检索结果-南通市图书馆

Multi-Exposure Motion Estimation Based on Deep Convolutional Networks

Journal of Computer Science & Technology 2018年第3期33卷 487-501页

作者： Zhi-Feng Xie Yu-Chen Guo Shu-Han Zhang wen-Jun Zhang Li-zhuang Ma Department of Film and Television Engineering Shanghai University Shanghai 200072 China Shanghai Engineering Research Center of Motion Picture Special Effects Shanghai 200072 China Department of Software Science and Technology East China Normal University Shanghai 200062 China

In motion estimation, illumination change is always a troublesome obstacle, which often causes severely per- formance reduction of optical flow computation. The essential reason is that most of estimation methods fail to formalize a unified definition in color or gradient domain for diverse environmental changes. In this paper, we propose a new solution based on deep convolutional networks to solve the key issue. Our idea is to train deep convolutional networks to represent the complex motion features under illumination change, and further predict the final optical flow fields. To this end, we construct a training dataset of multi-exposure image pairs by performing a series of non-linear adjustments in the traditional datasets of optical.flow estimation. Our multi-exposure flow networks （MEFNet） model consists of three main components： low-level feature network, fusion feature network, and motion estimation network. The former two components belong to the contracting part of our model in order to extract and represent the multi-exposure motion features; the third component is the expanding part of our model in order to learn and predict the high-quality optical flow. Compared with many state- of-the-art methods, our motion estimation method can eliminate the obstacle of illumination change and yield optical flow results with competitive accuracy and time efficiency. Moreover, the good performance of our model is also demonstrated in some multi-exposure video applications, like HDR （high dynamic range） composition and flicker removal.

关键词： motion estimation optical flow convolutional neural network multi-exposure

来源：

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

针对工业信息物理系统中的拒绝服务攻击建立检测模型

引用

控制理论与应用 2020年第3期37卷 629-638页

作者：庄康熙孙子文江南大学物联网工程学院江苏无锡214122 物联网技术应用教育部工程研究中心江苏无锡214122

无线通信网络的脆弱性使工业信息物理系统(ICPS)的稳定性容易遭受拒绝服务(DoS)攻击的影响.为检测ICPS中的DoS攻击,本文基于反馈控制理论,采用卡尔曼滤波器和χ2检测器结合的检测方案建立攻击检测模型.卡尔曼滤波器用于去除环境噪声,并... 详细信息

无线通信网络的脆弱性使工业信息物理系统(ICPS)的稳定性容易遭受拒绝服务(DoS)攻击的影响.为检测ICPS中的DoS攻击,本文基于反馈控制理论,采用卡尔曼滤波器和χ2检测器结合的检测方案建立攻击检测模型.卡尔曼滤波器用于去除环境噪声,并得到测量残差;χ2检测器通过测量残差得到检测值,再结合攻击检测判决规则,判断系统是否受到DoS攻击.为证明所采用方法的有效性,以球杆系统为被控对象,通过Simulink/TrueTime进行仿真,并使用欧几里得检测器作对比实验.实验结果表明,基于反馈控制理论的攻击检测模型可以有效地检测ICPS中的DoS攻击;相较于欧几里得检测器,χ2检测器能够更好地检测DoS攻击.

关键词：工业信息物理系统 DoS攻击卡尔曼滤波器 χ2检测器

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Syndecan 4-c-ros oncogene 1 fusion as a mechanism of acquired resistance in epidermal growth factor receptor mutant lung adenocarcinoma

引用

Chinese Medical Journal 2019年第24期132卷 3015-3017页

作者： You-Cai Zhu Chun-Wei Xu Qu-Xia Zhang wen-Xian Wang Lei Lei Wu zhuang Department of Thoracic Disease Center Zhejiang Rongjun HospitalJiaxingZhejiang 314000China Department of Pathology Fujian Cancer HospitalFujian Medical University Cancer HospitalFuzhouFujian 350014China Department of Chemotherapy Zhejiang Cancer HospitalHangzhouZhejiang 310022China Department of Medical Thoracic Oncology Fujian Cancer HospitalFujian Medical University Cancer HospitalFuzhouFujian 350014China.

