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First-principles study of non-radiative carrier capture by defects at amorphous-SiO_(2)/Si(100)interface
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作者 祝浩然 谢伟锋 +3 位作者 刘欣 刘杨 张金利 左旭 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第7期504-509,共6页
Defects have a significant impact on the performance of semiconductor devices.Using the first-principles combined with one-dimensional static coupling theory approach,we have calculated the variation of carrier captur... Defects have a significant impact on the performance of semiconductor devices.Using the first-principles combined with one-dimensional static coupling theory approach,we have calculated the variation of carrier capture coefficients with temperature for the interfacial defects P_(b0) and P_(b1) in amorphous-SiO_(2)/Si(100)interface.It is found that the geometrical shapes of P_(b0) and P_(b1) defects undergo large deformations after capturing carriers to form charged defects,especially for the Si atoms containing a dangling bond.The hole capture coefficients of neutral P_(b0) and P_(b1) defects are largest than the other capture coefficients,indicating that these defects have a higher probability of forming positively charged centres.Meanwhile,the calculated results of non-radiative recombination coefficient of these defects show that both P_(b0) and P_(b1) defects are the dominant non-radiative recombination centers in the interface of a-SiO_(2)/Si(100). 展开更多
关键词 interface defect carrier capture coefficients
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Gradient-augmented hybrid interface capturing method for incompressible two-phase flow
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作者 付峥 吴士玉 刘凯欣 《Chinese Physics B》 SCIE EI CAS CSCD 2016年第6期283-289,共7页
Motivated by inconveniences of present hybrid methods,a gradient-augmented hybrid interface capturing method(GAHM) is presented for incompressible two-phase flow.A front tracking method(FTM) is used as the skeleto... Motivated by inconveniences of present hybrid methods,a gradient-augmented hybrid interface capturing method(GAHM) is presented for incompressible two-phase flow.A front tracking method(FTM) is used as the skeleton of the GAHM for low mass loss and resources.Smooth eulerian level set values are calculated from the FTM interface,and are used for a local interface reconstruction.The reconstruction avoids marker particle redistribution and enables an automatic treatment of interfacial topology change.The cubic Hermit interpolation is employed in all steps of the GAHM to capture subgrid structures within a single spacial cell.The performance of the GAHM is carefully evaluated in a benchmark test.Results show significant improvements of mass loss,clear subgrid structures,highly accurate derivatives(normals and curvatures) and low cost.The GAHM is further coupled with an incompressible multiphase flow solver,Super CE/SE,for more complex and practical applications.The updated solver is evaluated through comparison with an early droplet research. 展开更多
关键词 interface capturing hybrid method mass loss incompressible two-phase flow
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NUMERICAL STUDY OF TWO INTERFACE METHODS FOR COMPRESSIBLE MULTI-FLUID FLOWS
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作者 Ma Dongjun Cai Yong Sun Dejun Yin XieyuanDepartment of Modern Mechanics, University of Science and Technology of China,Hefei 230026,P.R.China 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI 2001年第z1期87-92,共6页
