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All Journal Pendas : Jurnah Ilmiah Pendidikan Dasar International Journal of Natural Science and Engineering Jurnal Pengabdian Mandiri Jurnal Informatika Polinema (JIP)
Ahmad Rizaldi
Unknown Affiliation
Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Library & Information Science Social Sciences Other

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SISTEM PRESENSI MENGGUNAKAN NFC SMARTPHONE ANDROID DAN RASPBERRY PI (STUDI KASUS POLITEKNIK NEGERI MALANG) Luqman Affandi; Ekojono; Ahmad Rizaldi
Jurnal Informatika Polinema Vol. 6 No. 3 (2020): Vol 6 No 3 (2020)
Publisher : UPT P2M State Polytechnic of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jip.v6i3.299

Abstract

Presensi adalah kegiatan pengambilan data untuk mencatat jumlah kehadiran. Ada beberapa metode pengambilan presensi yang sering digunakan, yaitu memanggil nama satu persatu dan memberikan kertas untuk ditanda-tangani satu persatu. Hal tersebut merupakan cara konvensional yang masih diterapkan di Politeknik Negeri Malang (Polinema). Pengambilan data kehadiran secara konvensional kurang efisien dan memiliki beberapa masalah diantaranya membutuhkan waktu yang lama dalam memanggil mahasiswa satu persatu, membutuhkan biaya untuk mencetak kertas dan kertas presensi sering kali terlambat dicetak dan didistribusikan. Berdasarkan permasalahan tersebut, muncul ide untuk memanfaatkan NFC pada smartphone Android untuk melakukan proses presensi pada setiap mahasiswa. Sistem menggunakan Representational State Transfer (REST) untuk komunikasi data. Sistem presensi Jurusan Teknologi Informasi (JTI) Polinema dengan cara konvensional membutuhkan waktu 1 jam. Dengan memanfaatkan teknologi ini, sistem presensi hanya membutuhkan waktu selama 5 menit. Berdasarkan pengujian alat pembaca NFC jarak optimal pembacaan tag adalah < 4 cm untuk smartphone dan < 3 cm untuk sticker NFC dan waktu rata-rata response sampai data terkirim ke database server adalah 0.47541s untuk NFC smartphone dan 0.19975s untuk sticker NFC.
PEMBERDAYAAN MASYARAKAT MELALUI PENGEMBANGAN UMKM BERBASIS SOUVENIR DESA WISATA BATU KUMBUNG LINGSAR LOMBOK BARAT Ahmad Rizaldi; Ahmad Jamiluddin; Baiq Tessanolita Deaning Tiaz; Baiq Tria Febri Ani Annisa; Dona Putri Asayanti; Divi Gusnawan; Muhammad Zaenul Huda; Nurqaim, Nurqaim; Ratu Tita Maharani Ranteg; Reza Bambang Samudra; Yusri Ramadhan; Fathurrahim, Fathurrahim
JURNAL PENGABDIAN MANDIRI Vol. 3 No. 3: Maret 2024
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jpm.v3i3.7611

Abstract

Desa Batu Kumbung adalah desa yang subur dengan sumber air yang melimpah dan lahan pertanian yang luas. Kondisi alamnya masih alami dengan panorama alam yang sangat indah dan itu menjadi salah satu nilai tambah bagi Desa Batu Kumbung. masalah yang ditemukan dilapangan yaitu kurang maksimalnya pengembangan UMKM sebagai souvenir. Dalam pengembangan potensi wisata daerah Batu Kumbung ini, kami akan menawarkan program program yang relevan dengan permasalahan tersebut. Metode yang digunakan dalam pengabdian ini adalah Perencanaan, pelaksanaan dan evaluasi partisipatif KKN STP Mataram. Hasil dari kegiatan ini adalah masyarakat dan kelompok UMKM sangat antusias terhadap program yang dilakukan seperti halnya kegiatan inovasi souvenir berup pembuatan kerupuk lele, the kulit manggis, gantungan kunci dan pengadaan market point yang disertakan program pendukung lainnya.
Technical and Economic Analysis of Distillation Column Design in the Biodiesel Industry Erwan Adi Saputro; Ahmad Rizaldi; Sanjoyo, Bandung Arry
International Journal of Natural Science and Engineering Vol. 8 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijnse.v8i1.44743

