Miracle-dz/UniFAR-FTUs huggingface dataset:
Teacher training in Mathematics Fairs: an opportunity to reflect on the advising process

Throughout the development of the educational product linked to Schroeder (2021), it was possible to move between the three pedagogical moments. In them, the different facets of the Network Movement of the Mathematics were discussed, however, the focus was on the advising process and its contributions to the training of teachers. At the end, interviews were carried out with the participants. The questions are organized into four blocks. Later, the responses were subjected to a Discursive Textual Analysis (DTA), which allowed to identify contributions before, during and after participating in the event. Regarding the experiences before, the epistemological conceptions of the advisers were evidenced. At the time of the event, pedagogical contributions were perceived for the work in the classroom. After the event, contributions related to the registration of activities and evaluation of the work for the following years were perceived.
Combination of Analytic Hierarchy Process (AHP) Method and Profile Matching Method with Matrix Decomposition in Determining Olympiad Candidates

One of the government's programs in improving the quality of human resources is by organizing the selection of candidates for the Olympics which aims to improve general knowledge. To be able to take part in the selection of prospective participants for the Olympics, the participants have general knowledge, achievements, behavior and experience in following closely at the high school level.There are several problems in the selection of students at the school level, including teachers or principals in selecting students only based on the value of the lessons obtained, even though the Olympics are held at the district, provincial and national levels, other factors are needed including knowledge, achievement and experience in participating in the competition. previous olympics so the results were not optimal.Therefore, it is necessary to design a decision support system using the AHP (Analytical Hierarchy Process) and Profile Matching methods which are expected to assist decision makers in obtaining information for selecting the right students to participate in the Olympics.After testing and analysis involving manual calculations, it can be seen that the results obtained from system calculations are the same as manual calculations. So that this system can be used to help schools or teachers to select students in participating in the Olympics at the High School (SMA) level.
Biomechanics of Gait in the Elderly: A Literature Review

Context: Aging is associated with extensive changes in physiological and biomechanical factors, such as reduction of muscle function. Identifying and controlling the negative effects caused by these changes can help improve the quality of life of the elderly and reduce treatment costs. The objective of this research is to investigate the biomechanical changes of gates among elderly people. Methods: All full-text articles with the keywords including elderly and walking, gait, aging, and geriatrics were considered. Data collection was done using a "Data Extraction Form" which was designed based on the purpose of the research. Articles were searched in reliable databases such as Mendeley PubMed, Science Direct, PubMed, Scopus, Google Scholar SpringerLink, and SID by searching keywords. At first, 1985 articles regarding biomechanical parameters of walking were found. Finally, 12 articles were directly related to the topic. Results: The results of our studies showed that changes would occur in both kinetics and walking kinematics in old age due to the lack of neuromuscular and skeletal capacity and weakness in aspects of balance, coordination, and posture control. The elderly tend to perform compensatory strategies and altered movement patterns in gait, which lead to some changes in kinematic and kinetic characteristics. Conclusions: Prevention, reduction, and treatment of movement disorders require timely diagnosis. Therefore, researches in the area of walking the elderly and assessing their risk of falling, and understanding how much age-related decline can be tolerated before creating movement restrictions are key factors.
Seroprevalence of Human T-cell Lymphotrophic Virus Types I/II (HTLV-I/II) among Blood Donors in a Tertiary Hospital in Oman

Objectives : Routine blood donor screening of Human T-cell Lymphotropic Virus (HTLV) has been practiced in Oman since 2017. There is limited data on HTLV seroprevalence among Omanis. This study aims to determine the seroprevalence for HTLV-I/II among blood donors attending a hospital-based blood bank to assess the need for a universal versus targeted screening. Methods : A retrospective review of blood donors’ results attending a hospital blood bank between January 2017 and February 2020 was performed. Blood samples were screened for HTLV-I/II antibodies using ARCHITECT i2000SR. Reactive samples were further tested by immunoblot assay (MP Diagnostics HTLV Blot 2.4). Age, gender and nationality were assessed. All components manufactured at the blood bank are leukoreduced pre-storage. Results : A total 24,469 first-time blood donors were screened for HTLV antibodies. Most of the participants were male (n=22,186, 90.7%), and the majority were Omani (n=22,711, 92.8%). The age range was between 18 to 64 years with a median of 32 years. The seroreactivity rate was 0.176% (43/24,469) (95% CI: 0.12-0.23%). Confirmatory testing by immunoblot revealed 3 indeterminate results (7%), of which 2 were Omani and 1 non-Omani donors, and the remaining 40 sero-reactive donors tested negative. Conclusions: Our study revealed zero seroprevalence of confirmed HTLV among blood donors. The continuation of universal screening of first-time donors is a standard of care. In the presence of universal leukoreduction at SQUH and very low risk of HTLV in Oman’s population, the need for screening regular donors can be re-considered if these findings were confirmed on a larger scale involving other blood banks in Oman.
Neural network-based asymptotic tracking control of unknown nonlinear systems with continuous control command

