机电创意实验的探索与实践

利用德国慧鱼公司的大型工业模型作为开发机电创意实验的教具,使学生了解了机电设备和自动化生产线的基本组成与工作原理,了解了有关光电传感器技术及机电设备及生产流水线的控制方式,大大提高了学生的工程实践能力、综合设计能力和创新能力。     

应用慧鱼模型实现创新性开放实验的模式探索

利用慧鱼创意组合模型进行开放性实验,对于培养大学生的创新设计能力和动手能力是一条有效的途径。本文介绍了利用慧鱼模型实现开放性实验的设置模式和实验室仪器的高效管理模式,为探索教育改革的新方法拓宽了方向。     

慧鱼创意组合模型在个性化教育中的应用

根据本科生个性化教育的目标,结合机械设计制造及自动化教学实际情况,在机械专业本科生中使用慧鱼创意组合模型进行个性化教育的实践,使用引进的慧鱼创意组合模型实现了模型学习、模型改进和创意模型三个阶段,使学生提高了创新意识和水平,提高了动手能力,初步具备了机电一体化产品的设计开发能力。总结了使用慧鱼创意组合模型的成果,指出了培养过程中存在的问题,并给出了相应的对策。     

一种新的DSS中模型复合方法研究

复合模型是一种解决复杂决策问题的有效方法.首先讨论了决策支持系统(DSS)中复合模型的三种基本形式,然后提出了一种新的模型复合方法即在模型分类驱动技术产生模型链的基础上,利用黑板结构参数匹配算法实现复合模型的求解,并详细分析了求解过程和求解算法.实践表明:该方法最大优点是可操作性强,而且支持决策问题求解的智能化程度比较高.     

慧鱼实验系统的二次开发

慧鱼组合模型能够模拟各种机械运动及机械设备的自动控制,是很好的机电一体化的实例.本文介绍了通过对慧鱼组合模型进行二次开发,使其控制系统的编程从采用图形模块编程转换到采用编程语言编程的意义及实现方法.     

初中动物学黑版教学插图的运用

在生物学教学中,常使用活生物、实物标本、模型、挂图、卡片、切片、幻灯、立体镜、电影、电视以及黑板画等教学手段进行直观教学,当学生人数较多,使用实物不便或模型太小,又缺乏某些必要的教具时,教师就应当使用黑板插图去辅助直观。黑板插图有时还     

基于多智能体技术的复杂零件数控编程系统研究

根据复杂零件数控编程的分布式智能决策的设计需要,建立了一种基于多智能体技术的复杂零件数控编程系统模型.该模型开发了多个Agent系统,使用一个管理智能体通过黑板机制使每一个智能体能够与黑板通信,智能体之间在黑板上进行信息分享与协作.研究表明,应用多智能体技术设计的复杂零件数控编程管理系统能降低数控编程的复杂性和提高数控编程的效率.     

开设实验机器人设计训练的探索与实践

实验教学是培养学生创新能力的重要途径,针对机电一体化专业的学生,开设了<实验机器人设计>课程,利用慧鱼模型尝试了新的教学方法,使学生的设计思想以物化的形式表现出来,取得了较为理想的教学效果.     

基于慧鱼组件的新型立体车库模型设计

设计了一种适用于城市小区的新型立体车库。首先总结了国内外在该领域的发展现状,分析现有装置的设计思路及其优缺点,形成了设计思想,并且明确了设计目标;然后进行了库存装置的总体设计,运用Visio和SolidWorks三维建模工具,绘制了装置的图纸及概念模型。为检验库存装置设计的可行性,选择了慧鱼组件搭建装置模型;模型分为传动模块、存放模块、机械臂模块三大部分,通过相互之间的配合,并辅以测控系统完成装置的设计目标;最后,对装置模型进行了测试,记录并解决了在测试时遇到的问题。     

与慧鱼组合模型相结合的“机械原理”教学改革

针对目前机械原理教学中存在的不足,提出了与慧鱼产品相融合的"机械原理"教学改革。通过慧鱼作品的展示及组织实物作品制作主题活动,表明实施该教学改革后,学生的机械原理知识和机械创新设计能力都得到了较大的提高。     

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.     

A computer generator for randomly layered structures

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

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。     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with     

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     

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

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An on-line scaling method for improving scalability of a database cluster

The explosive growth of the Internet and database applications has driven database to be more scalable and available, and able to support on-line scaling without interrupting service. To support more client's queries without downtime and degrading the response time, more nodes have to be scaled up while the database is running. This paper presents the overview of scalable and available database that satisfies the above characteristics. And we propose a novel on-line scaling method. Our method improves the existing on-line scaling method for fast response time and higher throughputs. Our proposed method reduces unnecessary network use, i.e. , we decrease the number of data copy by reusing the backup data. Also, our on-line scaling operation can be processed parallel by selecting adequate nodes as new node. Our performance study shows that our method results in significant reduction in data copy time.     

An improved R-tree based on childnode''s probability

R-Tree is a good structure for spatial searching. But in this indexing structure,either the sequence of nodes in the same level or sequence of traveling these nodes when queries are made is random. Since the possibility that the object appears in different MBR which have the same parents node is different, if we make the subnode who has the most possibility be traveled first, the time cost will be decreased in most of the cases. In some case, the possibility of a point belong to a rectangle will shows direct proportion with the size of the rectangle. But this conclusion is based on an assumption that the objects are symmetrically distributing in the area and this assumption is not always coming into existence. Now we found a more direct parameter to scale the possibility and made a little change on the structure of R-tree, to increase the possibility of founding the satisfying answer in the front sub trees. We names this structure probability based arranged R-tree (PBAR-tree).     

Integrating GIS Web services based on mediating architecture

The geographic information service is enabled by the advancements in general Web service technology and the focused efforts of the OGC in defining XML-based Web GIS service. Based on these models, this paper addresses the issue of services chaining,the process of combining or pipelining results from several interoperable GIS Web Services to create a customized solution. This paper presents a mediated chaining architecture in which a specific service takes responsibility for performing the process that describes a service chain. We designed the Spatial Information Process Language (SIPL) for dynamic modeling and describing the service chain, also a prototype of the Spatial Information Process Execution Engine (SIPEE) is implemented for executing processes written in SIPL. Discussion of measures to improve the functionality and performance of such system will be included.     

Tracking data management using topology of moving object database system for moving object constrained trajectory in LBS application

Advances in wireless technologies and positioning technologies and spread of wireless devices, an interest in LBS (Location Based Service) is arising. To provide location based service, tracking data should have been stored in moving object database management system (called MODBMS) with proper policies and managed efficiently. So the methods which acquire the location information at regular time intervals then, store and manage have been studied. In this paper, we suggest tracking data management techniques using topology that is corresponding to the moving path of moving object. In our techniques, we update the MODBMS when moving object arrived at a street intersection or a curved road which is represented as the node in topology and predict the location at past and future with attribute of topology and linear function. In this technique, location data that are corresponding to the node in topology are stored, thus reduce the number of update and amount of data. Also in case predicting the location,because topology are used as well as existing location information, accuracy for prediction is increased than applying linear function or spline function.