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Analisis kemampuan pemecahan masalah matematika dan self-efficacy siswa SMP negeri di Kabupaten Ciamis Utami, Ratna Widianti; Wutsqa, Dhoriva Urwatul
Jurnal Riset Pendidikan Matematika Vol 4, No 2: November 2017
Publisher : Program Studi Pendidikan Matematika Program Pascasarjana Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (705.182 KB) | DOI: 10.21831/jrpm.v4i2.14897

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Penelitian ini bertujuan untuk mendeskripsikan kemampuan pemecahan masalah matematika, self-efficacy siswa dan hubungan antara kemampuan pemecahan masalah dan self-efficacy siswa kelas VIII SMP Negeri di Kabupaten Ciamis. Penelitian ini adalah penelitian survei. Subjek penelitian terdiri dari 389 siswa kelas VIII SMP Negeri di Kabupaten Ciamis yang berasal dari 13 sekolah dengan kategori strata tinggi, sedang dan rendah. Sampel dalam penelitian ini ditentukan dengan stratified proporsional random sampling. Hasil penelitian menunjukkan bahwa 389 siswa yang dijadikan subjek penelitian memiliki kemampuan pemecahan masalah dalam kriteria rendah. Faktor-faktor yang menyebabkan keadaan tersebut diantaranya adalah siswa kurang memahami informasi pada soal, siswa kurang mampu membuat model matematis, dan siswa kurang teliti dalam menyelesiakan soal. Rata-rata self-efficacy siswa berada pada kriteria sedang, yaitu 91,17. Hubungan kemampuan pemecahan masalah matematika dan self-efficacy siswa termasuk kategori sangat rendah karena nilai r sebesar 0,104. An Analysis of Mathematics Problem Solving Ability and Self-Efficacy Students of Junior High School in Ciamis Regency AbstractThis study aims to describe the mathematics problem-solving ability, self-efficacy of students and the relationship between the problem solving and self-efficacy of the grade VIII students of the junior high school in Ciamis Regency. This study was categorized as survey research. The research subjects were 389 junior high school grade VIII in Ciamis Regency from 13 schools which were categorized as high, moderate and low schools. The research sample was selected by means of the stratified proportional random sampling technique. The results of the study are as follows, 389 students as the research subject have low criteria in problem-solving ability. Factors that cause this situation, such as students are less understanding of existing information on the problem, students are less able to make mathematical models, and students are less thorough in problem-solving. The average of students’ self-efficacy was at moderate criteria, 91.17. The relationship between problem-solving ability and self-efficacy of students was at very low criteria because of the r-value of 0.104. 
EFFECTIVENESS OF PROBLEM POSING AND INVESTIGATION IN TERMS OF PROBLEM SOLVING ABILITIES, MOTIVATION AND ACHIEVEMENT IN MATHEMATICS Muzayyanah, Arifah; Wutsqa, Dhoriva Urwatul
Annals of Mathematical Modeling Vol 1, No 2 (2019)
Publisher : Annals of Mathematical Modeling

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (335.347 KB) | DOI: 10.33292/amm.v1i2.27

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The study aims at describing the comparison between the Problem-Posing Approach and the Investigation Approach in terms of effectiveness from the perspective of Mathematical Problem-Solving Skills, mathematical motivation and Mathematical Learning Achievements. The nature of the study is a quasi-experimental research. During the conduct of the study, the overall number of populations was 206 students from Grade VII of the State 2 Junior High School Gamping. The samples within the study were selected randomly from the population namely 32 students from Grade VII A and 34 students from Grade VII B. Then, the instrument that had been administered within the conduct of the study was the Mathematical Problem-Solving Skills Test, the Mathematical Learning Achievement Test and the Mathematical Learning Motivation Questionnaire. After the data had been gathered, the overall data were analysed by using the one-sample t-test, the T2 Hotteling?s Test and the independent sample t-test. The results of the study show that the learning process by means of Investigation Approach has been more effective in comparison to Problem-Posing Approach from the perspective of Mathematical Problem-Solving Skills and Mathematical Learning Achievement but, on the other hand, the results of the study also show that the learning process by means of Problem-Posing Approach has been more effective in comparison to Investigation Approach from the perspective of Mathematical Learning Motivation for the Grade VII students of the State 2 Junior High School Gamping.
Construction of fuzzy radial basis function neural network model for diagnosing prostate cancer Agus Maman Abadi; Dhoriva Urwatul Wutsqa; Nurlia Ningsih
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 19, No 4: August 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v19i4.20398

