Swafoto Kelompok Sebagai Task Design Permutasi pada Pembelajaran Jarak Jauh

Task design atau desain tugas merupakan komponen penting dalam mendorong terjadinya proses belajar matematika. Tujuan penelitian ini adalah untuk menyusun task design pembelajaran topik permutasi. Penelitian ini melibatkan 80 siswa Sekolah Menengah Atas di Ngabang, Kalimantan Barat pada tanggal 1 Januari sampai 5 Maret 2021. Penelitian ini menggunakan metodologi didactic engineering yang terdiri dari empat tahap yaitu 1) preliminary analysis, (2) design and a priori analysis, (3) implementation, observation, and data collection, dan (4) a posteriori analysis. Task design disusun dengan menggunakan kerangka Teori Situasi Didaktis. Pada setiap tahap, khususnya tahap keempat, data dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa untuk materi permutasi dapat dibuat task design berupa swafoto kelompok. Swafoto kelompok merupakan fundamental situation dalam task design yang dikonstruksi dengan kerangka Teori Situasi Didaktis dan sesuai dengan konteks siswa. Task design ini juga mampu mendorong siswa mengkonstruksi pengetahuannya melalui permasalahan swafoto kelompok. Dalam konteks pembelajaran jarak jauh, pada masa pandemi ini, swafoto kelompok merupakan bentuk task design yang kontekstual dan mendorong siswa terlibat aktif karena sifatnya personal. Hasil penelitian ini juga menunjukkan potensi dan penggunaan Teori Situasi Didaktis sebagai kerangka task design pada topik permutasi di Sekolah Menengah Atas.

A PRIORI ANALYSIS OF RADIATION RESISTANCE OF MULTICHANNEL LOW-NOISE KU-BAND AMPLIFIER

Приводится алгоритм расчета накопленной дозы радиационного излучения для унифицированной конструкции бортовой аппаратуры систем спутниковой связи The article presents an algorithm for calculating the accumulated radiation dose for the unified design of onboard equipment of satellite communication systems.

Analysis and Modelling of the Commutation Error

A multiscale dynamic analysis of the commutation error, based on the filtering approach is performed. The similarity multiscale hypothesis proposed by Bardina (1983) and extended by Geurts and Holm (2006) to the commutation error is examined in detail and an extension of the Germano identity to the analysis and the modelling of the commutation error is proposed. For a detailed analysis under controlled condition the method is first applied to synthetic turbulence and subsequently to the a-priori analysis of a turbulent channel flow at Reτ=590. The results illustrate the flexibility of the dynamic modelling approach. Combined with a scale similarity assumption for the commutation error very satisfactory results have been obtained for first order derivatives and reasonable results for second order derivatives. In all cases the modelling of the commutation error resulted in smaller errors than the error obtained by neglecting the commutation error.

The Articulation of Didactic Engineering with the Didactic Situations Theory: Examples of Applications to the Study of Integer Sequences

According to the guidelines of the Didactic Engineering as a research methodology and in complementarity with the Didactic Situations Theory, we will show how Didactic Engineering and the Didactic Situations Theory can be articulated to study integer sequences. We will present two examples of applications of this articulation between Didactic Engineering and the Didactic Situations Theory to the study of numerical sequences and it is our intention to describe the main elements of two initial stages of Didactic Engineering, namely, Preliminary Analysis and Design and a priori Analysis. We will highlight the conception of didactic situations and the possible behaviors and resolution of the students before the problem situations, organized for purposes of experimentation.

Evolutionary Game for Confidentiality in IoT-enabled Smart Grids

We applied evolutionary game theory to extend a resource constrained security game model for confidentiality attacks in an Advanced Metering Infrastructure (AMI), which is a component of IoT-enabled Smart Grids. The AMI is modelled as a tree structure where each node aggregates the information of its children before encrypting it and passing it on to its parent. As a part of the model, we developed a discretization scheme for solving the replicator equations. The aim of this work is to explore the space of possible behaviours of attackers and to develop a framework where the AMI nodes adaptively select the most profitable strategies. Using this model, we simulated the evolution of a population of attackers and defenders on various cases resembling the real life implementation of AMI. We discuss in depth how to enhance security in AMI using evolutionary game theory either by a priori analysis or as a tool to run dynamic and adaptive infrastructure defence.

Improvement of health performance through clinical risk management: the maternal and child pathway

Purpose To improve the performance both in terms of patient safety and quality of treatments, this research studies one of the most delicate processes of health organizations, that is to say, the clinical risk management in maternal and child pathway. This paper aims to analyze the accidents that occurred in a complex health facility through the standard mapping of this pathway included in the CartoRisk, i.e. a risk assessment tool for the a priori analysis. Design/methodology/approach The research uses the case study methodology, as it explores a complex process in which a lot of variables and actors are involved. It analyzes the accidents occurred in the largest health facility at national and European level. Findings After a presentation of the regulatory framework and the studied health organization, the research analyzes the accidents occurred in maternal and child pathway from 2014 to 2018. It showed the main risks according to the standard mapping of the maternal and child pathway. Furthermore, it identified 11 new risks mainly associated with physiologic birth and Caesarean birth. Originality/value This study presents the regulatory framework, the health facility and the accidents of a health organization. Moreover, besides the accident analysis, the research integrates further risks into the standard mapping adopted to carry out this study and proposes a risk management approach. Therefore, the value of the research for operators will consist of the integration of the standard mapping used for a priori analysis to be reused in the hospitals where they work, while for researchers it will represent a deep knowledge of a real case.