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The Biometric Prison: Technological Advancements in Tracking Inmates and Staff
Walker,Jeffrey T.,Rocio Roles 아시아교정포럼 2012 교정담론 Vol.6 No.1
이 연구는 교도소에서 바이오메트릭 기술의 이용의 기본을 다룬다. 이를 위해 먼저 출입통제의 역사와 바이오메트릭 기술을 소개한다. 그리고 현재의 바이오메트릭 기술과 이것이 교도소의 작동을 어떻게 변화시키는지를 다룬다. 바이오메트릭 시스템을 현장에서 사용하는 것은 이 연구의 제 삼장에서 다룬다. 미래의 바이오메트릭 기술 및 기술의 발달과 함께 앞으로 교도소가 어떻게 변할지를 살펴보며 마무리 짓는다.
The Functional Anatomy of Sleep-dependent Visual Skill Learning
Walker, Matthew P.,Stickgold, Robert,Jolesz, Ferenc A.,Yoo, Seung-Schik Oxford University Press 2005 Cerebral cortex Vol.15 No.11
<P>Learning of procedural skills develops gradually, with performance improving significantly with practice. But improvement on some tasks, including a visual texture discrimination task, continues in the absence of further practice, expressly during periods of sleep and not across equivalent waking episodes. Here we report that the brain activation revealed significantly different patterns of performance-related functional activity following a night of sleep relative to 1 h post-training without intervening sleep. When task activation patterns after a night of sleep were compared with activation patterns without intervening sleep (1 h post-training), significant regions of increased signal intensity were observed in the primary visual cortex, the occipital temporal junction, the medial temporal lobe and the inferior parietal lobe. In contrast, a region of decreased signal intensity was found in the right temporal pole. Corroborating these condition differences, correlations between behavioural performance and brain activation revealed significantly different patterns of performance-related functional activity following a night of sleep relative to those without intervening sleep. Together, these data provide evidence of overnight bi-directional changes in functional anatomy, differences that may form the neural basis of sleep-dependent learning expressed on this task.</P>
Interactions Between Starches, Sugars, and Emulsifiers in High-Ratio Cake Model Systems
WALKER,C.E.,Kim,C.S. 國立 昌原大學校 基礎科學硏究所 1993 基礎科學硏究所論文集 Vol.4 No.-
The cake flour in a high-ratio cake model system was replaced by a blend of commercial wheat starch, vital gluten, and a lipid mixture of lecithin and ethoxylated mono-diglycerides. Then the wheat starch in the control formula was replaced with corn or potato starch. Lactose or dextrose(glucose) replaced 50% of the sucrose, and additional emulsifier, sucrose ester F-160, or polysorbate 60 also was used. Potato starch produced acceptable cakes, whereas corn starch did not. A 50% dextrose replacement for sucrose improved the cake volume and grain structure with corn starch. The potato starch, lactose, and polysorbate 60 combination produced a significant increase in batter viscosity, but this was not true for corn starch batters containing lactose. The increased batter viscosity tended to aid in air incorporation. Both additional emulsifiers improved all cake volumes. The addition of polysorbate 60 to the wheat starch batter containing lactose produced the highest cake volume with the best grain structure. Dextrose tended to retain more cake crumb moisture. Partial flour replacement by commercial starches might be beneficial in high-ratio cake baking, if proper combinations of starch, sugar, water, and emulsifier are used.
