鉴定木马程序来源的两种方法

分析木马源程序自身的特征,提出两种鉴别目标代码宿源的方法：根据其机器码和注册码的计算方式或者根据收信地址的保存方式和加密计算方式和参数进行鉴别。上述方法客观而高效。     

Detection of blood in stains on material evidence by fluorescent hemotest and spectrofluorometry

The efficiency of detection of blood in stains on material evidence by spectrofluorometry and fluorescent hemotest developed at Bureau for Forensic Medical Expert Evaluations of the Leningrad region and by traditional methods used in Russia and abroad is compared. The proposed methods are 1000 times more effective than the methods routinely used in Russia; moreover, they allow objective computer recording and processing. These methods are 50-70 times cheaper than the methods used in foreign countries and are virtually as sensitive. Fluorescent hemotest persuasively proves the presence of blood in stains on material evidence under laboratory conditions, at the site of accident, and even under field conditions (express analysis).     

浅议道路交通安全措施及评价

道路交通安全措施的评价研究在欧美一些国家已开展多年。其研究成果为欧美发达国家各国政府制定道路交通安全政策,指导道路交通实际安全工作提供了科学依据。本文通过对道路交通安全措施评价概念的阐述,介绍了国外常用的几种评价方法,并对我国开展道路交通安全措施研究提出了建议。     

Reliability in age determination by pulp/tooth ratio in upper canines in skeletal remains

Estimation of age of skeletal remains is one of the most complex questions for anthropologists. The most common macroscopic methods are based on dental wear and histological evaluation of bone remodeling. These methods are often qualitative, require great technical expertise, and have proved inexact in the estimation of ages over 50 years. Certain dental methods investigate the apposition of secondary dentine, in the study of tooth cross-sections, and X-rays to study width, height, and pulp area. The primary author previously proposed a method of estimating the age of a living person based on the pulp/tooth ratio (PTR) method in the upper canines. The aim of the present study is to verify whether the PTR method can also be used to estimate the age at death of skeletal remains. This paper investigates the study of historical samples of known age as a means to validate the proposed method.     

Authentication of Surveillance Videos: Detecting Frame Duplication Based on Residual Frame

Nowadays, surveillance systems are used to control crimes. Therefore, the authenticity of digital video increases the accuracy of deciding to admit the digital video as legal evidence or not. Inter‐frame duplication forgery is the most common type of video forgery methods. However, many existing methods have been proposed for detecting this type of forgery and these methods require high computational time and impractical. In this study, we propose an efficient inter‐frame duplication detection algorithm based on standard deviation of residual frames. Standard deviation of residual frame is applied to select some frames and ignore others, which represent a static scene. Then, the entropy of discrete cosine transform coefficients is calculated for each selected residual frame to represent its discriminating feature. Duplicated frames are then detected exactly using subsequence feature analysis. The experimental results demonstrated that the proposed method is effective to identify inter‐frame duplication forgery with localization and acceptable running time.     

以示范城市建设为契机积极构建现代警务工作机制——访哈尔滨市公安局副局长王忠毅

中国公共安全：哈尔滨市作为中西部地区城市，这次积极申报第二批科技强警示范城市建设，您作为公安局分管局长是怎么考虑的？     

INTIMACY AND HOMICIDE: COMPENSATING FOR MISSING DATA IN THE SHR*

The Supplementary Homicide Report (SHR) of the FBI's Uniform Crime Reporting Program remains the most accessible and widely used database on lethal violence in the United States. However, researchers using this database must address the problem of missing data, which typically is the result of the failure to file, inconsistent filing of reports to the FBI by local police agencies, or incomplete records about the characteristics of specific incidents of homicide (particularly, missing information about perpetrators), even when reports are filed. Williams and Flewelling (1987) proposed methods of compensating for missing information, and this paper revisits their assessment by again determining the extent of the problem and the consequences of adjusting for it. Alternative methods are proposed and analyzed, with a focus on relationship‐specific rates (i.e., rates of family, intimate nonfamily, acquaintance, and stranger homicide). The implications of the results for further use of the SHR are discussed.     

Automated recovery of damaged audio files using deep neural networks

In this paper, we propose two methods to recover damaged audio files using deep neural networks. The presented audio file recovery methods differ from the conventional file carving-based recovery method because the former restore lost data, which are difficult to recover with the latter method. This research suggests that recovery tasks, which are essential yet very difficult or very time consuming, can be automated with the proposed recovery methods using deep neural networks. We apply feed-forward and Long Short Term Memory neural networks for the tasks. The experimental results show that deep neural networks can distinguish speech signals from non-speech signals, and can also identify the encoding methods of the audio files at the level of bits. This leads to successful recovery of the damaged audio files, which are otherwise difficult to recover using the conventional file-carving-based methods.     

Forensic medical examination in cases of sexual abuse

The article presents the analysis of forensic medical expert practice in the field of sexual abuse. Drawbacks in expert examinations, official decisions on such examinations, low expertise of forensic medical personnel in sexual crime, lack of tools for genital and anal examination are analysed and methods of correction of this situation are proposed.     

The Utility of the Samworth and Gowland Age‐at‐Death “Look‐up” Tables in Forensic Anthropology*

Abstract: Accurate age‐at‐death estimates are crucial to forensic anthropologists when onstructing biological profiles aimed at narrowing a missing‐persons list and to allow for timely and efficient identification of an unknown victim. The present contribution evaluates the utility of three new age‐at‐death estimation techniques recently proposed by Samworth and Gowland (2007). Results indicate that, in the samples under study, the Samworth and Gowland estimates from the pubic symphysis and auricular surface perform similar to alternate phase methods. The combined method does not appear to further enhance either the precision or the accuracy of the single pubic symphysis age‐at‐death estimate. In conclusion, these new methods seem to be more robust to distribution deviations than originally proposed by Samworth and Gowland (2007). They are therefore suitable for immediate and reliable forensic usage in the United States and worthy of further research for their use in North American forensic contexts.     

