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Model-View-Controller设计模式实例研究 被引量:12
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作者 李赤林 王琳 《计算机与现代化》 2003年第3期12-14,18,共3页
从MVC的起源谈起,以一个十分简单的Java例子来说明MVC的设计方式,最后以图解的方式揭示了MVC在实际运用中所采用的具体做法。
关键词 model-view-CONTROLLER 实例 软件设计模式 面向对象 图形界面
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基于Model/View/Controller的电子商务研究 被引量:2
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作者 许文韬 顾君忠 《计算机应用研究》 CSCD 北大核心 2002年第10期19-22,共4页
分析了传统电子商务系统的缺陷 ,电子商务发展趋势 ,分析了M/V/C(Model/View/Controller)技术 ,提出了基于M/V/C电子商务并且分析了其体系结构及框架结构 ,以及在此框架之上构建电子商务的方法。
关键词 电子商务 体系结构 框架结构 INTERNET 模型 视图 控制器
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Model-View-Controller架构用于中医舌诊网络化教学 被引量:2
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作者 叶美玲 沈淑敏 +1 位作者 陈兴夏 廖福龙 《北京生物医学工程》 2007年第4期425-427,共3页
目的运用Model-View-Controller架构于因特网,设计与研发中医舌诊教学的网站。方法本因特网教学系统使用Websphere6.0服务器、DB28.1.7数据库、Java Server Faces、Structure Query Language、HTML以及JavaScript等共同开发而成。邀请8... 目的运用Model-View-Controller架构于因特网,设计与研发中医舌诊教学的网站。方法本因特网教学系统使用Websphere6.0服务器、DB28.1.7数据库、Java Server Faces、Structure Query Language、HTML以及JavaScript等共同开发而成。邀请85位大学护理学生参与测试。结果中医舌诊网站含盖八大相关部分。学习成效测试结果显示,网络教学方式可增加学生相关的专业知识。 展开更多
关键词 模式-显示-控制 舌诊 因特网
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Object-oriented Integrated Multi-view Modeling Approach in CIMS
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作者 陈加栋 熊光楞 《Tsinghua Science and Technology》 SCIE EI CAS 1996年第2期98-102,共5页
The consistency of the CIMS multi-view model is a complicated problem which plays an important role inthe CIMS life cycle. Based on the function-oriented multi-view modeling approach, an object-oriented integratedmult... The consistency of the CIMS multi-view model is a complicated problem which plays an important role inthe CIMS life cycle. Based on the function-oriented multi-view modeling approach, an object-oriented integratedmulti-view modeling approach was further provided.CIM system is composed of several objects where each objecthas a multi-view description.The four most important view-points: function, information, resource and dynamic viewpoint were chosen to provide conceptual model of the object-oriented integrated multi-view modeling in CIMS using a system integration approach 展开更多
关键词 OBJECT-ORIENTED multi-view modeling simulation PETRI-NET
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Derivation of Simplified Models of Plan View Pattern Control Function for Plate Mill 被引量:7
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作者 JIAO Zhi-jie HU Xian-lei ZHAO Zhong LIU Xiang-hua WANG Guo-dong 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2007年第4期20-23,共4页
The plan view pattern control theoretical models were simplified. Under the condition of constant volume for the plan view pattern compensation, the relation between the thickness and the length can be simplified to t... The plan view pattern control theoretical models were simplified. Under the condition of constant volume for the plan view pattern compensation, the relation between the thickness and the length can be simplified to the linearity in the segment for the plan view pattern control function. The compensation volume can be dispersed for easy calculation. By comparing the model calculation result with the actual result, it was concluded that the simplified model can be used for the online control process. 展开更多
关键词 plan view pattern control theoretical model simplified model
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Reconstructing Wireframe Model of Curvilinear Objects from Three Orth ographic Views
