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All Journal Jurnal Pendidikan Fisika JURNAL INSTEK (Informatika Sains dan Teknologi) KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Fisitek : Jurnal Ilmu Fisika dan Teknologi Jurnal Fisika dan Terapannya
HERNAWATI HERNAWATI
UIN Alauddin Makassar
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Physics

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APLIKASI JARINGAN SYARAF TIRUAN PADA PENGENALAN POLA LARIK SENSOR GAS (IDENTIFIKASI KEASLIAN MINYAK ATSIRI) FITRIYANTI FITRIYANTI; NURUL FUADI; HERNAWATI HERNAWATI
Jurnal INSTEK (Informatika Sains dan Teknologi) Vol 4 No 2 (2019)
Publisher : Department of informatics engineering Faculty of Science and Technology Universitas Islam Negeri Alauddin, Makassar, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2440.974 KB) | DOI: 10.24252/instek.v4i2.11585

Abstract

Penelitian ini dilakukan untuk mempelajari Jaringan Syaraf tiruan (JST) dengan metode Backpropagation. Data yang digunakan adalah data sekunder yang berupa senyawa volatile minyak atsiri dengan berbagai kosentrasi, yang merupakan hasil dari keluaran larik sensor gas. Penelitian dilakukan dengan mencari arsitektur dari Backpropagation yang terbaik. Hasil pengujian yang terbaik yaitu menggunakan fungsi aktivasi Sigmoid Bipolar, laju pembelajaran (learning rate) = 0.03, menggunakan 5 hidden layer dengan fungsi pelatihan Gradient descent, untuk bobot dan bias digunakan nilai acak. Iterasi terhenti saat sistem JST telah memenuhi error terkecil yaitu sebanyak 1000 iterasi. Tingkat akurasi dari JST Backpropagation yang telah dibangun yaitu sebesar 91.76% dalam mengenali data latih, dan mengidentifikasi setiap data uji dengan tingkat akurasi rata-rata sebesar 97.86% Kata kunci : , Backpropagation, Jaringan Syaraf Tiruan, Sensor Gas
Karakteristik Sifat Mekanik Wadah Makanan dari Limbah Daun Pisang Kering Zilmi Azyurah Rahman; Hernawati Hernawati; Ayusari Wahyuni
KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 6 No 1 (2021): KONSTAN (Jurnal Fisika dan Pendidikan Fisika)
Publisher : Universitas Islam Negeri (UIN) Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/konstan.v6i1.64

Abstract

The objective of this research is to determine the physical quality of food media, consisting of small plate, large plate and small bowl. The method used of this research is testing the water absorption and resistance of the food media’s temperature. The process of making a food media using a stainless steel mold which is heated using a food thermometer with 100 and a load of 10 kg as a pressure, then it is printed for 5 minutes with 4 times taking the data for each food media. There are two testing of food media, the first test is water absorption with 29.5 for 125 miles into a small plate, 200 miles into a small bowl and 250 miles into a large plate for 60 minutes, the average value of the water absorption test for the Non-woven food media consists of three forms food medias have 0.00 as the same result, meanwhile woven media such as small plate has 65.00 , large plate has 44.83 and small bowl has 66.68 . Second test is resistance of the food medias based on temperature parameters. The temperatures used were 40, 60, 80 for non-woven food media consists of three forms food media which had few change after drying, while for woven food media consists three forms of food media had the same results, that is seepage (leaking) in the food media.
PRELIMINARY STUDY OF WASTE UTILIZATION OF DRIED BANANA LEAVES AS FOOD CONTAINER WITH VARIOUS TYPES OF ADHESIVE Aminah Aminah; Hernawati Hernawati; ayusari wahyuni
FISITEK: Jurnal Ilmu Fisika dan Teknologi Vol 6, No 1 (2022)
Publisher : Universitas Islam Negeri Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30821/fisitekfisitek.v6i1.8684

Abstract

Research has been conducted entitled utilization of dried banana leaf waste as a food container with various types of adhesives. This study aims to find out the physic quality of food containers. The research method carried out was the method of analysis of food containers by testing the absorption of water with normal temperature of water and silenced for 60 minutes and for the resistance test of the container based on temperature parameters of 40ºC, 60ºC and 80ºC which in the test was silenced for 30 minutes. Both tests were given a water volume of 125 ml. From the test results of dry banana leaf containers with adhesive types of tapioca flour and sago flour has changed but can still be used and jackfruit rubber adhesive does not undergo a change in shape so that it can be used as a food container as well as synthesis adhesives do not undergo a change in shape but in its testing produces a pungent smell meaning food containers from synthetic adhesives can not be used as food containers. 
Studi Karakterisasi XRD Pada Material CNT Melalui Variasi Tegangan Hot Wire Kurniati Abidin; Rahmaniah Ilham; Hernawati Hernawati; Sefrilita R.A.R; Dirwan Dirwan
JPF (Jurnal Pendidikan Fisika) Universitas Islam Negeri Alauddin Makassar Vol 11 No 1 (2023): Maret
Publisher : Pendidikan Fisika UIN Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jpf.v11i1.35554

Abstract

ANALISIS NILAI ABSORBANSI UNTUK MENENTUKAN KADAR FLAVONOID DAUN JARAK MERAH (JATROPHA GOSSYPIFOLIA L.) MENGGUNAKAN SPEKTROFOTOMETER UV-VIS Ahriani Ahriani; Sri Zelviani; Hernawati Hernawati; Fitriyanti Fitriyanti
JFT : Jurnal Fisika dan Terapannya Vol 8 No 2 (2021): DESEMBER
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jft.v8i2.23379

Abstract

Research on Absorbance Value Analysis on Determination of Flavonoid Levels in Red Jatropha Leaves (Jatropha Gossypifolia L.) using UV-Vis Spectrophotometer has been conducted. This study aimed to determine the absorbance of red jatropha (Jatropha Gossypifolia L.) leaves on young and old leaves and to determine the flavonoid content of red jatropha (Jatropha Gossypifolia L.) leaves on young and old leaves. The sample used in this study was 200 g of red jatropha leaf powder (Jatropha Gossypifolia L.) with the addition of 2000 ml of 70% ethanol as solvent in a ratio of 1:10. The extraction method used in this study is the MAE (Microwave Assisted Extraction) method to measure the absorbance value of the sample at a wavelength of 436 nm using a UV-Vis spectrophotometer. The results showed that the absorbance value of red jatropha (Jatropha Gossypifolia L.) leaves on young leaves was smaller than on old leaves. Where the absorbance value in young leaves is 0.355 while the absorbance value in old leaves is 0.616. The resulting absorbance value has complied with Lambert-Beer's law (0.2 ≤ A < 0.8). The flavonoid content of red jatropha (Jatropha Gossypifolia L.) leaves in young leaves was lower than in old leaves. Where the levels of flavonoids in young leaves is 2.71% while the levels of flavonoids in old leaves is 4.90%. This shows that the greater the absorbance value, the greater the flavonoid content produced.
Co-Authors Ahriani Ahriani Aminah Aminah ayusari wahyuni Ayusari Wahyuni Dirwan Dirwan FITRIYANTI FITRIYANTI Kurniati Abidin Nurul Fuadi Rahmaniah Ilham Rani, Sefrilita Risqi Adikaning Sri Zelviani Zilmi Azyurah Rahman