数据流
- 与 数据流 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The thesis studies the difference between GWSs composition and traditional workflow applications, proposes the implement mechanism and technical architecture of GWSs composition and defines the reference model of GWSs composition platform, which provide holistic framework and top-level guidance for studying dynamic GWSs composition technology, designing GWSs composition platform, and implementing representative composite service applications.2、Theories and methods of composite process modeling and process analysis. This thesis proposes a meta-model of Geo-spatial Web services composition process defining from two aspects, i.e. process and resource. According to the process definition meta-model, we propose a new Geo-spatial Web services composition Process/Resource model based on extended WF-net, which effectively resolves the problems on uncertain activity option and dynamic variation of service in composite process model. A notion with regard to soundness of process model is proposed from three aspects, i.e. the structural correctness of process model, validity of data link and validity of resource. The notion of soundness definitely gives a dividing line on correctness of composite GWS process. This thesis analyzes sufficient and essential terms of soundness, and studies compositional property of WSCP/R-net models which provides an effective method to construct a soundness WSCP/R-net model. According to WSCP/R-net, the thesis proposes composition algebra and studies the properties of it. Based on the composition algebra, 6 kinds of composite process reduction rules are induced to optimize the process.3、Geo-spatial Web service QoS model and its application architecture. This thesis proposes an extendable GWS QoS model from three aspects, i.e. Geo-spatial Web Service itself, networking conditions and service consumer which can be used to distinguish GWSs with overlapping or identical functionality. We work over the QoS evaluation methods of composite GWS process which can be used to guide the execution, monitor and service selection of composition process. Aming at some disadvantages in traditional Web service discovery model for its lacking of QoS supporting, this thesis proposes a new service discovery model SDMQ supporting QoS constraints.4、Technologies of composite service executing. SSPL, a new composite service process language, is defined to overcome the disadvantages of existing composite services process languages which can not adapt to the dynamic variation of Geo-spatial Web Services. An algorithm is described to translate WSCP/R-net model into SSPL. The thesis studies the model of dynamic services selection with QoS global optimization, presenting an algorithm GODSS to resolve dynamic services selection with QoS global optimization in GWSs Composition.5、Design and implement experimental system and representative applications. According to the research findings presented above, we design and implement an experimental system and construct two representative applications to show that our achievements are effective and practical.