To the Editor:A 37-year-old Chinese woman,a nonsmoker,presented with adenocarcinoma of the left lung(stage IV)[Figure 1A],malignant pleural effusion,and multiple bone metastases in December 2014.Deoxyribonucleic acid sequencing of the tumor biopsy revealed an epidermal growth factor receptor(EGFR)exon 19 deletion,and treatment with gefitinib was consequently initiated in December 2014.There were no treatmentrelated side effects except for a grade 1 rash,and stable disease was achieved.Unfortunately,the patient did not experience long-term benefits and developed disease progression after only two months.A follow-up examination showed that extracranial disease and a small intracranial lesion had developed gradually.The patient then received whole-brain radiotherapy(30 Gy in ten fractions)and four cycles of single-agent pemetrexed in April 2015.Stable disease was achieved,which coincided with an improvement in the patient’s cough,shortness of breath,and general condition.The chemotherapy course was changed to two cycles of pemetrexed combined with cisplatin.A partial response(PR)was achieved,and the patient was treated with 14 cycles of pemetrexed alone as maintenance chemotherapy.The follow-up evaluations showed the patient’s condition to be stable;however,the patient’s disease progressed after 23 months.A computed tomography(CT)scan in March 2017 revealed that both the lung lesion and the malignant pleural effusion had increased in size[Figure 1B].The subsequent biopsy specimen was subjected to next-generation sequencing(NGS)and a Syndecan 4-c-ros oncogene 1(SDC4-ROS1)rearrangement was detected[Figure 1C].The patient then received crizotinib in April 2017,and a PR was achieved[Figure 1D].A CT scan done in August 2018 indicated the progression of the primary lesion in the left lung and malignant pleural effusion.However,the growth of the remaining lesions remained stable.

关键词： adenocarcinoma Figure smoke

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

资源竞争还是制度规范--慈善基金会在组织网络中的信息公开行为

引用

东北师大学报（哲学社会科学版） 2023年第1期 165-178页

作者：桑壮程文浩清华大学公共管理学院北京100084

随着公益慈善行业和信息技术的发展,我国几千家不同类型、不同地域、不同行业的慈善基金会之间产生了复杂的合作、竞争等关系,这些关系共同组成了我国基金会组织网络的宏大图景。网络治理中的问责缺失,是困扰公共管理学界的重要问题。... 详细信息

随着公益慈善行业和信息技术的发展,我国几千家不同类型、不同地域、不同行业的慈善基金会之间产生了复杂的合作、竞争等关系,这些关系共同组成了我国基金会组织网络的宏大图景。网络治理中的问责缺失,是困扰公共管理学界的重要问题。关于基金会在网络中的信息公开行为,已有研究主要从合法性理论和资源依赖理论探讨。本研究通过对我国慈善基金会的组织网络进行分类,利用社会网络分析和事件史分析,对基金会全样本进行实证研究后发现,基金会参与捐赠网络、沙龙论坛网络和互联网公募平台与基金会建立官网的信息公开行为呈正相关,基金会参与理事互嵌网络不利于其信息公开行为的出现。同地区其他基金会的信息公开行为,以及政府参与组织的组织网络,会对基金会的信息公开行为产生横向、纵向的积极推动作用,从而验证了资源依赖理论和合法性机制在组织网络中对基金会产生的作用,解决了科层制问责带来的问题,扩展了制度主义理性选择学派的中观视角。

关键词：基金会组织网络信息公开行为

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Therapeutic Targeting of CDK12/CDK13 in Epithelial Ovarian Cancer

Therapeutic Targeting of CDK12/CDK13 in Epithelial Ovarian C...

引用

2021年中国肿瘤标志物学术大会暨第十五届肿瘤标志物青...

