scholarly journals Study of The Lazy Nature of Physics Students Using The Quadratic Optimal Control Method

2020 ◽  
Vol 6 (2) ◽  
pp. 279-288
Author(s):  
Dimas Kukuh Nur Rachim
Keyword(s):  
Teaching And Learning ◽  
Control Method ◽  
Coefficient Matrix ◽  
Learning Activities ◽  
Vector System ◽  
Discrete Time System ◽  
Time System ◽  
Physics Students ◽  
Optimal Control Method ◽  
Quadratic Optimal Control

The lazy nature of learning is an obstacle in teaching and learning activities. The higher level of laziness will reduce the students learning achievement. This problem has motivated the author to make a mathematical model of student learning's lazy nature and analyze it. The lazy nature of learning is modeled to a discrete-time system with , denotes a state vector of the lazy nature, represents an input vector system in time,    and denotes a coefficient matrix of and . The optimal quadratic control method is applied in the model to analyze the system's stability and give the interpretation of the model based on the graphics info obtained during the simulation process. The feedback controller  is obtained as a result of optimizing the quadratic objective function. a feedback controller's existence makes the lazy nature of learning physics students decrease from time to time, and the system becomes stable.

scholarly journals Dynamical Analysis of a New Chaotic Fractional Discrete-Time System and Its Control

Entropy ◽  
2020 ◽  
Vol 22 (12) ◽  
pp. 1344
Author(s):  
A. Othman Almatroud ◽  
Amina-Aicha Khennaoui ◽  
Adel Ouannas ◽  
Giuseppe Grassi ◽  
M. Mossa Al-sawalha ◽  
...  
Keyword(s):  
Discrete Time ◽  
Software Package ◽  
Control Method ◽  
Approximate Entropy ◽  
Dynamical Analysis ◽  
Largest Lyapunov Exponent ◽  
Bifurcation Diagrams ◽  
Discrete Time System ◽  
Time System ◽  
Quadratic Nonlinearities

This article proposes a new fractional-order discrete-time chaotic system, without equilibria, included two quadratic nonlinearities terms. The dynamics of this system were experimentally investigated via bifurcation diagrams and largest Lyapunov exponent. Besides, some chaotic tests such as the 0–1 test and approximate entropy (ApEn) were included to detect the performance of our numerical results. Furthermore, a valid control method of stabilization is introduced to regulate the proposed system in such a way as to force all its states to adaptively tend toward the equilibrium point at zero. All theoretical findings in this work have been verified numerically using MATLAB software package.

A Multimode Controller Design for a TBM Autopilot with Optimal/Classical Approach

2012 ◽  
Vol 466-467 ◽  
pp. 920-924
Author(s):  
Li Li ◽  
Guo Qing Huang ◽  
Ming Xiang Yang ◽  
Min Yu
Keyword(s):  
Optimal Control ◽  
Control Method ◽  
Controller Design ◽  
Coefficient Matrix ◽  
Gain Coefficient ◽  
Frequency Domain Analysis ◽  
Structure Design ◽  
System Structure ◽  
Weighting Coefficient ◽  
Optimal Control Method

This paper introduces design of a multimode controller for a Tactical Ballistic Missile autopilot that combined optimal control method with classical frequency domain analysis. In the paper, optimal control method is used to system structure design and to determine gain coefficient, frequency constraints in classical control theory are used to limit the weighting coefficient matrix of objective function in order to ensure system robustness. The simulation results show that the corresponding system responses have better quickness and some robustness, but the overshoot becomes a bit larger with contrast to traditional method.

Development of Pascal Principle Activities Using The Stem Approach and Undergraduate Physics Students’ Perception Towards The Activities

2021 ◽  
Vol 14 (1) ◽  
pp. 01
Author(s):  
Nawwar Raihan Alias ◽  
Nurulhuda Abd Rahman
Keyword(s):  
Content Validity ◽  
Teaching And Learning ◽  
Response Rate ◽  
Evaluation Model ◽  
Learning Activities ◽  
Language Design ◽  
Design Development ◽  
Physics Students ◽  
The Public ◽  
Analysis Design

The aim of this study was to develop Pascal Principle teaching and learning activities using the STEM approach and to determine the content validity and undergraduate Physics students’ perception of the activities. This study was a developmental research using ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model to develop the activities. The population was 135 physics undergraduates in their fifth and seventh semester of study from one of the public universities in Malaysia. Data was collected using a questionnaire that was adapted from a standardised instrument and that was distributed using Google Form to the population together with a link to the activities. The response rate was 29.6% (40 respondents). Perception data were analysed descriptively using percentage for content, language, design, and interest. Result shows that the experts were 95.5% in agreement about the content validity of the activities. For the perception data, 98.5%, 99.5%, and 99.0% students have positive perceptions towards the content, language, and design, respectively. In addition, 96.3% show interest in the activities. In conclusion, the research succeeded in developing validated teaching and learning activities that use the STEM approach and that were perceived positively by physics undergraduates. The materials for the activities can thus be used as a teaching and learning resource in the classroom.

scholarly journals PENGGUNAAN MODEL INKUIRI TERBIMBING BERBASIS MULTI MEDIA UNTUK MENINGKATKAN AKTIVITAS DAN PRESTASI BELAJAR FISIKA SISWA KELAS X MIPA-2 MAN 15 JAKARTA

2020 ◽  
Vol 1 (1) ◽  
pp. 102-109
Author(s):  
Intan Irawati
Keyword(s):  
Teaching And Learning ◽  
Action Observation ◽  
Inquiry Learning ◽  
Learning Activities ◽  
Average Score ◽  
Guided Inquiry ◽  
Physics Students ◽  
Multi Media ◽  
Scientific Terms ◽  
Planning Action

The research objectives are to increase of the activity of and physics’ accomplishments of students in grade X Science-2 by guided inquiry learning based multimedia. The research was being conducted in the second semester of 2016-2017. Research method that was used is Classroom Action Research (CAR) that was undertaken in two cycles and two sessions in every cycle. Each cycle consisting of the stages planning, action, observation and relection. The research instruments were to identify students observation in the groups, sheets of observation of students in the teaching and learning activities, sheets of of the observation of the activity of the teacher in the teaching and learning activities, and the instrument of the physics test of a momentum and impulses . Learning physics by guided inquiry learning based multimedia had increased the activity of students in teaching and learning activities of the average score 71.8 to 85. Students became more active in noting a lesson, analyzed problems, to act critical and argue in scientific terms. The application of guided inquiry learning based multimedia had improved the ability of achievements physics students from the average score 71,7 to 84 on first cycle and be 93 in second cycle.

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