Abstract

The distillation column is one of the vital components in the biodiesel industry equipment, functioning to separate biodiesel compounds from other compounds such as glycerin and residual methanol. This research aims to analyze future predictions of distillation column prices based on the specified equipment specifications. This type of research is quantitative research with a descriptive approach. The type of research used in this study is quantitative descriptive research with a case study approach and technical simulation. In this study, the methodology used to estimate distillation equipment costs in biodiesel production involves a comprehensive two-stage approach: Equipment specifications are determined based on production capacity, and then price estimates are carried out using the Peters & Timmerhaus formula. In this research, the sample used is technical and economic data related to distillation column design in the biodiesel industry. The calculation data is compared with actual prices on the market to validate the accuracy of the method. The data analysis technique used is economic engineering estimation calculations accompanied by empirical comparisons. The research results show that increasing production capacity requires larger distillation column specifications, such as tower diameter, tower height, and number of holes in the tray, and more complex supporting accessories to support optimal performance. Price comparison shows that the estimation method using the Peters & Timmerhaus formula produces fairly accurate predictions of current market prices. These findings imply that this method can be used as an adequate approach to planning the procurement of distillation columns in the biodiesel industry more efficiently. The implications of this research show that optimal distillation column design not only increases the efficiency of the biodiesel purification process but also significantly reduces operational costs and initial investment. From a technical perspective, proper design can increase product purity, reduce energy consumption, and extend equipment life, ultimately improving overall plant performance.
PENDEKATAN DEEP LEARNING TERHADAP PEMBELAJARAN SISWA DAN SISWI PAUD MUTIARA DI SKB KOTA CILEGON Nujma Kamila Fitri; Ahmad Rizaldi; Rahmat Hidayatulloh
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 10 No. 04 (2025): Volume 10 No. 04 Desember 2025
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v10i04.39708

Abstract

The deep learning approach in the learning process of Mutiara Early Childhood Education students at SKB Kota Cilegon focuses on cognitive development, fine motor skills, and active participation. The research method used is descriptive qualitative, involving students aged 4-6 years through three learning sessions with the themes “Air vehicles” and “Colestical Objects”. Data were collected through observations, student worksheet, post-learning evaluations, and documentation. Learning activities included writing exercises, paper folding projects (making airplanes and helicopter), and making rainbows from colored paper. The result showrd that deep learning approach had a positive impact on students cognitive abilities, with students being able to answer questions correctly during the evaluation. Students became more actively involved in learning activities, showed increased curiosity, and experienced better fine motor development through project-based activities. Visual media in the form of worksheets containing colored images proved effective in helping students acquire information quickly. However, implementation challenges remain, including limited acces to teacher training, inadequate infrastructure,and a curriculum that is not aligned with deep learning principles. The deep learning approach has proven effective in improving the quality of early childhood learning through active, collaborative, and meaningful learning experiences, although its optimization requires the support of teacher competency, an appropriate curriculum, and adequate facilities.
Co-Authors Ahmad Jamiluddin Baiq Tessanolita Deaning Tiaz Baiq Tria Febri Ani Annisa Divi Gusnawan Dona Putri Asayanti Ekojono Erwan Adi Saputro Fathurrahim, Fathurrahim Luqman Affandi Luqman Affandi Muhammad Zaenul Huda Nujma Kamila Fitri Nurqaim, Nurqaim Rahmat Hidayatulloh Ratu Tita Maharani Ranteg Reza Bambang Samudra Sanjoyo, Bandung Arry Yusri Ramadhan