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All Journal AGRIKAN Jurnal Ilmiah Agribisnis dan Perikanan JTAM (Jurnal Teori dan Aplikasi Matematika) JUKESHUM: Jurnal Pengabdian Masyarakat MATHunesa: Jurnal Ilmiah Matematika Jurnal Pendidikan MIPA
Alfan, Aris
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Agriculture, Biological Sciences & Forestry Humanities Education Health Professions Mathematics Nursing Public Health Social Sciences

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Model Matematika Pertumbuhan Udang Vanami (Litopenaeus vannamei) dengan Pengaruh Pemanenan Parsial sebagai Dasar Penetapan Waktu Pemanenan Alfan, Aris; Resmi, Fitroh; Ifandi, Slamet
Agrikan: Jurnal Agribisnis Perikanan Vol 13, No 1 (2020)
Publisher : Sangia Research Media and Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29239/j.agrikan.13.1.75-82

Abstract

Pemanenan parsial pada budidaya udang vaname telah banyak dipraktikkan oleh para petani. Pemanenan parsial telah terbukti secara praktis dapat menghasilkan panen yang lebih banyak dibandingkan dengan pemanenan tunggal. Namun untuk menentukan waktu pemanenan parsial, para petani masih menggunakan perkiraan atau kebiasaan. Melalui penelitian ini akan dibuat suatu model pertumbuhan biomassa nonlinier dari budidaya udang vanami yang selanjutnya dapat digunakan untuk memprediksi waktu pemanenan yang menghasilkan biomassa maksimal. Dalam artikel ini digunakan data sekunder yang diolah menggunakan software MAPLE. Menggunakan persamaan pertumbuhan Von Bertalanffy, penelitian ini menunjukkan bahwa pemanan parsial mampu menunjukkan hasil 78% lebih banyak dibandingkan dengan sistem pemanenan tunggal. Model pertumbuhan biomassa yang telah dikonstruksi dipengaruhi oleh beberapa parameter yaitu A, M, L, W_, k, t_0
TRANSFORMASI WAVELET DISKRIT UNTUK DENOISING CITRA Umam, Ahmad Khairul; Ngastiti, Pukky Tetralian Bantining; Alfan, Aris; Shahadah, Zaqiyatus; Muamalah, Amanda Fatma
MATHunesa: Jurnal Ilmiah Matematika Vol. 12 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathunesa.v12n2.p374-380

Abstract

Nowadays, topic of wavelet has many applications including image denoising. Wavelet Transform is divided into discrete wavelet transform and continuous wavelet transform. Besides for image denoising, it can also useful for image compression and others. In this research is discussed about steps image denoising using wavelet. Wavelets that used are Haar, Daubechies, biorthogonal, symlets and coiflets wavelets for hard thresholding and soft thresholding. Program is made according to steps/algorithm that were created. Then, we compare original image and result of image denoising. In this research, we use grayscale test image Lena and cat with size pixels. We use peak signal to noise ratio (PSNR) to measure performance of the algorithm. We also compare computational time.
KAJIAN TEOREMA TITIK TETAP DI RUANG B-METRIK YANG DIPERPANJANG Umam, Ahmad Khairul; Alfan, Aris; Isro'il, Ahmad; Shahadah, Zaqiyatus; Muamalah, Amanda Fatma
MATHunesa: Jurnal Ilmiah Matematika Vol. 12 No. 2 (2024)
Publisher : Universitas Negeri Surabaya

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Abstract

This research gives more explaination in proof of theorem. The theorem is about existence and uniqueness a point is called fixed point in an extended b-metric space. Beside that, also we give example about extended b-metric space.
PERAMALAN TINGKAT PENGANGGURAN DI KOTA LAMONGAN MENGGUNAKAN METODE PEMULUSAN EKSPONENSIAL GANDA BROWN Rosidah, Kamilatur; alfan, Aris; Isro'il, Ahmad
MATHunesa: Jurnal Ilmiah Matematika Vol. 12 No. 3 (2024)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathunesa.v12n3.p569-578

Abstract

Forecasting is a method in statistics that aims to estimate or predict a condition in the future. The results of forecasting can be used as a reference or indicator in predicting conditions at the next time. This research was carried out by predicting the unemployment rate in the city of Lamongan for the next period, using the Brown double exponential smoothing method based on data from 2001 to 2023. The forecasting accuracy method used in forecasting unemployment is Mean Absolute Percentage Error (MAPE) for calculate the percentage error for each ? parameter value. From the research results, the best ? parameter value was obtained for forecasting the unemployment rate in the city of Lamongan in the future by obtaining the smallest MAPE value chosen by trial and error.
Using Augmented Reality-Based e-Book for Improving Students’ Learning Motivation in Analytical Geometry Course Ngastiti, Pukky Tetralian Bantining; Umam, Ahmad Khairul; Alfan, Aris
Jurnal Pendidikan MIPA Vol 23, No 2 (2022): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