Abstract

In this paper, we propose a construction of fuzzy radial basis function neural network model for diagnosing prostate cancer. A fuzzy radial basis function neural network (fuzzy RBFNN) is a hybrid model of logical fuzzy and neural network. The fuzzy membership function of the fuzzy RBFNN model input is developed using the triangle function. The fuzzy C-means method is applied to estimate the center and the width parameters of the radial basis function. The weight estimation is performed by various ways to gain the most accurate model. A singular value decomposition (SVD) is exploited to address this process. As a comparison, we perform other ways including back propagation and global ridge regression. The study also promotes image preprocessing using high frequency emphasis filter (HFEF) and histogram equalization (HE) to enhance the quality of the prostate radiograph. The features of the textural image are extracted using the gray level co-occurrence matrix (GLCM) and gray level run length matrix (GLRLM). The experiment results of fuzzy RBFNN are compared to those of RBFNN model. Generally, the performances of fuzzy RBFNN surpass the RBFNN in all accuracy calculation. In addition, the fuzzy RBFNN-SVD demonstrates the most accurate model for prostate cancer diagnosis.
EFEKTIVITAS MEDIA E-LEARNING DENGAN METODE GUIDED DISCOVERY DITINJAU DARI KEMANDIRIAN BELAJAR SISWA PADA PEMBELAJARAN MATEMATIKA Ulfa Lu'luilmaknun; Dhoriva Urwatul Wutsqa
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 7, No 3 (2018)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.986 KB) | DOI: 10.24127/ajpm.v7i3.1572

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This study aims to discover the effect of e-learning media with guided discovery learning method of students’ self regulated  learning in mathematics. The study employed quasi-experimental method using two classes which are experiment and control class. The subject of this study are 79 eight grade students. The instrument used is self regulated learning questionnaire. The learning process of the experiment class implement only e-learning media with guided discovery method while the control class implement only guided discovery method. The result shows that students’ self regulated learning in the experiment class higher than the control class. It can be concluded that e-learning media with guided discovery method is effective based on students’ self regulated learning in mathematics. 
Pengembangan model pembelajaran PBL pada pelajaran matematika untuk meningkatkan kemampuan investigasi dan ranah afektif Berta Nurwidyastuti; Dhoriva Urwatul Wutsqa
Jurnal Pendidikan Matematika dan Sains Vol 4, No 1 (2016): June 2016
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpms.v4i1.12952

