The safety helmet detection technology and its application to the surveillance system

The Automatic Teller Machine (ATM) plays an important role in the modem economy. It provides a fast and convenient way to process transactions between banks and their customers. Unfortunately, it also provides a convenient way for criminals to get illegal money or use stolen ATM cards to extract money from their victims' accounts. For safety reasons, each ATM has a surveillance system to record customer's face information. However, when criminals use an ATM to withdraw money illegally, they usually hide their faces with something (in Taiwan, criminals usually use safety helmets to block their faces) to avoid the surveillance system recording their face information, which decreases the efficiency of the surveillance system. In this paper, we propose a circle/circular arc detection method based upon the modified Hough transform, and apply it to the detection of safety helmets for the surveillance system of ATMs. Since the safety helmet location will be within the set of the obtainable circles/circular arcs (if any exist), we use geometric features to verify if any safety helmet exists in the set. The proposed method can be used to help the surveillance systems record a customer's face information more precisely. If customers wear safety helmets to block their faces, the system can send a message to remind them to take off their helmets. Besides this, the method can be applied to the surveillance systems of banks by providing an early warning safeguard when any "customer" or "intruder" uses a safety helmet to avoid his/her face information from being recorded by the surveillance system. This will make the surveillance system more useful. Real images are used to analyze the performance of the proposed method.     

The man in the mask

A skeletonized body, wearing a black leather bondage mask, was found in a Revolutionary War smokehouse cave with two bullet holes in the back of the head. The body was skeletonized up to the maxillary area but the head region under the mask was well preserved and permitted a positive visual identification. There was evidence that the body had been eaten by small animals and subsequently burned. Investigations into this brutal murder revealed a tale of a bizarre sadomasochistic ritual that attained national prominence.     

Evaluating a new computer-based system for face recall

The Computer-Aided Design Centre has developed a new face recall system which enables a witness to construct the image of a suspect on a television screen. The system currently uses the Photofit library and method of construction. Likenesses of target faces produced by subjects (n=36) using the new system were compared to conventional Photofits produced by a second group of subjects (n=36) of the same targets. There was no difference on any of the three measures employed in the assessed quality of the likenesses produced by Photofit and the CADC System. Both systems tended to produce more recognizable composites when construction was carried out in the presence of the target compared to its absence. Composites made from memory on the initial trial were marginally better with the CADC System than with Photofit. While both systems showed low absolute accuracy, they enjoyed a measure of success in transmitting a likeness of a facial type. It is concluded that while the CADC system shows promise, psychological constraints upon witnesses' powers of recall may place limits on the absolute accuracy achievable with any system of face reconstruction.These experiments were financed by grant No. POL/73 1675/24/3 from the Police Scientific Development Branch of the U.K. Home Office. Points of view expressed in this article are solely those of the authors and do not necessarily reflect the opinions or positions of the funding body. Our gratitude and thanks are due to Tony Kitson and Clive Holloway for their many hours spent developing and operating the CADC system; Jean Shepherd for her skills as a Photofit operator; the Computer-Aided Design Centre; and the MRC Applied Psychology Unit, Cambridge for facilities and subjects.     

认知脑电位检测在目击证人心理面孔重建中的应用

检验目击证人对犯罪嫌疑人面孔记忆的正确性是一项困难的工作。在证人面孔记忆的语义提取过程中,严格遵守完形原则,尽量减少影响证人记忆和再认的因素,把握细节,可以提高目击证人心理面孔重建的质量。认知脑电位检测法可以通过对记忆反应的脑电图成分、潜伏期、波幅等指标的测量,有效判断证人对列队辨认中的面孔是否存有记忆。本文对脑电位检测在目击证人心理面孔重建中的研究和应用进行综述,希望能为相关研究和实践提供参考。     

大麻的DNA分析检验技术

本文简要回顾了大麻的一些常规检验方法,并重点综述了大麻植物的DNA分析检验技术,包括随机扩增多态性DNA(RAPD)、测序扩增区段(SCAR)、短串联重复序列(STR)、扩增片段长度多态性(AFLP)、单核苷酸多态性(SNP)等DNA分子标记检测法。并且对这几种技术的应用范围及前景做了简要分析,以期为实践工作提供基础理论帮助。     

