Effect of structured parameters on the hot-carrier immunity of transparent gate recessed channel (TGRC) MOSFET

In this work, the impact of parameter variation on hot-carrier effect immunity in transparent gate recessed channel (TGRC)—MOSFET based on the hydrodynamic energy transport model have been studied. The parameters of TGRC-MOSFET investigated include the oxide thickness, negative junction depth, and substrate doping. TCAD analysis shows the performance of TGRC-MOSFET in terms of transfer characteristics, transconductance, electric field, electron velocity, electron mobility and electron temperature. The simulation results indicate the improved hot-carrier immunity for TGRC-MOSFET in 30 nm device.

     

Analysis of novel transparent gate recessed channel (TGRC) MOSFET for improved analog behaviour

In this paper, a novel device structure called transparent gate recessed channel MOSFET (TGRC-MOSFET) is proposed to alleviate the hot carrier effects for the advanced nanometer process. TGRC-MOSFET involving a recessed channel and incorporates indium tin oxide as a transparent gate. TCAD analysis shows that the performance of TGRC-MOSFET surpasses conventional recessed channel (CRC)-MOSFET in terms of high I_ON/I_OFF ratio and better carrier transport efficiency in comparison to CRC-MOSFET. This simulation divulges the reduction in hot-carrier-effects metrics like electron velocity, electron temperature, potential, and electron mobility. Furthermore, the effect of gate length is observed on the analog behavior of TGRC-MOSFET. All the simulations have been done using DEVEDIT-3D and ATLAS device simulator. The work proposes the novel design for reduced hot carrier and low power switching applications.     

Assessment of analog RF performance for insulated shallow extension (ISE) cylindrical surrounding gate (CSG) MOSFET incorporating gate stack

In this paper, insulated shallow extension cylindrical surrounding gate (ISE-CSG) MOSFET with high-k gate stack has been proposed and extensively investigated. The performance of high-k ISE-CSG MOSFET has been compared with cylindrical surrounding gate MOSFET. ISE-CSG with high-k gate stack has number of desirable features at 30 nm regimes. The results reveal that ISE-CSG MOSFET with gate stack is more immune to short channel effects because of improved carrier transportation capability. It has been observed that high-k ISE-CSG MOSFET shows improved figure of merits as drive current (I_ON), I_ON/I_OFF ratio, transconductance (g_m), cutoff frequency f_T, transconductance generation factor, intrinsic gain (A_v), transconductance frequency product, gain transconductance frequency product and gain frequency product. ISE-CSG with high-k gives better control over the depletion region and therefore it is a suitable device for high speed, high frequency and analog/RF circuit applications.

     

两层模式的PB应用向三层结构迁移的若干问题研究

C／S和B／S两种体系结构各有优点，采用二者混合的结构能建立高效和实用的基于Intranet的企业信息系统，文章结合实例讨论PowerBuilder的C／S应用向这种结构迁移的若干问题，包括选择PB－IDT、子窗口设计优化，ActiveX及系统安全性等     

Application of rational function approximation technique to hybrid FE/BI/MLFMA for 3D scattering

In this article, the rational function approximation technique (RFAT) is applied to the hybrid finite‐element/boundary‐integral/multilevel fast multipole algorithm (FE/BI/MLFMA) to acquire wide‐band and wide‐angle backscatter radar‐cross‐section (RCS) by complex targets. The two approaches of using the rational function approximation technique, asymptotic waveform evaluation (AWE) and model‐based parameter estimation (MBPE), both have been investigated and compared by theoretical analysis and numerical experiments. The numerical results acquired by the developed computing algorithm of integrating the hybrid FE/BI/MLFMA with the RFAT are presented in the article, demonstrating that the rational function approximation technique can greatly speed up the hybrid FE/BI/MLFMA to acquire wide‐band and wide‐angle backscatter RCS by complex targets. © 2007 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2007.     

基于C/S和B/S构建的高校教务管理信息系统的研究

针对高校的教务管理工作强度大、效率低等特点,文章提出了基于C/S和B/S构建的高校教务管理信息系统的设计思路,从系统开发环境、系统功能模块、系统安全等方面论述了系统的实现方法。     

基于C／S及B／S模式的实验中心管理平台研究

C／S模式和B／S模式是当今实验中心管理平台的两种基本模式,两种模式各有优缺点,如何将两种模式有机地结合起来,互相补充,是当今实验室管理平台研究的热点之一。给出了一种基于C／S及B／S模式的实验中心管理平台,给出了具体的模块组成,对所需关键技术进行了讨论,由于两种模式的互补作用,使得实验室管理的科学化、现代化,运行的自动化和信息化成为可能。     

基于R/S方法的股票平均循环周期研究

针对中国股票市场的3个重点行业的长期记忆性和平均循环周期问题进行了研究.通过重标极差(R/S)方法来分析他们的长记忆性,在平均循环周期的估计上,使用了线性插值法来确定V统计量曲线的转折点,以及计算最小二乘法的误差来更清楚的确定R/S曲线转折点这两种方法,并将两者进行对照来估计周期,对各行业分析结果表明,得出中国股票3个行业市场都具有分形特征,其变化具有循环性.     

Medium-term effects of a two-desk sit/stand workstation on cognitive performance and workload for healthy people performing sedentary work: a secondary analysis of a randomised controlled trial

Implementing sit/stand workstations in sedentary work environments is a common way to reduce sedentary time, but their medium-term effect on cognitive performance is unclear. To address this circumstance, eighteen office workers participated in a two-arm, randomised controlled cross-over trial (ClinicalTrials.gov Identifier: NCT02825303), either working at a traditional (sit) or an interventional (sit/stand) workplace for 23 weeks. Cognitive performance (working speed, reaction time, concentration performance, accuracy), workload and relevant covariates (salivary cortisol level, heart rate, physical activity, sitting time) were measured pre- and post-intervention under laboratory conditions. MANOVA and RMANOVA results did not show differences in performance parameters and workload, respectively, between sit/stand and traditional workplace users. Differences in text editing accuracy and cortisol levels for sit/stand workstation users indicate potential connectivity to cognitive parameters which should be further examined with large-scale studies. Practitioner summary: Medium-term effects of working at sit/stand workstations on cognitive performance and workload are unexplored. This randomised controlled trial suggests that cognitive performance and workload are unaffected for sit/stand workstation users after 23?weeks of use. However, accuracy appeared to improve and physiological stress appeared to be altered.

Abbreviations: BMI: body mass index; IPAQ: International physical activity questionnaire; MET: metabolic equivalent of task; MANOVA: multivariate ANOVA; NASA TLX: NASA task load index; RMANOVA: repeated measures ANOVA     

基于B／S模式和J2EE架构的工商网站研究与设计

本文介绍了B／S结构的设计与实现以及J2EE架构的体系结构和优势,并结合实际经验,设计开发了基于B／S模式和J2EE架构的工商网站,降低了办公成本,提高了工作效率。     

基于B/S模式和J2EE架构的工商网站研究与设计

本文介绍了B/S结构的设计与实现以及J2EE架构的体系结构和优势,并结合实际经验,设计开发了基于B/S模式和J2EE架构的工商网站,降低了办公成本,提高了工作效率。