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Search Results: 1 - 10 of 213728 matches for " 刘露 "
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黎曼流形中完备极小超曲面的端
The End of a Complete Minimal Hypersurface in Riemannian Manifold
 [PDF]

, 陈抚良
Pure Mathematics (PM) , 2013, DOI: 10.12677/PM.2013.36057
Abstract:
本文研究了黎曼流形中完备非紧致非全测地极小超曲面的端。在一定的条件下,我们得出这种超曲面只有一个端。
In this paper, we study the end of a complete noncompact non-totally geodesic minimal hypersurface. Under certain conditions, we obtain that the hypersurface has only one end.
我国知识产权的未来发展态势及发展路径研究

科技进步与对策 , 2011,
Abstract: 对我国知识产权"十二五"发展总体形势进行了判断,认为我国未来仍将处于后起发展国行列,由战略防御向战术进攻转变,是知识产权大国但还不是知识产权强国;仍需加大对知识产权的战略投入;并据此提出了"十二五"时期我国知识产权发展的四大定位,探讨了未来发展的六大路径,以实现知识产权发展的六大转变。知识产权发展阶段发展路径十二五
鲐鱼不同部位的营养评价及风味物质分析

- , 2016, DOI: 10.13982/j.mfst.1673-9078.2016.4.033
Abstract: 本文以鲐鱼为研究对象,分析了鲐鱼不同部位(背肉、腹肉及尾肉)的基本成分、总氨基酸组成及脂肪酸组成,并对其营养价值和风味物质进行了分析。研究表明:不同部位中腹肉脂肪含量最高,为4.2%,背肉含量最少;尾肉蛋白质含量最低,仅为71.26%。总氨基酸组成差异不显著,其中各部位含量最高的氨基酸都为谷氨酸,含量达2.68 g/100 g。背肉中脂肪酸种类最多33种,尾肉最少为26种,各部位中DHA和EPA含量都很高。电子鼻结果表明三个部位的挥发性成分存在差异。背肉中检测出挥发性成分31种,腹肉、尾肉分别为32种和25种;背肉与腹肉中的游离氨基酸含量差异不显著,但和尾肉差异显著。背肉中核苷酸总量显著高于其他2个部位;三个部位都是IMP含量最高,分别为452.71、441.33、448.26 mg/100 g。研究结果将对鲐鱼肉的分类加工及深加工提供一定的参考价值。
Mackerel was used as the object of this study. The essential components, total amino acid composition, fatty acid composition, nutritive value, and flavor substances of different parts of the fish (dorsal, ventral, and tail muscles) were determined. The results showed that among the parts examined, the highest fat content was seen in ventral muscle (4.2%), and the lowest fat content was seen in dorsal muscle. Tail muscle had the lowest protein content (71.26%). Differences in overall amino acid composition were not significant, and glutamate content was the most abundant amino acid, reaching 268 mg/100 g. The largest and the smallest number of different types of fatty acids were found in the dorsal muscle (33 types) and tail muscle (26 types), respectively, and high DHA and EPA concentrations were found in each part. The electronic nose showed differences in the volatile components of the three parts. There were 31, 32, and 25 kinds of volatile components detected in the dorsal, ventral, and tail muscles, respectively. The free amino acid content of dorsal and ventral muscles were similar, but were significantly different from that of tail muscle. The content of nucleotides in the dorsal muscle was higher than that in the other two parts. Inosine monophosphate (IMP) was the most abundant nucleotide found in the mackerel parts, and the content were 452.71, 441.33, and 448.26 mg/100 g, in the dorsal, ventral, and tail muscles, respectively. These results will provide some reference values for sorting and deep processing of mackerel.
青海东部干旱发生规律及其变化趋势
杨芳,
干旱区研究 , 2012,
Abstract: 通过对青海东部地区干旱状况的调查,结合气候变化,分析该地区的干旱特点、形成原因、时空分布及干旱的成灾和危害程度。结果表明受全球变暖的影响,青海省东部地区自20世纪70年代以来,气温持续升高,降水量没有显著增加,河川径流略有减少,导致该地区干旱频繁发生,并且在今后一段时期内,干旱形势难以缓解。由此引发的地质灾害和农业生物灾害等会给该地区带来一系列环境问题。
带插值最小二乘法在打印机色域边界描述中的应用研究
,
包装工程 , 2013,
Abstract: 目前色域映射多在二维色相平面上进行,色域描述相应地转换为色调剖面上的边界线描述。 通过分析打印机色调剖面边界形状,结合考虑色域映射的精度和效率问题,提出了运用带插值条件的最小二乘模型分段拟合打印机色域边界。 实验结果表明:该技术的运用可以确保打印机色域边界的连续性,同时拟合效果也与分段线性插值方法很接近,从而保证了色域映射的精度,其最大的优势是提高了色域映射的效率,使色域映射的实施更加简单。
从我国高等教育改革的趋势谈教材策划与出版的应变之策

