检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

表情变化的三维人脸特征分析方法

电子测量与仪器学报 2013年第5期27卷 450-454页

作者：许丽蒋建国詹曙 s.ando 合肥工业大学计算机与信息学院合肥230009 安全关键工业测控技术教育部工程研究中心合肥230009 日本东京大学信息科学学院东京113-8656

三维人脸因其对光照,装扮变化的不敏感成为人脸分析和识别发展的新趋势。但极易受表情变化的影响成为三维人脸研究发展的瓶颈。针对此关键问题提出一种新的不受表情变化影响的三维人脸分析方法:1)计算三维人脸曲面的内蕴特征测地线距离... 详细信息

三维人脸因其对光照,装扮变化的不敏感成为人脸分析和识别发展的新趋势。但极易受表情变化的影响成为三维人脸研究发展的瓶颈。针对此关键问题提出一种新的不受表情变化影响的三维人脸分析方法:1)计算三维人脸曲面的内蕴特征测地线距离,提取等距测地线来描述三维人脸曲面特征;2)利用改进的sIFT算法进行特征匹配。在具有不同表情的三维人脸深度图上的实验结果表明,该方法无需复杂的注册,表情的鲁棒性和识别效果优于传统的三维人脸分析方法。

关键词：三维人脸特征分析表情内蕴特征等距测地线

Development of magnesium composite alloy by a new method combining B_2O_3 addition and melt stirring

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2006年第A3期16卷 1870-1874页

作者：卜乐平 s.TANAKA M.TsUsHIDA s.ando H.TONDA Graduate school of science and Technology Kumamoto University2-39-1 KurokamiKumamoto 860-8555Japan Machinery and Electronic Engineering Institute Inner Mongolia University of AgricultureHohhot 010018China Department of Materials science and Engineering Faculty of EngineeringKumamoto University2-39-1 KurokamiKumamoto 860-8555Japan

For developing high performance magnesium alloys, a new method in combination of B2O3 addition and melt stirring was applied. When 0, 3%, 6% and 12%( mass fraction) B2O3 was added into pure Mg, many twins were produced in each alloy. The average grain size of Mg was about 200μm. In Mg-6Al alloy, the grain size is decreased from 50 to 35μm by B2O3 addition. In Mg-6RE (rare earth) alloys, the grain size is decreased from 35 to 15μm. The grain size of Mg-9Al- 6Ti-3B2O3 alloy is about 5μm. The hardness of pure Mg does not change by B2O3 addition. In Mg-6Al alloy, the hardness is increased by addition of 3% B2O3, however, the hardness of Mg-6RE alloy is decreased by B2O3 addition. Addition of B2O3 into Mg-Al, Mg-RE and Mg-Al-Ti alloys makes the fine grain structures, the hardness of Mg-RE alloy is decreased. This strange behavior may be interpreted with existence of many fine pores in the alloy. The mechanical properties of composite Mg-9Al-6Ti with 3%B2O3 are higher than those of AZ91C. The present results demonstrate the potential of this new method for developing high performance magnesium alloys.

关键词：镁合金金属熔炼有色金属金属加工

在线全文

学校读者我要写书评

暂无评论

不同姿态人脸深度图识别的研究

电子测量与仪器学报 2011年第10期25卷 870-878页

作者：叶长明蒋建国詹曙 s.ando 合肥工业大学计算机与信息学院合肥230009 安全关键工业测控技术教育部工程研究中心合肥230009 日本东京大学信息科学学院

因易受到姿态等因素的影响,传统二维人脸识别的结果往往难以令人满意。针对不同姿态下的三维人脸深度图提出一种新的图像处理方法:首先利用面部特征点定位和偏转角度的计算将人脸深度图旋转到"正中面"位置;然后根据人脸对称性和ICP相关... 详细信息

