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journal of Semiconductors 2010年第11期31卷 5-8页

作者： Amit Chaudhry j.n.Roy Institute of Engineering and Technology Panjab University Solar Semiconductor Pvt.Ltd.

A model has been developed to study the effect of depletion and energy quantization at the poly-silicon /oxide interface on the behavior of a nanometer scale n-MOSFET.A model of inversion charge density,including the inversion layer quantization using the variation approach in the substrate,has also been *** the exact calculations of the polygate potential under the depletion and quantization conditions,a C-V model has been developed. All the results have been compared with the numerical models reported in existing literature and they show good agreement.

关键词： BSIM inversion layers MOS devices quantization poly-depletion poly-quantization

An enhanced close-in phase noise LC-VCO using parasitic V-nPn transistors in a CMOS process

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journal of Semiconductors 2009年第8期30卷 123-126页

作者：高佩君 Oh n j 闵昊 State Key Laboratory of ASIC & System Fudan University Department of Electronic Engineering Chungju National University

A differential LC voltage controlled oscillator （VCO） employing parasitic vertical-nPn （V-nPn） transistors as a negative gm-cell is presented to improve the close-in phase noise. The V-nPn transistors have lower flicker noise compared to MOS transistors. DC and AC characteristics of the V-nPn transistors are measured to facilitate the VCO design. The proposed VCO is implemented in a 0.18 μm CMOS RF/mixed signal process, and the measurement results show the close-in phase noise is improved by 3.5-9.1 dB from 100 Hz to 10 kHz offset compared to that of a similar CMOS VCO. The proposed VCO consumes only 0.41 mA from a 1.5 V power supply.

关键词： close-in phase noise vertical-nPn flicker noise VCO

Strain gradient plasticity: energetic or dissipative?

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Acta Mechanica Sinica 2015年第4期31卷 465-472页

作者： n.A.Fleck j.R.Willis Department of Engineering University of Cambridge Department of Applied Mathematics and Theoretical Physics University of Cambridge

Abstract For an infinite slab of strain gradient sensitive material subjected to plane-strain tensile loading, compu- tation established and analysis confirmed that passivation of the lateral boundaries at some stage of loading inhibits plastic deformation upon further loading. This result is not surprising in itself except that, remarkably, if the gradient terms contribute to the dissipation, the plastic deformation is switched off completely and only resumes at a clearly defined higher load, corresponding to a total strain ec, say. The analysis presented in this paper confirms the delay of plastic deformation following passivation and determines the exact manner in which the plastic flow resumes. The plastic strain rate is continuous at the exact point ec of resumption of plastic flow and, for the first small increment Ae = e - ec in the imposed total strain, the corresponding increment in plastic strain, AeP, is proportional to （Ae）2. The constant A in the relation AeP（0） = A（Ae）2, where AeP（0） denotes the plastic strain increment at the centre of the slab, has been determined explicitly; it depends on the hardening modulus of the material. The presence of energetic gradient terms has no effect on the value of ec unless the dissipative terms are absent, in which case passivation reduces the rate of plastic deformation but introduces no delay. This qualitative effect of dissipative gradient terms opens the possibility of experimen- tal discrimination of their presence or absence. The analysisemploys an incremental variational formulation that is likely to find use in other problems.

关键词： Strain gradient plasticity Boundary passivation Incremental variational principle

P-type SnO thin films prepared by reactive sputtering at high deposition rates

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journal of Materials Science & Technology 2019年第8期35卷 1706-1711页

作者： C.Guillén j.Herrero Department of Energy CIEMATAvda. Complutense 40Edif. 42Madrid28040Spain

SnO is an ideally suitable p-type conductive material, with large hole mobility, and has attracted great interest in connection with next-generation electronic applications. In the present work, tin oxide(SnOx)thin films were deposited on unheated soda lime glass substrates by reactive DC sputtering from a pure Sn target. The structural, optical and electrical properties of the films were analysed as a function of the oxygen partial pressure in the sputtering atmosphere and of the post-deposition annealing temperature in air. A structural analysis was carried out using Raman spectroscopy and X-ray diffraction. Optical and electrical characterizations were performed using photo-spectrometry and Hall effect measurements,respectively. The films grown at room temperature and low oxygen pressures reached high deposition rates of above 45 nm/min, showing poorly crystalline SnO and low transparency. Subsequent heating to 350℃ allowed to achieve a more crystalline tetragonal SnO with an average visible transmittance of 65%,a p-type conductivity of 0.8 S/cm, and a hole mobility of 3.5 cm^2/(V s).