科技与出版 , 2010,
Abstract: 随着我国高等教育改革的不断加大,教材的策划出版也必须随之发生变化。对于面向应用型高校教材的组织与编写,笔者提出了几条建议。
贵州省林业发展现状与现代林业建设对策

农业现代化研究 , 2012,
Abstract: 本文从林业资源、林业生态、林业产业、林业保障体系,分析了贵州省林业发展现状;指出了贵州省在森林资源分布、林业总产值和产业结构、林业资金投入方面存在的问题。提出了贵州现代林业发展应科学规划全省林业布局、大力发展林业产业、建立多元化的林业投资体系的对策。
基于车辆感知的信号交叉口配时优化
The Optimal Timing Plan of Traffic Signal Based on Vehicle Detection
 [PDF]

, 赵康嘉, 陈淑燕
Open Journal of Transportation Technologies (OJTT) , 2013, DOI: 10.12677/OJTT.2013.21012
Abstract:
文章针对具有明显潮汐性、进口道之间流量悬殊信号交叉口在各个状态下的信号配时方案进行优化。通过车辆感知技术,实现车辆与交通信号系统之间的信息交换,将交叉口的流量分情况讨论,针对不同的车辆到达情况采用实时的信号灯配时,以提高通行效率,节能环保。此外,利用java语言验证了逻辑上的可行性,利用VISSIM仿真模拟分析典型案例后,证明了方案及模型的精度和控制效果。
This paper illustrates an optimal timing plan for a specific intersection, the volumes of whose approaches vary largely and have periodic changes. The purpose of the plan is to enhance the information exchange between vehicles and traffic signals, and use the real-time signal plan with regarding to the different conditions of the arrivals, in order to increase the efficiency of the operation and reduce the energy consumption. To test the practical utility and feasibility of the plan, the paper offers the data from the experiment of a representative intersection, during which we do the reconnaissance and simulation by VISSIM, and programming with java.
贵州省道真县沙河林区银杉的调查研究
徐友源,
植物生态学报 , 1983,
Abstract: 本文通过对贵州道真县沙河林区的稀有珍贵树种——银杉的调查,研究了银杉的生境,群落组成及生物学特性,提出了适当控制林木密度,清除部分枯枝落叶等地被物可以加速它的天然更新及正常生长。
Registration of Heart FMRI Time-Series Images and the Hybrid Optimization Algorithm
心脏磁共振时间序列图像配准及混合优化算法

,张小锋
计算机系统应用 , 2009,
Abstract: 由于光系统的焦深是有限的,由心脏非平面运动和曲面弧度造成的大多数误差是有限的,因此首先建立心脏的准刚体模型,以互信息作为相似性测度迭代搜索,利用主轴矩方法粗配准,再采用powell和SA优化算法相结合的混合优化算法进行细配准。试验结果表面不仅能够达到亚像素精度,而且能有效防止陷入局部极值。
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