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All Journal BIMASTER Epsilon: Jurnal Matematika Murni dan Terapan CAUCHY: Jurnal Matematika Murni dan Aplikasi Abdimas JURNAL DERIVAT: JURNAL MATEMATIKA DAN PENDIDIKAN MATEMATIKA Edumatsains AKSIOMA BAREKENG: Jurnal Ilmu Matematika dan Terapan JTAM (Jurnal Teori dan Aplikasi Matematika) GERVASI: Jurnal Pengabdian kepada Masyarakat Jurnal Matematika UNAND Technologia: Jurnal Ilmiah Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal Pengabdian kepada Masyarakat Nusantara Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi Jurnal Abdimas Bina Bangsa Paulus Civil Engineering Journal Arus Jurnal Psikologi dan Pendidikan Journal of Hospital Administration and Management (JHAM) Jurnal Matematika Integratif Prosiding Seminar Nasional Inovasi Teknologi Terapan Jurnal Inovasi Teknologi Terapan Patisambhida : Jurnal Pemikiran Buddha dan Filsafat Agama Emitor: Jurnal Teknik Elektro
Yudhi
Universitas Tanjungpura
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CUBIC SPLINE INTERPOLATION TO APPROXIMATE SEA DEPTH BETWEEN TELUK SUAK AND LEMUKUTAN ISLAND Hariski, Muhammad; Kusumastuti, Nilamsari; Yudhi, Yudhi
EPSILON: JURNAL MATEMATIKA MURNI DAN TERAPAN (EPSILON: JOURNAL OF PURE AND APPLIED MATHEMATICS) Vol 18, No 1 (2024)
Publisher : Mathematics Study Program, Faculty of Mathematics and Natural Sciences, Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/epsilon.v18i1.10813

Abstract

Interpolation is a technique that determines the value of a function at a point located between several known data points. Various interpolation methods include polynomial interpolation, Lagrange interpolation, Newton interpolation, and spline interpolation. Cubic spline interpolation aims to produce accurate approximations characterized by minimal oscillations in the resulting curve. This research uses the cubic spline interpolation method to estimate the sea depth in the waters between Teluk Suak and Pulau Lemukutan. The sea depth measurements are conducted to acquire information regarding the underwater topography. We collected data points using remote sensing techniques through Google Earth Pro. These points are selected based on the sea depth profile considerations, including steep areas and points of depth variation to maintain the seabed conditions within the interpolation curve, with a total of 31 data points. Subsequently, we subjected these data points to the conditions necessary for cubic spline interpolation, resulting in a system of 120 linear equations. After solving this system of linear equations, we obtained cubic spline interpolation polynomials for each subinterval and then estimated the sea depth at other points. Based on the cubic spline interpolation results, we achieved a Mean Average Percentage Error (MAPE) of 1.58%, indicating a highly accurate interpolation outcome.
Meir Keeler's Fixed-Point Theorem in Complex-Valued Modular Metric Space Kiftiah, Mariatul; Yudhi, Yudhi
Euler : Jurnal Ilmiah Matematika, Sains dan Teknologi EULER: Volume 12 Issue 1 June 2024
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/euler.v12i1.25126

Abstract

In this paper, we introduce the notion of Meir-Keeler contraction mapping, which is defined in complex-valued modular metric space. Some properties of sequences in this space, which are convergence, Cauchyness and completeness, are used to prove the fixed-point theorem under this mapping. Additionally, the Delta_2-type condition is also defined as the sufficient condition in order to have a unique fixed point.
TEMPAT PENYIMPAN DOKUMEN BERBASIS BOT TELEGRAM Windarti, Ayu; Ananda Sapitri, Anjelalica; Saputra, Zanu; Yudhi
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 4 (2024): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Document storage often uses paper or plastic folders that are less secure, so a better security system is needed. This research designed a document security system using RFID sensors and Telegram notifications. The system uses the E-KTP as a tag to open the doorlock solenoid, with the NodeMCU ESP8266 as a means of communication to Telegram. A notification will be sent if there is a forced access attempt. If the E-KTP is compliant, the door will open and the green indicator will light up, if it is not appropriate, access will be denied, the red indicator will light up, and a notification will be sent to Telegram. The results of the study show that the system works well for Internet of Things-based monitoring with a distance of 3cm between RFID Reader and ± card. The Internet Of Things-based monitoring process on Telegram bots equipped with notifications through smartphones is running well.
RANCANG BANGUN ALAT PELIPAT DAN PEWANGI BAJU OTOMATIS Wahyu Fahrizal; Arin Yerliansyah; Novitasari, Novitasari; Yudhi
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 4 (2024): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Design a multifunction tool that includes a clothes folder and freshener. Additional features of this design are clothing sterilization with UV lamps and automatic calculations. This design aims to smooth and increase efficiency in the clothing care process. This tool is designed to provide a comprehensive solution for caring for everyday clothes quickly and effectively. This tool combines several main functions: first, an automatic folder that uses a mechanical system and sensors to precisely fold clothes of various types and sizes. Second, a fragrance feature that sprays a fresh aroma onto clothes after being folded, increasing freshness and comfort when used. Third, the sterilization system uses UV lights to kill germs and microorganisms that may be on clothes, maintaining user cleanliness and health. Finally, the automatic calculation feature controls the number of clothes processed and provides reports automatically to users. The tool is equipped with a smart user interface, allowing users to easily manage and monitor the clothing care process. With this multifunctional tool, it is hoped that it can reduce the time and energy needed to care for clothes and increase comfort and cleanliness for users. The results obtained are that design tools can provide tidiness, cleanliness and protect against bacteria. The range of folding clothes using the tool is 5 minutes.
RANCANG BANGUN PROTOTIPE LEMARI PENGERING PAKAIAN OTOMATIS BERBASIS IOT (INTERNET OF THINGS) Iqbal, Muhammad; Tri Desrehan, Sagit; Febriansyah, Aan; Yudhi
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 4 (2024): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

