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- Title
- Study on Reinforced Soft Actuator for Exoskeleton Actuators.
- Creator
- Shuqir, Mohammad, Engeberg, Erik, Florida Atlantic University, College of Engineering and Computer Science, Department of Ocean and Mechanical Engineering
- Abstract/Description
-
This thesis concerns the design, construction, control, and testing of soft robotic actuators to be used in a soft robotic exoskeleton; the Boa Exoskeleton could be used for joint rehabilitation including: wrist, elbow and possibly shoulder or any joint that requires a soft body actuator to aid with bending movement. We detail the design, modeling and fabrication of two types of actuators: Fiber-reinforced Actuator and PneuNet Actuator. Fiber-Reinforced actuator was chosen for the exoskeleton...
Show moreThis thesis concerns the design, construction, control, and testing of soft robotic actuators to be used in a soft robotic exoskeleton; the Boa Exoskeleton could be used for joint rehabilitation including: wrist, elbow and possibly shoulder or any joint that requires a soft body actuator to aid with bending movement. We detail the design, modeling and fabrication of two types of actuators: Fiber-reinforced Actuator and PneuNet Actuator. Fiber-Reinforced actuator was chosen for the exoskeleton due to its higher force. The Fiber-Reinforced actuator molds were 3D printed, four models were made. Two materials were used to fabricate the models: Dragon Skin 30A and Sort-A-Clear 40A. Two number of windings: (n=40) and (n=25), actuators wrapped with carbon fiber. An air tank was used to supply pressure. The actuators were studied at different pressures. Pressure-force relation was studied, and a close to linear relationship was found. Boa Exoskeleton was made for wrist. Electromyography (EMG) was used; Four EMG receptors were put around the arm. EMG was utilized to actuate the Boa Exoskeleton and record the muscle movement. Five tests were done on six human subjects to validate the Boa Exoskeleton.
Show less - Date Issued
- 2018
- PURL
- http://purl.flvc.org/fau/fd/FA00013098
- Subject Headings
- Actuators--Design and construction., Robotic exoskeletons., Actuators--Materials.
- Format
- Document (PDF)
- Title
- A study on the electromagnetic performance of body-worn radio units in the presence of scatterers in the proximity.
- Creator
- Peterson, Vance Howard, Florida Atlantic University, Ungvichian, Vichate, Neelakanta, Perambur S., College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
The research addressed refers to a study on the electromagnetic performance aspects of body-worn radio units operating in the presence of scatterers in close proximity, using analytical, numerical, and experimental methods. The application potentials of such methods include evaluating the integrity of radio units such as cell phones. Consistent with the scope of the study above, considered in this research are specific details on analytical and numerical modeling of the effects of a nearby...
Show moreThe research addressed refers to a study on the electromagnetic performance aspects of body-worn radio units operating in the presence of scatterers in close proximity, using analytical, numerical, and experimental methods. The application potentials of such methods include evaluating the integrity of radio units such as cell phones. Consistent with the scope of the study above, considered in this research are specific details on analytical and numerical modeling of the effects of a nearby conducting cylindrical object on the electromagnetic field near a human-model phantom. Calculations are performed using the Finite Difference Time Domain (FDTD) method. Considered are various separations of the body wearing the test radio unit from the proximal object and polarization of the incident wave. An anechoic chamber and the test setup used for the measurement of EM field amplitudes near a saline-water phantom are described. Within the anechoic chamber, a small shielded loop is used as a field measurement probe and is positioned near the test phantom. The field probe orientation was in the vertical plane for characterizing the prevailing electromagnetic field intensity. This study indicates that variations in the field amplitude near the phantom occur, which are responsive to phantom rotation and measurement distance from the phantom. The electromagnetic field amplitude decreases rapidly with increasing distance between the probe and the surface of the phantom. The analysis is also extended to examine the electromagnetic field distribution in the gap between a human body phantom model and a nearby conducting cylinder. An appropriate three-dimensional FDTD method is presented and applied to a near-field problem of analyzing the influence of proximal conductive objects on fields near a phantom wearing an RF unit.
Show less - Date Issued
- 2004
- PURL
- http://purl.flvc.org/fau/fd/FADT12085
- Subject Headings
- Scattering (Mathematics), Sound-waves (Scattering), Electromagnetic waves--Scattering, Electromagnetism--Computer simulation, Finite differences, Time-domain analysis
- Format
- Document (PDF)
- Title
- Study on the Role oftmRNA in Protecting Escherichia coli Cell Under Oxidative stress.