针对当前空间信息服务聚合研究中存在的若干不足,本文重点在基于工作流的空间信息服务聚合框架、空间信息服务聚合流程建模和分析技术、空间信息服务QoS模型及应用体系以及空间信息服务聚合流程执行等几个方面进行深入研究,主要工作和创新点包括:1、基于工作流的空间信息服务动态聚合框架:研究了空间信息服务动态聚合和传统工作流应用的不同,在此基础上提出了基于工作流技术的空间信息服务动态聚合实现机制、技术体系和参考模型,为研究空间信息服务聚合的关键技术、开发服务聚合支撑平台以及在此基础上构造特定的空间信息服务聚合应用提供了总体框架和顶层指导。2、空间信息服务聚合流程建模和分析技术:首先基于动态服务聚合流程建模的需求和空间信息服务动态变化的应用实际,从服务聚合的过程维和资源维出发定义了服务聚合流程定义元模型;与之相对应,对基本的WF-net进行扩展,提出服务聚合流程/资源网作为空间信息服务聚合流程的形式化描述模型,有效解决了现有的基于基本Petri网和工作流网的服务聚合建模方法所不能解决的不确定路径选择和服务的动态变化性问题;从流程结构正确性、数据依赖有效性和资源实现有效性三个方面提出了WSCP/R-net健壮性的概念,明确界定了聚合流程正确性的标准,并对WSCP/R-net模型的健壮性分析方法和WSCP/R-net模型的组合特性进行了研究;提出了空间信息服务聚合代数算子并对其性质进行了研究,在此基础上提出了6种聚合流程约简规则,从而可达到优化聚合流程、提高聚合流程执行效率的目的。3、空间信息服务QoS模型和应用体系:从服务本身、网络环境和服务消费者三个层次出发,提出了一个可扩展的空间信息服务QoS模型GSQM,实现了对空间信息服务的度量和评价,并对GSQM不同质量要素信息的客观、公正采集方法进行了研究;研究了空间信息服务聚合流程QoS评价方法,有效支持了空间信息服务聚合流程的执行、监控以及服务选择等操作;针对目前的服务发现模型仅支持服务功能性描述、不能有效满足空间信息服务应用需求的现状,提出了一种新的支持QoS约束的服务发现模型SDMQ,并对模型的实现框架进行了研究。4、空间信息服务聚合流程执行技术:针对现有的服务聚合流程描述语言不能有效满足空间信息服务动态聚合流程描述的特点,基于BPEL4WS提出了一种新的空间信息服务聚合流程描述语言SSPL;研究了满足健壮性要求的WSCP/R-net模型向SSPL的转换算法,在此基础上可以满足用户无显式编码来实现空间信息服务聚合应用的目的;研究了服务动态选择QoS全局优化模型,并在此基础上提出了一种解决服务动态选择QoS全局优化问题的实现算法GODSS.5、基于论文研究成果,设计实现了"空间信息服务聚合实验系统",并构建了"矿产资源评价"和"城市消防应急响应"两个典型应用案例,对论文所述模型、方法的可行性和有效性进行了验证。
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The computational formula on pressure increment in bottomholes affected by drilling speed is deduced as well.
首先利用在钻井过程中随钻测量起钻后地面回旋的方法,自行研制开发出能够抗180℃高温,具有抗震功能的测量仪器;其次,在原有模型基础上,利用实例数据进行分析,考虑固相和多相流加速度压降的影响,研制开发了流钻欠平衡钻井环空多相流井底压力的计算模型,并推导出机械钻速影响井底压力增量的计算公式;最后,为验证模型精度,开发了钻井监测与分析计算软件,软件计算结果与实测数据叶比,误差小于3%。
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The second advantage is that globose targe is the most sensitive to variety of coal powder concentration In the experiment, a testing piping system for coal powder and air two phase flow was built in laboratory. Experiment adopt disk target and spherical target two kinds of target.
将两组试验数据拟和得到的空气单相流关系式的斜率与两相流关系式的斜率进行比较,球形靶试验数据拟和公式的斜率较大,说明球形靶确实比圆片靶对两相流粒子浓度的反应灵敏度高。
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Client supplies complete Graphic User Interface, accomplishing the management of JobFlow and system. Communication agent accomplishes complete communication between client and server by TCP/IP network communication protocol and platform independent data communication protocol. Server supplies full support of JobFlow. The superstratums are the JobFlow Definition Subsystem and JnwEngine, which are responsible for the definition and execution of JobFlow. The understratum is the Network Queue System , which realizes the schedule and execution of job, thus all kinds of resources in computer network system can be utilized in order to improve execution efficiency and reduce job cost.
客户端提供完全的GUI用户界面,完成用户对作业流的管理及对系统的管理功能;通讯代理采用TCP/IP网络通信协议以及与平台无关的数据通讯协议来实现客户与服务器之间的完全通讯;服务器端提供对作业流的全面支持,上层由作业流定义子系统和作业流引擎负责完成对作业流的定义与执行,底层使用网络队列系统来实现对作业的调度与执行,使用户能够最大限度地利用计算机网络系统中的各种资源,以提高执行效率、降低作业成本。
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Communication agent accomplishes complete communication between client and server by TCP/IP network communication protocol and platform independent data communication protocol. Server supplies full support of JobFlow. Its superstratum is the JobFlow Definition Subsystem and JnwEngine, which is responsible for the definition and execution of JobFlow. And its understratum is the Network Queue System, which realizes the schedule and execution of job. Through the NQS, all kinds of sources in computer network system can be farthest utilized in order to improve execution efficiency and reduce job cost.