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Abstract

Drying is a process of simultaneous transfer of heat and water vapor that requires heat energy to evaporate the water content contained in the material being dried by a drying medium that is usually heat, at this time the development of modern technology and automation of electronic equipment has changed the way work is done, including clothes dryers. This tool is able to dry various types of clothes such as t-shirts, cotton, jeans, and jackets, which are commonly used daily. The author developed an IoT-based automatic clothes dryer using electrical energy. This tool works with a heating system that comes from a heater that is spread by an AC fan so that it is evenly distributed throughout the closet. And the IoT functions as monitoring conditions in the closets such as temperature, humidity and time, Drying can be done independent of the weather and following a predetermined time and temperature, with an optimal room humidity levels: 75% t-shirt, 74% cotton, 77% jeans, and 77% jacket.
OPTIMASI TRANSPORTASI TIDAK SEIMBANG MENGGUNAKAN METODE LOWEST SUPPLY LOWEST COST (LSLC) DAN STEPPING STONE Saputra, Irpan; Pasaribu, Meliana; Yudhi, Yudhi
BIMASTER : Buletin Ilmiah Matematika, Statistika dan Terapannya Vol 13, No 5 (2024): Bimaster : Buletin Ilmiah Matematika, Statistika dan Terapannya
Publisher : FMIPA Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/bbimst.v13i5.81853

Abstract

Masalah transportasi berhubungan dengan pendistribusian barang dari beberapa sumber ke beberapa tujuan. Masalah transportasi tidak seimbang adalah masalah transportasi saat jumlah persediaan tidak sebanding dengan banyaknya permintaan; dengan kata lain, jumlah persediaan yang tersedia lebih besar atau lebih kecil dari pada banyaknya permintaan. Masalah transportasi adalah cara pengalokasian Yang tepat agar produk tersebut dapat didistribusikan sehingga biaya yang dikeluarkan seminimal mungkin. Tujuan pada penelitian ini adalah menentukan Solusi optimal suatu masalah transportasi. Permasalahan beras RASKIN diformulasikan ke dalam model transportasi. Model tersebut selanjutnya dicari Solusi fisibel awalnya dengan menggunakan metode Lowest Supply Lowest Cost (LSLC). Setelah itu diuji keoptimalannya dan dilakukan revisi tabel menggunakan metode Stepping Stone. Berdasarkan hasil diperoleh bahwa Gudang Wajok Hulu mendistribusukan beras ke Mempawah dan Landak, dan Gudang Sungai Raya mendistribusikan beras ke Pontianak dan Kubu Raya. Dengan demikian biaya pendistribusian adalah Rp. 1.903.539.690.  Kata Kunci:  Solusi Fisibel Awal, Revisi Tabel, Solusi Optimal
ANALISIS PELABELAN TITIK PADA GRAF SIERPINSKI GASKET S_n DAN PENCARIAN BILANGAN DOMINASI TOTAL UNTUK n=1-4 Tripina, Maria; Kusumastuti, Nilamsari; Yudhi, Yudhi
BIMASTER : Buletin Ilmiah Matematika, Statistika dan Terapannya Vol 13, No 4 (2024): Bimaster : Buletin Ilmiah Matematika, Statistika dan Terapannya
Publisher : FMIPA Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/bbimst.v13i4.78045

