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Contact Name
Dewi Muliyati
Contact Email
dmuliyati@unj.ac.id
Phone
-
Journal Mail Official
snf@unj.ac.id
Editorial Address
Fisika FMIPA Universitas Negeri Jakarta GHA Lt.5 Jl Rawamangun Muka No.1
Location
Kota adm. jakarta timur,
Dki jakarta
INDONESIA
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
ISSN : 23021829     EISSN : 24769398     DOI : https://doi.org/10.21009/03
Focus and Scope: Physics education Physics Instrumentation and Computation Material Physics Medical Physics and Biophysics Physics of Earth and Space Physics Theory, Particle, and Nuclear Environmental Physics and Renewable Energy
Articles 976 Documents
PROFIL HASIL BELAJAR EKSPERIMEN RANGKAIAN RESISTOR MAHASISWA POLITEKNIK I Gede Rasagama
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.421 KB) | DOI: 10.21009/0305010404

Abstract

The study aim is to determine the profile of learning outcomes of resistor circuits experiment (RCE), before and after reconditioning learning facilities (job-sheet). Component of learning outcomes of type I includes the ability to accomplish a task preliminary, observational data and calculations, questions answer, sources of error, conclusions, and a bibliography, before and after reconditioning job-sheet. Component of learning outcomes of type II includes increased understanding of resistor circuits concepts (N-Gain) and their retention. The concept includes the experiment goals, KCL, KVL, Ohm's Law, and the nature of circuits. The subjects were students of Class I Prodi Energy Conservation D-IV POLBAN. The research activities carried out consist of in five phases: preparation, data collecting, data processing and analysing, discussion and formulation of conclusions. The research result shows RCE before reconditioning job-sheets that gave the highest learning outcomes type I on observational data and calculations, followed by preliminary tasks, questions answer, a bibliography, conclusions, and the lowest was the source of error. After reconditioning job-sheet, the highest of learning outcomes type I happened at observational data and calculations, followed by preliminary tasks, question answers, sources of error, a bibliography, and the lowest is the conclusion. The overall learning outcomes of type I, after reconditioning job-sheet, is better than before reconditioning job-sheet, with N-Gain is 12%. N-Gain of learning outcomes of type II before reconditioning job-sheet, is the highest on Ohm's Law, the nature of circuit, KVL, KCL, and the lowest is on experimental purposes. N-Gain of learning outcomes of type II after reconditioning job-sheet, is the highest on the nature of circuit, the experiment purpose, Ohm's Law, KCL and the lowest is on the KVL. The overall N-Gain of learning outcomes of type II, before reconditioning job-sheet of 27% and after reconditioning job-sheet of 25%. Retention of learning outcomes of type I has the same pattern as type II, both before and after reconditioning job-sheet, which is likely to increase. Keywords: Profile of learning outcomes, resistor circuits experiment, polytechnic students.
KETERPAKAIAN KONSEP HUKUM BERNOULLI DAN DESAIN EKSPERIMENNYA DI DALAM FISIKA TERAPAN PRODI REKAYASA POLBAN I Gede Rasagama; Ratu Fenny Muldiani; Kunlestiowati Hadiningrum
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (794.696 KB) | DOI: 10.21009/0305010405

Abstract

The study aim is to determine the usefulness of the concept and design of experiments Bernoulli's Law in Proficiency Basic Courses (PBC) of Applied Physics at the Polytechnic. The place of research is in POLBAN. The study begins review of PBC syllabus of Applied Physics and Prodi Proficiency Courses (PPC) syllabus at the Department of Engineering, who gets service PBC of Applied Physics. Continued with questionnaire to lecturers PPC is 3 DIII and 3 DIV. To deepen the contents of the questionnaire, we conducted interviews to informants. Data were analyzed to measure: usefulness of Bernoulli's Law concepts in the PBC of applied physics and PPC syllabus, PPC lecturer opinion about needs of Bernoulli's Law concept in PBC of Applied Physics, the necessity of deepening through experiments and experimental design characteristics. The study results showed 11 prodi of 24 prodi in engineering majors, inserts the concept of Bernoulli's Law into the applied physics syllabus, all research subjects insert the concept of Bernoulli's Law in the one of PPC syllabus, overall interviewees believe it is needed to be taught the concept of Bernoulli's Law in PBC of Applied Physics, and 67% informants believe it is necessary for deepening through experimentation. Characteristic of the expected experimental design is capable of generating student competence in measuring the speed and pressure of the flow in the pipes of various sizes. The ideal approach, requirement, and limits of the enforceability of Bernoulli's Law can be used as the basis of design of experiments. It appears that the usefulness category of Bernoulli's Law concept for students and polytechnic institutions is high Keywords: Bernoulli’s Law, experimental design, polytechnics students applied physics.
ANALISIS KEMAMPUAN PEMAHAMAN KONSEP SISWA MELALUI PENERAPAN ASESMEN PORTOFOLIO PADA PEMBELAJARAN FISIKA Kitri Mipa Utami; Parsaroan Siahaan; Purwanto Purwanto
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (577.297 KB) | DOI: 10.21009/0305010406

