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A HYBRID PULL-PUSH SYSTEM FOR NEAR REAL-TIME NOTIFICATIONS ON SENSOR WEB
GIS Sensor Query Real-time Spatial Temporal Web based Application
2014/4/28
World-wide sensor web generates tremendous amount of sensor data stream allowing people to observe events that were previously
unobservable. Sensor web has been wildly applied in many monitoring sys...
DETERMINING PULL – OUT DEFORMATIONS OF BONDED METAL ANCHORS EMBEDDED IN CONCRETE BY MEANS OF PHOTOGRAMMETRY
Acquisition Monitoring Engineering Measurement Camera Photogrammetry
2014/4/28
Chemical anchorages are applied in many engineering implementations, particularly strengthening of reinforced concrete structures. During strengthening procedure; chemical anchorages should be tested,...
25GHz Hybrid Silicon Mach-Zehnder Modulator using High-Speed Push-Pull Slotline Design
General Modulators
2015/5/26
We demonstrate a hybrid silicon Mach-Zehnder modulator having a voltage-length product of 2.4 V-mm and chirp parameter of -0.75. This modulator also has a modulation bandwidth of 25 GHz.
考虑边缘效应的平行平板式静电微执行器Pull-in模型
Pull-in MEMS 边缘效应 微执行器
2014/4/29
在MEMS执行器的设计中，求出准确的pull-in参数是至关重要的。在过去的研究中，对漏电场不能忽略的平行平板式静电微执行器，通常只能采用有限元法数值求解。但是，有限元法繁琐、费时、不直观。平行平板电容器漏电容解析模型通常有两种：一种简单的；一种详细的。基于这两种漏电容解析模型，本文分别导出了它们对应的Pull-in失稳方程，并将求解结果与ANSYS耦合场分析结果做了对比。结果表明，基于详细漏电容...
The pull of artificial gravity（图）
artificial gravity the International Space Station physiological research
2010/4/21
Although President Obama’s vision for NASA’s future calls for canceling the Constellation program that was intended to send humans to the moon by 2020, his proposed budget for the agency still holds o...
“Help Me Pull That Cursor”A Collaborative Interactive Floor Enhancing Community Interaction
Interactive floor library ubiquitous computing environments
2009/12/9
In this paper we describe the development, experiments and evaluation of the iFloor, an interactive floor prototype installed at the local central municipality library. The primary purpose of the iFlo...
Mechanism of Pull-out Performance in Lagscrewbolted Timber Joints II
Lagscrewbolt pull-out resistance Volkersen model thin plate specimens
2009/3/6
Lagscrewbolts were developed as a simple and economical moment-resisting connector for glulam frame constructions. This new type of connector is expected to show high pull-out resistance due to the s...
Mechanism of Pull-out Performance of Lagscrewbolted Timber Joints I
Lagscrewbolt lead hole embedment depth embedment direction edge distance
2009/3/6
At present, moment-resisting connections for glulam constructions are widely constituted as drift-pin joints with insert-steel gusset plates, as well as bolted joints. These joints consume much steel ...
Mechanism of Pull-out Performance in Lagscrewbolted Timber Joints III
lagscrewbolt pull-out perpendicular to the grain Volkersen model effective area (Aw)
2009/3/6
Lagscrewbolts were developed as simple and economical moment-resisting connectors for glulam constructions. A lagscrewbolt has two threads :a screw type thread on the outside surface at one end and a ...
PULL-OUT AND SHEAR STRENGTH EQUATIONS FOR HEADED STUDS CONSIDERING EDGE DISTANCE
stud shear connector anchor ultimate capacity hybrid structure
2008/12/30
Studs are often used as shear connectors or anchors between concrete and steel members at various composite structures. As the studs are welded in a finite range of the steel members and each stud gen...
四桥臂逆变器的作用是针对三相不平衡或非线性负载提供三相对称输出电压。逆变器中由于第四桥臂的存在，各桥臂控制之间存在一定的耦合关系，逆变器的控制变得非常复杂。鉴于多数文献只根据解耦变换矩阵给出了一种解耦方案，并未深入揭示四桥臂逆变器控制规律的本质。该文在分析第四桥臂作用和研究四桥臂逆变器控制规律基础上，提出了通过第四桥臂对负载产生的不平衡因素进行全补偿的思想。所提控制思想揭示了针对四桥臂逆变器的解耦...