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作者 张爱军 诸昌钤 《Journal of Modern Transportation》 2001年第2期122-129,共8页
An approach for reconstructing wireframe models of curvilinear objects f rom three orthographic views is discussed in this paper. The method for generati ng 3D conic edges from 2D projection conic curves is emphasized... An approach for reconstructing wireframe models of curvilinear objects f rom three orthographic views is discussed in this paper. The method for generati ng 3D conic edges from 2D projection conic curves is emphasized especially, whic h is the pivotal work for reconstructing curvilinear objects from three orthogra phic views. In order to generate 3D conic edges, a five-point method is firstly utilized to obtain the algebraic representations of all 2D-projection curves i n each view, and then all algebraic forms are converted to the corresponding geo metric forms analytically. Thus the locus of a 3D conic edge can be derived from the geometric forms of the relevant conic curves in three views. Finally, the w ireframe model is created after eliminating all redundant elements generated in previous reconstruction process. The approach extends the range of objects to be reconstructed and imposes no restriction on the axis of the quadric surface. 展开更多
关键词 RECONSTRUCTION orthographic views wireframe model CONIC
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Research of Consistency Maintenance Mechanism in Real-Time Collaborative Multi-View Business Modeling
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作者 蔡鸿明 计晓峰 步丰林 《Journal of Shanghai Jiaotong university(Science)》 EI 2015年第1期86-92,共7页
Real-time collaborative editing(RTCE)can support a group of people collaboratively work from distributed locations at the same time.However,consistency maintenance is one key challenge when different types of conflict... Real-time collaborative editing(RTCE)can support a group of people collaboratively work from distributed locations at the same time.However,consistency maintenance is one key challenge when different types of conflicts happen.Therefore a common synchronous mechanism is proposed to support consistency maintenance in the process of multi-view business modeling.Based on operation analysis on different views of models in the real-time collaborative editing system,detection of potential conflicts is realized by means of a decision-making tree.Then consistency maintenance provides a comprehensive and applicable conflicts detection and resolution for collaborative business modeling.Finally,a prototype of collaborative multi-view business modeling system is introduced to verify the approach.The point is that the mechanism proposes a comprehensive solution for collaborative multi-view business modeling. 展开更多
关键词 computer support cooperative work(CSCW) multi-view business modeling consistency maintenance software engineering
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Structured scene modeling using micro stereo vision system with large field of view
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作者 颜世莹 朱玉文 +1 位作者 刘佳音 贾云得 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2001年第3期296-299,共4页
This paper presents a method for structured scene modeling using micro stereo vision system with large field of view. The proposed algorithm includes edge detection with Canny detector, line fitting with principle axi... This paper presents a method for structured scene modeling using micro stereo vision system with large field of view. The proposed algorithm includes edge detection with Canny detector, line fitting with principle axis based approach, finding corresponding lines using feature based matching method, and 3D line depth computation. 展开更多
