Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI
Liana, Yeni Rima
Unknown Affiliation
Astronomy Earth & Planetary Sciences Education Electrical & Electronics Engineering Materials Science & Nanotechnology Physics

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Study of Sun Protection Factor (SPF) Batik Textile Fabric on Solar Radiation in Pekalongan Liana, Yeni Rima; Baiti, Upik Nur; Fianti, Fianti
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) 2021: Articles in Press
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n1.p%p

Abstract

AbstractThe amount of sunscreen ability is determined through the value of a person's Sun Protection Factor (SPF) when under the sun without experiencing sunburn. This study aims to measure the intensity of sunlight received by batik textile fabrics and SPF measurements to determine the ability of these fabrics to protect sunlight radiation. The research was conducted at the Sorogenen area in Pekalongan City. Intensity data collection is done during sunny weather with temperatures of 300C - 320C from 10.00 to 14.00 WIB. The SPF value can be calculated by comparing the intensity of sunlight without a protective batik cloth with the intensity of sunlight with a protective cloth. The intensity of the average in the range of 10:00 to 14:00 WIB is 85.160 lux to 113.400 lux.  The  results obtained by fabric with a thickness of  2 mm have a SPF greater than fabric with a thickness of 1 mm. Cotton fabric has the ability to protect against sunlight better than satin and mori cloth. The largest SPF value is owned by a blue cotton cloth with a thickness of 2 mm of 36,06. While the smallest SPF value is owned by yellow cloth with a thickness of 1 mm of 5,24.
Internet of things based learning media with problem solving approach: Its effect on higher order thinking skills Liana, Yeni Rima; Linuwih, Suharto; Sulhadi, Sulhadi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 9 No 2 (2020): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v9i2.6313

Abstract

This research analyzed media feasibility and effectiveness based on IoT with a problem-solving approach that provides real experience to improve students' HOTS on thermodynamics law material. The Borg & Gall method's research development simplification had three stages: preliminary study, development, and field testing. The research subjects consisted of four lecturers as expert validators, two physics teachers, and three groups consisting of 108 in science XI grade students of Senior High School in Batang Regency, Central Java. Data collecting techniques were using questionnaires, observation, interviews, and written tests. The results of the validation of media experts and material experts were 3.84 and 3.75, respectively. The results of teacher responses and students' responses were 3.92 and 3.50 in the excellent category. The product's effective contribution to improving HOTS from the Multivariate Test analysis on GLM based on the partial eta squared value was 85.9%. The mean difference (MD) test results were -30.600 for the experimental group, while the control groups were -5.879 and -16.125, respectively. The more negative the Mean Difference (MD) score, the higher the students' HOTS. This shows that there is an experimental group giving improved scores better than the control group. This shows that there is an experimental group giving improved scores better than the control group. IoT is an opportunity for teachers to see technology as part of education because technology is the current millennial generation's cultural artifact.
Co-Authors Baiti, Upik Nur Fianti Fianti, Fianti Suharto Linuwih Sulhadi - Yulianti, Ian Ian Yulianto, Agus Agus