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Stability and Generalization of Hypergraph Collaborative Networks

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Machine Intelligence Research 2024年第1期21卷 184-196页

作者： Michael K.Ng Hanrui Wu andy Yip Institute of Data Science The University of Hong KongHong KongChina Department of Mathematics The University of Hong KongHong KongChina College of Information Science and Technology Jinan UniversityGuangzhou 510006China

Graph neural networks have been shown to be very effective in utilizing pairwise relationships across ***,there have been several successful proposals to generalize graph neural networks to hypergraph neural networks to exploit more com-plex *** particular,the hypergraph collaborative networks yield superior results compared to other hypergraph neural net-works for various semi-supervised learning *** collaborative network can provide high quality vertex embeddings and hyperedge embeddings together by formulating them as a joint optimization problem and by using their consistency in reconstructing the given *** this paper,we aim to establish the algorithmic stability of the core layer of the collaborative network and provide generaliz--ation *** analysis sheds light on the design of hypergraph filters in collaborative networks,for instance,how the data and hypergraph filters should be scaled to achieve uniform stability of the learning *** experimental results on real-world datasets are presented to illustrate the theory.

关键词： Hypergraphs vertices hyperedges collaborative networks graph convolutional neural networks(CNNs) stability generalization guarantees

Determinants of malaria from environmental and poverty aspects in Indonesia:A spatiotemporal perspective,2016-2020

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亚太热带医药杂志（英文版） 2024年第6期17卷 256-267页

作者： Afi Nursafingi Prima Widayani Sidiq Purwoko andy Bhermana Research Center for Public Health and Nutrition Research Organization for HealthNational Research and Innovation AgencyJakartaIndonesia Department of Geographic Information Science Faculty of GeographyUniversitas Gadjah MadaYogyakartaIndonesia Center for Food Crops Research Organization for Agriculture and FoodNational Research and Innovation AgencyJakartaIndonesia

Objective:To investigate the environmental and social aspects of poverty contributing to malaria incidence in Indonesia from 2016 to 2020.Methods:Random forest regression was used to analyse the independent variables contributing to malaria *** conditions were extracted from remotely sensed data,including vegetation,land temperature,soil moisture,precipitation,and *** contrast,the social aspects of poverty were obtained from government statistical reports.Results:From 2016 to 2020,the contribution of each environmental and social aspect of poverty to malaria incidence fluctuated ***,the top three essential variables were people aged 15 years and above,experiencing poverty(variable importance/VI=32.0％),people experiencing poverty who work in the agricultural sector(VI=14.4％),and precipitation(VI=9.8％).It was followed by people experiencing poverty who are unemployed(VI=9.2％),land temperature(VI=5.2％),people experiencing poverty who have low education(VI=8.0％),soil moisture(VI=7.4％),elevation(VI=6.0％),and vegetation(VI=3.8％).Conclusions:Poverty and variables related to climate have become the crucial determinants of malaria in *** government must strengthen malaria surveillance through climate change mitigation and adaptation programs and accelerate poverty alleviation programs to support malaria elimination.

关键词： Climate Indonesia Malaria Poverty Random forest

携带横向轨道角动量的时空局域波包的传输特性(特邀)

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光学学报 2024年第10期44卷 294-300页

作者：张年佳曹前 Chong andy 詹其文上海理工大学光电信息与计算机工程学院上海200093 釜山国立大学物理系韩国釜山46241

光学轨道角动量(OAM)可以纵向OAM的形式存在于空间涡旋光束中,或以横向OAM的形式存在于时空光涡旋波包中。与涡旋光束不同,时空光涡旋波包在传播过程中同时受到衍射和色散效应的影响,造成波包在时空域内的展宽,并且时空光涡旋波包携带... 详细信息

光学轨道角动量(OAM)可以纵向OAM的形式存在于空间涡旋光束中,或以横向OAM的形式存在于时空光涡旋波包中。与涡旋光束不同,时空光涡旋波包在传播过程中同时受到衍射和色散效应的影响,造成波包在时空域内的展宽,并且时空光涡旋波包携带的横向OAM也会在传播过程中分裂。这两点限制了横向OAM在其他研究领域的应用。本文引入并研究了携带横向OAM的三维时空局域波包,此波包可以同时克服衍射与色散效应造成的时空域三维变化。在传播过程中,该时空局域波包的时空域分布不变,且在遇到障碍物后也能快速重新恢复到原有的状态,具有传播不变以及自恢复的特性。本文对时空局域波包的传播过程以及经过障碍物后的恢复过程进行了数值模拟仿真,证实了其传播不变特性和自恢复特性。这种携带横向OAM的三维时空局域波包为横向OAM未来的利用提供了新的机遇,有望应用于光通信、量子光学、光学成像等领域。

