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All Journal Jurnal Rekayasa Sipil dan Desain Jurnal Sains Student Research
Mariyanto Mariyanto
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Civil Engineering, Building, Construction & Architecture Other

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Comparative Analysis of Tidal Data from Forecasting Results with Measured Tide Data (Meneng Tidal Station Case Study) Bagus Mustofa Purna; Ahmad Zakaria; Mariyanto Mariyanto
Jurnal Rekayasa Sipil dan Desain Vol 9, No 2 (2021): Edisi Juni 2021
Publisher : Jurnal Rekayasa Sipil dan Desain

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AbstractThis research to find the similarity of the tidal characteristics of sea water, especially in the sea waters in the Meneng station area, where the data used is both hourly tide data from tide data from the website http: //tides.big.go.id and field measured tidal data for a period of 5 years, from 1988 to 1992 at the Meneng tidal station, East Java, Indonesia. The data used in this research have a minimum data length of 720 hours or 30 days, using 9 tidal harmonic components using the least squares method and then converted into the ANFOR program (Zakaria, 2005), this program can produce a periodic tidal data model. including the amplitude value that can be used to see a tidal characteristic of sea water. After the tidal data is modeled and analyzed, the correlation coefficient is generated. From the results of this study, it can be concluded that the component results obtained from the hourly tide data from the website http://tides.big.go.id and field measured data have something in common with the generated tidal components. The average correlation coefficient of the two data is 0.8010 and is included in the very good category. Keywords: tides, ANFOR, correlation coefficient
Upaya Meningkatkan Keterampilan Permainan Bola Voli Menggunakan Alat Bantu Pembelajaran di Kelas X SMKN 2 Surakarta Yoga Yudha Perwira; Yantri Ayu Nur Widayat; Dony Alif Utomo; Dandi Mahitsa; Manshuralhudlori Manshuralhudlori; Andi Mustofa; Mariyanto Mariyanto
JOURNAL SAINS STUDENT RESEARCH Vol. 2 No. 3 (2024): Juni : Jurnal Sains Student Research
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jssr.v2i3.1717

Abstract

This study aims at exploring the enhancement of volleyball playing skills with the use of learning aids which is conducted in SMKN 2 Surakarta. This study employs Classroom Action Research (CAR) within 2 cycles which comprise of 4 stages for each cycle. The stages are planning, Action (Implementation), observation, and reflection. This study involves 36 students from tenth grade of PPLG A of SMKN 2 Surakarta, consisting of 28 male and 8 female learners. The data sources in this study came from the students, the researcher, and the teacher playing a role as a collaborator. Data collection techniques included a test and an observation. Data validity was ensured using data triangulation techniques. Data analysis employed qualitative descriptive techniques based on percentage qualitative analysis. The analysis results indicated that there is an enhancement in volleyball playing skills in the first cycle, with a completion rate of 58.3%, or 21 out of 36 students. The enhancement continued in the second cycle, with a completion rate of 86.1%, or 31 students meeting the proficiency criteria with a minimum mastery level of 75, while 5 students did not meet the criteria. Based on the results, it is concluded that the use of learning aids can significantly enhance volleyball playing skills in the tenth-grade learners of PPLG A at SMKN 2 Surakarta
Co-Authors Ahmad Zakaria Andi Mustofa Bagus Mustofa Purna Dandi Mahitsa Dony Alif Utomo Manshuralhudlori, Manshuralhudlori Yantri Ayu Nur Widayat Yoga Yudha Perwira