34 research outputs found

    Risk Control for Synchronizing a New Economic Model

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    Risk analysis in control problems is a critical but often overlooked issue in this research area. The main goal of this analysis is to assess the reliability of designed controllers and their impact on applied systems. The chaotic behavior of fractional-order economical systems has been extensively investigated in previous studies, leading to advancements in such systems. However, this chaotic behavior poses unpredictable risks to the economic system. This paper specifically investigates the reliability and risk analysis of chaotic fractional-order systems synchronization. Furthermore, we present a technique as a new mechanism to evaluate controller performance in the presence of obvious effects. Through a series of simulation studies, the reliability and risk associated with the proposed controllers are illustrated. Ultimately, we show that the suggested technique effectively reduces the risks associated with designed controllers

    An Efficient Object-Oriented Exploration Algorithm for Unmanned Aerial Vehicles

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    Autonomous exploration of unknown environments usually focuses on maximizing the volumetric exploration of the surroundings. Object-oriented exploration, on the other hand, tries to minimize the time spent on the localization of some given objects of interest. While the former problem equally considers map growths in any free direction, the latter fosters exploration towards objects of interest partially seen and not yet accurately identified. The proposed work relates to a novel algorithm that focuses on an object-oriented exploration of unknown environments for aerial robots, able to generate volumetric representations of surroundings, semantically enhanced by labels for each object of interest. As a case study, this method is applied both in a simulated environment and in real-life experiments on a small aerial platform

    Pengurusan disiplin murid di sekolah kawasan bandar dan luar bandar: perspektif pemimpin sekolah

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    Although the low achievement of a school discipline associated with students’ misconduct, there is a high correlation between good school discipline and student achievement. Therefore, this study aims to identify the effectiveness and differences of school discipline management in urban and rural areas. A quantitative survey method was applied and questionnaire was distributed to the total of 80 school leaders that included 47 from urban and 33 from rural areas in selected schools in Malaysia. Data were analyzed using descriptive statistic including percentage, mean, and standard deviation, and inferential statistic for Mann-Whitney U test. The study found that the effectiveness of managing students’ discipline in both rural and urban schools is high and shows satisfactory when the mean score is 4.00 and standard deviations is 0.79. Furthermore, the results show that that there is no significant differences between urban and rural schools in managing the students’ discipline at p>0.05. In addition, this study found that the importance of the school factors especially school leaders in managing the students’ discipline systematically involving planning, organizing, leading and controlling

    Utilizing Fractional Artificial Neural Networks for Modeling Cancer Cell Behavior

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    In this paper, a novel approach involving a fractional recurrent neural network (RNN) is proposed to achieve the observer-based synchronization of a cancer cell model. According to the properties of recurrent neural networks, our proposed framework serves as a predictive method for the behavior of fractional-order chaotic cancer systems with uncertain orders. Through a stability analysis of weight updating laws, we design a fractional-order Nonlinear Autoregressive with Exogenous Inputs (NARX) network, in which its learning algorithm demonstrates admissible and faster convergence. The main contribution of this paper lies in the development of a fractional neural observer for the fractional-order cancer systems, which is robust in the presence of uncertain orders. The proposed fractional-order model for cancer can capture complex and nonlinear behaviors more accurately than traditional integer-order models. This improved accuracy can provide a more realistic representation of cancer dynamics. Simulation results are presented to demonstrate the effectiveness of the proposed method, where mean square errors of synchronization by applying integer and fractional weight matrix laws are calculated. The density of tumor cell, density of healthy host cell and density of effector immune cell errors for the observer-based synchronization of fractional-order (OSFO) cancer system are less than 0.0.0048, 0.0062 and 0.0068, respectively. Comparative tables are provided to validate the improved accuracy achieved by the proposed framework

    Factors affecting strategic instructional leadership practices of school principals: Teachers’ perception

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    Instructional leadership is an important aspect of school principals. The roles of instructional leader in an educational organization are setting clear goals, managing curriculum, monitoring lesson plans, allocating resources and evaluating teachers regularly to promote student learning and growth. To improve the quality of an educational organization, an instructional leader should play his /her role and responsibility efficiently and effectively. The main purpose of this study was to identify the factors affecting instructional leadership practices of school principals. A quantitative method was used to collect the data. Accordingly, survey questionnaire was used as the main instrument to collect the data from the Youth Skills Training Institution randomly. The sample consisted of 100 teachers who are currently teaching technical and non-technical subjects in the training institution. Four domains were used as factors affecting the instructional practices, which are professional leadership, shared mission and clear goals, continued monitor of teacher progress and professional growth of the teachers. Findings shows that the four domain factors were really affect the instructional leadership practices. The findings of this study can be beneficial for policy and decision makers in the Ministry of Education, school management and administration as well as teachers
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