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Electron mobility in the growth direction was measured using space charge limited current techniques in device-type nin structure nanocrystalline Si:H and nanocrystalline Ge:H structures. The films were grown on stainless steel foil using either hot wire or remote plasma enhanced chemical vapor deposition techniques. Grain size and crystallinity were measured using x ray and Raman spectroscopy. The size of grains in films was adjusted by changing the deposition conditions. It was found that large ⟨220⟩ grain sizes (∼56nm)" role="

On August 25, 2022, the White House Office of Science and Technology Policy (OSTP) released a memo regarding public access to scientific research. Signed by Director Alondra Nelson, this updated guidance eliminated the 12-month embargo period on publications arising from U.S. federal funding that had been allowed from a previous 2013 OSTP memo. While reactions to this updated federal guidance have been plentiful, to date there has not been a detailed analysis of the publications which would fall under this new framework. The OSTP released a companion report along with the memo, but it only provided a broad estimate of total numbers affected per year. Therefore, this study seeks to more deeply investigate the characteristics of U.S. federally funded research over a 5-year period from 2017–2021 to better understand the updated guidance’s impact. It uses a manually created custom filter in the Dimensions database to return only publications that arise from U.S. federal funding. Results show that an average of 265,000 articles were published each year that acknowledge U.S. federal funding agencies, and these research outputs are further examined by publisher, journal title, institutions, and Open Access status. Interactive versions of the graphs are available online at https://ostp.lib.iastate.edu/. Peer Review https://publons.com/publon/10.1162/qss_a_00237

Interlibrary Loan (ILL) is a service offered by libraries to supply patrons with materials which are not immediately available for lending. This could be for many reasons; the library might not own the item, the library may own a copy but it is already checked out to another patron, or the assignment of a required but expensive textbook spurs high demand for a particular title. Analysis of historical ILL request data is a useful exercise to undertake as each request represents a patron with an information need which was not able to be immediately filled by the library's collection. Each ILL request comes with a guaranteed circulation of at least one interested patron, and the request information is compiled in a dataset and preserved. Loans which are not able to be filled are still recorded and included in the dataset. Investigating trends and tendencies of a user base through this data can lead to more informed collection development practices, and understanding these data sets can reveal gaps in coverage or highlight areas where the user community may find the collection lacking. This study is an analysis of five years worth of Iowa State University's ILL requests of print books, spanning calendar years 2013-2017. 18,841 borrowing requests were analyzed, and monograph title data available for conducting this analysis include loan author, title, year, publisher, edition, and lender library. Patron information includes department affiliation and status; no further identifying information is recorded in the dataset used here. This analysis focuses mostly on requests made by patrons from engineering departments, and it analyzes trends over time by constructing visualizations to look at: • the most active academic departments and their request activity over time • the most heavily requested titles • requests by patron status (undergraduate, graduate, faculty, staff, unaffiliated) • the total number of requests made over time • what peer libraries are used to fill the requests This work focuses on requests for print books only; the scope does not include electronically delivered PDF journal articles, book chapters, or conference proceedings. The analysis is done in the statistical software JMP, and the procedure to automatically create the plots which appear in this paper has been coded, saved, and uploaded for others to use or adapt to their home institution's ILL data sets at: https://github.com/eschares/ILL-analysis This study is intended to illuminate the ILL request activity at a large, public, land-grant university in the United States, demonstrate the tendencies and trends of the campus community, and discover where users' information needs are not immediately being met through the print collection. This work can inform future collection development activities not only at the local institution but also at other universities worldwide.

This proposal describes the FLEx (Forward Learning Experience) program, a mobile learning environment in a 16-foot trailer designed to deliver advanced technology outreach to students around the state of Iowa. A joint effort of Iowa State University's College of Design, College of Engineering, and Extension and Outreach, the FLEx has engaged 35,000 K-12 students, educators, and families in 171 events since the fall of 2014. The trailer provides hands-on experiences with virtual reality, immersive visualization, prototyping, augmented reality through an Oculus Rift, interactive circuit building, a Makerbot for 3D printing, and a CNC (computer numerical control) router for complex precision material cutting. The FLEx utilizes learning theories such as constructivist, experiential and situational learning, universal design and game theory, and supports tinkering, play, and self-directed exploration. An early informal program review showed that Design and STEM interest among grades 3-8 increased 72% due to exposure to the FLEx. The FLEx is a groundbreaking program which improves a land-grant university's potential to reach its state constituents in a novel and focused manner. The program has received national awards, recognition, and interest in its early and initial configuration. Future work will partner with University Extension and 4-H to build capacity to increase exposure and provide this experience to many more students across the state, with a particular focus on supporting rural students and underserved communities. Research is ongoing and being formally proposed to show the educational benefits of the program through workshops and longterm positive outcomes in partnership with state-level educational task forces.