JavaBean在访问数据库中的应用

讨论了如何采用JavaBean技术封装对数据库的连接、查询以及更新等操作。介绍JSP(Java Server Pages)技术的工作原理和特性以及在JSP中调用JavaBean的方法,结合“在线考试系统”软件的实现,论述了JavaBean技术在应用程序频繁的访问数据库中的应用。     

J2EE技术在构建远程教学系统中的应用研究

本文从分析J2EE的技术特征出发,综合运用JSP Servlet,EJB组件JavaBean,JDBC等Java相关技术建立远程教学系统,并且分析了利用J2EE技术实现远程教学系统的技术优点。     

基于JSP的教务管理系统设计

分析了教务管理系统的设计目标和方法,详细介绍了利用JSP访问SQL Server数据库的方法和技巧,并对开发过程中运用JSP＋JavaBean＋Servlet实现网络教务管理的关键技术进行了探讨,对于程序员方便快捷地编写跨平台的高水平网页程序有一定的参考价值。     

JSP与WEB数据库的连接技术

介绍了JSP，JDBC技术，分析JSP通过JavaBean和JDBC动态访问Web数据库的方法、模型和关键技术，并给出了利用JavaBean和JDBC技术实现SQLServer数据库WEB访问的实例。     

JSP网站技术在PORTNET项目中的应用

JSP技术是基于Java Servlet以及整个Java体系的Web开发技术,利用这一技术可以建立安全、跨平台的先进动态网站.JSP网站开发模式二在PORTNET项目的开发应用中具有优越性.     

基于Java技术的Web环境下LaTeX的应用

介绍了利用JavaBean实现基于Java技术的、Web环境下的LaTeX应用。将LaTeX功能与JSP开发技术相结合,运用Java调用其他外部程序,实现了多线程机制控制的Web实时交互。阐述了其工作原理,并以实际应用的例子说明其中用到的关键技术。     

基于Java的Web邮件系统的设计与实现

在介绍Web邮件系统协议,Java Mail API的结构框架和核心类的基础上,设计了一个Java Web邮件系统.该系统利用Java mail API结合JSP编程实现,具有跨平台和灵活性的特点,同时,Java语言的垃圾回收机制,既防止了内存泄漏,又提高了服务器的性能.     

基于MVC模式的Java Web应用设计

简要介绍了MVC的设计模式,讨论了JSP,Servlet和JavaBean技术的概念,同时对基于MVC设计模式如何利用Java的多种技术开发Web应用进行了研究。最后给出一个Web应用系统身份认证的设计和开发的实例。     

甘肃公共公务图书馆网模型研究

基于Web技术的图书馆公共公务网模型研究,采用Java技术和JavaBean技术设计整个系统的核心模块;采用JDBC技术实现与数据库的连接;利用Java2平台以JSP和HTML为基础进行技术方案实现。建立了多平台的Web技术下“图书馆公共业务网”网站,实现了在Internet环境下图书馆的采访、编目、流通、检索、读者管理、用户管理等业务管理功能,突破了以往图书馆集成管理系统仅为某一图书馆专用的传统模式,建立了多馆网络化分布式管理的图书馆管理系统新模型。     

轻量级J2EE应用中MVC模式的设计与实现

简要介绍了MVC的设计模式,讨论了J2EE技术架构中3种基本的组件技术JSP、Servlet和JavaBean的概念,阐述了基于JSP+Servlet+JavaBean的轻量级J2EE应用中MVC开发模式的思想.本文运用该模式开发了某高校系部信息管理Web应用平台,通过一子模块实例展示了MVC模式的实现方法.实践证明,这种方式能够简化应用系统的开发,提高系统可维护性.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

正~~     

Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to