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AvatarWild:Fully controllable head avatars in the wild
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作者 Shaoxu Meng Tong Wu +4 位作者 Fang-Lue Zhang Shu-Yu Chen Yuewen Ma Wenbo Hu Lin Gao 《Visual Informatics》 EI 2024年第3期96-106,共11页
Recent advancements in the field have resulted in significant progress in achieving realistic head reconstruction and manipulation using neural radiance fields(NeRF).Despite these advances,capturing intricate facial d... Recent advancements in the field have resulted in significant progress in achieving realistic head reconstruction and manipulation using neural radiance fields(NeRF).Despite these advances,capturing intricate facial details remains a persistent challenge.Moreover,casually captured input,involving both head poses and camera movements,introduces additional difficulties to existing methods of head avatar reconstruction.To address the challenge posed by video data captured with camera motion,we propose a novel method,AvatarWild,for reconstructing head avatars from monocular videos taken by consumer devices.Notably,our approach decouples the camera pose and head pose,allowing reconstructed avatars to be visualized with different poses and expressions from novel viewpoints.To enhance the visual quality of the reconstructed facial avatar,we introduce a view-dependent detail enhancement module designed to augment local facial details without compromising viewpoint consistency.Our method demonstrates superior performance compared to existing approaches,as evidenced by reconstruction and animation results on both multi-view and single-view datasets.Remarkably,our approach stands out by exclusively relying on video data captured by portable devices,such as smartphones.This not only underscores the practicality of our method but also extends its applicability to real-world scenarios where accessibility and ease of data capture are crucial. 展开更多
关键词 Neural radiance fields Head avatar synthesis Face reconstruction Face reenactment Facial animation
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UAV-Assisted Dynamic Avatar Task Migration for Vehicular Metaverse Services: A Multi-Agent Deep Reinforcement Learning Approach 被引量:1
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作者 Jiawen Kang Junlong Chen +6 位作者 Minrui Xu Zehui Xiong Yutao Jiao Luchao Han Dusit Niyato Yongju Tong Shengli Xie 《IEEE/CAA Journal of Automatica Sinica》 SCIE EI CSCD 2024年第2期430-445,共16页
Avatars, as promising digital representations and service assistants of users in Metaverses, can enable drivers and passengers to immerse themselves in 3D virtual services and spaces of UAV-assisted vehicular Metavers... Avatars, as promising digital representations and service assistants of users in Metaverses, can enable drivers and passengers to immerse themselves in 3D virtual services and spaces of UAV-assisted vehicular Metaverses. However, avatar tasks include a multitude of human-to-avatar and avatar-to-avatar interactive applications, e.g., augmented reality navigation,which consumes intensive computing resources. It is inefficient and impractical for vehicles to process avatar tasks locally. Fortunately, migrating avatar tasks to the nearest roadside units(RSU)or unmanned aerial vehicles(UAV) for execution is a promising solution to decrease computation overhead and reduce task processing latency, while the high mobility of vehicles brings challenges for vehicles to independently perform avatar migration decisions depending on current and future vehicle status. To address these challenges, in this paper, we propose a novel avatar task migration system based on multi-agent deep reinforcement learning(MADRL) to execute immersive vehicular avatar tasks dynamically. Specifically, we first formulate the problem of avatar task migration from vehicles to RSUs/UAVs as a partially observable Markov decision process that can be solved by MADRL algorithms. We then design the multi-agent proximal policy optimization(MAPPO) approach as the MADRL algorithm for the avatar task migration problem. To