Mohammad Azeem - Academia.edu (original) (raw)
Papers by Mohammad Azeem
Advanced Composites in Aerospace Engineering Applications
Improving child health and decreasing child mortality still remains a challenge to the government... more Improving child health and decreasing child mortality still remains a challenge to the government of Afghanistan. According to UNICEF, Afghanistan ranked 16th among the countries with high child mortality (2015). Kandahar province located in the southern part of Afghanistan also suffers from poor child health. Inadequacy of maternal education, lack of health awareness, and intricate cultural and social practices in the province shapes the healthrelated behavior of mothers. The result of the study indicates that maternal health awareness is a significant predictor of health-supportive behaviors regardless of geographic location. Mothers with high health awareness were more likely to use contraceptives, made frequent clinic visits during pregnancy, preferred hospital births, received immunization for their children in proper time, complied with World Health Organization’s breastfeeding guidelines for their children, and avoided utilization of spiritual and herbal remedies for their il...
Biocomposite and Synthetic Composites for Automotive Applications
Materials
In a number of circumstances, the Kachanov–Rabotnov isotropic creep damage constitutive model has... more In a number of circumstances, the Kachanov–Rabotnov isotropic creep damage constitutive model has been utilized to assess the creep deformation of high-temperature components. Secondary creep behavior is usually studied using analytical methods, whereas tertiary creep damage constants are determined by the combination of experiments and numerical optimization. To obtain the tertiary creep damage constants, these methods necessitate extensive computational effort and time to determine the tertiary creep damage constants. In this study, a curve-fitting technique was proposed for applying the Kachanov–Rabotnov model into the built-in Norton–Bailey model in Abaqus. It extrapolates the creep behaviour by fitting the Kachanov–Rabotnov model to the limited creep data obtained from the Omega-Norton–Bailey regression model and then simulates beyond the available data points. Through the Omega creep model, several creep strain rates for SS-316 were calculated using API-579/ASME FFS-1 standard...
Solid State Phenomena
In the material’s creep failure analysis, the difficulty of assessing the applied thermo-mechanic... more In the material’s creep failure analysis, the difficulty of assessing the applied thermo-mechanical boundary conditions makes it critically important. Numerous creep laws have been established over the years to predict the creep deformation, damage evolution and rupture of the materials subjected to creep phenomena. The omega model developed by the American Petroleum Institute and Material Properties Council is one of the most commonly used creep material models for numerical analysis over the years. It is good in defining the fitness of mechanical equipment for service engineering evaluation to ensure the reliable service life of the equipment. The Omega model, however, is not readily accessible and specifically incorporated for creep evaluation in FEA software codes and creep data is always scarce for the complete analysis. Therefore, extrapolation of creep behavior was performed by fitting various types of creep models with a limited amount of creep data and then simulating them,...
Journal of Materials Research and Technology
IOP Conference Series: Materials Science and Engineering
The latest emerging technologies for road safety focuses on finding ways to avoid or minimize roa... more The latest emerging technologies for road safety focuses on finding ways to avoid or minimize road accidents to road users with special concern by reducing the causes of road accidents. As depicted by data of certain advanced countries like Korea, Malaysia, Australia, United States of America, the major number of accidents causing death was very high during a previous couple of years due to the increased number of vehicles on road, which is getting unmanageable. However, Urethane Rollers invented in Korea has served to redirect the uncontrolled moving vehicles and to balance it again causing reduction of accidents. In this paper, a study is carried out to explain its need in India perspective for using "Rolling Barriers" (RB) which has minimized the accidents rate in the above-mentioned countries. Rolling barriers provides cushioning effect during a crash, reduces the high-speed effect, constitutes material resilience with stiffness and have other performance characteristics that reduce injury to occupants and damage to the vehicle. The roller barriers are extremely effective and its implementation has given signified results in reducing the road accidents at flat roads, curved roads sections, ramps, medians, entrances/exit ramps in the parking garage etc. steep curved roads as in the mountainous terrain.
