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| 1 | Rock characterization while drilling and application of roof bolter drilling data for evaluation of ground conditions显示文摘Despite recent advances in mine health and safety, roof collapse and instabilities are still the leading causes of injury and fatality in underground mining operations. Improving safety and optimum design of ground support requires good and reliable ground characterization. While many geophysical methods have been developed for ground characterizations, their accuracy is insufficient for customized ground support design of underground workings. The actual measurements on the samples of the roof and wall strata from the exploration boring are reliable but the related holes are far apart, thus unsuitable for design purposes. The best source of information could be the geological back mapping of the roof and walls, but this is disruptive to mining operations, and provided information is only from rock surface.Interpretation of the data obtained from roof bolt drilling can offer a good and reliable source of information that can be used for ground characterization and ground support design and evaluations. This paper offers a brief review of the mine roof characterization methods, followed by introduction and discussion of the roof characterization methods by instrumented roof bolters. A brief overview of the results of the preliminary study and initial testing on an instrumented drill and summary of the suggested improvements are also discussed. | Jamal Rostami Sair Kahraman Ali Naeimipour Craig Collins | 2015 | Journal of Rock Mechanics and Geotechnical Engineering2015，7，3： | 4 |
| 2 | Oncogenic Kras is required for both the initiation and maintenance of pancreatic cancer in mice显示文摘 | Collins Meredith A Bednar Filip Zhang Yaqing Brisset Jean-Christophe Galbán Stefanie Galbán Craig J Rakshit Sabita Flannagan Karen S Adsay N Volkan di Magliano Marina Pasca | 2012 | EN2012，，： | 3 |
| 3 | Ground characterization and roof mapping: Online sensor signal-based change detection显示文摘Measurement while drilling systems are becoming an important part of excavation operations for rock characterization and ground support design that require reliable information on rock strength and location & frequency of joints or voids. This paper focuses on improving rock characterization algorithms for instrumented roof-bolter systems. For this purpose, an improved void detection algorithm is proposed,where the underlying theory is built upon the concept of mean change detection based on the feed pressure signals. In addition, the application of acoustic sensing for void detection is examined and it is shown that the variance of the filtered acoustic signal is correlated to the strength of the material being drilled. The proposed algorithm has been validated on the data collected from full-scale drilling tests in various concrete and rock samples at the J. H. Fletcher facility. | Bahrampour Soheil Rostami Jamal Ray Asok Naeimipour Ali Collins Craig | 2015 | International Journal of Mining Science and Technology2015，25，6： | 2 |