关键词： Transparent conducting oxide (TCO) nanocrystalline structure Optical absorption Hole mobility

THE BAnACH-LIE GROUP OF LIE TRIPLE AUTOMORPHISMS OF An H^＊-ALGEBRA^＊

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Acta Mathematica Scientia 2010年第4期30卷 1219-1226页

作者： A.j.Calderón Martín C.Martín González Departamento de Matemáticas Universidad de Cádiz Departamento de Algebra Geometría y Topología Universidad de Málaga

We study the Banach-Lie group Ltaut（A） of Lie triple automorphisms of a complex associative H^＊-algebra A. Some consequences about its Lie algebra, the algebra of Lie triple derivations of A, Ltder（A）, are obtained. For a topologically simple A, in the infinite-dimensional case we have Ltaut（A）0 = Aut（A） implying Ltder（A） = Der（A）. In the finite-dimensional case Ltaut（A）0 is a direct product of Aut（A） and a certain subgroup of Lie derivations δ from A to its center, annihilating commutators.

关键词： Banach-Lie group Lie triple automorphism Lie triple derivation

K-P-Burgers equation in negative ion-rich relativistic dusty plasma including the effect of kinematic viscosity

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Chinese Physics B 2016年第10期25卷 215-221页

作者： A n Dev M K Deka j Sarma D Saikia n C Adhikary Department of Mathematics Siksha ‘O' Anusandhan University Department of Applied Sciences Institute of Science and Technology Gauhati University Department of Mathematics R G Baruah College Physical Sciences Division Institute of Advanced Study in Science and TechnologyVigyan Path Paschim Boragaon

The stationary solution is obtained for the K–P–Burgers equation that describes the nonlinear propagations of dust ion acoustic waves in a multi-component, collisionless, un-magnetized relativistic dusty plasma consisting of electrons, positive and negative ions in the presence of charged massive dust grains. Here, the Kadomtsev–Petviashvili(K–P) equation, threedimensional(3D) Burgers equation, and K–P–Burgers equations are derived by using the reductive perturbation method including the effects of viscosity of plasma fluid, thermal energy, ion density, and ion temperature on the structure of a dust ion acoustic shock wave(DIASW). The K–P equation predictes the existences of stationary small amplitude solitary wave,whereas the K–P–Burgers equation in the weakly relativistic regime describes the evolution of shock-like structures in such a multi-ion dusty plasma.

关键词： K–P–Burgers equation negative ion relativistic plasma reductive perturbation method

Small extrachromosomal circular DnA in amyotrophic lateral sclerosis matter

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neural Regeneration Research 2025年第5期20卷 1411-1413页

作者： Marcos j.Arauzo-Bravo Daniela Gerovska Matthias Schwab Alexandra Kretz Computational Biology and Systems Biomedicine Biodonostia Health Research InstituteSan SebastianSpain Basque Foundation for Science IKERBASQUEBilbaoSpainMax Planck Institute for Molecular BiomedicineComputational Biology and Bioinformatics GroupMünsterNorth Rhine-WestphaliaGermany Department of Cell Biology and Histology Faculty of Medicine and NursingUniversity of Basque Country(UPV/EHU)LeioaSpain Department of neurology Jena University HospitalJenaThuringiaGermany

Comprehensive studies identify motor neuron spectrum disorders including amyotrophic lateral sclerosis(ALS)as globally rising fatal disorders with the highest prevalence in aging populations,influenced by ethnicity and ancestry(GBD 2016 Motor neuron Disease Colla borators,2018).While~10% of diagnoses involve a family history(fALS),most cases are considered sporadic(sALS).However,population-based studies suggest that even cases without a common index mutation impart heritability(Ryan et al.,2019),indicating a crucial role of rare and as yet unknown genetic denominators.

