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2020 IEEE Integrated STEM Education Conference (ISEC)最新文献

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Behavioral Simulation Educational Framework for 2-Terminal MTJ-based Analog to Digital Converter 基于mtj的2端模数转换器行为模拟教学框架
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9397831
Gustavo Camero, Soheil Salehi, R. Demara
The emergence of advanced non-uniform Compressive Sensing (CS) signal processing techniques and spin-based devices has led to the development of novel Analog to Digital Converter (ADC) architectures. Herein, a novel interactive simulation framework is developed to provide widespread access to the ADC architecture designed using commercially-available 2terminal Magnetic Tunneling Junction (MTJ) devices. The proposed ADC simulation framework utilizes CS techniques to provide insights for educational and technical purposes. The proposed framework provides simulation results spanning from the energy consumption required by each sample and MTJ device to the switching behavior of each MTJ device. Additionally, the results demonstrate the type of signal used along with the bias voltage required to switch each MTJ device. However, currently, 2-terminal MTJ devices and advanced signal processing techniques are not part of the Electrical and Computer Engineering undergraduate curriculum. To mitigate this challenge, the proposed framework has an educational resource site companion to distribute the interactive tool and further provide insights into the modeled Spin-based ADC by showcasing the research it was based on. Finally, the educational resources site also includes video tutorials to further engage the students and teach undergraduates the fundamental behavior of MTJ devices and utilization of the interactive simulation framework.
先进的非均匀压缩感知(CS)信号处理技术和基于自旋的器件的出现导致了新型模数转换器(ADC)架构的发展。本文开发了一种新的交互式仿真框架,以提供对使用商用2端磁隧道结(MTJ)器件设计的ADC架构的广泛访问。提议的ADC模拟框架利用CS技术为教育和技术目的提供见解。该框架提供了从每个样品和MTJ器件所需的能量消耗到每个MTJ器件的开关行为的仿真结果。此外,结果还演示了使用的信号类型以及切换每个MTJ器件所需的偏置电压。然而,目前,2端MTJ器件和先进的信号处理技术并不是电气与计算机工程本科课程的一部分。为了缓解这一挑战,提议的框架有一个教育资源网站,用于分发交互式工具,并通过展示其所基于的研究,进一步提供对基于自旋的建模ADC的见解。最后,教育资源网站还包括视频教程,以进一步吸引学生和教授本科生MTJ设备的基本行为和交互式仿真框架的使用。
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引用次数: 0
Study of sample efficiency improvements for reinforcement learning algorithms 改进强化学习算法的样本效率研究
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9397834
Tianyue Cao
Machine learning is the study of how programmed algorithms can learn useful knowledge from data automatically. As a sub-field of machine learning, reinforcement learning (RL) focuses on problems that require sequential decision making. In particular, it is about interacting with the environment and taking action according to the environment information sequentially to maximizing some rewards. Reinforcement learning attracts many interests due to its recent successes in robotics as well as playing video games, GO, and poker. However, the fundamental challenges in reinforcement learning still limit its applications to real-world, cost and risk sensitive applications. One major challenge is relatively low sample efficiency in most systems. Sample efficiency is a term used to describe how well the samples are used to train the model. Because of low sample efficiency, it requires a huge number of samples to reach a certain level of performance. In most algorithms of reinforcement learning, methods such as experience replay are used to increase the sample efficiency. In the experience replay, a certain number of samples are saved in a buffer and new data will replace the oldest data in the set. When training, data will be randomly selected from the buffer. However, this will generate the problem of distribution mismatch, as the data chosen this way may not match the current model. In my research, methods are designed so that the samples collected from the past can reflect the current model. That will allow the model to use the data more effectively and thus increase its training efficiency.
