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Search Results: 1 - 10 of 341776 matches for " 王丽丽 "
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不同生长阶段毛苔草地下部分对水文情势的生长响应
Responses of Carex lasiocarpa Underground Part to Water Regimes at Different Growth Stages
 [PDF]


World Journal of Forestry (WJF) , 2016, DOI: 10.12677/WJF.2016.52002
Abstract:
通过幼苗移植水位控制试验,研究了毛苔草地下部分对不同水文情势的生长响应,同时比较研究了水文情势在其不同生活史阶段的影响。结果表明,?5 cm水位条件下,毛苔草根茎最长,持续淹水条件下,毛苔草根茎伸展最快;后期水分充足有力于根茎伸展,但无法超越苗期水文影响;稳定水文条件的改变抑制根茎生长,而从波动水文情势到稳定水文环境的转变,则促进根茎生长。毛苔草不定根长度,旺盛期,随水分条件的增加而变小;后期,在持续淹水条件下伸展较快,但?5 cm水位条件下的仍然最长。
The characters of C. lasiocarpa underground part were studied to find its responses to different water regimes and growth strategies through different water experiences. The main conclusions were as follows: rhizome was longest at ?5 cm water level and stretched fastest under constant flooding. Sufficient water at the later growing period was favorable for rhizome stretching, but could not compensate the inhibition of seeding stage water regimes. Changes of stable water re-gimes inhibited rhizome growth, and changes from fluctuating regime to stable ones promoted its growth. Adventitious roots length increased as the water decreased in the thriving growth period, and increased fast later under constant flooding, but was still longest at ?5 cm water level.
夏子街油田火山岩储层波阻抗反演预测
 [PDF]


Journal of Oil and Gas Technology (JOGT) , 2015,
Abstract:
火山岩储层是准噶尔盆地重要的油气产层之一。准噶尔盆地夏子街油田是我国西部较为典型的火山岩油气藏。由于埋深较大且储层非均质性较强,导致该区储层分布特征不明。对新疆准噶尔盆地夏子街油田开展了三维地震资料精细解释,应用地震属性提取和叠后波阻抗反演等技术,对目的层二叠系风城组三段二亚段(P1f23)进行了储层预测研究。结果表明:研究区有利储层在夏3井、夏1井及夏5井沿线向东变薄或尖灭;波阻抗反演得到的P1f23波阻抗由西向东逐渐变大,有利储层分布呈北西向分布;在夏3井以东方向变薄和尖灭,与地震属性分析得到的储层分布范围相符;反演预测研究区P1f23有利储层分布面积57.09km2,储层厚度预测率达到86%。
基于ARIMA乘积季节模型的港口集装箱吞吐量预测
Port Container Throughput Forecasting Based on the Multiplicative Seasonal ARIMA Model
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,
Operations Research and Fuzziology (ORF) , 2015, DOI: 10.12677/ORF.2015.52005
Abstract:
在对时间序列分析理论研究基础上,利用MATLAB软件编写所有算法的程序系统地分析港口集装箱吞吐量月度数据的变化规律,建立的ARIMA乘积季节模型能充分反映港口集装箱吞吐量的时间序列变化规律。以上海港2002~2009年集装箱吞吐量为例,应用MATLAB软件建立了ARIMA(0,1,1)×(0,1,1)12乘积季节模型,结果表明该乘积季节模型的预测精度较高,预测结果更加合理,有着广泛的应用前景。
Based on the theoretical research of the time series analysis, this paper systematically analyzes the changes rules of the monthly data of container throughput of Shanghai Port from 2002 to 2009 by using MATLAB software. The result shows that the multiplicative seasonal ARIMA(0,1,1(0,1,1)12 model has a high forecasting precision, a reasonable forecasting result and a broad application prospect.
一类具有Leakage时滞的反应扩散神经网络在间歇控制下的指数同步
Exponential Synchronization of Reaction-Diffusion Neural Networks with Time Delay in the Leakage Term Based on Periodically Intermittent Control
 [PDF]

