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Video Conference System in Mixed Reality Using a Hololens

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Computer Modeling in Engineering & Sciences 2023年第1期134卷 383-403页

作者： Baolin Sun xuesong gao Weiqiang Chen Qihao Sun Xiaoxiao Cui HaoGuo Cishahayo Remesha Kevin Shuaishuai Liu Zhi Liu School of Information Science and Engineering Shandong UniversityQingdao266000China State Key Laboratory of Digital Multi-Media Technology Hisense Co.Ltd.Qingdao266000China

The mixed reality conference system proposed in this paper is a robust,real-time video conference application software that makes up for the simple interaction and lack of immersion and realism of traditional video conference,which realizes the entire process of holographic video conference from client to cloud to the *** paper mainly focuses on designing and implementing a video conference system based on AI segmentation technology and mixed *** mixed reality conference system components are discussed,including data collection,data transmission,processing,and mixed reality *** data layer is mainly used for data collection,integration,and video and audio *** network layer uses Web-RTC to realize peer-to-peer data *** data processing layer is the core part of the system,mainly for human video matting and human-computer interaction,which is the key to realizing mixed reality conferences and improving the interactive *** presentation layer explicitly includes the login interface of the mixed reality conference system,the presentation of real-time matting of human subjects,and the presentation *** the mixed reality conference system,conference participants in different places can see each other in real-time in their mixed reality scene and share presentation content and 3D models based on mixed reality technology to have a more interactive and immersive experience.

关键词： Mixed reality AI segmentation hologram video conference Web-RTC

First China-Arab Friendship Conference Held in Khartoum

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Voice of Friendship 2007年第2期 4-7页

作者： gao xuesong

The first China-Arab Friendship Conference sponsored by the China-Arab Friendship Association(CAFA) and the League of Arab States(LAS),supported by the foreign ministries of China and Arab countries and organized by the Sudanese Council for International People’s Friendship was held in Khartoum,capital of Sudan from November 28 to 29,*** the first gathering of the Chinese and Arab friendship organizations,the Conference is of great significance and a new milestone in the history of the friendly people-to-people exchanges between China and Arab countries.

关键词： exchanges League milestone friendly organized Suda

Delegation of Iran-China Friendship Society Visits China

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Voice of Friendship 2004年第1期 25-26页

作者： gao xuesong

At the invitation of the CPAFFC, a 2-member del-egation of the Iran-China Friendship Society (ICFS) led by its President Ahad Mohammadi paid a goodwill visit to China from October 9 to 16, 2003. CPAFFC Vice President ... 详细信息

关键词： invitation delegation visit president exchanges to

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8例血色病患者临床与基因突变特征分析

实用肝脏病杂志 2024年第3期27卷 386-389页

作者：高萍高学松张亦瑾孙磊刘楠李洪杰刘亚平高丽丽段雪飞首都医科大学附属北京地坛医院综合科北京市100015 首都医科大学附属北京地坛医院病理科北京市100015

目的探讨血色病(HC)患者的临床特点,以提高临床诊治水平。方法2012年~2022年我院诊治的8例HC患者,对其临床特征、铁生化指标、腹部影像学、肝组织病理学和基因检测结果进行分析。结果8例患者均为男性,其中原发性血色病(HHC)3例,继发性... 详细信息

目的探讨血色病(HC)患者的临床特点,以提高临床诊治水平。方法2012年~2022年我院诊治的8例HC患者,对其临床特征、铁生化指标、腹部影像学、肝组织病理学和基因检测结果进行分析。结果8例患者均为男性,其中原发性血色病(HHC)3例,继发性血色病(SHC)5例;乏力、肝脾肿大和皮肤色素沉着为其常见的临床表现;5例进展至肝硬化,2例合并糖尿病,1例合并多发性关节炎;5例血清铁(ST)水平升高,8例均有不同程度转铁蛋白饱和度(TSAT)和血清铁蛋白(SF)水平升高;8例肝组织均显示铁过多沉积,腹部影像学均提示肝脏铁沉积表现;3例基因检测提示基因突变,支持HHC诊断;放血或驱铁治疗,1例病情好转,1例失访,1例死亡,5例SHC患者病情相对稳定。结论了解HC的临床特征,对原因不明的肝损害患者及时行肝组织和基因检测,可帮助诊断。

关键词：血色病临床特征影像学基因检测诊断

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The Teaching and Learning of Chinese as a Second or Foreign Language:The Current Situation and Future Directions

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Frontiers of Education in China 2020年第1期15卷 1-13页

作者： GONG Yang LAI Chun xuesong gao Faculty of Education University of MacaoMacao SARChina Faculty of Education The University of Hong KongHong Kong SARChina School of Education The University of New South WalesSydneyNSW 2052Australia

In this opening commentary,we highlight the development of the teaching and learning of Chinese as a second or foreign language(CSL/CFL),which has attracted much attention from researchers,language educators,and other stakeholders *** contribute to this ongoing examination and discussion,this special issue documents the collective efforts of scholars in different educational contexts to review six critical issues in teaching and learning CSL/CFL:learning and instruction of reading Chinese as an additional language,Chinese character teaching and learning,learner identity in CSL/CFL education,teaching and learning Chinese through immersion,technology assisted CSL/CFL teaching and learning,and mobile assisted learning *** contend that all efforts to address these critical issues require constant examination to facilitate further development in CSL/CFL education around the world.

