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Technique of Position Sensitive Detector with Alternating Light Source

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Semiconductor Photonics and Technology 1997年第3期3卷 228-231页

作者： SU Meijun(hefei University of Technology,hefei 230009,CHN)

The signal processing circuits of position sensitive detector(PSD) with alternating light source are *** measuring device of PSD with alternating light source can effectively eliminate the interference made by light n... 详细信息

关键词： Light Noise Signal Light Sources Position Sensitive Detectors

UNIFYING REPRESENTATION OF BZIER CURVE AND GENERALIZED BALL CURVES

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Applied Mathematics(A Journal of Chinese Universities) 2000年第1期15卷 109-121页

作者： Wu HongyiDept. ofMath. and Mech., hefeiUniv. of Technology,hefei230009.

This paper presents two new families of the generalized Ball curves which include the Be ′zier curve, the generalized Ball curves defined by Wang and Said independently and some intermediate curves. The relative degree elevation and reduction schemes, recursive algorithms and the Bernstein\|Be ′zier representation are also given.

关键词： Be'zier curve generalized Ballcurve degree elevation and reduction recursive algorithm .

A Proxy Blind Signature Scheme Based on DLP

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Wuhan University Journal of Natural Sciences 2007年第1期12卷 83-86页

作者： YU Baozheng XU Congwei School of Management Hefei University of TechnologyHefei 230009 Anhui China

A proxy signature scheme allows an original signer to delegate his signing capability to a proxy signer who can sign on behalf of the original signer. A blind signature is the concept with a salient feature that the signer can not make a linkage between the blind signature and the identity of the requester. Proxy signature and blind signature are used widely in electronic commerce. With satisfying the security properties of both two signatures, a new proxy blind signature scheme based on discrete logarithm problem is proposed.

关键词： discrete logarithm problem proxy signature blind signature electronic commerce

Kratzig及Park-Ang损伤指数模型比较研究

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土木工程学报 2010年第12期43卷 1-6页

作者：何利叶献国合肥工业大学安徽合肥230009 安徽土木工程结构与材料省级实验室安徽合肥230009

随着基于性能抗震设计理论的发展,地震损伤模型在建立性态目标方面受到重视。为了对基于能量的Kratzig模型作进一步的发展和完善,并与目前常用的Park-Ang模型作比较,首先进行6个不同轴压比的钢筋混凝土框架柱的低周反复加载试验,对试件... 详细信息

随着基于性能抗震设计理论的发展,地震损伤模型在建立性态目标方面受到重视。为了对基于能量的Kratzig模型作进一步的发展和完善,并与目前常用的Park-Ang模型作比较,首先进行6个不同轴压比的钢筋混凝土框架柱的低周反复加载试验,对试件各循环加载的损伤情况进行详细的描述,在此基础上分别用两种模型计算各构件每一级加载的损伤指标,并与试验现象进行对照。将计算结果与有关文献提出的损伤指数抗震设防目标比较,提出Krizig模型对应的设防目标指数范围;对损伤指数目标、模型合理性进行分析。研究结果表明,Park-Ang过低估计构件的损伤,认为基于能量的Krizig模型更符合构件的塑形变形性能。

关键词：地震损伤模型比较研究损伤指数滞回耗能

MESOZOIC VOLCANIC AND INTRUSIVE ROCKS IN EASTERN GUANGDONG PROVINCE, CHINA:GENESIS, TYPES AND PETROLOGIC IMPLICATION

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Scientia Geologica Sinica 2000年第3期 253-262页

作者： XU Xiaochun, XIE Qiaoqin and YUE Shucang (hefei University of Technology, hefei, 230009)

Mesozoic magmatism formed the volcanic - intrusive complex series with closely genetic relationships in eastern Guangdong province of China. Some of the complexes have transitional characteristics of S-type and I-type, and thus are named S-I type, which show that there was a specially geological and geochemical background when the complex formed. The regional magmatism evolution characteristics shows that this area underwent S-N trending extension, collision and Netrending shear, extension in Mesozoic. The regional complexes are the superposition of Nanling and the Southeast China coast rock provinces. Therefore, this area is a key for us to study the Mesozoic magmatic petrology and deep processes of the Southeast China continent.

关键词： rock TYPES AND PETROLOGIC IMPLICATION CHINA MESOZOIC VOLCANIC AND INTRUSIVE ROCKS IN EASTERN GUANGDONG PROVINCE

Formation Mechanism and Exhumation Processes for HP-UHP Metamorphic Rocks in Dabie Mountains

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Journal of China University of Geosciences 2004年第2期15卷 193-205页

作者： Hou Mingjin Tectonique et Bassins Sédimentaires Laboratoire, Université de Paris-Sud 91405, ORSAY Cedex, France School of Resources and Environment, hefei University of Technology, hefei 230009, China Anhui Geological Survey, hefei 230001, China Tang Jiafu Anhui Geological Survey, hefei 230001, China Tectonique et Bassins Sédimentaires Laboratoire Université de Paris-Sud 91405ORSAY CedexFrance School of Resources and Environment Hefei University of TechnologyHefei 230009China Anhui Geological Survey Hefei 230001China Anhui Geological Survey Hefei 230001China

The high, ultrahigh pressure metamorphic rocks, widely distributed in Dabie Mountains, were described in terms of the geological setting, the marks of the petrology and the mineralogy of the ultrahigh pressure (UHP) metamorphic rocks. According to the estimated uplifting and denudation of the Dabie Mountains, and to the thermodynamics theory, were assessed the depth and pressure (high pressure autoclave) of the formation setting of the UHP metamorphic rocks. Based on all the information mentioned above, a new explanation is derived from the mechanism of formation and the processes of exhumation of the UHP metamorphic rocks.

关键词： blueschist belt coesite-bearing eclogite belt abnormal crustal pressure,high pressure autoclave

DIRECT NUMERICAL SIMULATIONS OF TURBULENT CHANNEL FLOWS WITH CONSIDERATION OF THE BUOYANCY EFFECT OF THE BUBBLE PHASE

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Journal of Hydrodynamics 2011年第3期23卷 282-288页

作者： LIU Nan-sheng CHENG Bao-guo QUE Xia LU Xi-yun Department of Modem Mechanics University of Science and Technology of China Hefei 230026 China Department of Computer Science and Technology Hefei University of Technology Hefei 230009 China

Turbulent channel flows with consideration of the buoyancy effect of the bubble phase is investigated by means of the Direct Numerical Simulation （DNS）. This two-phase system is solved by a two-way coupling Lagrangian-Eulerian approach. The Reynolds number based on the friction velocity and the half-width of the channel is 194, and the gravitational acceleration varies from -0.5 to 0.5, ranging from the upflow to the downflow cases. This study aims to reveal the influence of buoyancy on the turbulence behavior and the bubble motion. Some typical statistical quantities, including the averaged velocities and velocity fluctuations for the fluid and bubble phases, as well as the flow structures of the turbulence fluctuations, are analyzed.

关键词： Direct Numerical Simulations (DNS) turbulent bubbly flow upflow/downflow turbulence fluctuations bubble statistics turbulence structures