空间相关脚印方法;一种快速体绘制方法

提出的一种新的体绘制方法：空间相关脚印方法，充分利用数据空间的相关性，把体元分为分界体元和内部体元，并将内部体元合并成块，对分界体元和块按不同方法计算和绘制。理论分析与实验结果表明，新的方法比Ｗｅｓｔｏｖｅｒ提出的脚印方法在绘制速率上提高了一倍左右，并且绘制出的图象突出了物质分界面。     

相干体技术在河道预测中的应用

应用相干分析技术进行河道储层预测,是通过对相邻地震道间的地震数据体进行相关分析,产生三维相干体,再结合切片、三维可视化等手段对相干体进行综合分析。这种方法不但在理论上得到了合理性论证,而且在实际应用中也得到了很好的验证。借助相干分析技术对河道储层进行预测,可大大提高勘探精度以及钻井成功率。     

地震勘探技术在焉耆盆地勘探开发中的应用

地震勘探技术可以分为以二维地震为主的地震勘探初期阶段、以地震地层学为主的地震勘探中期阶段、以三维地震为主的地震勘探高级阶段、以地震储层研究为主的开发地震初级阶段和以四维地震为主的开发地震高级阶段。针对不同阶段的地质条件和不同的地质任务，选择合理的地震勘探技术可有效提高勘探开发效益。焉耆盆地的勘探开发体现了以地震勘探为主的思路，在勘探开发过程中重视了针对不同勘探开发阶段和不同的地质目标选择合理的地震技术，因此，在早期勘探开发中取得了很好的经济效益。     

Dimensional metrology of lab‐on‐a‐chip internal structures: a comparison of optical coherence tomography with confocal fluorescence microscopy

The characterization of internal structures in a polymeric microfluidic device, especially of a final product, will require a different set of optical metrology tools than those traditionally used for microelectronic devices. We demonstrate that optical coherence tomography (OCT) imaging is a promising technique to characterize the internal structures of poly(methyl methacrylate) devices where the subsurface structures often cannot be imaged by conventional wide field optical microscopy. The structural details of channels in the devices were imaged with OCT and analyzed with an in‐house written ImageJ macro in an effort to identify the structural details of the channel. The dimensional values obtained with OCT were compared with laser‐scanning confocal microscopy images of channels filled with a fluorophore solution. Attempts were also made using confocal reflectance and interferometry microscopy to measure the channel dimensions, but artefacts present in the images precluded quantitative analysis. OCT provided the most accurate estimates for the channel height based on an analysis of optical micrographs obtained after destructively slicing the channel with a microtome. OCT may be a promising technique for the future of three‐dimensional metrology of critical internal structures in lab‐on‐a‐chip devices because scans can be performed rapidly and noninvasively prior to their use.     

Spectral degree of polarization uniformity for polarization-sensitive OCT

Depolarization of light can be measured by polarization-sensitive optical coherence tomography (PS-OCT) and has been used to improve tissue discrimination as well as segmentation of pigmented structures. Most approaches to depolarization assessment for PS-OCT – such as the degree of polarization uniformity (DOPU) – rely on measuring the uniformity of polarization states using spatial evaluation kernels. In this article, we present a different approach which exploits the spectral dimension. We introduce the spectral DOPU for the pixelwise analysis of polarization state variations between sub-bands of the broadband light source spectrum. Alongside a comparison with conventional spatial and temporal DOPU algorithms, we demonstrate imaging in the healthy human retina, and apply the technique for contrasting hard exudates in diabetic retinopathy and investigating the pigment epithelium of the rat iris.     

高斯谢尔模光束通过ABCD光学系统的偏振特性

推导了高斯谢尔模光束通过ABCD光学系统的交叉谱密度矩阵，研究了该条件下光谱偏振度的变化情况。比较研究了高斯谢尔模光束通过自由空间和聚焦光学系统的情况。研究表明，在自由空间中传输足够远的距离后光谱偏振度将达到稳定，在聚焦光学系统中光谱偏振度在焦面位置附近有明显的起伏变化，两者都与光源参量的选择有关。特别指出，位于焦面上...     

The impact of intrinsic cognitive load on the effectiveness of graphical help for coherence formation

Learning with multiple representations requires the mental integration of corresponding information. This highly demanding process of coherence formation can, for example, be assisted by inter-representational hyperlinks, which foster the visual search for correspondences. In three studies we analyzed the effectiveness of hyperlinks depending on the amount of intrinsic cognitive load (ICL), which is on the one hand determined by the complexity of the learning task and on the other hand by the learners’ expertise. In the first two studies we varied the complexity of the integration task and found that the hyperlinks were only effective for the less complex task (low ICL). In the third study the amount of ICL has been varied by the level of expertise and the effects supported the previous outcomes: the help again was only effective in conditions of low ICL (higher expertise), whereas with high ICL (lower expertise) it was ineffective.     

多信息相干技术在阳信洼陷构造研究中的应用

多信息相干技术是基于多种地震体属性的处理与解释技术，该技术以相干为基础，综合了地层倾角和方位角等多种地质信息。与常规相干相比，多信息相干不仅能进行断层和断裂组合的识别，而且，相干、倾角和方位角3种属性的叠合显示能指导我们进行精细的构造解释。在阳信洼陷构造研究中的应用结果证明，该技术是提高构造解释精度的有效方法。     

Study of coherence by speckle interferometry

A simple method for studying the time-dependent coherence of laser radiation by speckle interferometry is proposed and tested by experiment. __________ Translated from Izmeritel’naya Tekhnika, No. 7, pp. 25–26, July, 2006.