关键词： teaching and learning Chinese as a second or foreign language(CSL/CFL) review future directions research agenda

Fault diagnosis using a probability least squares support vector classification machine

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Mining Science and Technology 2010年第6期20卷 917-921页

作者： gao Yang, WANG xuesong, CHENG Yuhu, PAN Jie School of Information and Electrical Engineering, China University of Mining & Technology, Xuzhou 221116, China School of Information and Electrical Engineering China University of Mining & Technology Xuzhou 221116 China

Coal mines require various kinds of machinery. The fault diagnosis of this equipment has a great impact on mine production. The problem of incorrect classification of noisy data by traditional support vector machines is addressed by a proposed Probability Least Squares Support Vector Classification Machine (PLSSVCM). Samples that cannot be definitely determined as belonging to one class will be assigned to a class by the PLSSVCM based on a probability value. This gives the classification results both a qualitative explanation and a quantitative evaluation. Simulation results of a fault diagnosis show that the correct rate of the PLSSVCM is 100%. Even though samples are noisy, the PLSSVCM still can effectively realize multi-class fault diagnosis of a roller bearing. The generalization property of the PLSSVCM is better than that of a neural network and a LSSVCM.

关键词： fault diagnosis probability least squares support vector classification machine roller bearing

Primary School English Teachers＇Research Engagement

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基础教育外语教学研究 2012年第9期 28-36页

作者： xuesong gao Alice Wai Kwan Chow

English Vocabulary Learning Strategy Use in a Chinese Key Middle School

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Chinese Journal of Applied Linguistics 2013年第1期36卷 86-105页

作者： gao xuesong LIU Honggang ZHU Fenmei The University of Hong Kong Hong Kong SAR Northeast Normal University The Middle School attached to Northern Jiaotong University

This paper reports on a mixed method inquiry into the use of vocabulary learning strategies and their development as strategic vocabulary learners in a key middle school on the Chinese mainland. In the inquiry, 475 first year junior secondary school pupils （247 boys and 228 girls） were surveyed about their strategy use in learning English vocabulary. Sixteen pupils （8 boys and 8 girls） participated in paired semi-structured interviews about their experiences of learning English vocabulary. Drawing on socio-cultural perspectives on language learning, the inquiry established the interconnections between the participants＇ strategy use and beliefs and identified the roles that agency played in their vocabulary learning. The analysis of interview data further revealed that the participants＇ strategy use emerged from interaction between their agency and the mediation of contextual resources and social agents including parents and teachers. These findings suggest that it is important for language teachers to collaborate with social agents such as parents in their efforts to support young learners＇ strategic vocabulary learning.

关键词： agency context sociocultural perspectives vocabulary learning strategies mixed-method study

Defects evolution in n-type 4H-SiC induced by electron irradiation and annealing

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Journal of Semiconductors 2024年第7期45卷 77-83页

作者： Huifan Xiong xuesong Lu Xu gao Yuchao Yan Shuai Liu Lihui Song Deren Yang Xiaodong Pi State Key Laboratory of Silicon and Advanced Semiconductor Materials&School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China Key Laboratory of Power Semiconductor Materials and Devices of Zhejiang Province&Institute of Advanced Semiconductors ZJU-Hangzhou Global Scientific and Technological Innovation CenterZhejiang UniversityHangzhou 311200China

Radiation damage produced in 4H-SiC by electrons of different doses is presented by using multiple characterization techniques. Raman spectra results indicate that SiC crystal structures are essentially impervious to 10 Me V electron irradiation with doses up to 3000 kGy. However, irradiation indeed leads to the generation of various defects, which are evaluated through photoluminescence(PL) and deep level transient spectroscopy(DLTS). The PL spectra feature a prominent broad band centered at 500 nm, accompanied by several smaller peaks ranging from 660 to 808 nm. The intensity of each PL peak demonstrates a linear correlation with the irradiation dose, indicating a proportional increase in defect concentration during irradiation. The DLTS spectra reveal several thermally unstable and stable defects that exhibit similarities at low irradiation ***, after irradiating at the higher dose of 1000 kGy, a new stable defect labeled as R_(2)(Ec-0.51 eV) appeared after annealing at 800 K. Furthermore, the impact of irradiation-induced defects on SiC junction barrier Schottky diodes is discussed. It is observed that high-dose electron irradiation converts SiC n-epilayers to semi-insulating layers. However, subjecting the samples to a temperature of only 800 K results in a significant reduction in resistance due to the annealing out of unstable defects.

关键词： 4H-SiC deep level transient spectroscopy(DLTS) photoluminescence(PL) defects