Two interface capturing methods are studied for multi fluid flows, governed by the stiffened gas equation of state. The mixture type interface capturing algorithm uses a simple volume fraction model Euler equations wr... Two interface capturing methods are studied for multi fluid flows, governed by the stiffened gas equation of state. The mixture type interface capturing algorithm uses a simple volume fraction model Euler equations written in a quasi conservative form, which is solved by a standard high resolution piecewise parabolic method (PPM) with multi fluid Riemann solver. The level set interface capturing method uses a narrow band ghost fluid method (GFM) with no numerical smearing. Several examples are presented and compared for one and two dimensions, which show the feasibility of the two methods applied to various multi fluid problems. 展开更多
关键词 COMPRESSIBLE multi-fluids flow interface capturing METHOD GHOST fluid METHOD HIGH-ORDER GODUNOV scheme
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A Discontinuity and Cusp Capturing PINN for Stokes Interface Problems with Discontinuous Viscosity and Singular Forces
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作者 Yu-Hau Tseng Ming-Chih Lai 《Annals of Applied Mathematics》 2023年第4期385-405,共21页
In this paper,we present a discontinuity and cusp capturing physicsinformed neural network(PINN)to solve Stokes equations with a piecewiseconstant viscosity and singular force along an interface.We first reformulate t... In this paper,we present a discontinuity and cusp capturing physicsinformed neural network(PINN)to solve Stokes equations with a piecewiseconstant viscosity and singular force along an interface.We first reformulate the governing equations in each fluid domain separately and replace the singular force effect with the traction balance equation between solutions in two sides along the interface.Since the pressure is discontinuous and the velocity has discontinuous derivatives across the interface,we hereby use a network consisting of two fully-connected sub-networks that approximate the pressure and velocity,respectively.The two sub-networks share the same primary coordinate input arguments but with different augmented feature inputs.These two augmented inputs provide the interface information,so we assume that a level set function is given and its zero level set indicates the position of the interface.The pressure sub-network uses an indicator function as an augmented input to capture the function discontinuity,while the velocity sub-network uses a cusp-enforced level set function to capture the derivative discontinuities via the traction balance equation.We perform a series of numerical experiments to solve two-and three-dimensional Stokes interface problems and perform an accuracy comparison with the augmented immersed interface methods in literature.Our results indicate that even a shallow network with a moderate number of neurons and sufficient training data points can achieve prediction accuracy comparable to that of immersed interface methods. 展开更多
关键词 Stokes interface problem immersed interface method level set function physics-informed neural network discontinuity capturing shallow neural network cuspcapturing neural network
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聚酰亚胺复合膜的制备及其在沼气提纯中的应用
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作者 丁晓莉 王巍骥 +2 位作者 张乾坤 张智铭 赵红永 《天津工业大学学报》 CAS 北大核心 2024年第4期7-11,18,共6页