overcome slow convergence resulting from the curse of dimensionality and non-stationary issues caused by shared parameters in MAPPO, we further propose a transformer-based MAPPO approach via sequential decision-making models for the efficient representation of relationships among agents. Finally, to motivate terrestrial or non-terrestrial edge servers(e.g., RSUs or UAVs) to share computation resources and ensure traceability of the sharing records, we apply smart contracts and blockchain technologies to achieve secure sharing management. Numerical results demonstrate that the proposed approach outperforms the MAPPO approach by around 2% and effectively reduces approximately 20% of the latency of avatar task execution in UAV-assisted vehicular Metaverses. 展开更多
关键词 AVATAR blockchain metaverses multi-agent deep reinforcement learning transformer UAVS
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MV-Honeypot:Security Threat Analysis by Deploying Avatar as a Honeypot in COTS Metaverse Platforms
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作者 Arpita Dinesh Sarang Mohsen Ali Alawami Ki-Woong Park 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第10期655-669,共15页
Nowadays,theuse of Avatars that are unique digital depictions has increased by users to access Metaverse—a virtual reality environment—through multiple devices and for various purposes.Therefore,the Avatar and Metav... Nowadays,theuse of Avatars that are unique digital depictions has increased by users to access Metaverse—a virtual reality environment—through multiple devices and for various purposes.Therefore,the Avatar and Metaverse are being developed with a new theory,application,and design,necessitating the association of more personal data and devices of targeted users every day.This Avatar and Metaverse technology explosion raises privacy and security concerns,leading to cyber attacks.MV-Honeypot,or Metaverse-Honeypot,as a commercial off-the-shelf solution that can counter these cyber attack-causing vulnerabilities,should be developed.To fill this gap,we study user’s engagements with Avatars in Metaverse,analyze possible security vulnerabilities,and create a model named Simplified Avatar Relationship Association with Non-linear Gradient(SARANG)that draws the full diagram of infrastructure components and data flow through accessing Metaverse in this paper.We also determine the most significant threat for each component’s cyberattacks that will affect user data and Avatars.As a result,the commercial off-the-shelf(COTS)of the MV-Honeypot must be established. 展开更多
关键词 AVATAR metaverse CYBERSECURITY cloud computing internet of things artificial intelligence security analysis
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Data,digital worlds,and the avatarization of health care
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作者 Jane Thomason 《Global Health Journal》 2024年第1期1-3,共3页
Significant technological trends are impacting health care,from consumerisation,datafication,circular economy,and platformization of services.Web 3.0,or the Internet of Value,enables direct peer-to-peer value exchange... Significant technological trends are impacting health care,from consumerisation,datafication,circular economy,and platformization of services.Web 3.0,or the Internet of Value,enables direct peer-to-peer value exchange,opening up new business models that will impact health care.Among the many technologies that will also be part of the healthcare transformation is artificial intelligence,which shocked the world with the debut of ChatGPT in 2022.This opinion piece will explore how AI underpins the health transformation and,far from being an enemy of health,is the critical friend health care has been waiting for. 展开更多
关键词 Avatarization Artificial intelligence Big Tech ChatGPT Consumerization 5G Healthcare
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Based on Socket IO + Unity Building the Metaverse of Dream of the Red Chamber
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作者 Ziqian Rong 《Intelligent Information Management》 2023年第6期426-441,共16页
