26 resultados para object-oriented language
em Chinese Academy of Sciences Institutional Repositories Grid Portal
Resumo:
Crosshole Seismic tomography has been broadly studied and applied in the fields of resource exploration and engineering exploration because of its special observing manner and better resolution than normal seismic exploration. This thesis will state the theory and method of Crosshole Seismic tomography. Basing on the previous studies,the thesis studied the initial velocity model,ray-tracing method, and developed the three-dimension tomography software. All the cells that a ray passes through are of the same velocities if the paths from transmitters to receivers are straight. The cells that the each ray passes through are recorded, and rays that pass through each cell are calculated. The ray average velocity which passes through a cell is set as the cell velocity. Analogously we can make a initial node velocity model because the velocity sum is calculated on the all cells which own to a certain node, and the cell number is summed about each nodes,the ratio of the velocity sum to the all cells number is set as the node velocity. The inversion result from the initial node velocity model is better than that of the average velocity model. Ray-bending and Shortest Path for Rays (SPR) have shortcomings and limitations respectively. Using crooked rays obtained from SPR rather than straight lines as the starting point can not only avoid ray bending converging to the local minimum travel time path, but also settle the no smooth ray problem obtained by SPR. The hybrid method costs much computation time, which is roughly equal to the time that SPR expends. The Delphi development tool based on the Object Pascal language standard has an advantage of object-oriented. TDTOM (Three Dimensions Tomography) was developed by using Delphi from the DOS version. Improvement on the part of inversion was made, which bring faster convergence velocity. TDTOM can be used to do velocity tomography from the first arrival travel time of the seismic wave, and it has the good qualities of friendly user interface and convenient operation. TDTOM is used to reconstruct the velocity image for a set of crosshole data from Karamay Oil Field. The geological explanation is then given by comparing the inversion effects of different ray-tracing methods. High velocity zones mean the cover of oil reservoir, and low velocity zones correspond to the reservoir or the steam flooding layer.
Resumo:
This thesis mainly studies the technologies of 3-D seismic visualization and Graphic User Interface of seismic processing software. By studying Computer Graphics and 3-D geological modeling, the author designs and implements the visualization module of seismic data processing software using OpenGL and Motif. Setting seismic visualization flow as the subject, NURBS surface approximation and Delaunay Triangulation as the two different methods, the thesis discusses the key algorithms and technologies of seismic visualization and attempts to apply Octree Space Partitioning and Mip Mapping to enhance system performance. According to the research mentioned above, in view of portability and scalability, the author adopts Object-oriented Analysis and Object-oriented Design, uses standard C++ as programming language, OpenGL as 3-D graphics library and Motif as GUI developing tool to implement the seismic visualization framework on SGI Irix platform. This thesis also studies the solution of fluid equations in porous media. 2-D alternating direction implicit procedure has been turned into 3-D successive over relaxation iteration, which possesses such virtues as faster computing speed, faster convergence rate, better adaptability to heterogeneous media and less memory demanding.
Resumo:
随着软件技术的发展,越来越多的应用系统采用组件技术来提高系统开发效率。企业级应用通常通过集成多种组件形成复杂软件,完成业务功能。各种组件之间存在直接或者间接的依赖关系以及配置限制,使得当前以手工为主的组件部署效率低下且容易出错。 针对分布式组件系统部署面临的问题,论文建立了一种基于约束规则的统一部署框架,支持各种组件的统一一致的自动化部署。论文首先分析总结了组件部署现状,设计了一种统一部署描述模型,刻画不同组件的部署需求,包括部署单元、部署目标、以及约束规则,为部署计划正确性验证以及自动部署提供基础。针对组件部署中缺乏提前验证的问题,论文还设计了一套基于约束规则的验证机制。通过总结当前多种组件平台中领域相关的约束规则,对约束规则进行分类,并使用声明式对象约束语言(Object Constraint Language)刻画约束规则。为不同类型约束设计了验证算法,并且设计了包含约束规则验证活动的组件部署流程。最后论文给出了网驰平台统一部署系统OnceUD的设计与实现,将前述研究成果引入其中,并通过应用案例评估了系统的功能。
Resumo:
Migrating legacy system with web service is an effective and economic way of reusing legacy software in a SOA environment.In this paper,we present an approach for migrating a three-tie object-oriented legacy system to SOA environment.The key issue of the approach is about services identification from large numbers of classes.And we propose a bottom-up method to model the system with UML and identify services from UML then.This approach can be a reference to an auto-migrating process.