ABSTRACT This paper proposes a robust tracking controller for a class of nonlinear second-order systems with time-varying uncertainties. The controller is mainly based on the robust integral of the sign of the error (RISE) control approach to achieve an asymptotic stability result with a continuous control command in the presence of additive uncertainties. An adaptive feedforward neural network control term is blended with a new RISE controller to improve the system's transient performance. The proposed RISE controller is a modified version of the existing saturated RISE controller such that only sign of the derivative of the output is needed. The stability of the closed-loop system is well studied, where a local asymptotic stability is proven. The controller performance is validated through simulations on a two-degree-of-freedom lower limb robotic exoskeleton.
Discovering overlapping communities using a new diffusion approach based on core expanding and local depth traveling in social networks

This paper proposes a local diffusion-based approach to find overlapping communities in social networks based on label expansion using local depth first search and social influence information of nodes, called the LDLF algorithm. It is vital to start the diffusion process in local depth, traveling from specific core nodes based on their local topological features and strategic position for spreading community labels. Correspondingly, to avoid assigning excessive and unessential labels, the LDLF algorithm prudently removes redundant and less frequent labels for nodes with multiple labels. Finally, the proposed method finalizes the node's label based on the Hub Depressed index. Thanks to requiring only two iterations for label updating, the proposed LDLF algorithm runs in low time complexity while eliminating random behavior and achieving acceptable accuracy in finding overlapping communities for large-scale networks. The experiments on benchmark networks prove the effectiveness of the LDLF method compared to state-of-the-art approaches.
Mayer's Formula for Black Hole Thermodynamics in Constant Magnetic Field

Using the concepts of the classical thermodynamics, we calculated in this work, the thermodynamic potential of black holes in the presence of a constant externel magnetic field present in the surrounding black hole. This calculation takes into account the developments previously provided by (Hawking, Bekenstein, Davies and Straumann) on the equations governing the dynamics of black holes,with an arbitrary value of the surface gravity k. Like the four classical thermodynamic Maxwell equations, we have developed, for black holes, new twenty four fundamental equations. Among these equations, particular attention was given to the calculation of specific heats CΩ,Φ,M and CJ,Q,B and the Mayer formula for a black hole in the presence of magnetic field.
Action recognition using multi-scale histograms of oriented gradients based depth motion trail Images

In this paper, we propose a novel approach based on Depth Maps and compute Multi-Scale Histograms of Oriented Gradient (MSHOG) from sequences of depth maps to recognize actions. Each depth frame in a depth video sequence is projected onto three orthogonal Cartesian planes. Under each projection view, the absolute difference between two consecutive projected maps is accumulated through a depth video sequence to form a Depth Map, which is called Depth Motion Trail Images (DMTI). The MSHOG is then computed from the Depth Maps for the representation of an action. In addition, we apply L2-Regularized Collaborative Representation (L2-CRC) to classify actions. We evaluate the proposed approach on MSR Action3D dataset and MSRGesture3D dataset. Promising experimental result demonstrates the effectiveness of our proposed method.
Business Data Collection: Toward Electronic Data Interchange. Experiences in Portugal, Canada, Sweden, and the Netherlands with EDI

Abstract This article discusses the experience and the ideas of National Statistical Institutes from four countries – Portugal, Sweden, Canada, and the Netherlands – in order to build a fully automated data collection system, to provide a system-to-system (S2S) data exchange or Electronic Data Interchange (EDI) between all stakeholders in the production chain. This joint work is a summary of an invited session at the Fifth International Conference on Establishment Surveys, which was devoted to ‘the future of business data collection’. Taken together, the four presentations provide an overview of recent experiences with S2S/EDI data collection for financial business data. The basis for such a system is an integrated unbroken digital information chain that runs from the recording of financial data in computerised administrative systems of individual businesses all the way to publishing economic statistics – the Business Information Chain. This chain can be ‘closed’ and made into a cycle by including a feedback loop, for example by providing benchmark data to businesses. However, to make it happen, technical standardisation, vertical and horizontal conceptual harmonisation between all partners in the chain, and positive business cases for all partners are needed. The article starts by putting EDI developments in historical perspective.
A three‐stage p‐median based exact method for the optimal diversity management problem