为解决沼气分离过程中单级膜过程产物CO_(2)纯度低及CH4的损失率较高等问题,通过界面聚合法制备了具有超高分离性能的具有聚酰亚胺分离层的复合膜,研究了操作温度、进料侧压力及切割比等因素对分离效果的影响。结果表明:该膜适用的温度... 为解决沼气分离过程中单级膜过程产物CO_(2)纯度低及CH4的损失率较高等问题,通过界面聚合法制备了具有超高分离性能的具有聚酰亚胺分离层的复合膜,研究了操作温度、进料侧压力及切割比等因素对分离效果的影响。结果表明:该膜适用的温度及压力范围较广,不同操作条件下的膜均表现出了优异的分离性能,产出的CO_(2)纯度高,CH4的损失率低。低温、低压、低切割比有利于渗透侧高纯CO_(2)的输出;高温、高压、低切割比则有利于渗余侧CH4的回收。使用该膜模拟沼气分离,在切割比为0.1下操作,当进气压力为0.2 MPa、温度为25℃时,通过单级膜过程,渗透侧可得到99%的CO_(2),渗余侧CH4回收率可高达99%。在很宽的操作范围内,本文制备的复合膜在沼气中CO_(2)组分分离时,CH4损失率可控制在1%范围内,是理想的CO_(2)/CH4分离膜。 展开更多
关键词 复合膜 二氧化碳捕集 聚酰亚胺 界面聚合 沼气提纯
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基于高阶间断伽辽金方法的两相流数值模拟
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作者 黄健健 欧阳文轩 吕宏强 《南京航空航天大学学报》 CAS CSCD 北大核心 2024年第2期273-280,共8页
基于高阶间断伽辽金方法对可压缩两相流问题进行了数值求解。计算区域采用非结构网格划分,对于欧拉方程以及Level Set方程分别使用牛顿法以及龙格库塔方法进行迭代求解,并通过统一算法进行数据交换,实现统一框架下Level Set方程在可压... 基于高阶间断伽辽金方法对可压缩两相流问题进行了数值求解。计算区域采用非结构网格划分,对于欧拉方程以及Level Set方程分别使用牛顿法以及龙格库塔方法进行迭代求解,并通过统一算法进行数据交换,实现统一框架下Level Set方程在可压缩流场中的求解。最后,通过经典二维算例对本文所提算法展开验证。通过Zalesak圆盘等算例验证了算法的高分辨率、质量守恒性及其在处理大变形问题上的优势,然后对左行激波通过氦气气泡的数值模拟,验证了本文算法对流场两相流界面复杂形状的高精度捕捉能力。 展开更多
关键词 间断伽辽金 可压缩流场 两相流 Level Set 界面捕捉
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A boundary layer model for capture of inclusions by steel-slag interface in a turbulent flow
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作者 Yi-peng Sun Hao-jian Duan Li-feng Zhang 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2023年第6期1101-1108,共8页
A boundary layer model was developed to predict the capture of inclusions by steel-slag interface in a turbulent fluid flow,which is based on the detailed analysis of inclusion trajectories.The effective boundary laye... A boundary layer model was developed to predict the capture of inclusions by steel-slag interface in a turbulent fluid flow,which is based on the detailed analysis of inclusion trajectories.The effective boundary layer for inclusion removal was proposed by a statistical method.It is noticed that the capture of inclusions by steel-slag interface is not only dependent on the diameter of inclusions but also related to the local turbulent conditions.In high turbulent flow fields,the transport of inclusions is mainly dominated by the turbulent flow,and thus,the effective boundary layer thickness is mainly affected by the level of turbulent kinetic energy and is almost independent of the inclusion diameter.The inertia of inclusions gradually takes over the stochastic effect of turbulent flow,and the effect of inclusion diameter on effective boundary layer thickness becomes more noticeable with the decrease in the level of turbulent kinetic energy.Besides,the effective boundary layer thickness is more susceptible to the inclusion diameter for larger inclusions due to its greater inertia under the same turbulent condition while it principally depends on the level of turbulent kinetic energy for smaller inclusions.As the characteristic velocity increases,the time for inclusions transport and interaction with steel-slag interface decreases,and thus,the effective boundary layer thickness decreases.Moreover,the graphical user interface was developed by using the cubic spline interpolation for ease of coupling the current boundary layer model with the macro-scale model of a turbulent fluid flow in the metallurgical vessel. 展开更多
关键词 Boundary layer model capture of inclusions steel–slag interface Turbulent flow
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Capturing Moving Interfaces by LevelSet Method with Ghost Technique
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作者 Wang Xueyao Liu Shi +3 位作者 Liu Changchun Jiang Fan Li Zhihong Ma Zhengzhong 《Journal of Thermal Science》 SCIE EI CAS CSCD 2007年第4期376-381,共6页