The International Annals of Medicine
Objective: To compare the outcome of early blood transfusion i.e. within 6hrs. (hours) of admissi... more Objective: To compare the outcome of early blood transfusion i.e. within 6hrs. (hours) of admission VS late blood transfusion (after 6 hrs.) in Puerperal septic shock patients with anemia. Study design: A prospective quasi-experimental controlled trial in ICU(intensive care unit) of Lady Willingdon Hospital, a tertiary care hospital of Obstetrics and Gynecology from Aug2013 to July 2016. Population: Patients admitted with septic shock and anemia during puerperium in ICU. Methods: 74 patients were included in the study by purposive sampling technique. Exclusion criteria were an irreversible shock, chronic lung, and heart disease or those requiring surgical intervention. Surviving sepsis campaign guidelines were followed for the management of these patients. Effect of blood transfusion on the recovery of these subjects was studied. The study group consisted of 43 patients in which blood was transfused within 6hrs of admission. Control group had 31 patients in whom blood could not be transfused within this period. The demographic features and outcome of both groups were recorded and entered on spss20 statistical package. Results: The time of recovery from hypotension, tachycardia, pulmonary edema, ventilator and cardiac support was significantly shorter in the study group compared to the control. A lesser number of blood transfusions was required to treat anemia in the study group. Maternal mortality was less in the study group (23.25%) as compared to control group (48.39%) with an odds ratio of decrease in maternal mortality of 0.323(.119-.877). Conclusion: Early blood transfusion shortens the time of recovery and decreases maternal mortality and morbidity in Puerperal septic shock patients with anemia.
World journal of clinical cases, Jan 16, 2017
To estimate the pharyngeal carriage rate of Neisseria meningitidis (N. meningitidis), Streptococc... more To estimate the pharyngeal carriage rate of Neisseria meningitidis (N. meningitidis), Streptococcus pneumoniae (S. pneumoniae) and Staphylococcus aureus (S. aureus) among Australian Hajj pilgrims. In 2014, surveillance was conducted in two phases among Australian Hajj pilgrims: The first phase during Hajj in Mina, and the second phase soon after returning home to Australia. Nasopharyngeal or oropharyngeal swabs were taken from participants then tested, firstly by nucleic acid testing, and also by standard culture. Of 183 participants recruited in the first phase, 26 (14.2%) tested positive for S. pneumoniae; 4 had received pneumococcal conjugate vaccine (PCV13). Only one tested positive for N. meningitidis (W). Of 93 2(nd) phase samples cultured, 17 (18.3%) grew S. aureus, all methicillin sensitive, 2 (2.2%) grew N. meningitidis (on subculture; one serotype B, one negative), and 1 (1%), from an unvaccinated pilgrim, grew S. pneumoniae. Relatively high carriage of S. pneumoniae and l...
As the features from the traditional Local Binary patterns (LBP) and Local Directional Patterns (... more As the features from the traditional Local Binary patterns (LBP) and Local Directional Patterns (LDP) are found to be ineffective for face recognition, we have proposed a new approach derived on the basis of Information sets whereby the loss of information that occurs during the binarization is eliminated. The information sets expand the scope of fuzzy sets by connecting the attribute and the corresponding membership function value as a product. Since face is having smooth texture in a limited area, the extracted features must be highly discernible. To limit the number of features, we consider only the non overlapping windows. By the application of the information set theory we can reduce the number of feature of an image. The derived features are shown to work fairly well over eigenface, fisherface and LBP methods.
Postgraduate Medicine, 2016
Vaccination against serious bacterial infections is recommended for Hajj pilgrims. Although the u... more Vaccination against serious bacterial infections is recommended for Hajj pilgrims. Although the uptake of mandatory vaccines among Hajj pilgrims is acceptable, the uptake of other recommended vaccines remains suboptimal. In this study, we have explored the barriers to vaccination against serious bacterial infections among Australian Hajj pilgrims. Travellers aged 18 years and older planning to attend Hajj in the years 2014 and 2015 were surveyed at the immunization clinic of the Children's Hospital at Westmead, Sydney, Australia. A questionnaire-based survey was conducted to explore pilgrims' vaccination histories for their previous visits to Mecca, the reasons for non-receipt of vaccination, and to assess knowledge about the transmission of infections. A total of 300 participants aged 18-76 (median 41) years completed the survey. Most (233 [77.7%]) were born outside Australia. Overall, 113 (37.7%) had performed pilgrimage in the past; 19 (16.8%) of them reported receiving pneumococcal vaccine and 16 (14.1%) diphtheria, tetanus and pertussis (DTP) vaccine. Lack of awareness about the availability of the vaccines was the main reason for non-receipt of pneumococcal and DTP vaccines (respectively 41.1% and 44.7%). Most pilgrims (266 [88.7%]) believed that travel vaccines are necessary before embarking on a journey; however, some expressed concerns about adverse reactions (156 [52.0%]), cost (114 [38.0%]), and permissibility of the vaccine according to their religion (6 [2.0%]). Respectively, 187 (62.3%), 145 (48.3%) and 86 (28.7%) respondents did not correctly know how meningococcal and pneumococcal diseases and pertussis transmit. Nevertheless, most (256 [85.3%]) indicated that they trust their family doctor for medical information and most (203 [67.7%]) preferred to receive the medical information in English. The uptake of recommended vaccines against serious bacterial infections among Australian Hajj pilgrims is low. Lack of awareness about the availability of vaccines, misperceptions surrounding the safety of vaccines and high cost are key barriers of uptake.