- Creator
- Kollipara, Gayatri, Li, Zhongwei, Florida Atlantic University, Charles E. Schmidt College of Medicine, Department of Biomedical Science
- Abstract/Description
-
tmRNA is a small stable RNA present in Eubacteria. Through a mechanism called trans-translation, tmRNA mediates ribosome rescue and quality control of proteins and mRNA. In this study, the Escherichia coli (E. coli) mutant lacking tmRNA was demonstrated hypersensitive to oxidative stress. The role of tmRNA-mediated surveillance mechanism in protecting E. coli cell under oxidative stress condition was examined. The tmRNA-mediated tagged protein levels were elevated in cells under oxidative...
Show moretmRNA is a small stable RNA present in Eubacteria. Through a mechanism called trans-translation, tmRNA mediates ribosome rescue and quality control of proteins and mRNA. In this study, the Escherichia coli (E. coli) mutant lacking tmRNA was demonstrated hypersensitive to oxidative stress. The role of tmRNA-mediated surveillance mechanism in protecting E. coli cell under oxidative stress condition was examined. The tmRNA-mediated tagged protein levels were elevated in cells under oxidative stress condition, demonstrating the enhanced need for tmRNA under such condition. Our results suggest that mRNA damage by oxidative stress may cause reduced cell viability, and that tmRNA is required to rescue cells under such condition. Furthermore, our observations showed that tmRNA is required for the optimal growth of E. coli under normal aeration but not under anaerobic condition, suggesting that oxidation ofmRNA is the major reason for requirement oftmRNA during normal aeration.
Show less - Date Issued
- 2007
- PURL
- http://purl.flvc.org/fau/fd/FA00000782
- Subject Headings
- Proteins--Synthesis, Bacterial genetics, Escherichia coli infections, Cells--Evolution
- Format
- Document (PDF)
- Title
- A study on ultra-wideband microstrip Archimedean spiral antenna with a terminating load and conversion from EMC chamber to emulate antenna chamber.
- Creator
- Kinezos, Christos L., Florida Atlantic University, Ungvichian, Vichate, College of Engineering and Computer Science, Department of Computer and Electrical Engineering and Computer Science
- Abstract/Description
-
This thesis describes two major research topics: (i) the design of an UWB LHCP low-profile microstrip antenna of Archimedean spiral version; (ii) Modification of the SAC of the Florida Atlantic University's EMI R&D Laboratory to a FAC to perform the required antenna characterizations for the designed UWB antenna. The microstrip spiral antenna is designed to operate in a traveling wave mode. It is constructed on a typical FR4 substrate and is center-fed through an SMA surface-mount connector....
Show moreThis thesis describes two major research topics: (i) the design of an UWB LHCP low-profile microstrip antenna of Archimedean spiral version; (ii) Modification of the SAC of the Florida Atlantic University's EMI R&D Laboratory to a FAC to perform the required antenna characterizations for the designed UWB antenna. The microstrip spiral antenna is designed to operate in a traveling wave mode. It is constructed on a typical FR4 substrate and is center-fed through an SMA surface-mount connector. An RF chip-resistor located at the outer edge provides impedance matching. The UWB frequency performance of this antenna is among the widest reported in the microstrip antenna literature. The second study refers to a methodology to modify the EMC listed SAC to emulate a FAC. Several pyramidal RF absorbing cones are strategically placed on the reflecting ground surface. The validation between the frequency range 300 MHz to 1 GHz is investigated.
Show less - Date Issued
- 2003
- PURL
- http://purl.flvc.org/fcla/dt/13033
- Subject Headings
- Microstrip antennas, Ultra-wideband devices, Electromagnetic compatibility
- Format
- Document (PDF)
- Title
- A STUDY TO DETERMINE DETERRENTS TO DEVIANT SCHOOL BEHAVIOR AS PERCEIVED BY MIDDLE SCHOOL STUDENTS.
- Creator
- BROWN, ROBERT H., Florida Atlantic University, Smith, Lawrence E.
- Abstract/Description
-
The purpose of this study was to identify factors serving as deterrents to deviant school behavior as perceived by students. Emphasis was placed on the identification of factors students perceived as: 1. Having prevented non-deviant students from deviating from the school's code of conduct 2. Deterrents which may have prevented deviant students from violating the school's code of conduct Questions explored and answered in this study were: 1. How do middle school students perceive deterrents...
