GLMB extended target tracking based on one-step data association

Due to the inseparability of measurements in neighborhood scenarios, the tracking performance of the traditional extended target tracking algorithm would degrade. In this paper, a new extended target tracking algorithm based on one step data association is proposed to solve the problem. First, the algorithm models the target with a multiplicative noise model. And then, the one step data association method in the Joint Probabilistic Data Association (JPDA) theory is combined with a Generalized Labeled Multi-Bernoulli (GLMB) filter. Simulation results show that the algorithm can track the target in cross and neighborhood scenarios effectively and that it is superior to the traditional extended target tracking algorithms based on measurement partition in estimation accuracy.     

土体的椭圆——抛物双屈服面模型及其柔度矩阵

本文证明了以经典塑性为基础的弹性模型的土体应力－应变柔度矩阵不能满足主对角线元素应占优的要求，为此作者提出了修正椭圆－－抛物双屈服面模型。     

钛酸锶铋介电陶瓷中MgO掺杂研究

本文研究了锶铋钛陶瓷中ＭｓＯ的掺杂效应，发现ＭｇＯ对材料的相结构和介电性能产生很大影响，随ＭｇＯ含量的增加，材料介电温度稳定性提高．作者根据Ｋ．Ｌｉｃｈｔｅｎｅｃｈｅｒ规则以及元素替代效应，讨论了ＭｇＯ相、材料体内元素替代以及电荷施受主补偿对材料缺陷机构和介电性能的影响．     

东濮盆地下第三系沙河街组湖泊沉积中的痕迹化石组合特征

东濮盆地下第三系沙河街组湖泊沉积中的痕迹化石丰富.在所观察的十几口取芯井段中共采得痕迹化石14属19种,可归入六个组合.1)Skolithos SP.2—Muensteria SP.1组合,反映滨浅湖沉积和三角洲前缘沉积中的痕迹化石面貌;2)Arenicolites SP.—Skolithos SP.1组合,是水下扇中扇区席状砂沉积中的痕迹化石组合;3)Skolithos SP.3组合,是水下分流河道砂体中特有的痕迹化石组合:4)TrichichnusSP.——Muensteria SP.2——Gordia SP.组合,产于三角洲远端坝或水下扇席状砂沉积中;5)Helminthopsis SP.——Cruziana problematica——细分枝痕迹组合,反映了前三角洲至深湖泥岩中的痕迹化石特征;6)Chondrites SP.2组合,是咸化深湖沉积中特有的组合.     

A New Method for Extraction of Fuzzy Rules from Small Samples

0~adosAdesignmethodisselectedaccoldingtotheobjectandtheenvironmentfortheconealengineeringandsimulahonsystem.ThemathematicalmodelingisalmoStimPOssibleforsomecomplexcontrolsystem.fothefuZZycontroliswidelyappliedforitSindependenceofthemathematicalmodelingOftheobject["'].However,expertcontrolrulesaregenelallyreqUiredforsystemdesign.Whatcanbeobtainedinsomecasesarenumericalsampledatafromcontroloperationsensorsratherthansuchcontrolrules.ThisreqUirestheextractionof"if-then"fUZZyconealrulesfromthe…     

丙烯酸及其月桂醇醚酯共聚物的水溶液流变行为

合成了丙烯酸月桂基聚乙二醇（２３）酯（ＬＰＧ２３），并与丙烯酸（ＡＡ）在无分散剂情况下进行了水溶液共聚。产物在盐水或加有小分子乳化剂的水溶液中显示了与聚丙烯酸不同甚至相反的流变性能，笔者认为这是分子链上憎水基团的缔合力与带电基团的排斥力共同作用的结果。     

Book Reviews

Gillies, Donald, Artificial Intelligence and Scientific Method
Gurney, Kevin, An Introduction to Neural Networks     

攻击一种密钥流生成器的新方法

论文针对Ｊ．Ｄ．Ｇｏｌｉｃ给出的以钟控序列生成器为组合块的非线性组合生成器的统计模型，文中给出了一种基于转移概率的最大后验概率判炔新方法。这种方法从理论上讲要优于Ｊ．Ｄ．Ｇｏｌｉｃ的基于ＣＬＤ的攻击方法，模拟的结果也证明了这一点。     

试论农村专业合作组织在农业产业化经营中的地位

为了深入研究农村专业合作组织在农业产业化经营中的地位,提出了经济利益圆周假说。该假说是对经济人有限理性的精确化表述和动态化分析：即一定时期内,任何经济人的所有经济行为的最终结果,都会形成一个以自我为中心,以有效经济利益为半径的经济利益圆周．依据经济利益圆周假说,对比分析了当前我国农业产业化经营两种典型模式的经济效率．结果表明,“公司 农户”的农业产业化经营模式缺乏长期经济效率,“公司 专业合作组织 农户”的农业产业化经营模式更加符合经济效率原则。农村专业合作组织是农业产业化经营的有效载体。     

Toward a formal study of jazz chord sequences generated by Steedman’s grammar

This paper shows how to generate jazz chord sequences incrementally using Steedmans grammar by taking advantage of some formal properties. We point out the specific role played by particular chord sequences called cadential sequences. By precompiling them, one could improve the implementation of Steedmans grammar in a real-time improvisation system, and make it more reactive to the inputs of the user.I thank Mark Steedman for his comments on this text.