关键词：横向光学轨道角动量三维时空局域波包传播不变自恢复

Entomological Survey of Malaria Vectors within the Kumasi Metropolitan AreamA Study of Three Communities： Emena, Atonsu and Akropong

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Journal of Environmental Science and Engineering(B) 2012年第2期1卷 144-154页

作者： Samuel C.K. Tay Sylvester K. Danuor andy morse Caminade Caminade Kingsley Badu Harry Hoffman Abruquah School of Medical Sciences Kwame Nkrumah University of Science and Technology Kumasi 40100 Ghana Meteorology and Climate Science Unit Department of Physics Kumasi 40100 Ghana School of Environmental Sciences University of Liverpool Liverpool L69 7ZT UK Climate and Human Research Unit Centre for Global Health Kenya Medical Research Institute Kisumu 40100 Kenya Department of Pure and Applied Biology Kwame Nkrumah University of Science and Technology Kumasi 40100 Ghana University Hospital Kwame Nkrumah University of Science and Technology Kumasi 40100 Ghana

携带横向轨道角动量的时空局域波包的传输特性（特邀）

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光学学报 2024年第10期 302-308页

作者：张年佳曹前 Chong andy 詹其文上海理工大学光电信息与计算机工程学院釜山国立大学物理系

光学轨道角动量（OAM）可以纵向OAM的形式存在于空间涡旋光束中，或以横向OAM的形式存在于时空光涡旋波包中。与涡旋光束不同，时空光涡旋波包在传播过程中同时受到衍射和色散效应的影响，造成波包在时空域内的展宽，并且时空光涡旋波... 详细信息

光学轨道角动量（OAM）可以纵向OAM的形式存在于空间涡旋光束中，或以横向OAM的形式存在于时空光涡旋波包中。与涡旋光束不同，时空光涡旋波包在传播过程中同时受到衍射和色散效应的影响，造成波包在时空域内的展宽，并且时空光涡旋波包携带的横向OAM也会在传播过程中分裂。这两点限制了横向OAM在其他研究领域的应用。本文引入并研究了携带横向OAM的三维时空局域波包，此波包可以同时克服衍射与色散效应造成的时空域三维变化。在传播过程中，该时空局域波包的时空域分布不变，且在遇到障碍物后也能快速重新恢复到原有的状态，具有传播不变以及自恢复的特性。本文对时空局域波包的传播过程以及经过障碍物后的恢复过程进行了数值模拟仿真，证实了其传播不变特性和自恢复特性。这种携带横向OAM的三维时空局域波包为横向OAM未来的利用提供了新的机遇，有望应用于光通信、量子光学、光学成像等领域。

关键词：横向光学轨道角动量三维时空局域波包传播不变自恢复

携带横向轨道角动量时空局域波包的传输特性研究

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光学学报 2024年

作者：张年佳曹前 andy CHONG 詹其文釜山国立大学物理系上海理工大学光电信息与计算机工程学院

光学轨道角动量(OAM)可以纵向OAM的形式存在于空间涡旋光束，或以横向OAM的形式是存在于时空光涡旋波包。与涡旋光束不同，时空光涡旋波包在传播过程中同时受到衍射和色散效应的影响，造成波包在时空域内的展宽，并且时空光涡旋波包携... 详细信息

光学轨道角动量(OAM)可以纵向OAM的形式存在于空间涡旋光束，或以横向OAM的形式是存在于时空光涡旋波包。与涡旋光束不同，时空光涡旋波包在传播过程中同时受到衍射和色散效应的影响，造成波包在时空域内的展宽，并且时空光涡旋波包携带的横向OAM也会在传播过程中分裂。这两点限制了横向OAM在其他研究领域的应用。本文引入并研究了携带横向OAM的三维时空局域波包，波包可以同时克服衍射与色散效应造成的时空域三维变化。在传播过程中，时空局域波包的时空域分布不变，且在遇到障碍物后也能快速重新恢复到原有的状态，具有传播不变以及自恢复的特性。本文对时空局域波包的传播过程以及经过障碍物后的恢复过程进行了数值模拟仿真，证实了其传播不变特性和自恢复特性。这种携带横向OAM的三维时空局域波包为横向OAM的未来利用提供的新的机遇，有望应用于在光学通信、量子光学、光学成像等领域。

关键词：横向光学轨道角动量三维时空局域波包传播不变自恢复

香港地区中学文凭考试英语口语实施网考的探索研究

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中国考试 2024年第2期 47-55页

作者： Cameron Smart Jennifer Shiu Matthew Drysdale andy Chan 吴泓霖(译) 香港考试及评核局中国香港999077 教育部教育考试院北京100084

