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Delaunay Triangulation-based Hazard Area Avoidance for Spacecraft safe landing Simiao Fei 1, a, Yu Zhao 2, Jun Yang 3 and Lin Huo 4 1,2,3,4 Dept. of System Engineering of Engineering Technology, BeiHang University, Beijing 100191, China afeisimiao@yahoo.com.cn Keywords: Delaunay Triangulation; Safe landing; Optimal landing area Abstract.
For example, Shao wei uses morphology searching optimal landing area [6], and Tian yang uses motion estimation theory for evaluating obstacle spots when consider slopes [7].
Journal of astronautics 29, 2 [7] Tian Yang; Cui Ping-yuan; Cui Hu-tao (2010).Landing Site Assessment and Probe Motion Estimation Based on Image, Journal of Astronautics 30,1 [8] VIVIJiming, Shen Longjun, Zhang Jinglin (2001).

Effect of foaming temperature and holding time on foam glass Long Wu, Yihong Zhao1, a, Rongfa Chen, Hua Yang, Qingqing Li,Zhilong Li, Huafeng Lu 1College of Mechanical Engineering, Yangzhou University, China, ae-mail: Yihongzhao99@sina.com Key Words: foam glass, foaming temperature, holding time, mould Abstract.
[3] TIAN Ying-liang 1, QU Pei-yuan.
[5] TIAN Ying-liang  SUN Shi-bing  ZHANG Lei.
[8] TIAN Ying-liang, Zou Yu-lin, ZHAO Fei, Wu Jun.  
[10] TIAN Ying-liang, ZHAO Fei, ZOU Yu-lin, WU Jun.  

The natural landscape main have Tian Zi Castle, Ji Ha Stockade, Tai Bai Rock; historical and cultural landscape main have Xi Shan Bell Tower, Bei Shan Temple,Mi Tuo Temple(there ever have Bai Yan Academy, Qing Yang Temple, Bell Tower and so on).
Character of Contrary Space Sequence Composition of Wanzhou area 2.1 Outer space composition analysis According to the principles of Contrary Space Sequence combinations, Wanzhou area at this stage of the external environment mainly in the peri-urban,including Tian Zi Castle, Ji Ha Stockade,Bei Shan Mountain, Tai Bai Rock,Cui Ping Mountain and other mountains landscape, as well as the Yangtze River, Tian Xian Lake external water landscape; and the Xi Shan Bell Tower, Mi Tuo Temple,and other artificial commanding point architectural landscape.
Outer Exchangeability Space -- City, Cui Ping Mountain, Tian Sheng Cheng park, Tai Bai Rock park and many other relatively high mountain form the Outer Exchangeability Space Skeleton, The line of sight permeat and naturl betwen mountain.
Gao Sun Tang square, Tian Sheng Cheng park, Tai Bai Rock park, such as the public square are Obstruct and Stay Space elements, Citizen square area is larger, the line of sight is broad, and with Bei Shan mountain, Tian Sheng Cheng park, Xi Shan Bell Tower form the line of sight exchange.
Landscape Visual Basic is completely separated, the whole square within buildings enclosing well type space, no sight passage and external connection, the previous Tian Sheng Cheng, Ji Ha Stockade, Yangtze River already vanished.

Zhu Nanotechnology 17 (2006) 30–34 [3] P.Yang, H.
Tian, and Yi’an Liu Appl.
Dinh, J.H.Yang, S.
Yang Semicond.
[22]- Fen Xu, Yi Xie, Xu Zhang, Shuyuan Zhang, Xiamming Liu, Wang Xi, and xiabo Tian Adv.

