2 research outputs found
Information seeking and use by low-level students
This paper reports on an exploratory study of information seeking and use in high school students with a low level of information skills and academic competency. Seven students in the 11th grade Remedial Education Program class in American Literature and Composition completed a class project that involved somewhat comprehensive information seeking and use. Data were collected through observation and interview (with students, the teacher, and two library media specialists). All documents each student produced in completing the class project were gathered for data analysis. The preliminary findings of the study indicated that students experienced a great deal of difficulty in the cognitive and affective demands that their tasks required and suggested that technological and instructional mediation would motivate the students’ interest in their information seeking and use. The paper concludes with some important implications that can provide a basis for de! signing information literacy instructions for low-level students
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Biodegradable, flexible silicon nanomembrane-based NO x gas sensor system with record-high performance for transient environmental monitors and medical implants
Abstract: A novel transient electronics technology that is capable of completely dissolving or decomposing in certain conditions after a period of operation offers unprecedented opportunities for medical implants, environmental sensors, and other applications. Here, we describe a biodegradable, flexible silicon-based electronic system that detects NO species with a record-breaking sensitivity of 136 Rs (5 ppm, NO2) and 100-fold selectivity for NO species over other substances with a fast response (~30 s) and recovery (~60 s). The exceptional features primarily depend on not only materials, dimensions, and design layouts but also temperatures and electrical operations. Large-scale sensor arrays in a mechanically pliable configuration exhibit negligible deterioration in performance under various modes of applied loads, consistent with mechanics modeling. In vitro evaluations demonstrate the capability and stability of integrated NOx devices in severe wet environments for biomedical applications