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| 1 | Reverse reconciliation for continuous variable quantum key distribution显示文摘An efficient and practical post-processing technique based on reverse reconciliation for continuous variable quantum key distribution is proposed and simulated with low-density parity check (LDPC) codes. MultiLevel Coding/ MultiStage Decoding, which fully utilizes optimization technique such as vector quantization and iterative decoding and the optimal channel coding most close to the Shannon limit, was used to realize efficient reverse reconciliation algorithm. Simulation results showed that the proposed method can improve the secure key distribution rate to 2.2 kb/s and the coding efficiency to 0.89 over 20 km in single-mode optical fiber. Moreover, there still is room for much improvement. | LU ZhiXin 1,2 , YU Li 1,2 , LI Kang 1,2 , LIU BingCan 1,2,3 , LIN JianGui 1,2 , JIAO RongZhen 1,2 & YANG BoJun 1,21 School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China 2 Key Laboratory of Information Photonics and Optical Communication, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China 3 Department of Fundamental Courses, Academy of Armored Force Engineering, Beijing 100072, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，1： | 12 |
| 2 | Emerging importance of shale gas to both the energy & chemicals landscape显示文摘This perspectives article is intended highlight the growing importance and emergence of shale gas as an energy resource and as a source of chemicals. Over the next decades huge amounts of newly discovered deposits of trapped gas are expected to be produced not only in the USA but elsewhere providing a wealth of methane and ethane not only used for energy production, but also for conversion to lower hydrocarbon chemicals. This manuscript seeks to focus on the potential of trapped natural gas around the world. The potential new volumes of trapped gas within shale or other mineral strata coming to the marketplace offer a tremendous opportunity if scientists can invent new, cost effective ways to convert this methane to higher value chemicals. Understanding how to selectively break a single C-H bond in methane while minimizing methane conversion to CO2 is critical. | John N. Armor | 2013 | Journal of Energy Chemistry2013，22，1： | 5 |
| 3 | Theoretical calculation of the finishing rolling impact work in non-quenched and tempered Si-Mn steel显示文摘Based on the hot-continuous rolling technology, the finishing rolling impact work α k of the non-quenched and tempered Si-Mn steel is theoretically calculated with the covalent electron number nA of the strongest bond in alloying phases, and the smallest interface electron density difference Δρ of alloying phase interface and the number of atom states σ which keep the interface electron density continuous. Calculations show that the solution strengthening, the precipitation strengthening, and the interface strengthening will result in the decrease of the finishing rolling impact work α k, and the effects of the number of atom states σ which keep the interface electron density continuous on the finishing rolling impact work α k are different. Taking the impact work and the number of atom states σ 0 keeping the electron density continuous of the phase interface α-Fe/α-Fe-C between α-Fe and α-Fe-C as reference values, the impact work of the interface will increase when σ of some interface is larger than σ 0; otherwise, the impact will decrease. Therefore, the finishing rolling impact work α k can be calculated with the impact value of the refined α-Fe matrix and the influence amounts caused by the solution strengthening, the precipitation strengthening, the interface strengthening, and the number of atom states σ which keep the interface electron density continuous. The calculated results agree well with the measured ones. In this paper, the effect of S on the impact work is also discussed. | LIU Zhilin1, LIN Cheng1 & WANG Ping2 1. Department of Materials and Chemical Engineering, Liaoning Institute of Technology, Jinzhou 121001, China 2. Mechanical Department, Armor technique Institute of PLA, Changchun 130117, China | 2006 | Science China(Technological Sciences)2006，49，2： | 5 |
