Stevanus BUdi Waluya

Stevanus BUdi Waluya
Universitas Negeri Semarang | UNNES · Department of Mathematics

About

55
Publications
23,759
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284
Citations
Citations since 2017
43 Research Items
233 Citations
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201720182019202020212022202301020304050
201720182019202020212022202301020304050

Publications

Publications (55)
Article
p style="text-align: justify;">Cognitive processes are procedures for using existing knowledge to combine it with new knowledge and make decisions based on that knowledge. This study aims to identify the cognitive structure of students during information processing based on the level of algebraic reasoning ability. This type of research is qualitat...
Article
p style="text-align: justify;">Algebraic reasoning involves representation, generalization, formalization of patterns and order in all aspects of mathematics. Hence, the focus of algebraic reasoning is on patterns, functions, and the ability to analyze situations with the help of symbols. The purpose of this study was to develop a test instrument t...
Article
Algebra is a branch of mathematics that uses mathematical statements to describe the relationship between various things. This study aims to describe the algebra problem solving abilities of students in the Linear Program course. There are differences in student problem solving, which are caused by students' cognitive styles. Reflective and impulsi...
Article
This study aims to describe the profile of students' metacognitive skills in solving integral calculus problems seen from the aspects of planning, monitoring and evaluation metacognitive skills. The research method used is descriptive qualitative research methods. The subjects in this study were 3rd semester students who had taken courses or were t...
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In this paper the Poincar’e-Lindstedt perturbation method will be applied to analyse an oscillator with Rayleigh type with Periodic Damping Coefficient. The mathematical model of the oscillator describes flow-induced vibrations in a uniform wind field. The horizontal cylinder supported by springs as a model can be designed vibrate in vertical direc...
Article
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Purpose of this study is to describe the statistical literacy skills of prospective teacher students in terms of Middle Order Thinking Skills (MOTS). Students should have basic statistical competence so that they can respond, understand, analyze, interpret, and make conclusions about various information related to statistics and can give meaning to...
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The Covid-19 pandemic has changed many social structures in society. This also impacts the world of education, where suddenly the learning model that is usually done in schools must be done online. This problem has an impact on student learning outcomes, especially in the field of mathematics. This study aims to examine the problems faced by studen...
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This qualitative research purpose to analyze the mathematical representation ability of students in solving problems viewed from the level of self-efficacy. This research was conducted on 6E grade of mathematics education students at the University of Singapore Karawang. This research is focused on the ability of visual representation, equations re...
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Proportional reasoning is the important process in solving social arithmetic problems. A students’ successes in solving mathematical problem is also determined by affective abilities, one of which is a mathematical disposition. This study aims to describe the students’ proportional reasoning in solving non-routine problems based on mathematical dis...
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This article aims to analyse how conceptual understanding and productive dispositions in trigonometry through generative learning, using a qualitative research design. Participants of this study were 20 students of the level 1 Mathematics Education Study Program of the University of Swadaya Gunung Jati, who took the Intermediate Selecta Capita cour...
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This study aims to design a measuring tool for Technological Pedagogic Content Knowledge (TPACK), especially for prospective mathematics teachers. This research uses design research and Development (R n D) which refers to the ADDIE development model, which includes Analysis, Design, Development, and Evaluation. Based on the results of expert valida...
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Avian influenza is a terrible respiratory infectious disease caused by the avian influenza virus. The great concern of the world’s health experts is the possibility of spreading avian influenza and becoming an uncontrollable pandemic. The study’s purpose was to derive, analyze, and interpret the mathematical model’s simulation of the avian influenz...
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The purpose of this study was to see the effect of implementing the PBL model with the RME approach on mathematical literacy skills and learning independence. This research is a combination research using a sequential explanatory design. The quantitative research method was carried out in the first stage by following a quasi-experimental model whic...
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This study aims to determine the mathematical creative thinking abilities Level in the high mathematical creative thinking disposition category for each gender difference. This research is qualitative research using a qualitative descriptive method conducted at SMK Pertiwi Kuningan. This study describes mathematical creative thinking abilities of m...
Article
Fuzzy graph became a nice tool for modeling and designing a network that contains indeterminacy. Public transportation has become a necessity in Bantul Regency because it is one of the regions that became popular in Yogyakarta Special Region Province (YSR), Indonesia. There are many tourism sectors in Bantul that became favourite destinations in re...
