scholarly journals TED Project: Conjugating Technology Development and Educational Activities

Aerospace ◽  
2019 ◽  
Vol 6 (6) ◽  
pp. 73 ◽  
Author(s):  
Lorenzo Olivieri ◽  
Francesco Sansone ◽  
Matteo Duzzi ◽  
Alessandro Francesconi
Keyword(s):  
Educational Outcomes ◽  
Technology Development ◽  
Scientific Publication ◽  
Educational Programs ◽  
Proximity Operations ◽  
Parabolic Flights ◽  
Electromagnetic Interactions ◽  
The University ◽  
And Control ◽  
Rendezvous And Docking

TED (Tethered Electromagnetic Docking) is a system proposed by a group of researchers and students of the University of Padova for close rendezvous and docking between spacecraft. It consists in a small tethered probe ejected by the chaser, reaching the proximity of the target with a controlled deployment, and then magnetically guided by a receiving electromagnet mounted on it. Because of the generated magnetic field, alignment and mating are possible; then, as the tether is rewound, the chaser is able to dock with the target. To perform a preliminary verification of TED, three groups of students have been involved in the project and contributed to the evaluation of its critical technologies in reduced gravity: in the framework of ESA “Drop your Thesis!” 2014 and 2016 campaigns the experiments FELDs and STAR focused on the test of the tether deployment and control, while PACMAN, in the framework of ESA “Fly Your Thesis! 2017” parabolic flights campaign, tested proximity operations by means of electromagnetic interactions. In this paper, a description of TED concept and its development roadmap is presented, introducing the critical technologies tested by FELDs, STAR, and PACMAN experiments. The second part of the paper focuses on the educational outcomes of the three experiments, introducing statistics on (1) student participation, (2) scientific publication production, and (3) influence of the educational programs on the students’ career.

scholarly journals Guidance and Control of Position and Attitude for Rendezvous and Dock/Berthing with a Noncooperative/Target Spacecraft

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Gilberto Arantes ◽  
Luiz S. Martins-Filho
Keyword(s):  
Linear Quadratic Regulator ◽  
Linear Quadratic ◽  
Proximity Operations ◽  
Guidance And Control ◽  
Navigation And Control ◽  
Out Of Plane ◽  
Tracking Ability ◽  
And Control ◽  
Rendezvous And Docking ◽  
Target Spacecraft

Noncooperative target spacecrafts are those assets in orbit that cannot convey any information about their states (position, attitude, and velocities) or facilitate rendezvous and docking/berthing (RVD/B) process. Designing a guidance, navigation, and control (GNC) module for the chaser in a RVD/B mission with noncooperative target should be inevitably solved for on-orbit servicing technologies. The proximity operations and the guidance for achieving rendezvous problems are addressed in this paper. The out-of-plane maneuvers of proximity operations are explored with distinct subphases, including a chaser far approach in the target’s orbit to the first hold point and a closer approach to the final berthing location. Accordingly, guidance solutions are chosen for each subphase from the standard Hill based Closhessy-Willtshire (CW) solution, elliptical fly-around, and Glideslope algorithms. The control is based on a linear quadratic regulator approach (LQR). At the final berthing location, attitude tracker based on a proportional derivative (PD) form is tested to synchronize the chaser and target attitudes. The paper analyzes the performance of both controllers in terms of the tracking ability and the robustness. Finally, it prescribes any restrictions that may be imposed on the guidance during any subphase which can help to improve the controllers tracking ability.

Guidance, navigation and control for autonomous R-bar proximity operations for geostationary satellites

2016 ◽  
Vol 231 (3) ◽  
pp. 452-473 ◽  
Author(s):  
Changxuan Wen ◽  
Pini Gurfil
Keyword(s):  
Attitude Control ◽  
Sliding Mode ◽  
Vertical Axis ◽  
Mission Design ◽  
Line Of Sight ◽  
Proximity Operations ◽  
Geostationary Satellites ◽  
Navigation And Control ◽  
And Control ◽  
Rendezvous And Docking

