Gus Adi - Academia.edu (original) (raw)

Papers by Gus Adi

Combined input and output queued (CIOQ) architectures with a moderate fabric speedup S&am... more Combined input and output queued (CIOQ) architectures with a moderate fabric speedup S>1 have come to play a major role in the design of high performance switches. The switch policy that controls such switches must consist of two components. A buffer management policy that controls admission to buffers, and a scheduling policy that schedules the transfer of packets from input

This work was supported by the Israel Academy of Sciences and Humanities (335/00-1). These experi... more This work was supported by the Israel Academy of Sciences and Humanities (335/00-1). These experiments comply with Principles of Animal Care, National Institutes of Health publication no. 86-23, revised in 1985, and also with the current laws of the State of Israel. We thank Gustavo Glusman for technical assistance and Alain Hamon for generous help with setting up the electrophysiology of the single sensory afferent to giant interneuron synapse. We also thank R. B. Levine and J. C.

Japanese Journal of Applied Physics, 2010

This study explores the transition of shear force spectral fingerprints during tantalum (Ta) and/... more This study explores the transition of shear force spectral fingerprints during tantalum (Ta) and/or tantalum nitride (TaN) chemical mechanical planarization on patterned wafers using a polisher and tribometer that has the unique ability to measure shear force and down force in real-time. Fast Fourier Transformation is performed to convert the raw force data from time domain to frequency domain and

The alternating-direction-implicit finite-difference time-domain method (ADI-FDTD) is considered ... more The alternating-direction-implicit finite-difference time-domain method (ADI-FDTD) is considered as a very efficient algorithm. The key problem of the implementation of the ADI-FDTD method is to solve the tridiagonal matrix system. Two numerical algorithms for the tridiagonal matrix system are analyzed in detail in this paper. The interpretations for the stability of the algorithms are also given clearly

Physical Review B, 2003

The temperature dependence of the nuclear and magnetic structure of the cobalt oxychloride Sr2CoO... more The temperature dependence of the nuclear and magnetic structure of the cobalt oxychloride Sr2CoO3Cl has been studied using neutron powder diffraction. The material crystallizes with a structure related to K2NiF4 and contains two-dimensional (2D) layers of CoO5 square pyramids that are segregated along z by alternate rocksalt SrCl and SrO blocks. The development of magnetic Bragg scattering indicates that the compound orders antiferromagnetically with a TN=330(5) K. The phase adopts a collinear magnetic structure related to the nuclear cell by the propagation vector k=(1/2, 1/2, 0) with the cobalt spins aligned along the a axis of the magnetic cell. The ordered moment μ=2.82(3)μB, refined at 3 K, is consistent with a high-spin (t42ge2g) electron configuration for the Co(III) ions. The onset of long-range magnetic order is characterized by a three-dimensional transition and is accompanied by anomalous behavior in the Co environment with distinct magnetostriction effects observed in the interlayer Co to Co exchange pathways. The transition is preceded by diffuse magnetic scattering arising from short-range in-plane correlations, with significant diffuse intensity observed up to the maximum temperature studied of 378 K. Magnetic susceptibility measurements indicate that the onset of significant 2D interactions occurs at T≈500 K. The diffuse intensity can be fitted using the Warren function to give a maximum in the 2D correlation length ξ of 40(4) Å just above TN. Below TN diffuse scattering coexists with magnetic Bragg scattering, indicating that the transition to long-range order is hindered most probably due to the presence of stacking disorder between the antiferromagnetic sheets.

Irrigation Science, 2008

A field experiment was carried out over 2 years to investigate the effect of partial root-zone ir... more A field experiment was carried out over 2 years to investigate the effect of partial root-zone irrigation applied using drip irrigation on the water use and yield of cotton (Gossypium hirsutum) in oasis fields of arid north-west China. Two irrigation treatments, i.e., conventional drip irrigation (CDI, both sides of plant row watered) or alternate drip irrigation (ADI, both sides of plant row alternatively watered) were applied under plastic mulch. Three irrigation levels (i.e., 15, 22.5, 30 mm during 2004 and 12, 18, 24 mm during 2005) were applied at each irrigation. Monitoring of soil water contents in the ADI treatment indicated a change in root-zone uptake in response to the irrigation method, although there existed some lateral soil water movement from the wetted side to the dry side after each watering. Stomatal conductance in ADI was lower than that of CDI when compared at the same irrigation level. Reduced stomatal conductance and water loss resulted in higher water use efficiency (WUE) in the ADI treatment. About 31-33% less total irrigation water was applied using the ADI method when compared to that of the CDI treatment with a similar seed cotton yield. ADI also yielded 11% more pre-frost seed cotton than CDI in 2005, indicating a better lint quality and higher price. These results suggest that ADI should be a useful water-saving irrigation method in arid oasis fields where cotton production is heavily dependent on irrigation and water resources are scarce.