Abstract

Portfolio assessment is one of a kind that being advised by 2013 curriculum. It is included in alternative assessing which can improve students’ comprehension based on the facts (Gunay, A. 2014). However, the portfolio assessment is still rarely being used by teachers since they think that it is hard to do. This research aims to analyse students’ abilities in cognitive field of Understanding towards mechanical fluid subject. This Understanding covers seven cognitive process that occur in taxonomy Bloom’s-revision which are: interpreting, giving example, summarizing, concluding, comparing and explaining. The participants of this research are students from second grade in a high school that located in Bandung which used 2013 curriculum. The design of this research is using Nonequivalen Control Group Design. The result of this research shows that there is a significant difference towards the improvement of concept comprehension towards mechanical fluid subject between experimental class and control class. Keywords: Portfolio Assessment, Understanding, Mechanical Fluid.
PROFIL KEMAMPUAN MEMAHAMI MATERI DINAMIKA PARTIKEL PADA SISWA SMA KELAS X Novitasari Novitasari
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (467.52 KB) | DOI: 10.21009/0305010407

Abstract

This study aimed to determine profile of understand for Particle Dynamics on senior high school students of Class X. The population in this study was student of Class X from one of senior high schools in Bandung with nine classes in it. Based on the population, sample taken three classes with using purposive sampling technique. Understand was measured is fundamental skill in dimension of cognitive processes in the Revised Bloom's Taxonomy. Material in this study consist of the kinds of force and Newton Laws. Five cognitive processes was studied in understand. There were interpreting, exemplifying, inferring, comparing, and explaining. The results of study revealed that the percentage of students who interpreting was 56.2%, exemplifying was of 31.5%, inferring was 53.7%, comparing was 48.6%, and explaining was 65.67%. Keywords:Profile, Understand, Particle Dynamics.
ANALISIS STURKTUR KOGNITIF MAHASISWA PENDIDIKAN FISIKA PADA KONSEP STRUKTUR KRISTAL Marungkil Pasaribu
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (311.819 KB) | DOI: 10.21009/0305010408

Abstract

This research was a qualitative descriptive study aimed to describe the cognitive structure of physics education students were registered in Introduction to Solid State Physics course. Subjects numbered 38 people. Instrument used to determine the cognitive structure of students is a Word association test such as lattice, bases, crystal structure, unit cell, the symmetry of crystals, simple cubic (SC), body centered cubic (BCC), face centered cubic (FCC) and the Index Miller. The result showed that the cognitive structure of students on keywords simple cubic (SC), body centered cubic (BCC), and a face centered cubic (FCC) is more complete than other keywords. Factors affecting less complete cognitive structures among other students' prior knowledge inadequate and difficult to describe the words contained in keywords. Keywords: cognivtive structure, analysis, crystal structure.
ANALISIS KESULITAN MAHASISWA CALON GURU FISIKA DALAM MEMAHAMI KONSEP GERAK PARABOLA Saeful Karim; Duden Saepuzaman
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (480.695 KB) | DOI: 10.21009/0305010409

Abstract

This research is motivated by the achievement of student learning outcomes Physics 1 were not as expected. Further analysis of the results of student answers, found one of the concepts are still low achievement of learning outcomes is the projectile motion. Projectile Motion is part of the topic of the two-dimensional motion. The purpose of this study is to investigate and uncover the difficulties experienced by students on the concept of a projectile motion in order to plan appropriate learning program. The method used is descriptive analysis with a sample of 42 students who take the Basic Physics Course I on LPTK in West Java. Collecting data form of essai test. Based on the test results, it is known that students have difficulty following. First, drawing the vector component in the direction x (horizontal) and y (vertical). Second, distinguish the velocity vector, the vector component of velocity, the velocity vector component in the x and y directions. Third, focus on memorizing formulas bullet time taken for half a parabolic trajectory, maximum of height, maximum of distance. Fourth, always assumed final velocity moving object parabola when it hits the ground is always zero. Fifth, the velocity to zero at the top (when only the speed in the vertical direction is zero). Sixth, the acceleration is owned by the object in the x and y directions. Seventh, found some students use the law of sines cosines triangle on the determination of the distance / high and reverse (ideally the determination of the distance / high based on the velocity information). Keywords: difficulties leraning , preservice physics teacher , projectile motion.
PENGENDALIAN GERAK MOBILE ROBOT BERBASIS BCI (BRAIN COMPUTER INTERFACE) Adbizar Asmon Rizal; Sastra Kusuma Wijaya
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (749.595 KB) | DOI: 10.21009/0305020101