Abstract

Diberikan graf G=(V,E) dengan V adalah himpunan titik dan E adalah himpunan sisi yang menghubungkan sepasang titik. Dua buah titik u,v  dikatakan bertetangga jika u,v Ñ” E  Himpunan S subset V(G) disebut himpunan dominasi dari graf G jika setiap titik dari V(G) - S yang bertetangga setidaknya satu titik dari S  Himpunan dominasi S dari suatu graf G tidak tunggal dan kardinalitas himpunan terkecil dari graf G adalah bilangan dominasi γ (G)  Persekitaran dari himpunan S atau N(S) adalah himpunan semua titik di G yang bertetangga dengan titik di S  Himpunan S subset V adalah himpunan dominasi total di G  jika setiap titik v Ñ” V yang memenuhi N(S)=V dan kardinalitas himpunan dominasi total terkecil  dari graf G adalah bilangan dominasi total yang dilambangkan dengan γt (G). Penelitian ini membahas tentang analisis pelabelan titik pada graf Sierpinski Gasket  dan mencari bilangan dominasi total pada graf Sierpinski Gasket Sn untuk n=1-4. Graf Sierpinski Gasket Sn dikontruksikan berdasarkan segitiga Sierpinski. Segitiga Sierpinski merupakan fraktal yang serupa dengan dirinya yang dibangun dari sebuah segitiga sama sisi yang dibagi secara rekursif menjadi  buah segitiga yang kongruen dengan skala setengah dari segitiga sebelumnya. Hasil dari penelitian ini diperoleh bilangan dominasi total pada graf Sierpinski Gasket Sn.n Ñ” N yaitu: γt (S1)=2, γt (S2)=2, γt (S3)=5, γt (S4)=5Kata Kunci : Himpunan persekitaran, himpunan dominasi, bilangan dominasi.
ANALISIS AKURASI JARAK BACA OCR DAN QR CODE PADA PROTOTYPE SMART PARKING Ammar, Farid; Khariyyah, Lina; Afriansyah, Riki; Yudhi, Yudhi
Technologia : Jurnal Ilmiah Vol 16, No 1 (2025): TECHNOLOGIA (JANUARI)
Publisher : Universitas Islam Kalimantan Muhammad Arsyad Al Banjari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/tji.v16i1.17394

Abstract

Penelitian ini mengembangkan layanan website smart parking terintegrasi dengan prototype yang menggantikan teknologi RFID pada penelitian sebelumnya dengan menerapkan komponen teknologi QR Code untuk hak akses parkir dan pembayaran otomatis bagi pengendara. Kamera pada prototype smart parking dapat mengolah gambar plat kendaraan menjadi teks menggunakan Optical Character Recognition (OCR) untuk verifikasi akses slot parkir pada website smart parking. Uji jarak baca pada plat kendaraan menunjukkan akurasi 97,5% untuk plate recognition pada jarak 100 cm dan jarak 150 cm menunjukkan hasil akurasi 81,25%. Kemudian jarak ideal untuk memindai QR Code adalah 10 sampai 30 cm.
Penerapan Algoritma Cross Entropy–Genetic Algorithm Untuk Optimasi Makespan Pada Penjadwalan Flow Shop Paranditus, Paranditus; Noviani, Evi; Yudhi, Yudhi
Jurnal Matematika UNAND Vol. 13 No. 1 (2024)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.13.1.1-13.2024

Abstract

Penjadwalan flow shop merupakan jenis penjadwalan produksi dimana setiap pekerjaan yang diproses seluruhnya mengalir pada proses yang sama, dengan tujuan untuk mencari urutan pekerjaan yang dapat mengoptimalkan nilai makespan. Penelitian ini bertujuan untuk mencari kombinasi urutan pekerjaan dengan nilai makespan yang optimal pada CV Bestone Indonesia. Permasalahan penjadwalan flow shop dapat diselesaikan dengan menggunakan Cross Entropy–Genetic Algorithm (CEGA). Algoritma CEGA bekerja dengan cara membangkitkan sampel awal (N) secara acak, kemudian sampel selanjutnya diperoleh dari hasil proses crossover dan mutasi dengan parameter berupa parameter kejarangan (ρ), koefisien penghalusan (α), parameter crossover (Pc) dan parameter pemberhentian (β). Berdasarkan pengolahan data yang telah dilakukan menggunakan Algoritma CEGA, diperoleh urutan pekerjaan 3, pekerjaan 1, pekerjaan 4, pekerjaan 2 dan urutan pekerjaan 3, pekerjaan 4, pekerjaan 1, pekerjaan 2 serta nilai makespan sebesar 389116,52 detik.
Sistem Monitoring Peninjauan Kapasitas Sampah Via Telegram Berbasis Internet Of Things Dengan Application Development Okta Rina, Tiara; Fauzan, M Nur; Ocsirendi, Ocsirendi; Yudhi, Yudhi
Jurnal Inovasi Teknologi Terapan Vol. 3 No. 1 (2025): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v3i1.277

