Maryam Emami | Islamic Azad University Isfahan (Khorasgan) Branch (original) (raw)

Papers by Maryam Emami

Research paper thumbnail of Application of Artificial Neural Networks (ANNs) in prediction and Interpretation of Pressuremeter Test Results

The successful application of in-situ testing of soils heavily depends on development of methods ... more The successful application of in-situ testing of soils heavily depends on development of methods of interpretation of the tests. With recent developments in equipment and theoretical methods of interpretation, in situ testing has become a standard requirement of most site investigations. The Pressuremeter test is the one of most important in-situ tests of soil. Pressuremeters are devices for carrying out

Research paper thumbnail of Designing the me- cat compiler based on a family of structured intermediate representations

Research paper thumbnail of A practical context-sensitive interprocedurai anasysls framework for c compilers

Research paper thumbnail of Examining the Influence of Production Scale on the Volume Expansion Behavior of Polyethylene Foams in Rotational Foam Molding

Advances in Polymer Technology, 2015

ABSTRACT In the present study, an evaluation of the “scale of production” on rotational foam mold... more ABSTRACT In the present study, an evaluation of the “scale of production” on rotational foam molding was conducted and experimental observations from microscopic, lab- and pilot-scale foam systems were used to investigate the impact of the rheology on the process. A systematic comparison looking at the influence of rheological properties of the polymer matrix on the expansion behavior of polyethylene foams indicated that the size of the foam system does not affect the fundamental mechanisms of the foaming process and that the effects of system size on foam techniques could be suppressed by tailoring the processing conditions. It was demonstrated that the impact of rheology on bubble development observed in microscopic studies can be practically extended to higher scales of foaming, and the results can provide guidelines for the selection of the polymer materials for customized foam applications.

Research paper thumbnail of Designing the McCAT Compiler Based on a Family of Structured Intermediate Representations

The e ective exploitation of advanced technology for the development of the nextgeneration high-p... more The e ective exploitation of advanced technology for the development of the nextgeneration high-performance computers requires the integrated development of compiler techniques and architectural design. In order to provide a research tool with which we can experiment with both new architectural features and compiler support for those features, we have been developing the McGill Compiler/Architecture Testbed, McCAT.

Research paper thumbnail of Emami Nucleation

Research paper thumbnail of Causes and Risk Factors of Urinary Incontinence: Avicenna's Point of View vs. Contemporary Findings

Urology journal, Jan 22, 2015

To extract the causes and risk factors of urinary incontinence from an old medical text by Avicen... more To extract the causes and risk factors of urinary incontinence from an old medical text by Avicenna entitled "Canon of Medicine" and comparing it with contemporary studies. In this study, etiology and risk factors of urinary incontinence were extracted from Avicenna's "Canon of Medicine". Commentaries written on this book and other old reliable medical texts about bladder and its diseases were also studied. Then the achieved information was compared with contemporary findings of published articles. Urinary incontinence results from bladder dysfunction in reservoir phase. Bladder's involuntary muscles and voluntary external sphincter are two main components which are involved in this process. Urinary incontinence can exist without obvious structural and neuronal etiologies. According to Avicenna, distemperment of muscular tissue of bladder and external sphincter is the cause for urinary incontinence in such cases. Distemperment is the result of bothering q...

Research paper thumbnail of Interrelationship between entrepreneurial trait and leadership talent

Research paper thumbnail of Context-sensitive interprocedural points-to analysis in the presence of function pointers

ACM SIGPLAN Notices, 1994

Maryam Emami Rakesh Ghiya Laurie J. Hendren School of Computer Science McGill University, Montrea... more Maryam Emami Rakesh Ghiya Laurie J. Hendren School of Computer Science McGill University, Montreal, Quebec Canada H3A 2A7 {emami ,ghiya,hendren}@cs .mcgill. ca ... This paper reports on the design, implementation, and empirical results of a new method for ...

