排序方式: 共有23条查询结果,搜索用时 15 毫秒
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Gerda Wielander 《当代中国》2009,18(62):849-864
This article investigates the link between Christian belief and the fight for political change in today's China focusing on the activities of certain Beijing house churches. It formulates the hypothesis that Chinese Christian intellectuals may be able to fulfil a special ‘bridge-function’ in Chinese society. This hypothesis is tested against evidence based on a close reading of two Beijing house church publications (Aiyan and Fangzhou) and interviews with intellectuals closely associated with these as well as ‘ordinary’ Christian intellectuals. Areas investigated include education, urban–rural co-operation, the demographic make-up of congregations, the Christian understanding of liberalism, and the activities of Chinese Christian human rights attorneys. It comes to the conclusion that while Christian intellectuals have great potential to play an important role in China's process of democratization, their most prominent members continue the splittist tradition of previous dissident groups while the more meaningful work is undertaken by unknown Christians away from the spotlight. 相似文献
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Oscar W. Gabriel Ulf Bohmann Daniel Gaus Emanuel Richter Annika Frisch Helga Haftendorn Dirk Berg-Schlosser Frank Bönker Dennis-Jonathan Mann Christian Tuschhoff Karsten Schmitz Jared Sonnicksen Heinrich Pehle Marco Schäferhoff Wilhelm Bleek Jürgen Petersen 《Politische Vierteljahresschrift》2009,50(3):646-690
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Edelman G Manti V van Ruth SM van Leeuwen T Aalders M 《Forensic science international》2012,220(1-3):239-244
Non-destructive identification and subsequent age estimation of blood stains are significant steps in forensic casework. The latter can provide important information on the temporal aspects of a crime. As previously shown, visible spectroscopy of blood stains on white backgrounds can successfully be used for their identification and age estimation. The use of this technique however, is hampered by dark backgrounds. In the present study the feasibility to use near infrared (NIR) spectroscopy was evaluated for blood stain identification and age estimation on dark backgrounds. Using NIR reflectance spectroscopy, blood stains were distinguished from other substances with 100% sensitivity and 100% specificity. In addition, Partial Least Squares Regression analysis was applied to estimate the age of blood stains on colored backgrounds. The age of blood stains up to 1 month old was estimated successfully with a root mean squared error of prediction of 8.9%. These findings are an important step toward the practical implementation of blood stain identification and age estimation in forensic casework, where a large variety of backgrounds can be encountered. 相似文献
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Visualization of Latent Blood Stains Using Visible Reflectance Hyperspectral Imaging and Chemometrics 下载免费PDF全文
Gerda J. Edelman M.Sc. Ton G. van Leeuwen Ph.D. Maurice C. Aalders Ph.D. 《Journal of forensic sciences》2015,60(Z1):S188-S192
The detection of latent traces is an important aspect of crime scene investigation. Blood stains on black backgrounds can be visualized using chemiluminescence, which is invasive and requires a darkened room, or near-infrared photography, for which investigators need to change filters manually to optimize contrast. We demonstrated the performance of visible reflectance hyperspectral imaging (400–720 nm) for this purpose. Several processing methods were evaluated: single wavelength bands, ratio images, principal component analysis (PCA), and “SIMPLe-to-use Interactive Self-modeling Mixture Analysis” (SIMPLISMA). Using these methods, we were able to enhance the contrast between blood stains and 12 different fabrics. On black cotton, blood dilutions were visible with a minimal concentration of 25% of whole blood. The hyperspectral camera system used in this study is portable and wireless, which makes it suitable for crime scene use. The described technique is noncontact and nondestructive, so all traces are preserved for further analysis. 相似文献
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Gerda Edelman M.Sc. Ivo Alberink Ph.D. Bart Hoogeboom M.Sc. 《Journal of forensic sciences》2010,55(2):358-365
Abstract: In the case study, two methods of performing body height measurements in images are compared based on projective geometry and 3D modeling of the crime scene. Accuracy and stability of height estimations are tested using reconstruction images of test persons of known height. Given unchanged camera settings, predictions of both methods are accurate. However, as the camera had been moved in the case, new vanishing points and camera matches had to be created for the reconstruction images. 3D modeling still yielded accurate and stable estimations. Projective geometry produced incorrect predictions for test persons and unstable intervals for questioned persons. The latter is probably caused by the straight lines in the field of view being hard to discern. With the quality of material presented, which is representative for our case practice, using vanishing points may thus yield unstable results. The results underline the importance of performing validation experiments in casework. 相似文献
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Politische Vierteljahresschrift - Bis in die 1990er Jahre befand sich die EG-Sozialpolitik infolge weitestgehender Einstimmigkeitserfordernisse in einer ?Politikverflechtungsfalle’... 相似文献