oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 203 )

2018 ( 2222 )

2017 ( 2110 )

2016 ( 2092 )

Custom range...

Search Results: 1 - 10 of 126981 matches for " LI Yueqing "
All listed articles are free for downloading (OA Articles)
Page 1 /126981
Display every page Item
Effect of the Flipped Classroom Model on Chinese Non-English-Majored College Students’ Translation Skills  [PDF]
Yougen Lou, Yueqing Du, Zejuan Li, Pin Gong, Yangmei Li
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.54024
Abstract: This paper reviewed a one-term experiment on the flipped classroom model in teaching translation skills to 124 first-year non-English-majored undergraduate students from Yangtze University as participants. Participants in this study consisted of 62 non-English-majored undergraduate students in the control group (CG) and 62 non-English-majored undergraduate students in the treatment group (TG). The process of the flipped classroom model in translation teaching and learning was divided into the three parts: outside of the flipped classroom, inside of the flipped classroom and outside of the flipped classroom. The results showed that: 1) compared with a teacher-dominated approach for CG, the flipped classroom translation model instruction for TG did a better job in enhancing students’ translation skills; 2) there were significant differences between males in CG and TG, and females in CG and EG; 3) students in TG held the positive response for the flipped classroom model in translation teaching and learning.
青藏高原地面加热及上空环流场与东侧旱涝预测的关系
李跃清 Li Yueqing
大气科学 , 2003, DOI: 10.3878/j.issn.1006-9895.2003.01.10
Abstract: 应用奇异值分解(SVD)技术研究了青藏高原地面加热场与高原上空100hPa高度场及其东侧川渝地区夏季降水场的时空联系和旱涝预测的关系.结果表明:地面加热场与高度场的第一模态代表了两场间的主要耦合特征,具有高度的时空相关;前期青藏高原地面加热场通过影响后期高原上空100hPa高度场,导致未来高原东侧川渝地区夏季降水异常;加热场-高度场-降水场之间的这种非同步关系,反映了川渝地区旱涝灾害的影响因子和物理成因;前期高原地面加热场与前期100hPa高度场SVD第一模态的变化,是高原东侧地区未来夏季旱涝异常的预测信号.并由此提出了一种基于SVD技术的旱涝预测思路.
青藏高原上空环流变化与其东侧旱涝异常分析
李跃清 Li Yueqing
大气科学 , 2000, DOI: 10.3878/j.issn.1006-9895.2000.04.04
Abstract: 应用奇异值分解(SVD)技术研究了青藏高原上空100hPa高度场与高原东侧地区夏季降水场的时空结构及相互关系。结果表明:第一模态代表了两场间的主要耦合特征,具有高度的时空相关;前期10~12月、1~4月青藏高原上空100hPa高度场与高原东侧地区6~8月降水场具有显著的联系,前期高度场变化引起后期南亚高压状况异常,导致高原东侧地区旱涝灾害;高原东侧地区严重干旱(洪涝)年,其上空100hPa高度场为负(正)距平控制;高度场与降水场的这种非同步联系,时空相关显著,时间间隔长,物理意义明确,是高原东侧地区夏季旱涝异常的一种预测信号。
1998年青藏高原东侧边界层风场与长江暴雨洪水的关系
李跃清 Li Yueqing
大气科学 , 2000, DOI: 10.3878/j.issn.1006-9895.2000.05.08
Abstract: 应用1998年6~8月四川省和重庆市探空资料,分析了青藏高原东侧大气边界层风场演变与长江上游暴雨和长江洪水的关系.结果表明:1998年夏季长江上游的暴雨天气与高原东侧成都边界层风场变化密切相关,当成都边界层为东北风时,高原东侧边界层维持气旋式偏东流场,长江上游未来产生暴雨等强对流天气;当为西南风等其他风向时,高原东侧边界层维持反气旋式偏南流场,未来是无降水天气;高原东侧边界层的动力激发作用是1998年长江上游暴雨产生的重要机制.并且,再次证明了西邻青藏高原的成都是长江上游天气变化关键点的观点.
长江上游暴雨的边界层动力诊断研究
李跃清 Li Yueqing
大气科学 , 1996, DOI: 10.3878/j.issn.1006-9895.1996.01.09
Abstract: 本文应用诊断分析方法研究了大气边界层动力特征与长江上游暴雨天气的关系。结果表明:大气边界层对暴雨天气有重要影响,成都边界层风场分量u,v<0时,对应暴雨天气,u,v>0时,无降水天气;边界层内正涡度、辐合、上升运动的出现、增强、减弱与暴雨的发生、发展、结束相联系;与青藏高原东部边缘东北-西南走向地势相关的边界层动力激发作用是长江上游暴雨产生的一种物理机制。
Surface Heating in the Tibetan Plateau and General Circulation over It and Their Relations with the Prediction of Drought-Flood at Its Eastern Side
青藏高原地面加热及上空环流场与东侧旱涝预测的关系

Li Yueqing,
李跃清

大气科学 , 2003,
Abstract: Using Singular Value Decomposition (SVD) technique, the relationships between surface heating field in the Tibetan Plateau and 100 hPa height field and summer rainfall in Sichuan Province and Chongqing Municipality (SPCM) at its eastern side and the prediction of drought-flood are studied. The result shows that the first modes derived from SVD indicate the key coupled characteristics of the heating and the height fields with closely time-space correlation. The previous surface heating field in the Tibetan Plateau, by influencing 100 hPa height field over it, results in the anomalies of summer rainfall in SPCM at its eastern side. This asynchronous connection between heating and height and rainfall fields indicates the influence factors and physical reasons for drought-flood disaster in SPCM. The variation of the first modes derived from SVD with the previous surface heating field in the Tibetan Plateau and 100 hPa height field is a strong signal for the prediction of summer drought-flood anomalies in SPCM at the eastern side of the Tibetan Plateau. Thereby, it is put forward that a train of thought for prediction of drought-flood based on SVD technique.
The PBL Dynamic Diagnosis of Heavy Rain over the Upper Reaches of the Changjiang River
长江上游暴雨的边界层动力诊断研究