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Penelitian ini bertujuan untuk menghasilkan model pembelajaran Problem-Based Learning (PBL) untuk meningkatkan kemampuan investigasi dan ranah afektif yang valid, praktis dan efektif. Jenis penelitian ini adalah penelitian pengembangan (Research and Development) dengan menggunakan model pengembangan Borg Gall.  Subjek penelitian ini adalah 35 siswa  kelas VII SMP Negeri 6 Yogyakarta. Analisis data dilakukan dengan mengkonversi total skor aktual yang diperoleh menjadi data kualitatif skala lima. Produk yang dikembangkan, yaitu buku model pembelajaran PBL, RPP, lembar kerja (LK), tes prestasi belajar (TPB), dan tes kemampuan investigasi (TKI). Hasil validasi ahli, skor penilaian guru, tanggapan siswa, observasi pembelajaran, tes prestasi belajar, dan tes kemampuan investigasi menunjukkan bahwa buku model pembelajaran PBL, RPP, lembar kerja (LK), tes prestasi belajar (TPB), dan tes kemampuan investigasi (TKI) adalah valid, praktis, dan efektif. Dengan demikian, secara keseluruhan penelitian yang dilakukan menunjukkan bahwa produk yang dikembangkan layak untuk digunakan ditinjau dari aspek kevalidan, kepraktisan dan keefektifan.Kata Kunci: pengembangan model pembelajaran, problem based learning, kemampuan investigasi, ranah afektif Developing PBL Model on Mathematics Lesson to Enhance Investigation Skills and Affective Factor Of 7th Grade Students AbstractThis study aimed to develop Problem Based Learning (PBL) model which is valid, practical and effective for enhancing investigation skills and affective factor. This study was research and development which applied Borg and Gall development methodology. The subjects of this study were 35 grade 7 students of SMP N 6 Yogyakarta. The data analysis was done by converting the actual score into qualitative data with standard scale of five. The developed products were Problem Based Learning (PBL) Model book, lesson plan, worksheet, learning test, and investigation skill test. Based on the results of validation experts, teacher’s appraisal, students’ response, learning observation, learning test and investigation skill’s test, the developed products were valid, practical and effective. In general, this study has shown that the developed products were reliable to be used as they fulfill the valid, practical and effectiveness aspects.Keywords: learning model development, problem based learning, investigation skill, affective factor
Versi fuzzy teorema utama homomorfisma grup Karyati '; Dhoriva Urwatul Wutsqa
Jurnal Sains Dasar Vol 2, No 2 (2013): October 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jsd.v2i2.3300

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Abstrak Penelitian terkait dengan struktur aljabar fuzzy telah diawali oleh Rosenfield. Terkait dengan penelitian tersebut, banyak peneliti lain yang meneliti beberapa struktur aljabar dalam versi fuzzy, termasuk subgrup fuzzy. Struktur grup, merupakan struktur aljabar yang melibatkan satu operasi biner yang bersifat asosiatif, terdapat elemen identitas dan setiap elemennya mempunyai invers. Terkait dengan struktur grup, maka selalu dibicarakan tentang homomorfisma, kernel dan teorema fundamental homomorfisma grup. Teorema tersebut mengatakan bahwa suatu grup hasil bagi isomorfis dengan peta homomorfismanya. Dalam penelitian ini akan diselidiki versi fuzzy dari teorema fundamental homomorfisma grup. Dalam menyelesaikan masalah dalam penelitian ini, diawali dengan mencermati beberapa definisi dan teorema, lemma dan proposisi terkait dengan teori grup maupun teori subgrup fuzzy. Berdasarkan definisi dan beberapa sifat peta dan pra peta homomorfik  suatu subgrup fuzzy relatif terhadap suatu homomorfisma grup, yang ternyata membentuk subgrup fuzzy masing-masing dari kodomain dan domain homomorfismanya. Berdasarkan kondisi ini, berhasil diselidiki beberapa sifat terkait dengan peta dan pra-peta homomorfik, subhimpunan level dan subgrup hasil bagi fuzzy. Pada akhirnya dapat buktikan: jika  adalah homomorfisma grup dari  ke   yang ‘onto’ dengan kernel  dan  subgrup fuzzy dari  maka subgrup hasil bagi fuzzy-nya isomorfis dengan peta homomorfis  relatif terhadap .   Kata kunci: peta homomorfis, pra-peta homomorfis, subgrup hasil bagi fuzzy, teorema fundamental homomorfisma grup
Kemampuan literasi matematika siswa SMP Negeri se-Kabupaten Bantul Rifai Rifai; Dhoriva Urwatul Wutsqa
Jurnal Pendidikan Matematika dan Sains Vol 5, No 2 (2017): December 2017
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1108.572 KB) | DOI: 10.21831/jpms.v5i2.15747

