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A computationally efficient algorithm is presented for locating multiple sources on a two-dimensi... more A computationally efficient algorithm is presented for locating multiple sources on a two-dimensional grid. The total number of the sources as well as their intensities and locations on the two-dimensional grid are assumed unknown and the intensities of the sources are not necessarily identical. The distribution of the source intensity on the grid, which contains all the information about the sources, is obtained by solving a convex optimization problem. With the source distribution interpreted as a two-dimensional gray-level image, the sources are determined as the centroids of the objects in the image. Given the number of sources and the source locations, the source intensities are estimated by solving a linear least-squares problem.

Nuclear Medicine Communications, 1996

Intravenously administered dextran is used clinically as a plasma expander. The aim of this study... more Intravenously administered dextran is used clinically as a plasma expander. The aim of this study was to assess the use of 99Tcm-dextran in the diagnosis of gastrointestinal (GI) blood leaks. Twenty-one patients with GI blood loss underwent 99Tcm-dextran scintigraphy, 17 of whom were found to be positive. Pathologic or 99Tcm-RBC (red blood cell) blood pool correlation was possible in 15 cases, while 2 were unconfirmed. No case had a positive 99Tcm-RBC blood pool study and a negative 99Tcm-dextran study. Images obtained with 99Tcm-dextran were generally better than those with 99Tcm-RBC. This agent may have several other advantages over 99Tcm-RBC blood pool and 99Tcm-sulphur colloid scintigraphy for detecting GI blood loss.

Gene duplication and sequence divergence are driving forces toward establishing protein families.... more Gene duplication and sequence divergence are driving forces toward establishing protein families. To examine how sequence changes affect carbohydrate specificity the two closely related prototype chicken galectins CG-14 and CG-16 were selected as models. Binding properties were analyzed using a highly sensitive solid-phase assay. We tested 56 free saccharides and 34 well-defined glycoproteins. The two galectins share preference for the II vs. I version of β-galactosides. A pronounced difference is found due to the reactivity of CG-14 with histo-blood group ABH active oligosaccharides and A/B active glycoproteins. These experimental results prompted to determine activity-structure correlations by modeling. Computational analysis included consideration of flexibility of binding partners and presence of water molecules. It provided a comparative description of complete carbohydrate recognition domains, which had so far not been characterized in animal galectins. The structural models assigned II, I selectivity to a region downstream of the central Trp moiety. Docking revealed that the tetrasaccharides can be accommodated in their free-state lowenergy conformations. CG-14's preference for A vs. B epitopes could be attributed to a contact between His124 and the N-acetyl group of GalNAc. Regarding inter-galectin comparison, the Ala53/Cys51 exchange affects the interaction potential of His54/His52. Close inspection of simulated dynamic interplay revealed reorientation of His124 at the site of the His124/Glu123 substitution with potential impact on ligand dissociation. In summary, this study identifies activity differences and provides information on their relation to structural divergence, epitomizing the value of this combined approach beyond galectins.

Journal of Medical Imaging and …, 2011

Methods: Twenty-four patients with renal dysfunction suspected of having pulmonary embolus underw... more Methods: Twenty-four patients with renal dysfunction suspected of having pulmonary embolus underwent CTPA using 30 mL of contrast. A modified acquisition protocol was employed where sequential monitoring of the central superior vena cava (SVC) was performed following ...

Phys. Chem. Chem. …, 2010

Phys. Chem. Chem. Phys., 2010, 12, 11728-11735 DOI:10.1039/C003855P (Paper). Micellar transitions... more Phys. Chem. Chem. Phys., 2010, 12, 11728-11735 DOI:10.1039/C003855P (Paper). Micellar transitions in the aqueous solutions of a surfactant-like ionic liquid: 1-butyl-3-methylimidazolium octylsulfate. Tejwant Singha, Markus ...

A Field experiment was conducted during kharif 2002 and 2003 at Research Farm of Banaras Hindu Un... more A Field experiment was conducted during kharif 2002 and 2003 at Research Farm of Banaras Hindu University, Varanasi to study the effect of fertility and silicon levels on rice cultivars. Two rice varieties (NDR-97 and Vandana) were tested with three fertility levels [( ...