机器学习是研究编程算法如何自动从数据中学习有用的知识。作为机器学习的一个子领域,强化学习(RL)专注于需要顺序决策的问题。特别是,它是关于与环境互动并根据环境信息采取行动以最大化某些奖励。由于最近在机器人技术以及玩电子游戏、围棋和扑克方面的成功,强化学习吸引了许多人的兴趣。然而,强化学习的基本挑战仍然限制了它在现实世界中的应用,成本和风险敏感的应用。在大多数系统中,一个主要的挑战是相对较低的采样效率。样本效率是一个术语,用来描述样本用于训练模型的效果。由于样本效率低,需要大量的样本才能达到一定的性能水平。在大多数强化学习算法中,使用经验回放等方法来提高样本效率。在经验回放中,一定数量的样本被保存在缓冲区中,新数据将取代集合中最旧的数据。训练时,数据将从缓冲区中随机抽取。然而,这将产生分布不匹配的问题,因为以这种方式选择的数据可能与当前模型不匹配。在我的研究中,方法的设计使得从过去收集的样本可以反映当前的模型。这将允许模型更有效地使用数据,从而提高其训练效率。
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引用次数: 0
SALP: A Scalable Autograder System for Learning Programming - A Work in Progress SALP:一个可扩展的自动评分系统,用于学习编程-一个正在进行的工作
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9280574
Diego Calderón, Erick Petersen, Oscar Rodas
Programming courses can be hard for students, but also for teachers, because of the huge amount of time that takes to manually grade each student’s assignment and the different kind of valid solutions. Moreover, there are other problems related to manually grade assignments such as completely objective and homogeneous grading. In consequence, both students and teachers don’t get feedback as fast as they should in order to take action and reinforce the topics with lower performance on each assignment. Finally, the increasing popularity of MOOCs makes manually grading no longer viable. To this aim, a scalable autograder system is proposed in order to provide students with faster feedback and help teachers with the evaluation of assignments. Our proposal can be used for learning different programming languages like Java, Python, C, C# and Ruby.
编程课程对学生来说很难,对老师来说也很难,因为手工给每个学生的作业打分需要花费大量的时间,而且需要不同类型的有效解决方案。此外,还有其他与人工评分作业相关的问题,例如完全客观和均匀的评分。因此,学生和老师都不能尽快得到反馈,以便采取行动,并在每次作业中加强表现较差的主题。最后,mooc的日益普及使得手动评分不再可行。为此,提出了一个可扩展的自动评分系统,以便为学生提供更快的反馈,并帮助教师评估作业。我们的建议可以用于学习不同的编程语言,如Java, Python, C, c#和Ruby。
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引用次数: 1
Active and Collaborative Learning Based Dynamic Instructional Approach in Teaching Introductory Computer Science Course with Python Programming 基于主动协作学习的Python编程计算机科学入门课程动态教学方法
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9280598
Md Mahmudur Rahman, Monir H. Sharker, Roshan Paudel
In this era of smart devices, new technologies, gadgets, apps, and numerous systems and services available over online, teaching an introductory programming course by traditional lecture method faces challenges to draw student’s attention; especially in their freshman year. In this work, we discuss our experience in teaching an introductory CS course by infusing both interactive and collaborative learning in pedagogy so that students can learn using interactive platforms, tools, technologies, systems, and services as available to them and collaboration within and among groups. For interactive learning, students used an interactive programming environment (e.g. repl. it classroom) as well as online eBooks. We designed several in-class exercises, assignments, small lab-based projects with example codes and expected outputs, and unit tests by using built-in unit tests library. We also, in the middle of semester, introduced collaborative learning through teamwork on well-defined projects during the learning time and submitted at the end. The collaborations include use of basic task management tools and multi-player tool of repl.it that the students can critic, supplement, improve peer works and learn. To evaluate the impact of this infusion, a pre- and post-survey were conducted on student cohort in two different semesters. The initial evaluation of the survey results and performances (final project and final grades) show evidence to conclude that the proposed pedagogical approach increased student motivation and engagement and facilitated learning to entry-level computer science students.