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Penelitian ini bertujuan untuk mendeskripsikan kemampuan literasi matematika siswa SMP Negeri di Kabupaten Bantul Yogyakarta. Teknik pengambilan sampel menggunakan cluster random sampling (teknik sampling kelompok). Jumlah anggota sampel penelitian ini 484 siswa kelas IX SMP dari 17 SMP Negeri yang dipilih dari setiap kecamatan di Kabupaten Bantul Daerah Istimewa Yogyakarta. Pengumpulan data menggunakan tes dengan instrumen 10 butir soal literasi yang memliliki reliabilitas dengan kualifikasi baik. Hasil penelitian menunjukkan bahwa kemampuan literasi matematika siswa SMP Negeri di Kabupaten Bantul masih tergolong kategori sangat rendah. Kemampuan literasi matematika siswa SMP Negeri di Kabupaten Bantul untuk domain konten bilangan,  peluang dan data termasuk kategori sedang, sedangkan untuk konten aljabar termasuk dalam kategori rendah, dan geometri termasuk kategori sangat rendah. Kemampuan literasi matematika siswa SMP Negeri di Kabupaten Bantul untuk domain proses memformulasikan situasi matematika termasuk kategori tinggi, untuk domain proses menggunakan konsep, fakta, prosedur, dan penalaran matematika termasuk kategori rendah , dan untuk domain proses menafsirkan, menerapkan, dan mengevaluasi hasil matematika termasuk kategori sangat rendah.Kata kunci: literasi matematika  Mathematical literacy of state junior secondary school students in Bantul Regency AbstractThe aim of this research was to describe mathematical literacy of State Junior Secondary School students in Bantul Regency Yogyakarta. The sampling was cluster random sampling. The number of member of sample used was 484 students that were choosen from 17th Junior Secondary Schools in each subdistrict in Bantul Regency. The data collection was by tests. The students were tested with 10 items of mathematical literacy problem which have good reliability qualification. The research finding revealed that mathematical literacy of State Junior Secondary School students in Bantul Regency was in very low category. Mathematical literacy of State Junior Secondary School students in Bantul Regency for quantity, uncertainty and data belongs to average category, whereas for algebra belongs to low category, and for geometry belongs to very low category. Mathematical literacy of State Junior Secondary School students in Bantul Regency for formulating situations mathematically domains belongs to high category, for employing mathematical concepts, fact, procedures, and reasoning domains belongs to low category, and for interpreting, applying, and evaluating mathematical outcomes domains belongs to very low category.Keywords: mathematical literacy
PEMBELAJARAN PROBLEM BASED LEARNING DENGAN PENGGUNAAN BAHAN MANIPULATIF DITINJAU DARI MINAT BELAJAR MATEMATIKA Konstantinus Denny Pareira Meke; Maria Trisna Sero Wondo; Dhoriva Urwatul Wutsqa
JPPM (Jurnal Penelitian dan Pembelajaran Matematika) Vol 13, No 2 (2020): JPPM (Jurnal Penelitian dan Pembelajaran Matematika) Volume 13 Nomor 2 Agustus
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (306.049 KB) | DOI: 10.30870/jppm.v13i2.6834

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Penelitian ini bertujuan untuk mendeskripsikan keefektifan Problem Based Learning (PBL)  dengan penggunaan bahan manipulatif ditinjau dari minat belajar siswa. Penelitian kuasi eksperimen ini menggunakan pendekatan kuantitatif dengan dua perlakuan yaitu untuk kelas eksperimen berupa pembelajaran problem based learning dengan penggunaan bahan manipulatif dan kelas kontrol menggunakan pembelajaran problem based learning. Pengumpulan data dilakukan dengan menggunakan angket untuk mengetahui minat belajar siswa terhadap pembelajaran matematika. Untuk melihat keefektifan perlakuan pada kedua kelas, data minat belajar matematika masing-masing dianalisis dengan uji t satu sampel. Perbedaan keadaan siswa sebelum perlakuan dan perbedaan keefektifan diukur dengan menggunakan MANOVA. Selanjutnya untuk membandingkan keunggulan antara kelas eksperimen dan kelas kontrol digunakan uji t dua sampel independen dengan taraf signifikansi 5%. Hasil penelitian menunjukkan baik pembelajaran problem based learning dengan penggunaan bahan manipulatif dan pembelajaran problem based learning, keduanya efektif ditinjau dari minat belajar siswa terhadap pembelajaran matematika. Terdapat perbedaan keefektifan antara kedua kelas setelah diberikan perlakuan, dimana kelas dengan pembelajaran problem based learning dengan penggunaan bahan manipulatif lebih efektif ditinjau dari minat belajar siswa terhadap matematika.
Statistical Inference for Modeling Neural Network in Multivariate Time Series Dhoriva Urwatul Wutsqa; Subanar Subanar; Suryo Guritno; Zanzawi Soejoeti
Jurnal ILMU DASAR Vol 9 No 1 (2008)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (136.781 KB)

