从结构到解构的符号——论罗兰·巴特《符号帝国》中的“空”与“无”

《符号帝国》是罗兰·巴特在解构主义时期用符号学的视点完成的一本关于日本社会文化生活的著作.在对日本社会文化符号的考察中,巴特跨越了早期受索绪尔影响而形成的“科学化”、“体系化”的结构主义符号学观点,感受到了符号的一种“空”和“无”的特点.符号的能指和所指断裂,能指不再对应单一或终极的所指,符号的意义也被无限的推延.在这种对符号新的思考和认识中,巴特也最终完成了向解构主义的转向.     

Accurate mirror-based camera pose estimation with explicit geometric meanings

An accurate closed form solution is proposed to estimate camera pose by several mirrored reference object images acquired via a planar mirror under different unknown poses. Compared with state-of-the-art methods, our method is more accurate when there are more than three images and has explicit geometric meanings. This method also properly handles cases in which some of the mirror poses are parallel. The central idea is to minimize an error metric based on all reflections of rotation, which enables the camera rotation to be estimated directly by SVD of sum of mirrored camera rotations. After that, the camera translation is computed by solving a large system of linear equations to minimize object space collinearity error. Both synthesized data and real data experiments show the advantages of our approach.     

移动无线传感网络节点协同避障的改进方法

传统蜂拥控制模型在协同避障跟踪方面,目前有Reynolds和Tanner的蜂拥模型。笔者曾对其做出了改进,提出了与Steer to Avoid法则相结合的避障模型,该模型在跟踪过程中对凸形障碍有较高的避障效率。由于在Steer to Avoid的方向判断中,目标对节点具有引力,使节点群陷入凹形区域无法绕出。将协同避障模型引入凹形障碍环境中,对模型进一步改进,在Steer to Avoid转向判断时暂时取消目标对节点群的引力,让节点群在进入凹形后自行做出环境的判断并沿着障碍边缘不断搜索路径,最终绕出障碍到达目标。仿真实验结果表明：与传统两个模型相比,该模型在避障的平均速率和时间效率上有显著提高,适用于避开未知的凹形障碍。     

乳胶漆对比率的影响因素

讨论了影响乳胶漆对比率的各种因素。     

The formation of ilmenite FeTiO3 powders by a novel liquid mix and H2/H2O reduction process

FeTiO₃ powder was prepared via a liquid mix and H₂/H₂O reduction process. First, an intermediate compound was synthesized by a liquid mix process. This precursor compound to FeTiO₃ was characterized by thermal analysis (TG/DTA) and Fourier Transform Infrared spectroscopy (FT-IR). Second, the precursor was annealed in the air, H₂/H₂O(g) mixing gas stream, respectively. The obtained powder was characterized by X-ray diffraction (XRD), energy dispersive X-ray analysis spectroscopy (EDAX) and scanning electron microscope (SEM). It was showed that pure and homogenous FeTiO₃ was successfully obtained below 600 °C.     

习俗·象征与地位:静升住宅装饰的文化内涵

传统村落中的住宅装饰不仅在于美观,还象征着不同人群的社会地位。趋吉避凶的心理更使村民对特定构件进行重点修饰,从而显示出他们的习俗。在不同的历史时期,住宅装饰的变化往往体现出崭新的价值观和对“现代化”生活的向往。本文通过研究和比较静升村内的各类装饰题材和装饰手段,分析了文化变迁对住宅装饰的影响。     

路灯监控终端开关灯控制转换原理

通过分析QHO电路原理，来阐述路灯监控终端进行开关控制转换的原理。     

产教合作——创新职业教育办学模式

2006年11月4日,安徽电气工程职业技术学院在本校主办了第三届高职论坛,本次论坛的主题是“校企合作,创新人才培养模式”。本次论坛得到主管部门、兄弟院校和企业界大力支持与积极参与,学术研讨气氛浓厚。安徽省职业与成人教育学会会长金辉同志到会祝贺并作了主题为“产教合作,创新职业教育办学模式”的专题发言,该发言在与会专家中产生了很大反响,现特意刊出。     

RSS在信息发布系统中的应用

本文给出了一个应用RSS的信息发布系统的设计过程和主要代码.