The optimal diversity management problem (ODMP) arises in many application fields when a company, producing a good and/or a service customizable with options, has to satisfy many different client demands with various subset of options, but only a limited number of option combinations can be produced. ODMP can be represented by a disconnected network and formulated as a large‐scale p ‐median problem (PMP). In this article we improve a known decomposition approach where smaller PMPs, related to the network components, can be solved instead of the initial large problem. The proposed method is structured in three stages and it combines Lagrangian relaxation‐based techniques, variable fixing and reduction tests, and a dynamic programming algorithm. It drastically reduces the number and the dimensions of the p ‐median subproblems to be solved to optimality by a MIP solver and to be combined to determine the optimal solution of the original PMP by a multiple choice knapsack problem. A sequential and a parallel implementation of the method are provided and tested. Obtained results on known and new test instances show that our approach considerably outperforms state‐of‐the‐art algorithms for large‐scale ODMPs.
Monte Carlo modelling of photon transport using Heterogeneous Computing

In this work the use of the OpenCL framework to implement the parallel processing of the Monte Carlo (MC) simulation of the transport of photons on matter is presented. Our platform, named OCL_MC, relies on the physical model for photons implemented in EGSnrc and adapts it for execution across heterogeneous platforms consisting of central processing units (CPUs) and graphics processing units (GPUs). Runtime and accuracy of OCL_MC was tested against a selection of phantoms and several photon beams in the kV range, using different heterogeneous platforms. We could demonstrate that the dose distributions calculated with OCL_MC are in good agreement with EGSnrc. Our implementation scales very well across the different processors available in the studied heterogeneous platforms. Therefore, OCL_MC is capable to exploit all available processing resources inside modern computing systems without sacrificing the accuracy and reliability of the MC method.
East African Journal of Education Studies

Communication is the nervous system of an organisation, and its success depends very much upon the coordinated efforts of people working at different levels to achieve a common goal. Conflict, on the other hand, is an expression of hostility, antagonism and misunderstanding between the staff members. Most of these conflicts occur in secondary schools, middle-level colleges
Teaching Culture of Others through English Literature

The diversity of the culture in the world is a given thing. Billions of people from different countries in the world have produced varieties of civilizations, ways of life, lifestyle, custom, heritage, habits, values, and traditions. It is hypothesized understanding the culture of different people can be valuable to the student’s character building. The comprehension of multicultural can be modality to be more aware of cultural dissimilarities. They can respect any variance of people whose backgrounds, minds, opinion and may behave in ways that are not the same. Besides, the possession of rich knowledge of diverse cultures can bridge them to take interpersonal communication in friendly ways. Nonfiction kinds of literature, science books as well as historical books are not the only sources to study multicultural. Doing literature reading comprehension is another method to open the horizon of the existing variability of culture. The paper presents descriptively the teaching experience of how the students of the University in Tulungagung, Indonesia got to practice learning the culture of people in different areas of the world through extensive reading. The teaching materials cope with the introduction of the theory of literature, how are the cultures told by the author, and why is it important to comprehend literature? How multicultural literacy has inspired the students 'live performance. The teaching goal aims to let the students learn something good or positive about the culture of people of others delivered by the writers of poems, novels, and drama. The broader insights of life experiences, religion, beliefs, and customs of other people can bridge the friendship of ethnicity, race, and social status across the world. Being not a closed mind human beings can appreciate or respect others, avoid underestimating, bullying, any violence, and being the right, the best, and the richest person.
Robust Statistics for Signal Processing

K-distribution, 103, 121–123 M-estimator, 1, 5, 10–12, 19, 21, 23, 27, 46, 48, 53, 54, 61–63, 67, 100, 110–113, 117, 118, 120, 121, 140, 141, 157, 162, 167, 183, 197, 206, 214, 229, 249, 260 ARMA model, 196 Huber’s, 11, 12, 14, 16, 17, 22, 23, 26, 27, 50, 51, 53, 54, 68, 71, 92, 114–116, 121, 157, 167, 183, 259 linear regression, 54 linear regression model, 49 location, 12, 22 monotone, 11, 12, 17, 71 redescending, 10–12, 71 scale, 10, 13 scatter matrix, 110 scatter matrix (regularized), 118 Tukey’s, 11, 12, 14, 16, 17, 34, 49–51, 71, 157, 167, 259 Tyler’s, 116, 117, 121, 123, 141 Tyler’s regularized, 119 MM-estimator, 64, 67, 100, 198, 199, 214, 240, 242, 249, 251, 252 ARMA model, 198 linear regression model, 67 S-estimator, 64, 66, 71, 197–199, 211, 214, 249, 252, 259 ARMA model, 197 linear regression model, 66 α-stable distribution, 136, 144 α-trimmed mean, 19, 21, 26 l1-loss, 36, 50, 97 τ -estimator, 64, 66, 67, 205, 206, 259, 268 ARMA model, 198 ε-contamination model, 20, 25, 26, 50, 166, 174, 181, 242 ε-neighborhood, 21, 26
Effects of wave potential on electron holes in thermal and superthermal space plasmas

