2,993 research outputs found

    Design and application of a wireless torque sensor for CNC milling

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    A Smart Machining System for Computer Numerical Control (CNC) Milling continually adjusts the cutting process parameters to optimize for cutting tool life and material removal rate. The system depends on sensors to gather information from the machine during cutting, but commercially available sensors detract from the effectiveness of the cutting system by lowering the system stiffness. This research focuses on the development of the electronics for a Smart Tool Holder (STH) and potential applications such as measurement of mechanical cutting power and suppression of chatter. The STH is a standard milling tool holder modified to hold a torque strain gauge bridge, a thermocouple and a Bluetooth radio transmitter. The STH is meant to overcome some of the different limitations imposed by bed dynamometers, microphones and spindle power sensors without reducing the system stiffness. Comparison of the mechanical power estimates from the STH and a conventional power sensor showed 10% difference

    Thanks To You, I\u27m Alive

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    Antonio Nichols Artist Statement: In this project I am using figurative painting to explore the meaning of relationships/emotion and my connection to the people I am painting. I question what this means and how each individual’s identity ties to mine and why it may or may not matter. “Thanks to You, I’m Alive,” the title of this project, encompasses the message I am sending not only to the individuals I painted but also to the viewer because there is a certain exclusivity in who I decided to paint. I want the connection I have with these people to not only be seen in the painting but in the care and rendering of the painting as well. This has often caused me to paint each individual slightly more beautiful than they look in real life, enhancing details that might not be completely true to the individuals physical being. Structurally, I contemplated lighting, positions, color, and order of each individual to create cohesive pieces. The way I laid the paint down is plainly about my love for simple and complex characteristics; as I found clothing to be more beautiful with simpler shapes, backgrounds to be more beautiful with directionality of the brush strokes, and the subjects to be more beautiful with complex blending. Conceptually, I focused on each individual’s uniqueness. To uncover emotions from each subject I decided to have a conversation with each individual before painting them in specific or non-specific locations. Location or lack thereof is important because it describes the basis of each relationship. Family members have specific locations because I tie the beginning of our relationships to places such as home. The same can be said about the one woman who has a semi-specific setting because she is my partner. As for my friends, I do not connect our relationships to specific settings because I do not find location as important. Although, my project navigates my social relationship with the people most important in my life, it is also a slight commentary on black identity. The majority of the individuals I have painted are people of color, not because I choose them for that reason but because they just so happen to be the people that feature most prominently in my life. I believe this is the case because black and brown individuality and diversity can be lacking in Predominantly White Institutions.This can be seen in the fact that in this project I had to teach myself how to paint black and brown skin. The commentary, to me, is not political in the slightest. It only means to amplify my belief that blackness can and should exist in white spaces. My experience as usually the only black person in these spaces connects back to why these are the people I am closest to in the first place and why I have decided to bring them into the space as wel

    Roles and influence of the Governor\u27s office in state policy-making for higher education: a two-state case study

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    This study focused on participant perceptions of roles and perceived influence of state Governors and their staffs in higher education policy-making. Reported increased activity by Governors and their staffs in education policy-making, coupled with increasing public demands and limited or reduced state resources for higher education lend relevance to this topic. Literature also suggests that higher education leaders and state officials may have differing views of their roles in state policy-making processes;The study was designed to capture participant perceptions as to processes, and roles and influence therein, not specific policy outcomes. Given the interpersonal and dynamic nature of the policy-making process, these perceptions were the focus of the study;Qualitative case study methodology was used in this study. Initially, a preliminary survey was administered to Governor\u27s education policy advisors from ten states. Thereafter, a field study was conducted to examine policy-making in the states of Michigan and Kentucky. The study presents relevant background information on each state and commentary from approximately 50 in-depth personal interviews with governmental and education leaders in these states;The researcher has worked as a staff member of his state legislature, Governor\u27s office, and as Executive Director of his state Board of Regents prior to assuming his current position as a Special Assistant to the President of Iowa State University. The commentary and emergent themes of the study are informed by those experiences as well as study data and existing literature;Study findings included a confirmation of the state-to-state variation in: public sector system design, social/economic/political culture, expectations for Executive branch involvement in higher education policy-making, and the roles and influence of the Governor and staff. While some similarities in states\u27 approaches were noted as well, participants believed the circumstances in their state were unique from any other;The perceptions by and of some very experienced Governor\u27s aides and state government and higher education officials in the study states may be of value in assessing similar situations. The study design, however, does not provide for quantifiable, transferable results that can necessarily be applied to differing points in time or differing locations

    Completion Report: Arkansas State Pesticides in Ground Water Monitoring Project Phase V: Vulnerable areas in Jackson, Monroe, Lawrence and Lonoke Counties

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    In 1996, sixty-seven water samples were drawn from 65 wells, including 62 new wells and 3 wells sampled previously . One Woodruff County well and two Pulaski County wells were resampled. Thirty-two samples were drawn from 30 wells in Monroe County (well #1 was sampled 3 times during this phase) . Ten wells in Jackson County, 12 wells in Lawrence County and 10 wells in Lonoke were also tested (Figures 1-5) . With the completion of Phase V, the number of wells tested has risen to 231 with a total of 258 samples analyzed . Initially, the wells were tested for 13 pesticides and ni~rate. Two more pesticides, aldicarb and carbofuran were added to the analyte list during Phase V. The analyte list is shown in Table 3 . All results from all the wells are listed in Appendix A. Quality control information for these data follow the results. The Phase V Quality Assurance Report is included in this document as Part II

    What is the most effective and safe malaria prophylaxis during pregnancy?

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    Chloroquine and mefloquine have superior safety profiles in pregnancy, though all antimalarials are effective for prophylaxis. Antimalarials will decrease the severity of maternal malaria infection and malaria-associated anemia, while decreasing the incidence of low birth weight and perinatal death in women having their first or second baby (strength of recommendation [SOR]: A, based on systematic review of consistent, good-quality patient-oriented evidence)

    Ground Water Monitoring Project for Arkansas, Phase III

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    This report is composed of two parts. The first part is an interpretation of the pesticide and nitrate data collected in Woodruff County based on samples collected during 1994. Because there is an indication that there were hydrological differences between 1994 and 1995, and because most of the pesticide data is from 1994, this interpretive portion is restricted to 1994 data. Six wells initially sampled in 1994 that contained pesticides had continuing contamination in re-sampling in 1994 and 1995. Part II lists a seventh well in Woodruff County that contained pesticides in February and May of 199
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