作者： lin Cheng wen Di guanglei zhuang Department of Obstetrics and Gynecology Ren Ji Hospital School of Medicine Shanghai Jiao Tong University

Novel treatment options for epithelial ovarian cancer are urgently needed to improve patient outcome.Cyclin-dependent kinases 12 and 13(CDK12 and CDK13) play critical roles in the regulation of gene transcription. However, the absence of oral CDK12 and CDK13 inhibitors has hindered the ability to investigate the consequences of their inhibition in healthy cells and cancer cells. Here, we report an oral CDK12 and CDK13 covalent inhibitor, ZSQ836. Coincident with transcriptional perturbation,ZSQ836 dramatically induced apoptotic cell death. Knockout of CCNK or both CDK12 and CDK13 decreases proliferation of ovarian cancer cells in vitro and tumor growth in vivo. Mechanistically,inhibition or loss of CDK12/CDK13 suppresses the expression of core DNA damage response proteins.This provokes a phenotype that results in deficiencies in DNA damage repair, promoting synergy with DNA-damaging chemotherapy and PARP inhibitors. We also find single inhibition of CDK12 or CDK13 induced transcriptional responses associated with cellular growth signaling pathways and/or DNA damage, with minimal effects on cell viability. In contrast, dual kinase inhibition potently induced cell death, which was associated with extensive genome-wide transcriptional changes. At the molecular level, dual kinase inhibition resulted in the loss of POLⅡ CTD phosphorylation and greatly reduced POLⅡ elongation rates and processivity. These data define substantial redundancy between CDK12 and CDK13 and identify both as fundamental regulators of global POLⅡ processivity and transcription elongation.

关键词： ovarian cancer target therapy CDK12

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Myocarditis as an extraintestinal manifestation of ulcerative colitis:A case report and review of the literature

引用

World Journal of Clinical Cases 2022年第27期10卷 9750-9759页

作者： You-Yang Wang wen Shi Jian Wang Yue Li zhuang Tian Yang Jiao Department of General Internal Medicine Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Department of Gastroenterology Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Department of Radiology Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Department of Cardiology and International Medical Service Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China

BACKGROUND Although extraintestinal manifestations of inflammatory bowel disease(IBD) are well documented,myocarditis has only rarely been reported as an extraintestinal manifestation,and it can be fatal.The various clinical presentations and causes of myocarditis in IBD patients complicate making a correct and timely diagnosis.CASE SUMMARY Here we report a 15-year-old boy who presented with myocarditis as the initial presentation of a relapse of ulcerative colitis.In reviewing the literature for cases of myocarditis complicating IBD,we found 21 other cases,allowing us to expand our understanding of the clinical presentation,diagnosis,management,and outcomes of this rare condition.The most frequent diagnostic clues for myocarditis in IBD patients are dyspnea,chest pain,tachycardia,raised cardiac biomarkers,and abnormalities on trans-thoracic echocardiography.Additionally,we discuss the etiology of myocarditis in IBD patients,which include an extraintestinal manifestation,the adverse effects of mesalamine and infliximab,selenium deficiency,and infection,to help provide a framework for diagnosis and management.CONCLUSION Myocarditis as an extraintestinal manifestation of IBD can be life-threatening.Trans-thoracic echocardiogram and cardiac magnetic resonance may assist its diagnosis.

关键词： Inflammatory bowel disease Myocarditis Ulcerative colitis Crohn’s disease Extraintestinal manifestation Case report

来源：

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

Retrieval-balloon-assisted enterography in post-pancreaticoduodenectomy endoscopic retrograde cholangiopancreatography

引用

World Journal of Gastroenterology 2012年第47期18卷 7109-7112页

作者： Ming zhuang wen-Jie Zhang Jun Gu Ying-Bin Liu XueFeng Wang Department of General Surgery Xin Hua Hospital Affiliated to Shanghai Jiaotong University School of Medicine

This case reports an application of conventional duodenoscope in a post pancreaticoduodenectomy patient with the help of retrieval balloon assisted enterography.The 56-year-old woman had pancreaticoduodenectomy with Child reconstruction 9 mo ago because of pancreatic adenocarcinoma and now there are recurrent enlarged lymph nodes in the anastomotic stoma of hepaticojejunostomy.Considering the patient's late-stage cancer,a plastic stent was then successfully placed there to drainage.The main challenge in this case was the extremely long afferent loop and blind cannulation through the anastomotic stoma of hepaticojejunostomy.Retrieval balloon assisted enterography is very helpful for duodenoscope going through the reconstructed intestinal tract and for the cannulation.After two weeks,the patient remained free of painful symptoms and free of fever.Liver function improved well.Four months after the placement of stent,the patient died of cachexia without jaundice,fever and abdominal pain according to her daughter's statement.

