Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2021-02-26
Abstract: In this paper, we make an analogy with ideal gas and vacuum. Under this analogy, the inertial mass of the particle comes from its drift mass, and the mass-energy and mass-velocity relations of special relativity are obtained under some hypotheses. Then, we use mass relation to reproduce time dilation, length contraction and Lorentz transformation which are the conclusions of special relativity.
Peer Review Status:Awaiting Review
Subjects: Geosciences >> Other Disciplines of Geosciences submitted time 2019-09-09 Cooperative journals: 《干旱区研究》
Abstract: 利用青海湖流域小泊湖湿地和瓦颜山湿地的气象观测资料,分析了湿地小气候特征。结果表明:青海湖流域是太阳辐射较强的区域,反射辐射最大值出现在4月,总辐射、大气长波辐射、地面长波辐射、净辐射和土壤热通量均表现为夏季高、冬季低。瓦颜山湿地年平均地表反照率为0.26,夏季平均地表反照率为0.2,低于隆宝湿地、西大滩和五道梁。瓦颜山和小泊湖站比湿最大值出现在夏季,最小值出现在冬季,降水主要集中在5—9月,占全年降水量的90%以上。2站气温和5 cm地温最高值出现在8月,最低值出现在1月,受湖陆热力性质差异的影响,小泊湖站全年白天盛行西风和偏西风,夜晚盛行东风;瓦颜山站则受地形影响,全年盛行西南风。
Subjects: Computer Science >> Natural Language Understanding and Machine Translation submitted time 2017-03-10
Abstract:本文提出一种基于判别式模型的藏文分词方法,并研究了藏文分词在藏汉机器翻译中的应用。根据藏文构词特性,通过最小构词粒度切分、感知机解码和分词结果重排序三个模块,显著提升了藏文分词质量。在此基础上,我们还提出了基于词图的藏汉机器翻译方法,缓解了分词错误在翻译中的传播,可以使翻译质量明显提高。
Peer Review Status:Awaiting Review