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All Journal Jurnal Agrotek UMMat Variance : Journal of Statistics and Its Applications JAMBURA JOURNAL OF PROBABILITY AND STATISTICS Jurnal Pijar MIPA
Ristu Haiban Hirzi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Environmental Science Mathematics Physics Social Sciences

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PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE SNOWBALL THROWING PADA PEMBELAJARAN SEGIEMPAT UNTUK MENINGKATKAN AKTIVITAS DAN PRESTASI BELAJAR SISWA SMPN 1 LINGSAR KELAS VII-1 TAHUN PELAJARAN 2012/2013 Ristu Haiban Hirzi; Sripatmi Sripatmi; Hapipi Hapipi
Jurnal Pijar Mipa Vol. 10 No. 1 (2015): Maret
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.256 KB) | DOI: 10.29303/jpm.v10i1.15

Abstract

Abstrak: Penelitian ini bertujuan untuk meningkatkan aktivitas dan hasil belajar siswa SMPN 1 Lingsar kelas VII-1 pada materi segi empat melalui penerapan model pembelajaran Kooperatif tipe Snowball Thowing. Penelitian ini merupakan penelitian tindakan kelas yang dilaksnakaan dalam 2 siklus. Hasil penelitian menunjukkan bahwa penerapan model pembelajaran tersebut dapat memperbaiki aktivitas dan hasil belajar siswa. Hal ini ditunjukkan oleh skor aktivitas siswa tergolong tinggi pada siklus I dan sangat tinggi pada siklus II. Sedangkan skor rata-rata hasil evaluasi belajar siswa mengalami  peningkatan  pada  tiap  siklus  yaitu  pada  siklus  I rata-rata  skor  hasil evaluasi belajar 58,2 dengan ketuntasan klasikal 50% dan pada siklus II skor rata-rata hasil evaluasi belajarnya mencapai 85,74 dengan ketuntasan klasikal 89%. Capaian tersebut menunjukkan bahwa penerapan Model Pembelajaran Kooperatif tipe Snowball Throwing pada pembelajaran segiempat dapat meningkatkan aktivitas dan prestasi belajar siswa SMP Negeri 1 Lingsar kelas VII-1 tahun pelajaran 2012/2013. Kata kunci: Kooperatif tipe snow ball throwing, aktivitas belajar, hasil belajar.      Abstract: This research aims to improve the activity and student learning outcomes SMPN 1 Lingsar class VII-1 on the rectangular material through the implementation of cooperative learning model type thowing Snowball. This research is a classroom action research conducted in two cycles. The results showed that the application of the learning model can improve the activity and student learning outcomes. This is demonstrated by the student activity score relatively high on the  first cycle and very  high  in the  second cycle. While the average score on the evaluation of student learning  has increased  in  each  cycle,  namely  in  the  first  cycle  an  average  score  of  58.2  on  the  evaluation  study  with  classical completeness  50%  and  the  second  cycle  the  average  score  on  the  evaluation  study  reached  85.74  with  classical completeness  89%.  These  achievements  show  that  the  application  of  cooperative  learning  model  type  Snowball Throwing  on  the  rectangular  material  can  increase  the  activity  of  learning  and  student  achievement  SMP  Negeri  1 Lingsar class VII-1 of the school year 2012/2013. Keywords: snowball throwing cooperative type, learning activity, learning outcomes
PERBANDINGAN METODE ANN BACKPROPAGATION DAN ARMA UNTUK PERAMALAN INFLASI DI INDONESIA M. Hadiyan Amaly; Ristu Haiban Hirzi; Basirun Basirun
Jambura Journal of Probability and Statistics Vol 3, No 2 (2022): Jambura Journal Of Probability and Statistics
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjps.v3i2.15440

