International Journal of Signal Processing, Image Processing and Pattern Recognition, 2014
This paper focus on template matching approach for tracking object for remote sensing images. Suc... more This paper focus on template matching approach for tracking object for remote sensing images. Such types of image are source of information which is largely used for information extraction. In this paper, two approaches SAD (sum of absolute differences) and SSD (sum of squared differences), template matching for finding the object. Template matching has provided basics and advance functionality for the image processing, object recognition, features based template matching and many more in a variety of remotely sensed Images. A variety of algorithms exist for comparison of images and making the template matching process fast and reliable. This comparative study with implementation approach focus on the core basics of the template matching in remote sensing images. The contribution of this paper is that, help to find the GCP (ground control point). These GCP can be generated in the form of template and these templates can run on the image and temporal image to find the correct location.
Journal of Control, Automation and Electrical Systems, 2014
Trajectory corners generated while generation of a curve from curved fragments using micro-positi... more Trajectory corners generated while generation of a curve from curved fragments using micro-positioning X −Y stages poses serious limitations on their use for smooth motion trajectory applications. In this research, a controller along with its control algorithm is presented which uses a penalized curve fitting-based approach to steer low cost/ low resolution stepper motor driven stage motion so that the cornerization in the trajectory is minimized without any serious degradation to accuracy. The control algorithm is initially implemented in MATLAB to check its fidelity. Subsequently, a complete set up involving ARM-based controller, motor drivers and precision positioning stages is built in order to facilitate the working of the algorithm in real time. The set up is tested for CNC machining application, where material removal takes place in a precise manner according to the trajectory of X −Y positioning stages. A good match was found between simulation and experimental results in trajectory generation. It was further observed that the use of penalized spline trajectory reduces the cornerization in trajectory generation.
Microorganisms in Sustainable Agriculture and Biotechnology, 2011
Bacillus species are ubiquitous bacteria in agricultural soils and possess many traits that make ... more Bacillus species are ubiquitous bacteria in agricultural soils and possess many traits that make them well suited as biocontrol agents of various soil borne pathogens. They are aerobic, Gram-positive bacteria with remarkable ability to produce highly resistant ...
The advantage of Charge Extraction by Linearly Increasing Voltage (CELIV) to evaluate bulk conduc... more The advantage of Charge Extraction by Linearly Increasing Voltage (CELIV) to evaluate bulk conductivity and drift mobility (not influenced by contact barriers of sandwich sample) of equilibrium carriers bypasses problems associated with conventional techniques. Ambipolar CELIV transients however do present problems because it is hard to distinguish holes from electrons. In this letter, a blocking electrode is used to extract mobility of only holes in optimized ambipolar alkylthiophene: [6,6]-phenyl-C 61-butyric acid methyl ester [PCBM] bulk heterojunction based solar cells which has proved to be difficult in the past. Universality of this method has been demonstrated by using different p-type polymer:PCBM systems for the study. Necessity of balance of mobility of electron and hole has been demonstrated for high fill factors and consequently higher efficiency devices.
Nanoscale morphology has been shown to be a critical parameter governing charge transport propert... more Nanoscale morphology has been shown to be a critical parameter governing charge transport properties of polymer bulk heterojunction (BHJ) solar cells. Recent results on vertical phase separation have intensified the research on 3D morphology control. In this paper, we intend to modify the distribution of donors and acceptors in a classical BHJ polymer solar cell by making the active layer richer in donors and acceptors near the anode and cathode respectively. Here, we chose [6,6]-phenyl-C 61-butyric acid methyl ester (PCBM) to be the acceptor material to be thermally deposited on top of [poly(3-hexylthiophene)] P3HT: the PCBM active layer to achieve a vertical composition gradient in the BHJ structure. Here we report on a solar cell with enhanced power conversion efficiency of 4.5% which can be directly correlated with the decrease in series resistance of the device.
A potential antagonist, Bacillus sp. strain A(5) F was isolated from soybean rhizosphere followin... more A potential antagonist, Bacillus sp. strain A(5) F was isolated from soybean rhizosphere following in vitro dual plate screening. The bacterium displayed strong inhibitory activity in vitro against soybean stem rot pathogen, Sclerotinia sclerotiorum. The culture supernatant of strain A(5) F completely suppressed the mycelial growth of the pathogen, indicating that suppression was due to the presence of antifungal compounds in the culture filtrate. The culture filtrate also suppressed other phytopathogenic fungi including Fusarium oxysporum and Macrophomina phaseolina, in vitro suggesting a broad spectrum antagonistic activity against fungal pathogens. Chemical extraction followed by chromatographic analysis resulted in two antifungal fractions. The high resolution-electron spin ionization-mass spectrometry (HR-ESI-MS) and Nuclear Magnetic Resonance (1D and 2D(1) H) spectra of these antifungal fractions revealed the presence of antifungal compounds, one of which showed similarity to bacillomycin D.
Morphology is a crucially important factor determining the efficiency of photocurrent generation ... more Morphology is a crucially important factor determining the efficiency of photocurrent generation in bulk heterojunction polymer solar cells. Morphology, which depends on the characteristics of the polymers as well as on the conditions of phase separation, affects the performance of solar cells by influencing the rate of exciton dissociation and the efficiency of charge carrier transport. Using Monte Carlo simulations, we investigate the effects of annealing time on the morphology of phase separation and charge transfer behavior inside the active layers of polymer solar cells. We find that a suitably defined correlation distance is an effective parameter that quantitatively characterizes different morphologies and can be used to establish a direct link with transmission electron microscopy images of real polymer solar cells. Optimal morphologies have been investigated, showing results that are consistent with experimental data.
