基于双线性正交分解法的换热器系统数据协调

数据协调是基于过程模型对过程测量数据进行校正,得到满足过程模型约束的更为可靠和一致的过程数据。针对实际换热器网络过程变量众多的问题,该文基于换热器装置特点,实现了物料约束模型和能量约束模型的自动建立。基于双线性正交分解法进行了数据分类,并对换热器温度和流量变量进行数据协调,得到了已测冗余变量的数据协调值,以及可估计未测变量的估计值。     

产 |品 |设 |计 |过 |程 |管 |理 |模 |型

协同产品设计开发环境是多变的,为了对产品设计开发过程实行管理,并以设计过程为线索将各种资源动态组织起来,实现设计过程的优化,分析了现代产品设计过程的特征,给出了实现过程管理模型的要求,提出了多视图过程管理模型。研究结果表明,该模型描述了相关元素和信息流之间的约束关系,可支持产品开发的功能、行为、组织以及信息视图。     

并行工程项目协调系统

为确保并行产品开发过程的顺利进行，协调产品开发工作流程，协调产品开发部门之间的关系、产品部件之间的关系以及协调开发人员解决矛盾的过程，提出了并行工程项目协调系统的概念。分析了协调工作应完成的任务，定义了项目协调系统的功能组成、体系结构和子系统间的集成机制。介绍了一种并行工程项目协调系统。     

基于网络的协同设计方法研究

实现基于网络的协同产品开发是当前计算机协同工作的一个重要方向。论文提出协同的产品开发模式是分阶段的产品信息共享和协同决策过程。支持协同设计的基本使能技术包括 :产品数据共享 ;跨异构平台的数据互操作与信息资源的动态调配技术 ;多用户决策的协调与优化技术。提出了基于网络的协同产品开发实现过程 :建立分阶段的产品信息模型 ;在网上提供封装的产品模块 ;远程访问和调用 ;共享协同设计过程 ;产品的整体优化和协同决策。利用CORBA和 Java技术支持产品数据共享和协同优化的实现。     

网络化产品快速开发过程的建模方法

针对分布环境下的产品开发过程涉及范围的广泛性、环境的复杂性、信息的多样性,提出了网络化快速产品开发的异/同步耦合三维过程模型.该模型实现了单个个体的活动与产品开发过程中的协作活动形式上的分离以及通过过程语义网络的内部结合.在此基础上,构建了支持产品开发模型的网络化实现平台,支持分布制造信息环境下新产品开发过程和特殊技术服务过程.     

支持并行协同产品开发的广义鲁棒设计方法

研究了并行协同产品开发过程中的广义鲁棒设计方法.首先,针对并行协同产品开发过程中的不确定性,给出了广义鲁棒设计框架;然后,提出了广义鲁棒性概念,分析了性能鲁棒性和约束鲁棒性;最后,在传统优化设计模型的基础上,考虑产品参数的变化对性能的影响,修改传统优化设计模型的优化目标和约束条件,使它们包含广义鲁棒性指标,建立了广义鲁棒设计模型,并基于遗传算法对模型求解.该方法能有效提高并行协同设计的广义鲁棒性,用一个转向架设计实例验证了其有效性.     

用户平衡分配条件下交通控制优化研究

基于信号配时和路径选择之间的相互作用机制,提出了一种区域协调多相位定时控制优化的双层规划模型.模型下层用具有路段容量约束的用户平衡描述拥挤网络条件下的路径选择,并引入了节点流向阻抗,上层为区域协调多相位定时控制优化模型,以总行驶时间和停车次数构成的网络性能指标作为信号优化的目标.采用乘子法求解带有路段容量约束的用户平衡问题,用灵敏度分析算法求解该双层规划问题.     

面向开发链的产品智能化配置技术

介绍了基于产品配置的开发链产品实现过程,分析了产品开发链对产品模型的要求,研究了面向配置过程的产品结构模型,给出了产品配置的一般过程,配置方案的一致性和有效性通过配置知识库的正确性来保证,提出了基于测试方案的配置知识库诊断模型,通过测试配置方案集来诊断知识库中多余的约束规则及应增加的规则.     

全生命周期产品信息模型

产品建模技术是先进制造技术的基础技术，产品模型是实现产品开发过程中各种活动信息共离垢关键，建立完整，精确，高度一致的产品模型具有重要的意义。在分析比较了面向几何的产品模型，面向特征的产品模型和集成产品模型的基础上，提出了全生命周期产品模型的概念，并分析了其特点，组成，层次结构及建模过程，在该产品模型指导下的工作，可以保证产品数据信息在产品数据形成过程中传输和继承的一致性，为产品开发提供了一个参考模型。     

基于作业成本法的产品开发成本估算模型研究

为实现产品开发成本估算,构建了基于作业成本法产品开发成本的估算模型.分析了作业成本法在成本估算中的应用原理,并对产品开发过程进行递阶分解,通过对其原子过程输入成本与消耗作业动因的估算实现产品开发的成本估算.最后通过实例验证了该模型.     

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.     

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)

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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     

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