20,098 research outputs found
Untwining multiple parameters at the exclusive zero-coincidence points with quantum control
No full textIn this paper we address a special case of ‘sloppy’ quantum estimation procedures which happens
in the presence of intertwined parameters. A collection of parameters are said to be intertwined
when their imprinting on the quantum probe that mediates the estimation procedure, is
performed by a set of linearly dependent generators. Under this circumstance the individual values
of the parameters can not be recovered unless one tampers with the encoding process itself. An
example is presented by studying the estimation of the relative time-delays that accumulate along
two parallel optical transmission lines. In this case we show that the parameters can be effectively
untwined by inserting a sequence of balanced beam splitters (and eventually adding an extra phase
shift on one of the lines) that couples the two lines at regular intervals in a setup that remind us a
generalized Hong-Ou-Mandel interferometer. For the case of two time delays we prove that, when
the employed probe is the frequency-correlated biphoton state, the untwining occurs in
correspondence of exclusive zero-coincidence (EZC) point. Furthermore we show the statistical
independence of two time delays and the optimality of the quantum Fisher information at the EZC
point. Finally we prove the compatibility of this scheme by checking the weak commutativity
condition associated with the symmetric logarithmic derivative operators
Hui tu zhen ben jing shi mu yu jin gang zuan
No full text著作者余好辯, 伍憤時.Cover title.上下卷.On double leaves, East Asian binding.木魚歌文.zhu zuo zhe Yu Haobian, Wu Fenshi.Shang xia juan.Mu yu ge wen
Supplemental Material, files - Flexible model predictive control based on multivariable online adjustment mechanism for robust gait generation
No full textSupplemental Material, files for Flexible model predictive control based on multivariable online adjustment mechanism for robust gait generation by Sheng Dong, Zhaohui Yuan, Xiaojun Yu, Muhammad Tariq Sadiq, Jianrui Zhang, Fuli Zhang and Cheng Wang in International Journal of Advanced Robotic Systems</p
Yu Takeuchi
No full textYu Takeuchi is serving for JAXA since 2007 and currently working as Associate Senior Administrator at Management and Integration Department of Human Spaceflight Technology Directorate. He is also working as Researcher at the Institute of Space Law of Keio University. He received LL.M. degree from the Institute of Air and Space Law of McGill University in 2015. His main interest is in international space law inter alia the legal aspects of space traffic management and sustainable space development. He is a member of the Air Law Institute of Japan, Japanese Society of International Law, and the International Institute of Space Law (IISL).
Main Works Published in English
- “Toward the International Regime for Space Traffic Management -What to Fix the Current International Regulations-”, (November 5, 2014). Space Traffic Management Conference, Paper 23 (http://commons.erau.edu/stm/2014/wednesday/23).
- “Regulatory Regime for Tomorrow’s Suborbital Space Flights: Point-to-point International Flights”, 56th Colloquium on the Law of Outer Space, 2013.
- “Space Traffic Management as a Guiding Principle of the International Regime of Sustainable Space Activities,” 4 Journal of East Asia and International Law, 2011
- “Japanese Perspective on Legal Issues of Commercial Human Spaceflight” (co-author), 53rd Colloquium on the Law of Outer Space, 2011
- “Legal Points at Issue about NEO Threat Response and International Cooperation” (co-author), 28th International Symposium on Space Technology and Science, 2011
- “From Guideline to International Treaty for Rule of Law concerning Mitigation of Space Debris?” (co-author), 52nd Colloquium on the Law of Outer Space, 2010
Main Works Published in Japanese (title translated into English)
- “What is Space Traffic Management”, Vol. 46, No.9, Journal of the Japanese Institute of International Business Law, 2018.
- Soichiro Kozuka & Masahiko Sato eds., Introduction of Space Law for Entrepreneur (2nd. Ed.), Yuhikaku, 2018. (co-authored)
-“Challenges to International Space Law for Managing Space Traffic”, 55 Kuho (Air Law), 2014.
-“Legal Points as Issues of NEO Threat Response and International Cooperation” (co-author), 3 Spaceguard Research, Japan Spaceguard Association, 2011https://commons.erau.edu/stm-images/1121/thumbnail.jp
Great leaps backward: poverty under Mao.
No full textChina had a long history of premodern growth in just about all categories: empire building and expansion, high yield agriculture, a wide range of inventions and innovations, impressive commercialisation and proto-industrialisation, a very strong foreign trade record and a comfortable living standard. However, all these were ruthlessly challenged by the rise of Western capitalism marked by the opium trade and the First Opium War (1840). If imperial China was noted as a country of political and socio-economic equilibrium, modern China since the Opium War has been a place of swinging changes. Mao’s era from 1949 to 1978 was such a period.
Chao cai liao yong yu ya bo chang ju jiao: ge xiang yi xing hao sun cai liao yu ti du guang xue na mi bo dao guan
No full textKwok, Hui Kin = 超材料用於亞波長聚焦 : 各向異性耗損材料與梯度光學納米波導管 / 郭栩健.Thesis M.Phil. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 67-69).Abstracts also in Chinese.Title from PDF title page (viewed on 26, September, 2016).Kwok, Hui Kin = Chao cai liao yong yu ya bo chang ju jiao : ge xiang yi xing hao sun cai liao yu ti du guang xue na mi bo dao guan / Guo Xujian
Yi ge zai Jianada wei qi si xing qi de Ying yu ke cheng de yu wen ji wen hua xue xi
No full textChan, Sin Yu.Thesis M.Phil. Chinese University of Hong Kong 2015.Includes bibliographical references (leaves 260-268).Abstracts also in Chinese; some appendixes in Chinese.Title from PDF title page (viewed on 11, November, 2016).Chan, Sin Yu
Intractability of Optimal Multi-Robot Path Planning on Planar Graphs
No full textWe study the computational complexity of optimally solving multi-robot path planning problems on planar graphs. For four common time- and distance-based objectives, we show that the associated path optimization problems for multiple robots are all NP-complete, even when the underlying graph is planar. Establishing the computational intractability of optimal multi-robot path planning problems on planar graphs has important practical implications. In particular, our result suggests the preferred approach toward solving such problems, when the number of robots is large, is to augment the planar environment to reduce the sharing of paths among robots traveling in opposite directions on those paths. Indeed, such efficiency boosting structures, such as highways and elevated intersections, are ubiquitous in robotics and transportation applications.Peer reviewe
Er tong shui mian jie lü: zheng chang can kao zhi, xiang guan yin su, dui jian kang de ying xiang, he gan yu gai shan
No full textYu, Xinting.Thesis Ph.D. Chinese University of Hong Kong 2014.Includes bibliographical references (leaves 188-207).Abstracts also in Chinese; appendixes in Chinese.Title from PDF title page (viewed on 14, September, 2016).Yu, Xinting
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