International Journal of Signal Processing, Image Processing and Pattern Recognition, 2014
This paper focus on template matching approach for tracking object for remote sensing images. Suc... more This paper focus on template matching approach for tracking object for remote sensing images. Such types of image are source of information which is largely used for information extraction. In this paper, two approaches SAD (sum of absolute differences) and SSD (sum of squared differences), template matching for finding the object. Template matching has provided basics and advance functionality for the image processing, object recognition, features based template matching and many more in a variety of remotely sensed Images. A variety of algorithms exist for comparison of images and making the template matching process fast and reliable. This comparative study with implementation approach focus on the core basics of the template matching in remote sensing images. The contribution of this paper is that, help to find the GCP (ground control point). These GCP can be generated in the form of template and these templates can run on the image and temporal image to find the correct location.
Journal of Control, Automation and Electrical Systems, 2014
Trajectory corners generated while generation of a curve from curved fragments using micro-positi... more Trajectory corners generated while generation of a curve from curved fragments using micro-positioning X −Y stages poses serious limitations on their use for smooth motion trajectory applications. In this research, a controller along with its control algorithm is presented which uses a penalized curve fitting-based approach to steer low cost/ low resolution stepper motor driven stage motion so that the cornerization in the trajectory is minimized without any serious degradation to accuracy. The control algorithm is initially implemented in MATLAB to check its fidelity. Subsequently, a complete set up involving ARM-based controller, motor drivers and precision positioning stages is built in order to facilitate the working of the algorithm in real time. The set up is tested for CNC machining application, where material removal takes place in a precise manner according to the trajectory of X −Y positioning stages. A good match was found between simulation and experimental results in trajectory generation. It was further observed that the use of penalized spline trajectory reduces the cornerization in trajectory generation.
Microorganisms in Sustainable Agriculture and Biotechnology, 2011
Bacillus species are ubiquitous bacteria in agricultural soils and possess many traits that make ... more Bacillus species are ubiquitous bacteria in agricultural soils and possess many traits that make them well suited as biocontrol agents of various soil borne pathogens. They are aerobic, Gram-positive bacteria with remarkable ability to produce highly resistant ...
The advantage of Charge Extraction by Linearly Increasing Voltage (CELIV) to evaluate bulk conduc... more The advantage of Charge Extraction by Linearly Increasing Voltage (CELIV) to evaluate bulk conductivity and drift mobility (not influenced by contact barriers of sandwich sample) of equilibrium carriers bypasses problems associated with conventional techniques. Ambipolar CELIV transients however do present problems because it is hard to distinguish holes from electrons. In this letter, a blocking electrode is used to extract mobility of only holes in optimized ambipolar alkylthiophene: [6,6]-phenyl-C 61-butyric acid methyl ester [PCBM] bulk heterojunction based solar cells which has proved to be difficult in the past. Universality of this method has been demonstrated by using different p-type polymer:PCBM systems for the study. Necessity of balance of mobility of electron and hole has been demonstrated for high fill factors and consequently higher efficiency devices.
Nanoscale morphology has been shown to be a critical parameter governing charge transport propert... more Nanoscale morphology has been shown to be a critical parameter governing charge transport properties of polymer bulk heterojunction (BHJ) solar cells. Recent results on vertical phase separation have intensified the research on 3D morphology control. In this paper, we intend to modify the distribution of donors and acceptors in a classical BHJ polymer solar cell by making the active layer richer in donors and acceptors near the anode and cathode respectively. Here, we chose [6,6]-phenyl-C 61-butyric acid methyl ester (PCBM) to be the acceptor material to be thermally deposited on top of [poly(3-hexylthiophene)] P3HT: the PCBM active layer to achieve a vertical composition gradient in the BHJ structure. Here we report on a solar cell with enhanced power conversion efficiency of 4.5% which can be directly correlated with the decrease in series resistance of the device.
A potential antagonist, Bacillus sp. strain A(5) F was isolated from soybean rhizosphere followin... more A potential antagonist, Bacillus sp. strain A(5) F was isolated from soybean rhizosphere following in vitro dual plate screening. The bacterium displayed strong inhibitory activity in vitro against soybean stem rot pathogen, Sclerotinia sclerotiorum. The culture supernatant of strain A(5) F completely suppressed the mycelial growth of the pathogen, indicating that suppression was due to the presence of antifungal compounds in the culture filtrate. The culture filtrate also suppressed other phytopathogenic fungi including Fusarium oxysporum and Macrophomina phaseolina, in vitro suggesting a broad spectrum antagonistic activity against fungal pathogens. Chemical extraction followed by chromatographic analysis resulted in two antifungal fractions. The high resolution-electron spin ionization-mass spectrometry (HR-ESI-MS) and Nuclear Magnetic Resonance (1D and 2D(1) H) spectra of these antifungal fractions revealed the presence of antifungal compounds, one of which showed similarity to bacillomycin D.
Morphology is a crucially important factor determining the efficiency of photocurrent generation ... more Morphology is a crucially important factor determining the efficiency of photocurrent generation in bulk heterojunction polymer solar cells. Morphology, which depends on the characteristics of the polymers as well as on the conditions of phase separation, affects the performance of solar cells by influencing the rate of exciton dissociation and the efficiency of charge carrier transport. Using Monte Carlo simulations, we investigate the effects of annealing time on the morphology of phase separation and charge transfer behavior inside the active layers of polymer solar cells. We find that a suitably defined correlation distance is an effective parameter that quantitatively characterizes different morphologies and can be used to establish a direct link with transmission electron microscopy images of real polymer solar cells. Optimal morphologies have been investigated, showing results that are consistent with experimental data.
Uploads
Papers by Ankit Kumar