期刊文献+
共找到14篇文章
< 1 >
每页显示 20 50 100
网络报销和ORACLE ERP系统的接口实现 被引量:2
1
作者 梅雪 韩之俊 《中国管理信息化》 北大核心 2005年第10期5-8,共4页
实现网络报销和Oracle ERP系统接口的难点在于接口边界和接口数据的分析以及在此基础上的技术实现过程,本文系统的提出了解决此类问题的处理模式,并在实际环境中得以应用。
关键词 网络报销 ERP系统数 据接口 ERP系统 系统接口 ORACLE ORACLE 处理模式 实现过程 技术
下载PDF
基于.NET的股票信息实时查询平台的设计与实现 被引量:1
2
作者 郑元圳 《电脑编程技巧与维护》 2009年第21期47-59,共13页
以实例讲解C#.NET基于Webclient访问股票数据接口,实时更新数据库SQLServer 2005中的股票信息,并且使用ADO.NET访问数据库技术,在前端使用RDLC报表显示股票信息的编程方法及实现过程。
关键词 股票数据接口 RDLC报表 WebClient网络编程 ADO.NET
下载PDF
Individualization of Data-Segment-Related Parameters for Improvement of EEG Signal Classification in Brain-Computer Interface 被引量:1
3
作者 曹红宝 BESIO Walter G +1 位作者 JONES Steven 周鹏 《Transactions of Tianjin University》 EI CAS 2010年第3期235-238,共4页
In electroencephalogram (EEG) modeling techniques, data segment selection is the first and still an important step. The influence of a set of data-segment-related parameters on feature extraction and classification in... In electroencephalogram (EEG) modeling techniques, data segment selection is the first and still an important step. The influence of a set of data-segment-related parameters on feature extraction and classification in an EEG-based brain-computer interface (BCI) was studied. An auto search algorithm was developed to study four datasegment-related parameters in each trial of 12 subjects’ EEG. The length of data segment (LDS), the start position of data (SPD) segment, AR order, and number of trials (NT) were used to build the model. The study showed that, compared with the classification ratio (CR) without parameter selection, the CR was increased by 20% to 30% with proper selection of these data-segment-related parameters, and the optimum parameter values were subject-dependent. This suggests that the data-segment-related parameters should be individualized when building models for BCI. 展开更多
关键词 data segment parameter selection EEG classification brain-computer interface (BCI)
下载PDF
On Hybrid Computer-Aided Tools to Interface Design Data
4
作者 Hirpa G. Lemu 《Journal of Mechanics Engineering and Automation》 2013年第7期397-404,共8页
Recognizing the drawbacks of stand-alone computer-aided tools in engineering, several hybrid systems are suggested with varying degree of success. In transforming the design concept to a finished product, in particula... Recognizing the drawbacks of stand-alone computer-aided tools in engineering, several hybrid systems are suggested with varying degree of success. In transforming the design concept to a finished product, in particular, smooth interfacing of the design data is crucial to reduce product cost and time to market. Having a product model that contains the complete product description and computer-aided tools that can understand each other are the primary requirements to achieve the interfacing goal. This article discusses the development methodology of hybrid engineering software systems with particular focus on application of soft computing tools such as genetic algorithms and neural networks. Forms of hybridization options are discussed and the applications are elaborated using two case studies. The forefront aims to develop hybrid systems that combine the strong side of each tool, such as, the learning, pattern recognition and classification power of neural networks with the powerful capacity of genetic algorithms in global search and optimization. While most optimization tasks need a certain form of model, there are many processes in the mechanical engineering field that are difficult to model using conventional modeling techniques. The proposed hybrid system solves such difficult-to-model processes and contributes to the effort of smooth interfacing design data to other downstream processes. 展开更多
关键词 Hybrid systems finite element analysis genetic algorithm neural networks design optimization EDM (electro-dischargemachining) process.
