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基于无线网络技术实现LKJ车载数据的换装 被引量:6
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作者 刘晓虎 《铁路计算机应用》 2012年第7期52-54,共3页
本文对LKJ车载数据换装现状进行分析,论述了基于无线网络技术,对车载数据进行模块化和顺序化设计,实现车载数据的自动换装,解决传统模式下数据换装中存在的资源高消耗问题,提高数据换装的安全性、可靠性和高效性。
关键词 LKJ 无线网络 数据环状 设计
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新型肿瘤靶标环状RNA的研究进展 被引量:15
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作者 徐昊 方梦蝶 +3 位作者 李超 刘宸 任娟 张衍梅 《中国医学科学院学报》 CAS CSCD 北大核心 2021年第3期435-444,共10页
环状RNA(circRNA)是内源非编码性RNA,多数circRNA被发现可通过发挥微小RNA(miRNA)海绵功能来调控基因表达,此外某些circRNA也会被翻译或与RNA结合蛋白互作发挥作用。circRNA广泛表达于组织和体液中,其表达量的改变与肿瘤的发生发展相关... 环状RNA(circRNA)是内源非编码性RNA,多数circRNA被发现可通过发挥微小RNA(miRNA)海绵功能来调控基因表达,此外某些circRNA也会被翻译或与RNA结合蛋白互作发挥作用。circRNA广泛表达于组织和体液中,其表达量的改变与肿瘤的发生发展相关。circRNA的环化特性使其对核糖核酸酶R(RNase R)稳定而不易降解。由于circRNA稳定、种类丰富、可特异性调控肿瘤发生、在体液中高表达,因此有望成为肿瘤相关的诊断、预后和治疗靶标。目前对circRNA的认识相对较少,其发生机制和功能尚未完全解析,circRNA的注释也有待充实。本文总结了circRNA的发生机制、生物学功能和在肿瘤研究中的重要应用。 展开更多
关键词 环状RNA 肿瘤标志物 环状RNA数据 反向重复序列 反向剪接
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SDH环状数据网中的集成自愈策略 被引量:2
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作者 汪卫章 伍翔 +1 位作者 葛宁 冯重熙 《清华大学学报(自然科学版)》 EI CAS CSCD 北大核心 2002年第7期993-996,共4页
在多层次网络结构 (例如 IP over SDH)中 ,对业务的保护切换技术不仅仅在某一层中实现 ,而是在几层都提供了保护功能。目前同步数字体系 (SDH)层自愈算法都是为电路业务设计 ,具有保护切换速度快 (≤ 5 0 m s)的优点 ,但资源利用率低 (... 在多层次网络结构 (例如 IP over SDH)中 ,对业务的保护切换技术不仅仅在某一层中实现 ,而是在几层都提供了保护功能。目前同步数字体系 (SDH)层自愈算法都是为电路业务设计 ,具有保护切换速度快 (≤ 5 0 m s)的优点 ,但资源利用率低 (≤ 5 0 % )。IP层的保护策略是为数据业务设计 ,资源利用率高 (≈ 10 0 % ) ,但切换速度慢 (>5 0 m s)。文中提出一种新的集成自愈策略 ISH,结合 SDH层的自愈操作来传输保护信令 ,通过 IP层的网络算法来提高链路利用率 ,从而具有与 SDH自愈类似的保护切换速度 ,在业务均匀分布时显著提高了链路利用率。论文并对 ISH的网络容量与排队时延进行了分析和仿真。 展开更多
关键词 SDH环状数据 集成自愈策略 同步数字体系 自愈环 切换速度 路由保护 保护机制 自动保护倒换
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Variation in the timing of river entry of Atlantic salmon (Salmo salar L.) in the Baltic
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作者 Anna KUPARINEN Juha MERIL 《Current Zoology》 SCIE CAS CSCD 北大核心 2009年第5期342-349,共8页
The timing of river entry in the Atlantic salmon is known to depend on genetic, demographic and environmental factors, but little is known about the relative magnitude of among population and among year variation and ... The timing of river entry in the Atlantic salmon is known to depend on genetic, demographic and environmental factors, but little is known about the relative magnitude of among population and among year variation and covariation in this respect in natural state Atlantic salmon rives. To investigate this, variability in the timing of river entry in three historical Finnish Atlantic salmon populations were analyzed using salmon trap data collected during 1870- 1902. The analyses reveled that 1 ) the timing of river entry differed substantially and consistently among the rivers, and that 2) variation among the rivers was much larger than variation among years. Annual variations were not explained by regional environmental conditions, whereas in one river the timing of the local flood peak was a significant predictor of the timing of river entry. Differences in the timing of salmon entry to geographically closely situated rivers suggests that a regionally fixed opening date for coastal fisheries might not be the best management strategy as it may lead to uneven exploitation of salmon populations from different rivers [ Current Zoology 55 (5) : 342 - 349, 2009] . 展开更多
关键词 Atlantic salmon Coastal fisheries Fisheries management Freshwater entry Migration River entry
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Motion and Deformation State of the Tancheng-Lujiang Fault Zone Derived from GPS Data
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作者 Liu Xiaoxia Jiang Zaisen Wu Yanqiang 《Earthquake Research in China》 2013年第2期154-164,共11页
Based on the rotation in the entire block and homogeneous strain model ( REHSM) ,we firstly analyze the motion and deformation features across the southern part of Tancheng- Lujiang fault zone from GPS velocity fields... Based on the rotation in the entire block and homogeneous strain model ( REHSM) ,we firstly analyze the motion and deformation features across the southern part of Tancheng- Lujiang fault zone from GPS velocity fields in period of 1999 ~ 2001,2001 ~ 2004,2004 ~ 2007 and 2007 ~ 2009. The results show a dextral strike-slip feature in the Weifang- Tancheng segment and sinistral strike-slip in the Tancheng-Lujiang segment. And the deformation perpendicular to the Tancheng-Lujiang fault zone alternates between tension and compression in different time-intervals. Then we resolve the relative rigid motion of blocks around Bohai Bay to the Circum-Bohai Sea area by deducting the entire rigid motion of the Circum-Bohai Sea area. We find that the Yanshan-Bohai seismic belt split this area into two parts,the northern part moving NW,and the other SE. 展开更多
关键词 GPS Tancheng-Lujiang fault zone Boundary zone REHSM
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