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All Journal TEKNIK Proceedings of KNASTIK Jurnal Pendidikan Matematika (Jupitek) Wiyata Dharma: Jurnal Penelitian dan Evaluasi Pendidikan Jurnal Magister Pendidikan Matematika (JUMADIKA) AMM Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Edumatika Setawar Abdimas Indonesian Journal of Aerospace
Wahyu Widada
Edwar Technology Co
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Education Engineering Mathematics

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SIMULASI FILTER KALMAN UNTUK ESTIMASI SUDUT DENGAN MENGGUNAKAN SENSOR GYROSCOPE Wahyudi, Wahyudi; Susanto, Adhi; Pramono H, Sasongko; Widada, Wahyu
TEKNIK Volume 30, Nomor 2, Tahun 2009
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (556.948 KB) | DOI: 10.14710/teknik.v30i2.1871

Abstract

The Kalman filter is a recursive solution to the process linear filtering problem that can remove the noisefrom signal and then the information can useful. The process that use Kalman filter must be approximatedas two equations of linear system, state equation and output equation. Computation of Kalman filter isminimizes the mean of the square error. This paper explore the basic consepts of the Kalman filteralgorithm and simulate its to filter data of gyroscope to get a rotation. The measurement noise covariancedetermines how much information from the sample is used. If measurement noise covariance is high showthat the measurement isn’t very accurate. The process noise covariance contributes to the overalluncertainty of the estimate as it is added to the error covariance matrix in each time step. If the errorcovariance matrix is small the Kalman filter incorporates a lot less of the measurement into estimate ofrotation.
ELIMINASI NOISE SIGNAL RADAR SEKUNDER MENGGUNAKAN FOURIER FILTER Widada, Wahyu; Kliwati, Sri
Proceedings of KNASTIK 2009
Publisher : Duta Wacana Christian University

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Abstract

Frekuensi signal radar sekunder yang sedang dikembangkan hanya terdiri dari satu buah saja. Oleh karena itumemerlukan bandpass filtering yang sangat tajam, supaya jika ada noise maka dapat dihilangkan. Tulisan inimengaplikasikan Fourier filter untuk eliminasi noise signal radar tersebut, sehingga dapat meningkatkan akurasi perhitunganjarak. Frekuensi bandpass filter adalah 3.5 kHz untuk deteksi peluncuran roket jarak jauh (>100 km). Hasil yang diperolehmenunjukkan hasil yang sangat bagus dalam merekonstruksi kembali signal yang telah tercampur noise
PENGARUH PROBLEM-BASED LEARNING BERBASIS ETNOMATEMATIKA REJANG LEBONG TERHADAP KEMAMPUAN BERPIKIR KRITIS SISWA SMA Sarwoedi, Sarwoedi; Widada, Wahyu; Herawaty, Dewi
Annals of Mathematical Modeling Vol 1, No 1 (2019)
Publisher : Annals of Mathematical Modeling

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (158.81 KB) | DOI: 10.33292/amm.v1i1.39

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh problem based learning (PBL) berbasis etnomatematika Rejang Lebong terhadap Kemampuan Berpikir Kritis dan Pemecahan Masalah Siswa SMA Negeri Rejang Lebong. Penelitian ini adalah penelitian eksperimen semu. Populasi dalam penelitian ini adalah seluruh siswa kelas X SMA negeri 10 Lejang Lebong dengan sampel 4 kelas. Instrumen yang dalam penelitian ini adalah tes kemampuan berpikir kritis. Dari hasil penelitian dapat disimpulkan bahwa terdapat pengaruh  kemampuan awal siswa, model pembelajaran dan orientasi materi trigonometri secara bersama-sama terhadap kemampuan berpikir kritis yaitu dengan pengaruh sebesar 61,6%.
INITIAL DESIGN FOR LEARNING THEORY INTRODUCTION TO RIEMANN GEOMETRY THROUGH AN ETHNOMATHEMATICS LEARNING APPROACH Nugroho, Khathibul Umam Zaid; Widada, Wahyu; Anggoro, Abdurrobbil Falaq Dwi; Anggoro, Shadaqnas Dewarif Tri
Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistika Vol. 6 No. 1 (2025): Jurnal Lebesgue : Jurnal Ilmiah Pendidikan Matematika, Matematika dan Statistik
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/lb.v6i1.791

Abstract

Riemann Geometry is a difficult elective for students. The ethnomathematics approach is one way to make it easier for students to learn geometry. The aim of this research is to produce a learning theory for Introduction to Riemann Geometry through an ethnomathematics learning approach that is valid. This research method applies a research design. There are three stages, namely Preliminary Research; Prototype, and the last is the Assessment Stage. The results of this research are that the learning and its tools are valid based on validation by seven experts. In conclusion, the initial design of the learning theory for Riemann Geometry is very valid.
WORKSHOP PEMBUATAN MEDIA PEMBELAJARAN DARING BERBANTUAN LIVEWORKSHEET UNTUK GURU MATEMATIKA MADRASAH IBTIDAIYAH Nugroho, Khathibul Umam Zaid; Anggoro, Abdurrobbil Falaq Dwi; Widada, Wahyu; Anggoro, Shadaqnas Dewarif Tri
Setawar Abdimas Vol. 4 No. 1 (2025): Januari
Publisher : Universitas Muhammadiyah BengkuluUniversitas Muhammadiyah Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36085/sa.v4i1.7312

