期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
利用辅助性状提高半同胞测验的准确度
1
作者 陈进卿 刘德金 《福建农业大学学报》 CSCD 1995年第1期121-125,共5页
利用公畜半同胞个体包括主性状在内的若干个相关性状的表型值构造一个公畜指数,并导出利用该指数对公畜主性状进行选择的准确度.证明采用辅助性状时,半同胞测验的准确度总是高于未采用辅助性状时的准确度.数值计算结果表明,当各辅... 利用公畜半同胞个体包括主性状在内的若干个相关性状的表型值构造一个公畜指数,并导出利用该指数对公畜主性状进行选择的准确度.证明采用辅助性状时,半同胞测验的准确度总是高于未采用辅助性状时的准确度.数值计算结果表明,当各辅助性状和主性状的表型和遗传相关符号相反时,辅助性状的使用对选择准确度的提高最为显著.当辅助性状只有一个时,还导出一个计算给定准确度下每一公畜所需度量的半同胞个体数的公式.最后在一些简化条件下讨论辅助性状数目对选择准确度提高的影响. 展开更多
关键词 公畜 主性状 辅助性状 半同胞测验 选择准确度
下载PDF
New method of improving parts accuracy by adding heat balance support in selective laser sintering
2
作者 Bing LIU Li-chao ZHANG +1 位作者 Jian-hua MO Bo QIAN 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2009年第3期361-369,共9页
In order to improve parts accuracy, a method of adding heat balance support (HBS) was proposed, and the detailed algorithm for generating HBS was developed. A number of experiments and a comparison between similar s... In order to improve parts accuracy, a method of adding heat balance support (HBS) was proposed, and the detailed algorithm for generating HBS was developed. A number of experiments and a comparison between similar softwares, showed that the algorithm is efficient and feasible. Moreover, different features of riBS were studied for different kinds of materials, such as PS and nylon. The research findings indicate that automatically adding HBS can significantly improve the accuracy of the parts, and that the algorithm for generating HBS is efficient and precise. 展开更多
关键词 Selective laser sintering (SLS) ACCURACY Heat balance support (HBS) Triangular facet 3D rings
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部