International Journal of Artificial Intelligence & Applications, 2012
This paper presents a novel fuzzy logic based Adaptive Super-twisting Sliding Mode Controller for... more This paper presents a novel fuzzy logic based Adaptive Super-twisting Sliding Mode Controller for the control of dynamic uncertain systems. The proposed controller combines the advantages of Second order Sliding Mode Control, Fuzzy Logic Control and Adaptive Control. The reaching conditions, stability and robustness of the system with the proposed controller are guaranteed. In addition, the proposed controller is well suited for simple design and implementation. The effectiveness of the proposed controller over the first order Sliding Mode Fuzzy Logic controller is illustrated by Matlab based simulations performed on a DC-DC Buck converter. Based on this comparison, the proposed controller is shown to obtain the desired transient response without causing chattering and error under steady-state conditions. The proposed controller is able to give robust performance in terms of rejection to input voltage variations and load variations.
Present study is based on the comparison between the existing model developed by Forrestal for me... more Present study is based on the comparison between the existing model developed by Forrestal for medium velocity impact and the Predicted model used by us for low velocity impact. The model suggested by Forrestal et al.[3,4] is for medium velocity impact (generally varying from 300-1200 m/s) for thick aluminum plates (around 25-27 mm). When this model is tested for low velocity impact (10-100 m/s) on thin aluminum plates (0.5-2 mm), the model fails to fit the experimental data points of Ansari et al.[8],which implies that the model is applicable for high velocity impact on thick plates only. In this study we have modified this model of Forrestal et al.[3,4](by minor adjustment) for low velocity impact on thin aluminum plates and found excellent agreement with the experimental data (Ansari et al.). We have plotted the impact velocity curve with residual velocity and velocity drop and plate thickness curve varying against ballistic limit velocity which is the basis for comparison in thi...
In this study dual-nose projectile was prepared by two blunt noses along the length of projectile... more In this study dual-nose projectile was prepared by two blunt noses along the length of projectile and then made to impact on aluminium plates of 0.82 mm thickness to observe its deformation behavior. The diameter of first blunt nose was 6.4 mm while second blunt nose was on the shank of the projectile having 12.8 mm diameter. Impact on target plate by double nose projectile was made by gas gun experimentally and then verified numerically on Abaqus FEM code. Mesh convergence study was done to choose the correct elements size in the impact area. It was observed that blunt-blunt projectile perforates the target by producing one plug and one ring while speed of the first plug was higher than the speed of the projectile. Blunt-blunt projectile takes more time to perforate the target than single blunt projectile. Experimental and numerical value agrees to each other.
Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 1994
The SIR-C/X-SAR imaging radar took its first flight on the Space Shuttle Endeavour in April 1994.... more The SIR-C/X-SAR imaging radar took its first flight on the Space Shuttle Endeavour in April 1994. This multi-frequency radar has fully polarimetric capability at L and C-band, and a single polarization at X-band (X-SAR). Calibration of polarimetric L and C-band data for all the differtnt modes SIR-C offers is an especially complicated problem The solution involves extensive analysis of pre-flight test data to come up with a model of the system, analysis of in-flight test data to determine the actual antenna pattern and gains of the system during operation, and analysis of data from over ten calibration sites distributed around the SIR-C/X-SAR orbit track. The SIR-C mission is the first time a multi-frequency larimetric imaging radar employing phased array antenna has k n flown in space. The effort put into the calibration of SIR-C data products has been considerable and is also unique in that this is the first time anyone has attempted to calibrate a spaceborne radar This work was performed by the Jet Propulsion Laboratory, California Institute of Technology, under contract from the National Amnautics and Space A d " t i o n .