客户端提供完全的GUI用户界面,完成用户对作业流的管理及对系统的管理功能;通讯代理采用TCP/IP网络通信协议以及与平台无关的数据通讯协议来实现客户与服务器之间的完全通讯;服务器端提供对作业流的全面支持,上层由作业流定义子系统和作业流引擎负责完成对作业流的定义与执行,底层使用网络队列系统来实现对作业的调度与执行,使用户能够最大限度地利用计算机网络系统中的各种资源,以提高执行效率、降低作业成本。
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Therefore, with regards to the cases of the application to the streaming media on the demand of the real time quality and the contradiction of the inadequate bandwidth of the present Internet, the article analyzes the unbalance QoS controling strategies from the viewpoint of the predistribution of bandwidth, the streaming dispatching, the handling of the data losing, and the processing mistakes and so forth, taking advantages of the unbalance on the distriution importance of the streaming media data, to guarantee the real time of the important data.
为此,针对流媒体应用的实时性要求和当前Internet带宽不足的矛盾,本文利用流媒体数据中重要性分布的非均匀,从带宽预分配、流调度、丢包处理、错误处理等多方面进行非均匀的QoS控制策略,保证重要数据的实时性。
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The major achievement of this paper is: Based on characteristics of the traffic data distribution, execute pattern recognition operations on traffic condition on two dimensions by clustering, then use BP neural network to describe and forecast traffic flow aiming at each pattern. Making use of classic flow-occupancy inverse "V" model, implement polynomial fitting using least-squares algorithm and statistics method on flow curves to detect outliers which are proved to be not accord with practice through the actual implement, then use the moving average model to recorrect the outliers and absent. Make correlation analysis on muti-direction flow queues of the intersection and ones of upriver intersections, choose flow queue with high correlation as assistant one to improve the error tolerance of the prediction system, at the same time we can use the method to give an estimation of flow in intersection with out sensors. We design and implement an SOA(Service-Oriented Architecture)-based UTDD(urban traffic data mining development) with high expansibility and performance, which implement unified management and call of the data-mining application though defining a XML-based description of data-mining process and a common interface to call data-mining process, finally we build traffic flow prediction application model on UTDD.
根据交通流量数据分布的特征,提出基于k-means的二次聚类方法,对交通流量在流量大小和时间上进行模式划分,进而对各个交通流模式进行基于BP神经网络的描述和预测,从而提高模型对流量预测的精度; 2)根据流量/时间占有率倒&V&字形曲线分布模型,提出基于最小二乘法的三次多项式曲线拟合和统计方法的异常检测方法,实际应用表明该方法能够有效识别异常数据,然后根据移动平均算法对异常数据进行修正; 3)基于序列相关性分析,分别对预测方向的交通流量数据序列、上游路口相关序列以及预测路口其它各个方向上的交通流量序列进行分析,选择相似性流量序列,作为辅助序列提供其他没有检测器路口的流量估计; 4)设计和实现了基于SOA(Service-Oriented Achitecture)的高性能、可扩展的智能交通数据挖掘系统UTDD,该系统通过定义基于XML的数据挖掘过程描述和通用的过程模型接口,实现数据挖掘应用的统一管理和调用,最后在UTDD上建立了基于路口流量预测的应用模型。
