This paper describes the Realization of ASP.net technology on Engineering Machinery Service (EMS) platform, based on environment of Visual Studio 2005. The EMS platform is designed to keep the accuracy of users’ information when registering as well as to filter malicious users who register with fictitious information. During the register process, EMS platform realizes the validation function of Email address which can provide better protection for the website and also inform users of precise information.
New techniques to efficiently increase the frequency resolution of digital sinusoidal oscillators based on look-up-table (LUT) methods are proposed. The increase in frequency resolution is achieved while maintaining very low level of spurious harmonic distortion. The proposed techniques increase the LUT length to a level at which the spurious harmonic distortion is negligible. The first proposed technique is based on partitioning the address register into three sets and dividing the available LUT length into three smaller tables addressed according to the content of the address register sets. The second proposed technique utilizes one LUT and interpolates the values of the samples that are not stored in the table. The third proposed technique is similar to the first technique with the advantage of simpler implementation and lower levels of spurious harmonic distortion. The proposed techniques are simulated and their performance is compared with that of the direct LUT and trigonometric interpolation methods. The simulation results show that the proposed techniques are superior to both direct LUT and trigonometric interpolation methods.
Address register is one of the basic and most commonly used spatial data
records. One of its uses is finding addresses in location-based services (geocoding),
which for the specified address (city, street, number) return the
position in the form of coordinates. The paper presents a comparison of
two services: ULA (Usługa Lokalizacji Adresów from Geo-System) and
OpenLS (available as a part of the Polish national geoportal). The analysis
includes both theoretical aspects (amount of data in the resource, its timeliness,
documentation, request and response formats), as well as practical
- in the form of testing the performance and accuracy of both services.
Stakeholder analysis of the governance framework of a national SDI dataset – whose needs are met in the buildings and address register of the Netherlands?
