抗坏血酸对核乳胶性能的影响

文章介绍抗坏血酸对核乳胶灵敏度、灰雾密度及潜影衰退性能的影响，并与日本富士ＥＴ－７Ｂ型乳胶的潜影稳定性能在不同温度和相对湿度条件下作相应比较。     

基于photoshop实现浮雕图像“数字拓片”的技术研究

拓片作为我国特有的传统艺术形式,目前正面临着一系列尴尬问题.一方面,无论是其自身作为非物质文化宝贵遗产,还是对于文化艺术及其它领域的重要研究价值而言,拓片艺术都应当得到弘扬与发展.然而另一方面,拓片的传统制作方式又与珍贵文物的保护之间有着十分明显的矛盾和冲突.基于此,充分发挥艺术专业学科的优势,结合先进的计算机技术,提出了一套将浮雕物的"实物照片"转化成"数字拓片"的方案,并通过试验初步验证了该方案的有效性.     

用OpenGL实现几何模型真实感图形显示

文章介绍了利用ＯＰｅｎＧＬ开发真实感图形显示模块的方法,对真实感图形显示技术中的常见问题进行了研究,并提出了一些解决方案。     

双近贴聚焦像增强器放电点解决方法探讨

本文就双近贴聚焦像增强器研制过程中遇到的放电点问题及其产生的原因、克服方法作简要的分析和探讨。     

基于邻域加权稀疏表示的高光谱图像目标探测

提出了一种基于邻域加权稀疏表示的高光谱图像目标探测方法。在构造稀疏模型时,以单位化像元的内积表示像元的相似性,据此对重构图像中测试像元空间邻域的像元进行加权约束,保证了空间的平滑性;并提出基于加权最小二乘的正交匹配追踪算法求解该稀疏模型,它使得每次迭代中参数估计有效。实验结果表明,该探测算法是有效可行的。     

A note on the computation of high-dimensional integral images

The integral image approach allows optimal computation of Haar-based features for real-time recognition of objects in image sequences. This paper describes a generalization of the approach to high-dimensional images and offers a formula for optimal computation of sums on high-dimensional rectangles.     

Collaborative remembering in older adults: Age-invariant outcomes in the context of episodic recall deficits.

Rapidly growing research reveals complex yet systematic consequences of collaboration on memory in young adults, but much less is known about this phenomenon in older adults. Young and older adults studied a list of categorized words and took three successive recall tests. Test 1 and 3 were always taken individually, and Test 2 was done either in triads or alone. Despite older adults recalling less overall than young adults, both age groups exhibited similar costs and benefits of collaboration: Collaboration reduced both correct and false recall during collaborative remembering, was associated with more positive beliefs about its value, and produced reminiscence, collective memory, and some forgetting in its cascading effects on postcollaborative recall. We examine the role of retrieval organization in these effects. As environmental support may play a substantial role in healthy aging, the relatively preserved effects of collaboration on memory in older adults hold promise for testing judicious uses of group remembering in aging. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

煤田采区三维地震资料精细解释方法及应用

三维地震勘探在煤田主要解决构造问题,因各地区地质情况的复杂程度不同,虽然已经过十多年的发展,但构造解释的准确度也有不同程度的差异。随着计算机技术发展和石油物探方法的引进,煤田采区三维地震勘探资料高信噪比、高分辨率为精细解释提供了可能。本文利用小波分析技术、方差体技术、图象处理等多种方法,结合已知采区的实例,对小断层做了精细构造解释,提高了三维地震资料构造解释的精度。     

准双曲面齿面接触斑点图像处理的边缘检测

介绍了几种图像边缘检测的算子,并利用这些算子进行准双曲面齿轮接触斑点图像的边缘检测,总结出相对比较有效的接触斑点图像边缘检测算子,为进一步施行接触斑点特征参数的提取和三维重构提供技术和理论依据。     

基于遥感与GIS数据融合的煤矿资源开发动态分析

将不同分辨率的遥感影像进行融合处理,依据野外实地调研的样本进行分类后,在地理信息系统支持下与非遥感相关资料进一步融合,分析处理后得出最终结果.通过对比分析乡宁县18 a来煤炭资源开采与土地破坏状况,监测出工作区存在部分违规采矿行为,较好地实现了对矿产开发点的分布状况、固体废弃物堆放情况以及由此引发的土地破坏等问题的动态监测.