chip as the baseband and the radio is critical for footprint and cost reduction, however, it presents unique challenges in terms of device reliability, bill of materials (BOM) and PMU performance. In this paper, a PMU integrated as part of a GSM/EDGE chip in a 65nm deep-Nwell CMOS process, comprising a battery charger,...
We propose a Deception Robust Control (DRC) for orchestrating the cyber sensors and cyber effectors present in typical enterprise information network systems operating in the ever changing situations that arise in servicing their missions. The theory and exemplar of deception control of focus here-though motivated by conventional warfare-applies to any partial information asymmetric stochastic game,...
This paper analyzes the effect of driver size and number of shells on propagation delay for Multi-Walled Carbon Nanotubes (MWCNT) interconnect at 22nm technology node. An equivalent circuit model of MWCNT is used for estimation and analysis of propagation delay. The delay through MWCNT and Cu interconnects are compared for various driver sizes and number of MWCNT shells. The SPICE simulation results...
In spite of wide availability, the current prosthesis does not meet most of the functional requirements along with the other parameters like metabolic energy, training period and cost. This paper presents the development of a low cost Above Knee (AK) prosthesis which regulates the knee damping automatically by calculating the speed of walking from the data of the normal limb. The prosthesis uses an...
Home security surveillance system using sensors, webcam and monitors may reduce losses caused by an intruder in today's world. This paper presents a home security surveillance system called `Coeus Security System' that is built using Lego Mindstorms NXT programmable bricks, sensors, a web camera and a computer system capable of running MATLAB to ensure home security. The system uses Bluetooth protocol...
We present a simple, high-sensitivity, array-based capacitive sensing architecture for biological applications. Conventional charge based capacitance measurement (CBCM) techniques sense grounded coupling capacitances along with unwanted parasitics. These parasitics can be orders of magnitude higher than the coupling capacitances, thus severely reducing the usable sensor dynamic range. The presented...
Air quality dispersion models have been used to predict the ground level concentrations (GLC) of air pollutants such as Particulate matter, SO2 and NOx etc. Industrial Source Complex Short Term Version 3 (ISCST3), a dispersion model developed by United States Environment Protection Agency (USEPA) is widely adopted in India to predict the GLC due to emissions from the industries. American Meteorological...
Deadlock is an indefinite blocking condition, occurs when two or more processes are each waiting for each other to release a resource. One way to overcome the deadlock problem in operating system environment is deadlock avoidance using Bankers safety algorithm. Safety algorithm decides whether the system will be in safe or unsafe state, on the basis of processes needs and its availability. If safety...
In this paper, we are using the features and technology of wireless sensor networks such as distributed and self-organization to build temperature monitoring system, which can monitor the temperature of bus bar junction in real time to prevent fire and other accidents. This system applies ZigBee communication protocol and uses the IC-CC2500, 2.4GHz(ISM) as RF transceiver. It has the characteristics...
Finite Newton Support Vector Regression (FNSVR) is a reliable and robust method for regression analysis which unlike other support vector regression methods, converges the computation in a few iterations. In this paper, we have used FNSVR method for embedding and extracting a binary image as a watermark in 8-bit gray scale cover images. Digital image watermarking being a time consuming task, requires...
The objective of this paper is to present a novel approach for the segmentation and characterization of breast tumor. The authors have developed an efficient tumor segmentation technique using conventional Ostu thresholding method aided by morphological reconstruction filtering technique. The parameters extracted are area, major and minor axis length, eccentricity, solidity, average gray level, standard...
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