关键词 Index terms structured scene modeling stereo vision wide field of view mobile robot
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3DV quality model based depth maps for view synthesis in FTV system
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作者 张秋闻 安平 +2 位作者 张艳 张兆杨 王元庆 《Journal of Shanghai University(English Edition)》 CAS 2011年第4期335-341,共7页
Depth maps are used for synthesis virtual view in free-viewpoint television (FTV) systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts ... Depth maps are used for synthesis virtual view in free-viewpoint television (FTV) systems. When depth maps are derived using existing depth estimation methods, the depth distortions will cause undesirable artifacts in the synthesized views. To solve this problem, a 3D video quality model base depth maps (D-3DV) for virtual view synthesis and depth map coding in the FTV applications is proposed. First, the relationships between distortions in coded depth map and rendered view are derived. Then, a precisely 3DV quality model based depth characteristics is develop for the synthesized virtual views. Finally, based on D-3DV model, a multilateral filtering is applied as a pre-processed filter to reduce rendering artifacts. The experimental results evaluated by objective and subjective methods indicate that the proposed D-3DV model can reduce bit-rate of depth coding and achieve better rendering quality. 展开更多
关键词 free-viewpoint television (FTV) 3D video quality model base depth maps (D-3DV) view synthesis
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基于J2EE/MVC Model 2的公共图书管理系统的研究 被引量:14
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作者 屈霞 刘自强 张小鸣 《计算机工程与设计》 CSCD 北大核心 2009年第20期4651-4653,4657,共4页
针对当前基于Web的各图书管理系统普遍存在的缺乏业务服务能力的问题,根据多馆共建的思想,提出了一种全新的基于J2EE/MVC Model2的公共图书馆管理系统。分析了J2EE架构,阐述了系统的MVCModel2模式软件架构。给出了4层组件的开发思路,在... 针对当前基于Web的各图书管理系统普遍存在的缺乏业务服务能力的问题,根据多馆共建的思想,提出了一种全新的基于J2EE/MVC Model2的公共图书馆管理系统。分析了J2EE架构,阐述了系统的MVCModel2模式软件架构。给出了4层组件的开发思路,在业务层强调了会话外观和利用BMP精确控制数据库的设计思想,并通过实例介绍BMP的开发过程。系统性能已达到实际使用要求,系统对于树立集成管理、大图书馆管理、创新管理理念,采取科学合理的运行机制有重要意义。 展开更多
关键词 图书管理系统 J2EE MVC model 2 会话外观 Bean管理持久性
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基于Multi-View模型的敏捷虚拟企业知识共享模式研究 被引量:2
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作者 资武成 陆小成 《制造业自动化》 北大核心 2007年第12期18-22,共5页
敏捷虚拟企业的核心在于实现全球信息经济时代的知识共享、综合利用和优化配置及合理流动,其主要特征在于所处的信息化环境和知识协同集成与共享性。敏捷虚拟企业Multi-View维度即对敏捷虚拟企业过程、功能、组织、资源、知识等系统进... 敏捷虚拟企业的核心在于实现全球信息经济时代的知识共享、综合利用和优化配置及合理流动,其主要特征在于所处的信息化环境和知识协同集成与共享性。敏捷虚拟企业Multi-View维度即对敏捷虚拟企业过程、功能、组织、资源、知识等系统进行描述,各视图之间实现知识共享与关联。基于Multi-View模型分析,敏捷虚拟企业需要构建知识共享环境与过程,并基于分布式对象技术实现敏捷虚拟企业知识共享建模。 展开更多
关键词 Multi—view模型 敏捷虚拟企业 知识共享 建模
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基于ADAMS/View的双横臂独立悬架的运动学仿真分析 被引量:5
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作者 王南 郝莉红 +1 位作者 张莉婷 张俊 《河北工业科技》 CAS 2012年第4期214-216,共3页
采用虚拟样机技术,借助于ADAMS/View软件这个操作平台,针对某轿车的双横臂独立悬架建立了多体动力学模型并对其进行运动学仿真分析,获得了前轮定位参数(前轮外倾角、前轮前束值、主销内倾角及主销后倾角)随车轮上下跳动的变化规律,为汽... 采用虚拟样机技术,借助于ADAMS/View软件这个操作平台,针对某轿车的双横臂独立悬架建立了多体动力学模型并对其进行运动学仿真分析,获得了前轮定位参数(前轮外倾角、前轮前束值、主销内倾角及主销后倾角)随车轮上下跳动的变化规律,为汽车悬架系统的优化提供了良好的理论依据。 展开更多
关键词 双横臂独立悬架 建模 仿真 ADAMS/view
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基于ADAMS/VIEW汽车前悬架的建模及仿真 被引量:1
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作者 罗卫平 姜小菁 +1 位作者 陈曼华 王珺 《金陵科技学院学报》 2011年第2期42-45,共4页