The Metaverse of Dream of the Red Chamber has a natural fit with Unity + Socket.IO, both in virtual space and functional design. Using Unity, you can generate and build the foundation of the Metaverse of Dream of the ... The Metaverse of Dream of the Red Chamber has a natural fit with Unity + Socket.IO, both in virtual space and functional design. Using Unity, you can generate and build the foundation of the Metaverse of Dream of the Red Chamber: virtual reality, including real-time dynamic internal generation and external loading of virtual characters, scenes, and various other elements, and can achieve various controls over these elements without delay. The Metaverse space built by Unity has full immersion and diversity;Socket.IO realizes Internet connection, Unity C# script creates Socket.IO client, Unity + Socket.IO connection realizes interpersonal communication, thus jointly realizing digital identity management in the Metaverse of Dream of the Red Chamber. Including virtual identity registration, Unity to achieve login authentication, digital avatar unique distribution;jointly create a network social space including games, business transactions, friends and entertainment, and provide corresponding safety information management for it, which is enough to reflect the special code of conduct and civilization ecology in the Metaverse. In short, Unity + Socket.IO can build a complete system of the Metaverse of Dream of the Red Chamber from the digital technology level. 展开更多
关键词 Metaverse Features Virtual Reality Digital Identity Digital Avatar Social Network
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卡梅隆及其作品与中国的三次不解之缘
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作者 赫道 《视听前线》 2023年第1期117-120,共4页
去年年末,备受瞩目与期待的《阿凡达:水之道》(Avatar:The Way of Water)终于与观众们见面了。作为导演詹姆斯·卡梅隆(James Cameron)十年磨一剑的最新之作,这部《阿凡达:水之道》的诞生与14年前的《阿凡达》(Avatar)一样可谓漫长... 去年年末,备受瞩目与期待的《阿凡达:水之道》(Avatar:The Way of Water)终于与观众们见面了。作为导演詹姆斯·卡梅隆(James Cameron)十年磨一剑的最新之作,这部《阿凡达:水之道》的诞生与14年前的《阿凡达》(Avatar)一样可谓漫长而曲折。如今,68岁的卡梅隆导演对电影的热情始终如一,而凝聚他的心血的《泰坦尼克号》《阿凡达》,也让不同年龄层的中国观众,认识了这位导演与他的精心制作。 展开更多
关键词 《阿凡达》 卡梅隆 阿凡达 《泰坦尼克号》 年龄层 AVATAR
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行为投入影响深度学习的实证探究——以虚拟现实(VR)环境下的视频学习为例 被引量:60
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作者 刘哲雨 王志军 《远程教育杂志》 CSSCI 2017年第1期72-81,共10页
行为投入是最重要的投入因素之一,在虚拟现实(VR)环境中,学习者的深度学习效果是否受到行为投入的影响、如何检视其影响机制与影响程度都值得深入探究,也备受学界关注。深度学习效果评价模式的构建是以新知理解为基础,并细化出内部关联... 行为投入是最重要的投入因素之一,在虚拟现实(VR)环境中,学习者的深度学习效果是否受到行为投入的影响、如何检视其影响机制与影响程度都值得深入探究,也备受学界关注。深度学习效果评价模式的构建是以新知理解为基础,并细化出内部关联迁移和外部拓展迁移。将虚拟现实学习环境Avatar作为研究背景,采用眼动行为研究与认知行为研究相结合的研究范式,可以用眼动行为实验解释深度学习机制,并用认知行为实验测量深度学习效果,实验结果呈现出行为投入对深度学习效果中的内部关联迁移与外部拓展迁移,产生了显著促进作用。这一研究成果,为设计符合深度学习需求的学习环境与学习媒体提供了依据。 展开更多
关键词 深度学习 行为投入 实证探究 虚拟现实 VR AVATAR 视频学习
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Avatar虚拟环境支持CALLA模式的教学研究 被引量:4
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作者 刘哲雨 王志军 倪晓萌 《现代教育技术》 CSSCI 2016年第7期44-50,共7页
基于Avatar的学习系统设计为英语学习者提供了专属的、富有沉浸感的网络三维虚拟现实(Virtual Reality,VR)环境,延伸了课堂所无法实现的交互体验。认知学术语言学习方法(The Cognitive Academic Language Learning Approach,CALLA)成功... 基于Avatar的学习系统设计为英语学习者提供了专属的、富有沉浸感的网络三维虚拟现实(Virtual Reality,VR)环境,延伸了课堂所无法实现的交互体验。认知学术语言学习方法(The Cognitive Academic Language Learning Approach,CALLA)成功地促进了学习者语言学习策略的训练,在英语学习中得到广泛应用。文章以Avatar支持CALLA模式的机制设计为研究思路,以细化师生的活动任务和评价指标为实施指南,开展了Avatar虚拟环境支持CALLA模式的英语教学活动,并通过实证研究验证了该模式在中学英语教学中的有效性。 展开更多
关键词 AVATAR CALLA模式 英语教学 实证研究 VR
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基于符号消费的Avatar盈利模式研究 被引量:1
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作者 黄卫东 王传磊 +1 位作者 李轶 朱茜 《商业时代》 北大核心 2008年第30期31-32,共2页
本文在分析网络符号消费特征的基础上,对Avatar模式的符号消费商务过程进行解析,研究Avatar的商务盈利模式,并总结出该盈利模式的主要经济特征。
关键词 AVATAR 盈利模式 消费行为 符号消费
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Avatar中的三维动画技术应用 被引量:3
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作者 管悦 《电影文学》 北大核心 2011年第18期69-70,共2页
电影巨片Avatar被誉为电影史上具有里程碑式的3D精品,本文对Avatar所运用的三维动画技术进行介绍;本文从虚拟摄像机技术、表情抓取技术、动作捕捉技术和3D立体摄影机这四个方面,深入探讨影片Avatar所取得的主要技术突破。
关键词 三维动画 AVATAR 3D电影 电影科技
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基于Avatar用户的消费行为分析
