Time filter

Source Type

Charlotte, NC, United States

Johnson C. Smith University is a private, co-ed, four-year research university of higher learning in the heart of Charlotte, North Carolina, United States. It is affiliated with the Presbyterian Church. JCSU is also a historically black college. JCSU offers an assortment of academic programs, aimed at ensuring that its graduates are prepared for success in the workforce. JCSU is accredited by the Southern Association of Colleges and Schools , National Council for the Accreditation of Teacher Education , Association of Collegiate Business Schools and Programs , and Council on Social Work Accreditation . The school awards Bachelor of Science, Bachelor of Arts and Bachelor of Social Work degrees to its graduates. The school also presents many internship opportunities for its students. Wikipedia.

Bai Y.,Johnson C. Smith University | Wang D.,Christopher Newport University
International Journal of Modelling, Identification and Control | Year: 2011

The dynamic modelling of the tracking gimbals used in a laser tracking system (LTS) is developed in this paper. LTSs are one of the most powerful measurement tools and have been widely used in the robot calibration. They provide super high calibration accuracy and automatic contactless measurement process for robot calibration. The key component used in an LTS is the tracking gimbals (TG) that provide the interactions between the laser beam and the tracking target as well as the direction that the LTS should follow. Obtaining an accurate dynamic model of the TG is the prerequisite to develop and build a LTS successfully. In this paper, a complete dynamic model of the TG used in a LTS is developed using the Lagrange-Euler equations of motion. To the authors' knowledge, this is the first paper in developing a dynamic model for TGs using such method. Copyright © 2011 Inderscience Enterprises Ltd. Source

Bai Y.,Johnson C. Smith University | Wang D.,Christopher Newport University
IEEE Transactions on Fuzzy Systems | Year: 2010

This paper provides a comparison between a novel technique used for the pose-error measurements and compensations of robots based on a fuzzy-error interpolation method and some other popular interpolation methods. A traditional robot calibration implements either model or modeless methods. The measurement and compensation of pose errors in a modeless method moves the robots end-effector to the target poses in the robot workspace and measures the target position and orientation errors using some interpolation techniques in terms of the premeasured neighboring pose errors around the target pose. For the measurement purpose, a stereo camera or other measurement devices, such as a coordinate-measurement machine (CMM) or a laser-tracking system (LTS), can be used to measure the pose errors of the robots end-effector at predened grid points on a cubic lattice. By the use of the proposed fuzzy-error interpolation technique, the accuracy of the pose-error compensation can be improved in comparison with other interpolation methods, which is conrmed by the simulation results given in this paper. A comparison study among most popular interpolation methods used in modeless robot calibrations, such as trilinear, cubic spline, and the fuzzy-error interpolation technique, is also made and discussed via simulations. The simulation results show that more accurate measurement and compensation results can be achieved using the fuzzy-error interpolation technique compared with its trilinear and cubic-spline counterparts. © 2010 IEEE. Source

Dancy M.,Johnson C. Smith University | Henderson C.,Western Michigan University
American Journal of Physics | Year: 2010

We report on the initial results of a web-based survey of 722 physics faculty in the United States regarding their instructional practices. The survey responses indicate that most faculty report knowing about many physics education research curricula and pedagogies and are interested and motivated to try them in their teaching. Howeverself-reports of actual classroom practices indicate that the availability of these curricula and pedagogies has not led to fundamental changes in instruction. Faculty report that time is the biggest impediment to implementing more research-based reforms. These results suggest a need for research-based dissemination that accounts for the complexity of instructional change. © 2010 American Association of Physics Teachers. Source

Wang D.,Christopher Newport University | Bai Y.,Johnson C. Smith University | Zhao J.,University of Ottawa
Transactions of the Institute of Measurement and Control | Year: 2012

A robot manipulator calibration method is proposed using a camera-based measurement system and a neural network algorithm. The position errors at various points within the calibration space are first obtained by camera-based measurement devices. A window consisting of multiple cells surrounding the interpolated positions is used to form the input and output pairs of training data set. A neural network model is utilized to approximate the error surface. The target pose is then compensated for by the position errors obtained by the neural network model. Numerical experiment is performed based on a common industrial set-up. A significant improvement in accuracy is obtained by the proposed techniques in comparison with traditional bilinear analytical methods. © 2010 SAGE Publications. Source

Brown G.,Johnson C. Smith University
The ABNF journal : official journal of the Association of Black Nursing Faculty in Higher Education, Inc | Year: 2012

University and college faculty members may face inappropriate student behavior in a global classroom. This situation can complicate the maintenance of a positive effective learning environment. Student disruption is seen as disturbing behavior that interferes with the faculty member's academic or administrative ability to conduct class, or the ability of other students to profit from the class instruction. Disruptive behavior may threaten or endanger the physical or psychological health, safety or welfare of others. Various types of disruptive behavior and disrespect that university or college faculty are likely to experience include: grandstanding (use the classroom for themselves by monopolizing class discussion with no regard to relevancy to the discussion); prolonged chattering (small cliques of students who engage in private conversations or passing notes to each other); noisy electric devices (cell phones ringing in class, or students talking or text messaging during class time); leaving and entering class (frequently in the absence of notice to professor of illness or other extenuating circumstances); and disputing the professor's authority or expertise (students may be disappointed or unhappy over a grade and may debunk or devalue the professor's judgment, authority and expertise). This action may be in the form of comments in the class or memos to department chair or dean. Persistent speaking without permission and verbal or physical threats to faculty members or other students are also disruptive mannerisms. Working with a diverse student population can present unique challenges. Multicultural issues related to race, ethnicity, gender, physical, emotional or socioeconomic status and sexual orientation might require increased sensitivity, knowledge and self-exploration. Source

Discover hidden collaborations