Diary of an astronaut: examination of the remains of the late Israeli astronaut Colonel Ilan Ramon's Crew Notebook recovered after the loss of NASA's space shuttle Columbia

Two months after the fatal re-entering into the Earth's atmosphere of Columbia flight STS-107, the remains of Israeli astronaut Colonel Ilan Ramon's Crew Notebook were found strewn in a field in San Augustine County, TX. The random pile of papers was found to have survived the calamity of the Shuttle's disintegration remarkably well. Most of the papers recovered were torn and/or washed out to varying degrees but only mildly charred around the edges. The sheets of paper could be categorized into four groups: Group I: eight sides of paper written while in space in black ink and in pencil--Ramon's personal diary; the writing on these eight sides of paper survived well and is only missing where the pages were torn. Small fragments found in the field were physically matched to holes in the pages thus locating their original positions in the text. Group II: six sides of technical preparation notes written by Ramon before the mission. The writing on these pages was washed out entirely, but much of it was visualized using infrared luminescence. Group III: eight sides of personal notes prepared by Ramon before the mission written in blue ink. The writing on these pages was barely visible to the naked eye and not visualized by infrared luminescence, but was made largely legible by digital enhancement imaging. Group IV: a few sides of printed technical information. These pages were mostly intact and were not examined at length as they contained standard printed material. After completion of examinations at the Questioned Document Laboratory of the Israel Police, the diary was transferred to the Paper Conservation Department of the Israel Museum for preservation and strengthening treatments.     

字库在文书检验中应用

机制文书及印章的制作越来越依赖于计算机系统,而其文字形态、细节特征反映了计算机系统的字库种类,间接反映了计算机的操作系统、排版软件等软件环境以及文书制作过程。因此,通过对计算机字库的系统研究,对由文书上反映的字库特征判断其制作过程、制作软件环境具有重要意义,它为文书检验提供一种新的视角以及方法手段。     

制贩假票证犯罪发展新趋势及侦查革新

制贩假票证犯罪日渐猖獗,且有新的发展趋势：犯罪主体具有地域性;犯罪组织化、专业化;犯罪实施手段信息化;且往往与实施诈骗犯罪相结合。公安机关在打击该类犯罪中存在诸多困难。针对这类犯罪的新特点,应用活＂打击犯罪新机制＂,打破传统侦查思维定势和工作模式,强化主动进攻意识,做好刑侦基础工作,以培育侦破此类案件的新的增长点。     

刑法中复印件的文书性质之研析

文书在立法和理论上有最广义、广义和狭义三种含义上的争鸣,狭义文书具有可视性、持续性、联络性和证据性四个特征。关于文书复制件是否属于文书的问题,在外国刑法理论上存在肯定与否定两种观点的对立,我国刑法理论也存在类似争鸣。为了维护罪刑法定原则,我国刑法中的文书应作狭义理解,在文书复制件问题上宜采取否定说。     

Solving Double‐Sided Puzzles: Automated Assembly of Torn‐up Banknotes Evidence

Reconstruction of 2D object is a problem concerning many different fields such as forensics science, archiving, and banking. In the literature, it is considered as one‐sided puzzle problem. But this study handles torn banknotes as a double‐sided puzzle problem for the first time. In addition to that, a new dataset (ToB) is created for solving this problem. A selection approach based on the Borda count method is adopted in order to make the right decision as to which keypoint‐based method is to be used in the proposed reconstruction system. The selection approach was determined the Accelerated‐KAZE (AKAZE) as the most successful keypoint‐based method. This study also proposes new measures determining the success ratio of the reconstructed banknotes and calculating their loss ratio. When the torn banknotes were reconstructed with the AKAZE‐based reconstruction system, the average success rate was calculated as 95.55% by the proposed metric.     

Stability and Specificity of Counterfeit Protection System Code

In this study, the stability and specificity of a counterfeit protection system (CPS) code were determined. This research involved an analysis of a counterfeit protection system code unit over time using the pattern location measurement method. We collected 379 sample sheets from 196 printers or photocopiers, covering 14 original brands, including 129 models. There was an interval of at least two months between the collections of samples from each machine. Four types of characteristics were established: CPS pattern unit, distance of the CPS unit, position of dots, size and shape of the dot. Except for the partial changes in the Xerox brand, no other brand exhibited changes over time. This implies that the CPS characteristics are stable. Meanwhile, no correlation was noted between the combinations of the characteristic systems in the collected samples, which implied strong specificity.     

Determination of the Sequence of Intersecting Lines Between Toners and Seals by Laser Fluorescence Microscope

Fluorescence microscope is considered to be one of the most effective ways to examine the sequence of intersecting seal and toner lines of questioned documents. In reality, however, the toner (mainly divided into compact and noncompact toners) and seal of a questioned document have such a complex morphology and sequence of crossing lines that current methods cannot meet the requirement of practical document identification. In view of the challenges of document examination, a laser fluorescence microscope and method are developed in this study. The developed microscope provides additional functionality to traditional fluorescence microscopes of transmitted light modality, laser excitation, selectable excitation wavelength, and selectable fluorescence filters. The results obtained from the method of comparisons between transmitted light and fluorescence modalities were positive under most conditions, particularly for noncompact toner examination for which a 100% accuracy rate and 90% detection rate were achieved in blind testing.     

Measuring the Frequency Occurrence of Handwritten Numeral Characteristics

The premise of this follow‐up sister study to “Measuring the Frequency Occurrence of Handwriting and Handprinting Characteristics” was to collect a representative population sampling of numerals and assess how many participants utilize each of the predetermined characteristics as found in their specimens. A total of 1410 handwriting specimen forms were collected from across the United States and pared to 1025 to obtain a proper representative sample of the U.S. adult population based on the same demographics used in the original 2017 study. This study provides frequency of occurrence proportions and 95% confidence limits for 25 handwritten numeral characteristics. A total of 277 intercharacter pairs of handwritten numeral characteristics were cross‐analyzed for interdependence. The results were that 72.92% of all intercharacter pairs had a coefficient of correlation between ?0.2 and +0.2 in this study.     

Application of Raman Spectroscopy and Surface‐Enhanced Raman Scattering to the Analysis of Synthetic Dyes Found in Ballpoint Pen Inks*

Abstract: The applicability of Raman spectroscopy and surface‐enhanced Raman scattering (SERS) to the analysis of synthetic dyes commonly found in ballpoint inks was investigated in a comparative study. Spectra of 10 dyes were obtained using a dispersive system (633 nm, 785 nm lasers) and a Fourier transform system (1064 nm laser) under different analytical conditions (e.g., powdered pigments, solutions, thin layer chromatography [TLC] spots). While high fluorescence background and poor spectral quality often characterized the normal Raman spectra of the dyes studied, SERS was found to be generally helpful. Additionally, dye standards and a single ballpoint ink were developed on a TLC plate following a typical ink analysis procedure. SERS spectra were successfully collected directly from the TLC plate, thus demonstrating a possible forensic application for the technique.     

浅谈疾控机构电子文件与电子档案管理的问题及对策

分析电子文件与电子档案在管理工作中存在的问题。方法:介绍一些相应解决对策。结果:当前电子文件已成为疾控机构档案管理工作不可缺少的重要组成部分,但是还存在一定的问题,针对存在的问题,提出了几点对策。结论:只有认清电子档案与纸质等载体档案的异同,才能做到对电子档案管理提出正确的要求,不妨碍电子档案自身的特殊性,创建自己的管理方法、技术和标准,是档案资料管理工作者所面临的新课题。