Simplification of switching functions expressed in reed—muller algebraic form

1992 ◽  
Vol 139 (6) ◽  
pp. 511 ◽  
Author(s):  
D.H. Green ◽  
G.A. Khuwaja
Keyword(s):  
Algebraic Form ◽  
Switching Functions

PENERAPAN STRATEGI PEMBELAJARAN INQUIRY DENGAN PENDEKATAN CTL (CONTEXTUAL TEACHING AND LEARNING) UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA KELAS VIII-D SMPN 4 TAMBANG

2018 ◽  
Vol 2 (2) ◽  
pp. 156
Author(s):  
Zulkifli Zulkifli
Keyword(s):  
Learning Outcomes ◽  
Teaching And Learning ◽  
Student Learning Outcomes ◽  
Average Score ◽  
Mathematics Students ◽  
Algebraic Form ◽  
Student Activity ◽  
Average Value ◽  
The Subject ◽  
Improve Student Learning

This research is based on the low learning outcome of mathematics students of grade VIII SMPN 4 Tambang.The purpose of this research is to improve the learning outcomes of mathematics through the application ofinquiry learning with CTL approach. This research was conducted in SMPN 4 Tambang with subject of classVIII-D students with 29 students. This classroom action research was started in early January 2017. Theresearch instrument consists of a teacher and student activity sheet instrument and a test of learning outcomes.Based on the results of research and discussion can be concluded that the strategy of inquiry learning with CTLapproach can improve student learning outcomes of mathematics on the subject matter of algebraic form inclass VIII-D SMPN 4 Tambang. On the basic score the number of students who reached the KKM as many as 14people (48.28%) with an average score of 58.79. In cycle I the number of students who reach the KKM of 19people (65.52%) with an average value of 65.69%. In cycle II the number reaching KKM is 25 people (86.21%).

scholarly journals Optimal Operation of the Voltage-Doubler Boost Converter through an Evolutionary Algorithm

Mathematics ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 423
Author(s):  
Cesar Ibarra-Nuño ◽  
Alma Rodríguez ◽  
Avelina Alejo-Reyes ◽  
Erik Cuevas ◽  
Juan M. Ramirez ◽  
...  
Keyword(s):  
Evolutionary Algorithm ◽  
Numerical Optimization ◽  
Boost Converter ◽  
Optimal Operation ◽  
Input Current ◽  
Voltage Gain ◽  
Duty Cycles ◽  
Switching Functions ◽  
Voltage Doubler ◽  
Current Ripple

This manuscript presents the numerical optimization (through a mathematical model and an evolutionary algorithm) of the voltage-doubler boost converter, also called the series-capacitor boost converter. The circuit is driven by two transistors, each of them activated according to a switching signal. In the former operation, switching signals have an algebraic dependence from each other. This article proposes a new method to operate the converter. The proposed process reduces the input current ripple without changing any converter model parameter, only the driving signals. In the proposed operation, switching signals of transistors are independent of each other, providing an extra degree of freedom, but on the other hand, this produces an infinite number of possible combinations of duty cycles (the main parameter of switching signals) to achieve the desired voltage gain. In other words, this leads to a problem with infinite possible solutions. The proposed method utilizes an evolutionary algorithm to determine the switching functions and, at the same time, to minimize the input current ripple of the converter. A comparison made between the former and the proposed operation shows that the proposed process achieves a lower input current ripple while achieving the desired voltage gain.

Functional and sociocultural attitudes of code-switching and its relation to the meaning-making process: The case of dubbing Kim Possible into Arabic

2021 ◽  
pp. 136700692110194
Author(s):  
Rashid Yahiaoui ◽  
Marwa J Aldous ◽  
Ashraf Fattah
Keyword(s):  
Meaning Making ◽  
Code Switching ◽  
Power Dynamics ◽  
Sociocultural Attitudes ◽  
Switching Patterns ◽  
Switching Functions ◽  
Switching Type ◽  
Lebanese Arabic ◽  
Research Questions

Aims and objectives/purpose/research questions: The aim of this study is to investigate the sociolinguistic functions of code-switching and its relation to the meaning-making process by using the animated series Kim Possible as a case study. Design/methodology/approach: This study employs Muysken’s taxonomy to draw on code-switching patterns in lexico-grammar in relation to human behavior. The study also uses the functional approaches of Muysken and Appel and Gumperz as binary investigatory frameworks to locate interlingual and intralingual code-switching particularities and to elaborate on code-switching functions. Data and analysis: The analysis encompasses 48 episodes. Firstly, we extracted and transcribed code-switching occurrences in light of Muysken’s typology episode-by-episode and categorized them according to their code-switching type (interlingual or intralingual). Secondly, we quantified the occurrences according to their syntactic form to make more systematic claims about code-switching patterns. Next, we triangulated the patterns by examining the context of utterances and extralinguistic factors in the original series vis-à-vis the dubbed version to draw upon information beyond the structure or grammar. Findings/conclusions: The Arabic dubbed version was able to communicate the characters’ cosmopolitan diversity, which correlates with the series’ sense of linguistic modernity and humor. At the same time, the Arabic version was able to portray the extralinguistic reality of Lebanon and its multi-linguistic tapestry. Originality: This research is original because it focuses on Lebanese-Arabic, a dialect seldom discussed in the context of translation. The research also examines language variations in the context of dubbed discourse, where code-switching is integrally pertinent to visual-signs and the cultural background of characters. Significance/implications: The study recognizes the intricacy of code-switching as a reflective phenomenon of social reality and power dynamics; therefore, it contributes in the fields of translation and sociolinguistics.

Surface and interfacial anti-plane waves in micropolar solids with surface energy

2020 ◽  
pp. 108128652096564
Author(s):  
Mriganka Shekhar Chaki ◽  
Victor A Eremeyev ◽  
Abhishek K Singh
Keyword(s):  
Surface Wave ◽  
Plane Wave ◽  
Numerical Study ◽  
Plane Waves ◽  
Angular Frequency ◽  
Elastic Half Space ◽  
Surface Strain ◽  
Theoretical Frameworks ◽  
Algebraic Form ◽  
New Type

In this work, the propagation behaviour of a surface wave in a micropolar elastic half-space with surface strain and kinetic energies localized at the surface and the propagation behaviour of an interfacial anti-plane wave between two micropolar elastic half-spaces with interfacial strain and kinetic energies localized at the interface have been studied. The Gurtin–Murdoch model has been adopted for surface and interfacial elasticity. Dispersion equations for both models have been obtained in algebraic form for two types of anti-plane wave, i.e. a Love-type wave and a new type of surface wave (due to micropolarity). The angular frequency and phase velocity of anti-plane waves have been analysed through a numerical study within cut-off frequencies. The obtained results may find suitable applications in thin film technology, non-destructive analysis or biomechanics, where the models discussed here may serve as theoretical frameworks for similar types of phenomena.

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