Research paper thumbnail of Designing the McCAT compiler based on a family of structured intermediate representations

Lecture Notes in Computer Science, 1993

The e ective exploitation of advanced technology for the development of the nextgeneration high-p... more The e ective exploitation of advanced technology for the development of the nextgeneration high-performance computers requires the integrated development of compiler techniques and architectural design. In order to provide a research tool with which we can experiment with both new architectural features and compiler support for those features, we have been developing the McGill Compiler/Architecture Testbed, McCAT.

Research paper thumbnail of High temperature tribological behaviour of 31CrMoV9 gas nitrided steel

Surface Engineering, 2010

In the present study, high temperature tribological behaviour of gas nitrided 31CrMoV9 steel was ... more In the present study, high temperature tribological behaviour of gas nitrided 31CrMoV9 steel was investigated. Gas nitriding was carried out in ammonia gas atmosphere at 520uC for 24 h. The wear behaviour of the specimens was studied using a high temperature pin on disc wear tester at 25, 300 and 500uC. The results showed that the wear resistance of the nitrided steel improved by 1?8fold compared with the untreated specimen at room temperature. The wear tests at 300uC and notably at 500uC showed much better improvements in wear behaviour of nitrided steel by about 3?6-and 33fold respectively. Scanning electron microscopy study of worn surfaces indicated that the formation of solid compact layers was responsible for the higher wear resistance of the gas nitrided samples at higher temperatures.

Research paper thumbnail of Bubble nucleation in nonpressurized polymer foaming systems

Polymer Engineering & Science, 2014

This work explores the influence of rheological properties on polymer foam development in nonpres... more This work explores the influence of rheological properties on polymer foam development in nonpressurized systems. To understand the complex contributions of rheology on the mechanism of bubble growth during different stages of foam processing, visualization studies were conducted by using a polymer-foaming microscopy setup. The evolving cellular structure during foaming was analyzed for its bubble surface density, bubble size, total bubble projected area, and bubble size distribution. Morphological analysis was used to determine the rheological processing window in terms of shear viscosity, elastic modulus, melt strength and strain-hardening, intended for the production of foams with greater foam expansion, increased bubble density and reduced bubble size. A bubble growth model and simulation scheme was also developed to describe the bubble growth phenomena that occurred in nonpressurized foaming systems. Using thermophysical and rheological properties of polymer/gas mixtures, the growth profiles for bubbles were predicted and compared to experimentally observed data. It was verified that the viscous bubble growth model was capable of depicting the growth behaviors of bubbles under various processing conditions. Furthermore, the effects of thermophysical and rheological parameters on the bubble growth dynamics were demonstrated by a series of sensitivity studies.

Research paper thumbnail of Experimental and numerical studies on bubble dynamics in nonpressurized foaming systems

Polymer Engineering & Science, 2013

This work explores the influence of rheological properties on polymer foam development in nonpres... more This work explores the influence of rheological properties on polymer foam development in nonpressurized systems. To understand the complex contributions of rheology on the mechanism of bubble growth during different stages of foam processing, visualization studies were conducted by using a polymer-foaming microscopy setup. The evolving cellular structure during foaming was analyzed for its bubble surface density, bubble size, total bubble projected area, and bubble size distribution. Morphological analysis was used to determine the rheological processing window in terms of shear viscosity, elastic modulus, melt strength and strain-hardening, intended for the production of foams with greater foam expansion, increased bubble density and reduced bubble size. A bubble growth model and simulation scheme was also developed to describe the bubble growth phenomena that occurred in nonpressurized foaming systems. Using thermophysical and rheological properties of polymer/gas mixtures, the growth profiles for bubbles were predicted and compared to experimentally observed data. It was verified that the viscous bubble growth model was capable of depicting the growth behaviors of bubbles under various processing conditions. Furthermore, the effects of thermophysical and rheological parameters on the bubble growth dynamics were demonstrated by a series of sensitivity studies.