下载PDF
A High-Elasticity Router Architecture with Software Data Plane and Flow Switching Plane Separation 被引量:1
5
作者 GAO Xianming WANG Baosheng +1 位作者 ZHANG Xiaozhe MA Shicong 《China Communications》 SCIE CSCD 2016年第3期37-52,共16页
Routers have traditionally been architected as two elements: forwarding plane and control plane through For CES or other protocols. Each forwarding plane aggregates a fixed amount of computing, memory, and network int... Routers have traditionally been architected as two elements: forwarding plane and control plane through For CES or other protocols. Each forwarding plane aggregates a fixed amount of computing, memory, and network interface resources to forward packets. Unfortunately, the tight coupling of packet-processing tasks with network interfaces has severely restricted service innovation and hardware upgrade. In this context, we explore the insightful prospect of functional separation in forwarding plane to propose a next-generation router architecture, which, if realized, can provide promises both for various packet-processing tasks and for flexible deployment while solving concerns related to the above problems. Thus, we put forward an alternative construction in which functional resources within a forwarding plane are disaggregated. A forwarding plane is instead separated into two planes: software data plane(SDP) and flow switching plane(FSP), and each plane can be viewed as a collection of "building blocks". SDP is responsible for packet-processing tasks without its expansibility restricted with the amount and kinds of network interfaces. FSP is in charge of packet receiving/transmitting tasks and can incrementally add switching elements, such as general switches, or even specialized switches, to provide network interfaces for SDP. Besides, our proposed router architecture uses network fabrics to achievethe best connectivity among building blocks,which can support for network topology reconfiguration within one device.At last,we make an experiment on our platform in terms of bandwidth utilization rate,configuration delay,system throughput and execution time. 展开更多
关键词 router architecture forwarding plane functional separation packet-processing task packet receiving/transmitting task network fabric
下载PDF
Real-time Data Communication in Photoelectric Image Detection System
6
作者 CHEN Wen-tao LIU Yong-gui HUANG Min 《Semiconductor Photonics and Technology》 CAS 2006年第3期200-204,共5页
High speed data communication between digital signal processor and the host is required to meet the demand of most real-time systems. PCI bus technology is a solution of this problem. The principle of data communicati... High speed data communication between digital signal processor and the host is required to meet the demand of most real-time systems. PCI bus technology is a solution of this problem. The principle of data communication based on PCI has been explained. Meanwhile, the technology of data transfer between synchronous dynamic RAM(SDRAM) and an mapping space of on-chip memory(L2) by expansion direct memory access(EDMA) has also been realized. 展开更多
关键词 Data communication PCI Expansion direct memory access DM642
下载PDF
SWN: An SDN Based Framework for Carrier Grade WiFi Networks 被引量:1
7
作者 LEI Tao WEN Xiangming +3 位作者 LU Zhaoming ZHAO Xing LI Yangchun ZHANG Biao 《China Communications》 SCIE CSCD 2016年第3期12-26,共15页
With the rapid growth of mobile data traffic and vast traffic offloaded from cellular network, Wi-Fi has been considered as an essential component to cope with the tremendous growth of mobile data traffic. Although op... With the rapid growth of mobile data traffic and vast traffic offloaded from cellular network, Wi-Fi has been considered as an essential component to cope with the tremendous growth of mobile data traffic. Although operators have deployed a lot of carrier grade Wi-Fi networks, but there are still a multitude of arrears for nowadays Wi-Fi networks, such as supporting seamless handover between APs, automatic network access and unified authentication, etc. In this paper, we propose an SDN based carrier grade Wi-Fi network framework, namely SWN. The key conceptual contribution of SWN is a principled refactoring of Wi-Fi networks into control and data planes. The control plane has a centralized global view of the whole network, can perceive the underlying network state by network situation awareness(NAS) technique, and bundles the perceived information and network management operations into northbound Application Programming Interface(API) for upper applications. In the data plane, we construct software access point(SAP) to abstract the connection between user equipment(UE) and access point(AP). Network operators can design network applications by utilizing these APIs and the SAP abstraction to configure and manage the whole network, which makes carrier grade Wi-Fi networks more flexible, user-friendly, and scalable. 展开更多
