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TransHist:Occlusion-robust shape detection in cluttered images

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Computational Visual Media 2018年第2期4卷 161-172页

作者： chu Han xueting Liu Lok Tsun Sinn tien-Tsin Wong The Chinese University of Hong Kong Hong Kong China.

Shape matching plays an important role in various computer vision and graphics applications such as shape retrieval, object detection, image editing,image retrieval, etc. However, detecting shapes in cluttered images is still quite challenging due to the incomplete edges and changing perspective. In this paper, we propose a novel approach that can efficiently identify a queried shape in a cluttered image. The core idea is to acquire the transformation from the queried shape to the cluttered image by summarising all pointto-point transformations between the queried shape and the image. To do so, we adopt a point-based shape descriptor, the pyramid of arc-length descriptor(PAD),to identify point pairs between the queried shape and the image having similar local shapes. We further calculate the transformations between the identified point pairs based on PAD. Finally, we summarise all transformations in a 4 D transformation histogram and search for the main cluster. Our method can handle both closed shapes and open curves, and is resistant to partial occlusions. Experiments show that our method can robustly detect shapes in images in the presence of partial occlusions, fragile edges, and cluttered backgrounds.

关键词： shape matching shape detection transformation histogram

Hepatitis B and C viruses are not risks for pancreatic adenocarcinoma

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World Journal of Gastroenterology 2014年第17期20卷 5060-5065页

作者： Ming-chu Chang Chien-Hung Chen Ja-Der Liang Yu-Wen tien Chiun Hsu Jau-Min Wong Yu-Ting Chang Department of Internal Medicine National Taiwan University HospitalCollege of MedicineNational Taiwan University Department of Surgery National Taiwan University HospitalCollege of MedicineNational Taiwan University Graduate Institute of Oncology College of MedicineNational Taiwan University

AIM: To investigate whether hepatitis B virus (HBV) and hepatitis C virus (HCV) increase risk of pancreatic ductal adenocarcinoma (PDAC).

关键词： Hepatitis B virus Hepatitis C virus Pancreatic ductal adenocarcinoma Risk Endemic disease Diabetes mellitus

Endometriosis coexisting with dermoid cyst in a single ovary： a case report

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Chinese Medical Journal 2011年第4期124卷 627-630页

作者： CHEn Tsai-chuan KUO Hsu-tung SHYU Shin-kuo chu Chih-ping CHAnG tien-chang Department of Obstetrics and Gynecology Lin-Shin Medical Corporation Lin-Shin Hospital Department of Family Medicine Lin-Shin Medical Corporation Lin-Shin Hospital Graduate Institute of Biomedical Engineering National Chung Hsing UniversityTaichung 408 TaiwanChina Department of Anatomical Pathology Lin-Shin Medical Corporation Lin-Shin Hospital Chang tien-chang General Clinic Taichung 408 TaiwanChina

Endometriosis coexisting with a dermoid cyst of the ovary is extraordinarily rare, although these both benign conditions are said to be common in women in the reproductive age group. There are only two previous case reports, which is evident from our literature review from January 1960 through January 2010. Acute abdomen is one of the greatest diagnostic challenges and easily ignored by the clinicians to exclude the possibility of gynecologic illness. A 35-year-old woman was referred by the doctor in Family clinic. She experienced a three-day period of severe right lower abdominal pain and intermittent vomiting. Ultrasonography identified a bilocular, cystic, hypoechoic, and hyperechoic tumor, 7 cm×6 cm×6 cm in the right adnexal region. Laparoscopic cystectomy was performed under the impression of ovarian cyst with torsion or hemorrhage. The frozen section was benign and appendiceal status was adequate. Histopathologic examination described an ovarian cyst composed of endometrial-type lining with stroma cells （endometriosis） and benign terotoma tissue with plenty of skin appendages and sebaceous glands. We report this unusual and interesting ovarian mass to remind physicians that the usage of the Endobag after cystectomy, the benefits on minimizing operative time, spilled opportunity, and postoperative complications. Laparoscopic techniques for large ovarian masses might be considered. The experience of the surgeon is also very important to prevent misdiagnosis or complication. Further follow up is mandatory for this simultaneous finding of ovarian endometriosis with coincidental dermoid cyst as a separate pathology in single ovary of such a nature. It also presents a challenge to the clinicians and to the pathologists.

