4781   αC Helix as a Switch in the Conformational Transition of Src/CDK-like Kinase Domains αC Helix as a Switch in the Conformational Transition of Src/CDK-like Kinase Domains He Huang†, Ruijun Zhao‡, Bradley M. Dickson†, Robert D. Skeel‡, and Carol Beth Post*†    2012 One mechanism of regulating the catalytic activity of protein kinases is through conformational transitions. Despite great diversity in the structural changes involved in the transitions, a certain set of changes within the kinase domain (KD) has been observed for many kinases including Src and CDK2. We investigated this conformational transition computationally to identify the topological features that are energetically critical to the transition. Results from both molecular dynamics sampling a... 查看全文

4782   Deformation of \mathfraksl (2)\mathfrak{sl}\, (2) and \mathfrakosp (1|2)\mathfrak{osp}\, (1|2)-modules of symbols Deformation of \mathfraksl (2)\mathfrak{sl}\, (2) and \mathfrakosp (1|2)\mathfrak{osp}\, (1|2)-modules of symbols Imed Basdouri;Mabrouk Ben Ammar    0 We consider the \mathfraksl (2)\mathfrak{sl}\, (2)-module structure on the spaces of symbols of differential operators acting on the spaces of weighted densities. We compute the necessary and sufficient integrability conditions of a given infinitesimal deformation of this structure and prove that any formal deformation is equivalent to its infinitesimal part. We study also the super analogue of this problem getting the same results. 查看全文

4783   Oscillator with non-integer order nonlinearity and time variable parameters Oscillator with non-integer order nonlinearity and time variable parameters L. Cveticanin    0 In this paper, the vibrations of the oscillator with nonlinearity of integer or non-integer order and with mass variable parameters are considered. New appreciative analytical procedures are developed: first, based on the generating solution that is the exact analytic solution of the system with constant parameters and the second, based on the approximate solution in the form. of a trigonometric function with exact period of vibration of the system with constant parameters.... 查看全文

4784   Effects of reoxidation on the hot-carrier immunity of 0.6 μm MOSFETs with nitrided oxides Effects of reoxidation on the hot-carrier immunity of 0.6 μm MOSFETs with nitrided oxides    1990 The effects of rapid thermal reoxidation (RO) on the hot-carrier immunity of 0.6 μm MOSFETs with thin (approximately 13 nm) rapidly thermal nitrided (RTN) oxides is reported. The hot-carrier immunity is evaluated in terms of the threshold voltage shift, ΔVth, and the transconductance degradation, ΔGm/Gm(0), under worst case hot-carrier stress condition (with maximum substrate current Isub,max). It is found that subsequent in-situ RTO of RTN oxides enhances the hot-carrier immunity... 查看全文

4785   Accurate analog modeling of short channel FETs based on table lookup. Accurate analog modeling of short channel FETs based on table lookup.    1988 A table-lookup model for MOSFETs has been implemented in SPICE 3, to overcome the inadequacies of analytical models that are unable to represent short-channel effects. The model comprises a 2-D main table, a coarse 3-D subtable to incorporate substrate effects, and a table to interpolate between channel lengths. There are 370 data points stored altogether. The tables are constructed from the measurement of incremental parameters, and thus reproduce transconductance and output conductance accurat... 查看全文

4786   Electron velocity enhancement in laterally scaled GaN DH-HEMTs with fT of 260 GHz Electron velocity enhancement in laterally scaled GaN DH-HEMTs with fT of 260 GHz    2011 In this letter, we report the first experimental observation of electron velocity enhancement by aggressive lateral scaling of GaN HEMTs. Through reduction of the source-drain distance down to 170 nm using n+-GaN ohmic regrowth, 45-nm gate AlN/GaN/Al0.08Ga0.92N HEMTs exhibited an extremely small on resistance of 0.44 ω mm , a high maximum drain current density of 2.3 A/mm, a high peak extrinsic transconductance of 905 mS/mm, and a record fT f\max of 260/394 GHz. Delay time analysis showed ... 查看全文