因易受到姿态等因素的影响,传统二维人脸识别的结果往往难以令人满意。针对不同姿态下的三维人脸深度图提出一种新的图像处理方法:首先利用面部特征点定位和偏转角度的计算将人脸深度图旋转到"正中面"位置;然后根据人脸对称性和ICP相关理论,对旋转后的深度图进行插值。通过该方法处理后的三维人脸深度图与原始数据相比,在人脸识别实验中具有较好的识别效果和鲁棒性。

关键词：图像处理人脸识别三维成像系统深度数据对称性

基于相关型图像传感器的3D AAMs人脸特征自动定位

在线全文

学校读者我要写书评

暂无评论

电子测量与仪器学报 2009年第5期23卷 74-78页

作者：蒋建国常虹詹曙 s.ando 合肥工业大学计算机与信息学院合肥230009 日本东京大学信息科学学院东京113-8656

在基于相关型图像传感器(corre lation image sensor,CIs)三维人脸成像的基础上,利用由CIs得到的深度信息和与之对应的亮度信息,提出一种建立三维人脸模型的方法,将二维AAMs扩展为三维AAMs,融合人脸的形状,纹理和深度信息来构建三维人... 详细信息

在基于相关型图像传感器(corre lation image sensor,CIs)三维人脸成像的基础上,利用由CIs得到的深度信息和与之对应的亮度信息,提出一种建立三维人脸模型的方法,将二维AAMs扩展为三维AAMs,融合人脸的形状,纹理和深度信息来构建三维人脸模型。同时,采用三维曲率对人脸特征进行初步定位来解决AAMs初始姿态参数选择问题。人脸面部定位实验证明此方法在不同人脸姿态,表情和光照条件下定位效果要优于传统的2DAAMs。

关键词：人脸特征定位三维人脸成像三维主动外观模型人脸曲面三维曲率

三维人脸深度图的流形学习-LOGMAP识别方法

在线全文

学校读者我要写书评

暂无评论

电子测量与仪器学报 2012年第2期26卷 138-143页

作者：詹曙张芝华叶长明蒋建国 s.ando 合肥工业大学计算机与信息学院合肥230009 安全关键工业测控技术教育部工程研究中心合肥230009 日本东京大学信息科学学院

人脸识别是生物特征识别技术最友好的身份识别方式,而三维人脸识别由于可解决二维人脸识别中存在的光照、姿态等局限,成为人脸识别的研究热点,但其特征维数过高是该领域的瓶颈,而维数约减是解决这一问题的关键。流形学习是一类非线性维... 详细信息

人脸识别是生物特征识别技术最友好的身份识别方式,而三维人脸识别由于可解决二维人脸识别中存在的光照、姿态等局限,成为人脸识别的研究热点,但其特征维数过高是该领域的瓶颈,而维数约减是解决这一问题的关键。流形学习是一类非线性维数约减算法,LOGMAP是一种基于黎曼法坐标的流形学习算法,该算法可以在保持度量信息不变的情况下,把高维空间的数据映射到低维空间。构建了基于流形学习的三维人脸识别框架,并结合LOGMAP进行三维人脸深度图的识别。实验结果表明,该方法在三维深度图上可以得到良好的识别效果。