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作者 王传磊 黄卫东 袁兢 《科技创新导报》 2008年第2期164-165,共2页
互联网盈利模式的选择是困扰国内互联网企业的重要难题,而Avatar是被国外诸多市场证明为极其成功的互联网运营及盈利模式。通过实证调研的方式分析Avatar产品的用户的消费行为特征,对互联网企业的产品设计和运营策略策划无疑会有重要启发。
关键词 AVATAR 腾讯Avatar 消费行为
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《阿凡达》:向星际殖民说“不”
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作者 倪云 《电影文学》 北大核心 2010年第15期69-70,共2页
《阿凡达》(Avatar)是美国金奖导演詹姆斯·卡梅隆继《泰坦尼克号》之后的又一巨作。Avatar在英文中意为天神的化身,影片中指利用地球人类基因与土著纳威人的基因培育出的混血儿,其体貌特征更接近土著,身材超高,但拥有地球人... 《阿凡达》(Avatar)是美国金奖导演詹姆斯·卡梅隆继《泰坦尼克号》之后的又一巨作。Avatar在英文中意为天神的化身,影片中指利用地球人类基因与土著纳威人的基因培育出的混血儿,其体貌特征更接近土著,身材超高,但拥有地球人的记忆,使用地球人的语言(英语)。 展开更多
关键词 “不” 《泰坦尼克号》 殖民 AVATAR 人类基因 体貌特征 詹姆斯 地球
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The Influence of Memetic Primers in Online Comments in Video Game Blogs
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作者 Ibrahim Yucel 《Advances in Internet of Things》 2012年第3期63-73,共11页
Through investigating a particular blog, several factors were found which have significant influence on reader actions. This study uses the term “memetic primers” for those styles that most often cause readers to ta... Through investigating a particular blog, several factors were found which have significant influence on reader actions. This study uses the term “memetic primers” for those styles that most often cause readers to take notice of a particular comment, remember information included in it, and take action. The memetic primers were derived in a discourse analysis. The study discovered the memetic primers using logic-of-inquire approach to the online comments. While evidence indicated that the usefulness of some primers was low, it emerged those negatively written comments where the most common impact on a comment’s volume. 展开更多
关键词 Computer-Mediated Communication Social Networking Site Design and Use VIRTUAL Worlds/avatars/Proxies Community Analysis and Support VIRTUAL or Physical Entertainment/Games
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Nicolet AVATAR 360FT—IR分辨率设置对谱图结果的影响
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作者 何猛雄 《国外分析仪器技术与应用》 2002年第4期14-16,共3页
本文对Nicolet AVATAR 360FT-IR测试操作中分辨率设置和使用进行了详细的探讨,阐述了分辨率的合理设置对扫描谱图结果的影响。实验发现,分辨率大小的设置,对常规有机物的红外光谱图影响不大,但对如过氧杂多化合物,合理的分辨率对... 本文对Nicolet AVATAR 360FT-IR测试操作中分辨率设置和使用进行了详细的探讨,阐述了分辨率的合理设置对扫描谱图结果的影响。实验发现,分辨率大小的设置,对常规有机物的红外光谱图影响不大,但对如过氧杂多化合物,合理的分辨率对扫描谱图结果影响较大。 展开更多
关键词 谱图 红外光谱 分辨率 过氧杂多化合物 AVATAR360FT-IR
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数字技术的生命力:《阿凡达》热映的多元解析
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作者 游岸 《新闻知识》 北大核心 2012年第11期105-106,111,共3页
3D电影《阿凡达》在2010年1月份于中国上映,它是由二十世纪福克斯出品,詹姆斯卡梅隆导演的一部3D巨作,是迄今为止世界电影史上预算金额最高的电影,制作团队将数字技术完美地运用在电影中,生动地描绘出了纳美星球的人物和场景。《... 3D电影《阿凡达》在2010年1月份于中国上映,它是由二十世纪福克斯出品,詹姆斯卡梅隆导演的一部3D巨作,是迄今为止世界电影史上预算金额最高的电影,制作团队将数字技术完美地运用在电影中,生动地描绘出了纳美星球的人物和场景。《阿凡达》是英文Avatar的中文音译,词根源自梵文,指的是降临人间的神之化身。而这一名字与电影本身的故事情节和氛围非常之吻合。 展开更多
关键词 数字技术 世界电影史 解析 生命 AVATAR 2010年 二十世纪 故事情节
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Teen reactions to a self-representational avatar:A qualitative exploration
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作者 Emily Baysden Ninna Mendoza +2 位作者 Chishinga Callender Zhigang Deng Debbe Thompson 《Journal of Sport and Health Science》 SCIE 2022年第2期157-163,I0002,共8页
Purpose:This research presents findings from a qualitative exploration of the reactions of adolescents(12-14 years old)to navigating an exergame with an avatar created from multiple scans of the player(referred to as ... Purpose:This research presents findings from a qualitative exploration of the reactions of adolescents(12-14 years old)to navigating an exergame with an avatar created from multiple scans of the player(referred to as a self-representational avatar).Methods:Post-gameplay interviews were conducted with adolescents following participation in a 20-min laboratory session(21.2±0.8 min,mean±SD)where the self-representational avatar was navigated through an exergame.Verbatim transcripts(n=40)were coded and analyzed by 2 independent coders using hybrid thematic analysis for this secondary data analysis.Codes were reviewed to identify themes representing adolescents’reactions.Results:Four themes emerged.Adolescents connected with their avatars and felt protective toward them,which influenced their actions in the exergame and contributed to their overall game enjoyment.Conclusion:Creating exergames navigated by a self-representational avatar was an enjoyable experience and influenced gameplay.Future research should explore the effect of this approach on gameplay frequency and intensity over time. 展开更多
