光子纠缠光纤陀螺的光路互易性分析

传统光纤陀螺采用一个宽带光源和一个探测器,输入/输出共用Sagnac干涉仪的一个端口,这种结构构成一种互易性光路,使各种因素引起的两束光波之间的附加相移完全抵消,从而可以非常灵敏地测量旋转引起的Sagnac相移,而光子纠缠光纤陀螺通常采用双端口输入/双端口输出的光路结构,其光路互易性尚未充分认识.利用散射矩阵模型分析了...     

对马海峡决定性会战

六六舰队 日本政府深知要成为世界第一等的强国，占据国际政治体系食物链的顶端，就必须扩充军备，成为与西方诸列强一样的强国。虽然日本在甲午战争中打败了清廷，但日本的舰船制造技术距离西方诸强国还很落后，为了扶植本国的造舰工业．     

Solar wind interaction with lunar crustal magnetic anomalies

Using Lunar Prospector data, we review the magnetic field and electron signatures of solar wind interaction with lunar crustal magnetic sources. Magnetic field amplifications, too large to represent direct measurements of crustal fields, appear in the solar wind over strong crustal sources, with the chance of observing these amplifications depending on upstream solar wind parameters. We often observe increases in low-energy (?100 eV) electron energy fluxes simultaneously with large magnetic field amplifications, consistent with an increase in plasma density across a shock surface. We also often observe low frequency wave activity in the magnetic field data (both broadband turbulence and monochromatic waves), often associated with electron energization, sometimes up to keV energies. Electron energization appears to be correlated more closely with wave activity than with magnetic amplifications. Detailed studies of the interaction region will be necessary in order to understand the physics of the Moon–solar wind interaction. At present, the Moon represents the only natural laboratory available to us to study solar wind interaction with small-scale crustal magnetic fields, though simulation results and theoretical work can also help us understand the physical processes at work.     

以人为本:非营利组织社会营销的核心理念

社会营销作为非营利组织营销的一种新的发展趋势,抛弃了传统营销思维中只重视产品的观念,更加注重消费者欲望需求的满足,更加关爱顾客,重视消费者的利益,体现了新的科学发展观以"人"为本的新的营销理念.     

空用数字影像纪录器——韩制新型航电装备

飞行纪录器是现代军机相当重要的航电装备，特别是对教练机来说，对这项装备对其功能的发挥有相当关键性的影响。韩国在研发出T-50教练机后，需要一种全程型纪录器来匹配，经过数年终于研发出空用数字影像纪录器（Airborne Digital Video Recorder，ADVR）。     

RFNN control for PMLSM drive via backstepping technique

A robust fuzzy neural network (RFNN) control system is proposed in this study to control the position of the mover of a permanent magnet linear synchronous motor (PMLSM) drive system to track periodic reference trajectories. First, an ideal feedback linearization control law is designed based on the backstepping technique. Then, a fuzzy neural network (FNN) controller is designed to be the main tracking controller of the proposed RFNN control system to mimic an ideal feedback linearization control law, and a robust controller is proposed to confront the shortcoming of the FNN controller. Moreover, to relax the requirement for the bound of uncertainty term, which comprises a minimum approximation error, optimal parameter vectors and higher order terms in Taylor series, an adaptive bound estimation is investigated where a simple adaptive algorithm is utilized to estimate the bound of uncertainty. Furthermore, the simulated and experimental results due to periodic reference trajectories demonstrate that the dynamic behaviors of the proposed control systems are robust with regard to uncertainties.     

自适应预测控制在轮胎胎面缠绕系统的应用

论文叙述了轮胎胎面缠绕成型的基本原理,针对一类具有大滞后及模型慢时变的轮胎胎面缠绕控制系统,提出了一种自适应预测控制方案,在胎面缠绕系统的组成及控制原理进行分析的基础上,对其自适应预测控制进行了仿真研究。该方案增强了系统的跟踪性及鲁棒性。     

DC/DC变换器抗辐射试验

文章以ZHDC28S05/18W型数字化DC/DC变换器(额定输入28V,输出5V/3.6A)为例,制定了DC/DC变换器辐射总剂量和单粒子效应试验的方案并进行了摸底试验,根据试验结果更换了集成功率芯片LM2596-ADJ,使产品的抗辐射性能有了明显提高.     

Orbital maneuver and keeping of FORMOSAT-2

This paper presents the orbital maneuver (OM) and keeping of FORMOSAT-2 (or FS2, Formosa Satellite #2) since its launch on 20 May 2004. The successful launch put FS2 in a sun-synchronous parking orbit with 729.94 km perigee and 743.31 apogee. Taiwan’s National Space Organization (NSPO) then spent 11 days to perform the first orbital maneuver (OM#1) and raised FS2 to its sun-synchronous circular mission orbit at 888.47 km altitude. Due to various kinds of disturbances, FS2’s orbit shifts gradually but constantly. Therefore, four times of OM had been performed for orbital keeping. Details of all 5 OMs are described.     

航空运输业排放环境影响评估研究

利用ICAO发动机排放数据库构建了航空运输业排放环境外部成本测算模型,并选取首都国际机场等6个国际机场作为实证研究的对象,测算了其2008年排放产生的环境外部成本,可以看出中国机场普遍存在着显著的排放环境外部成本。同时,针对中国航空运输业的发展现状,提出了通过实施排放权交易制度将中国航空运输业环境外部成本内部化的政策建议。研究成果可用于中国航空运输业排放环境外部成本的测算和治理。