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MAX1999EEI Pinout: 8- to 32-bit and 16- to 32-bit word packing options Programmable wait state options: 2 to 31 CCLK Digital audio interface includes six serial ports, two pre- cision clock generators, an input data port, three programmable timers and a signal routing unit Serial ports provide: Six dual data line serial ports that operate at up to 50 Mbits/s for a 200 MHz core on each data line each has a clock, frame sync, and two data lines that can be configured as either a receiver or transmitter pair Left-justified sample pair and I2S support, programmable direction for up to 24 simultaneous receive or transmit channels using two I2S compatible stereo devices per serial port TDM support for telecommunications interfaces including 128 TDM channel support for telephony interfaces such as H.100/H.110 Up to 12 TDM stream support, each with 128 channels per frame Companding selection on a per channel basis in TDM mode Input data port provides an additional input path to the DSP core configurable as either eight channels of I2S or serial data or as seven channels plus a single 20-bit wide syn- chronous parallel data acquisition port Supports receive audio channel data in I2S, left-justified sample pair, or right-justified mode Signal routing unit provides configurable and flexible connections between all DAI components, six serial ports, an input data port, two precision clock generators, three timers, 10 interrupts, six flag inputs, six flag outputs, and 20 SRU I/O pins Serial peripheral interface Master or slave serial boot through SPI Full-duplex operation Master-slave mode multimaster support Open drain outputs Programmable baud rates, clock polarities, and phases 3 Muxed Flag/IRQ lines 1 Muxed Flag/Timer expired line ROM based security features: JTAG access to memory permitted with a 64-bit key Protected memory regions that can be assigned to limit access under program control to sensitive code PLL has a wide variety of software and hardware multi- plier/divider ratios JTAG background telemetry for enhanced emulation features IEEE 1149.1 JTAG standard test access port and on-chip emulation Dual voltage: 3.3 V I/O, 1.2 V core Available in 136-ball BGA and 144-lead LQFP packages Lead free packages are also available
MAX1999EEI引脚说明: 8 - 32位和16 - 32位字包装选择可编程等待状态的选择:2至31个CCLK数字音频接口包括6个串行端口,两个前643时钟发生器,输入数据端口, 3可编程定时器和一个信号路由单元串行端口提供:六双串口数据线,在高达50 Mbps的操作/为200兆赫的每个数据行每个人都有一个时钟,帧同步的核心秒,和两个数据可以作为任何一个接收器或发射器对左对齐和I2S配对样本的支持下,最多可同时接收或传送24个频道,每使用两个系列的I2S兼容立体声设备配置可编程方向线;港口的TDM通信接口,包括支持128个电话接口的TDM的渠道,如H.100/H.110支持多达12个的TDM流的支持下,每帧128个频道每个压缩扩展每通道的基础上选择在TDM模式输入数据端口提供了一个额外的输入路径的DSP核心配置为I2S或串行数据或7加一个20位宽的SYN -异步的并行数据采集接口通道或8通道;支持接收通道I2S音频数据,左对齐样本对,或右对齐模式信号路由单元组件之间提供所有戴配置和灵活的连接,6个串行端口,一个输入数据端口,两个精密时钟发生器,3个定时器,10个中断,六旗投入,产出6个旗,20曼谷南南区域股的I / O管脚串行外设接口的硕士或奴隶通过SPI串行启动全双工运作主从模式多主机支持开漏输出可编程波特率,时钟极性和第三期合并调制旗/ IRQ线路1合并调制旗/定时器过期线光盘的防伪特征:JTAG的访问与64位受保护的关键允许内存内存可分配给程序访问控制的限制下对敏感地区有一个代码锁相环/遥测分比率为背景的JTAG仿真功能增强的IEEE 1149.1 JTAG标准测试访问端口的软件和硬件多钳各种各样和片上仿真双电压:3.3六/输出,可在1.2 V核心136球BGA封装和144引脚LQFP封装无铅封装,也可
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TDA4864 Pinout: 8- to 32-bit and 16- to 32-bit word packing options Programmable wait state options: 2 to 31 CCLK Digital audio interface includes six serial ports, two pre- cision clock generators, an input data port, three programmable timers and a signal routing unit Serial ports provide: Six dual data line serial ports that operate at up to 50 Mbits/s for a 200 MHz core on each data line each has a clock, frame sync, and two data lines that can be configured as either a receiver or transmitter pair Left-justified sample pair and I2S