关键词 AVATAR Exergame Physical activity Relatedness Self-determination theory
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Mouse avatar models derived from patients with colorectal cancer liver metastases provide a well-characterized platform for preclinical studies
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作者 Wang Jingyuan Liu Wei +2 位作者 Gao Jing Xing Baocai Shen Lin 《Cancer Biology & Medicine》 SCIE CAS CSCD 2018年第S01期11-11,共1页
Objective:The liver is the most common metastatic site in advanced colorectal cancer.Most patients with colorectal cancer liver metastasis(CRLM)cannot benefit from currently available treatment.Patient-derived xenogra... Objective:The liver is the most common metastatic site in advanced colorectal cancer.Most patients with colorectal cancer liver metastasis(CRLM)cannot benefit from currently available treatment.Patient-derived xenograft(PDX)models with defined molecular signatures are attractive preclinical models and essential for preclinical studies. 展开更多
关键词 MOUSE AVATAR MODELS
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Use of zebrafish embryos as avatar of patients with pancreatic cancer:A new xenotransplantation model towards personalized medicine
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作者 Gregorio Di Franco Alice Usai +11 位作者 Niccola Funel Matteo Palmeri Ida Elena Rosamaria Montesanti Matteo Bianchini Desirée Gianardi NiccolòFurbetta Simone Guadagni Enrico Vasile Alfredo Falcone Luca Emanuele Pollina Vittoria Raffa Luca Morelli 《World Journal of Gastroenterology》 SCIE CAS 2020年第21期2792-2809,共18页
BACKGROUND The response to chemotherapy treatment of patients with pancreatic ductal adenocarcinoma(PDAC)is difficult to predict and the identification of patients who most likely will benefit from aggressive chemothe... BACKGROUND The response to chemotherapy treatment of patients with pancreatic ductal adenocarcinoma(PDAC)is difficult to predict and the identification of patients who most likely will benefit from aggressive chemotherapy approaches is crucial.The concept of personalized medicine has emerged in the last years with the objective to tailor the medical treatment to the individual characteristics of each patient,and particularly to the tumor biology of each patient.The need for invivo xenotransplantation models for cancer patients has increased exponentially,and for this reason zebrafish avatars have gained popularity.Preliminary studies were conducted also with PDAC tissue.AIM To develop a simple,not expensive,diffusible zebrafish embryo model as avatar for patients affected by PDAC.METHODS Tumor tissue was taken from the surgical specimen by the histopathologist.After its fragmentation into small pieces,they are stained with CM-Dil.Small pieces of stained tissue were transplanted into the yolk of wt AB zebrafish embryos with a glass capillary needle.Embryos were incubated at 35°C in E3 medium supplemented with 1%Pen/Strep in the presence or absence of drugs for the following days in respect of the treatment plan(Gemcitabine;Gemcitabine and Oxaliplatin;Gemcitabine and nab-Paclitaxel;5-Fluorouracil and Folinic acid and Oxaliplatin and Irinotecan).The response of zebrafish xenografts to the chemotherapy options has been analyzed by monitoring the fluorescent stained area at 2 h post injection(hpi),1 d and 2 d post injection(dpi).In each time point,the mean size of the stained area was measured by ImageJ and it was normalized with respect to the 1 dpi time point mean relative tumor area(RTA).We evaluated the effect of the chemotherapy exposition comparing the mean RTA of each treated subgroup and the control group and