基于RD算法的星载SAR斜视成像

本文研究了用距离一多普勒（ＲＤ）算法来实现星载 ＳＡＲ的斜视成像处理。给出了星载 ＳＡＲ斜视时的空间几何模型和回波信号模型，详细分析了地球自转和斜视产生的多普勒质心所引起的距离走动差异，及时域和频域校正对成像的影响，并研究了一种改进的ＲＤ算法进行距离走动的校正，此算法能适应大的斜视距离走动和地球自转距离走动。针对不同的距离走动校正进行了计算机仿真，理论分析和仿真结果表明：这种改进的ＲＤ算法是有效的。     

宽带相干源波达方向估计的新方法

相干信号子空间处理方法（ＣＳＭ）是一种通过构造聚焦（ｆｏｃｕｓｉｎｇ）矩阵来估计宽带相干源波达方向（ＤＯＡ）的有效方法。本文基于一致聚焦的概念，给出了一种可用于任意阵列的完全聚焦方法，从而极大地改善了ＤＯＡ的估计分辨率、估计精度等性能，大大降低了估计方法的信噪比阈值。文中在最后通过计算机仿真，与ＣＳＭ方法进行了比较，验证了本方法的优良性能。     

凝析气井井筒动态预测方法

利用垂直管流公式,结合流体相平衡热力学闪蒸计算,运用状态方程模拟,给出凝析气井井筒动态预测新方法.根据该方法.结合油藏数值模拟计算的结果,可准确地预测不同生产时期凝析气井的井筒动态.     

Locally optimum rank detection of correlated random signals inadditive noise

Nonparametric detection of a zero-mean random signal in additive noise is considered. The locally optimum detector based on signs and ranks of observations is derived, for good weak-signal detection performance under any specified noise probability density function. This detector is shown to have interesting similarities to the locally optimum detector for random signals. It may also be viewed as a generalization of the locally optimum rank detector for known signals. Examples of the test statistic of the detector are given for some specific noise probability density functions. Asymptotic and finite sample-size performance of the locally optimum rank detector is also considered     

Design aspects of planar and conventional SMPS transformer: a cost benefit analysis

The intent of this paper is to design a high-frequency transformer that is to be incorporated into the DC/DC pulsewidth-modulated switch-mode power supplies by two different technical approaches: a conventional wound-coil magnetic using copper wires, and a planar magnetic with layered copper tracks on laminated printed circuit board. Comparisons will be made between the two approaches in terms of profile: mounting height and surface area, and performance: power losses and efficiency. Other indicators like temperature rise and leakage inductance that causes electromagnetic interference, and cost, materials, and process fluency are also to be looked into. A sandwiched configuration for primary and secondary windings is proposed for the planar type. Issues arising and typical phenomena encountered will be discussed in detail. Primarily, the dominating factor in performance, cost effectiveness, or circuit compactness that restrains the choice of a particular type is to be evaluated.     

汽油辛烷值智能调合系统

采取一种能够在线学习、不断提高、建立一系列模型的策略，提出了一种具有学习功能的汽油辛烷值智能调合系统。该系统可以根据成品汽油辛烷值指标、生产成本和市场价格等因素提供一个较好的油品调合调度方案。实际应用结果表明，利用参数学习的方法计算调合汽油辛烷值是可行的。     

"台达杯国际太阳能建筑设计竞赛"报名踊跃

作为2007年世界太阳能大会重要组成部分的"2007台达杯国际太阳能建筑设计竞赛"自去年9月正式启动以来报名及作品提交工作进展顺利。本次竞赛得到了社会各界的广泛关注,不论是参赛人员     

电力市场仿真和培训系统的设计及实现

介绍了电力市场仿真和培训系统（PMSTS）的设计及实现。该系统基于 Net Framework框架结构，建立在统一的底层数据库之上，采用模块化结构体系、可视化图形界面，由教员台（客户/服务器结构）、学员台（浏览器/服务器结构）2部分组成，可以仿真不同电力网络在不同市场交易规则下的运行过程，达到培训、指导电力市场参与者的目标，并且对电力市场机制的设计和评估具有重要的理论参考价值。立足于电力市场运作的仿真和培训，该系统可以检验电力市场决策方案的合理性和有效性，能够帮助广大电力系统专业的学生及专业人员理解、熟悉电力交易机制，掌握市场规律。通过IEEE 30节点系统的算例，验证了该系统的有效性和实用性。     

云龙水库大坝表面变形观测资料分析

1工程概况云龙水库是昆明市掌鸠河引水供水工程的水源工程,位于昆明市西北部禄劝县的云龙乡岔河村附近,距昆明市区约86km。大坝坝址选在金沙江水系二级支流掌鸠河上游峡谷河段内,初期规模正常蓄水位2087.97m,校核洪水位2091.98m;终期规模水库正常蓄水位2089.67m,设计洪水位2092.59m,校核洪水位2093.58m。初期规模总库容4.48亿m3,终期规模总库容4.84亿m3,属大(2)型水库工程,工程等别为Ⅱ。水库枢纽建筑物由大坝,泄洪、导流隧洞,引水隧洞,溢洪道等组成。除溢洪道按初期规模兴建外,其余枢纽建筑物均按终期规模兴建。泄洪、导流和引水建筑物布置…     

Inventory routing with continuous moves

The typical inventory routing problem deals with the repeated distribution of a single product from a single facility with an unlimited supply to a set of customers that can all be reached with out-and-back trips. Unfortunately, this is not always the reality. We introduce the inventory routing problem with continuous moves to study two important real-life complexities: limited product availabilities at facilities and customers that cannot be served using out-and-back tours. We need to design delivery tours spanning several days, covering huge geographic areas, and involving product pickups at different facilities. We develop an innovative randomized greedy algorithm, which includes linear programming based postprocessing technology, and we demonstrate its effectiveness in an extensive computational study.