| 4 | An Efficient,Energy Stable Scheme for the Cahn-Hilliard-Brinkman System显示文摘We present an unconditionally energy stable and uniquely solvable finite difference scheme for the Cahn-Hilliard-Brinkman(CHB)system,which is comprised of a Cahn-Hilliard-type diffusion equation and a generalized Brinkman equation modeling fluid flow.The CHB system is a generalization of the Cahn-Hilliard-Stokes model and describes two phase very viscous flows in porous media.The scheme is based on a convex splitting of the discrete CH energy and is semi-implicit.The equations at the implicit time level are nonlinear,but we prove that they represent the gradient of a strictly convex functional and are therefore uniquely solvable,regardless of time step size.Owing to energy stability,we show that the scheme is stable in the time and space discrete ℓ^(∞)(0,T;H_(h)^(1))and ℓ^(2)(0,T;H_(h)^(2))norms.We also present an efficient,practical nonlinear multigrid method–comprised of a standard FAS method for the Cahn-Hilliard part,and a method based on the Vanka smoothing strategy for the Brinkman part-for solving these equations.In particular,we provide evidence that the solver has nearly optimal complexity in typical situations.The solver is applied to simulate spinodal decomposition of a viscous fluid in a porous medium,as well as to the more general problems of buoyancy-and boundary-driven flows. | Craig Collins Jie Shen Steven M.Wise | 2013 | Communications in Computational Physics2013，13，4： | 1 |
| 5 | A study of the role of ion–molecule chemistry in the formation of sporadic sodium layers显示文摘 | Stephen C. Collins John M.C. Plane Michael C. Kelley Timothy G. Wright Pavel Soldán Timothy J. Kane Andrew J. Gerrard Brent W. Grime Rosie J. Rollason Jonathan S. Friedman Sixto A. González Qihou Zhou Michael P. Sulzer Craig A. Tepley | 2002 | Journal of Atmospheric and Solar-Terrestrial Physics2002，，7： | 1 |
| 6 | Common bile duct stone characteristics: correlation with treatement choice during laparoscopic cholecystectomy 显示文摘 | ROBERT A DUENSING RUSSELL A WILLIAMS JOHN CRAIG COLLINS M | 2000 | Journal of gastrointestinal surgery2000，4，1： | 1 |
| 7 | Phase I Trial of Combretastatin A4 Phosphate (CA4P) in Combination with Bevacizumab in Patients with Advanced Cancer显示文摘 | Paul Nathan Martin Zweifel Anwar R. Padhani Dow-Mu Koh Matthew Ng David J. Collins Adrian Harris Craig Carden Jon Smythe Nita Fisher N. Jane Taylor J. James Stirling Shiao-Ping Lu Martin O. Leach Gordon J.S. Rustin Ian Judson | 2012 | Clinical Cancer Research2012，，： | 1 |
| 8 | 多普勒超声扫描、磁共振血管造影和CT血管造影用于症状性下肢动脉疾病的诊断和评估:系统性综述显示文摘目的探讨多普勒超声扫描、磁共振血管造影和 CT 血管造影单独或联合应用在评估下肢动脉疾病中的诊断准确性;评价这些检查方法对患者治疗和结果的影响;评价患者对这些检查方法的态度并总结与不良事件相关的现有资料。设计系统性综述。方法检索11个电子数据库(截至2005年4月)、6本杂志和已找到文献中的参考文献以发现相关研究。两名评审员独立选择研究、提取资料和评估质量。使用 QUADASQ 目录评估诊断准确性研究的质量。结果 107项研究符合入选标准;其中,58项研究提供关于诊断准确性的资料,1项关于患者结果,4项关于患者态度和44项关于不良事件。质量评估强调研究报告的方法及质量的不足。由于大多数入选研究根据动脉节段而不是整条肢体或患者来报告结果,这样就不能解释患者多节段病变,所以可能高估检查的特异度。对发现下肢动脉50%及以上狭窄,造影剂增强磁共振血管造影诊断准确性最高,敏感度中位数95%(92%~99.5%)和特异度中位数97%(64%~99%);CT 血管造影分别为91%(89%~99%)和91%(83%~97%);多普勒超声扫描为88%(80%~98%)和96%(89%~99%)。一项对照试验报告,尽管基于单一的多普勒超声扫描或传统血管造影患者的治疗结果无明显差异,但是22%的患者需要另行血管造影以制定治疗方案。现有的证据表明:相对于传统血管造影,患者更愿意选择磁共振血管造影(有或无造影剂增强),而在磁共振血管造影无禁忌(如患有幽居恐怖症)的患者中,半数对磁共振血管造影或多普勒超声扫描无偏好。在现有关于不良事件的资料中,磁共振血管造影发生不良事件的比例最高,但是症状轻微。最严重的不良事件,尽管少见,但主要发生于传统血管造影中。结论造影剂增强磁共振血管造影较 CT 血管造影特异性更高(排除50%以上狭窄病变的准确性更高),较多普勒超声扫描敏感性更强(诊断50%以上狭窄病变的准确性更强);相对于传统血管造影,患者一般更愿意选择造影剂增强磁共振血管造影。另外,与传统血管造影相比,患者还愿意选择 CT 血管造影。患者对多普勒超声扫描和传统血管造影的偏好尚无资料。现有资料表明,造影剂增强磁共振血管造影可能是替代血管造影的一种有前景的检查手段。 | Ros Collins Jane Burch Gillian Cranny Raquel Aguiar-Ibáez Dawn Craig Kath Wright Elizabeth Berry Michael Gough Jos Kleijnen Marie Westwood 施德兵 | 2007 | 英国医学杂志中文版2007，10，6： | 1 |
| 9 | The army manpower long-range planning system 显示文摘 | San1 Gass I Roger Collins W Craig W Meinhardi W l | 1998 | Operations Research1998，36，1： | 1 |
| 10 | Effect of pharmacist intervention on glycemic control in diabetes显示文摘 | Courtney Collins Brendan L. Limone Jennifer M. Scholle Craig I. Coleman | 2010 | Diabetes Research and Clinical Practice2010，，2： | 1 |
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