Ajay Kumar

Doppler-tuned Bragg Spectroscopy of Excited Levels in He-Like Uranium: a discussion of the uncertainty contributions (2009)

Trassinelli, Martino, Kumar, Ajay, Beyer, H. F., Indelicato, Paul, Märtin, Renate, Reuschl, Regina, ...

We present the uncertainty discussion of a recent experiment performed at the GSI storage ring ESR for the accurate energy measurement of the He-like uranium 1s2p3P2- 1s2s3S1 intra-shell transition....

published in Journal of the American Planning Association, Fall 1995 (2009)

David Levinson, Ajay Kumar

This paper analyzes 1968 and 1987-88 metropolitan Washington, DC household travel surveys to understand the daily allocation of time among different activities of individuals classified by work...

Robot Reliability Using Petri Nets and Fuzzy Lambda-Tau Methodology (2009)

Kumar, Ajay, Sharma, S. P., Kumar, Dinesh

Robot reliability has become an increasingly important issue in the last few years due to increased application of robots in many industries (like automobile industry) under hazardous and...

A New Antispoofing Approach for Biometric Devices (2009)

P. Venkata Reddy, Ajay Kumar, Tanvir Singh Mundra

Abstract — The deployment of fingerprint sensors is increasingly becoming common and has now gained high user acceptance. However, fingerprint sensors are susceptible to spoofing using artificial...

T. S. Mundra and A. Kumar: Micro Power Battery State-of-Charge Monitor 623 Micro Power Battery State-of-Charge Monitor (2009)

Tanvir Singh Mundra, Ajay Kumar

Abstract — This paper presents the design and implementation of a micro power battery state of charge monitor. The novelty of this design lies in the extreme low power consumption and accurate...

Comparison and Combination of Iris Matchers for Reliable Personal Identification (2009)

Ajay Kumar, Arun Passi

The biometric identification approaches using iris images are receiving increasing attention in the literature. Several methods for the automated iris identification have been presented in the...

To appear in Pattern Recognition, 2009 On Estimating Performance Indices for Biometric Identification † (2009)

Jay Bhatnagar, Ajay Kumar

This paper investigates an information theoretic approach for formulating performance indices for the biometric authentication. Firstly, we formulate the constrained capacity, as a performance index...

Computer Vision-based Fabric Defect Detection: A Survey (2009)

Ajay Kumar, Senior Member Ieee

The investment in automated fabric defect detection is more than economical when reduction in labor cost and associated benefits are considered. The development of fully automated web inspection...

Scale and Scope Externalities in Growth of IT Industries in India: An Agglomeration Perspective (2009)

Robert J. Kauffman, Ajay Kumar

Externalities occur among agglomerated firms. Scale externalities occur between firms in an industry with similar activities. Scope externalities occur when heterogeneous activities are placed in...

A Wide Dynamic Range High-Q High-Frequency Bandpass Filter with an Automatic Quality Factor Tuning Scheme (2009)

Kumar, Ajay

A Wide Dynamic Range High-Q High-Frequency Bandpass Filter with an Automatic Quality Factor Tuning Scheme Ajay Kumar 176 Pages Directed by Dr. Phillip E Allen An 80 MHz bandpass filter with a tunable...

A Wide Dynamic Range High-Q High-Frequency Bandpass Filter with an Automatic Quality Factor Tuning Scheme (2009)

Kumar, Ajay

A Wide Dynamic Range High-Q High-Frequency Bandpass Filter with an Automatic Quality Factor Tuning Scheme Ajay Kumar 176 Pages Directed by Dr. Phillip E Allen An 80 MHz bandpass filter with a tunable...

A wide dynamic range high-q high-frequency bandpass filter with an automatic quality factor tuning scheme (2009)

Kumar, Ajay

A Wide Dynamic Range High-Q High-Frequency Bandpass Filter with an Automatic Quality Factor Tuning Scheme Ajay Kumar 176 Pages Directed by Dr. Phillip E Allen An 80 MHz bandpass filter with a tunable...

Biomass thermochemical gasification: Experimental studies and modeling (2009)

Kumar, Ajay

The overall goals of this research were to study the biomass thermochemical gasification using experimental and modeling techniques, and to evaluate the cost of industrial gas production and combined...

Thermochemical Biomass Gasification: A Review of the Current Status of the Technology (2009)

Ajay Kumar, David D. Jones, Milford A. Hanna

A review was conducted on the use of thermochemical biomass gasification for producing biofuels, biopower and chemicals. The upstream processes for gasification are similar to other biomass...