... for ubiq uitous com p uting: P ersp ective from a service p rovider. Tejinder Singh and Moh L... more ... for ubiq uitous com p uting: P ersp ective from a service p rovider. Tejinder Singh and Moh L im Sim , Member, IEEE ... TSingh and ML Sim are w ith th e BT A sian R esearch C entre, C y berjay a, Malay sia TA BL EI WO RLD WID E MO BIL E TE R MIN AL SA LES (IN MIL L IO NS) ...

Effect of different modes of rolling deformation and its role in the development of crystallograp... more Effect of different modes of rolling deformation and its role in the development of crystallographic texture has been studied for pure Cu, and Cu(Cr) and Cu(P) alloys with a view to obtain a very fine grained microstructure and very weak texture after annealing. Results indicate that ...

Fortschritte der Physik/Progress of Physics, 1993

... (3.31) diverges at t, -+ - co. Finally, we consider the stiff matter ( p = e) solutions which... more ... (3.31) diverges at t, -+ - co. Finally, we consider the stiff matter ( p = e) solutions which are given by R4 = 42' + Ro4 (3.32) (3.33) ... 4.1. Bianchi type-I model The Bianchi type-I metric is given by ds2 = dt' - Ri2(t) (axi)', i = 1, 2, 3 (4.1.1) with the corresponding field equations ...

Automatica, 2007

The objective of this paper is to propose an approach to robust stabilization of systems which ar... more The objective of this paper is to propose an approach to robust stabilization of systems which are composed of linear subsystems coupled by nonlinear time-varying interconnections satisfying quadratic constraints. The proposed algorithms, which are formulated within the convex optimization framework, employ linear dynamic feedback structure involving local Luenberger-type observers. It is also shown how the new methodology can produce improved results if interconnections have linear parts that are known a priori. Examples of output stabilization of inverted pendulums and decentralized control of a platoon of vehicles are used to illustrate the applicability of the design method.

ocis.org.nz

Utilizing a case studies approach, 72 in-depth interviews were conducted to explore the conflict ... more Utilizing a case studies approach, 72 in-depth interviews were conducted to explore the conflict between the pursuit of graduate education and the traditional role expectations for women in three distinct cultures. Examining the experience of graduate students in Jamaica, India ...

This paper presents two techniques for the determination of modal weights for the design of robus... more This paper presents two techniques for the determination of modal weights for the design of robust input shapers for multi-mode systems. The weights for the first technique are derived based on the scaling factor for the potential energy in each mode, such that the modal displacement is the same. The second technique exploits the modal cost analysis which uses the angle between the right eigenvectors and the row vectors of the output matrix to determine the contribution of each mode to the output. Two examples are used to illustrate the improvement in performance of the modal weighted minimax shapers compared to the traditional minimax shaper which equally weighs all the modes.

Astrophysics and Space Science, 1983

Abstract. Solutions of Brans-Dicke field equations are obtained when the source of the gravitatio... more Abstract. Solutions of Brans-Dicke field equations are obtained when the source of the gravitational field is a perfect fluid with pressure equal to energy density and the metric is cylindrically symmetric of Marder-type. Various physical and geometrical properties of the model have been ...

Roughly 60% of the Earth's outer surface is comprised of oceanic crust formed by volcanic process... more Roughly 60% of the Earth's outer surface is comprised of oceanic crust formed by volcanic processes at mid-ocean ridges (MORs). Although only a small fraction of this vast volcanic terrain has been visually surveyed and/or sampled, the available evidence suggests that explosive eruptions are rare on MORs, particularly at depths below the critical point for

Dynamics and Stability of Systems, 1991

ABSTRACT

Psychological Science, 24(6), 1060-1062, Jun 7, 2013

Social meaning of ambiguous sounds influences retrospective duration judgments Social scientists ... more Social meaning of ambiguous sounds influences retrospective duration judgments Social scientists have described noise as "sound out of place" (Bailey 1996: 50). This implies our experience of a stimulus is not simply a reflection of its intrinsic properties but depends on the social-contextual meanings attributed to it. Following Bruner (Bruner, 1957; Bruner & Goodman, 1947), psychology has confirmed the importance of social meaning for perception-especially visual information processing (Balcetis & Lassiter, 2010). Here we

A computationally efficient algorithm is presented for locating multiple sources on a two-dimensi... more A computationally efficient algorithm is presented for locating multiple sources on a two-dimensional grid. The total number of the sources as well as their intensities and locations on the two-dimensional grid are assumed unknown and the intensities of the sources are not necessarily identical. The distribution of the source intensity on the grid, which contains all the information about the sources, is obtained by solving a convex optimization problem. With the source distribution interpreted as a two-dimensional gray-level image, the sources are determined as the centroids of the objects in the image. Given the number of sources and the source locations, the source intensities are estimated by solving a linear least-squares problem.