在这个智能设备、新技术、小工具、应用程序以及众多在线系统和服务的时代,通过传统的讲座方法教授编程入门课程面临着吸引学生注意力的挑战;尤其是在大一的时候。在这项工作中,我们通过在教学法中注入互动和协作学习来讨论我们在CS入门课程的教学经验,以便学生可以使用他们可用的互动平台、工具、技术、系统和服务以及小组内部和小组之间的协作来学习。在互动学习方面,学生使用了交互式编程环境(例如repl。(课堂)以及在线电子书。我们设计了几个课堂练习、作业、带有示例代码和预期输出的小型实验室项目,以及使用内置单元测试库进行的单元测试。我们也在学期中期引入了团队合作的学习方式,在学习期间对明确的项目进行团队合作,并在期末提交。协作包括使用基本任务管理工具和repl的多玩家工具。学生可以批评、补充、改进同伴的作品并从中学习。为了评估这种输液的影响,在两个不同的学期对学生队列进行了前后调查。对调查结果和表现(期末项目和期末成绩)的初步评估显示,有证据表明,拟议的教学方法提高了学生的积极性和参与度,并促进了入门级计算机科学学生的学习。
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引用次数: 2
Virtual Collaboration Training for Freshman Undergraduate STEM Students STEM本科新生虚拟协作训练
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9280597
Eric Nersesian, Jessica Ross-Nersesian, Adam Spryszynski, Michael J. Lee
Higher educational institutions formalize socialization for their incoming undergraduate student populations with traditional forms of physical classroom-based learning community (LC) skill-building environments; however, recent studies have shown that virtual LC environments can offer improved results over physical LC environments. This study examines whether incoming undergraduate science, technology, engineering, and math (STEM) students gain the same benefits to their academic performance regardless of whether they receive LC training in physical or virtual reality (VR) treatment. We found that either treatment of collaboration training improve the participants’ academic performance in comparison to the control treatment. In addition, we found that the VR participants gave more academic help in social settings to their peers throughout the semester than their control group counterparts. Upon interviewing the two treatment group participants, we found that virtualization of collaboration may impact perceptions on leadership roles, group functions, and thinking about the future. This research shows that virtualizing LCs has the potential to expand and supplement existing learning structures, and create new ones where they were not previously available, and aims to offer a better understanding of the strengths and limitations of introducing VR technologies in higher education.
高等教育机构通过传统形式的以教室为基础的学习社区(LC)技能培养环境,将即将入学的本科学生群体的社会化正式化;然而,最近的研究表明,虚拟LC环境可以提供比物理LC环境更好的结果。本研究考察了即将入学的本科科学、技术、工程和数学(STEM)学生,无论他们接受物理或虚拟现实(VR)治疗的LC培训,他们的学业成绩是否获得了同样的好处。我们发现,与对照组相比,合作训练的任何一种处理都提高了参与者的学习成绩。此外,我们发现虚拟现实参与者在整个学期的社交环境中给同龄人的学术帮助比对照组的同龄人多。在采访了两个实验组的参与者后,我们发现协作虚拟化可能会影响对领导角色、团队功能和对未来的思考的看法。这项研究表明,虚拟学习中心有可能扩展和补充现有的学习结构,并在以前没有的地方创建新的学习结构,旨在更好地理解在高等教育中引入虚拟现实技术的优势和局限性。
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引用次数: 2
Pre-college Computer Science Initiative for Augmented and Virtual Reality Development 大学预科计算机科学增强和虚拟现实发展计划
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9397828
Eric Nersesian, Adam Spryszynski, Tracy Espiritu, Michael J. Lee
New curricula initiatives are growing to meet nearfuture, industrial demand for computer science (CS) graduates with Augmented and Virtual Reality (AR/VR) development knowledge. Universities are often at the forefront in developing these curricula to help prepare their students for industry jobs. High schools wanting to offer college aligned CS courses for their students typically work with local universities to adapt courses for their students’ needs. This paper presents such an effort along with results from a student survey showing the successful implementation of college-level courses through training of high school teachers. The curricula from this study are available for public use at artncoding.com and may be adapted as needed by educational programs to meet the emerging employment needs of their students in the AR/VR field.