Abstract

Has long been known that neurons in the human brain produces electrical waves that can be measured, these waves obtained by the Emotiv EPOC + to get a signal Electroencephalography (EEG) of 14 pieces of electrodes distributed along the human scalp. Brain Computer Interface (BCI) is a system that allows the control hardware using human brain signals using Electroencephalography (EEG). Brain Computer Interface can be used to control a variety of microcontroller-based devices such as mobile robot control, a robot arm, and wheelchairs to help disabled people. In this study, we developed a system that allows humans to control the direction of motion of the mobile robot wave Electroencephalography (EEG). The system consists of an Emotiv EPOC + Neuroheadset, computers, and mobile robots. Cognitive Suite provided by Emotiv is responsible for generating the necessary control measures to make the mobile robot to perform three different orders: move forward, turn right, and turn left. The experimental results show that the mobile robot can be controlled in real-time based on physiological changes the subject. Keywords: Brain Computer Interface, Emotiv EPOC+, Mobile Robot, Microcontroller.
KAJIAN HUBUNGAN KONDUKTIVITAS LISTRIK DENGAN KONSENTRASI PADATAN TERLARUT PADA AIR PERMUKAAN Fadhilah Irwan; Afdal Afdal; Indah Arlindia
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (411.182 KB) | DOI: 10.21009/0305020102

Abstract

A study to determine relationship between the electrical conductivity and total dissolved solid (TDS) in three types of surface water (sea, river and lake water) has been conducted. Sea water samples were taken on Padang beach, river water samples were taken on Batang Arau river and lake water samples on Diatas lake of Alahan Panjang. At each location, water samples were taken at six points at every 500 m distance. Sea water samples were taken at three points near the tourist attractions and at three points near the seaside. River water samples were taken at two points at upstream, midstream and downstream of the river respectively. Lake water samples were taken from the lake sides towards the middle of the lake. TDS value was determined by using gravimetry method and electrical conductivity values measured by conductivity meter. The average value of TDS of sea water is 23886.7 mg/l, the river water is 1873.3 mg/l and the lake water is 546.7 mg/l. The average value of the electrical conductivity of sea water is 177.9 μS/cm, the river water is 139.1 μS/cm and the lake water is 80.6 μS/cm. TDS relationship with the electrical conductivity of the sea water can not be determined because of TDS values are oscillated with electrical conductivity. TDS relationship with the electrical conductivity is linear at small electrical conductivity value and it is not linear at high electrical conductivity value for the water samples of the river and the lake. The best model for the relationship between TDS and the electrical conductivity of the river and lake Diatas water are the second degree polynomial models with correlation coefficient of 0.9506 and 0.9896 respectively. TDS and electrical conductivity values of Maninjau water lake have linier correlation coefficient betweeen 0.0664 and 0.4972 but still show linear trends. Keywords: electrical conductivity, gravimetry, temperature, Total Dissolved Solid (TDS).
ANALISIS PERBANDINGAN SUARA NAFAS NORMAL DAN PENDERITA ASMA DENGAN METODE FAST FOURIER TRANSFORM A. L. Nugrahadi; M. Delina; R. Fahdiran
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (591.184 KB) | DOI: 10.21009/0305020103

Abstract

Pendeteksian suara pernafasan dilakukan oleh dokter menggunakan stetoskop dimana tingkat keakuratannya bergantung pada kemampuan dokter tersebut berupa pendengaran, pengalaman, dan pengenalan pola suara pernafasan. Untuk mendapatkan data yang lebih akurat kami membuat sebuah perangkat lunak pengolahan sinyal suara untuk mendeteksi suara nafas normal dan abnormal (penderita asma berupa wheezes) berdasarkan nilai frekuensinya dengan menggunakan metode Fast Fourier Transform (FFT). Perangkat lunak yang telah dibuat menyajikan data dalam bentuk grafik frekuensi terhadap intersitas suara per 50 ms. Dari hasil pengujian didapatkan bahwa frekuensi suara nafas normal memiliki frekuensi dominan (193.165±84.194) Hz. Sedangkan suara nafas penderita asma memiliki frekuensi (303.500±107.219) Hz. Kata Kunci: sinyal suara, frekuensi, Fast Fourier Transform.
PENGUKURAN LEVEL KETINGGIAN AIR MENGGUNAKAN FIBER BRAGG GRATING (FBG) BERBASIS MODULASI INTENSITAS LASER DIODA Andi Setiono; Ratna Yulia Sari
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (696.156 KB) | DOI: 10.21009/0305020104

Abstract

Measurement of water level use Fiber Bragg Grating (FBG) was studied. The measurement was done by straining FBG use cantilever which connected to the cork. By straining of the FBG, grating period will have changed and further affect the transmission response of the propagated light. In this study, the water levels were measured by detect intensity of transmitted laser diode. Wavelength of laser diode and FBG Bragg wavelength were 1553.96 nm and 1554 nm, respectively. The results showed that there is a linear relationship between intensity of transmitted laser diode with the water levels. Sensitivity and resolution were 0.69 dBm/ mm and 1 mm, respectively. Keywords: Fiber bragg grating, water level sensor, modulation of laser diode intensity.

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