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Search Results: 1 - 10 of 332982 matches for " 王俊俊 "
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长江流域水资源管理与决策支持系统的研究
Water Resources Management and Decision Supporting System of the Yangtze River Basin
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Journal of Water Resources Research (JWRR) , 2012, DOI: 10.12677/JWRR.2012.13005
Abstract: 论文分析了目前长江流域水资源管理方面存在的问题,提出了建设水资源综合管理决策支持系统的必要性,指出建设长江流域水资源模型是该系统的基础与核心。构建长江流域水资源模型应综合考虑动态水文循环、需水预测、水资源优化配置、应急调水以及不同的气候变化模式。选取汉江流域为典型流域,初步实现了集模拟预测配置调度(优化)为一体的水资源模型,为今后长江流域水资源模型的建立奠定了理论和模型基础。
The current weakness of water resource management in the YangtzeRiver basinwas discussed, and future necessity and key function of supporting system based on water resource model for integrated management were analyzed in this paper. The system should take into account of climate-change pushed hydrological cycle, water demanding prediction, water resource optimal allocation and emergent water diversion, etc. The pilot system will be developed firstly for water resource simulation, prediction, allocation and optimization in the Han River, and then extend to Yangtze River basin.
谐音与中国民俗
Harmonics and Chinese Folk
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Chinese Traditional Culture (CnC) , 2014, DOI: 10.12677/CnC.2014.23007
Abstract:
谐音就是利用汉字同音或近音的条件,用同音或近音字来代替本字。谐音是存在于各种语言中的共同现象,但在汉语中尤为突出。它存在于汉民族生活的方方面面,与汉民族的文化传统紧密相连,深深地烙上了悠久而又丰富多彩的文化印记。本文将谐音分为同音同形、同音异形、近音异形谐音三类。通过研究发现,谐音大量存在于民俗的衣食住行、节日、礼仪和婚丧嫁娶等诸多方面,它集中体现了中国人趋吉避讳的民族心理。
Harmonics is using Chinese characters which are homophones or approximant consonant conditions, with homophones or approximant consonant words to replace the original words. Harmonics is a common phenomenon that exists in all languages, but more prominent in Chinese. It exists in every aspect of the han nationality lives. It is intimately combined with han nationality cultural tradition, and deeply branded with the long history and colorful cultural imprint. In this paper, harmonics is divided into three categories which are homonym, homophone and heterograph. Through the study, it is found that harmonics exists in the daily life of folk customs and festivals, etiquette and weddings and many other aspects, and it embodies a reflection of psychology of the Chinese “pursuing fortune and avoiding taboo”.
部分线性矩在陕北地区洪水频率分析中的应用
Using Partial L-Moments for Flood Frequency Analysis in the Northern Shaanxi
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Journal of Water Resources Research (JWRR) , 2015,
Abstract:
陕北地区洪水灾害严重且频繁,为了该区水利防洪工程设计建设提供可靠的理论依据,研究部分线性矩在该区洪水频率分析中的应用。本文在介绍部分线性矩原理的基础上,选取陕北交口河、赵石窖、绥德、刘家河、张村驿、志丹及神木7个水文站的洪峰流量资料,将部分线性矩应用于陕北地区洪水序列参数估计中,计算设计洪水值,并拟合洪水频率曲线,利用累积相对偏差平方和评价所得洪水频率曲线对洪峰序列拟合效果,并与普通线性矩法拟合结果进行比较分析。利用部分线性矩和普通线性矩对陕北7个水文站洪水频率进行的分析表明:除了张村译站外,随着删失值F0的增大,设计值的相对偏差值越小,说明部分线性矩法对高尾部经验点据拟合效果更好,提高了设计值估算精度。因此,是一种合理有效的洪水频率分析参数估计方法,可用于陕北地区的洪水频率计算。
The northern Shaanxi province suffers serious and frequent flood disasters. In order to provide an efficient and reliable theoretical basis for design of the flood control project in this area, the Partial L-Moments was used for flood frequency analysis based on introducing the principles of Partial L-Moments. The annual maximum flood series of seven hydrologic stations (Jiaokou, Zhaoshiyao, Sudie, Liujia, Zhangjiashan, Zhidan and Shenmu) were used to estimate the parameters of Generalized Extreme Value (GEV) distribution by proposed method. The design floods were calculated and the flood frequency curve was fitted. Then the cumulative of squares error was regarded as an indicator to evaluate the effect and compared with the traditional method of moments. The results show that with censored level F0 value increases, the relative deviation of the design value is smaller. Partial L-Moments can describe the data better in flood analysis and improve the estimation precision of design floods. Partial L-Moments is a reasonable and effective method and can be used for flood frequency analysis in the northern Shaanxi province.
