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排序方式: 共有148条查询结果,搜索用时 62 毫秒
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Valeria Santoro Ph.D. Piercarlo Lozito D.D.S. Antonio De Donno Ph.D. Francesco Introna M.D. 《Journal of forensic sciences》2011,56(1):224-228
Abstract: This study was based on a morphometric analysis of bite marks starting from the quantitative definition of the anterior teeth by the geometric acquisition of the “injuries,” using bite marks impressed on pig skin and plastic. Each mark was photographed and acquired. A dedicated program automatically supplied the values of the shape factors and the areas of the pattern geometric figures. The values obtained for the homologous samples were compared to the heterologous values. Statistical comparison was made of the sets by linear regression, determining the correlation coefficient and the determination coefficient for each value. Results showed only 4.8% and 2% of overlap between homologous and heterologous values. This study was carried out in attempting to quantitatively define the anterior teeth of the human dentition and the procedure described and the results obtained support the advantage of morphometric studies and computer‐aided programs in this study of bite marks. 相似文献
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Legal context: This article focuses on the relationship between trade markrights and other forms of statutory protection. Key points: FIFA is the proprietor of a number of trade mark registrationsin South Africa. The strength of these registrations is discussedand the view taken that a number are open to attack, in termsof both distinctiveness and user requirements. It is then shownthat, if statutory protection is given for the same words andphrases, the weaknesses of the trade mark registrations willbe avoided. Practical significance: The article serves as an illustration of the manner in whichinternational sporting bodies attempt to extend their IP protectionbeyond the bounds of existing legislation. 相似文献
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T.R. Elliot A.H. Rogers J.R. Haverkamp D. Groothuis 《Forensic science international》1984,26(2):131-137
The use of pyrolysis mass spectrometry (Py-MS) and statistical analysis of mass spectra is introduced as a method for “finger-printing” strains of Streptococcus salivarius. The objective is to provide correlative evidence regarding the identity of suspects in cases of assault or rape involving bite-marks. The results of the analysis of isolates from two individuals are presented, illustrating the differentiation of S. salivarius at strain level according to the origin of the isolate. 相似文献
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《北京周报(英文版)》2014,(10):11
正China’s Electric Vehicle Dilemma Caixin February 102014 marks the fourth year since Chinalaunched its industrialization of electric vehicles.However,even in pilot cities like Beijingand Shanghai,it remains difficult for consumers to buy an electric vehicle.In order to promote electric vehicles,which are more expensive than traditionalfuel-burning vehicles,both the central andlocal governments have provided subsidies toelectric vehicle purchasers.For example,for an 相似文献
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《今日中国(英文版)》2014,(8)
正AUGUST marks the first anniversary of xue.taobao.com,an online education platform along the lines of Taobao(the Chinese online shopping website equivalent to eBay and Amazon).Nipping at its heels,having appeared last November,is Google’s new product Helpout,a C2C(consumer-to-consumer)e-learning platform.This successive branching out of Internet giants into the e-learning marketplace will undoubtedly have a posi- 相似文献
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Marie-Eve Le Bouthillier MEng Lynne Hrynkiw BASc Alain Beauchamp PhD Luc Duong PhD Sylvie Ratté PhD 《Journal of forensic sciences》2023,68(6):1958-1971
This paper explores a deep-learning approach to evaluate the position of circular delimiters in cartridge case images. These delimiters define two regions of interest (ROI), corresponding to the breech face and the firing pin impressions, and are placed manually or by an image-processing algorithm. This positioning bears a significant impact on the performance of the image-matching algorithms for firearm identification, and an automated evaluation method would be beneficial to any computerized system. Our contribution consists in optimizing and training U-Net segmentation models from digital images of cartridge cases, intending to locate ROIs automatically. For the experiments, we used high-resolution 2D images from 1195 samples of cartridge cases fired by different 9MM firearms. Our results show that the segmentation models, trained on augmented data sets, exhibit a performance of 95.6% IoU (Intersection over Union) and 99.3% DC (Dice Coefficient) with a loss of 0.014 for the breech face images; and a performance of 95.9% IoU and 99.5% DC with a loss of 0.011 for the firing pin images. We observed that the natural shapes of predicted circles reduce the performance of segmentation models compared with perfect circles on ground truth masks suggesting that our method provide a more accurate segmentation of the real ROI shape. In practice, we believe that these results could be useful for firearms identification. In future work, the predictions may be used to evaluate the quality of delimiters on specimens in a database, or they could determine the region of interest on a cartridge case image. 相似文献
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Louis D'Aulerio B.A. Gary Whitman B.S.M.E. Larry Sicher B.S.M.E. Alan Cantor B.S.A.E. Mike Markushewski B.S.M.E.T. 《Journal of forensic sciences》2019,64(3):754-764
The introduction of frontal airbags and seatbelt pretensioners for front seat occupants provided an opportunity to address injuries caused by seatbelt loading by introducing load‐limiters, which were intended to reduce belt loading while maintaining proper restraint. Investigation and forensic analysis of real‐world crashes identified that the implementation of these devices, in some circumstances, increased the potential of injury. This paper focuses on the trade‐offs of load‐limiters, that is, the reduction loading to the occupant versus the corresponding increase in seatbelt webbing and occupant movement. If the additional webbing introduced is not controlled, the risk of injury to the occupant is increased and could result in more frequent and severe injuries rather than a reduction. This paper quantifies the webbing introduced by load‐limiter activation through forensic analysis of the seatbelt involved in real‐world crashes and testing and assesses its effect on the injuries sustained by the occupant. 相似文献