新的课程计划正在增加,以满足近期对具有增强和虚拟现实(AR/VR)开发知识的计算机科学(CS)毕业生的工业需求。大学通常在开发这些课程方面走在前列,以帮助学生为行业工作做好准备。想要为学生提供大学计算机科学课程的高中通常会与当地大学合作,根据学生的需求调整课程。本文提出了这种努力,并从一项学生调查的结果显示,通过培训高中教师成功实施大学水平的课程。本研究的课程可以在artncoding.com上公开使用,并且可以根据教育项目的需要进行调整,以满足学生在AR/VR领域出现的就业需求。
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引用次数: 0
Outlook of Commonly used Biometrics and Assessment of Best Trait for High Level Security 常用生物识别技术展望及高水平安全最佳性状评估
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9280740
Shahad A. Sultan, M. F. Ghanim
A biometric based authentication system is a security system that provide an automatic user authentication to access some areas, which require a certain level of security. Such a system is built based on some biometric traits possessed by the user. Although there are many authentic systems can be built based on different human biometrics such as face, fingerprints, iris, hand and finger geometry and voice etc. but all of these biometrics have their drawbacks and all of them can easily be forged. Human retina is a biometric trait that provides secure and reliable source of person recognition as it is unique, universal, lies at the rare end of the eye and hence it is unforgeable. Therefore, among all other biometrics human retina can be used to build a high-level security system. This paper makes an outlook on the commonly used biometric traits and states a comparison among them to prove that human retina is the best one for high level security areas.
基于生物特征的身份验证系统是一种安全系统,它为用户访问某些需要一定安全级别的区域提供自动身份验证。这种系统是基于用户所具有的一些生物特征而建立的。虽然有许多真实的系统可以基于不同的人类生物特征,如面部,指纹,虹膜,手和手指的几何形状和声音等,但所有这些生物特征都有其缺点,所有这些都很容易被伪造。人类视网膜是一种生物特征,它提供了安全可靠的人识别来源,因为它是独特的,普遍的,位于眼睛罕见的末端,因此它是不可伪造的。因此,在所有其他生物特征中,人类视网膜可以用来构建一个高层次的安全系统。本文对常用的生物特征特征进行了展望,并对几种生物特征特征进行了比较,证明在高级别安全区域,人的视网膜是最好的生物特征特征。
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引用次数: 0
Influencing Factors to Choose STEM Areas: The Case of Strongly STEM-Oriented High School Students 影响STEM领域选择的因素:以STEM取向强烈的高中生为例
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9397839
A. Dominguez, Santa Tejeda, B. Ruiz
The need to understand better the actors and factors that influence students’ perceptions of pursuing an academic and professional future in STEM areas has been studied for over 30 years. In this work, we focus on students who are strongly oriented to science, technology, engineering, and mathematics to investigate what motivates them and who has been cultivating their inclinations to these careers. High school students who attended an international science contest on mathematics, physics, chemistry, biology, and computing (over 600 attendees) were invited to participate in a focus group. Thirteen students attended the call. The session lasted over 90 minutes and was video recorded. All the session was transcribed, and a group of researchers analyzed the data based on an adaptation of the expectancy-value theory. The results indicated that the students did not feel they had the expected support from their schools; instead, their primary support came from their family (particularly their parents). It was interesting to find that among this group of students, their conceptualization of STEM and interest in how science and technology could improve the world (or their world) proved to be a significant factor in keeping them motivated to pursue their goals.
30多年来,人们一直在研究有必要更好地了解影响学生在STEM领域追求学术和职业未来的行为者和因素。在这项工作中,我们重点关注那些强烈倾向于科学、技术、工程和数学的学生,调查是什么激励了他们,是谁培养了他们对这些职业的倾向。参加国际数学、物理、化学、生物和计算机科学竞赛的高中生(超过600人)被邀请参加焦点小组。13名学生参加了电话会议。整个过程持续了90多分钟,并被录了下来。所有的会话都被记录下来,一组研究人员根据期望值理论的改编分析了数据。调查结果显示,学生并未感受到学校给予他们的支持;相反,他们的主要支持来自家庭(尤其是父母)。有趣的是,在这群学生中,他们对STEM的概念和对科学技术如何改善世界(或他们的世界)的兴趣被证明是保持他们追求目标的动力的重要因素。
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引用次数: 0
Development of low-cost IoT devices to encourage STEM skills in Guatemalan environments 开发低成本物联网设备,鼓励危地马拉环境中的STEM技能
Pub Date : 2020-08-01 DOI: 10.1109/ISEC49744.2020.9397811
Yeisson Chicas, Angel Isidro, Oscar Rodas
Industry 4.0 was first introduced in Germany in 2006. As leading countries of this initiative, we can mention various European and Asian countries and the United States. The main axis that Industry 4.0 has are Internet of Things (IoT), Virtual Reality, 3D Printing, Cloud Computing, among others. Guatemala is becoming a technology hub country. Various web development or BPO companies have migrated their technology departments to our country because people have well developed STEM skills. Their main activities involved web development, infrastructure and help desk collaborations. However, hardware development is not an economic pillar to develop our country yet. In Universidad Galileo we created academic and outreach programs based on IoT to change the mindset of young students and professionals to become technology producers and not only technology consumers or users. Our two-year research, the workshops developed, and the feedback obtained by participants in our technology events ensures that our STEM programs are building the correct skills in people to help develop Industry 4.0 in Guatemala.