Abstract

Penggunaan media pembelajaran daring liveworksheet telah menjadi kebutuhan penting dalam era digital saat ini. Namun, guru matematika Madrasah Ibtidaiyah (MI) masih kurangn mampu dalam mengolah materi pelajaran matematika menjadi format digital yang interaktif. Tujuan workshop ini adalah meningkatkan kompetensi digital guru matematika MI dalam menggunakan teknologi pembelajaran daring, khususnya platform liveworksheet. Workshop media pembelajaran daring berbantuan liveworksheet untuk guru matematika MI dilaksanakan dengan metode yang komprehensif dan interaktif. Kegiatan ini menggabungkan berbagai pendekatan untuk memastikan pemahaman dan penguasaan materi oleh peserta. Kegiatan pengabdian berupa workshop media pembelajaran daring berbantuan liveworksheet untuk guru matematika MI telah menghasilkan berbagai dampak positif. Para peserta menunjukkan peningkatan signifikan dalam pemahaman dan keterampilan penggunaan teknologi pembelajaran daring, khususnya platform liveworksheet. Ada peningkatan rata-rata 75% dalam pemahaman dan kemampuan menggunakan liveworksheet untuk pembelajaran matematika daring.
PENGARUH MODEL PEMBELAJARAN EVERYDAY MATHEMATICS DAN GAYA KOGNITIF TERHADAP KEMAMPUAN BERPIKIR KRITIS SISWA SMA NEGERI 4 SELUMA BENGKULU Pambudi, Galih Ageng; Widada, Wahyu; Nirwana, Nirwana; Herawaty, Dewi
Jurnal Pendidikan Matematika (JUPITEK) Vol 3 No 1 (2020): Jurnal Pendidikan Matematika (JUPITEK)
Publisher : Program Studi Pendidikan Matematika FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (445.83 KB) | DOI: 10.30598/jupitekvol3iss1pp13-22

Abstract

This article explains the results of research on the influence of everyday mathematics learning models on critical thinking skills of Class XI students of SMA Negeri 4 Seluma in the 2019/2020 Academic Year. This type of research is experimental research with quasi experimental. This research was conducted at SMAN 4 Seluma in the odd semester of the 2019/2020 school year with a population of all class XI and sample classes XI MIA1, XI MIA2, XI MIA3, and XI IIS2. Research data were analyzed using Ancova test. The results showed that there were differences in critical thinking skills between students taught with everyday mathematics and conventional learning models after controlling students' initial abilities with p-value = 0.00 <0.05, there were differences in critical thinking between students whose cognitive styles were Field Independent (FI), and Field Dependent (FD) cognitive style after controlling students 'initial abilities with p-value = 0.00 <0.05, there is an influence of learning model interaction and cognitive style on critical thinking skills after controlling students' initial abilities with grades p-value = 0.00 <0.05, there is a linear influence of students 'initial covariate ability on critical thinking skills with p-value = 0.00 <0.05, students' initial ability, everyday mathematics learning model and cognitive style together - the same effect on critical thinking skills p-value = 0.00 <0.05
THE TRANS LEVEL CHARACTERISTICS ABOUT INFINITE SERIES Widada, Wahyu; Herawaty, Dewi; Anggoro, Abdurrobbil Falaq; Nugroho, Khathibul Umam Z
Jurnal Magister Pendidikan Matematika (JUMADIKA) Vol 1 No 1 (2019): Jurnal Magister Pendidikan Matematika (JUMADIKA)
Publisher : Prodi Magister Pendidikan Matematika Pascasarjana Universitas Pattimura Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (547.488 KB) | DOI: 10.30598/jumadikavol1iss1year2019page19-24

Abstract

Infinite series is one of the difficult calculus material for students. It needs to be analyzed the cognitive activities of students to make it easier for lecturers to arrange learning plans. The purpose of this study is to describe the characteristics of the trans level about infinite series. The subject of this research was a student of Mathematics Education, one of the universities in Bengkulu. A total of 5 people were selected from 29 students based on their cognitive abilities. Subjects were interviewed based on the assignment given. Data is analyzed through its genetic decomposition. The results of the study are that subjects can coordinate other objects and processes, so that the scheme is formed about the convergence of infinite series and sequences. Conclusion: the subject is able to do thematization so that forming a mature scheme is a trance level characteristic.
The Relationship among Self-Efficacy, Mathematical Concepts Understanding, Creative Thinking Skills, Mathematical Problem-Solving Skills, and Mathematics Learning Outcomes Nugroho, Khathibul Umam Zaid; Izwanto, Eddy; Widada, Wahyu; Alias, Norma; Anggoro, Abdurrobbil Falaq Dwi; Herawaty, Dewi; Jumri, Rahmat; Anggoro, Shadaqnas Dewarif Tri
Edumatika Vol 6 No 2 (2023): November 2023, Edumatika : Jurnal Riset Pendidikan Matematika
Publisher : Fakultas Tarbiyah dan Ilmu Keguruan IAIN Kerinci