4787   The Dual Space The Dual Space Jonathan S. Golan    0 Linear functionals and the dual space of a vector space are defined and characterized. Every vector space is shown to be canonically embeddable in its second dual. Maximal subspaces are characterized as kernels of nontrivial linear functionals. The trace of a square matrix is studied in detail. Over a field of characteristic 0, a square matrix is shown to have trace 0 if and only if it is the Lie product of two matrices. Taber’s theorem is establi... 查看全文

4788   Recessed-gate doped-channel hetero-MISFET's (DMTs) for high-speed laser driver IC application Recessed-gate doped-channel hetero-MISFET's (DMTs) for high-speed laser driver IC application    1993 Recessed-gate DMTs (doped-channel hetero-MISFETs) with i-AlGaAs/n-GaAs structure and pseudomorphic i-AlGaAs/n-InGaAs/i-GaAs structure have been developed. Broad plateaus in gm and fT provide evidence that the DMTs make the devices suitable for high-speed large-signal operation. GaAs DMTs with 0.35 μm-length have gate turn on voltage of 0.7 V, maximum transconductance of 320 mS/mm and fT of 41 GHz. Pseudomorphic DMTs have gate turn on voltage of 0.9 V, maximum transconductance of 320 mS/mm, fT... 查看全文

4789   Enhancement-and depletion-mode GaAs MESFETs grown by laser-assisted MOVPE Enhancement-and depletion-mode GaAs MESFETs grown by laser-assisted MOVPE    1989 We have fabricated a pair of GaAs MESFETs operating in different modes, i.e., enhancement and depletion modes, on a single epitaxial wafer on the basis of laser-assisted metalorganic vapor phase epitaxy using tetramethylsilane as a photosensitive n-type dopant. The threshold voltages for an enhancement-mode MESFET fabricated on a laser-unirradiated part (n = 3.5 × 1016 cm-3) and a depletion-mode MESFET on a laser-irradiated part (n+ = 4.5 × 1017 cm-3) were +0.10 and -0.65 V, respecti... 查看全文

4790   Fabrication of enhancement-mode AlGaN/GaN MISHEMTs by using fluorinated Al2O3 as gate dielectrics Fabrication of enhancement-mode AlGaN/GaN MISHEMTs by using fluorinated Al2O3 as gate dielectrics    2011 High-performance enhancement-mode (E-mode) AlGaN/GaN metal-insulator- semiconductor HEMTs (MISHEMTs) were realized by using fluorinated Al 2O3 thin films as gate dielectrics. The depth profile of Fluoride atoms determined by X-ray photoelectron spectroscopy showed that the fluorine (F) ions were incorporated into the surface (approximately 2 nm) of the Al2O3 gate dielectrics. With proper amount of F-ion incorporation, the threshold voltage of MISHEMTs shifted from-4.8 to 0.11 V, converting deple... 查看全文

4791   Analysis and modeling of depletion-mode MOS transistors Analysis and modeling of depletion-mode MOS transistors    1996 Depletion mode MOSFETs are widely used in MOS - LSI/VLSI circuits as load elements. The main advantages offered by these devices are: Higher packaging density, Improved performance, Reduced power consumption, etc. Masuhara et. al (1972) developed a model for analysis of this device as an enhancement mode MOSFET. The model was adequate for analysis of lightly-doped, shallow-implanted channels. Subsequently, a more rigorous analysis was put forth by HAKEN for larger doping and deep channels. The a... 查看全文

4792   Easy-care wool woven products Easy-care wool woven products    2008 查看全文

4793   Cloning of the Genes for and Characterization of the Early Stages of Toluene and o-Xylene Catabolism in Pseudomonas stutzeri OX1 Cloning of the Genes for and Characterization of the Early Stages of Toluene and o-Xylene Catabolism in Pseudomonas stutzeri OX1    1996 查看全文

4794   (Banco de España) (Banco de España) Alfredo Martín Oliver, Vicente Salas Fumás, Banco De España, Jesús Saurina, Jel D G    0 This paper investigates the existence and determinants of interest rates dispersion in loans and deposits of Spanish banks. A unique feature of the research is that it covers a whole industry (thirty products and two hundred banks) from 1989 to 2003. We find that: i) interest rates dispersion is a persistent phenomena in loans and deposits markets; ii) the differences across products in the observed dispersion can be explained as a function of variables that affect the private net benefits of co 查看全文

