Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal PRISMA Jurnal Riset Mahasiswa Matematika
Janah, Miftakul
Unknown Affiliation
Mathematics Social Sciences

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

Found 2 Documents
Search

 1 
Model Matematika Vibrasi Dawai Dikenai Massa yang Berjalan di Atasnya Janah, Miftakul; Kusumastuti, Ari
Jurnal Riset Mahasiswa Matematika Vol 1, No 4 (2022): Jurnal Riset Mahasiswa Matematika
Publisher : Mathematics Department, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/jrmm.v1i4.14446

Abstract

This study discusses the formulation of a mathematical model of string vibration when subjected to mass. There are two variables resulting from the formulation of the model, namely the deflection of the string  and the angle of the string . The deflection of the string  and the angle of the string .  are affected by the friction force, tension force, spring force, and gravity. Then the identification of the working potential and kinetic energy is carried out to obtain the Lagrange equation of the deflection and angle of the string. Based on the formulation steps that have been described, the mathematical model obtained is an ordinary differential equation of the order of one to the power of two. Furthermore, the model is calculated numerically by assigning values to the parameters involved. So it is known that with a string mass of 0.005 kg, 0.05 kg, 0.5 kg, a string mass of 0.075 kg, and an object radius of 0.07 m, it is known that the deflection of the string  is greater if the object's mass is greater. While the angle of the string is in a state of equilibrium before being subjected to a mass and experiencing vibration after being subjected to a mass.
Analysis of Geometry Concept Sequence in Student Textbooks Based on Van Hiele's Theory Janah, Miftakul; Rahardi, Rustanto; Rahardjo, Swasono
PRISMA Vol 13, No 2 (2024): PRISMA
Publisher : Universitas Suryakancana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35194/jp.v13i2.4033

Abstract

This study aims to analyze the order of textbooks based on van Hiele's theory. The research approach used is descriptive qualitative. The method used is content analysis or content study. The data subject in this research is junior high school mathematics textbook grade VIII curriculum 2013. The research was conducted by looking at the suitability of the characteristics at each van Hiele level with the textbook. Then if a discrepancy is found in the analysis, a solution is given according tZo the researcher's skills. The results showed that in general all the material "Surface Area of Cuboid and Cubes" in the Mathematics textbook of junior high school grade VIII curriculum 2013 material on the concept of surface area of cuboid and cubes has not fulfilled the order based on van Hiele's theory as a whole, namely there is an incomplete explanation in each level. The level of sequence analyzed in this textbook reaches level 2 (Ordering). So it is recommended for future research that the results of this analysis be used as a reference in teaching geometry material to students.
Co-Authors Ari Kusumastuti Rustanto Rahardi Swasono Rahardjo