关键词 SWN carrier grade Wi-Finet works SDN seamless handover load balancing Hotspot 2.0 traffic offloading
下载PDF
LOW-POWER LVDS I/O INTERFACE FOR ABOVE 2GB/S-PER-PIN OPERATION 被引量:3
8
作者 Wang Xihu Wu Longsheng Liu Youbao 《Journal of Electronics(China)》 2009年第4期525-531,共7页
Low Voltage Differential Signaling (LVDS) has become a popular choice for high-speed serial links to conquer the bandwidth bottleneck of intra-chip data transmission. This paper presents the design and the implementat... Low Voltage Differential Signaling (LVDS) has become a popular choice for high-speed serial links to conquer the bandwidth bottleneck of intra-chip data transmission. This paper presents the design and the implementation of LVDS Input/Output (I/O) interface circuits in a standard 0.18 μm CMOS technology using thick gate oxide devices (3.3 V), fully compatible with LVDS standard. In the proposed transmitter, a novel Common-Mode FeedBack (CMFB)circuit is utilized to keep the common-mode output voltage stable over Process, supply Voltage and Temperature (PVT) variations. Because there are no area greedy resistors in the CMFB circuitry, the disadvantage of large die area in existing transmitter structures is avoided. To obtain sufficient gain, the receiver consists of three am- plifying stages: a voltage amplifying stage, a transconductance amplifying stage, and a transimpedance amplifying stage. And to exclude inner nodes with high RC time constant, shunt-shunt negative feedback is introduced in the receiver. A novel active inductor shunt peaking structure is used in the receiver to fulfill the stringent requirements of high speed and wide Common-Mode Input Region (CMIR) without voltage gain, power dissipation and silicon area penalty. Simulation results show that data rates of 2 Gbps and 2.5 Gbps are achieved for the transmitter and receiver with power con- sumption of 13.2 mW and 8.3 mW respectively. 展开更多
关键词 Input/Output (I/O) Low Voltage Differential Signaling (LVDS) TRANSMITTER Receiver Active inductor shunt peaking
下载PDF
Design of universal data structure and interface based on dynamic self-incremental record
9
作者 Yan Li Peng Ji 《International Journal of Technology Management》 2015年第3期115-116,共2页
In the software of data management system, there are some different lengths of records needed storing in an array, and the number of records often increases in use of the software. A universal data structure is presen... In the software of data management system, there are some different lengths of records needed storing in an array, and the number of records often increases in use of the software. A universal data structure is presented in the design, and it provide an unified interface for dynamic storage records in different length, so that the developers can call the unified interface directly for the data storage to simplify the design of data management system. 展开更多
关键词 data management system length-variable data record dynamic self-incremental array
下载PDF
A New Multi-platform Data Acquisition System for Power Quality Metrological Certification
10
作者 Maurizio Caciotta Stefano Di Pasquale Sabino Giametti Fabio Leccese Daniele Trinca 《Journal of Energy and Power Engineering》 2014年第7期1279-1285,共7页
In order to provide power quality monitoring activities with metrological certification, a DAS (data acquisition system) has been designed, realized and characterized. The system allows acquisition on tri-phases plu... In order to provide power quality monitoring activities with metrological certification, a DAS (data acquisition system) has been designed, realized and characterized. The system allows acquisition on tri-phases plus neutral lines picking up 499 samples per period of the fundamental at 50 Hz. To ensure certified measurements, the system gets external certified time and voltage references. The system uses a FTDI Virtual Com Port Driver to communicate data over High Speed RS232 virtual interface and it does not need any advanced programming skill. The choice to use a virtual serial communication makes the data acquisition software portable over many platforms, regardless by the development environment and by the programming language. To test the proposed device some custom software have been written in many programming language (C^#, VB6, LabView, MatLab), moreover in order to characterize the device the most common ADC (analog to digital converter) performing test have been applied. 展开更多
关键词 Power quality acquisition card multi-platform system.