Observation of the 2p3/2 -> 2s1/2 intra-shell transition in He-like uranium (2009)

Trassinelli, Martino, Kumar, Ajay, Beyer, Heinrich, Indelicato, Paul, Märtin, Renate, Reuschl, Regina, ...

We present the first observation of the 1s2p 3P2 → 1s2s 3S1 transition in He-like uranium. The experiment was performed at the internal gas-jet target of the ESR storage ring at GSI exploiting a...

Observation of the 2p3/2 -> 2s1/2 intra-shell transition in He-like uranium (2009)

Trassinelli, Martino, Kumar, Ajay, Beyer, Heinrich, Indelicato, Paul, Märtin, Renate, Reuschl, Regina, ...

We present the first observation of the 1s2p 3P2 → 1s2s 3S1 transition in He-like uranium. The experiment was performed at the internal gas-jet target of the ESR storage ring at GSI exploiting a...

A snapshot of the emerging tomato genome sequence (2009)

Mueller, Lukas, Klein Lankhorst, René, Tanksley, Steven D., Giovannoni, James J., White, Ruth, Vrebalov, Julia, ...

The genome of tomato (Solanum lycopersicum L.) is being sequenced by an international consortium of 10 countries (Korea, China, the United Kingdom, India, the Netherlands, France, Japan, Spain,...

Development of a New Cryptographic Construct Using Palmprint-Based Fuzzy Vault (2009)

Amioy Kumar, Ajay Kumar

The combination of cryptology and biometrics has emerged as promising component of information security. Despite the current popularity of palmprint biometric, there has not been any attempt to...

Development of a New Cryptographic Construct Using Palmprint-Based Fuzzy Vault (2009)

Amioy Kumar, Ajay Kumar

The combination of cryptology and biometrics has emerged as promising component of information security. Despite the current popularity of palmprint biometric, there has not been any attempt to...

Doppler-tuned Bragg Spectroscopy of Excited Levels in He-Like Uranium: a discussion of the uncertainty contributions (2009)

Trassinelli, Martino, Kumar, Ajay, Beyer, H.F., Indelicato, Paul, Märtin, Renate, Reuschl, Regina, ...

We present the uncertainty discussion of a recent experiment performed at the GSI storage ring ESR for the accurate energy measurement of the He-like uranium 1s2p3P2- 1s2s3S1 intra-shell transition....

Doppler-tuned Bragg Spectroscopy of Excited Levels in He-Like Uranium: a discussion of the uncertainty contributions (2009)

Trassinelli, Martino, Kumar, Ajay, Beyer, H.F., Indelicato, Paul, Märtin, Renate, Reuschl, Regina, ...

We present the uncertainty discussion of a recent experiment performed at the GSI storage ring ESR for the accurate energy measurement of the He-like uranium 1s2p3P2- 1s2s3S1 intra-shell transition....

MODELING NETWORK DECISIONS UNDER UNCERTAINTY: COUNTERVAILING EXTERNALITIES AND EMBEDDED OPTIONS (2008)

Robert J. Kauffman, Ajay Kumar

The analysis of externalities in technology-based networks continues to be of significant mana-gerial importance in e-commerce and traditional IS operations. Competitive strategy, economics and IS...

Observation of the 2p3/2 -> 2s1/2 intra-shell transition in He-like uranium (2008)

Trassinelli, Martino, Kumar, Ajay, Beyer, Heinrich, Indelicato, Paul, Märtin, Renate, Reuschl, Regina, ...

We present the first identification and energy measurement of the 1s2p 3P2 \to 1s2s 3S1 transition in He-like uranium. The experiment was performed at the internal gas-jet target of the ESR storage...

Tumor necrosis factor - α and transforming growth factor - β1 polymorphisms in bronchial asthma (2008)

Kumar, Ajay, Gupta, Vikas, Changotra, Harish, Sarin, BC, Sehajpal, PrabodhK

Background: Bronchial asthma is a complex genetic disorder regulated by the release of cytokines and inflammatory mediators. Tumor necrosis factor alpha (TNF-α) and transforming growth factor beta...

Phylogeography of mtDNA haplogroup R7 in the Indian peninsula (2008)

Chaubey, Gyaneshwer, Karmin, Monika, Metspalu, Ene, Metspalu, Mait, Selvi-Rani, Deepa, Singh, Vijay, ...

Abstract Background Human genetic diversity observed in Indian subcontinent is second only to that of Africa. This implies an early settlement and demographic growth soon after the first...

