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35kV交流汇集是目前海上风电场集电系统的通用集电方案。随着对海上风场单位成本降低的追求和技术的发展，海上风机单机容量越来越大。然而，由于35kV海底电缆热极限和通流能力的限制，单机容量的增大使得单根海缆上可连接的风机数目随之减少。随着海上风电场规模的扩大和单机容量的增加，如果仍采用35kV交流集电方案，海底电缆的数目势必增加，电缆投资及相应工程费用和难度也将增大。据此，提出了66kV交流集电方案，并基于一组典型案例，对35kV和66kV海上风电交流集电方案进行了技术经济性比对。进一步结合未来海上风电的发展趋势讨论了66kV海上风电集电方案的适用性。

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Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Tibetan traditional architecture is the artistic treasure of Chinese cultural heritage. 3D reconstruction provides a way for the protection and restoration of these excellent historical relics. Potala Palace is a unique castle-style building in Tibet, it is complex in structure and unique in shape. It is difficult to use a single data source to accurately restore its 3D model. In this paper, a method of 3D reconstruction based on multi-source data is proposed. According to the different parts, characteristics and accuracy requirements of ancient buildings, a method combining multiple data sources and multiple technologies is used to establiush the model. The results show that the 3D model has high fidelity and good effect. It provides an important basis for the 3D model resources of digital tourism, the digital archiving of ancient castle-style buildings and the later repair work. [ABSTRACT FROM AUTHOR]

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In order to keep up with the pace of the construction of the university informatization and the digital campus, design and the virtual campus roaming system . are designed realized with the 3D laser scanning technology and VR-Platforrn, three dimensional laser scanning technology are used tocollect the main constructions points of the campus, and 3ds Max is used to establish three-dimensional model of the campus building. Intercepting the campus map from the satellite map as background the authors make the campus terrain, roads and other auxiliary facilities, trees, flowers and plants of 3d model, and merge and simplify those 3d models. After texture mapping, lighting arrangmant, baking and so on,then the model is imported into VR-Platform; As design navigation map, we set up multiple camera, collision detection, add bone role, embed multimedia; Users can also click on the keyboard, mouse and distance to view the campus introduction and so on, hence human-computer interactive control of virtual scene is realized. Experiment result showed : the virtual campus scene is realistic and immersive, Users can freely roam from multiple angles. This system can play a certain role in campus emergencies. [ABSTRACT FROM AUTHOR]

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： In this paper , the 3D laser scanning technology is used to obtain the interior point cloud of museum. And on this basis, 3dS Max is used to establish a 3-dimensional model of the museum to complete texture mapping, baking and so on. Then the model is imported into VRP to develop an interactive virtual museum system. Cultural relics are collected and scaned by using hand-held non-contact 3d laser scanner, and then processed. The true 3-dimensional digital cultural relic model is then established. In order to ensure the efficiency and effectiveness, the LOD algorithm is used to simplify the model. In virtual roaming scene designed by us, user can observe personally on the scene from multiple perspectives, can also watch the cultural relics through the keyboard, mouse and distance trigger. Artificially interactive computer control of virtual scene is realized. System interaction is good, holds strong sense of immersion， multi angle, multi way, multi person autonomous roaming Museum, collection of cultural relics can be observed at close range. [ABSTRACT FROM AUTHOR]

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Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Tibet is located in the remote, it is shortage of animation design and production talents. The phenomenon provides a broad development prospect for the course of "3dsMax-three dimensional animation design and production" in Tibetan colleges and universities. Tibetan students have unique physical and mental characteristics. Through studying the characteristics of Tibetan students, we develop suitable teaching mode by introducing the CDIO engineering education concept to the teaching. The route of CBE teaching model and the route of German M dual system" outstanding teaching modes are also introduced in teaching reform to enhance the students practical ability and shorten the distance of social position. We form a set of integrating teaching mode, train "quality, staying down, and working in basic level" Tibetan local animation talents. [ABSTRACT FROM AUTHOR]

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A superior ultraviolet image converter tube made of Ⅲ-nitride semiconductor material was developed for missile approach warning (MAW) system. The Al mole fraction, film thickness and P-type doping level parameters which have the effects on the photoelectric emission performance of photocathode were determined. High resolution X ray diffractometer and ultraviolet spectrometer are used to analyze the structural and optical characteristics of photocathode. A relative flat and high quantum efficiency with small fluctuation in the wavelength range from 220 nm to 270 nm is obtained, the radiation sensitivity is 39.7 mA/W at 266 nm wavelength, and the spectral response begins to fall from 270 nm wavelength. According to the spectral radiation sensitivity and detectable distance model based on signal-to-noise ratio, MODTRAN atmosphere transmittance simulation software is used to calculate the operating range of MAW system with image converter tube by means of iteration solution. The calculated result shows that the operating range of MAW system can be up to 7.1 km. [ABSTRACT FROM AUTHOR]