evaluating the percentage reduction of the mean RTA by comparing each treated subgroup with the control group.RESULTS Between July 2018 and October 2019,a total of 15 patients with pancreatic cancer were prospectively enrolled.In all cases,it was possible to take a fragment of the tumor from the surgical specimen for the xenotransplantation in the zebrafish embryos.The histological examination confirmed the presence of a PDAC in all cases.In absence of chemotherapy(control group),over time the Dil-stained area showed a statistically significant increase in all cases.A statistically significant reduction of the mean RTA in the treated subgroups for at least one chemotherapy scheme was reported in 6/15(40%)cases.The analysis of the percentage reduction of the RTA in treated subgroups in comparison to the control group revealed the presence of a linear relationship in each subgroup between the percentage reduction of the RTA and the number of cases reporting each percentage threshold considered for the analysis.CONCLUSION Our model seems to be effective for the xenotransplantation of PDAC tissue and evaluation of the effect of each chemotherapy scheme on the xenotransplanted tumor tissue. 展开更多
关键词 Pancreatic ductal adenocarcinoma Zebrafish embryos Personalized medicine XENOTRANSPLANTATION Chemotherapy efficacy Avatar of oncological patients
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参数设计软件AVATAR与造纸机通用零部件图库的建立
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作者 朱大可 周仁睦 《轻工机械》 CAS 1991年第1期28-32,共5页
一、总论 AVATAR是加在CIM CAD上的一个软件模块。它与CIM CAD(3.0及以上版)一起运行,提供参数化绘图。在计算机辅助设计或绘图领域,经常会碰到形状大致相同唯尺寸有所差别的几何图形。对于这些几何图形,用AVATAR只需绘制一张图就够了... 一、总论 AVATAR是加在CIM CAD上的一个软件模块。它与CIM CAD(3.0及以上版)一起运行,提供参数化绘图。在计算机辅助设计或绘图领域,经常会碰到形状大致相同唯尺寸有所差别的几何图形。对于这些几何图形,用AVATAR只需绘制一张图就够了。尺寸用参数标注,对于其中某一形状的几何图形,只要赋予各参数具体的数值,AVATAR就能绘出实际尺寸的图形。 展开更多
关键词 造纸机 通用零件 图库 AVATAR软件
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Intelligent Interfaces: Pedagogical Agents and Virtual Humans
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作者 Ana Lilia Laureano-Cruces Lourdes Sánchez-Guerrero +1 位作者 Javier Ramírez-Rodríguez Emiliano Ramírez-Laureano 《International Journal of Intelligence Science》 2022年第3期57-78,共22页
Little by little, we are entering the new era, intelligent interfaces are absorbing us more and more every day, and artificial intelligence makes its presence in a stealthy way. Virtual humans that represent an evolut... Little by little, we are entering the new era, intelligent interfaces are absorbing us more and more every day, and artificial intelligence makes its presence in a stealthy way. Virtual humans that represent an evolution of autonomous virtual agents;they are computer programs and in the future capable of carrying out different activities in certain environments. They will give the illusion of being human;they will have a body, and they will be immersed in an environment. They will have a set of senses that will allow them: 1) Sensations and therefore associated expressions;2) Communication;3) Learning;4) Remembering events, among others. By integrating the above, they will have a personality and autonomy, so they will be able to plan with respect to objectives;allowing them to decide and take actions with their body, in other words, they will count on awareness. The applications will be focused on environments that they will inhabit, or as interfaces that will interact with other systems. The application domains will be multiple;one of them being education. This article shows the design of OANNA like an avatar with the role of pedagogical agent. It was modeled as an affective-cognitive structure related to the teaching-learning process linked to a pedagogical agent that represents the interface of an artilect. OANNA, has the necessary animations for intervention within the teaching-learning process. 展开更多
关键词 Intelligent Interfaces Expert Systems Applied to Education Autonomous Virtual Agents Pedagogical Agents AVATAR Virtual Humans Operational Strategies Cognitive Strategies Affective-Cognitive Structure
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