A CRITICAL ASSESSMENT OF THE CAPABILITIES OF FIVE MEASURES FOR ICT DEVELOPMENT (2008)

Robert J. Kauffman, Ajay Kumar

A variety of single-item composite indices for measurement of information and communication technologies (ICTs) at the country level are currently used to gauge the extent of technological...

BIOMETRIC RECOGNITION USING ENTROPY-BASED DISCRETIZATION (2008)

Ajay Kumar, David Zhang

The biometrics based recognition systems proposed in the literature have not yet exploited user-specific dependencies in the feature level representation. This paper suggests and investigates the...

MODELING NETWORK DECISIONS UNDER UNCERTAINTY: COUNTERVAILING EXTERNALITIES AND EMBEDDED OPTIONS (2008)

Robert J. Kauffman, Ajay Kumar

Abstract. The analysis of externalities in technology-based networks continues to be of significant managerial importance in e-commerce and traditional IS operations. Competitive strategy, economics...

Biometric Recognition using Feature Selection and Combination (2008)

Ajay Kumar, David Zhang

Abstract. Most of the prior work in biometric literature has only emphasized on the issue of feature extraction and classification. However, the critical issue of examining the usefulness of...

A New Method for Fingerprint Antispoofing using Pulse Oximetry (2008)

P. Venkata Reddy, Ajay Kumar, Tanvir Singh Mundra

Abstract- The deployment of fingerprint sensors is increasingly becoming common and has now gained high user acceptance. However, fingerprint sensors are susceptible to spoofing using artificial...

On Some Performance Indices for Biometric Identification System (2008)

Jay Bhatnagar, Ajay Kumar

Abstract. This paper investigates a new approach to formulate performance indices of biometric system using information theoretic models. The performance indices proposed here (unlike conventionally...

A Novel Approach to Improve Biometric Recognition Using Rank Level Fusion (2008)

Jay Bhatnagar, Ajay Kumar, Nipun Saggar

This paper proposes a novel approach for rank level fusion which gives improved performance gain verified by experimental results. In the absence of ranked features and instead of using the entire...

Ear Authentication using Log-Gabor Wavelets (2008)

Ajay Kumar, David Zhang

This paper investigates a new approach for human ear identification using holistic grey-level information. We employ Log-Gabor wavelets to extract the phase information, i.e. ear-codes, from the 1D...

Modeling Residence Time Distribution in a Twin-Screw Extruder as a Series of Ideal Steady-State Flow Reactors (2008)

Kumar, Ajay, Ganjyal, Girish M., Jones, David D., Hanna, Milford

Knowledge about and control of residence time distribution (RTD) is critical for determining optimal conditions in an extrusion process. In this paper, previously proposed models for RTD have been...

The World Bank Research Observer, vol. 18, no. 1 (Spring 2003), pp. 113--128 (2008)

Doi Wbro Lkg, Ken Gwilliam, Ajay Kumar

this article finds that they have not undermined fiscal flexibility. Moreover, they have improved the administration of road funding (in terms of execution capability) and its outputs (in terms of...

Computational identification of composite regulatory sites in 16s-rRNA gene promoters of Mycobacterium species (2008)

Surya Prakash Dwivedi, Ajay Kumar, Vishwa Mohan Katoch, Sanjay Mishra

The availability of completely sequenced genomes allow the use of computational techniques to investigate cis-acting sequences controlling transcription regulation associated with groups of...

Observation of the 2p3/2 -> 2s1/2 intra-shell transition in He-like uranium (2008)

Trassinelli, Martino, Kumar, Ajay, Beyer, Heinrich, Indelicato, Paul, Märtin, Renate, Reuschl, Regina, ...

We present the first identification and energy measurement of the 1s2p 3P2 → 1s2s 3S1 transition in He-like uranium. The experiment was performed at the internal gas-jet target of...

Observation of the 2p3/2 -> 2s1/2 intra-shell transition in He-like uranium (2008)

Trassinelli, Martino, Kumar, Ajay, Beyer, Heinrich, Indelicato, Paul, Märtin, Renate, Reuschl, Regina, ...

We present the first identification and energy measurement of the 1s2p 3P2 → 1s2s 3S1 transition in He-like uranium. The experiment was performed at the internal gas-jet target of...

Diffusion Tensor Imaging of Frontal Lobe in Autism Spectrum Disorder (2008)

Sundaram, Senthil K., Kumar, Ajay, Makki, Malek I., Behen, Michael E., Chugani, Harry T., Chugani, Diane C.