, 徐瑞
Advances in Applied Mathematics (AAM) , 2016, DOI: 10.12677/AAM.2016.52038
Abstract: 本文研究了一类具有混合时滞和Leakage时滞的反应扩散神经网络的指数同步问题。通过构造适当的Lyapunov泛函,结合不等式分析技巧,得到了系统在周期性间歇控制下实现指数同步的条件,且这些条件既依赖于Leakage时滞,又依赖于扩散系数和扩散空间。本文所研究的模型更具有一般性,所得结果去掉了对时滞的限制,降低了同步条件的保守性。最后通过数值模拟说明了所得结论的可行性。
In this paper, the exponential synchronization of neural networks with spacial diffusion, mixed time-varying delays and leakage delay is investigated. By means of Lyapunov functional technique and some inequality techniques, exponential synchronization criteria dependent on leakage delay, diffusion coefficients and diffusion space are derived for the neural networks based on periodically intermittent control. The model studied in this paper is more general. The results obtained remove the restriction on the time-delays and are less conservative. Numerical simulations are carried out to illustrate the feasibility of the proposed theoretical results.
大学生网络成瘾类型的现状调查及其与学习倦怠的关系研究
An Investigation on the Status Quo of the Type of Internet Addiction and Its Relationship with Learning Burnout of University Students
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Advances in Psychology (AP) , 2015, DOI: 10.12677/AP.2015.512111
Abstract:
本研究目的在于通过问卷法了解我国大学生网络成瘾类型的现状及探讨网络成瘾类型与学习倦怠之间的关系,为国内关于网络成瘾方面的研究提供参考。采用两阶段分层随机抽样的方法,在河南省随机抽取了7所高校的1202人进行问卷调查。调查问卷包括大学生网络成瘾类型问卷和大学生学习倦怠量表。结果显示:网络成瘾类型的比例在性别以及网龄上均存在显著差异;网络游戏成瘾的问卷、网络人际关系成瘾的问卷、网络信息成瘾的得分在性别﹑网龄﹑家庭来源上均存在上均存在显著差异;网络游戏成瘾与情绪低落、行为不当以及学习倦怠总分之间均存在显著的相关关系;网络信息成瘾与情绪低落之间存在显著的相关关系;在网络游戏成瘾、网络人际关系成瘾与网络信息成瘾三种成瘾类型上,相对于一般网络使用者,具有成瘾倾向的个体具有较显著的情绪低落﹑行为不当以及成就感低的倾向。结论:大学生中存在比例不同的网络游戏成瘾者、网络人际关系成瘾者、网络信息成瘾者;网络游戏成瘾的得分越高,学习倦怠的表现越明显;网络信息成瘾得分越高,情绪低落的表现越明显;网络游戏成瘾﹑网络人际关系成瘾和网络信息成瘾的倾向越明显,越容易产生学习倦怠。
The purpose of this study is to understand the present internet addiction situation of Chinese col-lege students through the questionnaire and to explore the relationship between the type of in-ternet addiction and learning burnout, and providing reference for domestic research on internet addiction. This study used the method of two-stage stratified random sampling. 1202 students from 7 colleges and universities in Henan Province were selected to fill the questionnaire. The questionnaire includes university student questionnaire of Internet addiction types and the learning burnout scale. Result: There were significant differences among the types of Internet ad-diction in the proportion of gender and age. The network game addiction, the network interper-sonal relationship addiction and the network information addiction questionnaire scores ques-tionnaire scores were significantly different in gender, age, family source. The network game ad-diction scores were significantly correlated with depression, misconduct and learning burnout scores. There was a significant correlation between network information addiction scores and depression scores. Compared to the general internet users, individuals with addiction tendency had more felling of depression, misconduct and low sense of achievement. Conclusion: There is the different proportion of online game addicts, internet interpersonal relationship addicts, network information addicts of college students. The higher scores you get in the network information ad-diction scale, the more obvious manifestations of depression you have. The more obvious tendency to network game addiction, internet interpersonal relationship addiction, or network information addiction, the more prone to learning burnout you are.
不同密度杉木林内辐射与叶面积垂直分布对生长的影响