A decision support system model for technology transfer

Technology transfer is the process by which technology originating at one institutional setting is adapted for use in another. A major impediment to the implementation of new technologies to assist with mangerial decision-making problems is a lack of communication between the technology and management communities. Development of a tool designed to bridge the technology transfer gap was the goal of this research. The result is a prototype software package which may be used on an interactive computer terminal by a manager for assistance in designing a decision support system (DSS). The four primary research tasks were:

1. Develop a conceptual model of the DSS design process.
2. Select and adapt, or create, appropriate software to mechanize the model.
3. Develop a knowledge base to describe the interactiveness of various organization variables and managerial decision-making needs.
4. Collect and analyze interview data and implement resultant production rules on the model.

Tasks 1 and 2 were accomplished first to establish the feasibility of this effort. An interview instrument was developed for Task 3. And, corporate managers from several firms were interviewed to accomplish Task 4. Using this data, a prototype production rule model (called DECAIDS for DECISION AIDS) was constructed which supports managerial decision-making from the EMYCIN production rule system used at Stanford University. The purpose of this article is to introduce the need for a Decision Support System Model. A complete copy of this research can be obtained through University Microfilms International, 300 N. Zeeb Road, Ann Arbor, Michigan 48106, from the Naval Postgraduate School, Monterey, California 93940, or the Defense Technical Information Center, Cameron Station, Alexandria, Virginia 22314. The title is “An Interactive Decision Support System for Technology Transfer Pertaining to Organization and Management”, 1980.     

The effects of microwave irradiation on occluded solvents in illicitly produced cocaine hydrochloride

The current clandestine methodology for the manufacture of illicit cocaine hydrochloride utilizes microwave heating in order to dry the finished product. This study addresses the effects this step has on the occluded solvents present in newly prepared cocaine hydrochloride. Nine 1-kilogram-sized batches of cocaine hydrochloride were prepared from cocaine base using a variety of solvents or solvent mixtures commonly utilized in clandestine laboratories, pressed into bricks, and submitted to microwave heating. Residual solvents were qualitatively and quantitatively monitored before, during, and following the microwaving step by static headspace-gas chromatography-mass spectrometry. All solvents used in the conversion process were easily detected in the bricks even after extensive irradiation, confirming that occluded solvents are extremely resistant to removal by microwave heating. Qualitative and quantitative data corresponding to the residual solvents in the prepared cocaine hydrochloride bricks are presented.     

Privacy,surveillance, and the proportionality principle: The need for a method of assessing privacy implications of technologies used for surveillance

Developments in technology have created the possibility for law enforcement authorities to use for surveillance purposes devices that are in the hands or private premises of individuals (e.g. smart phones, GPS devices, smart meters, etc.). The extent to which these devices interfere with an individual's private sphere might differ. In the European Union, surveillance measures are considered lawful if they have been issued in conformity with the legal rules and the proportionality principle. Taking a fundamental rights approach, this paper focuses on the information needed for adopting proportionate decisions when authorizing the use for surveillance of devices that are not built for surveillance purposes. Since existing methods of privacy assessment of technologies do not offer the required information, this paper suggests the need for a new method of assessing privacy implications of technologies and devices which combines an assessment of privacy aspects with the different dimensions of surveillance.     

The absorption-elution technique with the use of highly active proteases: a novel technology for the detection of Rhesus D antigen in bloodstains

The proposed method for the specific detection of Rhesus D antigen in 6 month old bloodstains is based on the use of modified immunoglobulins (anti-rhesus D peptides) in the absorption-elution reaction (AER). These peptides were prepared by an original method using polyclonal anti-rhesus D antibodies and standard erythrocytes preliminarily treated with a highly active protease. Specific identification of D antigen of the Rhesus system obviates the problem of poor AER specificity and thereby significantly improves the quality of forensic biological expertise.     