To investigate frontal lobe white matter in children with autism spectrum disorder (ASD), we performed diffusion tensor imaging (DTI) in 50 ASD children (mean age: 57.5 ± 29.2 months, 43 males) and...

FUTURE CHALLENGES AND OPPORTUNITIES IN AERODYNAMICS (2007)

Ajay Kumar, Jerry N. Hefner

Investments in aeronautics research and technology have declined substantially over the last decade, in part due to the perception that technologies required in aircraft design are fairly mature and...

Report Documentation Page (2007)

Form Approved Omb, Omb No, H. S. Mukunda, B. Sekar, M. H. Carpenter, J. Philip Drummond, ...

(Maximum 200 words) A computational study of a nonreacting high-speed mixing layer is performed. A higher order algorithm with sufficient grid points is used to resolve all relevant scales. In all...

Kruppel-like factor 15 is a regulator of cardiomyocyte hypertrophy. (2007)

Fisch, Sudeshna, Gray, Susan, Heymans, Stephane, Haldar, Saptarsi M., Wang, Baiqiu, Pfister, Otmar, ...

Cardiac hypertrophy is a common response to injury and hemodynamic stress and an important harbinger of heart failure and death. Herein, we identify the Kruppel-like factor 15 (KLF15) as an inhibitor...

Clustering and Classification (Time Series analysis) Based Congestion Control algorithm: Data Mining Approach (2007)

Manoj Devare, Ajay Kumar

The congestion controlling in the network is done by the various approaches. Here we have given a new approach to predict the congestion by historical data points. The time series analysis is done...

A non-parametric statistical analysis in the measurement of outdoor gamma exposure to the residents around Trombay (2007)

Kumar, Ajay, Singhal, R. K., Preetha, J., Rupali, K., Joshi, V. M., Hegde, A. G., ...

During this study, non-parametric statistical methods were used to validate the measured gamma dose rate with the calculated one, around Trombay. Portable dose rate digital gamma spectrometry system...

Synthesis of Some New 2-(3-Aryl-1-phenyl-4-pyrazolyl)-benzoxazoles Using Hypervalent Iodine Mediated Oxidative Cyclization of Schiff’s Bases (2006)

Om Prakash, Kamaljeet Pannu, Ajay Kumar

Ten new 2-(3-aryl-1-phenyl-4-pyrazolyl)benzoxazoles have been synthesized by oxidative intramolecular cyclization of the corresponding Schiff’s bases using iodobenzene diacetate in...

On Estimating Sample Size Requirements for Reliable Personal Identification (2006)

Jay Bhatnagar, Ajay Kumar

The goal of this paper is to determine bounds for estimating minimum sample size requirement for reliable biometric identification. A new approach for the reliable estimation of the minimum sample...

Personal verification using palmprint and hand geometry biometric (2003)

Ajay Kumar, Helen C. Shen, Anil K. Jain

Abstract. A new approach for the personal identification using hand images is presented. This paper attempts to improve the performance of palmprint-based verification system by integrating hand...

How Effective Are Second-Generation Road Funds? A Preliminary Appraisal (2003)

Gwilliam, Ken, Kumar, Ajay

Underfunded, inefficient road maintenance is a perennial problem in many developing economies. To address it, some countries have created “second‐generation” road funds that are financed...

Indo-Swiss Dialogue on Organic Agriculture. Report on the Indian Government Delegation Visit to Switzerland Mandated by the Planning Commission (2003)

Eyhorn, Frank, Kumar, Ajay, Sompal, Shri

Switzerland is a pioneering country for organic agriculture, and the Swiss organic sector is among the most successful and best organized ones of the World, now involving more than 10% of all farmers...

Defect detection in textured materials using gabor filters (2002)

Ajay Kumar, Senior Member

Abstract—This paper investigates various approaches for automated inspection of textured materials using Gabor wavelet features. A new supervised defect detection approach to detect a class of...

Defect detection in textured materials using optimized filters (2002)

Ajay Kumar, Senior Member

Abstract—The problem ofautomateddefect detection intextured materials is investigated. A new approach for defect detection using linear FIR filterswithoptimized energy separationis proposed....

A qualitative uncertainty principle for certain hypergroups (2001)

Kumar, Ajay

It is known that if the supports of a function f ∈ L1(Rn) and its Fourier transform have finite measure then f = 0 almost everywhere. We study generalizations of this property for certain classes...

