This section of the report discusses a tool which can create automated 3D CAD drill models based on geometric as well as manufacturing parameters. This tool is a required component of numerical/FEmodels of FRP drilling. The tool outputs the drill in a variety of solid geometry formats which can then be meshed and used in different FE analysis packages.

In the process of tightening up and screwing off the iron roughneck, it is required that the center of clamping pliers and the center of drill pipe are coincident, so as to avoid the damage of the circular guide in clamping system, and to ensure the iron roughneck work normally. While the traditional method of centering is artificial in iron roughneck, its precision is low, so it is easy to dam...

BACKGROUND Piezosurgery is a relatively new osteotomy technique using microvibrations of scalpels at ultrasonic frequencies to perform safe and effective osteotomies without damage to adjacent soft tissue, which is widely used in spinal, oral, and maxillofacial surgery. We hypothesized that such a device could also be useful in cervical laminoplasty. The purpose of this study was to compare the...

Background: In 2008, the Southern California Earthquake Center in collaboration with the U.S. Geological Survey Earthquake Hazards Program launched the first annual Great ShakeOut, the largest earthquake preparedness drill in the history of the United States. Materials and Methods: We collected online survey data from 2052 campaign registrants to assess how people participated, whether audience...

Digital Enhanced Cordless Telecommunications(DECT) can carry both voice and data. The DECTLAN project at Centre for Wireless Communications (CWC) aims to develop a wireless LAN system based on the DECT standard. In phase I, the DECTLAN system supports a single duplex DECT bearer and an effective data rate of 24 kbps with no mobility support. In phase II of the project, the system will support 6...

The San Francisco, California, bay area is subject to continuous seismic risk. One particular response has been the development of community-based training programmes designed to teach residents basic emergency response skills. Citizens are taught emergency medical techniques, search and rescue, fire suppression and other fundamental response skills. Current estimates in the Bay Area place the ...

Due to ultraviolet flux in the surface layers of most solar bodies, future astrobiological research is increasingly seeking to conduct subsurface penetration and drilling to detect chemical signature for extant or extinct life. To address this issue, we present a micro-penetrator concept (mass < 10 kg) that is suited for extraterrestrial planetary deployment and in situ investigation of chemica...