Rahim Oraji - Academia.edu (original) (raw)

Papers by Rahim Oraji

The Level of Service Inventory-Ontario Revision (LSI-OR) is used as a risk/need assessment tool t... more The Level of Service Inventory-Ontario Revision (LSI-OR) is used as a risk/need assessment tool to classify, manage, and treat the offender population so that they receive supportive services consistent with their custodial needs. This thesis adopts a machine learning approach employing the Näıve Bayes technique as an alternative to the LSI-OR. The study was conducted on a group of (72725) offenders with different races and includes males (82.62%) and females (17.38%). Participants were monitored for two years to collect recidivism information. A basic analysis of the dataset revealed that 1) 83.18% of population used a unique pattern to answer 43 LSI-OR items, 2) the total LSI-OR scores in the entire population and also in male and female population followed two beta distribution functions, one for each recidivism class, and 3) the recidivism rate was approximated by a normal distribution function. It was shown that the Näıve Bayes classifier can be considered as an extended LSI-OR...

It is believed that fundamental M-theory in the low-energy limit can be described effectively by ... more It is believed that fundamental M-theory in the low-energy limit can be described effectively by D=11 supergravity. Extending our understanding of the different classical brane solutions in M-theory (or string theory) is important, and so there is a lot of interest in finding D=11 M-brane solutions such that after reduction to ten dimensions, they (or some combinations of them) reduce simply to the supersymmetric BPS saturated p-brane solutions. In this thesis, we study and construct M2 and M5-branes solutions in D=11 supergravity. The M-brane solutions are constructed by lifting a D-brane to a four or higher dimensional geometry embedded in M-theory and then placing M-brane solutions in the background geometry. We present new analytic M2 and M5-brane solutions in M-theory based on transverse Gibbons-Hawking and Bianchi spaces. These solutions provide realizations of fully localized type IIA D2/D6 and NS5/D6 brane intersections. One novel feature of these solutions is that the metri...

2016 IEEE International Conference on Healthcare Informatics (ICHI), 2016

One third of the world's population is affected by tuberculosis (TB). This pandemic presents ... more One third of the world's population is affected by tuberculosis (TB). This pandemic presents several challenges to the health professionals. Hence, forecasting and controlling TB epidemics play an important role to deal with this disease. Transmission models are valuable tools for projecting and evaluating control strategies against TB, but lack capability to easily integrate noisy information from epidemiological data into projections and policy analysis. To overcome this shortcoming, a dynamical system for TB based on particle filtering algorithm was developed. We evaluated the effectiveness of different levels of particle filtering by running the particle filter to year 2000, then disabling it and judging the discrepancy of model predictions vs. observed data for the period 2000-2007. The successive results revealed similar patterns including a rise in force of infection during the 1990s, but considering successively larger sets of observations yielded smaller discrepancies between particle filtered projections and observed data.

Volume 3: 17th International Conference on Advanced Vehicle Technologies; 12th International Conference on Design Education; 8th Frontiers in Biomedical Devices, 2015

In this paper, concept of developing a haptic tele-robotic master-slave manipulators for ultrasou... more In this paper, concept of developing a haptic tele-robotic master-slave manipulators for ultrasound imaging examination, and some preliminary results will be presented. In a tele-ultrasound system the motion of a master manipulator (such as a haptic wand or a simple joystick) which carries a virtual probe is controlled by a medical expert and remotely reproduced at the patient site by a slave robot, carrying the ultrasound probe. In general a remote diagnostic system contains three divisions: expert station (or expert site), patient station (or patient site), and a communication network such as servers Wi-Fi or satellite network. The experiments demonstrate that the slave manipulator is capable of successfully following the motion of a master manipulator in a path following as well as for point-to-point motions.

