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Description
The semiconductor field of Photovoltaics (PV) has experienced tremendous growth, requiring curricula to consider ways to promote student success. One major barrier to success students may face when learning PV is the development of misconceptions. The purpose of this work was to determine the presence and prevalence of misconceptions students may have for three PV semiconductor phenomena; Diffusion, Drift and Excitation. These phenomena are emergent, a class of phenomena that have certain characteristics. In emergent phenomena, the individual entities in the phenomena interact and aggregate to form a self-organizing pattern that can be observed at a higher level. Learners develop a different type of misconception for these phenomena, an emergent misconception. Participants (N=41) completed a written protocol. The pilot study utilized half of these protocols (n = 20) to determine the presence of both general and emergent misconceptions for the three phenomena. Once the presence of both general and emergent misconceptions was confirmed, all protocols (N=41) were analyzed to determine the presence and prevalence of general and emergent misconceptions, and to note any relationships among these misconceptions (full study). Through written protocol analysis of participants' responses, numerous codes emerged from the data for both general and emergent misconceptions. General and emergent misconceptions were found in 80% and 55% of participants' responses, respectively. General misconceptions indicated limited understandings of chemical bonding, electricity and magnetism, energy, and the nature of science. Participants also described the phenomena using teleological, predictable, and causal traits, indicating participants had misconceptions regarding the emergent aspects of the phenomena. For both general and emergent misconceptions, relationships were observed between similar misconceptions within and across the three phenomena, and differences in misconceptions were observed across the phenomena. Overall, the presence and prevalence of both general and emergent misconceptions indicates that learners have limited understandings of the physical and emergent mechanisms for the phenomena. Even though additional work is required, the identification of specific misconceptions can be utilized to enhance semiconductor and PV course content. Specifically, changes can be made to curriculum in order to limit the formation of misconceptions as well as promote conceptual change.
ContributorsNelson, Katherine G (Author) / Brem, Sarah K. (Thesis advisor) / Mckenna, Ann F (Thesis advisor) / Hilpert, Jonathan (Committee member) / Honsberg, Christiana (Committee member) / Husman, Jenefer (Committee member) / Arizona State University (Publisher)
Created2014
Description
Adaptability has emerged as an essential skill in the engineering workforce due to constant technological and social change, engineering grand challenges, and the recent global pandemic. Although engineering employers and national reports have called for increased adaptability among engineers, what adaptability means in the engineering workplace has not been investigated. This dissertation uses qualitative semi-structured critical incident interviews with engineering managers from four corporations to better understand their perceptions of adaptability and then incorporates these findings into a scenario-based intervention for the engineering classroom. Thematic analysis of the interviews with engineering managers expanded existing frameworks for workplace adaptability to provide an engineering-specific understanding of adaptability as a construct. Managers’ perceptions of adaptability span six dimensions, each important when teaching this competency to engineering students: Creative Problem Solving; Interpersonal Adaptability; Handling Work Stress; Dealing with Uncertain and Unpredictable Situations; Learning New Technologies, Tasks, and Procedures; and Cultural Adaptability. Managers’ beliefs about the importance of a balanced approach to being adaptable in different work contexts, and the influence of personal characteristics such as self-awareness and having had specific experiences related to being adaptable, emerged from the findings as well. Composite narratives reflecting real-life situations encountered by engineers in the workplace were developed based on findings from the engineering manager interviews to provide greater texture to the data. Six of the narratives mapped to the six dimensions of adaptability identified in the thematic analysis, while the seventh narrative illustrated the importance of balance and context when deciding whether and how to be adaptable. They revealed how multiple dimensions of adaptability work together and that contextual factors like support from managers and coworkers are integral to an engineer’s adaptability. The narratives were condensed into two scenarios for use in a classroom-based intervention with first-year engineering students at a large public university. After the intervention, many students’ definitions of adaptability became more multi-dimensional and reflective of adaptability context and balance. Students also reported a better understanding of engineering work, an expanded definition of adaptability, greater delineation of adaptability, increased self-awareness, greater appreciation for the importance of adaptability balance, and enhanced feelings of job preparedness.
ContributorsSajadi, Susan (Author) / Brunhaver, Samantha R (Thesis advisor) / Kellam, Nadia N (Committee member) / Mckenna, Ann F (Committee member) / Arizona State University (Publisher)
Created2022