ISABE-2001: Invited Lecture 4 (2001)

Ajay Kumar, J. Philip Drummond, Charles R. Mcclinton, James L. Hunt, Research In, Hypersonic Airbreathing, ...

The NASA Langley Research Center has been conducting research for over 4 decades to develop technology for an airbreathing-propelled vehicle. Several other organizations within the United States have...

Multimodal Trip Distribution: Structure and Application." Transportation Research Record 1446. Transportation Research Board (1995)

David M. Levinson, Ajay Kumar

published Transportation Research Record #1466 p124-131 This paper presents a multimodal trip distribution function estimated and validated for the metropolitan Washington region. In addition, a...

Integrating feedback into the transportation planning model. Transportation Research Record 1413 (1994)

David Levinson, Ajay Kumar

This research develops and applies a new structure for the transportation planning model that includes feedback between demand, assignment, and traffic control. New methods, combined with a renewed...

Temporal Variations on the Allocation of Time (1994)

Ajay Kumar, David Levinson

This study investigates the allocation of time and trip-making across timeof-day, day-of-week, and month-of-year, as well as over the past forty years. Some interesting findings result. People are...

CHAINED TRIPS IN MONTGOMERY COUNTY, MARYLAND submitted to ITE Journal (1994)

Ajay Kumar, David Levinson

This paper analyzes the 1987-88 Metropolitan Washington Council of Governments home interview survey to understand how work trips are combined into trip chains and to relate trip chaining with...

Operational Evidence of Changing Travel Patterns: (1994)

David M. Levinson, Ajay Kumar

This paper utilizes a traffic counts database covering a ten year period (1976-1985) to identify travel trends for Montgomery County, a suburb of Washington D.C. Generally, travel behavior is...

Biographical Sketch: (1993)

David M. Levinson, Ajay Kumar

Levinson and Kumar are transportation planners at the Montgomery County Planning Department, where they research and model travel behavior and transportation system usage. Both study...

Direct Simulation of High-Speed Mixing Layers (1992)

H. S. Mukunda, B. Sekar, M. H. Carpenter, J. Philip Drummond, Ajay Kumar

this paper are for subsonic flows. The incompressible shear-layer growth rate is expressed as

Specifying, Estimating, and Validating a New Trip Generation Model: A Case Study of Montgomery County, Maryland (1992)

Ajay Kumar, David Levinson

This paper discusses the development of an afternoon peak period trip generation model for both work and non-work trips. Three data sources are used in model development, a Household Travel Survey, a...

Rotor wake transport in turbomachine stators. (1971)

Kumar, Ajay.

Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Thesis. 1971. M.S.

Computational identification of composite regulatory sites in 16s-rRNA gene promoters of Mycobacterium species

Dwivedi, Neeraja, Dwivedi, Surya Prakash, Kumar, Ajay, Katoch, Vishwa Mohan, Mishra, Sanjay

The availability of completely sequenced genomes allow the use of computational techniques to investigate cis-acting sequences controlling transcription regulation associated with groups of...

Diffusion Tensor Imaging of Frontal Lobe in Autism Spectrum Disorder

Sundaram, Senthil K., Kumar, Ajay, Makki, Malek I., Behen, Michael E., Chugani, Harry T., Chugani, Diane C.

To investigate frontal lobe white matter in children with autism spectrum disorder (ASD), we performed diffusion tensor imaging (DTI) in 50 ASD children (mean age: 57.5 ± 29.2 months, 43 males) and...

Manual small incision cataract surgery under topical anesthesia with intracameral lignocaine: Study on pain evaluation and surgical outcome

Gupta, Sanjiv Kumar, Kumar, Ajay, Kumar, Deepak, Agarwal, Swati

The authors here describe manual small incision cataract surgery (MSICS) by using topical anesthesia with intracameral 0.5% lignocaine, which eliminates the hazards of local anesthesia, cuts down...

A molecular model for diacylglycerol acyltransferase from Mortierella ramanniana var. angulispora

Mishra, Sanjay, Dwivedi, Surya Prakash, Dwivedi, Neeraja, Kumar, Ajay, Rawat, Anil, Kamisaka, Yasushi

Acyl CoA diacylglycerol acyltransferase (DGAT, EC 2.3.120) is recognized as a key player of cellular diacylglycerol metabolism. It catalyzes the terminal, yet the committed step in triacylglycerol...

Activity, Travel, and the Allocation of Time

David Levinson, Ajay Kumar

This paper analyzes 1968 and 1987-88 metropolitan Washington, DC household travel surveys to understand the daily allocation of time among different activities of individuals classified by work...