Resumo:
目的: 肿瘤是当今人类生活中最危险的疾病之一。重离子和质子的Bragg峰,能使高吸收剂量区集中于肿瘤部位,从而有效地保护周围的健康组织,且在肿瘤照射区具有相对生物学效应高、修复效率低等特点,在放疗上比较理想。但是现有的离子束治疗模式仍是面向物理学对象的——即仅仅考虑离子的物理学特性和肿瘤的大小、形状等,很少从生物的有机整体考虑。本文依据生物学个体差异,进行了面向生物学对象的离子治疗模式必要性和可行性的基础研究。研究方法与结果: 1、不同剂量的重离子辐照肝癌SMMC-7721细胞后出现了细胞周期阻滞,细胞在低剂量区表现出明显的HRS/IRR 响应。 2、不同剂量重离子和X射线分别辐照小鼠全身后,其骨髓细胞周期表现出不同的分布,且等剂量重离子较X射线辐照对动物的影响更明显。 3、头部是一个重要的器官。重离子辐照小鼠头部后,小鼠骨髓、脾脏和外周淋巴细胞周期分布出现明显变化,这表明动物个体本身是一个有机统一整体,重离子辐照对动物非辐照部位具有直接的和间接的影响。 4、7.5c Gy重离子辐照正常小鼠后荷瘤,不仅没有能够抑制反而促进了肿瘤的生长,并且小鼠胸腺、脾脏、骨髓和外周淋巴细胞周期分布发生变化。另外发现雄性比雌性小鼠对低剂量重离子辐射更敏感。 5、以不同剂量重离子辐照荷瘤小鼠(S180肉瘤或H22肝癌)的实验中,随着剂量的增加,肿瘤细胞周期阻滞现象逐渐明显,同时出现免疫系统细胞周期的阻滞。这表明重离子辐照在杀死或引起肿瘤细胞凋亡的同时,在一定程度上也引起了正常组织和免疫系统的损伤。结论: 本研究通过一系列的细胞、动物学实验证明了面向生物学对象的离子治疗模式是可行的和必要的,这种模式将使离子治疗能够根据患者的个体差异,采取适合不同个体的最佳治疗方案,将可能极大的提高治愈率和患者的生存质量,是一种以人为本的治疗模式,有着很好的应用前景
Resumo:
较早时期的实时监控应用软件,从分析设计到代码实现,采用的都是结构化方法,有的甚至没有经过分析设计阶段,直接进行编程。也曾有过分析和设计阶段采用结构化方法,编程实现采用面向对象语言的尝试。但由于分析设计的缺陷导致在软件生命周期的维护阶段出现许多问题,如存在较多的缺陷(bug)、结构性错误、修改困难、功能扩展工作量太大等等。统一建模语言(UML)的出现是面向对象建模领域的一个里程碑,它将面向对象方法和以往的面向过程的结构化方法做了较为完善的结合,使在分析、设计、实现阶段都采用面向对象方法完成实时系统成为可能。这次在开发新系统的过程中首次尝试了采用面向对象分析设计语言(UML)和面向对象语言(MS VC++)相结合,在整个软件生命周期均采用面向对象方法和工具实现工业远程实时监控系统,在解决以上问题及优化系统性能、结构方面皆取得了很好的效果。得到了结构良好、高内聚、低藕合、容易理解、易于扩展、维护的系统。这个系统主要实现工业现场仪表的调控,数据的采集、直观图实时监控生产状况,利用电话网及计算机技术自动实现输油管线远程实时监控、统计与处理等功能。
Resumo:
973 Project of China [2006CB701305]; "863" Project of China [2009AA12Z148]; National Natural Science Foundation of China [40971224]
Resumo:
数字化工厂是目前先进制造技术研究的热点。进行内嵌在生产线数字化制造环境中的离散制造过程仿真研究,建立了面向对象的系统模型,分析了仿真运行机理;同时基于eM-Plant软件开发离散制造过程仿真系统,通过具体的生产线实例说明系统的开发与运行机理,提供数字化生产线离散制造过程仿真研究的有效手段。
Resumo:
针对机器人生产线数字化仿真设计、验证环境 ,讨论了工业机器人及生产线仿真研究现状及存在问题 ,提出机器人虚拟样机设计思想 ,构成机器人生产线连续制造过程仿真的重要组成部分。同时分析生产线仿真中针对离散制造事件的处理方法 ,应用面向对象技术进行生产线离散制造过程建模 ,成为进行生产线仿真的有效研究手段