Research paper thumbnail of Discrete magnetic probes measurement versus analytical method in determining plasma position in IR-T1 Tokamak

Fusion Engineering and Design, 2011

One of the analytical solutions to the inhomogeneous Grad-Shafranov equation (GSE) is based on th... more One of the analytical solutions to the inhomogeneous Grad-Shafranov equation (GSE) is based on the well-known Solov'ev equilibrium that corresponds to source functions linear in . The GSE has been solved by this method with constraints over plasma current and poloidal beta using rectangular fixed boundary conditions . In this paper a new analytical solution to GSE by imposing constraints on the plasma current andˇp + l i /2 is presented. This method is used for plasma position determination in IR-T1 Tokamak by considering linear source functions and circular fixed boundary conditions. Plasma position is also measured by discrete magnetic probes and is compared with the analytical technique. Results comparison shows good agreement for a typical discharge in IR-T1 Tokamak.

Research paper thumbnail of Comparative study of plasma position measurements using multipole moments and discrete magnetic probes methods on IR-T1 tokamak

Fusion Engineering and Design, 2008

In this paper, we present a comparative study for estimating plasma column displacement using mul... more In this paper, we present a comparative study for estimating plasma column displacement using multipole moments and discrete magnetic probes methods. It is shown that multipole moments method gives a better performance in the real time determination of the plasma column displacement in IR-T1 tokamak.

Research paper thumbnail of Some new large sets of -designs

Discrete Mathematics, 2010

We investigate the existence of some large sets of size nine. We take advantage of the recursive ... more We investigate the existence of some large sets of size nine. We take advantage of the recursive and direct constructing method to show that in cases LS[9](2,4,v) the trivial necessary condition is also sufficient. In particular LS[9](2,4,29) is constructed. This fills a gap.

Research paper thumbnail of Minimal quantity lubrication-MQL in grinding of Ti�6Al�4V titanium alloy

International Journal of Advanced Manufacturing Technology, 2009

Titanium and its alloys are attractive materials due to their unique high strength-weight ratio t... more Titanium and its alloys are attractive materials due to their unique high strength-weight ratio that is maintained at elevated temperatures and their exceptional corrosion resistance. The major application of titanium has been in the aerospace industry. On the other hand, titanium and its alloys are notorious for their poor thermal properties and are classified as difficult-to-machine materials. The problems that arise during grinding of titanium alloys are attributed to the high specific energy and high grinding zone temperature. Significant progress has been made in dry and semidry machining recently, and minimal quantity lubrication (MQL) machining in particular has been accepted as a successful semidry application because of its environmentally friendly characteristics. A number of studies have shown that MQL machining can show satisfactory performance in practical machining operations. However, there has been few investigation of MQL grinding of special alloys like titanium alloys and the cutting fluids to be used in MQL grinding of these alloys. In this study, vegetable and synthetic esters oil are compared on the basis of the surface quality properties that would be suitable for MQL applications. The cutting performance of fluids is also evaluated using conventional wet (fluid) grinding of Ti-6Al-4V. As a result, synthetic ester oil is found to be optimal cutting fluids for MQL grinding of Ti-6Al-4V.

Research paper thumbnail of Multipole confined diffusion plasma produced by 13.56 MHz electrodeless source

Journal of Vacuum Science and Technology a Vacuum Surfaces and Films, Nov 1, 1989

Research paper thumbnail of Organizational commitment and the implications for employees and organizations

Despite the increasing attention of organizational commitment in the management literature, most ... more Despite the increasing attention of organizational commitment in the management literature, most studies predominantly focus on full-time workers in traditional work settings. The results of this study highlight important directions for implementing strategies to increase casual academic's organizational commitment. Organization commitment is important because it is known association with other important organizational variables such as turnover, absenteeism and work effort. This study provides the first step in better understanding the factors that affect the organization commitment.

Research paper thumbnail of Comparative Measurements of Plasma Position Using Multipole Moments Method and Analytical Solution of Grad-Shafranov Equation in IR-T1 Tokamak

J Fusion Energ, 2009

... Ym ¼ Z J/fmdS/ ¼ 1 l0Ip I ½fmBh þ ðx þ RÞgmBn dl; ð1Þ A. Salar Elahi (&) Á M. Ghorannevis... more ... Ym ¼ Z J/fmdS/ ¼ 1 l0Ip I ½fmBh þ ðx þ RÞgmBn dl; ð1Þ A. Salar Elahi (&) Á M. Ghoranneviss Plasma Physics Research Center, Science & Research Branch, Islamic Azad University, PO Box 14665-678, Tehran, Iran e-mail: salari_phy@yahoo.com ...