Li Yueqing,
李跃清

大气科学 , 1996,
Abstract: In this paper,characteristics of the planetary boundary layer(PBL) and its relations with heavy rains in the upper reaches of the Changjiang myer are studied by the diagnostic analysis method The result shows that the PBL has important influence on heavy rains.Heavy rains happen when u,v components in the PBL in Chengdu are negative and it will be clear when the u,v components are positive.The appearance,strengthening and weakening if positive vorticity,convergence and ascending motion in the PBL are connected with the occurrence,development and end of heavy rains.Dynamical trigger in the PBL relating to the topography in the northeast-southwest direction at the eastern edge of Tibetan Plateau is one kind of physical mechanism for heavy rains in the upper reaches of the Changjiang River.
The PBL Wind Field at the Eastern Edge of the Tibetan Plateau and Its Relations with Heavy Rain-Flood of the Changjiang River in 1998
1998年青藏高原东侧边界层风场与长江暴雨洪水的关系

Li Yueqing,
李跃清

大气科学 , 2000,
Abstract: By using the radiosonde data in Sichuan Province and Chongqing Municipality during the June-August of 1998, the relationship between wind field in planetary boundary layer (PBL) at the eastern edge of the Tibetan Plateau and heavy rain-flood of the Changjiang River are analyzed. The result shows that the heavy rain weather at the upper reaches of the Changjiang River is closely connected with the variation of PBL wind field in Chengdu at the eastern edge of the Tibetan Plateau in 1998. When it is northeast wind in the PBL in Chengdu, the PBL at the eastern edge of the Tibetan Plateau maintains easterly cyclonic flow field, and these will be strong convection weather such as heavy rain at the upper reaches of the Changjiang River. When non-northeast wind such as southwest wind maintains, these will be southerly anticyclonic flow field, and rainless weather. The PBL dynamical trigger at the eastern edge of the Tibetan Plateau is a important mechanism for heavy rain at the upper reaches of the Changjiang River in 1998. Furthermore, it is confirmed again that the Chengdu station near the Tibetan Plateau is the key point for the weather variation at the upper reaches of the Changjiang River.
Water vapor transport over China and its relationship with drought and flood in Yangtze River Basin

JIANG Xingwen,LI Yueqing,WANG Xin,

地理学报 , 2009,
Abstract: The characteristics of water vapor transport (WVT) over China and its relationship with precipitation anomalies in the Yangtze River Basin (YRB) are analyzed by using the upper-air station data in China and ECMWF reanalysis data in summer from 1981 to 2002. The results indicate that the first mode of the vertically integrated WVT is significant whose spatial distribution presents water vapor convergence or divergence in the YRB. When the Western Pacific Subtropical High (WPSH) is strong and shifts southward and westward, the Indian Monsoon Low Pressure (IMLP) is weak, and the northern part of China stands behind the middle and high latitude trough, a large amount of water vapor from the Bay of Bengal (BOB), the South China Sea (SCS) and the western Pacific forms a strong and steady southwest WVT band and meets the strong cold water vapor from northern China in the YRB, thus it is likely to cause flood in the YRB. When WPSH is weak and shifts northward and eastward, IMLP is strong, and there is nearly straight west wind over the middle and high latitude, it is unfavorable for oceanic vapor extending to China and no steady and strong southwest WVT exists in the region south of the YRB. Meanwhile, the cold air from northern China is weak and can hardly be transported to the YRB. This brings on no obvious water vapor convergence, and then less precipitation in the YRB.
Expression of hunchback during oogenesis and embryogenesis in Locusta migratoria manilensis (Meyen)
ZhengBo He,YueQing Cao,Bin Chen,TingJing Li
Science China Life Sciences , 2011, DOI: 10.1007/s11427-010-4128-8
Abstract: hb (hunchback) is a contributing factor in anteroposterior axial patterning of insects. Although the hb function in Locusta migratoria manilensis has been investigated, its expression pattern remains unknown. Here, the mouse polyclonal antibody was produced against Hb fusion protein, and then its expression pattern during oogenesis and embryogenesis of L. migratoria manilensis was examined by immunohistochemical staining. Hb protein was detected in the oocyte nucleus which was positioned centrally within the developing oocyte. The oocyte nucleus gradually moved to the posterior end of the egg along with the oocyte maturing. In freshly laid eggs, Hb formed gradient at the posterior end of the egg, and then hb was expressed as a band in the middle of the blastodisc. As the blastodisc differentiated into the head and trunk, the expression region became wide, which would develop into spatial gnathal and thoracic segments. With abdominal segmentation, the expression domain in the gnathal and thoracic region became faint and eventually faded out, while the Hb expression domain appeared at the posterior growth zone in a discontinuous expression manner. The hb expression pattern of L. migratoria manilensis is greatly similar to that of other locusts, such as Schistocerca americana and another L. migratoria. Compared with other insects, hb expression is conserved in the gnathal and thoracic domains, while divergent in oogenesis and abdomen.
Page 1 /126981
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.