关键词：十二指肠切除术小肠检索球囊造影胆管内镜

来源：

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

1946—1947年山东解放区立功运动面临的困境及其应对

引用

军事历史研究 2023年第3期37卷 54-62页

作者：张春鹏庄文北京大学马克思主义学院北京100871

为动员不同群体支援解放战争,中共山东省委和山东军区在借鉴和改造古代功劳簿制度的基础上,吸纳创模运动的经验教训,创造了立功运动这一动员方式。但运动开展初期也面临诸多困境,个别干部对立功运动重视不足,部分群众立功积极性不高,实... 详细信息

为动员不同群体支援解放战争,中共山东省委和山东军区在借鉴和改造古代功劳簿制度的基础上,吸纳创模运动的经验教训,创造了立功运动这一动员方式。但运动开展初期也面临诸多困境,个别干部对立功运动重视不足,部分群众立功积极性不高,实际过程中存在着抢功、争功、好人主义等问题。立功运动的困境也折射出乡村革命中战争动员的复杂性。为此,山东省委和军区改进和完善立功运动,开展深入持久的政治动员,加强立功运动组织建设,准确科学组织记功评功、及时奖功庆功,从而推动了运动的发展。更为关键的是,立功运动进一步密切了中共与民众间的关系,支援了解放战争的胜利。

关键词：解放战争山东解放区立功运动民众动员

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Corrosion resistance of a superhydrophobic micro-arc oxidation coating on Mg-4Li-1Ca alloy

引用

Journal of Materials Science & Technology 2017年第11期33卷 1263-1271页

作者： Lan-Yue Cui Han-Peng Liu wen-Le Zhang zhuang-zhuang Han Mei-Xu Deng Rong-Chang Zeng Shuo-Qi Li Zhen-Lin Wang College of Materials Science and Engineering Shandong University of Sdence and Technology Qingdao 266590 China College of Civil Engineering and Architecture Shandong University of Science and Technology Qingdao 266590 China College of Materials Science and Engineering Chongqing University of Technology Chongqing 400065 China

A micro-arc oxidation（MAO）/zinc stearate（ZnSA） composite coating was fabricated via MAO processing and subsequent sealing with electrodeposition of a superhydrophobic ZnSA. The surface morphologies,chemical composition and corrosion resistance of the coatings were investigated using field-emission scanning electron microscopy, Fourier transform infrared, X-ray diffraction and electrochemical and hydrogen evolution measurements. Results indicated that the MAO coating was efficiently sealed by the following superhydrophobic ZnSA coating. The MAO/ZnSA composite coating significantly enhanced the corrosion resistance of Mg alloy Mg-4 Li-1 Ca due to its superhydrophobic function. Additionally, corrosion mechanism was suggested and discussed for the composite coating.

关键词： Magnesium alloys Micro-arc oxidation Superhydrophobic coating Corrosion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

基于GRA-KL-TOPSIS法的三峡外迁移民社会适应性评价

引用

中国农村水利水电 2023年第4期 279-284页

作者：王壮壮姚凯文张丹华北电力大学水利与水电工程学院北京102206

科学合理地评价三峡外迁移民社会适应性对于维护社会的稳定和促进移民可持续发展是十分重要的。首先结合相关文献、实地调研数据以及专家意见建立三峡外迁移民社会适应性评价指标体系;然后利用OWA-AHP法、主成分分析法和博弈论融合权重... 详细信息

科学合理地评价三峡外迁移民社会适应性对于维护社会的稳定和促进移民可持续发展是十分重要的。首先结合相关文献、实地调研数据以及专家意见建立三峡外迁移民社会适应性评价指标体系;然后利用OWA-AHP法、主成分分析法和博弈论融合权重法确定各指标权重,同时将GRA、KL距离与TOPSIS法结合,来构建相对熵(KL距离)替代欧式距离和一种新的相对贴近度形式,对评价对象进行排序和评价;最后以广东省三峡外迁移民为例进行分析。结果表明,该模型能客观地反映三峡外迁移民社会适应性状况,并且得到的评价结果与实际情况相符,验证了该模型的有效性和实用性。文中研究成果、指标体系及评价模型可以为水库移民社会适应性课题提供行之有效的思路。

关键词：三峡外迁移民社会适应性 OWA-AHP法博弈论 GRA-KL-TOPSIS法

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：