Nuclear Medicine Communications, 1996

Intravenously administered dextran is used clinically as a plasma expander. The aim of this study... more Intravenously administered dextran is used clinically as a plasma expander. The aim of this study was to assess the use of 99Tcm-dextran in the diagnosis of gastrointestinal (GI) blood leaks. Twenty-one patients with GI blood loss underwent 99Tcm-dextran scintigraphy, 17 of whom were found to be positive. Pathologic or 99Tcm-RBC (red blood cell) blood pool correlation was possible in 15 cases, while 2 were unconfirmed. No case had a positive 99Tcm-RBC blood pool study and a negative 99Tcm-dextran study. Images obtained with 99Tcm-dextran were generally better than those with 99Tcm-RBC. This agent may have several other advantages over 99Tcm-RBC blood pool and 99Tcm-sulphur colloid scintigraphy for detecting GI blood loss.

Gene duplication and sequence divergence are driving forces toward establishing protein families.... more Gene duplication and sequence divergence are driving forces toward establishing protein families. To examine how sequence changes affect carbohydrate specificity the two closely related prototype chicken galectins CG-14 and CG-16 were selected as models. Binding properties were analyzed using a highly sensitive solid-phase assay. We tested 56 free saccharides and 34 well-defined glycoproteins. The two galectins share preference for the II vs. I version of β-galactosides. A pronounced difference is found due to the reactivity of CG-14 with histo-blood group ABH active oligosaccharides and A/B active glycoproteins. These experimental results prompted to determine activity-structure correlations by modeling. Computational analysis included consideration of flexibility of binding partners and presence of water molecules. It provided a comparative description of complete carbohydrate recognition domains, which had so far not been characterized in animal galectins. The structural models assigned II, I selectivity to a region downstream of the central Trp moiety. Docking revealed that the tetrasaccharides can be accommodated in their free-state lowenergy conformations. CG-14's preference for A vs. B epitopes could be attributed to a contact between His124 and the N-acetyl group of GalNAc. Regarding inter-galectin comparison, the Ala53/Cys51 exchange affects the interaction potential of His54/His52. Close inspection of simulated dynamic interplay revealed reorientation of His124 at the site of the His124/Glu123 substitution with potential impact on ligand dissociation. In summary, this study identifies activity differences and provides information on their relation to structural divergence, epitomizing the value of this combined approach beyond galectins.

Journal of Medical Imaging and …, 2011

Methods: Twenty-four patients with renal dysfunction suspected of having pulmonary embolus underw... more Methods: Twenty-four patients with renal dysfunction suspected of having pulmonary embolus underwent CTPA using 30 mL of contrast. A modified acquisition protocol was employed where sequential monitoring of the central superior vena cava (SVC) was performed following ...

Phys. Chem. Chem. …, 2010

Phys. Chem. Chem. Phys., 2010, 12, 11728-11735 DOI:10.1039/C003855P (Paper). Micellar transitions... more Phys. Chem. Chem. Phys., 2010, 12, 11728-11735 DOI:10.1039/C003855P (Paper). Micellar transitions in the aqueous solutions of a surfactant-like ionic liquid: 1-butyl-3-methylimidazolium octylsulfate. Tejwant Singha, Markus ...

A Field experiment was conducted during kharif 2002 and 2003 at Research Farm of Banaras Hindu Un... more A Field experiment was conducted during kharif 2002 and 2003 at Research Farm of Banaras Hindu University, Varanasi to study the effect of fertility and silicon levels on rice cultivars. Two rice varieties (NDR-97 and Vandana) were tested with three fertility levels [( ...

