The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Virtual reaLity technology is one of new technologies involving multitudinous knowledge. Based on the virtual reaLity, the construction of complex three dimension (3D) CAD model and the way of reading are introduced. Taken VIRTOOLS as the platform, the processing of complex model and the dynamic interaction of the whole model with virtual environment are elaborated. With the example, the reaLization...
The paper puts forward a DEM design software employing OpenGL as back end display software, for improving the seed metering design precision in agriculture production, introducing the basic principle and modeling method of OpenGL. In the end, a practice design of precision seed-metering device is cited as an example for proving this method to be in effect.
In this study, the detection of metal objects concealed under clothes is investigated through millimeter-wave inverse synthetic aperture radar (ISAR) imaging. A metallic gun is selected as the target and W-band ISAR measurements for a two-dimensional scanning geometry are carried out in our anechoic chamber measurement facility. The ISAR images of concealed object are reconstructed using the near-field...
This paper reports a study on 3D topography and tomography visualization of materials with micro and nano features. SEM stereo imaging technique is employed to characterize surfaces by reconstruction. With this technique, diatomaceous frustules and sputtering yield of metals were analyzed. X-ray nanotomography (nCT) is used for characterization of a polymer electrolyte fuel cell (PEFC) gas diffusion...
In this paper, text orientation which affects to OCR output error together with corresponding correction technique was examined. In case of text oriented in 3D or tilted manner, conventional anti-skew technique such as Hough or Radon transform could fail and a technique of Projective transform is proposed. To illustrate the effectiveness of the technique, Arial and OCR-A extended font types had been...
Loess located in Xi'an were collected. 13 schemes which in different reinforced layers were designed to study the effect of all-round pressure, reinforced layers, reinforced location and layer spacing by traixial tests under 4 kinds of all-round pressure. Through the comparison of normalization strength, it is shown that the principal stress difference decrease along with increase of reinforced layers...
To extract polysaccharide of Camellia Cake, cellulase-assist method was used. The extraction conditions were: temperature 50°C; time 3h; adding amount of cellulase 0.35%. The extract rate of camellia cakes polysaccharide is 26.62%, The adequacy of this model was confirmed.
There exist plenty of pipe drawings of the design and production in chemical enterprises. Some problems related to 3D pipe design were studied in the paper. It involved 3D pipe reconstruction based on 2D pipe drawings and 3D pipe modeling based on parametric technique. Coordinate transformation, recognizing and matching of pipe segments, 3D parametric design were researched. The conditions to determine...
Digital information technology could integrate all aspects of information about architectural heritage and establish a historic building digital file that includes date, text, image, 3D model and other type. It is convenient to the daily virtual preserve and protect of architectural heritage. This paper presents that in a short time, less labor and low-cost operating condition, utilizing laser range...
Significant research has been performed in developing wafer-level metal/adhesive hybrid bonding technology by investigating bonding temperature optimization of SU-8 materials. The SU-8 wafers experience bonding failure when bonding temperature exceeds 275°C. As a result of the significant decomposition of epoxy rings and phenyl in plane bending above 275°C, Fourier Transform IR (FTIR) spectra measurements...
A diffusion behavior was observed for co-sputtered metals during thermal treatment, while these metals were fabricated as bonding mediums in 3D IC applications. This paper reports and discusses the mechanical behavior of co-sputtering metals before and after annealing. In addition, co-sputtering metal bonding seems to be an option for bonding technology based on their excellent bonding results.
Wii Remote is the standard controller of the game console Nintendo Wii®. Despite its low cost, it has a very high performance and high resolution infrared camera. It also has a built-in chip for tracking up to 4 points from the infrared images. With these properties, the Wii Remote has attracted several attempts to calibrate and use them for metric 3D information. Thanks to Wii Remote's 4 point tracking...
This paper discusses a tremendous change on the mode of computer application in the most industrial product design in China from computer-assisted mapping to computer aid design (CAD) with no paper, reviewing the development of the CAID and analyzing the status quo of the computer application mode. Combining the systematic process of industrial design, it researches into methods and process of the...
Because of its simple structure, high density and good scalability, resistive random access memory (RRAM) is expected to be a promising candidate to substitute traditional data storage devices, e.g., hard-disk drive (HDD). In a conventional three-dimensional (3D) bipolar RRAM design, an isolation layer is inserted between two adjacent memory layers. The fabrication of the isolation layer introduces...
Experiments were carried out to study the process of sulphur dioxide capture with cement raw meals, and effects of sulphur evaporation (i.e. the captured sulphur in the raw meal evaporates into SO2 at a calcination temperature) on the efficiency such a process. In the study, four samples of raw meals with various ingredients were prepared; with a combined application of DSC-TGA-FTIR, the amount /degree...
Many mathematics teachers produce original course materials with figures because their use enables students to comprehend mathematical objects. This paper presents a model for producing effective figures for use in course materials. LaTeX is often used to edit course materials and they often use computer algebra system (CAS) to insert graphical image files into the materials. We developed KETpic as...
In material handing operations, raw materials are often stacked in a number of layers and subsequently reclaimed by benches. The quality grade may be different between layers. Also, the blending effect happens simultaneously with the stacking and reclaiming operations, how to meet the target grade required by the customers while lowering operation costs are rising academic concerns. By acquiring the...
The tasks of region or object segmentation and environment change detection in a 3D context are investigated and tested on an autonomous skid steer loader. This is achieved through a technique analogous to background subtraction utilising 3D scan data which is first aligned before a voxel subtraction operation against a prior map. We highlight the close relationships between the scan-to-map alignment,...
Augmented Reality (AR) is a branch of Virtual Reality (VR). With the development of this novel technology, the applications of the AR based education are attracting more and more attention. This paper points out the significance of AR-based experiment in education and illustrates the applications and effectiveness of AR-based experiment. We hope this can become a hint for the educators and researcher...
One of the most significant challenges of the knowledge-based information society is how to reach, acquire and take in the ever expanding knowledge volume effectively. Parallel with the proliferation of the internet study support learning management systems have also been developed and introduced. With the improvement of internet-technologies and the spreading of web 2.0 virtual 3D-based systems have...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.