工业4.0于2006年首次在德国推出。作为“一带一路”倡议的牵头国,我们可以提到欧洲、亚洲各国和美国。工业4.0的主轴是物联网(IoT)、虚拟现实、3D打印、云计算等。危地马拉正在成为一个技术中心国家。各种web开发或BPO公司已经将他们的技术部门迁移到我国,因为人们拥有良好的STEM技能。他们的主要活动涉及网络开发、基础设施和服务台协作。然而,硬件开发还不是我国经济发展的支柱。在伽利略大学,我们创建了基于物联网的学术和推广项目,以改变年轻学生和专业人士的心态,使他们成为技术生产者,而不仅仅是技术消费者或用户。我们为期两年的研究、开发的研讨会以及技术活动参与者获得的反馈,确保了我们的STEM项目正在培养人们的正确技能,以帮助危地马拉发展工业4.0。
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引用次数: 0
Aerogel Composites: Historical and Novel Synthesis Methods and Applications 气凝胶复合材料:历史和新的合成方法和应用
Pub Date : 2020-08-01 DOI: 10.1109/isec49744.2020.9397823
Michael Z. Q. Chen, A. Dasanayake, Rohan Deb, Varun Deb, E. Zhao
Our poster seeks to provide a broad overview of the many wondrous properties of aerogel composites (which include hydrophobicity, low density, blue light scattering, and superb noise, heat, and electrical insulation), detail chronologically various methods of the material’s synthesis (such as sol-gel polymerization and seed growth method), and offer insight into its vast array of present and future applications (in fields such as fashion, aerospace, and construction). Research on our project began in May 2019 and is expected to be completed in March 2020. During the span of our research, we analyzed a wide selection of scientific papers detailing the fabrication processes, chemical and physical properties, and history of aerogel. To supplement our research, we performed live experiments (with the assistance of our AP Chemistry teacher) on a small monolith sample we purchased online. In one test, we placed the aerogel on a metal ring fixed to a stand above a Bunsen burner, lighted the burner, and then placed a match on top of the aerogel (the match remained unlit, demonstrating the material’s extraordinary heat-insulating capability). Though our poster seeks, in part, to exhibit our experience in the classroom in research and experimental design in the field of materials science, it most importantly seeks to instill within the viewer a curiosity and awe for the highly promising future of this novel material.
我们的海报旨在提供气凝胶复合材料的许多奇妙特性的广泛概述(包括疏水性,低密度,蓝光散射,以及极好的噪声,热和电绝缘性),按时间顺序详细介绍了材料的各种合成方法(如溶胶-凝胶聚合和种子生长方法),并提供了其广泛的当前和未来应用(如时尚,航空航天和建筑等领域)的见解。项目研究于2019年5月开始,预计2020年3月完成。在我们的研究期间,我们分析了大量的科学论文,详细介绍了气凝胶的制造工艺、化学和物理性质以及历史。为了补充我们的研究,我们(在AP化学老师的帮助下)在网上购买的小块样品上进行了现场实验。在一次测试中,我们将气凝胶放在固定在本生灯上方支架上的金属环上,点燃燃烧器,然后在气凝胶上放一根火柴(火柴没有点燃,证明了这种材料非凡的隔热能力)。虽然我们的海报在一定程度上是为了展示我们在材料科学领域的课堂研究和实验设计的经验,但最重要的是,它旨在向观众灌输一种对这种新材料充满希望的未来的好奇心和敬畏。
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引用次数: 0
期刊
2020 IEEE Integrated STEM Education Conference (ISEC)
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