R-bar refers to the local vertical axis pointing radially upward in a satellite-fixed reference frame. Approaching a satellite along the R-bar, especially for rendezvous and docking to geostationary satellites, is advantageous in terms of safety considerations and flight time compared to other options. In this paper, a specialized study on autonomous R-bar proximity operations with respect to a geostationary target from a separation of several kilometers to a few hundreds of meters, commonly referred to as the closing phase, is carried out and a comprehensive solution for both attitude and orbit control in this scenario is proposed. An integrative design of the guidance, navigation, and control for R-bar proximity operations is presented. Impulsive R-bar hopping maneuvers are developed for the trajectory guidance. This method is shown to be passively safe and time efficient. The onboard sensors provide measurements of the line-of-sight, range to the target, attitude and angular velocity in the inertial frame. Due to the sensitivity of the sensor’s pointing in the far-range phase, a sliding mode attitude control law is introduced to align the optical axis with the line-of-sight to the target. Sensor measurements are fused and processed by an extended Kalman filter. Simulation results indicate that the proposed integrative guidance, navigation, and control algorithms are robust to uncertainties and noise, and can be used as a comprehensive solution for R-bar rendezvous and docking mission design during the closing phase.

scholarly journals European Proximity Operations Simulator 2.0 (EPOS) - A Robotic-Based Rendezvous and Docking Simulator

2017 ◽  
Vol 3 ◽  
Author(s):  
Heike Benninghoff ◽  
Florian Rems ◽  
Eicke-Alexander Risse ◽  
Christian Mietner
Keyword(s):  
Degrees Of Freedom ◽  
Test Facility ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Proximity Operations ◽  
Linear Slide ◽  
German Aerospace ◽  
And Control ◽  
Real Time Simulations ◽  
Rendezvous And Docking

The European Proximity Operations Simulator (EPOS) 2.0 located at the German Space Operations Center (GSOC) in Oberpfaffenhofen, Germany, is a robotic based test facility of the German Aerospace Center (DLR) used for simulation of rendezvous and docking (RvD) processes. Hardware such as rendezvous sensors (cameras, laser scanners) or docking tools, as well as software (e.g. for navigation and control) can be tested and verified. The facility consists of two robotic manipulators with each six degrees of freedom, a linear slide of 25m length on which one robot can be moved in the laboratory, and a computer-based monitoring and control system. EPOS 2.0 allows for real-time simulations of the rendezvous and docking process during the most critical phase (separation from 25m to 0m) of proximity and docking/berthing operations.

Training managers of professional educational programs for work in the digital environment of the university

2020 ◽  
Vol 8 (2) ◽  
pp. 4 ◽  
Author(s):  
E. K. Samerhanova ◽  
M. A. Balakin
Keyword(s):  
Educational Program ◽  
Educational Programs ◽  
Educational Process ◽  
Digital Environment ◽  
Digital Competence ◽  
Education Management ◽  
Program Managers ◽  
Digital Environments ◽  
Digital Competencies ◽  
The University

Introduction. The article deals with the training of professional educational program managers for work in the digital environment of a university. The digital environment of the university is considered from the perspective of managing professional educational programs and is a complex open system that integrates system components for managing content, process, resources, contingent, finance and quality of programs that ensure the integrity and continuity of the educational process at all levels and in all respects. The implementation of a digital model for managing educational programs at a university on the basis of a single digital ring of services for an electronic platform for managing educational programs at a university dictates the need for digital competencies of managers of major professional educational programs (OPOP).By digital competence of the leaders of professional educational programs we mean the ability and willingness to perform labor functions in the design, implementation and replication of an educational program using digital technologies that ensure the effectiveness of activitiesThe way to identify professional deficiencies in the field of digital competencies of the leaders of professional educational programs was the personalized design of educational internship trajectories with tutorial support for the internship. The internship trajectory of the heads of OPOP has a modular structure and is aimed at eliminating professional deficits in the field of information, methodological, communication, technological and organizational component of digital competencies. The internship site (virtual laboratory) is a virtual educational space that provides training for educational program managers and online events: hackaths, quests, webinars, etc.Materials and methods. When writing an article, the following methods were used - theoretical and methodological analysis and synthesis of available special domestic and foreign scientific and methodological literature, conceptual analysis of scientific articles and publications on the topic; study and generalization of both domestic and foreign developments and implementation of projects to create digital environments in education management; application of generalization, comparison, forecasting methods, online surveys.Results. The structure of the digital environment for managing professional educational programs at the university is presented. Functionally described is the ring of digital services for the management of OPOP. The analysis of different approaches to assessing the digital competencies of educators is presented. The concept of digital competencies has been clarified in relation to the head of a professional educational program. The content of the components of digital competency is described: informational, methodological, communication, technological, organizational.Discussions and Conclusions. The developed modular program for eliminating professional deficits of heads of professional educational programs in the field of digital competencies, based on the personalized design of educational internship trajectories with tutorial support for internships, will allow you to effectively administer and manage BEP in the digital environment of the university.

