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All Journal Journal of Mathematics and Mathematics Education (JMME) Prosiding Seminar Nasional Teknik Sipil UMS
Ikawati, Nur
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Civil Engineering, Building, Construction & Architecture Education Engineering Mathematics

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Prediksi Umur Waduk Logung berdasarkan Erosi Lahan dan Hasil Sedimen Ikawati, Nur; Legono, Djoko; Yulistiyanto, Bambang
Prosiding Seminar Nasional Teknik Sipil UMS 2019: Prosiding Seminar Nasional Teknik Sipil UMS
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (797.896 KB)

Abstract

Faktor utama penyebab turunnya kapasitas tampungan air Waduk Logung adalah tingginya laju sedimentasi akibat erosi lahan pada daerah hulu waduk. Oleh karena itu diperlukan kajian tentang evaluasi umur Waduk Logung berdasarkan kondisi saat ini. Penelitian ini bertujuan untuk memperkirakan umur Waduk Logung menggunakan pendekatan erosi lahan dan hasil sedimen. Erosi lahan dihitung berdasarkan model erosi Revised Universal Soil Loss Equation (RUSLE) dengan integrasi Sistem Informasi Geografis (SIG) berbasis grid, sedangkan hasil sedimen diperkirakan menggunakan pendekatan angkutan sedimen di sungai. Analisis Sediment Delivery Ratio (SDR) menghasilkan laju sedimen yang masuk ke waduk. Volume sedimen yang mengendap diprediksi menggunakan hubungan trap efficiency dan voume berat kering sedimen. Hasil penelitian menunjukkan bahwa besarnya laju erosi lahan pada DTA Waduk Logung diperoleh sebesar 1.910.421 ton/tahun. Sedangkan hasil sedimen pada DTA Waduk Logung diketahui sebesar 452.649 ton/tahun, sehingga nilai SDR pada DTA Waduk Logung sebesar 0,237. Umur efektif Waduk Logung diperkirakan hanya mampu bertahan sampai masa operasi selama 39 tahun.
EKSPERIMENTASI MODEL PEMBELAJARAN KOOPERATIF TIPE GROUP INVESTIGATION (GI) DAN TIPE THINK PAIR SHARE (TPS) DENGAN PENDEKATAN SAINTIFIK PADA MATERI POKOK HIMPUNAN DITINJAU DARI ADVERSITY QUOTIENT (AQ) Ikawati, Nur; Mardiyana, Mardiyana; Sari Saputro, Dewi Retno
Journal of Mathematics and Mathematics Education Vol 6, No 1 (2016): Journal of Mathematics and Mathematics Education (JMME)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jmme.v6i1.10036

Abstract

Abstract: The aim of the research was to know the effect of learning models on mathematics learning achievement viewed from the student Adversity Quotient (AQ). The learning models compared were the cooperative learning model of the Group Investigation with scientific approach (GI-S), the cooperative learning model of the Think Pair Share with scientific approach (TPS-S), and model of classical learning with scientific approach (K-S). The type of the research was a quasi experimental research with the factorial design of 3 x 3. The population were all students of Junior High School in Bantul regency on academic year 2014/2015. The samples of  the research were taken by using the stratified cluster random sampling. The instruments used were mathematics achievement test and questionnaires of AQ. The hypotheses of the research were analyzed by using the two-way analysis of variance with unbalanced cells at the significance level of . The results of the research are as follows. 1) GI-S gives better mathematics achievements than TPS-S, and both gives better mathematics achievements than K-S. 2) Students with AQ type of climber have better mathematics achievements than students with AQ type of camper and type of quitter, while students with AQ type of camper have better mathematics achievements than students with AQ type of quitter. 3) For GI-S and TPS-S, students with AQ type of climber and type of camper have the same mathematics achievements, and students with AQ type of climber and type of camper gives better mathematics achievements than students with AQ type of quitter. For K-S, students with AQ type of climber have better mathematics achievements than students with AQ type of camper and type of quitter, and both have the same mathematics achievements. 4) For students with AQ type of climber and type of quitter, GI-S, TPS-S, and K-S gives the same mathematics achievement. For students with AQ type of camper, GI-S and TPS-S gives the same mathematics achievements, and both gives better mathematics achievements than K-S.Keywords: GI, TPS, Classical, Scientific Approach, AQ 
Co-Authors Bambang Yulistiyanto Dewi Retno Sari Saputro, Dewi Retno Djoko Legono Mardiyana Mardiyana