Middle East Journal of Scientific Research
The present manuscript designed to collect and enlist the knowledge about the medicinal plant spe... more The present manuscript designed to collect and enlist the knowledge about the medicinal plant species used to treat various diseases by the local inhabitants of district Bahawalnagar, Punjab, Pakistan. This is the very first study of its kind as no one has reported about the vegetation and medicinal flora of this area in recent years. A total of 56 plant species belonging to 38 families have been recorded and local herbal use of the plant species was gathered by using questionnaires and personal verbal conversations with the herbalists in the area. Out of five Tehsils, the people in Fort-Abbas area are more dependent on the folk medicines as compared to others areas of the district. The reason for the fact is due to the high poverty ratio and less approach to basic life necessities in that area. The current status of the flora is threatened by the poor management, fast urbanization, poor land utilizations, over utilization of the flora for the grazers by local communities which is c...
Infectious Disorders - Drug Targets, 2014
Diagnosis of seizure requires visual inspection of EEG, however for large volume of EEG it requir... more Diagnosis of seizure requires visual inspection of EEG, however for large volume of EEG it requires a lot of time and work. Thus, this work is aimed towards the automatic seizure detection with greater accuracy in less time and burden. As EEG signals are non-stationary, conventional method of frequency analysis is not highly successful in classification. This paper deals with a method of automatic analysis of EEG signals using wavelet transform, principle component analysis (PCA) and classification using support vector machine (SVM) technique. Its novelty lies in its simple statistical feature based formulae which makes the algorithm fast and accurate. This proposed technique can classify normal, interictal and ictal EEG with 100% accuracy, sensitivity & specificity, hence can be used to design expert system for seizure diagnosis purpose in various hospitals.
Proceedings of the IEEE INDICON 2004. First India Annual Conference, 2004., 2004
Page 1. 294 IEEB INDlA ANNUAL CONFERENCE 2W4, "DICON 200... more Page 1. 294 IEEB INDlA ANNUAL CONFERENCE 2W4, "DICON 2004 Effect 'of Normalization of Membership Functions in Prernise Region of Generalized Adaptive Neuro-Fuzzy Inference System , ' Masood Anzar and Mohammad Fade hem . . . . ' ...
Advanced Composites in Aerospace Engineering Applications
Improving child health and decreasing child mortality still remains a challenge to the government... more Improving child health and decreasing child mortality still remains a challenge to the government of Afghanistan. According to UNICEF, Afghanistan ranked 16th among the countries with high child mortality (2015). Kandahar province located in the southern part of Afghanistan also suffers from poor child health. Inadequacy of maternal education, lack of health awareness, and intricate cultural and social practices in the province shapes the healthrelated behavior of mothers. The result of the study indicates that maternal health awareness is a significant predictor of health-supportive behaviors regardless of geographic location. Mothers with high health awareness were more likely to use contraceptives, made frequent clinic visits during pregnancy, preferred hospital births, received immunization for their children in proper time, complied with World Health Organization’s breastfeeding guidelines for their children, and avoided utilization of spiritual and herbal remedies for their il...
Biocomposite and Synthetic Composites for Automotive Applications
Materials
In a number of circumstances, the Kachanov–Rabotnov isotropic creep damage constitutive model has... more In a number of circumstances, the Kachanov–Rabotnov isotropic creep damage constitutive model has been utilized to assess the creep deformation of high-temperature components. Secondary creep behavior is usually studied using analytical methods, whereas tertiary creep damage constants are determined by the combination of experiments and numerical optimization. To obtain the tertiary creep damage constants, these methods necessitate extensive computational effort and time to determine the tertiary creep damage constants. In this study, a curve-fitting technique was proposed for applying the Kachanov–Rabotnov model into the built-in Norton–Bailey model in Abaqus. It extrapolates the creep behaviour by fitting the Kachanov–Rabotnov model to the limited creep data obtained from the Omega-Norton–Bailey regression model and then simulates beyond the available data points. Through the Omega creep model, several creep strain rates for SS-316 were calculated using API-579/ASME FFS-1 standard...