Research paper thumbnail of Application of Artificial Neural Networks (ANNs) in prediction and Interpretation of Pressuremeter Test Results

The successful application of in-situ testing of soils heavily depends on development of methods ... more The successful application of in-situ testing of soils heavily depends on development of methods of interpretation of the tests. With recent developments in equipment and theoretical methods of interpretation, in situ testing has become a standard requirement of most site investigations. The Pressuremeter test is the one of most important in-situ tests of soil. Pressuremeters are devices for carrying out

Research paper thumbnail of Designing the me- cat compiler based on a family of structured intermediate representations

Research paper thumbnail of A practical context-sensitive interprocedurai anasysls framework for c compilers

Research paper thumbnail of Examining the Influence of Production Scale on the Volume Expansion Behavior of Polyethylene Foams in Rotational Foam Molding

Advances in Polymer Technology, 2015

ABSTRACT In the present study, an evaluation of the “scale of production” on rotational foam mold... more ABSTRACT In the present study, an evaluation of the “scale of production” on rotational foam molding was conducted and experimental observations from microscopic, lab- and pilot-scale foam systems were used to investigate the impact of the rheology on the process. A systematic comparison looking at the influence of rheological properties of the polymer matrix on the expansion behavior of polyethylene foams indicated that the size of the foam system does not affect the fundamental mechanisms of the foaming process and that the effects of system size on foam techniques could be suppressed by tailoring the processing conditions. It was demonstrated that the impact of rheology on bubble development observed in microscopic studies can be practically extended to higher scales of foaming, and the results can provide guidelines for the selection of the polymer materials for customized foam applications.

Research paper thumbnail of Designing the McCAT Compiler Based on a Family of Structured Intermediate Representations

The e ective exploitation of advanced technology for the development of the nextgeneration high-p... more The e ective exploitation of advanced technology for the development of the nextgeneration high-performance computers requires the integrated development of compiler techniques and architectural design. In order to provide a research tool with which we can experiment with both new architectural features and compiler support for those features, we have been developing the McGill Compiler/Architecture Testbed, McCAT.

Research paper thumbnail of Emami Nucleation

Research paper thumbnail of Causes and Risk Factors of Urinary Incontinence: Avicenna's Point of View vs. Contemporary Findings

Urology journal, Jan 22, 2015

To extract the causes and risk factors of urinary incontinence from an old medical text by Avicen... more To extract the causes and risk factors of urinary incontinence from an old medical text by Avicenna entitled "Canon of Medicine" and comparing it with contemporary studies. In this study, etiology and risk factors of urinary incontinence were extracted from Avicenna's "Canon of Medicine". Commentaries written on this book and other old reliable medical texts about bladder and its diseases were also studied. Then the achieved information was compared with contemporary findings of published articles. Urinary incontinence results from bladder dysfunction in reservoir phase. Bladder's involuntary muscles and voluntary external sphincter are two main components which are involved in this process. Urinary incontinence can exist without obvious structural and neuronal etiologies. According to Avicenna, distemperment of muscular tissue of bladder and external sphincter is the cause for urinary incontinence in such cases. Distemperment is the result of bothering q...

Research paper thumbnail of Interrelationship between entrepreneurial trait and leadership talent

Research paper thumbnail of Context-sensitive interprocedural points-to analysis in the presence of function pointers

ACM SIGPLAN Notices, 1994

Maryam Emami Rakesh Ghiya Laurie J. Hendren School of Computer Science McGill University, Montrea... more Maryam Emami Rakesh Ghiya Laurie J. Hendren School of Computer Science McGill University, Montreal, Quebec Canada H3A 2A7 {emami ,ghiya,hendren}@cs .mcgill. ca ... This paper reports on the design, implementation, and empirical results of a new method for ...

Research paper thumbnail of Designing the McCAT compiler based on a family of structured intermediate representations

Lecture Notes in Computer Science, 1993

The e ective exploitation of advanced technology for the development of the nextgeneration high-p... more The e ective exploitation of advanced technology for the development of the nextgeneration high-performance computers requires the integrated development of compiler techniques and architectural design. In order to provide a research tool with which we can experiment with both new architectural features and compiler support for those features, we have been developing the McGill Compiler/Architecture Testbed, McCAT.

