Engineering Commons^™

Effects Of Learner-Instructor Relationship Building Strategies In Online Video Lessons, Yanghee Kim, Jeffrey Thyne

Yanghee Kim

Although research has demonstrated that an increased rapport between instructors and learners can positively relate with increased learning gains, perhaps mediated by the positive attitudes toward the course and self-efficacy beliefs in the coursework, little has been done to test what instructional strategies might increase this rapport in online video-based instruction. This study compared online video-based instruction that made use of relationship-building strategies with online video-based instruction that did not use those strategies. The two instructions were identical in every other way. The results showed that the attitudes of the college students were positively affected by the relationship building strategies …

Pedagogical Agents, Yanghee Kim

Yanghee Kim

No abstract provided.

Grassroots Or Returning To One’S Roots? Unpacking The Inception Of A Youth-Focused Community Makerspace, Victor R. Lee, Whitney L. King, Ryan Cain

Victor R Lee

In this paper, we describe the individuals and factors contributing to the emergence of a community makerspace in a small city in the United States. As research into how makerspaces have come into existence is still in a nascent stage, this single case study is intended to describe and highlight some of the complexities involved in creating such a facility. Based on analysis of onsite observations, interviews of adults connected with the space, and electronic communications, we present a story of how two co-founders of a youth-focused makerspace went from having initial interest in extracurricular activities for their own children …

Playing With A Robot To Learn English Vocabulary, Yanghee Kim, Diantha Smith, Namju Kim, Tianyu Chen

Yanghee Kim

A robot-based English curriculum called The Missing Code has been developed to teach English vocabulary to young children whose home language is one other than English. Guided by theories in children’s learning and motivation, the curriculum was designed to be developmentally appropriate and engaging for children who were 3-5 years old, carefully balancing the familiar and the new. The development process was characterized by iterative cycles of initial design, user testing, and refinement. Through multiple observations of child-robot play in situ, it was noted that children easily learned how to interact with the robot and showed sustained interest and engagement …

Gendered Socialization With An Embodied Agent: Creating A Social And Affable Mathematics Learning Environment For Middle-Grade Females, Yanghee Kim, J. Lim

Yanghee Kim

This study examined whether or not embodied-agent-based learning would help middle-grade females have more positive mathematics learning experiences. The study used an explanatory mixed-methods research design. First, a classroom-based experiment was conducted with one hundred and twenty 9th-graders learning introductory algebra (53% male and 47% female; 51% Caucasian and 49% Latino). The results revealed that learner gender was a significant factor in the learners’ evaluations of their agent (η2 = .07), the learners’ task-specific attitudes (η2 = .05), and their task-specific self-efficacy (η2 = .06). In-depth interviews were then conducted with 22 students selected from the experiment participants. The interviews …

Digital Peers To Help Children's Text Comprehension And Perception, Yanghee Kim

Yanghee Kim

Affable Reading Tutor (ART) is an online reading lesson designed for children who start reading to comprehend. A digital, human-like character (virtual peer) in ART serves as a peer model that demonstrates the use of the reading comprehension strategy questioning to help improve the learners’ comprehension of expository texts. This study, with 141 boys and girls in the fourth and fifth grades in the United States, examined the effects of virtual-peer presence (presence vs. absence vs. control) on learners’ text comprehension and also the effects of learner gender and virtual-peer attributes (human-like male vs. human-like female vs. robot still image) …

Enhanced Purity Andresolution Via Laser Assistedelectron Beam Induced Deposition Of Platinum,, Nick A. Roberts, J. D. Fowlkes, G. A. Magel, P. D. Rack

Nick Roberts

We introduce a laser assisted electron beam induced deposition (LAEBID) process which is a nanoscale direct write synthesis method that integrates an electron beam induced deposition process with a synchronized pulsed laser step to induce thermal desorption of reaction by-products. Localized, spatially overlapping electron and photon pulses enable the thermal desorption of the reaction by-product while mitigating issues associated with bulk substrate heating, which can shorten the precursor residence time and distort pattern fidelity due to thermal drift. Current results demonstrate purification of platinum deposits (reduced carbon content by ~50%) with the addition of synchronized laser pulses as well as …