关键词： amyotrophic sclerosis

HELP-WSn-A novel Adaptive Multi-Tier Hybrid Intelligent Framework for QoS Aware WSn-IoT networks

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Computers, Materials & Continua 2022年第5期71卷 2107-2123页

作者： j.Sampathkumar n.Malmurugan Mahendra College of Engineering Salem636106India

Wireless Sensor network is considered as the intermediate layer in the paradigm of Internet of things(IoT)and its effectiveness depends on the mode of deployment without sacrificing the performance and energy *** provides ubiquitous access to location,the status of different entities of the environment and data acquisition for long term IoT *** the high performance of the WSn-IoT network remains to be a real challenge since the deployment of these networks in the large area consumes more power which in turn degrades the performance of the ***,developing the robust and QoS(quality of services)aware energy-efficient routing protocol for WSn assisted IoT devices needs its brighter light of research to enhance the network *** paper proposed a Hybrid Energy Efficient Learning Protocol(HELP).The proposed protocol leverages the multi-tier adaptive framework to minimize energy *** works in a two-tier mechanism in which it integrates the powerful Extreme Learning Machines for clustering framework and employs the zonal based optimization technique which works on hybrid Whale-dragonfly algorithms to achieve high QoS *** proposed framework uses the sub-area division algorithm to divide the network area into different *** learning machines(ELM)which are employed in this framework categories the Zone’s Cluster Head(ZCH)based on distance and *** categorizing the zone’s cluster head,the optimal routing path for an energy-efficient data transfer will be selected based on the new hybrid whale-swarm *** extensive simulations were carried out using OMnET++-Python userdefined plugins by injecting the dynamic mobility models in networks to make it a more realistic ***,the effectiveness of the proposed HELP is examined against the existing protocols such as LEACH,M-LEACH,SEP,EACRP and SEEP and results show the proposed framework has outperformed other techniques in terms

关键词： Internet of things extreme learning machines zones’cluster head hybrid whale-swarm

Modified Visual Geometric Group Architecture for MRI Brain Image Classification

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Computer Systems Science & Engineering 2022年第8期42卷 825-835页

作者： n.Veni j.Manjula Department of Electronics and Communication Engineering SRM Institute of Science and TechnologyChennaiTamil NaduIndia Department of Electronics and Communication Engineering SRM Institute of Science and TechnologyChennaiIndia

The advancement of automated medical diagnosis in biomedical engineering has become an important area of *** classification is one of the diagnostic approaches that do not require segmentation which can draw quicker *** proposed non-invasive diagnostic support system in this study is considered as an image classification system where the given brain image is classified as normal or *** ability of deep learning allows a single model for feature extraction as well as classification whereas the rational models require separate *** of the best models for image localization and classification is the Visual Geometric Group(VGG)*** this study,an efficient modified VGG architecture for brain image classification is developed using transfer *** pooling layer is modified to enhance the classification capability of VGG *** show that the modified VGG architecture outperforms the conventional VGG architecture with a 5%improvement in classification accuracy using 16 layers on MRI images of the REpository of Molecular BRAin neoplasia DaTa(REMBRAnDT)database.

关键词： MRI brain images image classification deep learning VGG architecture pooling layers

Site Selective Excitation and Energy Transfer in LiKGdF_5 Crystal Co-doped with Er^(3+) and Tb (3+)

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journal of Rare Earths 2004年第1期22卷 22-26页

作者：尹民 Khaidukov n M Krupa j C Structure Research Laboratory Kurnakov Institute of General and Inorganic Chemistry Institut de Physique nucléaire

Crystals of LiKGdF 5∶Er 3+, Tb 3+ grown by the hydrothermal synthesis technique with concentrations of 2% and 0.4% were analysed. By using site selective excitation measured at low temperature, luminescence and excitation spectra from Er 3+ and Tb 3+ ions embedded in LiKGdF 5 were clearly separated. The lifetimes of the emitting levels 4S 3/2 of Er 3+ and 5D 4 of Tb 3+ were also determined. Following the site selective spectroscopy study, the dominant energy transfer process from Tb 3+ to Er 3+ in the crystal was then investigated via transient experiments.

关键词： optics condensed matter physics energy transfer luminescence LiKGdF 5∶Er3+, Tb3+ rare earths