Solid State Phenomena
In the material’s creep failure analysis, the difficulty of assessing the applied thermo-mechanic... more In the material’s creep failure analysis, the difficulty of assessing the applied thermo-mechanical boundary conditions makes it critically important. Numerous creep laws have been established over the years to predict the creep deformation, damage evolution and rupture of the materials subjected to creep phenomena. The omega model developed by the American Petroleum Institute and Material Properties Council is one of the most commonly used creep material models for numerical analysis over the years. It is good in defining the fitness of mechanical equipment for service engineering evaluation to ensure the reliable service life of the equipment. The Omega model, however, is not readily accessible and specifically incorporated for creep evaluation in FEA software codes and creep data is always scarce for the complete analysis. Therefore, extrapolation of creep behavior was performed by fitting various types of creep models with a limited amount of creep data and then simulating them,...
Journal of Materials Research and Technology
IOP Conference Series: Materials Science and Engineering
The latest emerging technologies for road safety focuses on finding ways to avoid or minimize roa... more The latest emerging technologies for road safety focuses on finding ways to avoid or minimize road accidents to road users with special concern by reducing the causes of road accidents. As depicted by data of certain advanced countries like Korea, Malaysia, Australia, United States of America, the major number of accidents causing death was very high during a previous couple of years due to the increased number of vehicles on road, which is getting unmanageable. However, Urethane Rollers invented in Korea has served to redirect the uncontrolled moving vehicles and to balance it again causing reduction of accidents. In this paper, a study is carried out to explain its need in India perspective for using "Rolling Barriers" (RB) which has minimized the accidents rate in the above-mentioned countries. Rolling barriers provides cushioning effect during a crash, reduces the high-speed effect, constitutes material resilience with stiffness and have other performance characteristics that reduce injury to occupants and damage to the vehicle. The roller barriers are extremely effective and its implementation has given signified results in reducing the road accidents at flat roads, curved roads sections, ramps, medians, entrances/exit ramps in the parking garage etc. steep curved roads as in the mountainous terrain.
The International Annals of Medicine
Objective: To compare the outcome of early blood transfusion i.e. within 6hrs. (hours) of admissi... more Objective: To compare the outcome of early blood transfusion i.e. within 6hrs. (hours) of admission VS late blood transfusion (after 6 hrs.) in Puerperal septic shock patients with anemia. Study design: A prospective quasi-experimental controlled trial in ICU(intensive care unit) of Lady Willingdon Hospital, a tertiary care hospital of Obstetrics and Gynecology from Aug2013 to July 2016. Population: Patients admitted with septic shock and anemia during puerperium in ICU. Methods: 74 patients were included in the study by purposive sampling technique. Exclusion criteria were an irreversible shock, chronic lung, and heart disease or those requiring surgical intervention. Surviving sepsis campaign guidelines were followed for the management of these patients. Effect of blood transfusion on the recovery of these subjects was studied. The study group consisted of 43 patients in which blood was transfused within 6hrs of admission. Control group had 31 patients in whom blood could not be transfused within this period. The demographic features and outcome of both groups were recorded and entered on spss20 statistical package. Results: The time of recovery from hypotension, tachycardia, pulmonary edema, ventilator and cardiac support was significantly shorter in the study group compared to the control. A lesser number of blood transfusions was required to treat anemia in the study group. Maternal mortality was less in the study group (23.25%) as compared to control group (48.39%) with an odds ratio of decrease in maternal mortality of 0.323(.119-.877). Conclusion: Early blood transfusion shortens the time of recovery and decreases maternal mortality and morbidity in Puerperal septic shock patients with anemia.
World journal of clinical cases, Jan 16, 2017
To estimate the pharyngeal carriage rate of Neisseria meningitidis (N. meningitidis), Streptococc... more To estimate the pharyngeal carriage rate of Neisseria meningitidis (N. meningitidis), Streptococcus pneumoniae (S. pneumoniae) and Staphylococcus aureus (S. aureus) among Australian Hajj pilgrims. In 2014, surveillance was conducted in two phases among Australian Hajj pilgrims: The first phase during Hajj in Mina, and the second phase soon after returning home to Australia. Nasopharyngeal or oropharyngeal swabs were taken from participants then tested, firstly by nucleic acid testing, and also by standard culture. Of 183 participants recruited in the first phase, 26 (14.2%) tested positive for S. pneumoniae; 4 had received pneumococcal conjugate vaccine (PCV13). Only one tested positive for N. meningitidis (W). Of 93 2(nd) phase samples cultured, 17 (18.3%) grew S. aureus, all methicillin sensitive, 2 (2.2%) grew N. meningitidis (on subculture; one serotype B, one negative), and 1 (1%), from an unvaccinated pilgrim, grew S. pneumoniae. Relatively high carriage of S. pneumoniae and l...