关键词：三维深度图人脸识别框架流形学习黎曼法坐标 LOGMAP

The neutrophil–osteogenic cell axis promotes bone destruction in periodontitis

在线全文

学校读者我要写书评

暂无评论

International Journal of Oral science 2024年第1期16卷 154-162页

作者： Yutaro ando Masayuki Tsukasaki Nam Cong-Nhat Huynh shizao Zang Minglu Yan Ryunosuke Muro Kazutaka Nakamura Masatsugu Komagamine Noriko Komatsu Kazuo Okamoto Kenta Nakano Tadashi Okamura Akira Yamaguchi Kazuyuki Ishihara Hiroshi Takayanagi Department of Immunology Graduate School of Medicine and Faculty of MedicineThe University of Tokyo7-3-1HongoBunkyo-kuTokyoJapan Department of Microbiology Tokyo Dental College2-1-14 Kanda-Misaki-choChiyoda-kuTokyoJapan Oral Health science Center Tokyo Dental College2-9-18Kanda-Misaki-choChiyodakuTokyoJapan Department of Osteoimmunology Graduate School of Medicine and Faculty of MedicineThe University of Tokyo7-3-1HongoBunkyo-kuTokyoJapan Unit of Prosthodontics Laboratory of Oral-Maxillofacial Biology Faculty of Odonto-StomatologyUniversity of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh CityVietnam Department of Oral and Maxillofacial surgery Department of Sensory and Motor System MedicineGraduate School of MedicineThe University of TokyoTokyoJapan Division of Rheumatology Department of Internal MedicineKeio University School of MedicineTokyoJapan Department of Laboratory Animal Medicine Research InstituteNational Center for Global Health and MedicineTokyoJapan

The immune-stromal cell interactions play a key role in health and diseases. In periodontitis, the most prevalent infectious disease in humans, immune cells accumulate in the oral mucosa and promote bone destruction by inducing receptor activator of nuclear factor-κB ligand (RANKL) expression in osteogenic cells such as osteoblasts and periodontal ligament cells. However, the detailed mechanism underlying immune–bone cell interactions in periodontitis is not fully understood. Here, we performed single-cell RNAsequencing analysis on mouse periodontal lesions and showed that neutrophil–osteogenic cell crosstalk is involved in periodontitis-induced bone loss. The periodontal lesions displayed marked infiltration of neutrophils, and in silico analyses suggested that the neutrophils interacted with osteogenic cells through cytokine production. Among the cytokines expressed in the periodontal neutrophils, oncostatin M (OsM) potently induced RANKL expression in the primary osteoblasts, and deletion of the OsM receptor in osteogenic cells significantly ameliorated periodontitis-induced bone loss. Epigenomic data analyses identified the OsM-regulated RANKL enhancer region in osteogenic cells, and mice lacking this enhancer showed decreased periodontal bone loss while maintaining physiological bone metabolism. These findings shed light on the role of neutrophils in bone regulation during bacterial infection, highlighting the novel mechanism underlying osteoimmune crosstalk.

关键词： period neutrophil destruction

Aggregation-enhanced direct s_(0)-T_(n) transitions and room-temperature phosphorescence in gold(I)-complex single crystals

在线全文

学校读者我要写书评

暂无评论

Aggregate

Aggregate 2022年第1期3卷 159-167页

作者： Akihiro ando Kazuhisa Ozaki Urara shiina Eikichi Nagao Kyohei Hisano Kenji Kamada Osamu Tsutsumi Department of Applied Chemistry Ritsumeikan UniversityKusatsuJapan Nanomaterials Research Institute(NMRI) National Institute of Advanced Industrial Science and Technology(AIST)IkedaJapan

The design of efficient aggregation-induced emission materials requires an improved understanding of photophysical processes in aggregated ***,the photophysical behavior of an Au(I)complex(R6)that exhibits intense roomtemperature phosphorescence(RTP)in crystals is *** addition,the photophysical processes related to RTP are discussed based on the structure of the molecular aggregates and the primary structure of the *** extremely efficient s_(0)-T_(n) direct transition is found to occur in the R6 ***,intermolecular Au-Au interactions and the internal/external heavy-atom effects of Au atoms are demonstrated to enhance the electronic transitions involving intersystem crossing,namely,direct s_(0)-T_(n) excitation,radiative T_(1)-s_(0) transition(phosphorescence),and s_(1)-T_(n) intersystem *** of the dense molecular packing,both Au-Au interactions and heavy-atom effects play important roles in the *** a result,R6 shows more efficient RTP in crystals than in *** insights into the mechanism of highly efficient RTP in Au(I)-complex crystals are expected to advance the development of new luminogens for a variety of sensing and imaging applications.

