ADAPTIVE AND ACTIVE COMPUTING PARADIGM FOR PERSONALIZED INFORMATION SERVICE IN DISTRIBUTED HETERONGEOUS ENVIRONMENT

Pull basedinformationservicesuchassearchengineandfull textretrievalserveusersinare trieval on demandmodewhenuserneedtofindwhathe/shewants .Howeverwiththeexplosivegrowthoftheinternettechniques,locatingrelevantinformationistimeconsumingandexpensive ,pushtechnologypromisesaproperwaytorelieveusersfromthedrudgeryofinformationsearching .Somecurrentcommercesoftwareor prototypesystemssuchasPointCastNetwork ,CNNNewswatch ,SmartPush,ConCallserveusersinapersonalizedway[1 3 ] ,whilerecommendationsyst…     

并行计算机990STAR—1的系统结构及其地震数据处理应用

分析了分布式并行处理系统９９０ＳＴＡＲ－１的系统结构特征，讨论了它的操作运行环境，剖析了在这种多处理器同步系统上实现异步算法的缓冲机制，以地震数据处理为例，介绍它的应用现状及发展前景，对系统性能也作了评估分析。     

New Retrieval Method Based on Relative Entropy for Language Modeling with Different Smoothing Methods

A language model for information retrieval is built by using a query language model to generate queries and a document language model to generate documents. The documents are ranked according to the relative entropies of estimated document language models with respect to the estimated query language model. Two popular and relatively efficient smoothing methods, the Jelinek- Mercer method and the absolute discounting method, are used to smooth the document language model in estimation of the document language, A combined model composed of the feedback document language model and the collection language model is used to estimate the query model. A performacne comparison between the new retrieval method and the existing method with feedback is made, and the retrieval performances of the proposed method with the two different smoothing techniques are evaluated on three Text Retrieval Conference （TREC） data sets. Experimental results show that the method is effective and performs better than the basic language modeling approach; moreover, the method using the Jelinek-Mercer technique performs better than that using the absolute discounting technique, and the perfomance is sensitive to the smoothing peramters.     

山区等外级农路改扩建工程超高加宽取值研究

依据云南某县山岭重丘区农村公路实际项目分析研究,结合项目的特殊性,通过横向力系数及极限半径计算超高值,根据现行规范取值要求选取加宽值,并确定过渡段长度。研究结果表明,转弯半径R15 m的路段设置超高、加宽;最大超高值为4%,路面加宽值1.5 m;超高、加宽过渡段采用15 m,可以满足道路实际通行需求。     

交通安全设施路面标线用玻璃珠质量评价技术

结合相关标准和实际质量评价工作,对公路上玻璃珠的外观、粒径分布、成圆率、密度、折射率、耐水性和磁性颗粒含量等质量指标的检测评价方法进行详细阐述和说明,可供相关工程参考和借鉴。     

“打的”游西欧

一、德国 德国的出租车都是奔驰、奥迪之类的车。车外壳多是淡黄色,顶上有TAXI字样的黄黑牌子。这个牌子如果亮着（夜里比较明显）,就说明这辆车是空的。起步价每个城市不同,一般是2欧元（1欧元约合10元人民币）。如慕尼黑起步价是2.60欧元,每公里的费用按路程的长短而定,路途越长公里费就越便宜。     

12台恒通客车 开启扩疆斐济序幕

公交运输方案解决专家恒通客车70年来孜孜不倦,不断加强自身在公交客车方面的专业能力,深入研究各地的区域道路特征、交通状况、能源、公众需求等存在的差异,坚持自主研发独有的高科技术。近来,恒通客车更是开疆拓土,喜讯频传,不仅畅销国内市