As the features from the traditional Local Binary patterns (LBP) and Local Directional Patterns (... more As the features from the traditional Local Binary patterns (LBP) and Local Directional Patterns (LDP) are found to be ineffective for face recognition, we have proposed a new approach derived on the basis of Information sets whereby the loss of information that occurs during the binarization is eliminated. The information sets expand the scope of fuzzy sets by connecting the attribute and the corresponding membership function value as a product. Since face is having smooth texture in a limited area, the extracted features must be highly discernible. To limit the number of features, we consider only the non overlapping windows. By the application of the information set theory we can reduce the number of feature of an image. The derived features are shown to work fairly well over eigenface, fisherface and LBP methods.
Postgraduate Medicine, 2016
Vaccination against serious bacterial infections is recommended for Hajj pilgrims. Although the u... more Vaccination against serious bacterial infections is recommended for Hajj pilgrims. Although the uptake of mandatory vaccines among Hajj pilgrims is acceptable, the uptake of other recommended vaccines remains suboptimal. In this study, we have explored the barriers to vaccination against serious bacterial infections among Australian Hajj pilgrims. Travellers aged 18 years and older planning to attend Hajj in the years 2014 and 2015 were surveyed at the immunization clinic of the Children's Hospital at Westmead, Sydney, Australia. A questionnaire-based survey was conducted to explore pilgrims' vaccination histories for their previous visits to Mecca, the reasons for non-receipt of vaccination, and to assess knowledge about the transmission of infections. A total of 300 participants aged 18-76 (median 41) years completed the survey. Most (233 [77.7%]) were born outside Australia. Overall, 113 (37.7%) had performed pilgrimage in the past; 19 (16.8%) of them reported receiving pneumococcal vaccine and 16 (14.1%) diphtheria, tetanus and pertussis (DTP) vaccine. Lack of awareness about the availability of the vaccines was the main reason for non-receipt of pneumococcal and DTP vaccines (respectively 41.1% and 44.7%). Most pilgrims (266 [88.7%]) believed that travel vaccines are necessary before embarking on a journey; however, some expressed concerns about adverse reactions (156 [52.0%]), cost (114 [38.0%]), and permissibility of the vaccine according to their religion (6 [2.0%]). Respectively, 187 (62.3%), 145 (48.3%) and 86 (28.7%) respondents did not correctly know how meningococcal and pneumococcal diseases and pertussis transmit. Nevertheless, most (256 [85.3%]) indicated that they trust their family doctor for medical information and most (203 [67.7%]) preferred to receive the medical information in English. The uptake of recommended vaccines against serious bacterial infections among Australian Hajj pilgrims is low. Lack of awareness about the availability of vaccines, misperceptions surrounding the safety of vaccines and high cost are key barriers of uptake.
International Journal of Artificial Intelligence & Applications, 2012
This paper presents a novel fuzzy logic based Adaptive Super-twisting Sliding Mode Controller for... more This paper presents a novel fuzzy logic based Adaptive Super-twisting Sliding Mode Controller for the control of dynamic uncertain systems. The proposed controller combines the advantages of Second order Sliding Mode Control, Fuzzy Logic Control and Adaptive Control. The reaching conditions, stability and robustness of the system with the proposed controller are guaranteed. In addition, the proposed controller is well suited for simple design and implementation. The effectiveness of the proposed controller over the first order Sliding Mode Fuzzy Logic controller is illustrated by Matlab based simulations performed on a DC-DC Buck converter. Based on this comparison, the proposed controller is shown to obtain the desired transient response without causing chattering and error under steady-state conditions. The proposed controller is able to give robust performance in terms of rejection to input voltage variations and load variations.
Present study is based on the comparison between the existing model developed by Forrestal for me... more Present study is based on the comparison between the existing model developed by Forrestal for medium velocity impact and the Predicted model used by us for low velocity impact. The model suggested by Forrestal et al.[3,4] is for medium velocity impact (generally varying from 300-1200 m/s) for thick aluminum plates (around 25-27 mm). When this model is tested for low velocity impact (10-100 m/s) on thin aluminum plates (0.5-2 mm), the model fails to fit the experimental data points of Ansari et al.[8],which implies that the model is applicable for high velocity impact on thick plates only. In this study we have modified this model of Forrestal et al.[3,4](by minor adjustment) for low velocity impact on thin aluminum plates and found excellent agreement with the experimental data (Ansari et al.). We have plotted the impact velocity curve with residual velocity and velocity drop and plate thickness curve varying against ballistic limit velocity which is the basis for comparison in thi...
