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According to research on the technologies of virtual instrument and network, a netwok virtual instrument test structure based on mixed C/S/B mode is presented in this paper. In order to solve the problem of real-time of network test, ActiveX client control and instrument testing application server is developed based on ActiveX plug-in technology. Users can login the virtual instrument test platform through the browser, submit request commands and test parameters to the Web server, control the remote equipments, and observe the real-time test data and analysis results.

[Objective] The aim was to picture choroplethic map through VB and Surfer techniques. [Method] Taking the way to depict many kinds of choroplethic map through VB and Surfer techniques as an example, methods to realize data process, system protection and programming through ActiveX control under VB 6.0 programming environment. [Result] In the development of "Hunan Modern Agricultural Meteorological Business Service Comprehensive Platform", because of different requirements, the workload was large, but picture and data was isolated by dint of ActiveX control, which improved the software efficiency. [Conclusion] The study solved the problems such as programming workload reduction, code utilization efficiency improvement and software interface.

This paper introduces the characteristics of VB and Matlab and the method to visit Matlab in VB, and combines the examples of control system showing that this method not only has good interface and is convinent to use, but also students can deepen the understanding and grasping for theory of control and can apply to other systems at the same time.

Megasite Management Tool (MMT) is planning and evaluation software for contaminated sites. Using different statistical modules, MMT produces maps which help decision makers in rehabilitating contaminated sites. The input data used by MMT is of geographic nature and exists as shapefile and raster format. As MMT is built using simple windows forms application, the objective of the study was to find a way to visualize geographic data and to allow the user to edit its attribute information. Therefore, the application requirement was to find GIS libraries which offer capabilities such as (1) map viewer with navigation tools (2) library to read/write geographic data and (3) software which allows free distribution of the developed components. A research on these requirements led to the discovery of MapWindow ActiveX components which not only offered these capabilities but also provided free and open source licensing options for redistribution. Although considerable amount of reports and publications exist on MMT, the major contribution provided by MapWindow libraries have been under played. The current study emphasises upon the contribution and advantages MapWindow ActiveX provides for incorporating GIS functionality to an already existing application. Similar components for other languages have also been reviewed.

Magnetometers-aided MINS could solve roll angle measurement of air vehicle at fast spinning rate, but magnetometers were easily disturbed and had measuring error, so it was necessary to establish tri-axial magnetometer correction system for magnetometers-aided MINS navigation system. Based on LabWindows/CVI and MATLAB fuzzy programming, earth magnetic field and ellipsoid fitting model were built to complete magnetometers correction system and its virtual instrument. On that basic, magnetometers-aided MINS navigation system and its virtual instrument were established. Results of correction and non-correction magnetometers-aided MINS navigation test showed that the magnetometers correction system can compensate the error of interference, measuring and so on, furthermore geomagnetic attitude computing become more accurate and the higher precision of position and velocity for magnetometers-aided MINS system. All of them are significant for engineering and products.

This paper studies a new approach to developing AutoCAD in MFC with ActiveX Automation technology. It successfully solved the problem that development visions of Object ARX are not correspondent. It analyzed the application of dispatch interface in IDispatch technology and VARIANT type data in depth. In addition, it gave out practical cases in which this approach is used and particularly discussed the method for using blocks and searching through diagram objects. This designing realized the automatic designing of engineering drawing and automatic extracting of information.

Based on conduction, convection and radiation heat transfer among the flue gas, kiln wall, and the pellet bed material, and on the basis of the coal combustion and analysis of reaction heat of pellet induration in the rotary kiln, the temperature field model of rotary kiln was established. Using visual studio net, matlab and open source computer vision library as development tools, combining with the ActiveX data objects database technology, the temperature field simulation system for rotary kiln of iron ore oxidized pellet production was developed. Temperature distribution of pellet and flue gas in rotary kiln was dynamically displayed.