针对某轻型轿车的双横臂独立前悬架系统,在ADAMS/VIEW中建立了其虚拟模型,为反映车辆的真实行驶工况,对车轮测试平台创建了随机激励。通过仿真分析,揭示了运动特性参数在悬架运动过程中的变化规律,研究分析主销角随车轮上下跳动时的变... 针对某轻型轿车的双横臂独立前悬架系统,在ADAMS/VIEW中建立了其虚拟模型,为反映车辆的真实行驶工况,对车轮测试平台创建了随机激励。通过仿真分析,揭示了运动特性参数在悬架运动过程中的变化规律,研究分析主销角随车轮上下跳动时的变化规律,评价悬架数据合理性。本项研究为虚拟样机技术在新产品开发中的应用提供了有效方法。 展开更多
关键词 双横臂独立悬架 ADAMS/view 建模 仿真
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基于WorldView-3卫星多视角数据的三维实景建模技术研究 被引量:11
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作者 祝晓坤 《城市勘测》 2017年第5期6-11,共6页
目前亚米级立体卫星影像因其不受空域限制且重访周期短,已逐步成为航空摄影的有益补充,用于满足城市大比例尺地形图更新测绘的需要。而随着航空倾斜摄影测量技术在三维实景建模中的广泛应用,卫星影像平台的发展也让高分辨率卫星大倾角... 目前亚米级立体卫星影像因其不受空域限制且重访周期短,已逐步成为航空摄影的有益补充,用于满足城市大比例尺地形图更新测绘的需要。而随着航空倾斜摄影测量技术在三维实景建模中的广泛应用,卫星影像平台的发展也让高分辨率卫星大倾角数据进入到我们的视野,研究基于高分辨率、多视角的立体卫星影像在三维实景建模应用的原理和方法具有实际意义。本文首次定制获取了三景不同倾角的WorldView-3卫星数据,其中两景是常规小倾角0.31 m多光谱立体影像一景是大于45°的0.5 m大倾角、多光谱卫星影像。本文对其三维实景建模的工艺和关键技术包括对基于卫星影像的纹理提取和自动映射技术、不同地物的采集方法进行了探讨,并提出星载高分立体多视角影像在三维建模方面的优劣势。 展开更多
关键词 倾斜摄影测量 Worldview-3 三维实景建模 多视角 卫星影像
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全球大模型产业政策路径比较与本土应对
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作者 刘志阳 林懿辉 袁子敬 《天津大学学报(社会科学版)》 2026年第1期32-41,共10页
积极利用产业政策培育本国大模型企业是全球共识。文章基于资源基础理论构建“资源禀赋—能力建构一制度配置”三维框架,系统比较中美欧三方在大语言模型产业政策中的差异。研究发现,美国依托市场与技术资源形成“市场驱动—能力扩散”... 积极利用产业政策培育本国大模型企业是全球共识。文章基于资源基础理论构建“资源禀赋—能力建构一制度配置”三维框架,系统比较中美欧三方在大语言模型产业政策中的差异。研究发现,美国依托市场与技术资源形成“市场驱动—能力扩散”路径;欧盟以制度规范塑造“规制嵌入—能力协同”路径;中国则通过国家动员形成“制度驱动—能力生成”路径。针对中国大模型产业面临的资源碎片化、能力转化率偏低与执行刚性等挑战,文章提出资源统筹、能力孵化与制度耦合3项优化机制,为构建具有持续竞争力的大模型产业提供政策建议。 展开更多
关键词 大语言模型 产业政策 资源基础理论 人工智能治理 国家竞争
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Modelica动态组件建模与仿真 被引量:3
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作者 温劲 龚雄 《计算机应用与软件》 CSCD 北大核心 2012年第9期199-202,共4页
Modelica模型中,组件视图表达了模型的内部组成及组件之间的关系,是Modelica模型不可或缺的重要部分。介绍组件视图的内容与Modelica表达,并提出一种在组件视图进行动态仿真的方法,通过水箱的建模与仿真过程,直观地演示模型中状态变量... Modelica模型中,组件视图表达了模型的内部组成及组件之间的关系,是Modelica模型不可或缺的重要部分。介绍组件视图的内容与Modelica表达,并提出一种在组件视图进行动态仿真的方法,通过水箱的建模与仿真过程,直观地演示模型中状态变量在仿真过程中的动态变化,并在MWorks平台中实现动态组件库中定义的图形动态属性annotation字段和常用动态组件,展示准确的组件视图动态仿真效果。 展开更多
关键词 多领域建模 组件视图 动画
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DATA CONTEXT MODEL IN THE PRO-CESS INTEGRATION FRAMEWORK 被引量:2
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作者 ZHAO Bo YAN Yan +1 位作者 NING Ruxin LI Shiyun 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2008年第2期104-107,共4页
Process integration is the important aspect of product development process. The recent researches focus on project management, workflow management and process modeling. Based on the analysis of the process, product de... Process integration is the important aspect of product development process. The recent researches focus on project management, workflow management and process modeling. Based on the analysis of the process, product development process is divided into three levels according to different grains from macroscopy to microcosm. Our research concentrate on the workflow and the free-grained design process. According to the need of representing the data and the relationships among them for process integration, context model is introduced, and its characters are analyzed. The tree-like structure of inheritance among context model's classes is illustrated; The relationships of reference among them are also explained. Then, extensible markup language (XML) file is used to depict these classes. A four-tier framework of process integration has been established, in which model-view-controller pattern is designed to realize the separation between context model and its various views. The integration of applications is applied by the encapsulation of enterprise's business logic as distributed services. The prototype system for the design of air filter is applied in an institute. 展开更多