Show moreThe purpose of this study was to identify factors serving as deterrents to deviant school behavior as perceived by students. Emphasis was placed on the identification of factors students perceived as: 1. Having prevented non-deviant students from deviating from the school's code of conduct 2. Deterrents which may have prevented deviant students from violating the school's code of conduct Questions explored and answered in this study were: 1. How do middle school students perceive deterrents for deviant school behavior? 2. How do parents', teachers', and administrators' efforts affect student school behavior? 3. What can schools do in the area of deterring deviant behavior? 4. What effect, if any, do the fa mil y and/or significant others have on deterring deviant behavior of students? 5. What can students do in the area cf helping themselves and others to practice good behavior? 6. What are some of the causes of deviant school behavior and delinquency? Conclusions: 1. Data from this study revealed that middle school students believe schools can deter deviant behavior by the practical application of good school-home communication, group counseling, good teaching, teacher-student conferences, individual counseling, and extra-curricular activities 2. Deviant school behavior is indicative of many factors: curriculum, teacher performance, administrative performance, horne conditions, emotional disabilities, learning disabilities, in-school management, and extracurricular activities
Show less - Date Issued
- 1979
- PURL
- http://purl.flvc.org/fcla/dt/11721
- Subject Headings
- Deviant behavior, School discipline
- Format
- Document (PDF)
- Title
- A STUDY TO DETERMINE THE EFFECTIVENESS OF THE SEMANTIC DIFFERENTIAL AS A MEANS FOR MEASURING ATTITUDES OF TEACHERS TOWARD PUBLIC SCHOOL SUPERVISORY PERSONNEL.
- Creator
- WRIGHT, WILLIAM FRANCIS, Florida Atlantic University
- Abstract/Description
-
This study sought to accomplish three things: 1) to develop a model which would use semantic differential techniques to measure the intensity of teacher attitudes toward public school supervisory concepts; 2) to determine if teachers' attitudes differ significantly in the subgroups of the study's population when analysis of variance is applied to the data supplied by the model instrument; and 3) to determine which rotation, orthogonal or oblique, more closely approximates the simple structure...
Show moreThis study sought to accomplish three things: 1) to develop a model which would use semantic differential techniques to measure the intensity of teacher attitudes toward public school supervisory concepts; 2) to determine if teachers' attitudes differ significantly in the subgroups of the study's population when analysis of variance is applied to the data supplied by the model instrument; and 3) to determine which rotation, orthogonal or oblique, more closely approximates the simple structure when factor analysis is applied to the data. Analysis of the data was based on the responses of 217 public school teachers who were enrolled in graduate courses located at the University of Central Florida and Florida Atlantic University. Each subject responded to eighteen bipolar scales, evaluating seven supervisory concepts. Analysis of the data was accomplished by three computer programs, Kaiser's "Little Jiffy, Mark IV," to measure sampling adequacy, reliability, and degree of empirical confirmation of the model; analysis of variance to determine whether the subgroups were statistically significant and evaluate the relationship between the variables in the groups; and factor analysis applied to the data which incorporated two methods of rotation, orthogonal and oblique, to determine which rotation more closely approximates the simple structure. Findings: The findings may be summarized as follows: 1. Teachers' responses clustered into four principal factors, here presented in rank order of extraction--evaluation, potency, activity, and stability. The evaluation factor accounted for over 55 percent of the common variance. 2. The concept instrument, bipolar scales, and semantic differential techniques can be combined to differentiate teacher attitudes concerning specific concepts. 3. A comparison of the mean variable scores for concept instruments revealed that responses by this study's teachers rated the positions of principal, director and superintendent very low. 4. Data comparing such groups as university attending, school districts of employment, and age groups by analysis of variance techniques revealed statistical differences that were substantive when evaluating the concepts of dean, principal, director and superintendent. 5. Teaching level and male/female teacher group accounted for statistical differences that did not prove to be substantive over all concepts. 6. A comparison of the quartimax rotated factor matrix and the oblique pattern matrix revealed that clusters of variables are more clearly defined on the pattern matrix. Near zero loadings are minimized and high loadings are maximized. However, on several of the concept data runs the differences were not clearly defined. Conclusions: 1. The model developed for measuring teacher attitudes was reliable and demonstrated a high degree of empirical confirmation. 2. Supervisory job does appear to be a factor influencing teachers' attitudinal responses on the bipolar variables. 3. University of attendance, school district of employment, and age group are factors which produce significant differences in teacher attitudes. 4. Factor analysis involving either orthogonal or oblique should be selected based on the objectives of the research project. Both methods may be utilized, results compared, and the solution which provides the best answer for the study involved should be selected.
Show less - Date Issued
- 1980
- PURL
- http://purl.flvc.org/fcla/dt/11746
- Subject Headings
- Teachers--Attitudes, School personnel management
- Format
- Document (PDF)
- Title
- A STUDY TO DETERMINE THE EXTENT TO WHICH SELECTED FLORIDA EDUCATORS, COMMUNITY LEADERS, AND LEGISLATORS AGREE ON WHAT SHOULD CONSTITUTE MINIMUM BASIC AND FUNCTIONAL SKILLS REQUIRED FOR SECONDARY SCHOOL GRADUATION.