Design and Research of High-speed CNC Platform Based on DCG Tian Xia 1,a， Peng Liu 1,b， Xiang-yang Jiang 2, Ying Huang 1 1Shannxi University of Science & Technology, Xi’an, China 2 Institute No.202 of China Arms Industry Group Corporation, Xianyang, China a492487352@qq.com , b343024961@qq.com Keywords: ADAMS; DCG; CNC Platform Abstract.
[3] Zhou Yong, The Analysis of Dynamic Characteristics and The Research of Motion Control about High Speed Feed Drive System, Huazhong university of science and technology, 2008 [4] Yu Fei-peng, Jia Hong-she, Data exchange between ADAMS and CAD software UG and SolidWorks, Modern Manufacturing Engineering, 2005，(10):37-39 [5] Xia Tian, The design of CNC machining centre, Chemical Industry Press, Bei Jing, 2006 [6] Chen De-min, Huai Chuang-feng, Zhang Ke-tao, Proficient in adams2005/2007 virtual prototype technology, Chemical Industry Press, Bei Jing, 2010.

Tian, J.
Yang, K.Dua, W.Y.
Tian, Q.J.
Yang and Y.X.
Yang and M.L.

Arbitrary Curvature Radius Of the Optical Parts Precision Polishing Technology Yang Mo1, Guo Zhong-da2, Yang Zhi-qiang3 School of Photoelectric Engineering of Xi’an Technological University, No.2, the Middle of Xue Fu Road, Wei yang District, Xi’an city, Shannxi Province, 710021, China 1momoo521@126.com, 2gzd6@163.com Keywords: Arbitrary curvature radius, Magnetorheological, Processing of optical parts, Endless belt structure, Surface contact, Polishing technology, Ultra-smooth surface Abstract: This paper puts forward a kind of magnetorheological polishing technology of arbitrary curvature radius spherical optical parts and the mechanical structure of its supporting equipment.
References [1] Moss T. , Optics manufacturing: It’s not the same old grind [J], Photonics Spectra, 1994. (12):80~92 [2] Wang Shu-xing, The research of the polishing process of optical parts’ fixed abrasive [J], Instrument Manufacturing, 1982.5.1: 1~5(in Chinese) [3] Stowers I F., Komanduri R, Baird E D., Review of precision surface generating processes and their potential application to the fabrication of large optical components [J], Proc of SPIE, 1988.966: 62~73 [4] Liu Wei-guo, Guo Zhong-da, Yang Zhi-qiang, Chen Zhi-li, Mi Qian, Hang Ling-xia, Wang Hong-jun, Tian Ai-ling, A processing method of arbitrary curvature radius of the optical parts and its apparatus [P], Chinese patent, CN102765029A, 2012.11.7(in Chinese)Chinese patent, CN102765029A [P], 2012.11.7 [5] Shu Chao-lian, Tian Ai-ling, Hang Ling-xia, Guo Zhong-da, Modern optical manufacturing technology [M], National Defence Industry Press, 2008.5.1(in Chinese) [6] Zhou Yan, The analysis of the main factors for affecting the
ultra-smooth quality during the classical polishing [J], Chemical Engineering & Equipment 2008.10:89~92 (in Chinese) [7] Yang Zhi-qiang, Guo Zhong-da, Chen Zhi-li, Liu Wei-guo, A method of magnetorheological polishing [J], Applied Optics, 2009.5.

Tian, and S.
Yang: Chem.
Tian, and S.
Yang, J.
Yang, J.

A Fractional-order Laplacian Operator for Image Edge Detection Dan Tian, Jingfei Wu, Yajie Yang School of Information Engineering, Shenyang University, Shenyang, 110044, China E-mail:www.sltd2008@163.com Keywords: Fractional-order, Edge detection, Laplacian Operator, Thresholding Selection Abstract.
Vol. 41(2013), p. 257 [6] Tian D, Xue D, Chen D, et al.

Furthermore, the current LCT results showed the similar trend when compare with the published LCT data of Yang and Lin[1].
For all the micro-tubes, the heat transfer data trend is similar.As comparing to the LCT data of Yang and Lin [1], the current data trend for all micro-tubes is also similar.
In the entire flow regime, the maximum deviation between the current data and Yang and Lin’s [1] data is less than 15%.
Yang and T.
Tian in: Effect of surface roughness on heat transfer and fluid flow characteristics at low reynolds number in small diameter tube, Heat Transfer Enginnering, 24 (3), (2003) 4-16