SOFTWARE DEVELOPMENTS FOR PROCESSING CIRCULARLY SYMMETRIC 2D DIFFRACTION/SCATTER

用于处理圆对称二维衍射/散射的软件开发

• 批准号: 8170000
• 负责人: PING LIU
• 金额: $ 4.75万
• 依托单位: STANFORD UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-05-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8170000
• 关键词: Air; Aliquot; Bite; Computer Retrieval of Information on Scientific Projects Database; Computer software; Computers; Country; Data; Data Analyses; Data Collection; Data Files; Development; Evaluation; Funding; Future; Grant; Image; Institution; Internet; Linux; Names; Process; Research; Research Personnel; Resources; Running; Sampling; Scientist; Source; United States National Institutes of Health; base; computerized data processing; data format; detector; programs; software development; web site

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. Our data processing program (previously called MarParse) has received a new name SasTool to reflect its advanced features specifically developed for small angle scattering studies and extended support of any 2D detector generating 16 or 32 bit TIFF images. SasTool converts the 2D raw images into a universal ASCII data format expressed in I(Q) vs Q through several steps of numerical data processing, including statistical evaluation and background subtraction. Recent enhancements include 1) the ability to exclude bad images on the basis of outlier transmitted beam intensities which would be higher when a sample aliquot accidentally contained air bubbles when it is being oscilated in the beam; 2) the development of a linux version SasTool, eliminating rather slow Samba protocal for maping data files on the linux file server to a PC network where the PC version of SasTool processes data. The linux SasTool will also facilitate planned integration of the data analysis into the data acquistion process in near future since both of our data collection and file server computers run linux. 3) in-image dezingering as opposed to dezingering by comparing multiple images and rejecting outliers. The in-image dezingering feature rejects outlier pixels, typically produced by cosimic ray hits, upon azimuthal integration. SasTool has contributed to highly effective data collection by facilitating the user to plan the next experimental conditions in a much more timely fashion. The software has been made available on our internet web site, and there have been 208 downloads (of which 149 were since January 1, 2009) by scientists from 49 institutions in 11 countries since August 1, 2007, when we began recording downloads.

该副本是利用众多研究子项目之一 由NIH/NCRR资助的中心赠款提供的资源。子弹和 调查员（PI）可能已经从其他NIH来源获得了主要资金， 因此可以在其他清晰的条目中代表。列出的机构是 对于中心，这不一定是调查员的机构。 我们的数据处理程序（以前称为Marparse）已收到一个新名称Sastool，以反映其专门为小角度散射研究开发的高级功能，并扩展了对任何2D检测器生成16或32位TIFF图像的支持。 Sastool通过数值数据处理的几个步骤，包括统计评估和背景减法，将2D RAW图像转换为通用ASCII数据格式。最近的增强功能包括1）能够根据离群传输的束强度排除不良图像的能力，当样本等分试样在光束中振动时，将其偶然地包含气泡时会更高； 2）开发Linux版本Sastool，消除了Samba Protocal的速度相当慢，用于将Linux文件服务器上的数据文件映射到PC网络，其中Sastool Proces of Sastool Processing数据。 Linux Sastool还将在不久的将来促进将数据分析的计划集成到数据获取过程中，因为我们的数据收集和文件服务器计算机都运行Linux。 3）内图像脱落，而不是通过比较多个图像和拒绝异常值来脱落。图像脱津式特征拒绝在方位性集成下，通常由宇宙射线命中产生的离群像素。 Sastool通过促进用户以更及时的方式计划下一个实验条件，从而为高效的数据收集做出了贡献。该软件已在我们的Internet网站上提供，并且自2007年8月1日开始录制下载以来，来自11个国家 /地区的49个机构的科学家已经下载了208个（自2009年1月1日起）。