MP-GWO算法在多UCAV协同航迹规划中的应用

多无人作战飞机(UCAV)协同航迹规划是多UCAV协同作战的重要组成部分,对协同作战的结果有很多的指引作用。多UCAV协同航迹规划属于多峰值优化函数求解问题,其求解稳定性比较差。为解决多UCAV协同航迹规划求解稳定性较差的问题,首先在对影响多机协同约束条件研究分析的基础上,结合单机航迹规划求解中的核心指标,建立了多UCAV协同航迹优化函数;其次利用多种群灰狼算法(MP-GWO)在求解多峰值优化函数问题上比较稳定的特点进行求解,最后将MP-GWO分别与GWO算法、EA算法和在新增威胁环境下的求解结果相比较来验证算法的优越可行性。仿真结果表明,MP-GWO算法对多峰值问题具有求解稳定性,能够适应突发威胁环境下的求解。     

红外折/衍混合离轴望远系统设计

本文针对空间光学系统轻型特点,设计了一个二元光学折/衍混合红外反射式望远系统。采用了离轴式格里高利(Gregorian)结构形式,消除了望远系统中的中心遮拦问题。用衍射光学元件校正系统象差,使反射面为球面,二元光学表面尺寸比施密特(Schmidt)校正板(位于入瞳处)缩小于3～4倍,光学设计运用OSLO软件,光学系统的通光孔径φ=120mm,焦距f=-1000mm,波长λ=4.3μm,视场2ω=2°×6°(子午×弧矢),分辨率Res=0.05mm,MTF≥0.4(空间频率fre≤10cl/mm).     

判别线性不等式组相容性的ALN法

本文将ＡＢＳ算法应用到线性不等式组上．给出了一种判别ＡＸ＜０的相容性的方法．     

一个新的杆状病毒凋亡抑制基因的克隆及鉴定

缺失功能性ｐ３５基因的苜蓿尺蠖核形多角体病毒（ＡｃＮＰＶ）突变体（ｖΔＰ３５Ｋ／ｐｏｌ＋）感染草地夜蛾细胞（Ｓｆ９和Ｓｆ２１）［１］及海灰翅夜蛾细胞（ＳＬ２）［２］时，引起细胞凋亡，从而使病毒的感染流产．我们发现海灰翅夜蛾核形多角体病毒（ＳｌＮＰＶ）...     

闹羊花毒素Ⅲ400MHz二维 ~1H NMR的谱研究

闹羊花毒素Ⅲ的结构较为复杂,采用一维1~H NMR 技术难以对谱做明确的指定。本文通过结合使用400 MHz 1~H-1~H 偶合相关、远程增强型的 1~H-1~H 偶合相关和二维 NOE 技术,对标题化合物的1~H NMR 信号的归属问题作了研究,解决了除前人已明确指定的个别信号外的所有其余信号的鉴别和指定。并且,根据二维 NOE 的实验结果,对其相对构型作了证实。这些结果有助于此类化合物的结构和构型的测定。     

科技兴区谱新章

2004年年底，太原市尖草坪区总投资达600万元的电子政务第一期工程正式完工．这在太原市各城区尚属首家。届时．该区118个行政部门、学校即可纳入电子政务网，实现无纸化办公。此举不仅可以大大提高办事效率，而且对政府职能的转变．优化投资环境具有重要的现实意义。     

An enantioselective Michael addition of malonate to nitroalkenes catalyzed by low loading demethylquinine salts in water

An enantioselective Michael addition of malonate to nitroalkenes is efficiently catalyzed by low loading demethylquinine salts in water; the yield range from 49% to 93% and the ee up to 90%.     

Improvement of least-squares finite difference method on simulating slider air bearings in head disk systems

Least-squares finite difference (LSFD) method, one of mesh-free methods, is used to solve slider air bearings problem through discritizing the generalized Reynolds equation into nonlinear systems of algebraic equations. Two approximation schemes for the linearization of these equations are presented and compared. And, some new techniques to search supporting points for the reference node in the mesh-free method were proposed and explored. Therefore, these improvements eliminate some potential limitation of the LSFD method previously published and further facilitate its employment in complex slider models. Advanced step slider as an example of negative pressure sliders is simulated and verified using the improved LSFD mesh-free method in head disk systems.     

Markov traces on cyclotomic Temperley-Lieb algebras

In this note, we use generalized Tchebychev polynomials to define a trace function which satisfies certain conditions. Such a trace will be called the Markov trace. In particular, we obtain formulae for the weights of the Markov trace. As a corollary, we get a combinatorial identity. This generalizes Jones's 1983 result on Temperley-Lieb algebras.