Abstract

A country's development progress can be measured by good economic growth. If economic growth experiences rapid growth, it will usually trigger price increases. The occurrence of an uncontrolled increase in the price of goods or services for the needs of the community can cause inflation. inflation rate for a country is an inflation rate that has a low and stable value. One alternative is to provide an overview of the inflation in Indonesia by using forecasting analysis techniques. In this study, inflation forecasting analysis in Indonesia was carried out using the ANN Backpropagation and ARMA methods. The purpose of this research is to compare the performance results of the two methods and look at the best method for forecasting results. Based on the results of the analysis with the ANN Backpropagation method, the best network architecture model was ANN(7-4-1) using an epoch value of 400 and a learning rate of 0,1 with a value of MSE = 0,0112 and RMSE = 0,1065. While the results of the analysis using the ARMA method, the best model was obtained, namely ARMA(2,0,1) with the value MSE = 0,0648 and RMSE = 0,2545. So that the most optimal method used to predict inflation for the next period is the ANN Backpropagation method because it has a smaller error value. From this model, the results of forecasting inflation rates for the months of May to December 2022 are also obtained with a range of 0,01% to 0,5%. 
ANALISIS PENYEBARAN JUMLAH KASUS PMK PADA HEWAN TERNAK SAPI DI KABUPATEN LOMBOK TENGAH MENGGUNAKAN INDEKS MORAN TAHUN 2022 Ayu Septiani; Ristu Haiban Hirzi; Nawwarun Uyun Fikriah
VARIANCE: Journal of Statistics and Its Applications Vol 5 No 2 (2023): VARIANCE: Journal of Statistics and Its Applications
Publisher : Statistics Study Programme, Department of Mathematics, Faculty of Mathematics and Natural Sciences, University of Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/variancevol5iss2page159-168

Abstract

Salah satu sektor penting dalam pertumbuhan perekonomian Indonesia adalah sektor peternakan. Keberhasilan peternakan baik besar maupun kecil, dipengaruhi oleh kesehatan ternaknya. Sejak tahun 1990 Indonesia dinobatkan sebagai negara bebas PMK oleh OIE sejak tahun 1990. Namun, pada awal bulan april 2022 PMK mulai mewabah kembali secara luas dan menjangkit hewan ternak khususnya ternak sapi. Dampak dari wabah ini, banyak peternak yang mengalami kerugian yang signifikan. Wabah PMK ini menjadikan Provinsi NTB berada di rangking ke 6 dengan total kasus aktif PMK. Sebaran kasus PMK di NTB, Lombok Tengah merupakan kasus terbanyak dengan jumlah 28.612 ekor dari populasi sapi sebanyak 323.232 ekor. Metode yang peneliti gunakan ini adalah analisis jumlah penyebaran PMK dengan pendekatan peta sebaran. Adapun tujuan dilakukan penelitian ini adalah untuk membantu pemerintah terkait mengetahui penyebaran PMK. Berdasarkan analisis data dapat diketahui pola penyebaran penyakit mulut dan kuku di Kabupaten Lombok Tengah jika dilihat dari moran scatterplot menunjukkan bahwa pola sebaran PMK berada pada kuadran I dan III.
Modeling multiple linear regression analysis in the formation of biogas pressure Basirun Basirun; Ristu Haiban Hirzi; Muanah Muanah
Jurnal Agrotek Ummat Vol 10, No 3 (2023): Jurnal Agrotek Ummat
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jau.v10i3.16302

Abstract

Fossil energy reserves to date are dwindling inversely proportional to the amount of consumption. So to overcome this problem, alternative energy is needed, one of which is biogas which is sourced from organic waste. The biogas production process has so far experienced many obstacles so that the formation of pressure has not been optimal. The aim of the research was to create a model to see the magnitude of the influence of humidity and temperature on the pressure of the biogas produced. The method used is multiple linear regression with the following stages, identifying variables, testing classical assumptions, model building, and model goodness. Based on the results of the analysis, the model Y ̂=17.029-0.042X_1+3.480X_2 is obtained. Simultaneous test results show that simultaneously humidity and temperature have a significant effect because the sig is 0.000<α(0.05). The results of the partial test (T-Test) of each variable also showed significant results on biogas pressure because the sig was 0.000<α(0.05). The coefficient of determination of 0.8180 means that humidity and temperature variables affect the formation of biogas pressure by 81.80% and the rest is influenced by other factors such us pH, C/NRatio, starter, and so on.
Co-Authors Ayu Septiani Basirun Basirun Basirun Basirun Hapipi Hapipi M. Hadiyan Amaly Muanah, Muanah Nawwarun Uyun Fikriah Sripatmi Sripatmi