SMAC method is adopted to solve Navier-Stokes equations, by using fifth-order WENO scheme and TVD R-K scheme, LevelSet methods are used to capture moving interfaces with improved Ghost techniques. Some examples, e.g. ... SMAC method is adopted to solve Navier-Stokes equations, by using fifth-order WENO scheme and TVD R-K scheme, LevelSet methods are used to capture moving interfaces with improved Ghost techniques. Some examples, e.g. the incompressible inviscid flame interfaces of one and two dimensions and the rising-merging of oil bubbles in water, are computed and the comparison with the result of commercial CFD software Fluent has been done. The rationality of LevelSet methods with Ghost technique in capturing moving interfaces with jump conditions is affirmed. It is shown that Level Set method can capture interfaces sharply without complicated reconstruction and can be easily programmed. 展开更多
关键词 LevelSet methods Ghost technique capture moving interfaces SMAC method
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适用二维切割体网格的THINC/QQ算法扩展研究
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作者 李超 段文洋 赵彬彬 《哈尔滨工程大学学报》 EI CAS CSCD 北大核心 2023年第8期1256-1262,共7页
为了扩展基于二次曲面和高斯积分的双曲正切函数界面捕捉算法THINC/QQ的单元适用类型,本文将适用切割表面式非结构单元的THINC/QQ-SF算法原理应用于二维切割体网格。在进行界面重构时,先将带悬挂点的复杂单元虚拟简化为常规的四边形或... 为了扩展基于二次曲面和高斯积分的双曲正切函数界面捕捉算法THINC/QQ的单元适用类型,本文将适用切割表面式非结构单元的THINC/QQ-SF算法原理应用于二维切割体网格。在进行界面重构时,先将带悬挂点的复杂单元虚拟简化为常规的四边形或三角形单元;而在计算流体体积流量时再考虑各单元的真实拓扑结构。针对典型流体体积对流和溃坝算例,本文设计了一系列二维切割体网格,并验证了所用扩展方法的可行性。研究表明:与高分辨率界面捕捉HRIC算法相比,二维THINC/QQ-SF算法的计算精度更高,能有效抑制多相流界面发生大变形时的流体体积数值耗散。 展开更多
关键词 多相流 界面捕捉 流体体积法 THINC/QQ 二维切割体网格 高分辨率界面捕捉算法 溃坝
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碳纳米管薄膜场效应晶体管低温电学特性
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作者 张静 李梦达 +7 位作者 朱慧平 王磊 彭松昂 陆芃 李晓静 王艳蓉 李博 闫江 《现代应用物理》 2023年第3期217-221,共5页
基于网络状碳纳米管(carbon nanotube,CNT)薄膜制备了网络状碳纳米管薄膜场效应晶体管(carbon nanotube thin film field effect transistor,CNT-TFT),研究了温度为100~300 K时,CNT-TFT的电学特性,并对关键电学参数,如开态电流I_(on)、... 基于网络状碳纳米管(carbon nanotube,CNT)薄膜制备了网络状碳纳米管薄膜场效应晶体管(carbon nanotube thin film field effect transistor,CNT-TFT),研究了温度为100~300 K时,CNT-TFT的电学特性,并对关键电学参数,如开态电流I_(on)、跨导G_(m)、阈值电压V_(th)和亚阈值摆幅S_(S)等,进行了深入分析。研究结果表明,随着温度的降低,G_(m)出现了下降,V_(th)向左漂移;在G_(m)和V_(th)共同作用下,I_(on)显著下降。通过对电学参数随温度演化机制的深入分析,发现器件G_(m)的降低不仅与CNT内的散射及CNT-金属接触电阻相关,而且与交叠的碳纳米管间的结电阻密切相关。同时,研究还表明,低温下,界面俘获中心对电子俘获概率的减小是引起器件V_(th)和S_(S)变化的主要因素。 展开更多
关键词 碳纳米管薄膜场效应晶体管 低温 电学特性 散射 界面俘获中心
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一种矿用本安型音视频记录仪
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作者 李文峰 王倩 +2 位作者 刘斌 刘凯 李强 《煤矿安全》 CAS 北大核心 2023年第8期202-208,共7页
设计了一种矿用本安型音视频记录仪。设备基于5G SOC处理器,采用感光传感器+白光/红外激光补光+本质安全电路方案,在低照度、全黑或密闭空间的环境下,能采集、压缩、存储、显示4K高清视频图像,同时将采集的音视频数据进行实时远传;记录... 设计了一种矿用本安型音视频记录仪。设备基于5G SOC处理器,采用感光传感器+白光/红外激光补光+本质安全电路方案,在低照度、全黑或密闭空间的环境下,能采集、压缩、存储、显示4K高清视频图像,同时将采集的音视频数据进行实时远传;记录仪具有低照度环境下成像质量高、拍摄距离远、功耗小等特点,支持TCP/IP、UDP、RTP、ONVIF、GB28181等协议,除了作为井下信息记录外,还可以辅助应急指挥部及时展开救援行动。测试结果表明:记录仪黑暗环境下图片分辨率为10688×6012,视频分辨率为2560×1440,可视距离达20 m,数据丢包率约为0.068%,时延约为15.85 ms,可实现持续视频摄录9 h或持续视频回传4 h。 展开更多
关键词 矿用音视频记录仪 低照度视频采集 感光传感器 白光/红外激光补光 GB28181接口
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高温应力下SiO_(2)/SiC近界面碳缺陷的结构与电子特性演变 被引量:1
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作者 丁攀 尉升升 +3 位作者 张圆 白娇 苏艳 王德君 《半导体技术》 CAS 北大核心 2023年第7期557-562,576,共7页
SiO_(2)/SiC近界面碳缺陷是引起高温应力下SiC MOSFET可靠性劣化的主要根源。采用第一性原理密度泛函理论结合分子动力学,模拟计算了高温应力(425~625 K,间隔100 K)对SiO_(2)/SiC近界面碳缺陷(如羧基类、碳二聚体、碳三聚体等缺陷)结构... SiO_(2)/SiC近界面碳缺陷是引起高温应力下SiC MOSFET可靠性劣化的主要根源。采用第一性原理密度泛函理论结合分子动力学,模拟计算了高温应力(425~625 K,间隔100 K)对SiO_(2)/SiC近界面碳缺陷(如羧基类、碳二聚体、碳三聚体等缺陷)结构和电子特性的影响。计算结果表明:施加高温应力后,羧基类碳缺陷结构稳定;碳二聚体缺陷的碳碳双键(C═C)转变为碳碳单键(C—C),且无法在SiC带隙中引入电荷态;碳三聚体缺陷在施加高温应力后转变为新的C═C和碳氧双键(C═O)复合缺陷。这种复合缺陷在SiC的价带顶和导带底附近均引入了缺陷态,有较强的电子捕获能力,是SiC MOSFET在高温应力下性能不稳定的主要因素。 展开更多