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Every year, most mathematics education students have difficulty learning real analysis courses on the material of sequences and series, especially in the sub material of the limit of sequences. Difficulties in learning the concept of limits include difficulties in understanding the limit concept’s definition and visualization. The purpose of this a...
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Creative thinking is an important part in learning mathematics. However, some Mathematics Education students have low creative thinking skills, especially in the proof process in the Real Analysis course. Use the Problem Posing approach to determine the quality of students’ creative thinking abilities in the Real Analysis course. Therefore this stu...
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The main idea in this article is looking at the creative thinking patterns in mathematics learning viewed from gender on vocational high school students. Creative thinking skills are cognitive processes, and cognitive processes are inseparable from how the brain processes work. To see the ability to think creatively, we have to see how the process...
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This paper presents the results of a study of the Project Based Learning model to improve student learning activeness. As for the background of writing this paper because to face the challenges of the 21st Century skills needed to apply knowledge including communication, collaborative, critical thinking and creativity (4 C). Communication and colla...
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In mathematics, there are several abilities should be belong to students. One of the abilities should be belong to students is the ability of the mathematical representation. Mathematical representation ability makes it easy for students to solve mathematical problems, because students are required to make their mathematical models, by making mathe...
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21st Century learning directs human resources to become literate societies, where human resources can obtain information, organize, facilitate, communicate in various contexts. Statistical literacy and mathematical literacy are among the developed literacy. Statistics Literacy and mathematical literacy might be like literacy about the same discipli...
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In this paper will be studied a simple one degree of freedom system related to the dynamics of cable-stayed bridges. As a result of wind and rain that hits the bridge cable, it will cause vibrations from the cable to become unstable conditions. The presence of water flowing in the cable changes the cable cross-section as experienced by the wind pla...
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This is a qualitative research that exposed the students’ higher order thinking skills (HOTS) and how they use the technology when solving a problem in calculus lecture, especially in integral topic. Autograph software is used as a new integrated technology on learning process. The samples used in this research are 8 mathematics students in second...
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Mathematical literacy is the ability of individuals to formulate, use, and interpret mathematics in various contexts. NCTM has formulated 5 competencies in mathematics learning, namely mathematical problem solving, mathematical communication, mathematical reasoning, mathematical connection, and mathematical representation. These five abilities are...
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The ability of mathematical creativity is needed by every mathematics education student. Mathematical creativity is an important part of Mathematics education. But the mathematical creativity of most Mathematics Education students is still low. Therefore, mathematical creativity is needed for students in Mathematics Education, especially for studen...
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This study aims to explore the mathematical communication of students based on Reflective cognitive style. This research is a qualitative research that is descriptive qualitative. The subjects in this study were students who took statistics methods, the selection of research subjects with a purposive sampling technique, the validity of the data was...
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Mathematical beliefs are essential to be improved, especially for mathematics education students, to be more optimistic in overcoming difficulties. Accurate beliefs affect how students “welcome” mathematics lessons. However, the reality is that many mathematics education students still think that mathematics is an ambiguous, abstract, complicated,...
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To be creative is the highest competence in the newest Bloom's taxonomy that must be achieved by everyone, including student teachers. This research aims to 1) describe the 3CM learning model and ability of creative thinking skills in solving mathematics problems, 2) describe the student teachers' pattern and skill of creative thinking in solving m...
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This article aims to analyze mathematical critical thinking skills on student learning styles. Mathematical critical thinking skills can be developed through the character of the learning styles possessed by each student in learning mathematics. Learning can be maximized by knowing the learning styles of students and continued with the learning pro...
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In this paper will be studied an Oscillator with Mass that changes periodically and forced vibration of a simple degree of freedom. This system related to the dynamics of cables such as stayed bridges, electricity, telephone, and others. Under normal conditions for all type of cables one would not expect galloping type of vibrations due to wind-for...
