Impact of the closure of Indonesian seaway on climate: A numerical modeling study

Using a global OGCM and its relevant coupled ocean-atmosphere GCM with the contemporary, 6 MaBP and 14 MaBP oceanic topography, respectively, a series of numerical experiments are implemented in order to investigate the effect of the north shift of Australian continent on the tropical oceanic circulation, especially the formation of the western Pacific warm pool. The numerical experiments of the individual OGCM forced by the modern atmospheric circulation indicate that the closure of Indonesian passage results in warming in the tropical Pacific Ocean and cooling in the tropical Indian Ocean; furthermore, it also results in change in source of the Indonesian Through Flow (ITF) water, e.g. ITF mainly originates from the south Pacific at 14 MaBP, but it mainly originates from the north Pacific now. The coupled model shows similar results as the individual OGCM qualitatively.     

浅谈Pool功能在大容量移动通信网络的优化组网应用

本文通过对MSCPool原理进行分析,提出大城市移动通信网络的组网建议。     

太平洋暖池强化通量阵海域IFA气象要素的逐月变化

根据１９９２年１１月至１９９３年２月在太平洋暖池强化通量阵海域，四艘海洋调查船同步连续观测的气象资料，统计出该海域气温、海表温、气压和风和逐月变化。     

基于J2EE数据库访问性能的优化方法

阐述了基于J2EE的应用系统中，改善数据库访问性能，提高执行效率的几种方法，为合理有效的开发软件系统提供设计标准和开发手段。     

基于JSP的中小企业电子商务网站构建

随着电子商务的不断发展,中小企业如何利用有限的资金搭建自己的电子商务网站,显得非常重要.文章对比几种动态网页技术,分析了JSP技术的优势,介绍了JSP网站的三层结构模式,并通过一个网上书店实例,给出了使用JSP技术构建中小企业的电子商务网站的具体实现方法.     

A gene-pool based genetic algorithm for TSP

Based on the analysis of previous genetic algorithms (GAs) for TSP, a novel method called Ge- GA is proposed. It combines gene pool and GA so as to direct the evolution of the whole population. The core of Ge- GA is the construction of gene pool and how to apply it to GA. Different from standard GAs, Ge- GA aims to enhance the ability of exploration and exploitation by incorporating global search with local search. On one hand a local search called Ge- Lo-calSearch operator is proposed to improve the solution quality, on the other hand the modified Inver-Over operator called Ge- InverOver is considered as a global search mechanism to expand solution space of local minimal. Both of these operators are based on the gene pool. Our algorithm is applied to 11 well-known traveling salesman problems whose numbers of cities are from 70 to 1577 cities. The experiments results indicate that Ge- GA has great robustness for TSP. For each test instance, the average value of solution quality, found in accepted time, stays within 0. 001% from the optimum. Foundation item: Supported by the National Natural Science Foundation of China (70071042, 60073043, and 60133010) Biography: Yang Hui ( 1979-), female, Master candidate, research direction; evolutionary computation.     

基于聚类分析的崇州罨画池匾额研究

以唐代衙署园林罨画池匾额为研究对象,利用聚类分析法对匾额的形制和主题进行分析,希望找到匾额在西蜀园林美学体验中的规律性.结果显示:①罨画池中大多数建筑都有匾额,有的甚至悬挂多个匾额.由于建筑功能的不同,匾额的分布体现了区域的特征.②罨画池匾额形制多变.以木质匾额为主,在底色、字色、装饰及文字篆刻等方面富于变化.对形制聚类后分为4类:异形匾、竖匾、有框横匾和无框横匾.③罨画池公园匾额具有丰富的主题内涵.对主题进行聚类后分为2类:缅怀型匾额和抒怀型匾额.匾额通过细腻的形制细节和贴切的主题内涵,强调了祭祀区、游览区和纪念区各自的功能.     

Power Pool模式电力市场最优备用容量及定价

Power Pool 模式电力市场中最优备用容量的确定及其定价问题是非常重要和复杂的.文中在有关研究文献的基础上,建立了最优备用容量模型,并根据该模型研究了最优备用容量的定价和用户侧电价的确定问题.研究结果表明,某时段的最优备用容量完全由该时段的电力负荷需求量概率分布、单位余电损失和单位缺电损失决定;最优备用容量的价格可由实际上网电价和预测负荷需求电价决定;用户侧预期电价由带网损的结算电价、Power Pool合理收益和预期额外损失组成.     

过冷核态池沸腾的分形模型

本文提出过冷核态池沸腾热传递的分形模型,根据加热表面活化点的分形分布得到了过冷核态池沸腾热流密度的表达式．从该模型中发现过冷流动沸腾热流密度是壁面过热度、流体的过冷度、流体的接触角与流体物理特性的函数关系,并且没有增加新的经验常数．对不同的过冷度,模型预测的结果与实验数据进行了比较,两者是极好的吻合．     

Youger Dryas and Heinrich events recorded by magnetic susceptibility of sediments from the central temperature area of Western Pacific Warm Pool

Three short geomagnetic excursions, the Go thenburg, Mono Lake and Mungo (or Maelifell) in the Brunhes Positive Polarity period, were revealed based on the studies of magnetostratigraphy, susceptibility (χ) and δ^18O of sediments in core WP 92-5 from the central temperature area of the Western Pacific Warm Pool (WPWP), and the ages of them are 12.1--11.3 kaBP, 25.0--24.0 kaBP, and 31.0--28.0 kaBP respectively. Furthermore, the Younger Dryas (YD) and Heinrich (H) cold events were also discovered in this core by the susceptibility record. The YD cold event occurred at the depth of 30--22 cm with an age of 11.5--10.6 kaBP; H1, H2 and H3 cold events occurred at depths of 51--39 cm, 108---91 cm and 140--126 cm with ages of 15.1--13.0 kaBP, 25.0--22.1 kaBP and 30.6---28.2 kaBP respectively, which well correspond to the HI, H2, H3 events recorded by susceptibility of core SU90-09 from middle Atlantic, indicating that the susceptibility change of marine sediments can be an important sign of climatic frequent fluctuations.