关键词 碳化硅(SiC) 界面碳缺陷 高温应力 电子结构 电子捕获
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Green Synthesized Liquid-like Dynamic Polymer Chains with Decreased Nonspecific Adhesivity for High-Purity Capture of Circulating Tumor Cells
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作者 Feng Wu Xiaofeng Chen +6 位作者 Shuli Wang Ruimin Zhou Chunyan Wang Lejian Yu Jing Zheng Chaoyong Yang Xu Hou 《CCS Chemistry》 CSCD 2024年第2期507-517,共11页
The capture of circulating tumor cells(CTCs)is of great significance in reducing cancer mortality and complications.However,the nonspecific binding of proteins and white blood cells(WBCs)weakens the targeting capabili... The capture of circulating tumor cells(CTCs)is of great significance in reducing cancer mortality and complications.However,the nonspecific binding of proteins and white blood cells(WBCs)weakens the targeting capabilities of the capture surfaces,which critically hampers the efficiency and purity of the captured CTCs.Herein,we propose a liquid-like interface design strategy that consists of liquid-like polymer chains and anti-EpCAM modification processes for high-purity and high-efficiency capture of CTCs.The dynamic flexible feature of the liquid-like chains endows the modified surfaces with excellent antiadhesion property for proteins and blood cells.The liquid-like surfaces can capture the target CTCs and show high cell viability due to the environmentfriendly surface modification processes.When liquid-like surface designs were introduced in the deterministic lateral displacement(DLD)-patterned microfluidic chip,the nonspecific adhesion rate of WBCs was reduced by more than fivefold compared to that in the DLD chip without liquid-like interface design,while maintaining comparable capture efficiency.Overall,this strategy provides a novel perspective on surface design for achieving high purity and efficient capture of CTCs. 展开更多
关键词 green synthesis dynamic polymer chains liquid-like interface nonspecific adsorption capture of circulating tumor cells microfluidics
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Accurate Determination for the Energy & Temperature Dependence of Electron Capture CrossSection of Si-SiO_2 Interface States Using a New Method
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作者 陈开茅 武兰清 +1 位作者 许慧英 刘鸿飞 《Science China Mathematics》 SCIE 1993年第11期1397-1408,共12页
A new technique for accurate determination of the electron and hole capture cross-sections of interface states at the insulator-semiconductor interface has been developed through measuring the initial time variation i... A new technique for accurate determination of the electron and hole capture cross-sections of interface states at the insulator-semiconductor interface has been developed through measuring the initial time variation in the carrier filling capacitance transient, and full consideration is given to the charge-potential feedback effect on carrier capture process. A simplified calculation of the effect is also given. The interface states have been investigated with this technique at the Si-SiO_2 interface in an n-type Si MOS diode. The results show that the electron capture cross-section strongly depends on both temperature and energy. 展开更多
关键词 the capacitance transient of the carrier filling charge-potential feedback effect Si-SiO_2 interface temperature and energy dependence of the capture cross-section of the interface states.