关键词 Context model Process integration Extensible markup language(XML) model-view-controller(MVC) Service
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Calculation of Taper Rolling Time in Plan View Pattern Control Process 被引量:3
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作者 JIAO Zhi-jie HU Xian-lei ZHAO Zhong LIU Xiang-hua WANG Guo-dong 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2006年第5期1-3,共3页
The forward slip model with adhesion was used to derive the formula of calculating taper rolling time. The relation between the rolling time and the taper length and the relation between the rolling time and the taper... The forward slip model with adhesion was used to derive the formula of calculating taper rolling time. The relation between the rolling time and the taper length and the relation between the rolling time and the taper thickness can be obtained. The numerical solution for this formula was used on site. According to the simulation result, the roll gap value should be changed linearly with rolling time. 展开更多
关键词 plan view pattern control forward slip model TAPER time calculation
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基于扩散模型与神经辐射场的单视图动物3D重建方法
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作者 宋俊锋 翟源昊 +2 位作者 王国相 叶振 江丽荣 《无线电通信技术》 北大核心 2025年第3期610-616,共7页
基于扩散生成模型,利用单张图像生成动物3D模型,存在纹理不一致、细节不足等问题,提出一种基于扩散模型与神经辐射场(Neural Radiation Field,NeRF)的单视图动物3D重建方法。通过引入相机参数条件微调扩散模型,生成多视角一致的高分辨... 基于扩散生成模型,利用单张图像生成动物3D模型,存在纹理不一致、细节不足等问题,提出一种基于扩散模型与神经辐射场(Neural Radiation Field,NeRF)的单视图动物3D重建方法。通过引入相机参数条件微调扩散模型,生成多视角一致的高分辨率图像;结合个性化的低秩调整(Low-Rank Adaptation,LoRA)模块优化NeRF权重,显著提升纹理细节捕捉能力;利用反馈优化机制,进一步增强几何和纹理表现的全局一致性。实验结果表明,与现有方法相比,所提方法在复杂纹理和几何边界处理方面表现卓越,能够显著提升动物3D模型的纹理质量与视觉效果。 展开更多
关键词 单视图 扩散模型 低秩调整 神经辐射场 纹理增强
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Width Compensation and Correction for the Plan View Pattern Control Function on Plate Mill 被引量:5
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作者 Zhi-Jie Jiao Chun-Yu He +1 位作者 Zhong Zhao Jing-Guo Ding 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2013年第5期31-35,共5页
Research works on width compensation and correction were carried out in order to eliminate the effects of the PVPC ( plan view pattern control) on width accuracy of plate mill. The thickness correction calculation f... Research works on width compensation and correction were carried out in order to eliminate the effects of the PVPC ( plan view pattern control) on width accuracy of plate mill. The thickness correction calculation formula was derived for compensation the width deviation caused by PVPC function, and the formula is unified under the thinning and thickening conditions. In order to improve the width calculation accuracy, width spread calculation process was modified with dividing one large reduction pass to several small reduction calculation steps. The thickness wedge was simplified to rectangle based on the volume constant principle, and the width spread model for PVPC was constructed. The width compensation and correction for the PVPC functions are used for the online control process, and the Product dimension accuracy is improved. With the decrease of Crop losses, the Droduct yield was increased with 0. 2%. 展开更多
关键词 Lplate mill plan view pattern control width correction and compensation width spread model
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