In presenting this thesis in partial fulfilment of the requirements for a graduate degree from th... more In presenting this thesis in partial fulfilment of the requirements for a graduate degree from the University of Saskatchewan, I agree that the Libraries of this University may make it freely available for inspection. I further agree that permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professor who supervised my thesis work or, in his absence, by the Head of the Department or the Dean of the College in which my thesis work was done. It is understood that any copying or publication or use of this thesis or parts thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and to the University of Saskatchewan in any scholarly use which may be made of any material in my thesis.

Journal of High Energy Physics, 2013

Journal of High Energy Physics, 2009

We present new M2 and M5 brane solutions in M-theory based on transverse Gibbons-Hawking spaces. ... more We present new M2 and M5 brane solutions in M-theory based on transverse Gibbons-Hawking spaces. These solutions provide realizations of fully localized type IIA D2/D6 and NS5/D6 brane intersections. One novel feature of these solutions is that the metric function depend on more than two transverse coordinates (unlike all the other previous known solutions). All the solutions have eight preserved supersymmetries and the world-volume theories of the NS5-branes are new non-local, nongravitational, six dimensional, T-dual little string theories with eight supersymmetries. We discuss the limits in which the dynamics of the D2 and NS5 branes decouple from the bulk for these solutions.

International Journal of Modern Physics A, 2011

We present analytic solutions for membrane metric function based on transverse k-center instanton... more We present analytic solutions for membrane metric function based on transverse k-center instanton geometries. The membrane metric functions depend on more than two transverse coordinates and the solutions provide realizations of fully localized type IIA D2/D6 and NS5/D6 brane intersections. All solutions have partial preserved supersymmetries.

In presenting this thesis in partial fulfilment of the requirements for a graduate degree from th... more In presenting this thesis in partial fulfilment of the requirements for a graduate degree from the University of Saskatchewan, I agree that the Libraries of this University may make it freely available for inspection. I further agree that permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professor who supervised my thesis work or, in his absence, by the Head of the Department or the Dean of the College in which my thesis work was done. It is understood that any copying or publication or use of this thesis or parts thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and to the University of Saskatchewan in any scholarly use which may be made of any material in my thesis.

The Level of Service Inventory-Ontario Revision (LSI-OR) is used as a risk/need assessment tool t... more The Level of Service Inventory-Ontario Revision (LSI-OR) is used as a risk/need assessment tool to classify, manage, and treat the offender population so that they receive supportive services consistent with their custodial needs. This thesis adopts a machine learning approach employing the Näıve Bayes technique as an alternative to the LSI-OR. The study was conducted on a group of (72725) offenders with different races and includes males (82.62%) and females (17.38%). Participants were monitored for two years to collect recidivism information. A basic analysis of the dataset revealed that 1) 83.18% of population used a unique pattern to answer 43 LSI-OR items, 2) the total LSI-OR scores in the entire population and also in male and female population followed two beta distribution functions, one for each recidivism class, and 3) the recidivism rate was approximated by a normal distribution function. It was shown that the Näıve Bayes classifier can be considered as an extended LSI-OR...

It is believed that fundamental M-theory in the low-energy limit can be described effectively by ... more It is believed that fundamental M-theory in the low-energy limit can be described effectively by D=11 supergravity. Extending our understanding of the different classical brane solutions in M-theory (or string theory) is important, and so there is a lot of interest in finding D=11 M-brane solutions such that after reduction to ten dimensions, they (or some combinations of them) reduce simply to the supersymmetric BPS saturated p-brane solutions. In this thesis, we study and construct M2 and M5-branes solutions in D=11 supergravity. The M-brane solutions are constructed by lifting a D-brane to a four or higher dimensional geometry embedded in M-theory and then placing M-brane solutions in the background geometry. We present new analytic M2 and M5-brane solutions in M-theory based on transverse Gibbons-Hawking and Bianchi spaces. These solutions provide realizations of fully localized type IIA D2/D6 and NS5/D6 brane intersections. One novel feature of these solutions is that the metri...