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空间网状捕获接口的等效抓捕控制 被引量:5
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作者 介党阳 倪风雷 +2 位作者 谭益松 刘宏 蔡鹤皋 《机器人》 EI CSCD 北大核心 2011年第5期533-538,627,共7页
在空间大型机械臂在轨抓捕过程中,其关节柔性及长臀杆的变形会产生较大的末端跟踪及定位误差,因此很难实现成功抓捕.为此,本文研制了一种空间应用的网状捕获对接接口,提高了大臂末端执行器在大定位误差下的抓捕能力.同时,为了提高末端... 在空间大型机械臂在轨抓捕过程中,其关节柔性及长臀杆的变形会产生较大的末端跟踪及定位误差,因此很难实现成功抓捕.为此,本文研制了一种空间应用的网状捕获对接接口,提高了大臂末端执行器在大定位误差下的抓捕能力.同时,为了提高末端执行器与目标之间的非相对零速情况下的抓捕性能,利用等效抓捕的思想避开了抓捕过程中捕获接口对目标抓钩纠偏力建模复杂的问题,将问题简化为对目标抓钩端点在捕获面上投影的位置跟踪问题,实现了在末端执行器与目标具有一定的相对逃逸速度的情况下的成功抓捕.实验表明,利用本文提出的控制策略增大了网状捕获接口的抓捕容差范围,从而验证了本文提出的控制策略的何效性. 展开更多
关键词 空间捕获 网状捕获接口 抓捕控制 在轨抓捕
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数字平台生态系统价值生成逻辑 被引量:20
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作者 张宝建 薄香芳 +1 位作者 陈劲 李娜娜 《科技进步与对策》 CSSCI 北大核心 2022年第11期1-9,共9页
数字平台生态系统在价值生成过程中呈现出独特的价值逻辑。随着企业核心竞争优势向平台生态竞争优势转变,从数字化创新时代价值来源转向出发,明确价值生成的新逻辑范式,系统梳理价值界面延拓,并据此论证价值配置空间演变,分析数字平台... 数字平台生态系统在价值生成过程中呈现出独特的价值逻辑。随着企业核心竞争优势向平台生态竞争优势转变,从数字化创新时代价值来源转向出发,明确价值生成的新逻辑范式,系统梳理价值界面延拓,并据此论证价值配置空间演变,分析数字平台生态系统连接经济带来的价值发现。基于数字平台生态系统价值取向,阐释启动阶段用户价值共创、扩张阶段天棚战略扩容、维护阶段价值隔离机制,进而揭示平台生态系统价值生成规律。研究结论为审视数字创新背景下的价值创造规律及数字平台生态系统行动与治理提供了新理论依据。 展开更多
关键词 数字平台生态系统 价值生成 价值界面 价值获取
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基于XScale处理器的嵌入式视频解决方案 被引量:4
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作者 罗伟雄 胡楠赛 +1 位作者 高巍 张伟达 《北京理工大学学报》 EI CAS CSCD 北大核心 2007年第11期1009-1012,共4页
设计基于Intel XScale系列嵌入式系统处理器平台的视频解决方案.采用PXA27x处理器中的两项技术即Quick Capture接口和优化的IPP库进行开发,并引入该处理器平台的外加放置层(overlayer)多层显示,分别完成了系统的视频采集、图像异地传... 设计基于Intel XScale系列嵌入式系统处理器平台的视频解决方案.采用PXA27x处理器中的两项技术即Quick Capture接口和优化的IPP库进行开发,并引入该处理器平台的外加放置层(overlayer)多层显示,分别完成了系统的视频采集、图像异地传输和视频数据本地显示功能.实现了较高的性能指标. 展开更多