... for ubiq uitous com p uting: P ersp ective from a service p rovider. Tejinder Singh and Moh L... more ... for ubiq uitous com p uting: P ersp ective from a service p rovider. Tejinder Singh and Moh L im Sim , Member, IEEE ... TSingh and ML Sim are w ith th e BT A sian R esearch C entre, C y berjay a, Malay sia TA BL EI WO RLD WID E MO BIL E TE R MIN AL SA LES (IN MIL L IO NS) ...

Effect of different modes of rolling deformation and its role in the development of crystallograp... more Effect of different modes of rolling deformation and its role in the development of crystallographic texture has been studied for pure Cu, and Cu(Cr) and Cu(P) alloys with a view to obtain a very fine grained microstructure and very weak texture after annealing. Results indicate that ...

Fortschritte der Physik/Progress of Physics, 1993

... (3.31) diverges at t, -+ - co. Finally, we consider the stiff matter ( p = e) solutions which... more ... (3.31) diverges at t, -+ - co. Finally, we consider the stiff matter ( p = e) solutions which are given by R4 = 42' + Ro4 (3.32) (3.33) ... 4.1. Bianchi type-I model The Bianchi type-I metric is given by ds2 = dt' - Ri2(t) (axi)', i = 1, 2, 3 (4.1.1) with the corresponding field equations ...

Automatica, 2007

The objective of this paper is to propose an approach to robust stabilization of systems which ar... more The objective of this paper is to propose an approach to robust stabilization of systems which are composed of linear subsystems coupled by nonlinear time-varying interconnections satisfying quadratic constraints. The proposed algorithms, which are formulated within the convex optimization framework, employ linear dynamic feedback structure involving local Luenberger-type observers. It is also shown how the new methodology can produce improved results if interconnections have linear parts that are known a priori. Examples of output stabilization of inverted pendulums and decentralized control of a platoon of vehicles are used to illustrate the applicability of the design method.

ocis.org.nz

Utilizing a case studies approach, 72 in-depth interviews were conducted to explore the conflict ... more Utilizing a case studies approach, 72 in-depth interviews were conducted to explore the conflict between the pursuit of graduate education and the traditional role expectations for women in three distinct cultures. Examining the experience of graduate students in Jamaica, India ...

This paper presents two techniques for the determination of modal weights for the design of robus... more This paper presents two techniques for the determination of modal weights for the design of robust input shapers for multi-mode systems. The weights for the first technique are derived based on the scaling factor for the potential energy in each mode, such that the modal displacement is the same. The second technique exploits the modal cost analysis which uses the angle between the right eigenvectors and the row vectors of the output matrix to determine the contribution of each mode to the output. Two examples are used to illustrate the improvement in performance of the modal weighted minimax shapers compared to the traditional minimax shaper which equally weighs all the modes.

Astrophysics and Space Science, 1983

Abstract. Solutions of Brans-Dicke field equations are obtained when the source of the gravitatio... more Abstract. Solutions of Brans-Dicke field equations are obtained when the source of the gravitational field is a perfect fluid with pressure equal to energy density and the metric is cylindrically symmetric of Marder-type. Various physical and geometrical properties of the model have been ...

Roughly 60% of the Earth's outer surface is comprised of oceanic crust formed by volcanic process... more Roughly 60% of the Earth's outer surface is comprised of oceanic crust formed by volcanic processes at mid-ocean ridges (MORs). Although only a small fraction of this vast volcanic terrain has been visually surveyed and/or sampled, the available evidence suggests that explosive eruptions are rare on MORs, particularly at depths below the critical point for

Dynamics and Stability of Systems, 1991

ABSTRACT

Psychological Science, 24(6), 1060-1062, Jun 7, 2013

Social meaning of ambiguous sounds influences retrospective duration judgments Social scientists ... more Social meaning of ambiguous sounds influences retrospective duration judgments Social scientists have described noise as "sound out of place" (Bailey 1996: 50). This implies our experience of a stimulus is not simply a reflection of its intrinsic properties but depends on the social-contextual meanings attributed to it. Following Bruner (Bruner, 1957; Bruner & Goodman, 1947), psychology has confirmed the importance of social meaning for perception-especially visual information processing (Balcetis & Lassiter, 2010). Here we