微波衍生化和GC/MS/MS技术分析血、尿中的吗啡

目的建立了血、尿等生物检材中海洛因代谢产物吗啡的定性分析方法。方法以丙酸酐为衍生化剂,采用微波衍生化技术结合GC/MS/MS进行分析。结果当CID电压为0.9V时,衍生化物的母离子与子离子碎片信息丰富,碎片为m/e268、324、342。结论此方法科学、准确,灵敏度高,能满足吸食海洛因类、吗啡类毒品人员的生物检材的检验要求。     

喷墨打印机走纸步进量作为机种特征的实验研究

目的确定一个有助于识别喷墨打印机种的墨迹特征。方法对Epson、HP、Canon和Lexmark四大品牌的65种喷墨打印机的实验输出样本墨迹中重复出现的瑕疵进行分析。这些瑕疵包括：横向漏白条纹、重叠条纹和纵向对接错位等。结果相邻两个瑕疵之间的距离与打印机固有的走纸步进量直接相关。观测得出的走纸步进量既稳定又反映特定机种。结论将走纸步进量作为一个喷墨打印机种特征来利用具有较强的有效性和可行性。     

大学生诚信影响因素的解析结构模型研究

基于层次分析法,从自身因素、家庭环境、学校环境和社会环境四个一级指标,构建大学生诚信的影响因素指标体系,充分考虑各因素之间存在的错综复杂的影响关系,借助解析结构模型（ISM）,建立大学生诚信影响因素的层次递阶结构,找出大学生诚信的最根本影响因素是家庭经济条件、社会环境、网络与媒体导向、学校监督力度和校内利益分配,并根据影响因素的层次结构,从家庭、学校、社会三个方面提出了加强大学生诚信教育的对策。     

The Effect of Vertebral Numerical Variation on Anatomical Stature Estimates

Abstract: Most humans possess 24 presacral vertebrae composed of seven cervicals, 12 thoracics, and five lumbars. However, variation from this standard pattern exists. The purpose of this study was to test the effect of congenital vertebral numerical variation on anatomical stature estimates and to recommend appropriate procedures when such variation occurs. Our sample consists of 41 individuals with unusual vertebral count patterns and known cadaveric statures from the Smithsonian’s Terry Collection. Raxter et al. published a revised Fully anatomical technique in 2006 and we used this to estimate living stature. Based on our results, we recommend using the standard anatomical technique to reconstruct stature, regardless of vertebral pattern. However, when an individual possesses six sacral segments together with a normal number of presacral vertebrae, we recommend the addition of a slight correction factor of 1.3 cm or 0.8% of estimated stature.     

使用Photoshop软件快速测量物证特征

在物证检验工作流中使用Photoshop软件通过物证图像直接进行特征量化测量的实用方法,可完成长度、角度、面积与周长特征测量任务,克服了常规测量手段对于易损易逝物证特征测量的局限以及对于面积、周长特征测量的不足。     

A revised list of independent states since the congress of Vienna

We examine the criteria for membership in the international system as applied in the widely employed system membership list maintained by the Correlates of War Project. Some problems with existing classifications are illustrated and some analytical and empirical consequences of these problems are detailed. Using updated criteria and information, we develop a revised and updated list of the composition of the international system of nation state actors in world politics from the Congress of Vienna to the present.     

Preliminary Study on Determining the Sequence of Intersecting Lines by Fluorescence Technique

The determination of the sequence of intersecting lines is an important part of questioned document examinations. A fluorescence technique was used to determine the sequence of heterogeneous intersecting lines produced using inkpad ink, stamp‐pad ink, ballpoint pens, gel pens, fountain pens, colorants of carbon paper, photocopiers, laser printers, and inkjet printers. A SteREO Discovery.V20 equipped with the ZEN Blue Lite software was chosen to perform the tests.As the results obtained from the study were positive under most conditions, the fluorescence technique was found to be very successful in determining the sequence of intersecting lines from ballpoint pen, gel pen, fountain pen, photocopier, laser and inkjet printers, and inkpad inks. The method was also successful in determining the sequence of intersecting lines from ballpoint pen, photocopier, laser printer, and stamp‐pad inks under most conditions. The technique was not successful in determining the order of crossing lines blending together.     

Evaluation of Lip Prints on Different Supports Using a Batch Image Processing Algorithm and Image Superimposition

This study aimed to develop and to assess an algorithm to facilitate lip print visualization, and to digitally analyze lip prints on different supports, by superimposition. It also aimed to classify lip prints according to sex. A batch image processing algorithm was developed, which facilitated the identification and extraction of information about lip grooves. However, it performed better for lip print images with a uniform background. Paper and glass slab allowed more correct identifications than glass and the both sides of compact disks. There was no significant difference between the type of support and the amount of matching structures located in the middle area of the lower lip. There was no evidence of association between types of lip grooves and sex. Lip groove patterns of type III and type I were the most common for both sexes. The development of systems for lip print analysis is necessary, mainly concerning digital methods.     

Ideological Congruence: Illusion or Imperfection?

Paul Warwick ( 2016 ) argues that much of the research on ideological congruence leaves the erroneous impression that a close match of median left‐right voter opinions and government ideological positions usually emerges from elections. I propose further clarifications. I offer a “natural metric” based on the average distances from the median voter of the most distant and the closest parties competing in all these countries’ elections. I suggest that by these standards average ideological congruence in the Western liberal democracies in the last 20 years has been fairly successful, but not as successful as it could be.     

The Strategic Use of Public Information in Anti-Corruption Agencies: Evidence from the Asia-Pacific Region

In this era of anti-corruption policy-making, the Internet provides a potentially critical strategic resource for anti-corruption agencies (ACAs) aiming to promote organizational and policy learning. Realizing its potential is a creative challenge that will tap different types of capacities in the agency and its environment. We present a framework for understanding the information-related functions that underpin policy and organizational learning for ACAs, develop a rating criteria to assess strategic information usage, and then assess five ACAs in the Asia Pacific region on one aspect of strategic information usage: dissemination via the Internet. Agencies differ markedly in the degree to which their use of public information dissemination via the Internet is “strategic” in nature, pointing towards a new arena for capacity building and strategy development.