下载PDF
Discussion on Network Multimedia Interface Design under the Perspective of Communication Study
11
作者 Xinyu Li 《International English Education Research》 2015年第11期25-26,共2页
Using multimedia writing tools ‘Author ware' for Windows 3.0b18, and making a multimedia interface for a simple interface generated by FoxPro 2.5B, mainly to solve how to connect an interface with Author ware and Fo... Using multimedia writing tools ‘Author ware' for Windows 3.0b18, and making a multimedia interface for a simple interface generated by FoxPro 2.5B, mainly to solve how to connect an interface with Author ware and FoxPro database, namely the communication problem between two separate programs under the Windows environment and to generate the multimedia interface which is consistent with the status and requests for the management information system, namely the problem that how to establish multimedia interface design. 展开更多
关键词 DATABASE MULTIMEDIA Communication Interface Design
下载PDF
A2与开发数据库同步上报接口技术研究 被引量:1
12
作者 王桂庆 王勇 +2 位作者 刘颖鹏 高洁 段翠霞 《中国石油和化工标准与质量》 2014年第6期165-166,共2页
本文阐述了使用C#开发油气水井生产管理系统(简称A2系统)的数据同步上报接口程序、上报需求定义、从其它库提取数据等关键技术,并介绍了如何通过客户端更新需求、数据上报等。系统实现了数据同步上报A2数据库及风城油田作业区开发数据库... 本文阐述了使用C#开发油气水井生产管理系统(简称A2系统)的数据同步上报接口程序、上报需求定义、从其它库提取数据等关键技术,并介绍了如何通过客户端更新需求、数据上报等。系统实现了数据同步上报A2数据库及风城油田作业区开发数据库,由于厂级生产数据库结构与A2数据库结构及编码方式的不同,接口编程工作显得尤为重要,以满足原生产数据库应用系统数据源需求,保证原生产数据库应用系统的正常运行,不影响现场生产、地质管理、科研分析等工作的进行。 展开更多
关键词 数据管理数 据接口 同步上报 存储过程
原文传递
Discovery and implications of catenary-bead subaqueous dunes 被引量:5
13
作者 ZHENG Shu Wei CHENG He Qin +3 位作者 WU Shuai Hu LIU Gao Wei LU XueJun XU WenXiao 《Science China Earth Sciences》 SCIE EI CAS CSCD 2016年第3期495-502,共8页
Measurements of topography at the segment of bifurcation between the South Channel and North Channel in the Yangtze Estuary were conducted, and a new type of subaqueous dune was discovered. This structure, newly defin... Measurements of topography at the segment of bifurcation between the South Channel and North Channel in the Yangtze Estuary were conducted, and a new type of subaqueous dune was discovered. This structure, newly defined as a catenary-bead dune, consists of a catenary dune and its associated elliptical pit bedform. Based on this finding, the nomenclature of "morphology of dune associated with accompanying bedform" is first proposed. The measured data indicate a mean height and wavelength of 1.29 m and 31.89 m, respectively; wavelength/height ratio(L/H) of 14 to 56; and elliptical pits of mean and maximum depth 0.98 m and 1.98 m, respectively. Flow information was obtained using an Acoustic Doppler Current Profile(ADCP), and the bed material components were gathered with a bottom sampler. The results show mean flood and ebb velocities of 0.27 and 0.78 m s?1, respectively, with shorter duration of flood tide than ebb tide. The silt, very fine sand, and fine sand fractions were within the ranges 21.6–23.4%, 28.2–32.2%, and 39.7–41.6%, respectively, revealing complex bed material composition. Water depth at the study site varies from 13 to 17 m. This finding will enrich the study of dunes and provide important data for geomorphological research. Moreover, the results are significant for engineering applications to estuaries. 展开更多
关键词 Catenary-bead dune Elliptical pits Morphological nomenclature High resolution Yangtze estuary
原文传递
VirtMan:design and implementation of a fast booting system for homogeneous virtual machines in iVCE
14
作者 Zi-yang LI Yi-ming ZHANG +2 位作者 Dong-sheng LI Peng-fei ZHANG Xi-cheng LU 《Frontiers of Information Technology & Electronic Engineering》 SCIE EI CSCD 2016年第2期110-121,共12页
Internet-based virtual computing environment (iVCE) has been proposed to combine data centers and other kinds of computing resources on the Internet to provide efficient and economical services. Virtual machines (... Internet-based virtual computing environment (iVCE) has been proposed to combine data centers and other kinds of computing resources on the Internet to provide efficient and economical services. Virtual machines (VMs) have been widely used in iVCE to isolate different users/jobs and ensure trustworthiness, but traditionally VMs require a long period of time for booting, which cannot meet the requirement of iVCE's large-scale and highly dynamic applications. To address this problem, in this paper we design and implement VirtMan, a fast booting system for a large number of virtual machines in iVCE. VirtMan uses the Linux Small Computer System Interface (SCSI) target to remotely mount to the source image in a scalable hierarchy, and leverages the homogeneity of a set of VMs to transfer only necessary image data at runtime. We have implemented VirtMan both as a standalone system and for OpenStack. In our 100-server testbed, VirtMan boots up 1000 VMs (with a 15 CB image of Windows Server 2008) on 100 physical servers in less than 120 s, which is three orders of magnitude lower than current public clouds. 展开更多
关键词 Virtual machine Fast booting HOMOGENEITY Internet-based virtual computing environment (iVCE)
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部