In this study dual-nose projectile was prepared by two blunt noses along the length of projectile... more In this study dual-nose projectile was prepared by two blunt noses along the length of projectile and then made to impact on aluminium plates of 0.82 mm thickness to observe its deformation behavior. The diameter of first blunt nose was 6.4 mm while second blunt nose was on the shank of the projectile having 12.8 mm diameter. Impact on target plate by double nose projectile was made by gas gun experimentally and then verified numerically on Abaqus FEM code. Mesh convergence study was done to choose the correct elements size in the impact area. It was observed that blunt-blunt projectile perforates the target by producing one plug and one ring while speed of the first plug was higher than the speed of the projectile. Blunt-blunt projectile takes more time to perforate the target than single blunt projectile. Experimental and numerical value agrees to each other.
Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 1994
The SIR-C/X-SAR imaging radar took its first flight on the Space Shuttle Endeavour in April 1994.... more The SIR-C/X-SAR imaging radar took its first flight on the Space Shuttle Endeavour in April 1994. This multi-frequency radar has fully polarimetric capability at L and C-band, and a single polarization at X-band (X-SAR). Calibration of polarimetric L and C-band data for all the differtnt modes SIR-C offers is an especially complicated problem The solution involves extensive analysis of pre-flight test data to come up with a model of the system, analysis of in-flight test data to determine the actual antenna pattern and gains of the system during operation, and analysis of data from over ten calibration sites distributed around the SIR-C/X-SAR orbit track. The SIR-C mission is the first time a multi-frequency larimetric imaging radar employing phased array antenna has k n flown in space. The effort put into the calibration of SIR-C data products has been considerable and is also unique in that this is the first time anyone has attempted to calibrate a spaceborne radar This work was performed by the Jet Propulsion Laboratory, California Institute of Technology, under contract from the National Amnautics and Space A d " t i o n .
Middle East Journal of Scientific Research
The present manuscript designed to collect and enlist the knowledge about the medicinal plant spe... more The present manuscript designed to collect and enlist the knowledge about the medicinal plant species used to treat various diseases by the local inhabitants of district Bahawalnagar, Punjab, Pakistan. This is the very first study of its kind as no one has reported about the vegetation and medicinal flora of this area in recent years. A total of 56 plant species belonging to 38 families have been recorded and local herbal use of the plant species was gathered by using questionnaires and personal verbal conversations with the herbalists in the area. Out of five Tehsils, the people in Fort-Abbas area are more dependent on the folk medicines as compared to others areas of the district. The reason for the fact is due to the high poverty ratio and less approach to basic life necessities in that area. The current status of the flora is threatened by the poor management, fast urbanization, poor land utilizations, over utilization of the flora for the grazers by local communities which is c...
Infectious Disorders - Drug Targets, 2014
Diagnosis of seizure requires visual inspection of EEG, however for large volume of EEG it requir... more Diagnosis of seizure requires visual inspection of EEG, however for large volume of EEG it requires a lot of time and work. Thus, this work is aimed towards the automatic seizure detection with greater accuracy in less time and burden. As EEG signals are non-stationary, conventional method of frequency analysis is not highly successful in classification. This paper deals with a method of automatic analysis of EEG signals using wavelet transform, principle component analysis (PCA) and classification using support vector machine (SVM) technique. Its novelty lies in its simple statistical feature based formulae which makes the algorithm fast and accurate. This proposed technique can classify normal, interictal and ictal EEG with 100% accuracy, sensitivity & specificity, hence can be used to design expert system for seizure diagnosis purpose in various hospitals.
Proceedings of the IEEE INDICON 2004. First India Annual Conference, 2004., 2004
Page 1. 294 IEEB INDlA ANNUAL CONFERENCE 2W4, "DICON 200... more Page 1. 294 IEEB INDlA ANNUAL CONFERENCE 2W4, "DICON 2004 Effect 'of Normalization of Membership Functions in Prernise Region of Generalized Adaptive Neuro-Fuzzy Inference System , ' Masood Anzar and Mohammad Fade hem . . . . ' ...