亲子阅读中成幼问答式会话序列组织结构分析
Structural Analysis of Sequence Organization of Adult-Child Question-Answer Conversations during Shared Story Reading
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Advances in Education (AE) , 2015, DOI: 10.12677/AE.2015.55026
Abstract:
2岁至4岁幼儿与成人故事阅读片段的会话分析研究表明,2岁左右幼儿有时还不能真正理解并对提问作出应答,与成人会话主要是简单的短相邻对结构;3岁左右幼儿基本具备问答序列组织模式,能应用一定的言语交际策略对会话参与者提出的问题和要求作出应答,常直接使用他启修正体现自发的、本能的角色对等性要求和自我定位意识,因而,会话中出现较多的扩展结构;4岁左右的幼儿具备完善的问答序列组织模式,理解和表述更具逻辑条理性,故事阅读的会话序列中常出现非最小后扩展。可见,根据幼儿言语交际技能的变化,成人要相应的调整会话策略,以促进幼儿言语交际和社会化功能的发展。
The analysis of adult-child conversation during story-reading indicated that a child, between 2 and 3 years, could learn the question-answer sequences, and preferred simple and small adjacency pairs. It was not until the fourth year that recognition of being accountable for a meaningful answer became evident. More interaction tragedies would be used in conversation by 3-year-old children, such as inter-expansion and direct other-repair in appropriate response to the adult’s request, which meant awareness of self-position and social asymmetry. According to context and non-minimal post-expansion, advanced answers were noted in a 4-year-olde child’s story-reading discourse. Concluding comments suggested that more competent talking patterns should be formulated to promote the development of children’s conversation skills.
考虑历史洪水资料的EMA参数估计方法
EMA Parameters Estimation Method with Consideration of Historical Flood Information
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, 宋松柏
Journal of Water Resources Research (JWRR) , 2012, DOI: 10.12677/JWRR.2012.14037
Abstract: 为了更有效地应用历史资料信息,提高具有历史洪水资料序列参数的估计精度,研究expected moments algorithm (EMA)法进行具有历史洪水资料的参数估计方法。本文在介绍EMA原理的基础上,以实测洪峰序列为例,选用P-III型分布,进行年最大洪峰序列拟合分布的参数估计,并根据估计参数推求洪峰流量频率曲线图。与传统参数估计方法比较,结果表明:大洪水段,EMA最接近经验点据,而在一般洪水序列段中,三种方法拟合结果相差不大,大部分与实测值接近。因此,在考虑历史洪水的情形下,EMA能有效地进行P-III型分布参数估计,且较传统方法精度高。
In order to more efficiently use historical information and improve the precision of distribution parameter estimates of historical flood information, this paper summarized the method of using expected moments algorithm (EMA) to calculate flood quantile estimates when historical flood information is available. Based on EMA principle, a annual peak discharge data with P-III type distribution was employed to illustrate to parameters estimation of the distribution, the annual peak discharge frequency curve with
二阶齐次线性微分方程解的相似结构
The Similar Structure of Solutions of Second-Order Li-near Homogeneous Differential Equation
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, 李顺初
Pure Mathematics (PM) , 2012, DOI: 10.12677/pm.2012.21005
Abstract: 本文针对二阶线性齐次微分方程的线性非齐次边值问题,通过对其解式的分析和简化,获得了解式的相似结构;提出了一种由一个基本边值问题的解去构造出较为复杂边值问题的解的一种新方法,有利于解决相应的应用问题。
The solution’s formal similarity is gained by reducing the analytical expression of linear non-homogeneous boundary-value problems for second-order linear homogeneous differential equations, a new me- thod is provided to construct solution of equation with complex boundary conditions by employing simple boundary conditions.
