试论《明人十二像册》高度写真风格的中国渊源     

黄乐乐 《美育学刊》2020,11(2):116-120

现藏于南京博物院的一批无款写真头像《明人十二像册》,是中国写实画的一座高峰。对于这个像册的绘画风格,现当代学者多半都偏向认为是受到西方绘画的影响。但经与西方圣像画比较研究,像册仍属于中国本土的绘画传统,受到了宋代山水画和花鸟画高度写真精神的影响。  相似文献   

我国变性土资源特点和生产潜力     

张民恭子同 《资源科学》1993,15(3):1-10

本文论述了我国变性土资源的分布、发生特点和低产限制因素，并通过对变性土肥力特征及其生产潜力的研究，探讨了这类土壤的改良和合理利用的途径。  相似文献   

松嫩平原菹草资源及其渔业利用   总被引：1，自引：0，他引：1  

杨富亿 《资源科学》1993,15(6):39-47

菹草是松嫩平原湖泊、水库等渔业水域较重要的资源植物。本文根据1984—1992年试验研究的部分成果,初步报道了该平原区渔业水域菹草资源现状和菹草型渔业水体生态系统特点,探讨了菹草的渔业经济价值,并提出菹草资源的渔业合理开发利用途径。  相似文献   

陕北黄土高原土地生产力与人口适宜容量研究     

戴进 《资源科学》1997,19(6):10-18

陕北黄土高原土地生产力及人口容量研究是关系到该地区今后如何发展的重要问题。本文在划分陕北为3个农业生态区基础上，提出了一套简洁而实用的土地分类方案对应产量估算模式，进行区域土地生产潜力和人口容量分析。指出了陕北人地关系的基本态势和调控策略。  相似文献   

《周易》计数法的两个问题     

何慧斌 《衡阳师范学院学报》1992,(3)

为了符合《周易》的原义,在用二进制数表示《周易》八卦图时,应该以三爻卦的最上一爻作为个位数,而对六十四卦图中的六爻卦则应该用八进制数来表示。  相似文献   

关于定理∮_s_D~→·d_S~→＝Σq_0的两点注释     

李文 《江西教育学院学报》1995,(6)

本文首先论证了＂定理∮＿ｓＤ·ｄｓ＝∑ｑ０的高斯面上任一点的Ｄ是由空间总的自由电荷分布决定的＂结论成立的条件是；其次，本文还给出了应用定理∮＿ｓＤ·ｄｓ＝∑ｑ０求出Ｄ的条件，并举例加以验证。  相似文献   

Potential theory method for 3D crack and contact problems of multi-field coupled media: A survey     

Chen?Wei-qiu?Email author  Ding?Hao-jiang 《浙江大学学报(A卷英文版)》2004,5(9):1009-1021

This paper presents an overview of the recent progress of potential theory method in the analysis of mixed boundary value problems mainly stemming from three-dimensional crack or contact problems of multi-field coupled media. This method was used to derive a series of exact three dimensional solutions which should be of great theoretical significance because most of them usually cannot be derived by other methods such as the transform method and the trial-and-error method. Further, many solutions are obtained in terms of elementary functions that enable us to treat more complicated problems easily. It is pointed out here that the method is usually only applicable to media characterizing transverse isotropy, from which, however, the results for the isotropic case can be readily obtained. Project (No. 10372088) supported by the National Natural Science Foundation of China  相似文献   

Parents’ PTSD symptoms and child abuse potential during the perinatal period: Direct associations and mediation via relationship conflict     

《Child abuse & neglect》2019

BackgroundPosttraumatic stress disorder (PTSD) symptoms are associated with parental aggression towards children, but little is known about the relation between parents’ PTSD symptoms and their risk for perpetrating child physical abuse during the early parenting years, when the potential for prevention of abuse may be highest.ObjectiveTo examine direct associations between mothers’ and fathers’ PTSD symptoms and child abuse potential, as well as indirect effects through couple relationship adjustment (i.e., conflict and love) in a high-risk sample of parents during the perinatal period, most of whom were first-time parents.Participants and settingFrom March 2013 to August 2016, data were collected from 150 expecting or new parental dyads in which the mother was participating in a home visiting program.MethodsData were analyzed using the Actor-Partner Interdependence Mediation Model.ResultsFor mothers and fathers, there were direct associations between PTSD symptom severity and child abuse potential (βs = .51, ps <.001), and this association for fathers was stronger at higher levels of mothers’ PTSD symptoms (β = .15, p = .03). In addition, parents’ own and their partners’ PTSD symptoms were each indirectly associated with parents’ own child abuse potential through parents’ report of interparental conflict (standardized indirect effects = .052–.069, ps = .004) but not love.ConclusionsAddressing parents’ PTSD symptoms and relationship conflict during the perinatal period using both systemic and developmental perspectives may uniquely serve to decrease the risk of child physical abuse and its myriad adverse consequences.  相似文献   

The moderating effect of regulatory focus in the relationship between potential flexibility and practical flexibility     

《Contemporary educational psychology》2019

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板式电位差计测量电池电动势的不确定度评定     

林佩珠 《广东教育学院学报》2006,26(3):58-59

用适当简化处理的不确定度计算方法，分析板式电位差计测量电池电动势实验测量结果的不确定度，给出一种合理的不确定度评定方案．  相似文献