4795   Mediators of induced pluripotency and their role in cancer cells – current scientific knowledge and future perspectives Mediators of induced pluripotency and their role in cancer cells – current scientific knowledge and future perspectives ROLF UWE FUuml;LBIER, JOERG-MARKUS HITZ and THORSTEN SELLHORN    2012 The discovery that overexpression of the transcription factors Oct4, Sox2, Klf4 and c-Myc reprograms differentiated cells into “induced pluripotent stem cells” (iPSCs) has extended our understanding of mechanisms required to maintain stem cell pluripotency and to drive differentiation. Subsequently, additional factors have been discovered that are able to induce a pluripotent state. Recently several groups have succeeded in reprogramming cancer cells to iPSC-like induced pluripotent ... 查看全文

4796   Machinery, Monstrosity, and Bestiality: An Analysis of Repulsion in Kierkegaard's Practice in Christianity Machinery, Monstrosity, and Bestiality: An Analysis of Repulsion in Kierkegaard's Practice in Christianity TED COHEN    2012 In reaction to a particularly scathing review of his Practice in Christianity, Kierkegaard postulated what he called a ‘preacher-machine.’ As we will see, the preacher-machine is only one type of character-machine, for, in Practice in Christianity, there are five other such machines. Starting up these character-machines will allow for an analysis of the repulsion of the God-man, Christ himself. This repulsion is important because Kierkegaard claims that it is the condition for the em... 查看全文

4797   Combining queueing networks and web mining techniques for web performance analysis Combining queueing networks and web mining techniques for web performance analysis    2005 The growing interest in Web applications that satisfy end-to-end Quality of Service (QoS) requirements is leading many organizations to build and analyze performance behavior. models. In this direction, Web usage mining techniques may help in the automatic construction of user profiles from Web access logs. However, their use has been mainly limited to customer relationship management (CRM) issues and to market analyses. The aim of this paper is to explain how Web usage mining can be combined wi... 查看全文

4798   Choroidal and optic disc metastases in a man with metachronous and metastatic breast carcinoma Choroidal and optic disc metastases in a man with metachronous and metastatic breast carcinoma Vijay R. Kini, Julia R. White, Eric M. Horwitz, Carl F. Dmuchowski, Alvaro A. Martinez and Frank A.    2007 查看全文

4799   Equivalence of the Local Markov Inequality and a Kolmogorov Type Inequality in the Complex Plane Equivalence of the Local Markov Inequality and a Kolmogorov Type Inequality in the Complex Plane Leokadia Białas-Cież;Raimondo Eggink    0 We prove that a compact subset of the complex plane satisfies a local Markov inequality if and only if it satisfies a Kolmogorov type inequality. This result generalizes a theorem established by Bos and Milman in the real case. We also show that every set satisfying the local Markov inequality is a sum of Cantor type sets which are regular in the sense of the potential theory. 查看全文

4800   Entanglement entropy of 3-d conformal gauge theories with many flavors Entanglement entropy of 3-d conformal gauge theories with many flavors Igor R. Klebanov, Silviu S. Pufu, Subir Sachdev;Benjamin R. Safdi    2012 Three-dimensional conformal field theories (CFTs) of deconfined gauge fields coupled to gapless flavors of fermionic and bosonic matter describe quantum critical points of condensed matter systems in two spatial dimensions. An important characteristic of these CFTs is the finite part of the entanglement entropy across a circle. The negative of this quantity is equal to the finite part of the free energy of the Euclidean CFT on the three-sphere, and it has been pr... 查看全文

4801   Analysis of a hyperbolic-parabolic type system for image inpainting Analysis of a hyperbolic-parabolic type system for image inpainting Zheng Meng Jin;Xiao Ping Yang    0 In this paper we consider the initial boundary value problem of a hyperbolic-parabolic type system for image inpainting in a 2-D bounded domain, and establish the existence of weak solutions to the system by employing the method of vanishing viscosity. 查看全文

4802   Considering and comparing regeneration in natural and man-made stands in northern Iran Considering and comparing regeneration in natural and man-made stands in northern Iran Mir Mozaffar Fallahchai    2012 In this study the regeneration diversity of Syahkal forests afforestated and natural stands in north of Iran was studied and compared from the point of view of evenness and diversity index. In order to accomplish this study two natural and man-made stands that almost are located in the same height above the sea level were chosen. The area of each stand was 30 ha and the inventory was done by the random-systematic method with a 5R land measurement (500 m2) selecte... 查看全文