In Situ Laser Processing In A Scanning Electron Microscope, Nick Roberts

Nick Roberts

Laser delivery probes using multimode fiber optic delivery and bulk focusing optics have been constructed and used for performing materials processing experiments within scanning electron microscope/focused ion beam instruments. Controlling the current driving a 915-nm semiconductor diode laser module enables continuous or pulsed operation down to sub-microsecond durations, and with spot sizes on the order of 50 µm diameter, achieving irradiances at a sample surface exceeding 1 MW/cm2. Localized laser heating has been used to demonstrate laser chemical vapor deposition of Pt, surface melting of silicon, enhanced purity, and resistivity via laser annealing of Au deposits formed by electron beam …

The Impact Of User Attributes And User Choice In An Agent-Based Environment, Yanghee Kim, Quan Wei

Yanghee Kim

This study examined the impact of learners’ attributes (gender and ethnicity) on their choice of a pedagogical agent and the impact of the attributes and choice on their perceptions of agent affability, task-specific attitudes, task-specific self-efficacy, and learning gains. Participants were 210 high-school male and female, Caucasian and Hispanic students who worked at computer-based algebra integrated with pedagogical agents. The results indicated, first, that students preferentially chose a same-gender agent and a same-ethnicity agent, supporting similarity-attraction theory. Second, males who chose an agent showed more positive attitudes toward working at the learning environment than did males who were assigned to …

Phonon Wave-Packet Simulations Of Ar/Kr Interfaces For Thermalrectification, Nick A. Roberts, D. G. Walker

Nick Roberts

The frequency and direction dependence of transmission coefficients at interfaces was investigated theoretically. The interfaces are formed by having two Lennard-Jones materials differing in mass and interatomic potential equally divided at the center of an fcc lattice system. A single frequency wave-packet is generated at one end of the system and allowed to propagate through the system until all interactions with the interface are complete. The transmission coefficient is then calculated by comparing the energy of the packet that is transmitted with the original wave-packet. Results show a difference in transmission when the wave-packet originates from opposite sides.

Gathering Leadership Momentum Across Great Distances: Creating An Online Community Of Practice, Erin L. Davis, Danielle Theiss-White

Erin Davis

At the 2007 Mountain Plains Library Association Leadership (MPLA) Institute, held in New Mexico, USA, eight academic librarians formed an online multi-state, multigenerational community of practice. MPLA is a twelve-state library association within the United States. Using Google Groups™, the members formed an online environment called the MPLA Community of Practice for continuing development of the leadership skills presented at the Institute. These early-career librarians represent diverse educational backgrounds and work in libraries serving varied populations with differing disciplinary emphases.

The group meets monthly with each member preparing and facilitating online discussions, complete with personal assessments, topical readings, and questions. …

A Social-Cognitive Framework For Designing Pedagogical Agents As Learning Companions, Yanghee Kim, Amy L. Baylor

Yanghee Kim

Teaching and learning are highly social activities. Seminal psychologists such as Vygotsky, Piaget, and Bandura have theorized that social interaction is a key mechanism in the process of learning and development. In particular, the benefits of peer interaction for learning and motivation in classrooms have been broadly demonstrated through empirical studies. Hence, it would be valuable if computer-based environments could support a mechanism for a peer-interaction. Though no claim of peer equivalence is made, pedagogical agents as learning companions (PALs) -- animated digital characters functioning to simulate human-peer-like interaction -- might provide an opportunity to simulate such social interaction in …

Content-Based English Learning Through Pedagogical Agents, Yanghee Kim, P. Punahm, Y. Ko

Yanghee Kim

This paper suggests how an advanced technology called pedagogical agents can be applied to English education to benefit learners across ages through computer-assisted language learning (CALL) and content-based language learning (CBLL). CALL, when designed appropriately, has positively influenced the development of a learner’s linguistic proficiency and communicative competence (Chun, 1994; Fotos & Browne, 2004). CBLL integrates language learning with subject-matter learning to make language learning more meaningful (Snow, 2001; Swain, 1998). However, the conventional CALL programs are often criticized for the lacking a social context, considered essential for successful language learning ( Warschauer, 2004). Also, CBLL seems rarely applied to …

Reovirus Removal And Inactivation By Slow Rate Sand Filtration, L. K. Mcconnell, Ronald C. Sims, B. B. Barnett

Ronald Sims

No abstract provided.