Rail-to-Rail Operational in Low-Power Reconfigurable Analog Circuitry

Analog signal processing (ASP) can be used to decrease energy consumption by several orders of magnitude over completely digital applications. Low-power field programmable analog arrays (FPAA) have been previously used by analog designers to decrease energy consumption. Combining ASP with an FPAA, energy consumption of these systems can be further reduced. For ASP to be most functional, it must achieve rail-to-rail operation to maintain a high dynamic range. This work strives to further reduce power consumption in reconfigurable analog circuitry by presenting a novel data converter that utilizes ASP and rail-to-rail operation. Rail-to-Rail operation is achieved in the data converter with the use of an operational amplifier presented in this work. This efficient yet elementary data converter has been fabricated in a 0.5$\mu$m standard CMOS process. Additionally, this work looks deeper into the challenges of students working remotely, how MATLAB can be used to create circuit design tools, and how these developmental tools can be used by circuit design students

A clock and wavefront mechanism for somite formation

Somitogenesis, the sequential formation of a periodic pattern along the antero-posterior axis of vertebrate embryos, is one of the most obvious examples of the segmental patterning processes that take place during embryogenesis and also one of the major unresolved events in developmental biology. In this article, we develop a mathematical formulation of a new version of the Clock and Wavefront model proposed by Pourquié and co-workers (Dubrulle, J., McGrew, M.J., Pourquié, O., 2001. FGF signalling controls somite boundary position and regulates segmentation clock control of spatiotemporal Hox gene activation. Cell 106, 219–232). Dynamic expression of FGF8 in the presomitic mesoderm constitutes the wavefront of determination which sweeps along the body axis interacting as it moves with the segmentation clock to gate cells into somites. We also show that the model can mimic the anomalies formed when progression of the wavefront is disturbed and make some experimental predictions that can be used to test the hypotheses underlying the model

Analysis of Log Hauling Vehicle Accidents in the State of Georgia, USA, 1988–2004

Mechanical failure rates associated with logging vehicle accidents in Georgia are dramatically lower today than they were in 1988–1991 before these trucks became subject to random roadside inspections. Mechanical failure dropped by half for logging tractor-trailers (from 10.9% to 4.8%) and by two-thirds for logging trucks (from 12.9% to 4.2%). Mechanical failure is now the seventh most cited contributing factor in logging tractor-trailer accidents instead of first as it was prior to 1991. Specific types of mechanical failures have also declined sharply. Three potential failure items that are visually checked during roadside inspections – brakes, slick tires, and lights – have seen the most dramatic declines. Brake failure has dropped by two-thirds and improper lights as a factor have almost disappeared. Driver impairment due to use of alcohol or drugs today occurs in less than 0.5 percent of accidents. Factors associated with logging vehicle accidents today in Georgia closely resemble those associated with all trucking accidents generally. Accidents per million tons of wood consumed, however, has increased steadily from 11 in 1991 to 19 per million tons in 2003

The Impact of Writing Intensive Professional Development on High School Teachersa Science Content Knowledge of Energy in Systems

The Communication in Science Inquiry Project CISIP investigated the impact of writing intensive inquiry based professional development on high school teachers science content knowledge of Energy in Systems In particular we investigated whether different forms of assessment provided different information about the depth of teacher knowledge We developed a two-tier Energy Test linked to both national and state science standards which was administered both before and after science teacher particip-ation in 23 hours of professional development on energy in biological and societal systems Our study found that we were successful in relaying content knowledge to the teachers When we analyzed misconceptions in distracter choices and written responses on the same test however we found we were successful in some areas but not in others The application of knowledge gained about energy in systems through writing scientific explanations was the least successful of al

San Juan County Agriculture Profile

This publication includes a report that gives agricultural facts and statistics pertaining to San Juan County

Grand County Agriculture Profile

This publication includes a report that gives agricultural facts and statistics pertaining to Grand County

A professional learning community activity for science teachers: How to incorporate discourse-rich instructional strategies into science lessons

In this article we describe current educational research underlying a comprehensive model for building a scientific classroom discourse community. We offer a professional development activity for a school-based professional learning community, providing specific science instructional strategies within this interactive teaching model. This design activity provides a quick and practical means of transforming science lessons to be more engaging for students. Through this activity teachers can redesign any science lesson by focusing on each of the five core components of a scientific classroom discourse community: (a) scientific inquiry, (b) oral discourse, (c) written discourse, (d) academic language development, and (e) learning principles. By using this structure teachers will be better able to meet the Next Generation Science Standards and facilitate greater interdisciplinary learning. An example of a redesigned water cycle lesson is provided

Sanpete County Agriculture Profile

This publication includes a report that gives agricultural facts and statistics pertaining to Sanpete County

Salt Lake County Agriculture Profile

This publication includes a report that gives agricultural facts and statistics pertaining to Salt Lake County