The Effect of Using Flipped Classroom Model to Improve Iraqi EFL Learners’ Pronunciation in English at University Level

2020 ◽  
Vol 1 (40) ◽  
pp. 631-654
Author(s):  
Khaldoon Waleed Husam Al-Mofti
Keyword(s):  
Language Learning ◽  
Flipped Classroom ◽  
Efl Learners ◽  
English Pronunciation ◽  
Before And After ◽  
Quasi Experimental ◽  
University Level ◽  
The University ◽  
And Control ◽  
Experimental Group

For Iraqi EFL learners who are studying English pronunciation in a traditional instruction method often requires more effort and hard work. Thus, using new methods of teaching such as the flipped classroom model (FCM) is necessary to facilitate learning and improve performance. Hence, this study reports on explanatory research that investigates the effect of using the FCM in the teaching of English pronunciation for Iraqi EFL learners at the university level. The study implemented mixed research methods for data collection in a quasi-experimental analysis. Therefore, two tests were conducted on the assigned groups to measure the effect of the FCM before and after the intervention. Besides, a questionnaire and interviews were used on the experiment group students to collect data about their perceptions of the FCM. The study length (lasted)  was 15 weeks and is comprised of 60 students from the department of English, College of Arts at the University of Anbar. The students were divided into two groups, experimental, and control with 30 students in each group. The findings revealed that there was a significant statistical difference between the two groups in favour of the experimental group with better performance, indicating that the FCM has considerably assisted the Iraqi EFL learners to improve their English pronunciation. Moreover, the students expressed their positive feedback and satisfaction on the use of the FCM in their responses to the questionnaire and the interviews. As such, the current study recommends further research to study the effect of applying the FCM in areas and disciplines other than language learning.

scholarly journals Barriers to Development of an App for Improving Staff-Family Communication at Israeli Geriatric Facilities

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 192-193
Author(s):  
Rinat Cohen ◽  
Gal Maydan ◽  
Shai Brill ◽  
Jiska Cohen-Mansfield
Keyword(s):  
Mobile App ◽  
Institutional Review Boards ◽  
Staff Members ◽  
Institutional Review ◽  
Implementation Planning ◽  
Institutional Adoption ◽  
Communication Needs ◽  
The University ◽  
And Control ◽  
To Receive

Abstract Family caregivers (FCs) of institutionalized noncommunicative older persons reported multiple unmet communication needs focusing on the need to receive reliable and regular updates on the patient’s condition. We have developed a mobile app for improving communication between FCs and healthcare professionals (HPs), based on 152 interviews with FCs and 13 discussion groups with HPs from four Israeli geriatric facilities. Both parties participated in app planning, tailoring it to their needs and abilities. App use implementation encountered major obstacles including the bureaucratic process concerning signing contracts between the university and software development firms, which hindered the process for a full year; data security department required disproportionate security levels that interfered with user experience and delayed the development process; the study’s definition varied across different ethics/Helsinki committees (Institutional Review Boards; IRBs), which led to different demands, e.g., insurance for medical clinical trials although no drugs or medical device were involved; lack of cooperation by mid-level staff members despite the institutional adoption of the app project; low utilization by HPs resulted in FCs not receiving timely responses. Despite these and other obstacles, we tested app use for 15 months in one facility in a pre-post-design with intervention and control groups, and we have since begun testing it in another facility. FCs who had used the app had positive feedback and wished to continue using it. App use optimization requires implementation planning, assimilating changes in each facility’s work procedures and HP’s engagement and motivation and thus depends on institutional procedures and politics.

scholarly journals An Analytical Perspective of the Reliability of Multi-Evaluation in Higher Education

Mathematics ◽  
2021 ◽  
Vol 9 (11) ◽  
pp. 1223
Author(s):  
Antonio Rodríguez Fuentes ◽  
José Luis Gallego Ortega
Keyword(s):  
Selection Process ◽  
Self Assessment ◽  
Statistical Software ◽  
Self Evaluation ◽  
Participant Selection ◽  
Analytical Perspective ◽  
Second Year ◽  
The University ◽  
And Control ◽  
And Training

