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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.
Interfacial engineering for highly efficient organic solar cells
Walker Bright James,최효성,김진영 한국물리학회 2017 Current Applied Physics Vol.17 No.3
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.
Reprogramming axonal behavior by axon-specific viral transduction
Walker, B A,Hengst, U,Kim, H J,Jeon, N L,Schmidt, E F,Heintz, N,Milner, T A,Jaffrey, S R Nature Publishing Group 2012 Gene Therapy Vol.19 No.9
The treatment of axonal disorders, such as diseases associated with axonal injury and degeneration, is limited by the inability to directly target therapeutic protein expression to injured axons. Current gene therapy approaches rely on infection and transcription of viral genes in the cell body. Here, we describe an approach to target gene expression selectively to axons. Using a genetically engineered mouse containing epitope-labeled ribosomes, we find that neurons in adult animals contain ribosomes in distal axons. To use axonal ribosomes to alter local protein expression, we utilized a Sindbis virus containing an RNA genome that has been modified so that it can be directly used as a template for translation. Selective application of this virus to axons leads to local translation of heterologous proteins. Furthermore, we demonstrate that selective axonal protein expression can be used to modify axonal signaling in cultured neurons, enabling axons to grow over inhibitory substrates typically encountered following axonal injury. We also show that this viral approach also can be used to achieve heterologous expression in axons of living animals, indicating that this approach can be used to alter the axonal proteome in vivo. Together, these data identify a novel strategy to manipulate protein expression in axons, and provides a novel approach for using gene therapies for disorders of axonal function.
Regensburg as Bibliographic Destination for Traveling Scholars of the Eighteenth-Century
Walker, Thomas D. Korea Institute of Science and Technology Informat 2015 Journal of Information Science Theory and Practice Vol.3 No.2
The Bavarian town of Regensburg was a library travel destination during the European Enlightenment. With at least 26 collections, the number and variety of its private, governmental, school, and religious libraries rivaled that of much larger cities and figured in the bibliographic travel accounts of Johann Keyssler, Christoph Nicolai, Carl Oelrichs, Filippo Argellati, Georg Zapf, Friedrich Hirsching, Adalbert Blumenschein, and many others. The first-hand descriptions of these repositories are unique primary sources for the study of library history. Having been accessible to researchers largely in published forms, many were designed to serve as bibliographic aids for informing scholars about the locations of specialized subject collections and some individual works. The journals, letters, guidebooks, and texts also reflected the evolving scholarly and scientific nature of their cultural period. Overall, this case study of Regensburg’s libraries illustrates the particular value of contemporary travel literature.
AN ITERATIVE METHOD FOR SYMMETRIC INDEFINITE LINEAR SYSTEMS
Walker, Homer-F.,Yi, Su-Cheol Korean Mathematical Society 2004 대한수학회논문집 Vol.19 No.2
For solving symmetric systems of linear equations, it is shown that a new Krylov subspace method can be obtained. The new approach is one of the projection methods, and we call it the projection method for convenience in this paper. The projection method maintains the residual vector like simpler GMRES, symmetric QMR, SYMMLQ, and MINRES. By studying the quasiminimal residual method, we show that an extended projection method and the scaled symmetric QMR method are equivalent.
Walker Gregory B.,Wang Alick P.,Hadwen Jeremiah,Erdenebold Undrakh-Erdene,Bebedjian Razmik,Sullivan Patrick,Santos Marlise P.,Chenier Chad,Karwaski Stephen,Caron Katie,Varga Gabriella,Lyon Jennifer,Le 대한신경중재치료의학회 2023 Neurointervention Vol.18 No.1
We describe a minimally invasive endovascular approach to treat an arteriovenous fistula of the scalp. We performed a direct puncture of the lesion through the patient’s scalp for liquid embolic agent injection along with external compression of the superficial temporal artery to perform a “manual pressure-cooker technique.” The combination of these minimally invasive techniques resulted in an excellent clinical and radiographic outcome.
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>
Walker, Bright,Liu, Jianhua,Kim, Chunki,Welch, Gregory C.,Park, Jin Keun,Lin, Jason,Zalar, Peter,Proctor, Christopher M.,Seo, Jung Hwa,Bazan, Guillermo C.,Nguyen, Thuc-Quyen The Royal Society of Chemistry 2013 ENERGY AND ENVIRONMENTAL SCIENCE Vol.6 No.3
<P>We report a series of solution-processable, small-molecule, donor materials based on an architecture consisting of two diketopyrrolopyrrole (DPP) cores with different aromatic π-bridges between the DPP units and different end-capping groups. In general, this architecture leads to desirable light absorption and electronic levels for donor materials. Out of the compounds investigated, a material with a hydrolyzed dithieno(3,2-<I>b</I>;2′,3′-<I>d</I>)silole (SDT) core and 2-benzofuran (BFu) end capping groups leads to the most favorable properties for solar cells, capable of generating photocurrent up to 800 nm while producing an open-circuit voltage of over 850 mV, indicating a small loss in electrical potential compared to other bulk heterojunction systems. Device properties can be greatly improved through the use of solvent additives such as 2-chloronaphthalene and initial attempts to optimize device fabrication have resulted in power conversion efficiencies upwards of 4%.</P> <P>Graphic Abstract</P><P>A series of small-molecule donor materials based on an architecture consisting of two diketopyrrolopyrrole (DPP) moieties with different core and end groups is reported. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c3ee24351f'> </P>