4803   Mapping of averages in nonextensive thermodynamics Mapping of averages in nonextensive thermodynamics R. G. Zaripov    0 Mapping of averages with unnormalized distribution onto averages with normalized distribution of physical quantities in nonextensive thermodynamics is considered. The effective microscopic entropy and the Hamiltonian that lead to the well-known equilibrium nonextensive thermodynamics equations are introduced. Equations for the distribution and density operator with the effective Hamiltonian are presented. 查看全文

4804   Order−Disorder Transitions in Block Copolymer Electrolytes at Equilibrium with Humid Air Order−Disorder Transitions in Block Copolymer Electrolytes at Equilibrium with Humid Air Moon Jeong Park† and Nitash P. Balsara*†    2009 The effect of sulfonation level and domain size of hydrophilic channels on humidity-induced phase transitions in poly(styrenesulfonate?methylbutylene) (PSS?PMB) block copolymers was studied as a function of the relative humidity (RH) and temperature of the surrounding air by a combination of water uptake measurements and in situ small-angle neutron scattering. The equality of the chemical potential of water in the gas and polymer phases was exploited to determine the change in the partial molar ... 查看全文

4805   Pietro Burgatti and His Studies on Mechanics Pietro Burgatti and His Studies on Mechanics Paolo Freguglia;S;ro Graffi    0 A brief reconstruction is attempted of the scientific figure of Pietro Burgatti (1868–1938) by giving some detail on his more significant contributions to mathematics: general vector calculus, hyperbolic partial differential equations, analytical mechanics. An attempt is also made to put Burgatti’s contributions into the perspective of Italian mathematics of his times. 查看全文

4806   Plasma-induced charging damage in p+-polysilicon PMOSFETs Plasma-induced charging damage in p+-polysilicon PMOSFETs    1997 This paper reports plasma-induced charging damage in p+- polysilicon PMOSFETs as a function of amount of boron penetration. Plasma charging effect is amplified using contact antenna structures with ratios of 10, 100 and 1K. The antenna is connected to the gate of a 25μm/0.8μm PMOSFET from a matched pair to minimized device performance deviation due to process non-uniformity. It is found that initial device characteristics, such as threshold voltage, transconductance and subthreshold swing,... 查看全文

4807   Response of Disordered Polymer Networks to External Fields:  Regular Lattices Built from Complex Subunits Response of Disordered Polymer Networks to External Fields:  Regular Lattices Built from Complex Subunits Andrew A. Gurtovenko*†‡ and Alexander Blumen†    2002 Based on recent experiments, inhomogeneous polymer networks can be viewed as densely cross-linked regions embedded in more dilute surroundings. Here we put forward systems that model such situations, namely regular lattices built from complex subunits. The model takes into account both the disorder inside the subunits (cross-link agglomerations) and the connectivity between them. Combining analytical and numerical methods, we propose a general approach for determining the Rouse dynamics of such 查看全文

4808   TIME and TAXES TIME and TAXES Thathan Premkumar, Raffaele Mezzenga and Kurt E. Geckeler    2007 查看全文

4809   Interaction parameters of carbon in liquid iron and the thermodynamics of carbon and oxygen in alloyed iron melts Interaction parameters of carbon in liquid iron and the thermodynamics of carbon and oxygen in alloyed iron melts K. V. Malyutin;S. N. Paderin    2007 查看全文

4810   Room temperature fabrication of enhancement/depletion mode thin film transistors based on amorphous indium oxide channel Room temperature fabrication of enhancement/depletion mode thin film transistors based on amorphous indium oxide channel    2009 We develop a fabrication method to fabricate enhancement/depletion mode thin film transistors (TFTs) based on room temperature reactive sputtered indium oxide channel. The drain-source current on/off modulation ratio (I on/Ioff) is as high as ∼106 for all devices. The resulting TFTs exhibit good operating properties with near-zero threshold voltage ∼ 0.92V for enhancement mode TFTs and ∼ -4V for depletion mode TFTs. The transconductance of TFT is estimated as 0.6mS/mm and the field-e... 查看全文

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