We analyze quasi-phase-matched conversion efficiency of the five possible types of periodic two-d... more We analyze quasi-phase-matched conversion efficiency of the five possible types of periodic two-dimensional nonlinear structures: Hexagonal, square, rectangular, centred rectangular and oblique. The frequency conversion efficiency, as a function of the two-dimensional quasi-phase-matching order, is determined for the general case. Furthermore, it is demonstrated for the case of a circular motif. This enables to determine the optimal motif radius for achieving the highest conversion efficiency. As an example for experimental techniques, we discuss the fabrication and nonlinear optical characterization of a rectangularly-poled stoichiometric LiTaO3 crystal.

Solid State Phenomena, 2009

Cell Death and Differentiation, 2009

Cell death is essential for a plethora of physiological processes, and its deregulation character... more Cell death is essential for a plethora of physiological processes, and its deregulation characterizes numerous human diseases. Thus, the in-depth investigation of cell death and its mechanisms constitutes a formidable challenge for fundamental and applied biomedical research, and has tremendous implications for the development of novel therapeutic strategies. It is, therefore, of utmost importance to standardize the experimental procedures that identify dying and dead cells in cell cultures and/or in tissues, from model organisms and/or humans, in healthy and/or pathological scenarios. Thus far, dozens of methods have been proposed to quantify cell death-related parameters. However, no guidelines exist regarding their use and interpretation, and nobody has thoroughly annotated the experimental settings for which each of these techniques is most appropriate. Here, we provide a nonexhaustive comparison of methods to detect cell death with apoptotic or nonapoptotic morphologies, their advantages and pitfalls. These guidelines are intended for investigators who study cell death, as well as for reviewers who need to constructively critique scientific reports that deal with cellular demise. Given the difficulties in determining the exact number of cells that have passed the point-of-no-return of the signaling cascades leading to cell death, we emphasize the importance of performing multiple, methodologically unrelated assays to quantify dying and dead cells.

Combined input and output queued (CIOQ) architectures with a moderate fabric speedup S&am... more Combined input and output queued (CIOQ) architectures with a moderate fabric speedup S>1 have come to play a major role in the design of high performance switches. The switch policy that controls such switches must consist of two components. A buffer management policy that controls admission to buffers, and a scheduling policy that schedules the transfer of packets from input

This work was supported by the Israel Academy of Sciences and Humanities (335/00-1). These experi... more This work was supported by the Israel Academy of Sciences and Humanities (335/00-1). These experiments comply with Principles of Animal Care, National Institutes of Health publication no. 86-23, revised in 1985, and also with the current laws of the State of Israel. We thank Gustavo Glusman for technical assistance and Alain Hamon for generous help with setting up the electrophysiology of the single sensory afferent to giant interneuron synapse. We also thank R. B. Levine and J. C.

Japanese Journal of Applied Physics, 2010

This study explores the transition of shear force spectral fingerprints during tantalum (Ta) and/... more This study explores the transition of shear force spectral fingerprints during tantalum (Ta) and/or tantalum nitride (TaN) chemical mechanical planarization on patterned wafers using a polisher and tribometer that has the unique ability to measure shear force and down force in real-time. Fast Fourier Transformation is performed to convert the raw force data from time domain to frequency domain and

The alternating-direction-implicit finite-difference time-domain method (ADI-FDTD) is considered ... more The alternating-direction-implicit finite-difference time-domain method (ADI-FDTD) is considered as a very efficient algorithm. The key problem of the implementation of the ADI-FDTD method is to solve the tridiagonal matrix system. Two numerical algorithms for the tridiagonal matrix system are analyzed in detail in this paper. The interpretations for the stability of the algorithms are also given clearly

