【摘 要】
：
Strongly regular (α,β)-reguli are a class of incidence structures with given conditions which were introduced by Hamilton and Mathon. We introduce two classes of codes constructed from strongly regula
【出 处】
：
Journal of Shanghai Jiaotong University(Science)
论文部分内容阅读
Strongly regular (α,β)-reguli are a class of incidence structures with given conditions which were introduced by Hamilton and Mathon. We introduce two classes of codes constructed from strongly regular (α,β)-reguli within PG(k-1,q). The codes are relat
其他文献
Phosphorus is one of the macronutrients essential for plant growth and development. Many soils around the world are deficient in phosphate (Pi) which is the form of phosphorus that plants can absorb a
During leaf organogenesis, a critical step for normal leaf primordium initiation is the repression of the class 1 KNOTTED1- like homeobox (KNOX) genes. After leaf primordia are formed, they must estab
Ligularia virgaurea is a perennial herb that is widely distributed in the alpine meadow on the eastern Qinghai-Tibet plateau. We investigated the patterns of growth and reproduction of L. virgaurea un
Theory predicts that cosexual plants should adjust their resource investment in male and female functions according to their size if female and male fitness are differentially affected by size. Howeve
Dissimilatory Fe(Ⅲ) reduction is a universal process with irreplaceable biological and environmental importance in anoxic environments. Our knowledge about Fe(Ⅲ) reduction predominantly comes from pur
Continuous observation data collected over the whole year of 2004 on a cropland surface in Tongyu, a semi-arid area of northeastern China (44°25′N, 122°52′E), have been used to investigate the variati
1958年是著名的"大跃进"之年,也是虚报浮夸风极为严重的一年。浮夸风的一个显著标志,就是大放各种"卫星",而在粮食产量上尤为突出,从而给人们造成了粮食获得了特大丰收,农业问题由此解决的错觉,后果极为严重,留下了深刻的历史教训。
The surface acoustic wave (SAW) identification (ID)-tags have great potential for application in radio frequency identification (RFID) due to their characteristics of wireless sensing and passive oper
提出一种利用声呐图像局部信息进行图像增强的方法。该方法根据声呐图像特点,利用图像局部均值和方差将声呐图像分为目标、背景和阴影3个区域,然后分别对这3个的区域像素进行增强处理。该方法原理简单,增强效果显著,适合于工程实际应用。
One of the main aspects in computed tomography (CT) development is to make CT rapidly scan a large longitudinal volume with high z-axis resolution. The combination of helical scanning with multi-slice