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Search Results: 1 - 10 of 2850 matches for " 车娟娟 "
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基于双目立体视觉的图像面积测量算法与技术
Algorithm and Technology of Image Area Measurement Based on Binocular Stereo Vision
 [PDF]

娟娟, 张健, 曹雪虹
Computer Science and Application (CSA) , 2013, DOI: 10.12677/CSA.2013.37A001
Abstract:
本文基于双目立体视觉测距原理,用普通的USB摄像头搭建双目立体视觉系统,提出了图像面积的非接触在线测量方法。首先对摄像头进行标定,得到摄像头的内参数,然后根据OpenCV的模板匹配算法,求出两幅图像中对应匹配点的水平视差,得到距离参数,最后根据平行双目视觉的成像原理,求得实际图像与其在成像平面上的图像之间的空间几何关系,进而求出图像的实际面积。该方法实现简单、成本低、实时性好。经过实验验证,该算法在一定测量范围内达到精度要求。
>A binocular stereo vision system with a common USB camera is developed based on the distance measurement principle of binocular stereo vision, and the non-contact and on-line inspection method for the area of image is studied. First, we calibrate the camera and obtain the internal parameters of the camera. Second, horizontal parallax of the cor- responding points in two images is calculated by template matching based on OpenCV, and then the distance parameter is obtained. Finally, we find the spatial geometrical relationship between the image of the imaging plane and the actual image, and then the actual area of image is gotten. This method is easy to realize with low cost and real-time perform- ance. The experiment indicates that the algorithm meets the accuracy requirements within certain range of measurement.
人类多重剪接RNA结合蛋白类基因RBPMS2的表达分析
张雅娟 , 杨益勤 , 张苹 ,娟娟 , 建花 , 王尉平
扬州大学学报(农业与生命科学版) , 2014,
Abstract: ????
不同冬小麦品种株高的高光谱估算模型
李燕强,娟娟,熊淑萍,杨阳,芳芳,马新明
麦类作物学报 , 2012, DOI: 10.7606/j.issn.1009-1041.2012.03.026
Abstract: 为建立小麦株高的高光谱估算适宜模型,通过连续两年田间不同品种试验,在拔节至抽穗期同步测定小麦冠层高光谱数据和株高,并对两者的关系进行系统分析。结果表明,小麦株高与可见光波段呈负相关,与近红外波段呈正相关,与可见光波段的相关性总体上高于近红外波段。株高可以利用统一的光谱参数进行定量反演,其中以F698、D550、Dy、λr、SDr/SDb和(SDr-SDb)/(SDr+SDb)等光谱参数拟合效果较好。经两年的独立试验数据检验表明,以参数F698、D550、Dy及(SDr-SDb)/(SDr+SDb)为变量建立的株高估算模型表现较为稳定,尤其是以光谱参数(SDr-SDb)/(SDr+SDb)建立的模型,建模决定系数为0.85,预测决定系数和均方根偏差分别为0.86和4.27,相对误差为9%。因此,该参数可以作为估测小麦株高的有效光谱参数,对小麦生长中期的株高进行监测。
基于maxent和arcgis对太白米的潜在分布预测及适宜性评价
,曹博,白成科**,娟娟,张琳琳
生态学杂志 , 2014,
Abstract: ?利用最大熵生态位模型(maxent)与地理信息系统(arcgis),结合89个太白米地理分布数据、28个气候因子以及6个与太白米生长相关的土壤因子,对太白米在我国的潜在分布和适宜等级进行了预测。结果表明:太白米的最适生区(适宜系数>0.5)主要集中分布在四川(阿坝、甘孜和凉山,51813km2)、云南(迪庆和丽江,15889km2)、陕西(太白,16131km2)、西藏(林芝、山南和日喀则,17748km2)和甘肃(陇南,12184km2)等地区。roc曲线的auc=0.979,表明预测结果可信度高。影响太白米分布的主要环境因素有年均降水量(贡献率38%)、海拔(32.1%)、1月最低温(7.6%)、1月降水量(6.8%)、土壤ph值(3.9%)等,太白米最适宜区环境参数为:年均降水量870mm,海拔2550m,1月最低温-6.3℃,1月降水量5.3mm,土壤ph=6.77。?
硕士研究生积极情绪与生活满意度的关系:生命意义感的作用
The Relationship among Positive Emotion, Meaning in Life and Life Satisfaction in Master Students
 [PDF]

娟娟, 赵丹
Advances in Psychology (AP) , 2014, DOI: 10.12677/AP.2014.41001
Abstract: 研究目的:探讨大学生积极情绪、生命意义感和生活满意度的关系,为大学生的心理健康教育提供一定借鉴。方法:选取陕西省三所大学硕士研究生266名,用正负性情绪量表(PANAS)、中文版生命意义感问卷(C-MLQ)和生活满意度评定量表(CSLSS)进行测查。结果:男生的积极情绪和生命意义感得分均高于女生(p < 0.05),而生活满意度得分低于女生(p < 0.05);积极情绪、生命意义感和生活满意度各量表得分之间均呈正相关(r = 0.29 - 0.31p < 0.01);生命意义感在积极情绪和生活满意度之间存在部分中介效应(中介效应值为0.06p < 0.05)和调节效应(β = ?0.18, p < 0.05)结论:硕士研究生生命意义感在积极情绪和生活满意度之间存在中介和调节作用。
Objective: To explore the relationship among positive emotion, meaning in life and life satisfaction in master
状态时滞的离散线性系统的能控性分析
Controllability of Linear Discrete-Time Systems with Time-Delay in State
 [PDF]