support, programmable direction for up to 24 simultaneous receive or transmit channels using two I2S compatible stereo devices per serial port TDM support for telecommunications interfaces including 128 TDM channel support for telephony interfaces such as H.100/H.110 Up to 12 TDM stream support, each with 128 channels per frame Companding selection on a per channel basis in TDM mode Input data port provides an additional input path to the DSP core configurable as either eight channels of I2S or serial data or as seven channels plus a single 20-bit wide syn- chronous parallel data acquisition port Supports receive audio channel data in I2S, left-justified sample pair, or right-justified mode Signal routing unit provides configurable and flexible connections between all DAI components, six serial ports, an input data port, two precision clock generators, three timers, 10 interrupts, six flag inputs, six flag outputs, and 20 SRU I/O pins Serial peripheral interface Master or slave serial boot through SPI Full-duplex operation Master-slave mode multimaster support Open drain outputs Programmable baud rates, clock polarities, and phases 3 Muxed Flag/IRQ lines 1 Muxed Flag/Timer expired line ROM based security features: JTAG access to memory permitted with a 64-bit key Protected memory regions that can be assigned to limit access under program control to sensitive code PLL has a wide variety of software and hardware multi- plier/divider ratios JTAG background telemetry for enhanced emulation features IEEE 1149.1 JTAG standard test access port and on-chip emulation Dual voltage: 3.3 V I/O, 1.2 V core Available in 136-ball BGA and 144-lead LQFP packages Lead free packages are also available
TDA4864引脚说明: 8 - 32位和16 - 32位字包装选择可编程等待状态的选择:2至31个CCLK数字音频接口包括6个串行端口,两个前643时钟发生器,输入数据端口, 3可编程定时器和一个信号路由单元串行端口提供:六双串口数据线,在高达50 Mbps的操作/为200兆赫的每个数据行每个人都有一个时钟,帧同步的核心秒,和两个数据可以作为任何一个接收器或发射器对左对齐和I2S样本对支持,最多可同时接收或传送24个频道,每使用两个系列的I2S兼容立体声设备配置可编程方向线;港口的TDM通信接口,包括支持128个电话接口的TDM的渠道,如H.100/H.110支持多达12个的TDM流的支持下,每帧128个频道每个压缩扩展每通道的基础上选择在TDM模式输入数据端口提供了一个额外的输入路径的DSP核心配置为I2S或串行数据或7加一个20位宽的SYN -异步的并行数据采集接口通道或8通道;支持接收通道I2S音频数据,左对齐样本对,或右对齐模式信号路由单元组件之间提供所有戴配置和灵活的连接,6个串行端口,一个输入数据端口,两个精密时钟发生器,3个定时器,10个中断,六旗投入,产出6个旗,20曼谷南南区域股的I / O管脚串行外设接口的硕士或奴隶通过SPI串行启动全双工运作主从模式多主机支持开漏输出可编程波特率,时钟极性和第三期合并调制旗/ IRQ线路1合并调制旗/定时器过期线光盘的防伪特征:JTAG的访问与64位受保护的关键允许内存内存可分配给程序访问控制的限制下对敏感地区有一个代码锁相环/分比率背景遥测的JTAG仿真功能增强的IEEE 1149.1 JTAG标准测试访问端口软件和硬件多钳各种各样和片上仿真双电压:3.3六/输出,可在1.2 V核心136球BGA封装和144引脚LQFP封装无铅封装,也可
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This article describes the research and application of the direct-reading flow temperature and flow pressure test technology online in heavy oil thermal recovery.the technology is mainly used the high sensitivity of the temperature and pressure sensors to capture temperature and flow pressure data of the downwell in the normal oil production wells,and then Transport the singal through a specially designed capillary armored cable forward pass to the ground data collection, processing and display.
中文摘要:摘要:本文介绍稠油热采生产井井下直读式流温流压在线测试技术的研究与应用,该技术主要是利用安装在井下测试仪内的高灵敏度的温度、压力传感器采集生产井正常生产时的井下流温流压数据,然后通过特殊设计加工的毛细管铠装电缆直传到地面进行数据采集、处理显示。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力