It is urgent to evaluate the rest of the renewed elements within the university didactic action, overcoming the hegemony of traditional methods in which the professor constitutes as the sole evaluator. If autonomous and cooperative group-based learning is encouraged, self-assessment and co-assessment must also be promoted, apart from the traditional lecturing and evaluation by others. The assessing competence of Teacher Training degree students (n = 175) was researched, started with stratified sampling (in the second and fourth years), following a participant selection process in each group. The compiled data were subject to descriptive, inferential, and correlation analysis by means of statistical software. The results pointed to low execution levels as for the self-evaluation (individual and group), although a certain progress was identified in the four year students compared to those in their second year of study. A better execution in evaluation was observed in all students regarding co-assessment (among different work groups in the classroom) and assessment by others (towards the professor). The use of all types of assessment is proposed, having a certain awareness and training regarding self-evaluation, and counting with a full supervision and control over it. All in all, the advantages of multiple and democratic assessment surpass the drawbacks derived from them.

Abstract P186: A Randomized Preschool Trial To Promote Cardiovascular Health In Colombia: 18 Month Follow Up.

Circulation ◽  
2012 ◽  
Vol 125 (suppl_10) ◽  
Author(s):  
Jaime Céspedes ◽  
German Briceño ◽  
Michael Farkouh ◽  
Rajesh Vedanthan ◽  
Martha Leal ◽  
...  
Keyword(s):  
Educational Intervention ◽  
Cardiovascular Health ◽  
Controlled Trial ◽  
Intervention Group ◽  
Educational Programs ◽  
Control Group ◽  
Active Lifestyle ◽  
And Control ◽  
The Impact

Introduction: Educational programs for children can increase uptake of healthy lifestyle behaviors. However, the impact of educational programs in preschool-aged children in low- and middle-income countries is not known. We conducted a five month educational intervention in preschool facilities (PF) in Bogota, Colombia, to assess changes in preschooler’s knowledge, attitudes and habits (KAH) towards healthy eating and living an active lifestyle. Methods: We conducted a cluster, randomized, controlled trial, and randomly assigned 14 PF in Bogota to a five-month educational intervention (7 PF) or to usual curriculum (7 PF). The intervention included classroom activities and use of printed material and videos. A total of 1216 pre-school children, 928 parents, and 120 teachers participated. A structured survey was used to evaluate changes in KAH with a weighted total score (WTS). The primary outcome was change in children's WTS, and the secondary outcomes were change in parents’ and teachers' WTS. The control PF were provided the intervention after the initial evaluation. To assess sustainability, we evaluated both intervention and control groups at 18 months. Results: At 6 months, children in the intervention group showed 10.9% increase in WTS vs. 5.3% in controls, p<0.001, after adjustment for cluster, sex, age and teachers' educational level. Among parents, the equivalent results were 8.9% and 3.1%, respectively, p< 0.001, and among teachers 9.4% and 2.5%, p=0.06. At the 18-month extended follow-up, both the intervention and control children showed a significant further increase in WTS, p<0.001 (Figure 1). In parents and teachers in the intervened group, there was no significant increase in WTS, p=0.7417, and p=0.1197. In the control group, there was an increase in WTS in teachers but not in parents, p=0.001, and p=0.4239. Conclusion: A preschool based intervention, aimed at changing KAH related to healthy diet and active lifestyle, is feasible, efficacious and sustainable up to 18 months in very young children in Colombia.

On regulation of upbringing activity in organizations of professional education

2021 ◽  
pp. 42-49
Author(s):  
V.P. Soloviev ◽  
◽  
T.A. Pereskokova ◽  
Keyword(s):  
Vocational Education ◽  
Russian Federation ◽  
Professional Education ◽  
Educational Programs ◽  
Educational Organization ◽  
The Russian Federation ◽  
The Law ◽  
The University

Discussed is the problem of upbringing activities in the system of vocational education. In recent years this problem has not received much attention. To correct this situation, in July 2020 amendments were made to the law “On Education in the Russian Federation” about the problem of upbringing of students. Approved that it is necessary to include a working program of upbringing of students in educational programs. It is proposed that at the beginning the educational organization should develop a generalized program of upbringing of students and a calendar plan of upbringing activities. A variant of the program of upbringing of students at the university is given.

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