二十世纪九十年代国产电影中人物群像辨析

20世纪90年代的中国社会,多极发展趋势和走向极大拓展了人们的视野,影响着人们的价值观念、思维方式、生活方式与心理心态。社会群体结构的变迁打破了新中国成立以来工、农、商、学、知识分子的划分,边缘及多样群体的崛起以及旧群体的重新组合使得90年代社会群体划分愈加繁杂。反映在银幕上,国产电影以其特有的人文关怀和思考,在银幕上塑造了形形色色的人物,为90年代中国影坛留下一份影像言说和文化思辩。     

Comparative Assessment of a Novel Photo‐Anthropometric Landmark‐Positioning Approach for the Analysis of Facial Structures on Two‐Dimensional Images

Positioning landmarks in facial photo‐anthropometry (FPA) applications remains today a highly variable procedure, as traditional cephalometric definitions are used as guidelines. Herein, a novel landmark‐positioning approach, specifically adapted for FPA applications, is introduced and, in particular, assessed against the conventional cephalometric definitions for the analysis of 16 landmarks on ten frontal images by two groups of examiners (with and without professional knowledge of anatomy). Results showed that positioning reproducibility was significantly better using the novel method. Indeed, in contrast to the classic approach, very low landmark dispersions were observed for both groups of examiners, which were usually below the strictest clinical standards (i.e., 0.575 mm). Furthermore, the comparison between the two groups of examiners highlighted higher dispersion consistencies, which supported a higher robustness. Thus, the use of an adapted landmark‐positioning approach proved to be highly advantageous in FPA analysis and future work in this field should consider adopting similar methodologies.     

国际变局下日本智库和主流媒体对中国形象的建构

国际秩序的变动、突发的新冠疫情和中美战略竞争的加剧等因素促使日本的中国形象正在发生重要而深刻的变化。日本智库和主流媒体更多地把中国放在国际秩序变动的语境中来认知中国,比起双边,更多是在多边框架内来感知中国。在多种因素的综合作用下,日本形成了“崛起的强国”“国际秩序改写者”、疫情下“坚韧”而“强硬”的中国、带有不确定性的美国“假想敌”等多层次中国形象。日本智库和主流媒体对中国形象的塑造未必是客观的,是基于在国际秩序转型期对自身认同的建构,那就是现行国际秩序维护国和中美之间的“非等距离”协调者。应该对日加强沟通宣介工作,充分调动其对华战略认知中的建设性因素,消解不利因素,防止其固化为刻板印象。     

从同一美学看当代文坛警察形象

中国当代文坛塑造了众多公安人员形象,流露出比较明显的同一美学特征。上世纪九十年代以来,具有同一美学形态的文学创作受到质疑,警察形象塑造呈现多元化态势;同时在大众审美品位的左右下同一美学色彩又得以强化,表现出类型化、通俗化的倾向。警察形象的成功塑造有待于对同一美学作扬弃,克服消费时代文学文本常有的浅表化和雷同化倾向,以求新的突破。     

In Vitro Effects of Household Products on Calliphoridae Larvae Development: Implication for Forensic Entomology

Several parameters can delay the first arrival of flies on a corpse and the subsequent development of the larvae. This study focuses on the development of Lucilia sericata (Diptera: Calliphoridae) (Meigen, 1826) on household chemical‐contaminated substrates. bleach, perfume, hydrochloric acid, caustic soda, insecticide, mosquito repellent, and gasoline in quantities consistent with an amount that could possibly be spilled on a corpse were mixed with beef liver to simulate contaminated fleshes. Larvae were bred at 25°C on these media until emergence. Four developmental parameters were followed: survival rates, development times, sex ratios, and adult sizes. Hydrochloric acid, insecticide, and gasoline killed all larvae. In low quantities, caustic soda and mosquito repellent increased the development time and decreased the adult size. However, high quantities of these chemicals killed all larvae. Lastly, bleach and perfume did not affect the survival rate and barely impacted the development time or adult size. These results demonstrate common household products spilled on a corpse can strongly affect the development of Calliphoridae larvae. The effects of such products should be considered in forensic entomology cases.     