Observations from various interplanetary and other spacecraft missions evince that superthermal distributions are omnipresent in the solar wind and near Earth's plasma environment. These observations confirm the presence of coherent bipolar electric field pulses. In phase space, these electric field structures are observed as electron holes (EHs) or ion holes. Trapping of particles in a potential well causes the formation of such structures and is generally studied using the Bernstein-Greene-Kruskal approach. The literature on these structures encompasses the trapped electron distribution function and physically plausible regions. In this paper, we focus on the effects of the width and amplitude of wave potential on electron trapping in thermal and superthermal plasmas. It can be observed that both an increase in the width and the amplitude of wave potential cause an augmentation in the trapping of particles. The amplitude plays a dominant role in the trapping of maximum energetic particles, whereas the width plays a role in deciding the density of particles at the center of the EHs. We found that there exists an upper limit for the stability region of EHs defined by the width-amplitude relation. Additionally, it is noticed that the superthermal plasma does not impose restriction on the presence of electron holes with a width less than the electron Debye length.Observations from various interplanetary and other spacecraft missions evince that superthermal distributions are omnipresent in the solar wind and near Earth's plasma environment. These observations confirm the presence of coherent bipolar electric field pulses. In phase space, these electric field structures are observed as electron holes (EHs) or ion holes. Trapping of particles in a potential well causes the formation of such structures and is generally studied using the Bernstein-Greene-Kruskal approach. The literature on these structures encompasses the trapped electron distribution function and physically plausible regions. In this paper, we focus on the effects of the width and amplitude of wave potential on electron trapping in thermal and superthermal plasmas. It can be observed that both an increase in the width and the amplitude of wave potential cause an augmentation in the trapping of particles. The amplitude plays a dominant role in the trapping of maximum energetic particles, whereas the w.
SIMULTANEOUS ANALYSIS OF THE FEASIBILITY AND PRIORITY OF TOURIST ATTRACTIONS: A CASE STUDY OF ECOTOURISM DEVELOPMENT IN TANAH LAUT REGENCY, INDONESIA

Ecotourism is vital in reducing negative environmental impacts and helping sustainable development. Developing ecotourism destinations require comprehensive studies, including the feasibility and priority of the tourist attractions. Many studies concentrate on ecotourism development; however, only a few reports deal with feasibility and priority, particularly biodiversity. Tanah Laut, a regency in the southeast part of Borneo Island has excellent ecotourism potential. This study aims to assess the feasibility and priority of seven ecotourism attractions through simultaneous methods consisting of the Analysis of Natural Tourist Attractions (ANTA) and the Exponential Comparison Method (ECM) for their feasibility and priority, consecutively. 10 criteria were involved in the ECM analysis: Natural and environment, human resources, market potential, transportation and communication, infrastructure, institutional support, security, tourism support, social and culture, and physical condition. The ANTA analysis showed that the seven ecotourism attractions in Tanah Laut Regency satisfy the minimum feasibility criteria to be developed as ecotourism objects. Furthermore, Mount Birah was elected the most priority due to its natural, human resources and market potential. This study suggests that simultaneous methods of ANTA and ECM could be used as adequate tools in a decision-support system for ecotourism development.
Power system stabilization using an optimal hybrid control strategy with a PID controller

ABSTRACT As a power system turns out to be all the more heavily loaded and more unpredictable, maintaining stability becomes a difficult issue. In this paper, we propose an optimal control procedure for power system adjustment utilizing a proportional-integral-derivative (PID) controller in a coordinated power system. In modern applications, the most generally utilized controller is the PID controller, which necessitates productive techniques to control the distinctive parameters of the plant. The proposed strategy uses the particle swarm optimization algorithm-based way to deal with producing the optimal tuning parameters. This paper investigates the execution of the power system and dynamic execution of the controller is compared with the conventional controller with approval of the adequacy of the proposed mixture controller. Experimental results demonstrate that the proposed system has upgraded the system stability of the power system all the more adequately existing systems.
Harnessing Multiple Internal Reflections to Design Highly Absorptive Acoustic Metasurfaces

The rapid development of metasurfaces has enabled numerous intriguing applications with acoustically thin sheets. Herewe report the theory and experimental realization of a nonresonant sound-absorbing strategy usingmetasurfaces by harnessingmultiple internal reflections.We theoretically and numerically show that the higher-order diffraction of thin gradient-index metasurfaces is tied to multiple internal reflections inside the unit cells. Highly absorbing acoustic metasurfaces can be realized by enforcing multiple internal reflections togetherwith a small amount of loss.A reflective gradient-index acousticmetasurface is designed based on the theory, and we further experimentally verify the performance using a three-dimensional printed prototype. Measurements show over 99% energy absorption at the peak frequency and a 95% energy absorption bandwidth of around 600 Hz. The proposed mechanism provides an alternative route for sound absorption without the necessity of high absorption of the individual unit cells.