- Creator
- COLMAN, CHARLES KINGSBURY, Florida Atlantic University, Wiegman, Robert R.
- Abstract/Description
-
The purpose of this study was to determine the extent to which selected Florida Secondary School Principals, Minority Educators and Community Leaders, and Members of the Legislative Education Committees, agree on what should constitute minimum basic and functional skills required for secondary school graduation. Questions to be answered and explored in this study were: 1. What minimum basic and functional skills should constitute the graduation requirement for all students graduating from...
Show moreThe purpose of this study was to determine the extent to which selected Florida Secondary School Principals, Minority Educators and Community Leaders, and Members of the Legislative Education Committees, agree on what should constitute minimum basic and functional skills required for secondary school graduation. Questions to be answered and explored in this study were: 1. What minimum basic and functional skills should constitute the graduation requirement for all students graduating from public secondary schools? 2. Does or should the curriculum of the public secondary school provide for the transference of basic skills in mathematics and language to their practical application as a functional skill? 3. What readability level should be required of all students graduating from public secondary schools? 4. Are there or should there be remediation programs included in the curriculum of public secondary schools for those students who have been unable to achieve satisfactory progress? 5. How are or should existing or proposed basic skills and functional skills instructional programs be evaluated? 6. Are current Florida Secondary School Graduation Standards as outlined in Section 232.245 of the Florida Statute, titled "Pupil Progression," adequate?
Show less - Date Issued
- 1978
- PURL
- http://purl.flvc.org/fcla/dt/11708
- Format
- Document (PDF)
- Title
- A STUDY TO DETERMINE THE EXTENT TO WHICH SELECTED SCHOOL COMMUNITY MEMBERS ARE INVOLVED IN THE PARTICIPATORY MANAGEMENT PROCESS.
- Creator
- MITCHELL, ROY ISHMAN., Florida Atlantic University
- Abstract/Description
-
Purpose: This study was designed to examine the perceptions of selected school community members to determine to what extent they perceived their involvement in the participatory management process. Conclusions and Recommendations: It is concluded from the results of these analyses that administrators tend to believe that members of the school community are involved in the participatory management process to a greater extent than do teachers, students, advisory council members and counselors....
Show morePurpose: This study was designed to examine the perceptions of selected school community members to determine to what extent they perceived their involvement in the participatory management process. Conclusions and Recommendations: It is concluded from the results of these analyses that administrators tend to believe that members of the school community are involved in the participatory management process to a greater extent than do teachers, students, advisory council members and counselors. Further, it was concluded that perhaps administrators should review the management practices in their schools if they intend to operate according to the principles of participatory management and if they really want to discourage the issuance of further legislative mandates, collective bargaining demands, public criticisms and psychological withdrawls. Organizations with commitments to enlightened leadership have been proven to be the most effective and efficient. The lack of involvement in deciding matters that affect them decreases subordinates' sense of commitments and, therefore, limits the full implementation of decisions. If schools are to become more effective and efficient, all members of the school community must be provided ways to become integral parts of the decision-making process. Administrators must be willing to share their authority. The responsibility for correcting these perceptions rest with administrators, for they are the educational leaders of the schools.
Show less - Date Issued
- 1977
- PURL
- http://purl.flvc.org/fcla/dt/11686
- Subject Headings
- School management and organization--Decision making, Teacher participation in administration--United States
- Format
- Document (PDF)
- Title
- Studying.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008133
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008323
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying at the FAU Library.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008444
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying for class at the Sunken patio.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008436
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying in a classroom.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008455
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying in front of the FAU Library.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008414
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying in the Dorm, 1967.
- Creator
- James G. McCulla
- Date Issued
- 1967
- PURL
- http://purl.flvc.org/fau/2795821
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying in the Dorm, 1967.
- Creator
- James G. McCulla
- Date Issued
- 1967
- PURL
- http://purl.flvc.org/fcla/dt/2795646
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying near the Breezeway.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008478
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying outside.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008399
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying outside.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008356
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)
- Title
- Studying outside FAU Library.
- Creator
- Florida Atlantic University
- Abstract/Description
-
FAU Boca Campus 1980s
- PURL
- http://purl.flvc.org/fau/fd/FA00008476
- Subject Headings
- Florida Atlantic University -- History, Florida Atlantic University -- Students
- Format
- Image (JPEG2000)