نتایج جستجو برای: borehole breakout

تعداد نتایج: 4970  

Journal: :J. Inf., Comm, Ethics in Society 2015
Qi Deng Shaobo Ji Yun Wang

Green IT Practice Disclosure: An Examination of Corporate Sustainability Report in IT Sector Deng, Q., Ji, S., Wang, Y. (2015) Green IT Practice Disclosure: An Examination of Corporate Sustainability Report in IT Sector, 2015 International Conference on Information Systems (ICIS 2015), Fort Worth, Texas, USA, December 13-16, 2015. The paper is accepted, to be presented in the “Breakout Ideas” t...

2016
Nicholas A. James Arun Kejariwal David S. Matteson

Low latency and high availability of an app or a web service are key, amongst other factors, to the overall user experience (which in turn directly impacts the bottomline). Exogenic and/or endogenic factors often give rise to breakouts in cloud data which makes maintaining high availability and delivering high performance very challenging. Although there exists a large body of prior research in...

Journal: :Schizophrenia bulletin 2009
Deanna M Barch Todd S Braver Cameron S Carter Russell A Poldrack Trevor W Robbins

The third meeting of the Cognitive Neuroscience Treatment Research to Improve Cognition in Schizophrenia (CNTRICS) was focused on selecting promising measures for each of the cognitive constructs selected in the first CNTRICS meeting. In the domain of executive control, the 2 constructs of interest were "rule generation and selection" and "dynamic adjustments in control." CNTRICS received 4 tas...

2003
Geoff J. M. Moret Michael D. Knoll

Detailed information about the spatial distribution of subsurface properties is important in many fields. One method that can image the seismic velocity structure of the shallow subsurface is crosswell seismic tomography. By including rays traveling from the boreholes to the surface, the angular coverage of crosswell tomograms can be significantly improved. We investigated the effects of these ...

2005
Pradip Kumar Mukhopadhyay

Before embarking on any mining operation, it is advantageous to locate the subsurface orebody in three-dimensions with a high resolution (~1m) ahead of actual mining, because this will increase productivity and efficiency. Borehole radar is such an emerging mapping tool in the mining industry, that can be used to image the subsurface orebody with high resolution. 3-D subsurface imaging using tw...

2006
Declan Vogt

Borehole radar is an electromagnetic tool that can be applied to assist in the delineation of orebody geometry, ideally using routinely drilled cover and exploration boreholes. Successful trials of borehole radar for delineating reef horizons on South African gold and platinum mines have led to the development of a borehole radar system specifically designed for routine application in those eny...

2007
Shaopeng Huang Yu Shen

We have employed a few-parameter estimation (FPE) technique to derive information on past surface temperature variations from present-day borehole temperatures. Synthetic experiments show that the FPE t•hnique can separate reasonably well information on century-long trends of surface temperature change from borehole temperatures within a .wide range of noise levels. The technique also allows a ...

2012
Michel Bouchon

We present a method of calculation to simulate the propagation of acoustic and elastic waves generated by a borehole source embedded in a layered medium. The method is formulated as a boundary element technique where the Green's functions are calculated by the discrete wavenumber method. The restrictive assumptions are that the borehole is cylindrical and that its axis runs normal to the layer ...

2013
Tingjun Li Haining Yang Qing Zhao Zheng-ou Zhou

An impulse-based single-borehole radar prototype has been developed for well logging. The borehole radar is comprised of subsurface sonde and surface equipment. An armored 7-conductor well logging cable is used to connect subsurface sonde and surface equipment which is well compatible with the other well logging instruments. The performance experiments of the prototype have been conducted in a ...

2011
Elizabeth Murphy Kjell H. Mild

This breakout group evaluated the data addressing EMF effects on cytosolic free calcium and other ions as well as the effect of EMF on calcium signaling pathways. A literature search of papers published from 1990 to 1996 showed approximately 25 manuscripts directly related to the topic (see Table 1 and References; note these searches are inevitably incomplete). The breakout group discussed seve...

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