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朱载堉《论大阴阳小阴阳第十一》解读
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作者 张志庄 《河南理工大学学报(社会科学版)》 2010年第3期365-369,共5页
在对朱载堉《论大阴阳小阴阳第十一》解读之基础上,运用列表图示方法对朱氏原文作了直观的阐释,分析评述了十二律吕之内涵,揭示了朱氏所论大阴阳、小阴阳之规律,客观评述了朱氏所论律吕上生、下生、左转、右旋等,恰当地解读了朱载堉密... 在对朱载堉《论大阴阳小阴阳第十一》解读之基础上,运用列表图示方法对朱氏原文作了直观的阐释,分析评述了十二律吕之内涵,揭示了朱氏所论大阴阳、小阴阳之规律,客观评述了朱氏所论律吕上生、下生、左转、右旋等,恰当地解读了朱载堉密律的阴阳属性。 展开更多
关键词 阴阳 小阴阳 上生 下生
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“大阴阳与蕤宾重上”和“小阴阳与蕤宾下生”——二十四史中八部律志相关文献综述及其《历代乐志律志校释》解读
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作者 丁慧 《湖北师范学院学报(哲学社会科学版)》 2012年第1期58-69,共12页
古人对"蕤宾重上"与"蕤宾下生"的争论是持续的,在取舍上有分有合,明代朱载堉《律学新说》就有明确论及"大阴阳与蕤宾重上"和"小阴阳与蕤宾下生"两种不同的生律排列方法,并指出大阴阳是建立在... 古人对"蕤宾重上"与"蕤宾下生"的争论是持续的,在取舍上有分有合,明代朱载堉《律学新说》就有明确论及"大阴阳与蕤宾重上"和"小阴阳与蕤宾下生"两种不同的生律排列方法,并指出大阴阳是建立在小阴阳的基础上,在一个八度内按高低长短顺次的数理逻辑,小阴阳服从大阴阳的范畴。但在此观点产生之前,中国古代生律法的排列次序是怎样的?何时采用"大阴阳与蕤宾重上"?何时保持"小阴阳与蕤宾下生"?本文拟对二十四史中八部律志进行详细分析,另参阅丘琼荪《历代乐志律志校释》对其的解读,纵向梳理各史书律志的承袭关系,横向比较不同时期的生律法排列异同,对"大、小阴阳"与"蕤宾重上、下生"的历史原貌作一个初步的古代文献综述。 展开更多
关键词 二十四史 八部律志 阴阳 蕤宾重上 小阴阳 蕤宾下生
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Venus round trip using solar sail 被引量:1
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作者 ZHU KaiJian ZHANG RongZhi +2 位作者 XU Dong WANG JiaSong LI ShaoMin 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2012年第8期1485-1499,共15页
Trajectory optimization and simulation is performed for Venus round trip (VeRT) mission using solar sail propulsion. Solar gravity is included but atmospheric drag and shadowing effects are neglected in the planet-cen... Trajectory optimization and simulation is performed for Venus round trip (VeRT) mission using solar sail propulsion. Solar gravity is included but atmospheric drag and shadowing effects are neglected in the planet-centered escape and capture stages. The spacecraft starts from the Geostationary orbit (GEt) at a predetermined time to prepare a good initial condition for the Earth-Venus transfer, although the launch window is not an issue for spacecraft with solar sails. The Earth-Venus phase and the return trip are divided into three segments. Two methods are adopted to maintain the mission trajectory for the VeRT mis- sion and then compared through a numerical simulation. According to the first approach, Planet-centered and heliocentric ma- neuvers are modeled using a set of blended analytical control laws instead of the optimal control techniques. The second pro- cedure is the Direct Attitude Angle Optimization in which the attitude angles of the solar sail are adopted as the optimization variables during the heliocentric transfer. Although neither of the two methods guarantees a globally optimal trajectory, they are more efficient and will produce a near-optimal solution if employed properly. The second method has produced a better result for the minimum-time transfer of the VeRT mission demonstrating the effectiveness of the methods in the preliminary design of the complex optimal interplanetary orbit transfers. 展开更多
关键词 venus round trip solar sail analytical control laws direct attitude angle optimization
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