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主要针对于高速公路隧道施工中的关键技术以及控制要点进行分析和研究。文章首先从潜在威胁多、隐蔽工程多以及环境恶劣三个方面分析了高速公路隧道施工的特殊性;然后从五个方面分析了高速公路隧道施工的关键技术;最后从两个方面探讨了高速公路隧道施工的控制要点。 相似文献
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1 基本概况
凤台港位于安徽凤台县城南关,地处淮河中游.港口自然岸线6.2 km,陆域面积50万m2,堆场面积5 341 m2,有起重机械4台,最大起吊能力5 t.凤台港地理位置优越,水陆交通方便,腹地内除张集、谢桥等国家统配煤矿外,还有横跨凤台、颖上两县的罗园矿区.淮南市现已开采煤的年生产能力为720万t,其中由水运中转的30万~50万t.凤台港除进出煤炭外还中转磷矿、化肥、粮食、砂石、建材等物资,港口吞吐量为40万t,其中1号码头为20万t. 相似文献
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In recent years, automatic identification of butterfly species arouses more and more attention in different areas. Because most of their larvae are pests, this research is not only meaningful for the popularization of science but also important to the agricultural production and the environment. Texture as a notable feature is widely used in digital image recognition technology; for describing the texture, an extremely effective method, graylevel co-occurrence matrix(GLCM), has been proposed and used in automatic identification systems. However,according to most of the existing works, GLCM is computed by the whole image, which likely misses some important features in local areas. To solve this problem, this paper presents a new method based on the GLCM features extruded from three image blocks, and a weight-based k-nearest neighbor(KNN) search algorithm used for classifier design. With this method, a butterfly classification system works on ten butterfly species which are hard to identify by shape features. The final identification accuracy is 98%. 相似文献
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首先回顾了江南造船与七○八所的历史成长过程和双方合作取得的辉煌成就,并通过回顾船舶科技创新的历程得到了有益的启示:(1)科技创新是一个知识不断积累,认识不断深化的过程;(2)科技创新源于文化的交流、融合;(3)科技创新必须坚持走与生产相结合的道路.期望七○八所与江南-长兴造船凝心聚力,再创美好未来. 相似文献
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