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771.
传统的工程图学教学,其内容、方法、手段已远远落后于现实。作为计算机辅助设计与制造(CAD/CAM)技术的重要组成部分,计算机绘图(CAG)在现代工业制造过程中占据着举足轻重的位置。为了适应时代的发展,培养出具有时代气息的人才,在高校工科专业中应加强计算机绘图方面的教学。  相似文献   
772.
论鲁迅作品中的表现主义版画(木刻)感   总被引:2,自引:0,他引:2  
鲁迅的黑白观念代表了其极端对立的精神特征。鲁迅文本中的“骷髅”意象是“荒原”意象的一种幻化。“战士”意象则是对于荒原 (骷髅 )意象的超越和反抗 ,他们创造了希望之光 ,“反抗绝望”之光 ,代表了鲁迅最高的精神境界。  相似文献   
773.
数字校园给广大师生的专业研究、学习生活带来了丰富的信息资源。充分利用和发挥URP信息技术平台的优势,加强教学资源建设,优化毕业设计过程控制,改进传统的毕业设计管理流程,建立毕业设计知识管理体系,以提高毕业设计教学质量。  相似文献   
774.
This article examines second wave and post-second wave feminist writing about the possibilities of (contemporaneously) new information and communication technologies. A number of texts by key authors, including Shulamith Firestone, Valerie Solanas, Cynthia Cockburn, Donna Haraway and Sadie Plant, are examined in light of the social and political context of their time of writing as well as in relation to 'mainstream' information society theorists such as Daniel Bell and Manuel Castells. The main focus is on how these authors understand the transformative potential of technologies, and attention is drawn to the swings between optimism and pessimism about the role of technology for a feminist political agenda. The role and nature of manifestos are also explored, and the question of whether it is time for another feminist technology manifesto is raised. The article concludes by posing some methodological and theoretical challenges of developing an anti-essentialist (in relation to both gender and technology), politically engaged and relevant feminist research agenda that takes seriously both lived experience and structures of power. The footnotes are an experiment in autobiographical writing in which I make explicit my own connection to this literature and the politics of these debates.  相似文献   
775.
Two different distributions may have equal Rényi entropy; thus a distribution cannot be identified by its Rényi entropy. In this paper, we explore properties of the Rényi entropy of order statistics. Several characterizations are established based on the Rényi entropy of order statistics and record values. These include characterizations of a distribution on the basis of the differences between Rényi entropies of sequences of order statistics and the parent distribution.  相似文献   
776.
This study was designed to determine the significant variables predicting prenatal attachment in an adolescent population. Scientifically supported knowledge of the factors enhancing attachment plays a crucial role in assisting social workers and other health care professionals to accurately assess and intervene to decrease pregnancy risks. Previous prenatal attachment studies demonstrated conflicting findings due to problems from using different theoretical frameworks and research methodologies. In order to ensure consistency, this study infused an attachment theory perspective. Bowlby’s attachment theory, Levitt’s support expectations model, and research from prenatal relationship studies were integrated. The social survey sampled 129 minority status pregnant adolescents attending public school. Measurements included the Prenatal Attachment Inventory (PAI) and the Support Expectations Index (SEI). Regression analyses revealed that support expectation was a powerful predictor of prenatal attachment with pregnancy planning and less stress adding importantly to explain over 33% of the variance. Support expectation was a greater predictor of prenatal attachment than the actual support available. Findings also supported the construct of prenatal attachment as the initial stage of development of the life cycle. Janis B. Feldman is an Assistant Professor, University, of Texas-Pan American.  相似文献   
777.
海洋渔业资源管理的理论探讨   总被引:5,自引:0,他引:5       下载免费PDF全文
集权管制的失败 ,引导人们探讨自然资源管理的替代形式。文章在分析海洋渔业资源的政府集权管理的基础上 ,对分权管理方案的几种形式进行了阐述 ,并试图建立一种地方化的资源管理结构———社区资源管理公司 ,扩展对分权管理的研究。  相似文献   
778.
A common problem faced by many firms in their supply chains can be abstracted as follows. Periodically, or at the beginning of some selling season, the firm needs to distribute finished goods to a set of stocking locations, which, in turn, supply customer demands. Over the selling season, if and when there is a supply‐demand mismatch somewhere, a re‐distribution or transshipment will be needed. Hence, there are two decisions involved: the one‐time stocking decision at the beginning of the season and the supply/transshipment decision throughout the season. Applying a stochastic dynamic programming formulation to a two‐location model with compound Poisson demand processes, we identify the optimal supply/transshipment policy and show that the optimal initial stocking quantities can be obtained via maximizing a concave function whereas the contribution of transshipment is of order square‐root‐of T. Hence, in the context of high‐volume, fast‐moving products, the initial stocking quantity decision is a much more important contributor to the overall profit. The bounds also lead to a heuristic policy, which exhibits excellent performance in our numerical study; and we further prove both the bounds and the heuristic policy are asymptotically optimal when T approaches infinity. Extension to multiple locations is also discussed.  相似文献   
779.
"诛"字的本义是"责罚、责备",由"责罚、责备"义引申出"杀戮"。早在春秋后期,"诛"字便引申出了"杀戮"之义。但"杀戮"之义直到汉代才逐渐成熟并占据主导地位。"诛"表"杀戮"义兴起的缘由大约有三个:1.春秋战国时期君王具有绝对的统治力,往往君主的"责罚"被引申为"杀戮";2."诛""杀"二字的经常性连用,并逐渐凝固成词,促进了"杀戮"义的发展;3."责"字分担了"诛"字的一部分"责备、责罚"义,使"诛"得以专表"杀戮"义。  相似文献   
780.
As more older adults seek ways to remain in their homes during their “golden years,” humor has proven to be a worthwhile intervention that reduces stress and provides a hopeful, playful, and optimistic environment. Development of creative and supportive housing situations for older adults combined with the use of modern technology (e.g., the Internet and computer devices used in the home), aid in bringing humor to the older adult. This article addresses some of the challenges that older adults face and the way that the use of humor can assist them to meet these challenges.  相似文献   
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