| 4 | Eigenstructure Assignment in a Class of Second-order Descriptor Linear Systems: A Complete Parametric Approach显示文摘In this paper eigenstructure assignment via proportional-plus-derivative feedback is investigated for a class of second-order descriptor linear systems. Under certain conditions, simple, general and complete parametric solutions of both finite closed-loop eigenvector matrices and feedback gain matrices are derived. The parametric approach utilizes directly original system data, involves manipulations only on n-dimensional matrices, and reveals all the design degrees of freedom which can be further utilized to achieve certain additional system specifications. A numerical example shows the e?ect of the proposed approach. | Guang-Ren Duan Center for Control Theory and Guidance Technology, Harbin Institute of Technology, P. O. Box 416, Harbin, 150001, PRC Guo-Sheng Wang Department of Control Engineering, Academy of Armored Force Engineering, Beijing, 100072, PRC | 2005 | International Journal of Automation and computing2005，2，1： | 4 |
| 5 | 提问行为研究(英文)显示文摘外语教师课堂提问作为教师课堂话语的一个重要组成部分在外语教学界正在受到普遍的关注。本文作者基于自身多年的EFL教学经验,结合经常性的实地观摩,对外语教师在EFL课堂上的提问行为进行了大量的观察和分析,希望在客观展示课堂提问行为的同时,能够突破纯粹的为技巧而研究技巧的思维模式,把课堂提问的表面行为与教学双方的心理感受和情感交流作为研究提问行为,总结提问技巧,指导日常教学的切入点。本文通过第一手的课堂观摩记录真实的再现了EFL课堂提问存在的问题,并通过对实际情况的分析,得出了几条不能称之为'技巧'的教训:教师提问不能次序颠倒,不能对象混淆;不能急于求成,不能中途换将;不能为难学生,不能挫伤兴趣和自尊;不能只提问少数,不能忽略大多数。 | Yan Wenjun Armored Force Engineering Institute | 2002 | Chinese Journal of Applied Linguistics2002，25，1： | 3 |
| 6 | Microstructure and Tribological Properties of PlasmaSprayed Ni/MoS_2 Solid Lubrication Coating显示文摘A composite Ni based MoS2 solid lubrication coating was prepared using the plasma spraying technology with optimized process parameters.The tribological properties of the composite Ni/MoS2 coatings in air and vacuum were studied with a ball-on-disk friction and wear tester under dry sliding condition,respectively.XRD,SEM and EDS were adopted to analyze the microstructures of the coating before and after wear tests.Results showed that the deposition quality of the coating was good.The content of lubricant MoS2 was high.But the compactability of the coating with many superficial micrometersized defects such as pores and cracks was relatively low.The composite Ni/MoS2 coating exhibited excellent friction-reduction properties both in air and in vacuum conditions.In vacuum,the wear loss was greater because the severe spalling of top layer resulted from breakthrough of the adjacent defects.In air condition,the wear loss of the coating was relatively low but its friction-reduction ability may be weakened for the oxidation of MoS2. | Ma Guozheng,Xu Binshi,Wang Haidou,Yang Daxiang National Key Laboratory for Remanufacturing,Academy of Armored Forces Engineering,Beijing 100072,China | 2012 | 稀有金属材料与工程2012，41，S1： | 3 |
| 7 | Catalytic Reduction of Nitrogen Oxides with Methane in the Presence of Excess Oxygen显示文摘 | Armor J N | 1995 | Catal Today1995，26，： | 1 |
| 8 | Review of Pharmacist Contributions to Diabetes Care in the United States显示文摘 | Armor BL Britton ML Dennis VC | 2010 | J Pharm Pract2010，23，3： | 1 |
| 9 | Selective catalytic reduction of NOx with methane over metal exchanged zeolites 显示文摘 | LI Y ARMOR J N | 1993 | Appl Catal B : Environ1993，2，23： | 1 |
| 10 | The multiple roles for catalysis in the production of H2显示文摘 | Armor J N | 1999 | Applied Catalysis A-General1999，176，2： | 1 |
| 11 | Effect of water-vapor on the selective reduction of NO by methane over cobalt-exchanged ZSM-5 显示文摘 | LI Y BA'I'FAVIO P B ARMOR J N | 1993 | J Catal1993，142，2： | 1 |
| 12 | Review:The multiple roles for catalysis in the production of H2显示文摘 | Armor J N | 1999 | Applied Catalysis A:General1999，176，： | 1 |
| 13 | 显示文摘 | Armor J N Braymer T A Farris T S | 1996 | Applied Catalysis B1996，7，： | 1 |
| 14 | Ammoxidation of Ethane to Acetonitrile over Co-beta Zeolite 显示文摘 | Li Y J Armor J N | 1997 | Chem Commun1997，20，： | 1 |
| 15 | Ammoxidation of Ethane to Acetonitrile over Metal-zeolite Catalysts 显示文摘 | Li Y J Armor J N | 1998 | J Catal1998，173，2： | 1 |
| 16 | Environmental catalysis显示文摘 | ARMOR J N | 1992 | Appl Catal B1992，1，4： | 1 |
| 17 | The multiple role for catalysis in the production of H2 显示文摘 | Armor N J | 1999 | Applied Catalysis A:General1999，17，2： | 1 |
| 18 | A Reaction Pathway for the Ammoxidation of Ethane and Ethylene over Co-ZSM-5 Catalyst 显示文摘 | Li Y J Armor J N | 1998 | J Catal1998，176，2： | 1 |
| 19 | Positive illusions and coping with adversity显示文摘 | Taylor S.E Armor D.A | | 0，，04： | 1 |
| 20 | The multiple roles for catalysis in the production of H2显示文摘 | Armor J N | 1999 | Appl Catal A: Gen1999，176，： | 1 |
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