林业科学研究 , 1990,
Abstract: 本文通过对八年生杉木人工林内太阳辐射与叶面积垂直分布的观测与研究,用计算机绘图与计算,得出以下结果:杉木叶面积的垂直分布和叶面积指数与密度有关,冠形因密度增加由圆锥形变为圆柱形,叶面积指数是先上升后下降。杉木林内辐射的消减随密度的增加而加剧,在冠层深3/4处趋于平缓,当郁闭度低于0.85时,林冠下辐射有回升。用累加叶面积指数分层计算林冠消光系数,可减少因叶片分布不均匀而产生的误差。用累计值计算辐射,可简化观测与计算。用辐射吸收率、叶面积指数、杉木个体生物量及年均生物增长量4个指标对杉木林生长作综合评价,八
Hilbert C*-模框架的和
Sums of Frames in Hilbert C*-Modules
 [PDF]

, 李鹏同
Pure Mathematics (PM) , 2011, DOI: 10.12677/pm.2011.13033
Abstract: 本文研究了Hilbert C*-模框架的和,得到了模框架(或Bessel序列)之和还是模框架的几个结果。
In this paper, we investigate the sums of Hilbert C*- module frames. Several results on the sums of modular frames (Bessel sequences) being still frames are given.
网络微电影《万万没想到》系列与波普美学思想
Network Micro-Film Never Thought of That and Pop Aesthetics
 [PDF]

窦潇,
Art Research Letters (ARL) , 2014, DOI: 10.12677/ARL.2014.33005
Abstract:
2013年的大热的网络微电影《万万没想到》凭借风趣的台词,荒诞不经的剧情,一经推出便在年轻人中掀起一阵强劲的“王大锤”风暴。作为网络文化与电影文化杂糅一体网络微电影,《万万没想到》用独特的后现代表现语言完全颠覆了我们眼中的传统电影,片中那些反常的角色、杂糅的时空和片段化的叙事等后现代语言先一次次粉碎了人们记忆中的经典故事,再用戏谑的形式拼贴重构起来,把狂欢式的网络时代大众文化带到电影艺术中,具有典型的波普艺术气质。
Never Thought of That—a hot online micro-film in 2013, with witty lines and ridiculous story, has triggered a strong storm of “wangdachui” among young people once it came out. As a network mi-cro-film which mixed with film culture and internet culture, Never Thought of That has completely subverted the traditional movie with its unique post-modern performance language. Those per-verse film roles, mixed temporal, fragmented narrative style shattered people’s memory of the classic story, and then it joked together with a form of collage reconstruction, and took the carniv-al-like popular culture of network era into the art of film, giving this micro-film a typical Pop art style.
动画艺术——超现实主义的天然载体
Animation Art—Natural Carrier of Surrealism
 [PDF]

陈娟,
Art Research Letters (ARL) , 2014, DOI: 10.12677/ARL.2014.34006
Abstract:
超现实主义主张探求人的内心世界,寻求理性世界和非理性世界、梦幻与现实的结合,动画艺术属于一种以假定性为特征、以人工形象为演员的影视艺术,动画艺术本身固有的属性成为了超现实主义在当代影像时代传承的绝佳载体,而超现实主义手法被越来越多的动画制作者运用来表达自己的创作思想。本文以当代动画大师大友克洋和今敏的动画艺术创作为例分析,剖析了动画中的超现实主义的表现手法和情怀,它令创作者对生活的感悟艺术升华,使观众得到现实世界中无法得到的精神世界的满足。
Surrealism advocates exploring the inner world and seeking the combinations of rational and ir-rational world and fantasy and reality. Animation art is a kind of film and television arts which is characterized by the assumption and has artificial images as the actors. The inherent properties of animation art become an excellent carrier of surrealism in contemporary era. More and more animators use the surrealism technique to express their creative ideas. This paper took the ani-mation art creations of the contemporary animation masters, Katsuhiro Otomo and Satoshi Kon, as an example to analyze the expression and feelings of surrealism in animation. The surrealism makes the creator’s perception of life sublimate artistically so that the viewers can get the satis-faction in the spiritual world that can’t be gotten in the real world.
有限维模李超代数的单性W(n,m)
The Simplicity of the Finite-dimensional Modular Lie Superalgebra W(n,m)
 [PDF]

,
Pure Mathematics (PM) , 2014, DOI: 10.12677/PM.2014.46036
Abstract:
本文构造了一类有限维模李超代数\"\",并证明了\"\"是单模李超代数。
In this paper, the finite-dimensional modular Lie superalgebra \"\" is constructed, and the simplicity of \"\" is proved.
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