Photographic Analyses Using Skin Detail of the Hand: A Methodology and Evaluation,

Skin features have been employed by law enforcement agencies for suspect and victim identification. Comparisons of hand have arisen in casework where images have been submitted where a face was not present but a hand was visible. This research utilizes a collection of 128 hands from employees of the U.S. Army Criminal Investigation Laboratory to examine the frequency and distribution of skin detail on the dorsal surface of the hand. To assess the location of features, the hand was segmented into 14 regions using readily discernible anatomical landmarks. Overall, 2618 pigmented lesions and 92 scars or injuries were documented. When comparing the regions with one another, Regions 1–10 had fewer pigmented lesions than Regions 11–14. There was no pattern to the distribution of scars throughout the regions. The findings presented a foundation for one possible method that may differentiate hands based on the frequency and distribution of such features.     

Reconstruction of Banknote Fragments Based on Keypoint Matching Method

Banknotes may be shredded by a scrap machine, ripped up by hand, or damaged in accidents. This study proposes an image registration method for reconstruction of multiple sheets of banknotes. The proposed method first constructs different scale spaces to identify keypoints in the underlying banknote fragments. Next, the features of those keypoints are extracted to represent their local patterns around keypoints. Then, similarity is computed to find the keypoint pairs between the fragment and the reference banknote. The banknote fragments can determine the coordinate and amend the orientation. Finally, an assembly strategy is proposed to piece multiple sheets of banknote fragments together. Experimental results show that the proposed method causes, on average, a deviation of 0.12457 ± 0.12810° for each fragment while the SIFT method deviates 1.16893 ± 2.35254° on average. The proposed method not only reconstructs the banknotes but also decreases the computing cost. Furthermore, the proposed method can estimate relatively precisely the orientation of the banknote fragments to assemble.     

Inter-/Intra-observer Reliability of Hand Assessment Using Skin Detail: A Count-based Method

Skin detail of the hand is used in photographic comparisons, yet its reliability has not been evaluated. This study examines a count-based method for documenting skin features. In Part I, 14 individuals counted skin features on 40 color images of the hand, three of which were repeated. An average correlation value of 0.557 was obtained for interobserver assessment; values ranged from 0.545 to 0.832 for intra-observer assessment. The variation in correlation values for hands suggests that there are certain distinguishing characteristics that increase reliability. In Part II, 17 examiners assessed 20 nonrepeated grayscale images of hands by circling skin features. An average correlation value of 0.674 was obtained, but visual assessment of examiner markings suggested some examiners grouped features whereas others viewed them individually. The results suggest further research is warranted, some hands may be more suitable for comparisons, and a standardized method for examining skin features is needed.     

西南地区汉族男性CT颅面径线与身高的关系

目的通过CT测量西南地区汉族男性颅面径线,建立该地区汉族男性颅面径线与身高的回归模型,为法医人类学研究积累数据。方法收集273例西南地区汉族男性头部CT资料,确定颅面部7条径线,运用图像后处理软件进行多平面重建和容积再现,对所选径线进行测量。对各测量指标与身高的相关性运用SPSS 21.0进行分析,建立推断身高的回归方程,并重新选取50例样本代入该数学模型进行检验。结果建立了7条径线的线性回归方程(P0.05);一元线性回归方程相关系数为0.190~0.439,标准估计误差(SEE)为4.597~5.023 cm;多元线性回归方程复相关系数为0.494~0.524,SEE为4.418~4.458 cm。回代检验得y=83.959+3.589 x_6+2.573 x_2,±1SEE准确率最高,为30%;y=72.646+3.316 x6+1.586 x_2+1.553 x_4+2.211 x_3,±2SEE准确率最高,为92%。结论本研究所选取的7条径线与身高均有明显的直线相关性,所建立的多元回归方程适用于推断西南地区汉族男性身高。