Research paper thumbnail of High temperature tribological behaviour of 31CrMoV9 gas nitrided steel

Surface Engineering, 2010

In the present study, high temperature tribological behaviour of gas nitrided 31CrMoV9 steel was ... more In the present study, high temperature tribological behaviour of gas nitrided 31CrMoV9 steel was investigated. Gas nitriding was carried out in ammonia gas atmosphere at 520uC for 24 h. The wear behaviour of the specimens was studied using a high temperature pin on disc wear tester at 25, 300 and 500uC. The results showed that the wear resistance of the nitrided steel improved by 1?8fold compared with the untreated specimen at room temperature. The wear tests at 300uC and notably at 500uC showed much better improvements in wear behaviour of nitrided steel by about 3?6-and 33fold respectively. Scanning electron microscopy study of worn surfaces indicated that the formation of solid compact layers was responsible for the higher wear resistance of the gas nitrided samples at higher temperatures.

Research paper thumbnail of Bubble nucleation in nonpressurized polymer foaming systems

Polymer Engineering & Science, 2014

This work explores the influence of rheological properties on polymer foam development in nonpres... more This work explores the influence of rheological properties on polymer foam development in nonpressurized systems. To understand the complex contributions of rheology on the mechanism of bubble growth during different stages of foam processing, visualization studies were conducted by using a polymer-foaming microscopy setup. The evolving cellular structure during foaming was analyzed for its bubble surface density, bubble size, total bubble projected area, and bubble size distribution. Morphological analysis was used to determine the rheological processing window in terms of shear viscosity, elastic modulus, melt strength and strain-hardening, intended for the production of foams with greater foam expansion, increased bubble density and reduced bubble size. A bubble growth model and simulation scheme was also developed to describe the bubble growth phenomena that occurred in nonpressurized foaming systems. Using thermophysical and rheological properties of polymer/gas mixtures, the growth profiles for bubbles were predicted and compared to experimentally observed data. It was verified that the viscous bubble growth model was capable of depicting the growth behaviors of bubbles under various processing conditions. Furthermore, the effects of thermophysical and rheological parameters on the bubble growth dynamics were demonstrated by a series of sensitivity studies.

Research paper thumbnail of Experimental and numerical studies on bubble dynamics in nonpressurized foaming systems

Polymer Engineering & Science, 2013

This work explores the influence of rheological properties on polymer foam development in nonpres... more This work explores the influence of rheological properties on polymer foam development in nonpressurized systems. To understand the complex contributions of rheology on the mechanism of bubble growth during different stages of foam processing, visualization studies were conducted by using a polymer-foaming microscopy setup. The evolving cellular structure during foaming was analyzed for its bubble surface density, bubble size, total bubble projected area, and bubble size distribution. Morphological analysis was used to determine the rheological processing window in terms of shear viscosity, elastic modulus, melt strength and strain-hardening, intended for the production of foams with greater foam expansion, increased bubble density and reduced bubble size. A bubble growth model and simulation scheme was also developed to describe the bubble growth phenomena that occurred in nonpressurized foaming systems. Using thermophysical and rheological properties of polymer/gas mixtures, the growth profiles for bubbles were predicted and compared to experimentally observed data. It was verified that the viscous bubble growth model was capable of depicting the growth behaviors of bubbles under various processing conditions. Furthermore, the effects of thermophysical and rheological parameters on the bubble growth dynamics were demonstrated by a series of sensitivity studies.

Research paper thumbnail of Discrete magnetic probes measurement versus analytical method in determining plasma position in IR-T1 Tokamak

Fusion Engineering and Design, 2011

One of the analytical solutions to the inhomogeneous Grad-Shafranov equation (GSE) is based on th... more One of the analytical solutions to the inhomogeneous Grad-Shafranov equation (GSE) is based on the well-known Solov'ev equilibrium that corresponds to source functions linear in . The GSE has been solved by this method with constraints over plasma current and poloidal beta using rectangular fixed boundary conditions . In this paper a new analytical solution to GSE by imposing constraints on the plasma current andˇp + l i /2 is presented. This method is used for plasma position determination in IR-T1 Tokamak by considering linear source functions and circular fixed boundary conditions. Plasma position is also measured by discrete magnetic probes and is compared with the analytical technique. Results comparison shows good agreement for a typical discharge in IR-T1 Tokamak.

