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161.
文章在Heikkila方法的基础上,研究了另外一种确定模板参考点圆心在像平面上对应像点的方法,然后根据这些点对来标定摄像系统。  相似文献   
162.
马克思主义整体观与大学生思想政治教育整体有效性   总被引:1,自引:0,他引:1  
整体性是马克思主义的鲜明特征,与马克思主义整体性相一致的马克思主义整体观,体现了整体性方法和理论的内在统一,是马克思主义世界观和方法论的重要内容。坚持马克思主义整体性观,在整体性视野下认识和理解大学生思想政治教育有效性,辨析大学生思想政治教育整体有效性理念,阐释大学生思想政治教育整体有效性的本质和当代内涵,创建大学生思想政治教育整体有效性实践模式,对于推动思想政治教育理论建设学科化和大学生思想政治教育实践科学化具有方法论意义。  相似文献   
163.
邵洵美的新诗创作深受波德莱尔、魏尔伦和乔治.莫尔等人的影响,诗歌风格带有明显的象征诗派死亡、阴郁、颓废和放荡的基调,致使邵洵美的名字长期被排斥在主流的文学史书写之外。新时期以来,文学史的建构是以文学性和审美性作为视野的。邵洵美诗歌颓废的诗美特征及独特的诗体建设,使他有理由成为新诗建设中颓废诗派的代表,邵洵美也应成为一个被书写的名字。  相似文献   
164.
Many sports require athletes to rapidly transform visual information into a targeted motor response, a process referred to as visuomotor reaction. On the behavioural level, athletes have long been established to achieve faster simple visuomotor reaction times when compared to non-athletes. However, although the superior performance in athletes has been attributed to the central nervous system, the underlying neural mechanisms remained poorly studied. More recently, a growing number of neurophysiological and neuroimaging studies systematically addressed the functional and structural modulations in the athletes’ visual and motor systems as well as their contribution to visuomotor performance. This article reviews current research on structural and functional characteristics of the athletes’ cortical visuomotor system associated with simple visuomotor reactions, sports-specific visuomotor performance and visuomotor training. The primary objective is to shed light on the neural mechanisms potentially contributing to superior visuomotor reaction performance in athletes participating in visuomotor demanding disciplines. A more comprehensive understanding of performance-determining neural functions could provide great potential for diagnostics and training to improve athletic performance.  相似文献   
165.
Athletes need excellent vision to perform well in their sports, and many athletes have turned to vision training programs as a way to augment their traditional training regimen. The growing practice of ‘sports vision training’ relies on the notion that practice with demanding visual perceptual, cognitive, or oculomotor tasks can improve the ability to process and respond to what is seen, thereby improving sport performance. This enterprise is not necessarily new, but has been advanced greatly in the past few years by new digital technology that can be deployed during natural training activities, by perceptual-learning-inspired training programs, and by virtual reality simulations that can recreate and augment sporting contexts to promote certain sports-specific visual and cognitive abilities. These improved abilities may, in turn, instill a competitive advantage on the playing field, underscoring the potential value of these approaches. This article reviews emerging approaches, technologies and trends in sports vision training. Where available, critical review of supporting research is provided.  相似文献   
166.
在新课改背景下,新的教学理念对提高课堂的有效性和学生的自主性特别是在优化学习上有很大的帮助。在组织教学过程中运用一些新的教学理念对于准确定位、优化学习环境和提高学习效益将产生积极的影响。本文借鉴学习认知理论,针对现代学校数学教学实际,提出优化学习的数学教学基本理念。  相似文献   
167.
课堂教学的简约主要是指教学目标简洁明了、教学内容简约充实、教学语言简要流畅、教学环节简化自然、教学思维策略简缩深化、教学媒体简易实用和教学评价简炼及时。简约不是简单,它是一种课堂感受;简约不是低能,它是一种高效整合。构建简约型教学课堂,减轻学生的学习负担,获取优质高效的学习效率,最终实现提高学生学习能力和综合素养这一根本愿望。  相似文献   
168.
根据高速公路路面的基本特征,通过分道线特征点投影位置的计算,提取出了比较完整的当前车道分道线特征点。建立道路边缘灰度模型,采用Gabor变换多分辨率的特点,对图像按方向进行滤波处理,实现道路边缘线检测和拟合。实验结果表明,所讨论的方法在工程实践中有实际应用价值。  相似文献   
169.
目前夜间事故勘察车载照明多采用传统自适应灯光,存在照射范围有限且调节照明方向繁琐等问题。因此,基于视觉设计一种车载照明自动跟踪系统。使用视觉处理技术与双步进电机控制对车载照明系统进行改进,以增强车载照明智能化和灵活性。针对传统自适应灯光需人为操纵照射目标的问题,车载照明系统在运行时对红外光源(移动目标)进行图像检测,实时反馈拍摄图像中红外光源位置坐标,再根据位置坐标信息控制双步进电机,带动车载照明灯准确地照射到红外光源坐标位置。实验结果表明,该系统可快速检测到照明目标位置坐标,准确控制步进电机移动,可满足跟踪目标的要求,准确率达 95%。  相似文献   
170.
The importance of effector visual feedback has previously been indicated using an opaque screen to prevent sight of the catching hand for the final 150–200 ms of a flight path of 850 ms in total. Attention was drawn to the finding that the ability to position the arm correctly in the line of flight of the ball deteriorated as a consequence of the number of trials without visual feedback. However, the use of only 20 test trials allows a possibility that the proprioceptive system may be able to re‐establish predominant control under conditions of prolonged visual decrement. In order to verify this notion, the number of experimental trials was quadrupled for 24 subjects of mixed sex in a replication of the initial paradigm.

The results provided preliminary support for the view that the positioning of the catching arm is more seriously affected by visual occlusion than the timing of the grasp phase. However, increments in accuracy of limb orientation were evidenced in all screen conditions, as the number of trials increased. The grasp component of one‐handed catching appeared to remain unaffected by the increase in experimental trials. The relative influence of skill level on catching errors was next addressed by comparing the performance of the six best and worst catchers in the group.

The results did not support previous research which found a relation between skill level and error type. The number of position, but not grasp, errors decreased as a function of task practice for both subgroups. Future investigations should, perhaps, focus on the developmental nature of movement control in one‐handed catching to obtain a clearer picture of this relation.  相似文献   
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