关键词： endometriosis dermoid cyst cystectomy endobag

Examining unobserved factors associated with red light running in Vietnam:A latent class model analysis

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Transportation Safety and Environment 2022年第1期4卷 110-122页

作者： tien Dung chu Tomio Miwa Tuan Anh Bui Quang Phuc nguyen Quang Huy Vu Department of Highway and Traffic Engineering University of Transport and CommunicationsNo.3 Cau Giay StreetLang Thuong WardDong Da DistrictHanoi 10001Vietnam Institute of Materials and Systems for Sustainability Nagoya UniversityFuro-choChikusa-kuNagoya cityAichi Prefecture464-8603Japan

Red-light running(RLR)is a crucial violation that causes traffic accidents and *** factors that affect RLR is very significant to reduce the potential of this *** studies have paid considerable attention to the observable factors,but not to unobservable *** study aims to examine the effects of observable and unobservable factors on *** study uses a latent class model(LCM)to assign individuals into two classes—red-light-respectful and red-light-disrespectful road users—by surveying 751 respondents who use private transportation *** study incorporates psychological determinants into the LCM to account for unobservable *** contribution of this study is the in-depth investigation into law-respectful and law-disrespectful behaviours and intentional and unintentional *** a study has not yet been conducted in the existing *** addition,a comprehensive comparison of the LCM and a traditional ordered probit model was ***,the results suggest that the LCM is superior to the model that does not consider latent *** estimation results are in alignment with previous studies on RLR:males,younger drivers/riders,less educated road users and motorcyclists are more likely to run red *** analysis of the latent variables shows that surrounding conditions—the behaviour of other violators,the absence of traffic police,and long waiting times—increase the possibility of *** on these results,we provide suggestions to policymakers and traffic engineers:the implementation of enforcement cameras and penalties for violators are critical countermeasures to minimize the potential of RLR.

关键词： red light running(RLR) developing country latent class model(LCM) multiple indicator multiple cause(MIMIC)model latent variables(LVs) motorcycles(MCs) traffic violation

Verification of gene expression profiles for colorectal cancer using 12 internet public microarray datasets

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World Journal of Gastroenterology 2014年第46期20卷 17476-17482页

作者： Yu-tien Chang chung-Tay Yao Sui-Lung Su Yu-Ching Chou Chi-Ming chu Chi-Shuan Huang Harn-Jing Terng Hsiu-Ling Chou Thomas Wetter Kang-Hua Chen Chi-Wen Chang Yun-Wen Shih Ching-Huang Lai Division of Biomedical Statistics and Informatics School of Public HealthNational Defense Medical Center Department of Emergency Cathay General Hospital Department of Epidemiology School of Public HealthNational Defense Medical Center Division of Colorectal Surgery Cheng Hsin Rehabilitation Medical Center Advpharma Inc. Department of nursing Far Eastern Memorial Hospital Oriental Institute of Technology Department of Medical Informatics Faculty of MedicineUniversity of Heidelberg69120 HeidelbergGermany School of nursing College of MedicineChang Gung University

AIM: To verify gene expression profiles for colorectal cancer using 12 internet public microarray datasets.

关键词： Gene expression profiles Colorectal cancer Microarray Gene Expression Omnibus Gene Expression Omnibus Gene Expression Omnibus series

On THE SPECTRUM OF A nEUTROn TRAnSPORT OPERATOR AnD THE InCOMPLETEnESS OF ALL ITS RADICAL SUBSPACES

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Chinese Science Bulletin 1966年第11期24卷 484-488页

作者：朱广田阳名珠 Institute of Mathematics Academia Sinica Peking

There have been a lot of results concerning the spectral properties of the monoenergetic neutron transport operator with isotropic scattering in a uniform medium of spherical symmetry. The spectrum of the operator A c... 详细信息

关键词： spherical symmetry neutron isotropic concerning eigenvalue uniformly holds infinity absolutely

中国生态安全屏障体系建设现状、主要问题及对策建议

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生态学报 2023年第1期43卷 166-175页

作者：王毅巫金洪储诚进李添明中山大学生命科学学院广州510275 中山大学生态学院广州510006 中山大学有害生物控制与资源利用国家重点实验室广州510275 中山大学国家公园与自然教育研究院广州510275

中国生态安全屏障体系建设是生态文明建设的重要组成部分,在维护国家安全方面具有重大战略意义。研究从生态安全屏障功能特点、建设、监测与评估及规划和实施等方面阐述了我国生态安全屏障体系建设现状;分析了在生态安全屏障建设中,自... 详细信息