关键词 PXA27x处理器平台 视频采集与传输 Quick capture接口 外加放置层多层显示
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高集成度空间大型末端执行器的研制 被引量:3
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作者 介党阳 倪风雷 +2 位作者 谭益松 刘宏 蔡鹤皋 《高技术通讯》 CAS CSCD 北大核心 2012年第2期186-191,共6页
研制了一种高集成度且具有柔性捕获接口的空间大型末端执行器。该执行器由抓捕、拖动、锁定三个环节组成,集成了视觉、位置、力、温度及电流等多种传感器。基于机电一体化的设计思想,将三个环节的驱动控制系统集成在末端执行器内部。... 研制了一种高集成度且具有柔性捕获接口的空间大型末端执行器。该执行器由抓捕、拖动、锁定三个环节组成,集成了视觉、位置、力、温度及电流等多种传感器。基于机电一体化的设计思想,将三个环节的驱动控制系统集成在末端执行器内部。采用分布式控制策略,通过M-LVDS总线与中央控制器进行通信,实现了末端执行器控制参数的在线调整。而且,利用多传感器信息建立了局部自主的捕获策略,可实现对不同类型合作目标的抓捕。在搭建的地面微重力实验平台上进行的抓捕实验表明该末端执行器能在X、Y方向65mm偏差,Z方向100mm偏差情况下,实现对目标负载的成功捕获,具有较大容差范围下的捕获能力。 展开更多
关键词 末端执行器 空间捕获 柔性捕获接口 高集成度 捕获策略
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传统报文捕获平台性能影响因素分析 被引量:14
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作者 王佰玲 方滨兴 云晓春 《计算机工程与应用》 CSCD 北大核心 2003年第22期151-152,共2页
目前网络带宽日益增大,普通网络报文捕获平台已经成为大规模宽带网络的入侵检测系统,宽带网络防火墙,高性能路由器等工程的瓶颈。对于日益发展的高速网络,迫切需要分析出普通报文捕获平台的性能瓶颈,研究出高速通信接口,以便有效地提高... 目前网络带宽日益增大,普通网络报文捕获平台已经成为大规模宽带网络的入侵检测系统,宽带网络防火墙,高性能路由器等工程的瓶颈。对于日益发展的高速网络,迫切需要分析出普通报文捕获平台的性能瓶颈,研究出高速通信接口,以便有效地提高主机服务器的响应速度。 展开更多
关键词 报文捕获 高速网络接口 内存管理
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基于Mirror Driver的屏幕图像捕捉技术 被引量:4
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作者 周恕义 陈圣奇 +1 位作者 贺玉虎 金蕾 《计算机工程》 CAS CSCD 2013年第6期295-298,303,共5页
目前各类非高依赖DirectDraw应用中屏幕捕捉技术存在效率低下、捕捉遗漏、光标丢失以及不够稳定等问题。为此,提出基于镜像显示驱动的屏幕图像捕捉方案。设计并实现内核驱动,通过捕捉鼠标光标移动路径中的关键点再现光标轨迹,并对捕获... 目前各类非高依赖DirectDraw应用中屏幕捕捉技术存在效率低下、捕捉遗漏、光标丢失以及不够稳定等问题。为此,提出基于镜像显示驱动的屏幕图像捕捉方案。设计并实现内核驱动,通过捕捉鼠标光标移动路径中的关键点再现光标轨迹,并对捕获到的变化区域集进行优化合并。实验结果证明,该方案能快速稳定地捕捉屏幕上的变化区域图像,实现光标的移动捕捉。 展开更多
关键词 镜像显示驱动 屏幕图像捕捉 变化区域 光标捕捉 显示驱动 设备驱动接口
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