监控视频中车辆平均速度测算方法比较

根据车辆速度计算公式,提出了两种基于监控视频测速的思路。一是视频图像与实地测量相结合,车辆运动距离通过与监控画面匹配后实地测量,运动时间通过视频帧率运算分别获得。二是利用车辆技术参数测量,在视频图像中,车身前后明显部位经过同一点,车辆运动距离和时间分别通过被测车型技术参数、视频帧率运算获得。并通过实验结果对两种方法进行评价。     

Using the technology information system on internet

This paper describes the Technology Information System (TIS) available on Internet to help firms locate, navigate, and mine over 100 databases containing information about technology resources and expertise. TIS is managed by the University of Alabama in Huntsville.     

我国法医DNA技术标准化体系建设现状与展望

随着法医DNA技术的飞速发展和广泛应用,客观上必然要求以规范化、标准化的手段对其加以严格管理和正确引导。只有遵循标准化作业,检验所得出的结论才能更科学,更准确,更具有说服力达到为案件提供准确线索和为诉讼提供可信证据的要求。虽然,近年来法医DNA技术标准化工作得到了快速发展,但是仍然存在着不足。本文将对目前法医DNA技术标准的现状、存在问题及展望进行总结。     

体液中常见滥用药物的系统筛选分析

本文建立了体液中常见滥用药物的筛选分析体系.尿液或血液经固相萃取(SPE)或液提取(LLE)后,直接用GC/NPD分析或经TFA、BSTFA衍生化后用GC/MS分析.方法适用于同时分析甲基苯丙胺、MDMA、度冷丁、去甲度冷丁、曲马多、美沙酮、EDDP、可卡因、苯甲酰芽子碱、可待因、安定、氯丙嗪、吗啡、单乙酰吗啡等十四种常见滥用药物及代谢物.SPE法和LLE法回收率分别为66～102%和50～86%,最低检出限为2-5ng/ml尿.涉毒案件的鉴定应用表明该分析方法简便、快速、可靠.     

探索性医疗技术临床准入立法的基本原则和基本制度

探索性医疗技术准入制度要遵循保护患者的权利；控制医疗保健费用的过快上涨，保障全民卫生保健计划的落实；协调患者权利的保护、社会伦理和促进医疗技术的更新与发展的平衡，维护公认的伦理价值准则，维护社会生态安全等基本原则。评估制度、试验质量管理制度、风险管理制度、分级分类制度等是探索性医疗技术准入的最基本制度。     

探索性医疗技术临床准入立法的基本原则和基本制度

探索性医疗技术准入制度要遵循保护患者的权利;控制医疗保健费用的过快上涨,保障全民卫生保健计划的落实;协调患者权利的保护、社会伦理和促进医疗技术的更新与发展的平衡,维护公认的伦理价值准则,维护社会生态安全等基本原则。评估制度、试验质量管理制度、风险管理制度、分级分类制度等是探索性医疗技术准入的最基本制度。     

The fourth amendment and aerial surveillance: Searching for guidelines

Advances in technology have given law enforcement agencies additional capabilities when performing surveillance activities. One area in particular—aerial surveillance—especially demonstrates the possible intrusiveness of police investigatory activity.

One of the most important considerations in the area of aerial surveillance is striking a balance between the necessity of police activities and protections guaranteed by the Fourth Amendment. Cases relating to aerial surveillance have sought to develop guidelines for police agencies in this expanding area of search and seizure inquiry.     

A scanning beam time-resolved imaging system for fingerprint detection

A highly sensitive confocal scanning-beam system for time-resolved imaging of fingerprints is described. Time-resolved imaging is a relatively new forensic procedure for the detection and imaging of latent fingerprints on fluorescent substrates such as paper, cardboard, and fluorescent paint. Ordinary fluorescent imaging of latent fingerprints on these surfaces results in poor contrast. Instead, the specimens are treated with a phosphorescent dye that preferentially adheres to the fingerprint which allows time-resolved discrimination between the fingerprint phosphorescence and the background fluorescence. Time resolved images are obtained by synchronizing the digital sampling of the specimen luminescence with the on-off cycle of the chopped illumination beam. The merit of this technique is illustrated with high contrast images of fingerprints obtained from the fluorescent painted surface of a Coke can.