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Schemata is one of the factors that influence a person's ability to solve problems creatively. Schemata in one's memory will determine how new information is processed into a new concept. This study aims to describe schemata's influence on solving mathematical problems. This research is categorized as qualitative research. Data of thinking schemata...
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___________________________________________________________________ The ability to think critically and mathematically is the most important goal taught in mathematics learning. The purpose of this study was: analyzing the increase in critical thinking skills, describing the increase in critical thinking skills in terms of self-efficacy, and descri...
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Mathematical representation is an important skill in mathematics learning that enables students to interpret and solve problems with ease. However, building confidence in such a skill can be difficult for some students, especially for those who lack self-motivation skills. Therefore, this study examines the effects of the think-talk-write strategy...
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The purposes of this research are: (1) to identify learning quality in Model Eliciting Activities (MEAs) using a Metaphorical Thinking (MT) approach regarding qualitative and quantitative; (2) to analyze mathematical literacy of students based on Self-Efficacy (SE). This research is mixed method concurrent embedded design with qualitative research...
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This research aims to develop a 3CM learning model to support student to improve their creative thinking skills. The method used in this research was R&D with ASSURE development model consisting of six stages: 1) analyze learners, 2) state objectives, 3) select method, media, and materials, 4) utilize media and materials, 5) require learner partici...
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This research was conducted to determine the literacy skills students of class X on their math skill. This study used a qualitative approach, the approach that drives meaningful results. To determine the ability of mathematical literacy class X, there were study subjects of 3 people who were selected based on their level of math skills. The determi...
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This study was aimed to analyze the ability of mathematical representations in the eighth-grade junior high school students by using the REACT strategy on the learning of Realistic Mathematics Education (RME). The REACT strategies represent Relating, Experiencing, Applying, Cooperating, and Transferring. This study was a quasi-experimental research...
Article
In this paper, a modified S-I-P of two species predator-prey interactions model is discussed. The S-I-P system consists of three differential equations that represent sub-populations growth of susceptible-preys (S), infected-preys (I) and predators (P). In prey population there is deadly disease transmission rated with Holling type II response char...
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This study aims to find out that there are differences in mathematical literacy ability in content Change and Relationship class VII Junior High School 19, Semarang by Problem Based Learning (PBL) model with an Indonesian Realistic Mathematics Education (called Pendidikan Matematika Realistik Indonesia or PMRI in Indonesia) approach assisted Elearn...
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Penelitian ini bertujuan untuk meningkatkan pemahaman konsep dan memperbaiki sikap belajar peserta didik melalui pengembangan perangkat pembelajaran matematika kons-truktivis berbasis humanistik berbantuan e-learning. Penelitian ini merupakan penelitian pe-ngembangan dengan model 4D yang diadaptasi menjadi 4P, yaitu pendefinisian (analisis awal-akh...
Article
In this paper a generalized nonlinear Van der Pol oscillator equation  X+X(2m+1)=(2n+1) = 1 X2 _ X with m; n 2 N will be studied. It will be shown that the recently devel- oped perturbation method based on integrating vectors can be used to approximate rst integrals and periodic solutions. The existence, uniqueness and stability of time- periodic...
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In this paper strongly nonlinear oscillator equations will be studied.It will be shown that the recently developed perturbation method based onintegrating factors can be used to approximate first integrals. Not onlyapproximations of first integrals will be given, butit will also be shown how in a rather efficient way the existence and stability oft...
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In this paper a strongly nonlinear forced oscillator will be studied. It will be shown that the recently developed perturbation method based on integrating factors can be used to approximate first integrals. Not onlyapproximations of first integrals will be given, butit will also be shown how, in a rather efficient way, the existence and stability...
Article
In this paper a generalized Rayleigh oscillator will be studied. It will be shown that the recently developed perturbation method based on integrating factors can be used to approxi- mate rst integrals and periodic solutions. The existence, uniqueness and stability of time-periodic solutions are obtained by using the approximations for the rst inte...
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Full-text available
In this paper a system of weakly nonlinear, coupled harmonic oscillators will be studied. It will be shown that the recently developed perturbation method based on integrating vectors can be used to approximate rst integrals and periodic solutions. To show how this perturbation method works the method is applied to a system of weakly nonlinear, cou...
Conference Paper
In this paper a nonlinear oscillator problem will be studied. It will be shown that the recently developed perturbation method based on integrating vectors can be used to approximate first in tegrals and periodic solutions. The existence, uniqueness, and stability of time-periodic solutions are obtained by using the approximations for the first int...

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