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We present a statistical procedure based on hypothesis test to build neural networks model in multivariate time series case. The method involved strategies for specifying the number of hidden units and the input variables in the model using inference of R2 increment. We draw on forward approach starting from empty model to gain the optimal neural networks model. The empirical study was employed relied on simulation data to examine the effectiveness of inference procedure. The result showed that the statistical inference could be applied successfully for modeling neural networks in multivariate time series analysis.
Keefektifan pendekatan contextual teaching learning dan problem solving ditinjau dari prestasi dan kepercayaan diri siswa Usi Susanti; Dhoriva Urwatul Wutsqa
Jurnal Riset Pendidikan Matematika Vol 7, No 1: May 2020
Publisher : Program Studi Pendidikan Matematika Program Pascasarjan Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jrpm.v7i1.8537

Abstract

Tujuan dari penelitian ini adalah untuk mendeskripsikan keefektifan pendekatan Contextual Teaching and Learning (CTL) dan problem-solving ditinjau dari prestasi belajar dan kepercayaan diri. Penelitian ini merupakan penelitian eksperimen semu dengan populasi semua siswa kelas VII SMP Negeri 1 Yogyakarta Tahun Ajaran 2015/2016 yang terdiri dari delapan kelas. Sampel penelitian dipilih secara acak, dari delapan kelas yang ada terpilih dua kelas yaitu VII A dan VII B. Kelas VII A sebagai kelas eksperimen I diajar dengan pendekatan CTL dan kelas VII B sebagai kelas eksperimen II diajar dengan pendekatan problem solving. Instrumen yang digunakan dalam penelitian ini adalah tes prestasi belajar dan angket kepercayaan diri siswa. Data dianalisis menggunakan one sample t-test yakni digunakan untuk menyelidiki keefektifan pendekatan CTL dan problem solving; dan Multivariate Analysis of Variance (Manova), digunakan untuk menyelidiki perbedaan keefektifan antara pendekatan CTL dan problem solving. Temuan penelitian menunjukkan bahwa pendekatan CTL dan problem solving masing-masing efektif ditinjau dari prestasi belajar, tetapi tidak efektif ditinjau dari kepercayaan diri siswa pada pembelajaran materi himpunan kelas VII. Untuk perbedaan keefektifan, hasil temuan menunjukkan bahwa tidak terdapat perbedaan keefektifan antara pendekatan CTL dan problem solving ditinjau dari prestasi belajar dan kepercayaan diri. The effectiveness of the CTL and problem-solving approaches in terms of the achievement and self-confidence AbstractThe purpose of this study is to describe the effectiveness of Contextual Teaching and Learning (CTL) and problem-solving approaches in terms of achievement and self-confidence. This study was quasi-experiment research with the entire population of the seventh-grade students of State Junior High School 1 Yogyakarta in 2015/2016 which consisted of eight classes. The research sample classes VIIA and VII B were randomly selected from the eight classes. Class VII A as the experiment class I was taught by using the CTL approach and class VII B as the experiment class II was taught by using the problem-solving approach. The instruments of the study were an achievement test and the students’ self-confidence questionnaire. The data were analyzed using a one-sample t-test to investigate the effectiveness of CTL and problem-solving approach; and Multivariate Analysis of Variance (Manova), to investigate the difference between the effectiveness of CTL and problem-solving approaches. The research findings indicate that the CTL and problem-solving approaches each are effective in term of achievement, but it’s not effective in term of and self-confidence in the teaching of the set topic to the seventh-grade students. For differences ineffectiveness, the findings indicate that there is no difference between the CTL and problem-solving approaches in terms of students’ achievement and self-confidence.