香港地区中学文凭考试(Hong Kong Diploma of Secondary Education Examination,HKDSE)英语口语公开考试中的小组互动部分受疫情等多种因素的影响而无法正常开展,需要探索其他口试形式。本研究探讨使用基于网络的协作视频会议工具Zoom... 详细信息

香港地区中学文凭考试(Hong Kong Diploma of Secondary Education Examination,HKDSE)英语口语公开考试中的小组互动部分受疫情等多种因素的影响而无法正常开展,需要探索其他口试形式。本研究探讨使用基于网络的协作视频会议工具Zoom进行网考口试(Internet-delivered Speaking Test)的可能性方案。选取40名中学生进行网考口试的试测,由经验丰富的口试考官对考生表现进行评分,并使用基于学习者语料库的方法研究口试考生在话轮转换和语法准确性方面的表现。通过对考生话语的语言分析,以及从考生处和考官处分别收集的反馈结果,证实网考口试是可靠且可行的。

关键词：香港地区中学文凭考试口语测试网考口试面对面口试

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通往100%可再生能源之路

科技纵览 2024年第5期 52-59,4页

作者： Benjamin Kroposki andy Hoke 不详

构网型逆变器可以满足我们对电网的需求。由考艾岛公用事业合作社运营的卡帕亚太阳能+储能设施(前页图)存储了52兆瓦时的能量,采用的是特斯拉的Powerpack2电池系统。在理想条件下,该设施的光伏板(本页上图)的发电功率为13兆瓦。另一座... 详细信息

构网型逆变器可以满足我们对电网的需求。由考艾岛公用事业合作社运营的卡帕亚太阳能+储能设施(前页图)存储了52兆瓦时的能量,采用的是特斯拉的Powerpack2电池系统。在理想条件下,该设施的光伏板(本页上图)的发电功率为13兆瓦。另一座太阳能+储能设施位于考艾岛西南部的美国海军太平洋导弹靶场(本页下图)。

关键词：可再生能源电池系统特斯拉发电功率公用事业太阳能光伏板逆变器

Molecular Characterization of Gastrointestinal Stromal Tumors (Gist) and Contribution of Immunohistochemistry in Congolese from Kinshasa

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Open Journal of Gastroenterology 2024年第4期14卷 109-116页

作者： Rive Lukuaku Jérémie Okumadi Fabrice Bokambandja andy Mbangama Vincent Mbatu Georges Mvumbi Jean-Louis Mumbere David Azako Serge Pezo Dieudonné Mvumbi Faculty of Medicine Bel Campus Technological University Kinshasa DR Congo Department of Anatomy and Pathological Cytology University Clinics of Kinshasa Kinshasa DR Congo Department of Gyneco-Obstetrics University Clinics of Kinshasa Kinshasa DR Congo Molecular Biology Department Faculty of Medicine University of Kinshasa Kinshasa DR Congo Institute of Medical Immunology Free University of Brussels Ixelles Belgium

Introduction: The differentiation of digestive tumors very often requires the use of techniques currently not widely in use in the Democratic Republic of Congo (DRC), such as immunohistochemistry. This is perfectly verified for GISTs whose precise, or at least highly certain, diagnosis can only be made using immunohistochemical markers. This underuse of these techniques due to lack of equipment and human skills explains the limited epidemiological data available to date, thus leading to untargeted and too often late treatment of patients. Research question: What contribution can immunohistochemical markers make to the diagnosis of digestive tract tumours? Objective: Discuss the contribution of immunohistochemical markers in the diagnosis of GIST and provide basic data on the epidemiology of these nosological entities in Kinshasa. Methodology: This was a retrospective study carried out at the LEBOMA private anatomy and pathological cytology centre. The main inclusion criterion was any digestive tract block or slide whose diagnosis of GIST had been requalified after review by at least 2 pathologists. An immuhistochemical study was performed using an automated technique (with a Ventana XT machine) using a panel of antibodies: CD-117 and DOG-1 which are listed in the literature as strongly correlated with the occurrence of GIST, all slides were made at Hj Hospital using an OLYMPUS BX41 co-observation microscope. Results: Of 601 cases of digestive tumors recorded during the concerned period, 32 (5.32%) concerned GIST. This prevalence was confirmed by our immunohistochemical results where the expression of CD117 and that of DOG-1 were positive in 90.6% and 100% of cases which prevalence is high compared with the worldwide prevalence according to the literature, respectively. The distribution of the patients concerned was made with a sex ratio of 1.6 women/men with a median age of 53 years. Most cases (81%) had a gastric location and were fusiform GISTs. Conclusion: Gastro

关键词： Digestive Tumors GIST Immunohistochemistry CD117 DOG-1