Language Integrated Query (LINQ), as well as the C# 3.0 and VB 9.0 language extensions to support it, is the most import single new feature of Visual Studio 2008 and the .NET Framework 3.x. LINQ is Microsoft's first attempt to define a universal query language for a diverse set of in-memory collections of generic objects, entities persisted in relational database tables, and element and attributes of XML documents or fragments, as well as a wide variety of other data types, such as RSS and Atom syndication feeds. Microsoft invested millions of dollars in Anders Hejlsberg and his C# design and development groups to add new features to C# 3.0-such as lambda expressions, anonymous types, and extension methods-specifically to support LINQ Standard Query Operators (SQOs) and query expressions as a part of the language itself. Corresponding additions to VB 9.0 followed the C# team's lead, but VB's implementation of LINQ to XML offers a remarkable new addition to the language: XML literals. VB's LINQ to XML implementation includes XML literals, which treat well-formed XML documents or fragments as part of the VB language, rather than requiring translation of element and attribute names and values from strings to XML DOM nodes and values. This book concentrates on hands-on development of practical Windows and Web applications that demonstrate C# and VB programming techniques to bring you up to speed on LINQ technologies. The first half of the book covers LINQ Standard Query Operators (SQOs) and the concrete implementations of LINQ for querying collections that implement generic IEnumerable, IQueryable, or both interfaces. The second half is devoted to the ADO.NET Entity Framework, Entity Data Model, Entity SQL (eSQL) and LINQ to Entities. Most code examples emulate real-world data sources, such as the Northwind sample database running on SQL Server 2005 or 2008 Express Edition, and collections derived from its tables. Code examples are C# and VB Windows form or Web site/application projects not, except in the first chapter, simple command-line projects. You can't gain a feel for the behavior or performance of LINQ queries with \"Hello World\" projects that process arrays of a few integers or a few first and last names. This book is intended for experienced .NET developers using C# or VB who want to gain the maximum advantage from the query-processing capabilities of LINQ implementations in Visual Studio 2008-LINQ to Objects, LINQ to SQL, LINQ to DataSets, and LINQ to XML-as well as the object/relational mapping (O/RM) features of VS 2008 SP1's Entity Framework/Entity Data Model and LINQ to Entities and the increasing number of open-source LINQ implementations by third-party developers. Basic familiarity with generics and other language features introduced by .NET 2.0, the Visual Studio integrated development environment (IDE), and relational database management systems (RDBMSs), especially Microsoft SQL Server 200x, is assumed. Experience with SQL Server's Transact-SQL (T-SQL) query language and stored procedures will be helpful but is not required. Proficiency with VS 2005, .NET 2.0, C# 2.0, or VB 8.0 will aid your initial understanding of the book's C# 3.0 or VB 9.0 code samples but isn't a prerequisite. Microsoft's .NET code samples are primarily written in C#. All code samples in this book's chapters and sample projects have C# and VB versions unless they're written in T-SQL or JavaScript. Professional ADO.NET 3.5: LINQ and the Entity Framework concentrates on programming the System.Linq and System.Linq.Expressions namespaces for LINQ to Objects, System.Data.Linq for LINQ to SQL, System.Data.Linq for LINQ to DataSet, System.Xml.Linq for LINQ to XML, and System.Data.Entity and System.Web.Entity for EF's Entity SQL. \"Taking a New Approach to Data Access.

In order to get better effect to control the controlled object with uncertainty, non-linear and Multiple variables in the network environment,we designed the Network Control System in this paper which is based on Interface Programming between Matlab and VB.By using the Winsock of VB in network environment, the data can communicate between control system and controlled object under TCP-IP protocol,the data communication which is between VB and Matlab is depended on ActiveX in control system. In this paper,we take a linear inverted pendulum experiment with linear quadratic optimal level control for example in a network environment. the results show that the system can be stable and reliable on real-time object inverted pendulum control,The system has a certain reference value for factory equipment real-time data transferring and monitoring.