Abstract

Internet of things (IoT) is a concept where various physical devices are interconnected and communicate through the internet. These devices can also be managed through applications on smartphones, not only that IoT can also collect data from the surrounding environment through sensors from this data can be analyzed to provide insight or automate actions. The sensors in this final project include loadcell sensors, MQ-135 sensors, and ultrasonic sensors. The method used is the application development method which refers to a systematic approach used in designing, developing, testing, and implementing application software. The results show that using the application development method can be easily understood by users, one of the application software that can be applied is the telegram application. The system must be designed to collect, process, and send data efficiently, including proper sensor calibration and system tests to ensure accuracy. In addition, it is necessary to implement a reliable communication system to report information in real-time and provide a monitoring system that can provide appropriate notifications and analysis.
Co-Authors Aan Febriansyah Al Azizi, Fudhail Azzam Thoriqi Aljona, Sarah Amalia Wigati Aminuyati Ammar, Farid Ananda Sapitri, Anjelalica Andi Hairil Alimuddin Andri Royani Anggelina, Florensi Silva Anggraeni, Rosiana Angraini, Wanda Apriliandi Apriliandi Arin Yerliansyah Arya Pratama, Putra Handika Azura, Tina Bayu Prihandono BENI, YAKOBUS Danang Try Purnomo Debataraja, Naomi Nessyana Dedek Noviyani Desi Ayu Wulandari Dessy Natalia Dhea Prameswari Egi Riansyah Eko Sulistyo Endah Sayekti Evi Novian Evi Noviani FAJRIN NURSETYA DESI Fansiskus Fran Fauzan, M Nur Febriyanto, Ferdy Feby Fitria Ramadhita Feriliani Maria Nani Firman Saputra Firman, Ely Fitriani Fitriani Fran, Fransiskus Frananta Maha Fransiskus Fran Fransiskus Fran Hasanuddin Hasanuddin Hasanuddin Helmi Helmi Helmi Helmi Helmi Hendra Perdana Humaira Ichlashi Amaliah Ilham, Muhamad Ilham Imroah, Nurfitri Irfant Bayu Pratama Irianti, Faradila Irvandi, Firzakalpa Syafiq Iskandar, Rais Khairun Nisa Khariyyah, Lina Laksono Trisnantoro Lili Oktaviana Liliana, Tiara Limanto, Vincent Lita Novianti Lovi Dwi Purnamasari Luluk Hendriyana Mahmul Mahmul Maisurah Maisurah Mareta, Nadia Mariatul Kiftiah Martha, Shantika Maulydiana Septiani Mawarni, Selkia Meiliana Meiliana Meliana Pasaribu Minsas, Sukal Mochammad Imron Awalludin Mudinillah, Adam Muhammad Adiyan Septianda Muhammad Iqbal Nugraha Muhardi Muhardi Naomi Nessyana Debataraja Neva Satyahadewi Nilamsari Kusumastuti Nirmala, Irma Nopiani Nopiani Novitasari Novitasari Nurfitriana Nurfitriana Nurtaniyahya, Ilham Nurul Fadhilah NUR’AINUL MIFTAHUL HUDA Ocsirendi Okta Rina, Tiara P.W., Elvi Rusmiyanto Paranditus Paranditus Paranditus, Paranditus Pramudya, Deby Debora Pratama, Anjeryan Sapta Puji Ardiningsih Puteri Islamega Taufani Rabitah Al-Alawiyah ratih ratih Ratnasari, Dian Eka Rayhannisa, Rayhannisa Renisa Auditaputri Rian Prasetio Riki Afriansyah Risko, Risko Sahrial Sakti Simanjuntak, Junjungan Dwipa Sandi, Sabinus Saputra, Irpan Sari, Reny Puspita Selah Siti Nur Amanah Suhardi Tantri, Eliana Tesah Aldi Parani Tri Desrehan, Sagit Tripina, Maria Try Purnomo , Danang Uray Agustian Utari, Dina Wahyu Fahrizal Windarti, Ayu Yanitami, Alvi Yuli Rahayu Yuliardi Kurniawan Yundari, Yundari Yundari, Yundari Yuni Wulandari Yusnanda Yusnanda Zanu Saputra Zettira Septiani