2016 IEEE International Conference on Healthcare Informatics (ICHI), 2016

One third of the world's population is affected by tuberculosis (TB). This pandemic presents ... more One third of the world's population is affected by tuberculosis (TB). This pandemic presents several challenges to the health professionals. Hence, forecasting and controlling TB epidemics play an important role to deal with this disease. Transmission models are valuable tools for projecting and evaluating control strategies against TB, but lack capability to easily integrate noisy information from epidemiological data into projections and policy analysis. To overcome this shortcoming, a dynamical system for TB based on particle filtering algorithm was developed. We evaluated the effectiveness of different levels of particle filtering by running the particle filter to year 2000, then disabling it and judging the discrepancy of model predictions vs. observed data for the period 2000-2007. The successive results revealed similar patterns including a rise in force of infection during the 1990s, but considering successively larger sets of observations yielded smaller discrepancies between particle filtered projections and observed data.

Volume 3: 17th International Conference on Advanced Vehicle Technologies; 12th International Conference on Design Education; 8th Frontiers in Biomedical Devices, 2015

In this paper, concept of developing a haptic tele-robotic master-slave manipulators for ultrasou... more In this paper, concept of developing a haptic tele-robotic master-slave manipulators for ultrasound imaging examination, and some preliminary results will be presented. In a tele-ultrasound system the motion of a master manipulator (such as a haptic wand or a simple joystick) which carries a virtual probe is controlled by a medical expert and remotely reproduced at the patient site by a slave robot, carrying the ultrasound probe. In general a remote diagnostic system contains three divisions: expert station (or expert site), patient station (or patient site), and a communication network such as servers Wi-Fi or satellite network. The experiments demonstrate that the slave manipulator is capable of successfully following the motion of a master manipulator in a path following as well as for point-to-point motions.

In presenting this thesis in partial fulfilment of the requirements for a graduate degree from th... more In presenting this thesis in partial fulfilment of the requirements for a graduate degree from the University of Saskatchewan, I agree that the Libraries of this University may make it freely available for inspection. I further agree that permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professor who supervised my thesis work or, in his absence, by the Head of the Department or the Dean of the College in which my thesis work was done. It is understood that any copying or publication or use of this thesis or parts thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and to the University of Saskatchewan in any scholarly use which may be made of any material in my thesis.

Journal of High Energy Physics, 2013

Journal of High Energy Physics, 2009

We present new M2 and M5 brane solutions in M-theory based on transverse Gibbons-Hawking spaces. ... more We present new M2 and M5 brane solutions in M-theory based on transverse Gibbons-Hawking spaces. These solutions provide realizations of fully localized type IIA D2/D6 and NS5/D6 brane intersections. One novel feature of these solutions is that the metric function depend on more than two transverse coordinates (unlike all the other previous known solutions). All the solutions have eight preserved supersymmetries and the world-volume theories of the NS5-branes are new non-local, nongravitational, six dimensional, T-dual little string theories with eight supersymmetries. We discuss the limits in which the dynamics of the D2 and NS5 branes decouple from the bulk for these solutions.

International Journal of Modern Physics A, 2011

We present analytic solutions for membrane metric function based on transverse k-center instanton... more We present analytic solutions for membrane metric function based on transverse k-center instanton geometries. The membrane metric functions depend on more than two transverse coordinates and the solutions provide realizations of fully localized type IIA D2/D6 and NS5/D6 brane intersections. All solutions have partial preserved supersymmetries.

In presenting this thesis in partial fulfilment of the requirements for a graduate degree from th... more In presenting this thesis in partial fulfilment of the requirements for a graduate degree from the University of Saskatchewan, I agree that the Libraries of this University may make it freely available for inspection. I further agree that permission for copying of this thesis in any manner, in whole or in part, for scholarly purposes may be granted by the professor who supervised my thesis work or, in his absence, by the Head of the Department or the Dean of the College in which my thesis work was done. It is understood that any copying or publication or use of this thesis or parts thereof for financial gain shall not be allowed without my written permission. It is also understood that due recognition shall be given to me and to the University of Saskatchewan in any scholarly use which may be made of any material in my thesis.