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32939/ejrpm.v6i2.3169

Abstract

The proficiency of students in mathematical problem-solving skills is believed to be shaped by factors such as mathematical concepts understanding, creative thinking skills, and self-efficacy. This research endeavors to investigate the interplay among self-efficacy, mathematical concepts understanding, creative thinking skills, problem-solving skills, and mathematics learning outcomes. Employing a survey approach, the study encompasses all ninth-grade students in Central Bengkulu, Bengkulu, Indonesia, with a sample of 100 students selected through proportional stratified random sampling. Data collection involves Likert scale instruments for self-efficacy, along with tests for mathematical concepts understanding, creative thinking skills, and problem-solving skills. Path analysis techniques are applied for data analysis. The findings of the research indicate that mathematical concepts understanding, creative thinking skills, and problem-solving skills collectively exert a positive influence on mathematics learning outcomes. Additionally, it is demonstrated that self-efficacy, understanding mathematical concepts, and creative thinking skills collectively contribute positively to problem-solving skills. Furthermore, the research reveals a direct positive influence of self-efficacy on both mathematical concepts understanding and creative thinking skills.
Mathematics study habits through an ethnomathematics approach and entrepreneurial behavior of mathematics education students Anggoro, Abdurrobbil Falaq Dwi; Widada, Wahyu; Nugroho, Khathibul Umam Zaid; Herawaty, Dewi; Jumri, Rahmat; Anggoro, Shadaqnas Dewarif Tri; Alias, Norma; Ismoen, Muhaimin
Wiyata Dharma: Jurnal Penelitian dan Evaluasi Pendidikan Vol 11 No 2 (2023)
Publisher : Universitas Sarjanawiyata Tamansiswa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30738/wd.v11i2.16617

Abstract

This research aims to determine whether there is a positive correlation between mathematics learning habits through an ethnomathematics approach and entrepreneurial behavior. This research is survey research conducted by mathematics education students in Bengkulu and Lubuklinggau. The sample for this research consisted of 70 students. There are two questionnaires as research instruments. Both are a questionnaire on mathematics learning habits using an ethnomathematics approach, and an entrepreneurial behavior questionnaire. The result of this research is that the complete structural equation model fit test is a good fit, which means that the empirical structural equation model is suitable with the theoretical (conceptual) structural equation model. The results of the hypothesis test show that the calculated t value is 11.364 > 1.96, which means Ho is rejected, meaning that this research hypothesis is accepted. The conclusion is that there is a positive correlation between mathematics learning habits through an ethnomathematics approach and entrepreneurial behavior.
PENGEMBANGAN DETEKTOR SIGNAL RADIO MULTI CHANNEL UNTUK RADIO TRACKING ROKET MENGGUNAKAN LOGARITMIK AMPLIFIER Zain, Satria G.; Susanto, Adi; Widodo, Thomas Sri; Widada, Wahyu; Kliwati, Sri
Indonesian Journal of Aerospace Vol. 6 No. 2 (2008): Jurnal Teknologi Dirgantara
Publisher : BRIN Publishing

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Abstract

Pengukuran kuat signal radio telemetri roket sangat penting dilakukan untuk mengetahui hubungan kualitas signal dan data yang diterima. Power meter ini juga dapat diaplikasikan untuk deteksi perubahan sudut elevasi dan azimuth trayektori roket dengan menggunakan array antena yagi yang telah dikembangkan metodenya. Power meter radio mempunyai rentang pengukuran yang sempit, sehingga terjadi saturasi untuk pengukuran radio dengan power yang cukup besar. Tulisan ini membahas desain dan pengembangan power detektor untuk mendeteksi signal radio pada sistem telemetri roket dengan maksimum pengukutan 1 watt dan dapat diubah sesuai dengan kebutuhan. Signal power meter ini berbasis logarithmic amplifier dengan lebar band sampai dengan 100 db dengan ketelitian 0.02 dB.
Co-Authors Adhi Susanto Adi Susanto Alias, Norma Anggoro, Abdurrobbil Falaq Anggoro, Abdurrobbil Falaq Dwi Anggoro, Shadaqnas Dewarif Tri DEWI HERAWATY Ismoen, Muhaimin Izwanto, Eddy Masri Masri Nirwana, Nirwana Nugroho, Khathibul Umam Z Pambudi, Galih Ageng Rahmat Jumri romi wiryadinata Sarwoedi, Sarwoedi Sasongko Pramono Hadi Sri Kliwati Syah, Agus Harno Nurdin Thomas Sri Widodo WAHYUDI Wahyudi Wahyudi Zain, Satria G.