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1.
个性化协同学习环境本体的研究   总被引:6,自引:0,他引:6  
针对计算机技术的协同学习(CSCL)与个体学习存在的问题,提出了个性协同学习环境(ICLE)的概念,建立了面向ICLE实体的静态体以及面向实体行为的动态本体,基于该本体实现的ICLE不仅具有正互依赖性,群体异构性以及多模式,多粒度的交互等特点,而且应用之间还具有语义互操作性与模块可重用性,ICLE应用实现了分布环境中学生之间的协同学习以及个体学生的个性化学习。  相似文献   

2.
复杂设备运行的协同服务支持   总被引:5,自引:0,他引:5  
针对现有的设备服务模式存在的问题,提出支持复杂设备优化运行的协同服务模式.为了使复杂设备能充分发挥其潜在价值,指出复杂设备的运行应该与必需的技术服务关联起来,形成“产品服务捆绑体”.解释了支持复杂设备运行的协同服务内涵,并对组织结构形式、协同服务业务模式识别和过程建模关键技术进行系统论述,提出了建立嵌入式在线服务标准(embeddedo nline service,EOS)作为支持协同服务运行的设备接入技术.  相似文献   

3.
目前对在研项目过程管理模式多是以时间、成本和目标完成质量为主,直接针对临床问题解决的管理模式比较少见。以样本数据为研究基础,提出基于四要素影响科研管理水平,即Enviroment(环境)、Basement(基地)、Talent(人才)和Project(项目)。通过监控、预测及扶持等一系列手段对其进行干预,实验结果表明,运用好这一系列手段对提高我们自身的临床科研水平具有一定的科学意义。  相似文献   

4.
针对大型复杂导弹武器装备协同操作在同一时空下的特殊情况,开展局域网这个特定虚拟操作环境下的多机(计算机)协同操作研究。通过Unity3D/network技术进行局域网环境的构建,在network模块内置封装好的组件算法之上,通过加入计数器和控制脚本调用实现算法的优化,进而减少多机协同过程中从服务器到客户端的网络延迟。结果证明:基于优化算法基础的多机协同网络延迟较network模块内置封装好的算法表现更好,完全可以满足特定虚拟操作环境下的多机协同操作。  相似文献   

5.
基于现代集成制造的理念、方法、技术、工具,结合实践,提出并研究了一种能改善复杂产品研发时间(T)、质量(Q)、成本(C)、服务(S)的系统工程——称为“复杂系统(产品)集成制造工程”(简称COSIME)。阐述了它的内涵、系统框架和技术体系,并给出了其中具有特点的6类关键技术的阶段研究成果,包括基于人制管理及有关先进制造模式的复杂产品集成制造系统的经营管理模式;基于项目管理理念的异地企业间并行工程方法与技术;复杂产品虚拟样机工程方法与技术;基于分布仿真技术的复杂产品概念设计与性能评估系统;复杂产品质量控制与  相似文献   

6.
《应用科技》2009,36(4):76-76
主要技术、性能:1)研建了适用于热带雨林地区特定环境条件(如高温、多云雨、植被覆盖大、覆盖类型复杂等)下的以航空为特色的遥感技术体系和技术方法;2)自主开发了适于热带雨林地区以城市土地利用变化、  相似文献   

7.
基于Domino/Notes R5高校院系信息管理系统   总被引:3,自引:0,他引:3  
论述Lotus Notes作为首选办公平台的技术优势探讨Lotus Domino/Notes所提供的工作流主标准的Web服务、应用和开发环境,及其它通信、协作和协调等3大主要特点。以“班级信息管理系统”为开发实例,分析了主要功能模块的构成及其技术特色,并探讨了基于Lotus Notes技术平台、B/S(浏览器/服务器)模式的“高校院系办公自动化管理系统”的解决方案。  相似文献   

8.
《科学管理研究》2016,(5):107-110
国际大科学的发展促进了世界各国之间的科学合作研发,整合各国研发优势和先进技术,共同研发与探索,但鉴于各国存在地域、文化、社会等方面的差异,在合作研发过程中,不可避免的存在各种问题。基于国际大科学研发协同的背景,探讨参与大科学项目中各国存在的文化冲突问题以及合作过程中采取的合作模式,深入研究国际合作中的文化冲突,提出国际大科学背景下研发协同中,消除文化冲突,创新合作模式的对策建议。  相似文献   

9.
培养大学本科生的科研创新能力是当代高等教育的重要使命。通过构建课改教改协同、师生间科研协同、学生间科研协同、学生社团间科研协同、校内外科研协同以及三文(课程论文、学年论文与毕业论文)与科研能力培养协同等"多元协同"机制,切实加强本科生科研能力的培养模式与实践经验。  相似文献   

10.
 大数据科学和系统的基础研究推动了大数据数学理论的产生。本文引出大数据科学和工程的一种严格分析方法:大数据代数(BDA)从提取各种大数据系统的共同模式中形式地导出大数据科学的数学模型。BDA揭示了任何大数据系统是一种超越传统纯数字的新型递归类型化超结构(RTHS)。基于大数据的递归超结构,创建了一组严格的代数算子,用于对大数据系统的建模、分析、综合和认知学习。这一基础研究建立了一个大数据科学的理论架构,其为解释大数据的原理和性质及其在大数据工程中的形式推理提供了一个方法论基础。  相似文献   

11.
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.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
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.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

15.
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。  相似文献   

16.
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.  相似文献   

17.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

18.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

19.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

20.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

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