中国生态安全屏障体系建设是生态文明建设的重要组成部分,在维护国家安全方面具有重大战略意义。研究从生态安全屏障功能特点、建设、监测与评估及规划和实施等方面阐述了我国生态安全屏障体系建设现状;分析了在生态安全屏障建设中,自然生态系统的破坏、社会-生态系统脆弱性、生物多样性保护受到威胁、科技体系支撑不足、公众参与意识薄弱和保护与发展的矛盾等方面面临的主要问题和挑战;进而提出了基于生态安全格局的整体布局方略,指出了开展社会-生态脆弱性调查和评估的重要性,强调了国家公园在生态安全屏障体系建设的引领示范作用。最终,希望通过围绕生态文明建设,引导社会公众深度参与,构建“生态-生产-生活”统筹协调机制,以求积极探索生态安全屏障体系建设高质量、高速和可持续发展道路,迈向新时代生态安全屏障建设新征程。

关键词：生态安全格局生态文明生态安全屏障生物多样性保护协调发展

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Calculations of narrow-band transimissities and the Planck mean absorption coefficients of real gases using line-by-line and statistical narrow-band models

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Frontiers in Energy 2014年第1期8卷 41-48页

作者： Huaqiang chu Mingyan GU Huaichun ZHOU Fengshan LIU School of Energy and Environment Anhui University of TechnologyMa'anshan 243002 China Key Laboratory for Thermal Science and Power Engineering of Ministryof Education Tsinghua University Beijing 100084 China Insti-tute for Chemical Process and Environmental Technology NationalResearch Council Montreal Road Ottawa Ont. K1A 0R6 Canada

narrow-band transmissivities in the spectral range of 150 to 9300 cml and at a uniform resolution of 25 cm-1 were calculated using the statistical narrow-band （SnB） model with the band parameters of Soufiani and Taine, the more recent parameters of Andr6 and Vaillon, and the line-by-line （LBL） method along with the HITEMP-2010 spectroscopic database. Calculations of narrow-band transmissivity were conducted for gas columns of different lengths and containing different isothermal and non-isothermal CO2-H20-n2 mixtures at 1 atm. narrow-band transmissivities calculated by the SnB model are in large relative error at many bands. The more recent SnB model parameters of Andr6 and Vaillon are more accurate than the earlier parameters of Soufiani and Taine. The Planck mean absorption coefficients of CO2, H20, CO, and CH4 in the temperature range of 300 to 2500K were calculated using the LBL method and different versions of the high resolution transmission （HITRAn） and high-temperature spectroscopic absorption parameters （HITEMP） spectroscopic databases. The SnB model was also used to calculate the Planck mean absorption coefficients of these four radiating gases. The LBL results of the Planck mean absorption coefficient were compared with the classical results of tien and those from the SnB model.

关键词： transimissity HITEMP HITRAn Planckmean absorption coefficients

Development of niobium Oxide Coatings on Sand-Blasted Titanium Alloy Dental Implants

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Materials Sciences and Applications 2012年第5期3卷 301-305页

作者： Allen C. Mackey Robert L. Karlinsey tien-Mien G. chu Meoghan MacPherson Daniel L. Alge Department of Restorative Dentistry Indiana University School of Dentistry Indianapolis U.S.A. Indiana nanotech Indianapolis U.S.A Indiana nanotech Indianapolis U.S.A. Weldon School of Biomedical Engineering Purdue University West Lafayette U.S.A.

The purpose of this study was to use scanning electron microscopy (SEM) evaluation to determine the optimal anodizetion conditions needed to generate niobium oxide coatings on titanium alloy dental implant screws. Sand-blasted titanium alloy dental implants were anodized in dilute hydrofluoric acid (HF(aq)) solution using a Sorensen DLM 300-2 power supply. The HF concentration and anodization time were varied and the resulting implant surfaces were evaluated using a Jeol JSM-5310LV Scanning Electron Microscope to determine the ideal anodization conditions. While HF is necessary to facilitate oxide growth, increasing concentrations resulted in proportionate increases in coating delamination. In a similar manner, a minimum anodization time of 1 hour was necessary for oxide growth but longer times produced more delamination especially at higher HF(aq) concentrations. SEM imaging showed that implants anodized for 1 hour in a 0.1% HF(aq) aqueous solution had the best results. Anodization can be used to generate niobium oxide coatings on sand-blasted Ti alloy dental implants by balancing the competing factors of oxide growth and coating delamination. It is believed that these oxide coatings have the potential to improve osseointegration relative to untreated dental implants when evaluated in an in vivo study.

关键词： Anodization niobium Oxide Dental Implant Scanning Electron Microscopy