娟娟, 高彩霞
Advances in Applied Mathematics (AAM) , 2015, DOI: 10.12677/AAM.2015.42011
Abstract:
本文使用一种基于数据的方法来分析状态时滞的离散线性系统的能控性,利用这种方法,不需要识别系统的参数,就可以通过测量数据,构造一个能控矩阵来分析系统的能控性。因此在实践中,就可以节省时间并且避免相应的识别错误,对确定系统特性的研究也是可行的。
In this paper, a data-based method is used to analyze the controllability of linear discrete-time systems with time-delay in state. By this method, one can directly construct a controllability matrix using the measured state data without identifying system parameters. Hence, one can save time in practice and avoid corresponding identification errors. Moreover, it is feasible to the study of characteristics of deterministic systems.
云南省城镇上山进程中“度”的解析与运用
Analysis and Application of “Degree” in the Mountain Town Process in Yunnan Province
 [PDF]

娟娟, 丁文荣
Geographical Science Research (GSER) , 2015, DOI: 10.12677/GSER.2015.43016
Abstract:
自2011年云南省委结合云南省特殊的地理环境而提出“城镇上山”的概念以来,既得到了党中央、国务院领导和有关部门的充分肯定和高度评价,同时还受到来自社会各界的广泛质疑。而究其成败关键就在于对“度”的把握和应用上。鉴于此,本文在梳理“城镇上山”的历史背景基础上,探讨了度理念的运用,对推进云南省“城镇上山”及科学决策具有积极的意义。
The concept “mountain towns”, proposed by Yunnan Provincial, combining with its special geo-graphical environment in 2011, not only is fully affirmed and highly appraised by the CPC Central Committee, the State Council and relevant departments, but also has been widely questioned from the community. The key to success lies in its study on the “degree” of certainty and applications. In view of this, the paper, by sorting out the historical background of “mountain towns”, discusses the application of the “Degree” concept, and this has a positive significance on promoting the Yunnan Province “mountain towns” and its scientific decision-making.
先前知识对推理学习的影响
How Prior Knowledge Affects Category Learning
 [PDF]

邢强, 敬上
Advances in Psychology (AP) , 2011, DOI: 10.12677/ap.2011.12010
Abstract: 采用眼动方法研究了先前知识对推理学习的影响。实验采用单因素被试内设计,考察了被试在推理学习过程中对知识相关维度和无关维度的注视情况。结果表明被试对相关维度的注意多于无关维度,并且这种倾向在实验一开始就出现了,说明先前知识能够促进对知识相关维度的学习。
The paper studied how prior knowledge affects the inferenc learning by eyetracking. Using one-way within-subjects design, the experiment examined subjects’ fixations on knowledge-related demensions and knowledge-unrelated ones. The results showed that subjects allocated more attention to knowledgerelated demensions than knowledge-unrelated ones, and the tendency appeard in the beginning. This showed that prior knowledge can promote the learning of knowledge-related demensions.
校园电子竞技运动的社会学分析
The Sociological Analysis of Campus E-Sports
 [PDF]

树达
Advances in Physical Sciences (APS) , 2014, DOI: 10.12677/APS.2014.21002
Abstract: 随着社会发展,电子竞技作为一项新的运动竞赛方式逐渐进入了校园,由于师生对电子竞技的认识及其利弊认识还是不够清晰,且经常参与该项运动会影响学生的正常学习生活。对于电子竞技运动到底如何在学校发展,该不该在学校发展。为了解决电子竞技在校园发展这一问题针,笔者尝试从人文社会学角度,采用文献资料法、专家访谈法等对电子竞技这一体育文化现象在校园的发展的利弊进行了分析,力图为解决电子竞技在校园的发展提供一些借鉴。

With the development of the society, campus electronic athletics as a new way of sport competition gradually come into the campus. But students have not enough understanding of it and then don’t have a clear knowledge of its advantages and disadvantages; what’s more, if students often participate in this sport, their study life will be affected. Given that, research on the way of development in the school and whether it can be accepted is very important. In order to solve the problem of the development of electronic sports on campus, the author attempts to analyze the advantages and disadvantages of the campus electronic athletics from the social perspective, using the method of literature, expert interviews and so on to provide some reference for solving the development of electronic athletics on campus.

延期支付条件下考虑坏账影响的三阶段经济订货模型
娟娟
中国管理科学 , 2012,
Abstract: ?研究零售商处于强势地位的三级供应链结构中,考虑到顾客坏账率的影响,分析二阶延期支付策略下零售商的最优订货策略。分两种情形讨论了坏账影响下零售商的利息收入与利息支出,建立了相应的决策模型。通过模型的分析求解,得出零售商的最优订货周期和最优订货批量的判定方法,并进一步分析了各参数对零售商最优决策的影响。最后,通过数值分析对有关结论进行了验证。
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