Research paper thumbnail of Comparative study of plasma position measurements using multipole moments and discrete magnetic probes methods on IR-T1 tokamak

Fusion Engineering and Design, 2008

In this paper, we present a comparative study for estimating plasma column displacement using mul... more In this paper, we present a comparative study for estimating plasma column displacement using multipole moments and discrete magnetic probes methods. It is shown that multipole moments method gives a better performance in the real time determination of the plasma column displacement in IR-T1 tokamak.

Research paper thumbnail of Some new large sets of -designs

Discrete Mathematics, 2010

We investigate the existence of some large sets of size nine. We take advantage of the recursive ... more We investigate the existence of some large sets of size nine. We take advantage of the recursive and direct constructing method to show that in cases LS[9](2,4,v) the trivial necessary condition is also sufficient. In particular LS[9](2,4,29) is constructed. This fills a gap.

Research paper thumbnail of Minimal quantity lubrication-MQL in grinding of Ti�6Al�4V titanium alloy

International Journal of Advanced Manufacturing Technology, 2009

Titanium and its alloys are attractive materials due to their unique high strength-weight ratio t... more Titanium and its alloys are attractive materials due to their unique high strength-weight ratio that is maintained at elevated temperatures and their exceptional corrosion resistance. The major application of titanium has been in the aerospace industry. On the other hand, titanium and its alloys are notorious for their poor thermal properties and are classified as difficult-to-machine materials. The problems that arise during grinding of titanium alloys are attributed to the high specific energy and high grinding zone temperature. Significant progress has been made in dry and semidry machining recently, and minimal quantity lubrication (MQL) machining in particular has been accepted as a successful semidry application because of its environmentally friendly characteristics. A number of studies have shown that MQL machining can show satisfactory performance in practical machining operations. However, there has been few investigation of MQL grinding of special alloys like titanium alloys and the cutting fluids to be used in MQL grinding of these alloys. In this study, vegetable and synthetic esters oil are compared on the basis of the surface quality properties that would be suitable for MQL applications. The cutting performance of fluids is also evaluated using conventional wet (fluid) grinding of Ti-6Al-4V. As a result, synthetic ester oil is found to be optimal cutting fluids for MQL grinding of Ti-6Al-4V.

Research paper thumbnail of Multipole confined diffusion plasma produced by 13.56 MHz electrodeless source

Journal of Vacuum Science and Technology a Vacuum Surfaces and Films, Nov 1, 1989

Research paper thumbnail of Organizational commitment and the implications for employees and organizations

Despite the increasing attention of organizational commitment in the management literature, most ... more Despite the increasing attention of organizational commitment in the management literature, most studies predominantly focus on full-time workers in traditional work settings. The results of this study highlight important directions for implementing strategies to increase casual academic's organizational commitment. Organization commitment is important because it is known association with other important organizational variables such as turnover, absenteeism and work effort. This study provides the first step in better understanding the factors that affect the organization commitment.

Research paper thumbnail of Comparative Measurements of Plasma Position Using Multipole Moments Method and Analytical Solution of Grad-Shafranov Equation in IR-T1 Tokamak

J Fusion Energ, 2009

... Ym ¼ Z J/fmdS/ ¼ 1 l0Ip I ½fmBh þ ðx þ RÞgmBn dl; ð1Þ A. Salar Elahi (&) Á M. Ghorannevis... more ... Ym ¼ Z J/fmdS/ ¼ 1 l0Ip I ½fmBh þ ðx þ RÞgmBn dl; ð1Þ A. Salar Elahi (&) Á M. Ghoranneviss Plasma Physics Research Center, Science & Research Branch, Islamic Azad University, PO Box 14665-678, Tehran, Iran e-mail: salari_phy@yahoo.com ...