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Abstract

In the development of science and technology in the world of education, students need to be introduced to a variety of varied learning media, one of which is the use of augmented reality-based e-books. The ability to learn analytic geometry requires systematic, logical and critical thinking that can be developed through learning. The purpose of this study is to test the increase in learning motivation using augmented reality based e-book media in analytic geometry course. The method in this study using ADDIE which consists of five stages which include analysis, design, development, implementation and evaluation. The result of the research is that the average result of the questionnaire given by students from various aspects of the assessment is 86%. Meanwhile, based on learning outcomes, there is a difference in learning outcomes between midterm exam score and the e-book score, which is 9.18 and based on the results of the analysis using SPSS on the t-test, it is found that tcount = 4.768 > ttable = 2.015. From these results, it can be concluded that augmented reality-based e-book media in analytic geometry courses can motivate students as a technology based learning medium for students of mathematics study program at Universitas Billfath. Keywords: augmented reality, geometry analytic, e-book DOI: http://dx.doi.org/10.23960/jpmipa/v23i2.pp486-495
Workshop Tata Kelola Desa Wisata Sebagai Langkah Awal Pengembangan Wisata Taman Mahoni Desa Kendal, Sekaran, Lamongan Alfan, Aris; Basith, Abdul; Priyasmika, Rendy
Jukeshum: Jurnal Pengabdian Masyarakat Vol. 4 No. 1 (2024): Edisi Januari 2024
Publisher : Universitas Haji Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51771/jukeshum.v4i1.743

Abstract

Desa Kendal memiliki taman Mahoni yang telah banyak dikunjungi warga dan siswa-siswa dari sekolah sekitar. Meskipun begitu, taman mahoni tersebut belum memiliki daya tarik khusus selain taman yang rindang oleh pohon mahoni dan pemandangan sungai disebelahnya. Workshop tata kelola Desa Wisata ini bertujuan untuk memberikan wawasan terkait memunculkan daya tarik khusus dan pendukungnya serta pengetahuan tentang pengelolaan dan pengembangan Desa Wisata. Kegiatan ini cukup relevan dilaksanakan mengingat belum ada dari pemerintah desa maupun pengurus taman mahoni yang pernah mengikuti kegiatan semacam ini.  Workshop tata kelola desa wisata mutlak diperlukan untuk mengoptimalkan potensi berupa Sumber Daya Alam (SDA), kebudayaan maupun Sumber Daya Manusia (SDM) yang dimiliki. Dengan metode ceramah pendekatan partisipatif, materi workshop tata kelola desa wisata ini disampaikan oleh kabid pengembangan pariwisata dinas pariwisata dan kebudayaan kabupaten Lamongan. Dari hasil wawancara dengan Kepala Desa dan Direktur BUMDES yang mengikuti kegiatan tersebut dapat disimpulkan bahwa melalui workshop ini, perwakilan masyarakat, pengurus BUMDES dan pemerintah desa memiliki gambaran yang jelas mengenai langkah-langkah merintis, mengelola serta mengembangkan Desa Wisata.
Basic Reproduction Number of Tuberculosis Spread Model in Lamongan With DOTS Strategy Alfan, Aris; Resmi, Fitroh; Dewi, Nihaya Alivia Coraima
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 5, No 1 (2021): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v5i1.3696

Abstract

Tuberculosis (TB) will be a serious threat if not handled quickly and appropriately. The relatively long treatment in time and the high risk of death is a challenge in controlling the spread of this disease. The DOTS (Directly Observed Treatment Short-course) strategy is considered capable of controlling the spread of TB because of the high success rate, reaching 91%. The mathematical model of the spread of TB has been widely studied to determine the potential for the spread of this disease in an area. The purpose of this study is to build a model of tuberculosis spread in Lamongan to determine the rate of its spread and to predict whether it will be endemic or not. Using disease spread mathematical model type SEITR, this research has examined based on 2018 and 2019 data from the Lamongan health office then simulates the result. The research begins with the construction of the model followed by a stability analysis of the model by determining the basic reproduction number ( ), which is simulated after the parameter approach was carried out. From the simulation results, the result shows that   means that TB will not endemic in Lamongan. Besides, the results of the effect of parameter ω on I(t) were obtained, which concluded that seeking and treating active TB alone would only reduce infected individuals but not reduce the length of time TB spread. Identification of the effect of parameter φ on I(t) has also been carried out which results in the conclusion that more treatment for susceptible individuals, in addition to reducing the number of infected individuals, will also reduce the length of time TB spreads in that area. This result will be a good suggestion for the government to deal faster with tuberculosis transmission.
Co-Authors Abdul Basith Dewi, Nihaya Alivia Coraima Isro'il, Ahmad Muamalah, Amanda Fatma Priyasmika, Rendy Pukky Tetralian Bantining Ngastiti Resmi, Fitroh Rohmah, Rosyidah Syafaatur Rosidah, Kamilatur Shahadah, Zaqiyatus Slamet Ifandi, Slamet