恋人间实际亲密度对自我面孔优势效应的影响
The Effect of Genuine Intimacy between Lovers on Self-Face Advantage
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, 郑涌
Advances in Psychology (AP) , 2015, DOI: 10.12677/AP.2015.512098
Abstract:
为了探讨实际亲密度对自我面孔优势效应的影响,本研究从大学和社会上招募59名正处于恋爱关系中的被试,通过实际亲密度量表将其分为高实际亲密度组和低实际亲密度组,并采用面孔再认任务中的外显任务与内隐任务对其进行施测。实验结果显示:无论在外显任务还是内隐任务中,实际亲密度与面孔类型之间均存在显著的交互作用,即自我面孔优势只存在于低实际亲密度的条件下;在高实际亲密度的背景下,自我面孔优势消失。结果表明,个体与恋人之间的实际亲密度影响自我面孔优势效应的稳定性,即实际亲密度对知觉层面的自我边界同样具有调节作用。
In order to investigate whether genuine intimacy has an effect on the stability of the self-face ad-vantage by modulating self-boundary at the perceptual level, a total of 59 participants currently involved in romantic relationships were investigated by the explicit and implicit face-recognition tasks, and were sorted into two levels (high vs. low) by the Genuine Intimacy Scale. The results showed that regardless of the attention level (explicit vs. implicit task), participants in the low genuine intimacy group responded faster to their own face than the faces of lovers, while the ad-vantage effect was eliminated in the high genuine intimacy group. In other words, the perceptual boundary stretched under the condition of high genuine intimacy, and accordingly, the self face is less differentiated from face of lovers for participants with high genuine intimacy than for ones with low genuine intimacy. In conclusion, the self-face advantage is influenced by genuine intimacy, which suggests that genuine intimacy also plays a significant role in modulating boundaries of self-face perception.
数字阵列雷达工程实现技术难点分析
The Technology Problems in the Engineering of Digital Array Radar
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李晓,
Instrumentation and Equipments (IaE) , 2015, DOI: 10.12677/IaE.2015.34021
Abstract: 数字阵列雷达是一种接收和发射波束都采用数字波束形成技术的全数字阵列扫描雷达,是有源相控阵雷达和数字雷达的最新发展方向。本文从数字阵列雷达的基本组成入手,首先分析了数字阵列雷达动态范围低要求、超低副瓣、低截获概率、宽角度扫描等主要特点,最后讨论了工程实现过程中存在的诸如数字TR组件、宽带信号、超低副瓣和通道一致性等技术难点,为数字阵列雷达的深入发展指明了方向。
Digital Array Radar (DAR) is a fully digitized phased array radar in which digital beam forming technique is used both in receiving and transmitting. Firstly, this paper introduced the typical ar-chitecture of DAR. Then, it analyzed the characteristics of DAR, such as the low demand of dynamic range, the ultra low side-lobe, the low probability of Intercept and the broad field of regard. Finally, it discussed the technology problems in the process of engineering realization, including the digital TR Module production, the broadband realization, the ultra low side-lobe and the channel consistency technique. It will be helpful for the fully development of DAR.
Cl~-维持PSII锰复合物功能结构的实验证据

科学通报 , 1995,
Abstract: 锰原子附着在植物光系统Ⅱ(PSⅡ)反应中心D_1和D_2蛋白上,构成锰蛋白复合物,在外周天线蛋白(47,43kD)、3种水溶性蛋白(33,23,17ku)、无机离子Ca~(2+)和Cl~-的辅助调节下,吸收光能,通过S_0→S_4态的循环,将水分解,形成分子氧.用氯化钠溶液清洗去除23,17ku水溶性蛋白后,水分解酶中锰原子极易被PD(Phenylenediamine,苯二胺)和HQ(Hydroquinone,氢醌)之类还原剂攻击,由Mn≥3+还原形成Mn~(2+)并释放出水分解酶,此过程伴随着水分解活性的相应降低.
承接跨国外包对我国生产率的动态影响
,
财贸经济 , 2014,
Abstract: 本文基于价值链内厂商间关系考察了跨国外包强度和跨国外包方式分别对当地企业生产率变动的动态作用机制。在以杭州、宁波、湖州、温州等四个地市396家企业调研数据为样本的实证研究中,发现跨国外包强度与生产率之间具有显著的倒U型关系。将跨国外包方式分为价值链驱动模式和价值链治理方式之后,研究发现价值链驱动模式对当地企业生产率的影响存在不确定性,而价值链治理方式对生产率的影响却是显著的:随着跨国公司对当地企业控制程度的提高,生产率有着不同程度的下降趋势。研究结论意味着我国当地企业通过跨国外包获取一定的技术能力之后,积极发展自主技术才是适宜的发展路径。
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