面向中小型企业的制造服务平台研究

提出和研究了一种面向中小型企业制造服务ASP平台的体系结构,在该平台上集成了一系列包括制造资源服务能力描述、制造资源服务过程配置、制造资源服务能力评价和基于合同的项目管理模式等在内的应用服务,用户可通过租用应用服务的方式在平台中处理自己的事务.针对客户的制造需求,按不同层次选择出能满足其需求的最优供应商/制造商,并在基于电子合同的项目管理模式下对该项目进行跟踪管理,直至项目完成.最后,通过在平台中进行轴加工的各项业务(如制造任务提交、电子合同谈判与签订、制造物流状态报告等)对原型系统进行实例分析,表明该系统可为中小型企业充分利用自身资源、增强快速响应市场能力提供新的途径.     

面向ASP平台的网络化制造资源应用服务研究

ASP网络化制造平台通过对相关企业提供应用服务，实现企业间的资源整合，促进优势互补，从而促进企业的竞争力和市场相应能力。研究并提出了基于ASP平台的网络化制造资源管理系统，通过对网络化制造资源管理的需求进行深入分析后，对制造资源进行分类，并提供制造资源的信息共享、使用及管理等应用服务，为企业间协作提供一个公共平台。     

基于网络化制造ASP平台项目协同管理系统的关键技术

根据网络化制造应用服务提供商(ASP)平台的特点,给出了基于ASP平台的项目协同管理系统的体系结构模型,提出了基于ASP平台的项目协同机制、项目协同决策及基于ASP平台的项目计划与控制等关键技术.     

成套电器钣金加工车间设计制造集成运行支持系统

针对多品种小批量甚至单件客户化定制生产模式下,成套电器制造企业钣金规格品种繁多、设计资料数据量大、生产加工任务重等特点以及对设计制造集成优化运行的需求,提出了一种支持钣金件从三维CAD、二维展开、工艺设计、优化排料、数控编程到数控加工整个设计制造过程信息共享与业务协同的集成运行模式,并基于面向服务架构(service-oriented architecture,SOA)建立了该模式运行支持系统的集成框架、功能结构和运行流程。最后,将该系统在重庆某成套电器制造企业进行了实际应用,取得了良好应用效果。     

基于ASP的珠三角中小企业网络化制造模式研究

针对珠三角中小企业信息化所面临的问题,对珠三角中小企业网络化制造模式进行了探讨．简单介绍了网络化制造与应用服务提供商（ASP）的概念,在对珠三角中小企业的特点进行分析的基础上,提出了一个基于ASP的珠三角中小企业网络化制造模式;并对模式中ASP平台的体系结构以及系统平台的设计原则进行了详细阐述．     

考虑两阶段运输的加工资源共享调度策略

研究加工资源可分享环境下生产与两阶段运输的协同调度问题,重点研究加工资源共享对客户订单完工时间的影响。以最小化所有订单的总完工时间为优化目标,对比分析分享加工模式与传统加工模式在供应链服务时间方面的优劣。对于只有1个供应商、2个制造商和1个客户的订单加工配送网络,分析得出了分享加工模式占优的条件以及最优分享策略;对于2个供应商、2个制造商和2个客户的订单加工配送网络,在制造企业采用先到先服务（FCFS）规则时,传统加工模式优于2个客户订单同时分享的加工方案,表明只分享单个客户订单是分享加工模式占优的充分条件。研究结论可为分享经济下制造平台制定客户订单的加工和运输协同调度方案提供理论支撑。     

PDM框架下飞机结构件制造过程管理研究

飞机结构件制造过程的管理和控制是提高飞机研制生产效率和质量的重要环节。通过对飞机结构件的加工制造过程和管理进行分析研究,结合目前飞机制造企业制造过程的管理体系,构建了基于PDM的飞机结构件制造过程管理数字化平台,并研究了在该平台上飞机结构件的MBOM管理。     

新产品开发过程应用服务提供平台的运行支持系统

针对大多数中小型制造企业在新产品开发过程中面临的资金、技术、设备和人才等资源不足的问题,结合网络化制造的思想和应用服务提供商模式,提出了一种为制造企业提供从新产品反求、建模、设计,到加工制造一体化成套服务的新产品开发过程应用服务提供平台及其运行模式,研究和建立了支撑该模式应用的运行支持系统,包括系统的体系结构、功能结构和运行流程。介绍了该系统在中国重庆市的应用情况,给出了一个典型应用案例。     

基于ASP的制造网格资源发现模型

针对制造网格应用上的困难,基于应用服务提供商(ASP)模式,提出了基于多区域多层次树型覆盖网络的ASP平台分布的制造网格资源发现模型,在此基础上提出了自动在线组建机制及其波浪推进式的信息更新算法,剖析了模型的ASP应用模式的本质,进而给出了资源发现机制及其实现算法.与传统的典型资源发现相关模型相比,该模型在资源发现和资源更新方面更具优越性.文中还基于该资源发现模型,设计并实现了包括基于eUDDI注册中心的资源注册、资源发现、资源信息监控与动态维护以及信息交流等功能的企业信息节点原型系统.     

“集成电路工艺”虚拟实践平台建设与教学实践

在集成电路(IC)工艺的实验教学中,互补金属氧化物半导体(CMOS)集成电路加工工艺实验教学是学生加深对半导体工艺理解的重要环节。由于微电子行业的实验场所、时间以及实验设备的各种限制,真正的实际操作非常有限,导致实验教学效果并不理想。基于这些原因,开发了“集成电路工艺”虚拟实践平台,该平台对传统的实际操作实验教学进行了虚拟仿真,通过该平台学生可以进行集成电路工艺的模拟操作,极大地促进了学生的实验兴趣,并能够加深对集成电路制造工艺的理解。该虚拟实践平台已在学生中使用,取得了良好的实验教学效果。虚拟实践平台可以通过互联网进行优质教学资源共享,对微电子专业学生的实验教学具有良好的促进作用。     

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.     

Features of Women's language

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

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.     

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.     

Achieving Unusual States of Matter Under High Pressure

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-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

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-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

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     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

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