关键词： aggregation-induced emission aurophilic interaction gold(I)complex phosphorescence spin-forbidden transition

Identification of an intronic enhancer regulating RANKL expression in osteocytic cells

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

骨研究:英文版 2023年第3期11卷 607-616页

作者： Minglu Yan Masayuki Tsukasaki Ryunosuke Muro Yutaro ando Kazutaka Nakamura Noriko Komatsu Takeshi Nitta Tadashi Okamura Kazuo Okamoto Hiroshi Takayanagi Department of Immunology Graduate School of Medicine and Faculty of MedicineThe University of TokyoTokyoJapan Department of Osteoimmunology Graduate School of Medicine and Faculty of MedicineThe University of TokyoTokyoJapan Department of Microbiology Tokyo Dental CollegeTokyoJapan Department of Oral and Maxillofacial surgery Department of Sensory and Motor System MedicineGraduate School of MedicineThe University of TokyoTokyoJapan Department of Laboratory Animal Medicine Research InstituteNational Center for Global Health and MedicineTokyoJapan

The bony skeleton is continuously renewed throughout adult life by the bone remodeling process,in which old or damaged bone is removed by osteoclasts via largely unknown *** regulate bone remodeling by producing the osteoclast differentiation factor RANKL(encoded by the TNFsF11 gene).However,the precise mechanisms underlying RANKL expression in osteocytes are still ***,we explored the epigenomic landscape of osteocytic cells and identified a hitherto-undescribed osteocytic cell-specific intronic enhancer in the TNFsF11 gene *** analyses showed that transcription factors involved in cell death and senescence act on this intronic enhancer ***-cell transcriptomic data analysis demonstrated that cell death signaling increased RANKL expression in osteocytic *** deletion of the intronic enhancer led to a high-bone-mass phenotype with decreased levels of RANKL in osteocytic cells and osteoclastogenesis in the adult stage,while RANKL expression was not affected in osteoblasts or *** data suggest that osteocytes may utilize a specialized regulatory element to facilitate osteoclast formation at the bone surface to be resorbed by linking signals from cellular senescence/death and RANKL expression.

关键词： utilize removed linking

Effect of drying methods and parameters on the antioxidant properties of tea(Camellia sinensis)leaves

在线全文

学校读者我要写书评

暂无评论

食物生产加工与营养(英文) 2020年第1期2卷 72-82页

作者： A.s.Roslan A.Ismail Y.ando A.Azlan Department of Nutrition and Dietetics Faculty of Medicine and Health SciencesUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Biological Functions Engineering Graduate School of Life Science and Systems EngineeringKyushu Institute of Technology2-4 HibikinoWakamatsu-kuKitakyushuFukuoka 808-0196Japan

Background:Conventional drying using heated air oven is commonly used as a method for preserving the product but often affects the nutritional value,taste,and ***,the heat from the drying method can oxidize and destroy heat-sensitive *** steam(sHs)drying uses superheated steam instead of hot air or combustion gases in a direct dryer and was reported better at preserving the nutritional values of food ***:To evaluate the effect of sHs drying on antioxidant properties of tea *** study also compared sHs drying with conventional and freeze-drying ***:Tea leaves dried using freeze drying retained the highest level of antioxidant properties compared to other drying *** leaves dried using sHs exhibited significantly higher radical scavenging activity,ORAC and FRAP values compared to oven drying *** different drying temperatures(150℃and 175℃),oven dried leaves showed significantly higher(ps than that of sHs dried *** leaves dried for 60,75,and 90 min using sHs showed significantly higher(ps,and also total phenolic content compared to oven dried tea ***:Tea leaves dried using sHs drying method retained higher level of antioxidant properties compared to oven *** drying method also retained lower antioxidant properties as drying time *** study involving sHs drying in food-related fields should be conducted to support its usefulness.

关键词： Camellia sinensis superheated steam drying Antioxidant capacity Drying method