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All Journal Syntax Literate: Jurnal Ilmiah Indonesia JURIKOM (Jurnal Riset Komputer) G-Tech : Jurnal Teknologi Terapan Al-Ijtimā: Jurnal Pengabdian Kepada Masyarakat
Hidayah, Wahyu
Unknown Affiliation
Religion Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences Other

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Implementasi Metode Mamdani Pada Sistem Pendukung Keputusan Penentuan Kenaikan Jabatan Karyawan Hidayah, Wahyu; Sinurat, Sinar
JURIKOM (Jurnal Riset Komputer) Vol 7, No 5 (2020): Oktober 2020
Publisher : STMIK Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/jurikom.v7i4.2282

Abstract

PT. Sinar Sosro Deli Serdang Branch has many employees. Problems faced by the company PT. Sinar Sosro Deli Serdang Branch is in determining the promotion of a large number of employees for each division of the company. Of all the many employees who are entitled to a promotion, certainly not all of them are chosen or only a few will keep the position. Complexity occurs in determining employees who rose from the number of employees who are entitled in the determination stage. An effort is needed to make complicated decisions in determining promotions in PT. Sinar Sosro Deli Serdang Branch. Determination of a complex decision can use the Mamdani Fuzzy Logic Method. Fuzzy Logic The Mamdani method is a logic for resolving values that have obscurity or blurring. PT.Sinar Sosro Deli Serdang Branch conducted an election for its employees who deserve a promotion. In this case the method used for decision support systems is the Mamdani method.
Synthesis of Aragonite Polymorphs from Five Types of Sea Shells by Carbonation Method Hadi, Prasetyo; Hidayah, Wahyu; Sani, Sani; Muljani, Srie
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v9i3.6998

Abstract

Shell waste accumulates along the coastal areas of Surabaya and Sidoarjo, with various types of shells including blood shells, green shells, feather shells, kampak shells, and batik shells. Currently, the waste from these shells is not being utilized optimally. Marine shell waste contains more than 95% calcium carbonate (CaCO3), making it suitable for the production of aragonite crystals, which can serve as raw materials for applications such as bone regeneration, paper manufacturing, and as fillers in rubber and plastics. The objective of this research is to synthesize aragonite from five types of marine shells and to investigate the effect of carbonation temperature on the percentage of aragonite formation. The method employed for synthesizing aragonite crystals is carbonation. Initially, the CaCO3 derived from marine shells is calcined at 900°C to produce calcium oxide (CaO). This calcium oxide is then dissolved in hydrochloric acid (HCl) to form calcium chloride (CaCl2). Subsequently, sodium hydroxide (NaOH) is added to CaCl2, and carbon dioxide (CO2) gas is bubbled through the solution to precipitate CaCO3 along with by-products of NaCl and water. The variables examined include comparisons among five types of shells (blood shells, green shells, feather shells, kampak shells, and batik shells) at calcination temperatures of 30°C, 60°C, and 90°C. The best results were obtained from the synthesis using green shells, yielding an aragonite crystal polymorph percentage of 76.4% at a carbonation temperature of 90°C. Conversely, the smallest yield of aragonite crystal polymorph was observed with batik shells at 26.0%.
Penerapan Ecobrick Sebagai Solusi Untuk Mengurangi Sampah Plastik Di Lingkungan Pondok Pesantren Assunniyyah Kencong Jember Al Humaira, Farha Niswa; Alfianti, Garneza Merlyana; Rahmawati, Ayu; Putri, Zirly Zauda; Hasanah, Nur; Hidayah, Wahyu; Maharsany, Nabilla Rahma; Rahman, Fazlul
Al-Ijtimā': Jurnal Pengabdian Kepada Masyarakat Vol 5 No 1 (2024): Oktober
Publisher : Lembaga Penelitian, Publikasi Ilmiah dan Pengabdian kepada Masyarakat (LP3M)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53515/aijpkm.v5i1.135

Abstract

Waste is a problem that is always faced by all sectors, one of which is the Assunniyyah Islamic Boarding School in Jember Regency. As an educational institution, the waste problem at the Assunniyyah Islamic Boarding School in Jember Regency is mostly inorganic waste, especially plastic waste. This waste has not been used so it only ends up in landfills. This Community Service Program aims to increase awareness of students about waste and implement ecobricks as an effort to reduce plastic waste in the Assunniyyah Islamic Boarding School environment in Jember Regency. The method used starts from the inorganic waste introduction stage, the ecobrick introduction stage, and the ecobrick making training stage. The results of this program show that this training is useful. Keyword: Devotion, Ecobricks, Inorganic waste
Laporan Praktek Kerja Profesi Psikologi Bidang Psikologi Industri & Organsasi PT. Athena Tagaya Hidayah, Wahyu
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.598 KB) | DOI: 10.36418/syntax-literate.v7i12.10262

Abstract

Analisis jabatan merupakan proses mengumpulkan dan menganalisis tentang tugas-tugas pada suatu pekerjaan, serta syarat yang dibutuhkan untuk melakukan pekerjaan tersebut untuk menetapkan dokumen deskripsi dan persyaratan jabatan. Pelaksanaan analisis jabatan sangat penting dilakukan untuk menjadi pedoman dasar bagi setiap pegawai dalam menjalankan pekerjaan, serta menjadi dasar untuk kegiatan manajemen sumber daya manusia lainnya seperti pelaksanaan evaluasi kinerja, penetapan upah maupun ketika perusahaan hendak melakukan rekrutmen dan seleksi. Di PT Athena Tagaya, perlu dilakukan review job description untuk posisi financial officer karena telah terjadi perubahan antara dokumen sebelumnya dengan kondisi kerja saat ini. Sementara deskripsi pekerjaan sebelumnya dari seorang petugas keuangan terkait dengan bertanggung jawab atas semua kegiatan keuangan, tugas yang saat ini dilakukan oleh seorang petugas keuangan terkait dengan administrasi pajak, penagihan, dan perhitungan gaji. Melaksanakan analisis pekerjaan, dengan menggunakan metode pengumpulan data, berupa daftar pertanyaan tentang pekerjaan yang dilakukan pemegang jabatan. Selain itu, pengumpulan data dilengkapi dengan metode wawancara dengan pejabat publik. Setelah data diperoleh dari pemegang jabatan, diverifikasi dengan atasan langsung, bendahara. Integrasi data yang telah dilakukan telah menghasilkan dokumen job description dan persyaratan kerja bagi tenaga keuangan. Dokumen analisis jabatan personel keuangan yang telah diaudit dapat digunakan sebagai dasar rekrutmen dan seleksi Bagian Keuangan, penyusunan standar operasional prosedur (SOP), serta dapat dijadikan acuan dalam melaksanakan pekerjaan sehari-hari.
Co-Authors Al Humaira, Farha Niswa Alfianti, Garneza Merlyana AYU RAHMAWATI Fazlul Rahman Maharsany, Nabilla Rahma Nur Hasanah Prasetyo Hadi Putri, Zirly Zauda SANI SANI Sinurat, Sinar SRIE MULJANI