摘要：Turbocharging technology is today considered as a promising way for internal combustion engine energy saving and CO2 *** design is a major challenge for turbocharged engine performance *** turbocharger designer must draw upon the information of engine operation conditions,and an appropriate link between the engine requirements and design features must be carefully developed to generate the most suitable design *** objective of this research is to develop a turbocharger design approach for better turbocharger matching to an internal combustion *** development of the approach is based on the concept of turbocharger design and interaction links between engine cycle requirements and design parameter values.A turbocharger through flow model is then used to generate the design *** integrated method has been applied with success to a gasoline engine turbocharger assembly.

摘要：A multilayer perceptron(MLP) artificial neural network(ANN) model has been optimized by the multi-objective ant colony optimization(MOACO) algorithm, which uses three objective functions. A sensitivity analysis to choose MOACO parameter values is carried out by calculating hypervolume metric, and the proposed approach adopts the Vlsekriterijumska Optimizacija I Kompromisno Resenje(VIKOR) decision method to choose final compromised solution on the Pareto front obtained from MOACO. As a result, we used the MLP-MOACO developed model to estimate the value of engine emissions of NOxin a four stroke, spark ignition(SI) gasoline engine and observed acceptable correlation coefficient(R^2) of 0.99978.

摘要：针对以往作物模型都是基于单点进行研究而导致空间外推不理想、尺度上升困难等问题,根据水稻生产潜力模型和栅格计算的特点,将模型与地理信息系统集成,综合利用空间数据和属性数据,在Visual *** 2005开发环境中嵌入ArcGIS engine组件.利用COM技术,遵照软件系统设计思想,设计并实现了水稻生产潜力动态预测系统.该系统使模型参数得到系统化处理,模型计算更加高效,分析更加精确,能较好地实现水稻生产潜力动态预测功能,同时对农业资源管理也具有非常重要的作用.

摘要：强流重离子加速器装置(HIAF)的控制系统采用实验物理和工业控制系统(EPICS)架构,运行数据存储系统为HIAF运行中的运行数据、历史数据和静态参数提供稳定可靠的存储。针对当前EPICS架构下的数据存储工具仅支持关系型数据库的不足,开发非关系型数据库MongoDB接口,并利用MongoDB嵌套对象和多层级存储结构的特点优化存储表结构,实现波形、图像等非关系型数据的高效存储;为调束人员提供基于标志位PV(FlagPV)方式的加速器运行数据手动存储方案以提升历史数据检索效率及数据可用性;同时针对海量历史数据的存储需要,利用MongoDB Sharding搭建MongoDB分布式集群。

摘要：描述了ArcGIS engine的特点,探讨了其在车辆监控系统中的应用,在分析车辆监控系统的组成和工作原理基础上,针对系统所需完成的功能,采用VB开发工具,集成ArcGIS engine控件,实现了图层控制、车辆定位、轨迹回放、空间数据查询、路径分析等功能,该文完成了系统设计方案,描述了系统的实现过程。

摘要：The relationship between engine mechanics and thermo-dynamics has been investigated by means of numerical *** inherent mismatching between the mechanical behaviors and the thermodynamic process in internal combustion engine is identified,which is believed to be one of the important limiting factors of energy efficiency for conventional engines available in the current *** approach for engine efficiency improvement through optimal matching between mechanics and thermodynamics(OMBMT)is *** ideal matching model is defined and the conflicts due to the constraints among the mapping strokes in a 4-stroke engine are analyzed.A novel mechanical model is built for approaching optimal matching among all 4 individual strokes in a 4-stroke spark-ignition engine,which is composed of non-circular gears(NCG)and integrated with conventional slider crank engine *** means of digital mechanical model and numerical simulation,the matching gains among all 4 strokes are defined and calculated for quantifying the NCG engine efficiency improvement by comparing with a baseline *** potentials with the OMBMT implemented and the enhancements made by NCG mechanism for engines in terms of overall engine efficiency are *** on the results achieved,it is recommended that the feasibility studies and the experimental validations should be conducted to verify the engine matching concept and effectiveness of the NCG mechanism engine model proposed,and the engine performance and NCG design parameters should be further optimized.

摘要：数字农业是在"数字地球"的基础上提出并发展的,是21世纪新型的农业模式,以3S技术应用为核心的数字农业空间信息管理平台开发研究是数字农业研究的重要方向之一。文章着重分析了数字农业空间信息管理平台开发中所涉及到的关键技术;在研究空间信息管理平台桌面部分的开发背景、需求分析的基础上,对平台进行了总体设计、数据库设计、系统功能设计、界面设计;对系统各个功能模块进行了开发实现。

摘要：目前我国森林火灾多发,对森林的破坏性极大,危害极深,造成的经济损失十分严重。该研究基于地理信息系统二次开发工具ArcGIS engine设计,开发了一套林火扑救辅助决策模块。该模块主要实现了林火扑救决策中的火点定位、扑火战场预测、扑火最短路径分析、扑火资源有效配置、阻火隔离带的正确设置等功能。这些功能的设计针对林火扑救中的各方面决策工作,结合3S技术和计算机技术,可以有效地提高决策人员对于林火扑救的决策能力。此模块可方便嵌入其他林火管理系统中,实现林火扑救辅助决策功能。

摘要：本文根据胜利油田土地管理工作的特点,结合GIS二次开发技术,采用集成开发模式,基于VC6.0平台和ArcGIS engine 9.2,利用C++语言编程实现,详细阐述了系统的总体框架设计及其实现的部分功能。

摘要：将ArcGIS engine应用到地下管线信息管理中,设计、开发了基于ArcGIS engine的地下管线信息系统。系统总体为3层体系架构,采用Client/Server模式实现数据集中存储,后端数据库平台选用SQL Server,利用ArcSDE空间数据引擎实现属性数据和空间数据一体化管理。