Physical Review B, 2003

The temperature dependence of the nuclear and magnetic structure of the cobalt oxychloride Sr2CoO... more The temperature dependence of the nuclear and magnetic structure of the cobalt oxychloride Sr2CoO3Cl has been studied using neutron powder diffraction. The material crystallizes with a structure related to K2NiF4 and contains two-dimensional (2D) layers of CoO5 square pyramids that are segregated along z by alternate rocksalt SrCl and SrO blocks. The development of magnetic Bragg scattering indicates that the compound orders antiferromagnetically with a TN=330(5) K. The phase adopts a collinear magnetic structure related to the nuclear cell by the propagation vector k=(1/2, 1/2, 0) with the cobalt spins aligned along the a axis of the magnetic cell. The ordered moment μ=2.82(3)μB, refined at 3 K, is consistent with a high-spin (t42ge2g) electron configuration for the Co(III) ions. The onset of long-range magnetic order is characterized by a three-dimensional transition and is accompanied by anomalous behavior in the Co environment with distinct magnetostriction effects observed in the interlayer Co to Co exchange pathways. The transition is preceded by diffuse magnetic scattering arising from short-range in-plane correlations, with significant diffuse intensity observed up to the maximum temperature studied of 378 K. Magnetic susceptibility measurements indicate that the onset of significant 2D interactions occurs at T≈500 K. The diffuse intensity can be fitted using the Warren function to give a maximum in the 2D correlation length ξ of 40(4) Å just above TN. Below TN diffuse scattering coexists with magnetic Bragg scattering, indicating that the transition to long-range order is hindered most probably due to the presence of stacking disorder between the antiferromagnetic sheets.

Irrigation Science, 2008

A field experiment was carried out over 2 years to investigate the effect of partial root-zone ir... more A field experiment was carried out over 2 years to investigate the effect of partial root-zone irrigation applied using drip irrigation on the water use and yield of cotton (Gossypium hirsutum) in oasis fields of arid north-west China. Two irrigation treatments, i.e., conventional drip irrigation (CDI, both sides of plant row watered) or alternate drip irrigation (ADI, both sides of plant row alternatively watered) were applied under plastic mulch. Three irrigation levels (i.e., 15, 22.5, 30 mm during 2004 and 12, 18, 24 mm during 2005) were applied at each irrigation. Monitoring of soil water contents in the ADI treatment indicated a change in root-zone uptake in response to the irrigation method, although there existed some lateral soil water movement from the wetted side to the dry side after each watering. Stomatal conductance in ADI was lower than that of CDI when compared at the same irrigation level. Reduced stomatal conductance and water loss resulted in higher water use efficiency (WUE) in the ADI treatment. About 31-33% less total irrigation water was applied using the ADI method when compared to that of the CDI treatment with a similar seed cotton yield. ADI also yielded 11% more pre-frost seed cotton than CDI in 2005, indicating a better lint quality and higher price. These results suggest that ADI should be a useful water-saving irrigation method in arid oasis fields where cotton production is heavily dependent on irrigation and water resources are scarce.

We analyze quasi-phase-matched conversion efficiency of the five possible types of periodic two-d... more We analyze quasi-phase-matched conversion efficiency of the five possible types of periodic two-dimensional nonlinear structures: Hexagonal, square, rectangular, centred rectangular and oblique. The frequency conversion efficiency, as a function of the two-dimensional quasi-phase-matching order, is determined for the general case. Furthermore, it is demonstrated for the case of a circular motif. This enables to determine the optimal motif radius for achieving the highest conversion efficiency. As an example for experimental techniques, we discuss the fabrication and nonlinear optical characterization of a rectangularly-poled stoichiometric LiTaO3 crystal.

Solid State Phenomena, 2009

Cell Death and Differentiation, 2009

Cell death is essential for a plethora of physiological processes, and its deregulation character... more Cell death is essential for a plethora of physiological processes, and its deregulation characterizes numerous human diseases. Thus, the in-depth investigation of cell death and its mechanisms constitutes a formidable challenge for fundamental and applied biomedical research, and has tremendous implications for the development of novel therapeutic strategies. It is, therefore, of utmost importance to standardize the experimental procedures that identify dying and dead cells in cell cultures and/or in tissues, from model organisms and/or humans, in healthy and/or pathological scenarios. Thus far, dozens of methods have been proposed to quantify cell death-related parameters. However, no guidelines exist regarding their use and interpretation, and nobody has thoroughly annotated the experimental settings for which each of these techniques is most appropriate. Here, we provide a nonexhaustive comparison of methods to detect cell death with apoptotic or nonapoptotic morphologies, their advantages and pitfalls. These guidelines are intended for investigators who study cell death, as well as for reviewers who need to constructively critique scientific reports that deal with cellular demise. Given the difficulties in determining the exact number of cells that have passed the point-of-no-return of the signaling cascades leading to cell death, we emphasize the importance of performing multiple, methodologically unrelated assays to quantify dying and dead cells.