Hybrid microcatheter angioplasty for refractory cerebral vasospasm
Walker Melanie,Erdoes Morgan P.,Stricker Chloe G.,Bothell Julie,Kelly Cory M.,Levitt Michael R. 대한뇌혈관외과학회 2021 Journal of Cerebrovascular and Endovascular Neuros Vol.23 No.2
Cerebral vasospasm is a significant cause of morbidity and mortality associated with aneurysmal subarachnoid hemorrhage (aSAH). Intra-arterial chemical and mechanical angioplasty, performed alone or in combination, have been shown to ameliorate cerebral vasospasm and improve patient outcomes. Few options exist for patients who fail these traditional endovascular tactics. We propose a hybrid microcatheter technique that combines the mechanical benefit of transient high pressure induced by microcatheter fluid bolus with a low-dose vasodilator infusion. Five patients with moderate to severe symptomatic vasospasm who failed medical and traditional endovascular management were treated using a hybrid microcatheter technique. All angioplasty procedures were technically successful, and the degree of vasospasm improved following angioplasty. There were no complications related to the cerebral angioplasty procedures. None of the patients required repeat endovascular intervention. Hybrid microcatheter angioplasty may be a useful complement to mechanical or pharmacological techniques in the endovascular management of intractable cerebral vasospasm after aSAH.
Interfacial engineering for highly efficient organic solar cells
Walker, B.,Choi, H.,Kim, J.Y. Elsevier 2017 CURRENT APPLIED PHYSICS Vol.17 No.3
<P>Interfacial engineering using metal oxides, organic surface modifiers and other materials can effectively enhance the performance of conventional and inverted organic solar cells by reducing energy barriers for charge transport, while improving compatibility between organic active layer and inorganic metal oxides or transparent conducting electrodes. This short review introduces several important classes of interfacial materials which have been widely successful in improving the efficiency of organic solar cells, and covers some of the recent advances in this field. (C) 2016 Elsevier B.V. All rights reserved.</P>
Walker, Alexander M.,Hayes, Robert P.,Youn, Buhyun,Vermerris, Wilfred,Sattler, Scott E.,Kang, ChulHee American Society of Plant Biologists 2013 PLANT PHYSIOLOGY - Vol.162 No.2
<P><I>The catalytic mechanism and exact specificity for hydroxycinnamoyltransferase from sorghum were determined by comprehensive approaches with crystal structures of apo-form and ternary product complex, site-directed mutagenesis, and kinetic and thermodynamic analyses.</I></P>
American Documentation (1950-1969)에서 저자 성별 분석 연구
Walker, Thomas D. Korean Biblia Society for Library and Information 2014 한국비블리아학회지 Vol.25 No.4
The field of information science has been documented in several ways during its existence and in some ways has mirrored that of other scientific disciplines during the same period. This article examines variables related to author gender of information science articles in American Documentation (AD) during its entire run, 1950 through 1969. Published by the American Documentation Institute, AD was a primary information science journal of its time, changing its name in 1970 to the Journal of the American Society for Information Science (JASIS), corresponding with the change of the parent organization's name to the American Society for Information Science (1968). AD was preceded by an earlier "information science" publication, the Journal of Documentary Reproduction (JDR), 1938-1942, issued by the American Library Association. Studies indicate that females contributed about 8% for the entire run of articles in JDR (1938-1942) and about 22% for the first twenty-seven years of JASIS (1970-1996). The present study explores the nature of female contributions to AD for the middle period (1950-1969). It has been determined that for the entire run of the journal under the name AD, female authors comprised about 17% of the contributors, which places their publishing percentage for this period between the earlier and later periods, thus expectedly filling the gap. 본 연구는 1950년에서 1969년 동안 American Documentation에 실린 정보학 논문의 저자 성별과 관련된 변수를 검토한다. American Documentation은 American Documentation Institute에서 출판되었고, 당시 중요한 정보학 저널이었으며, 1968년 모기관의 명칭이 American Society for Information Science로 변경되면서 1970년 표제가 Journal of the American Society for Information Science (JASIS)로 변경되었다. AD 이전에는 ALA에서 출판한 Journal of Documentary Reproduction (JDR)이 정보학 저널로 있었다. 연구에 따르면 JDR (1938-1942)의 전체 논문 중 여성은 약 8%를 차지하였고, JASIS (1970-1996)의 초기 27년에는 22%를 차지하였다. 본 연구는 1950-1969동안 American Documentation에 여성의 논문을 분석하고 있다. AD라는 이름으로 발행된 저널 전체에서 여성 저자는 17%를 구성하였는데 이러한 비율은 초기와 이후 시기의 중간 정도에 해당하고 있다.