APPLYING CASE STUDY METHODOLOGY TO CHILD CUSTODY EVALUATIONS

The child custody evaluation (CCE) can play a critical role in the resolution of custody disputes in the Family Court. There have been a number of significant methodological advances made in this field by various researchers over the past 20 years. It is timely that a scientifically‐based, integrative, methodological framework be developed within which existing methods might be situated. In this paper, case study methodology is proposed as an appropriate methodological framework for CCEs. The application of this methodology to CCEs is explicated with particular attention being paid to the methodological tasks of data collection and data interpretation. An orienting model is proposed to guide the collection of data, and strategies are described for applying population level research findings to individual cases in the form of risk and resilience models. Finally, coherence, analogy, and making methodology explicit are proposed as evaluation criteria for the CCE process and reports, and suggestions are made about outcome research.     

Testing Reliability of the Computational Age‐At‐Death Estimation Methods between Five Observers Using Three‐Dimensional Image Data of the Pubic Symphysis,

In an effort to standardize data collection and analysis in age estimation, a series of computational methods utilizing high‐dimensional image data of the age indicator have recently been proposed as an alternative to subjective visual, trait‐to‐phase matching techniques. To systematically quantify the reproducibility of such methods, we investigate the intrascan variability and within‐ and between‐observer reliability in initial scan data capturing and editing using 3D laser scans of the Suchey–Brooks pubic symphysis casts and five shape‐based computational methods. Our results show that (i) five observers with various training background and experience levels edited the scans consistently for all three trials and the derived shape measures and age estimates were in excellent agreement among observers, and (ii) the computational methods are robust to a measured degree of scan trimming error. This study supports the application of computational methods to 3D laser scanned images for reliable age‐at‐death estimation, with reduced subjectivity.     

Identification of Natural Images and Computer‐Generated Graphics Based on Statistical and Textural Features

To discriminate the acquisition pipelines of digital images, a novel scheme for the identification of natural images and computer‐generated graphics is proposed based on statistical and textural features. First, the differences between them are investigated from the view of statistics and texture, and 31 dimensions of feature are acquired for identification. Then, LIBSVM is used for the classification. Finally, the experimental results are presented. The results show that it can achieve an identification accuracy of 97.89% for computer‐generated graphics, and an identification accuracy of 97.75% for natural images. The analyses also demonstrate the proposed method has excellent performance, compared with some existing methods based only on statistical features or other features. The method has a great potential to be implemented for the identification of natural images and computer‐generated graphics.     

A new method for casting three-dimensional shoeprints and tire marks with dental stone

Dental stone is used as the major material for recovering three-dimensional shoeprints and tire tracks from crime scenes. The procedure for using dental stone sparsely changed over the years. There are two common methods for mixing dental stone: (i) a premeasured amount of dental stone is put in a zip-lock bag to which water is added, and (ii) the water and dental stone are mixed in a bucket. We suggest a novel rapid and efficient method of mixing dental stone and water in a bottle. These methods were compared at equal conditions. The parameters measured were the number of air bubbles, the strength of the cast, the ease of use, and the sharpness and quality of the accidental characteristics present in the cast. The proposed bottle method has the advantages of both the bucket and the zip-lock methods hence it combines strength, sharpness, high quality, and ease of use.     

Health systems agency and state health planning and development agency reviews; certificate of need programs--PHS. Notice of proposed rulemaking

The Assistant Secretary for Health, with the approval of the Secretary of Health and Human Services, proposes to amend the regulations governing certificates of need reviews by State health planning and development agencies (State Agencies) and health systems agencies (HSAs). The proposed amendments would accomplish two tasks: (1) Implement amendments to the Public Health Service Act made by the Health Programs Extension Act of 1980 (Pub. L. 96-538) and the Omnibus Budget Reconciliation Act of 1981 (Pub. L. 97-35) and (2) reduce Federal regulatory burdens. Under the provisions of Title XV of the Public Health Service Act, the planning agencies are required to administer certificate of need programs consistent with the Secretary's regulations, under which they review and determine the need for proposed capital expenditures, institutional health services and major medical equipment. These regulations set forth proposed changes to the requirements for satisfactory certificate of need programs. Interested persons are invited to submit written comments and recommendations concerning these proposed rules as well as suggestions for alternative methods of implementing any of the provisions of the amendments that affect the requirements for certificate of need programs.     

变造文书的认定

从变造的法律概念入手,对刑法界和文检界关于变造的基本学说和含义进行了比较分析,在此基础上重新定义了变造文书的概念,强调变造文书的实质是对重要内容和证明事项的改变。根据变造的方法和手段,对变造文书进行重新分类,分析了各类变造文书的重要特点和常见的制作手段,重点提出了判断变造文书的两个依据和认定的两个原则,旨在探索能够运用于文书检验领域的实用性认定标准。     

Detection of furadan in biological fluids

Optimal conditions have been determined for furadan isolation from biological fluids by means of the mixture of solvents ethyl acetate-acetone in volume 1:1. Possible purification of the compound from coextractive substances of biomaterial on the column with silica gel L 100/160 mcm is demonstrated. IR-spectrophotometric methods and high performace liquid chromatography with a detector of photodiode matrix are proposed for identification and quantitation of furadan in blood and urine specimens.