Istiqomah -
Program Studi Pendidikan Matematika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Pasir Pangaraian

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ANALISIS MODEL MATRIKS PITA (BANDED MATRIX) DALAM MENENTUKAN MAKSIMUM HARGA BIBIT TANAMAN KELAPA SAWIT -, Istiqomah; Afri, Lusi Eka; -, Hardianto
Jurnal Ilmiah Mahasiswa FKIP Prodi Matematika Vol 1, No 1 (2015): Jurnal Ilmiah Mahasiswa FKIP Prodi Matematika
Publisher : Universitas Pasir Pengaraian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (436.656 KB)

Abstract

The purpose of this research is to construct banded matrix model and to forming the mathematic model in determining the maximum price of the palm oil seed by usingbanded matrix. One of ways to form it can be down by using a linear system equations that can be arrange to the matrix. The matrix who related with linear system equation can be classified into dense and sparse matrix. The banded matrix is a part of sparse matrix. Based on the results of the tape matrix model on mathematic, the obtained of maximum price on palm oil seeds contained on Rp. 9.000,-
Pengolahan Limbah Biji Alpukat Untuk Pembuatan Dodol Pati Sebagai Alternatif Pengobatan Ginjal Nuur Halimah, Aulia Dewi; -, Istiqomah; Syofiatul Rohmah, Siti
Jurnal Ilmiah Mahasiswa Vol 4, No 1 (2014): Jurnal Ilmiah Mahasiswa
Publisher : Jurnal Ilmiah Mahasiswa

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Abstract

Alpukat  (Perseaamericana mill) merupakan tanaman yang tumbuh subur di daerah tropis seperti Indonesia dan memiliki kandungan antioksidan yang tinggi.  Namun demikian, biji alpukat yang  merupakan salah satu hasil produk pertanian masih belum dimanfaatkan dengan maksimal dan hanya dibuang sebagai limbah. Padahal biji alpukat memiliki kandungan yang kaya  manfaat yaitu untuk pengobatan ginjal. Menurut Pusat Data Statistik dan Informasi Perhimpunan Rumah Sakit Seluruh Indonesia, jumlah pasien gagal ginjal kronik semakin meningkat. Oleh karena itu tujuan dari penulisan ini adalah untuk menganalisis potensi dan manfaat limbah biji alpukat serta mengetahui pengolahan limbah biji alpukat untuk pembuatan dodol pati sehingga dapat memberikan solusi alternatif pengobatan ginjal kepada masyarakat melalui pengolahan limbah biji alpukat menjadi dodol pati. Metode yang digunakan dalam penulisan karya tulis ini melalui studi kepustakaan yang dilakukan dengan menelaah buku-buku serta literatur-literatur dan melalui observasi langsung ke masyarakat. Pengolahan limbah biji alpukat menjadi dodol pati ini dapat membuka wawasan masyarakat bahwa limbah biji alpukat ini masih memiliki nilai guna yang tinggi karena selain dapat mengurangi pencemaran lingkungan akibat limbah biji alpukat, juga dapat mengobati penyakit ginjal.
Perbandingan Plat Hollow Core Slab (HCS) Dan Cast In-Situ : Biaya, Dan Waktu (Studi Kasus : Project Museum Al-Kitab GBI Summarecon Bandung) Ridwan, Ma'sum Alanur; Nurasiyah, Siti; -, Istiqomah
Jurnal Teknik Sipil dan Teknologi Konstruksi Vol 11, No 2 (2025): JURNAL TEKNIK SIPIL DAN TEKNOLOGI KONSTRUKSI
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jts-utu.v11i2.13420

Abstract

 A In the construction industry, there are two primary methods for concrete work: the conventional method (cast in situ) and the precast method. This study compares existing conventional floor slabs in the Al-Kitab GBI Summarecon Bandung Museum project with the precast Hollow Core Slab (HCS) system as an alternative modification. The conventional method is carried out directly on-site, requiring extensive formwork, labor, and strict supervision, resulting in a longer construction timeline. The precast HCS method does not require formwork, offers better quality control as it is manufactured in a factory, and requires less labor, although it necessitates heavy machinery for the installation of structural elements. The differences in characteristics between these two methods impact construction costs and the duration of the work. This study employs a quantitative descriptive approach tailored to the research variables, focusing on current issues and construction phenomena. The analysis compares the two construction methods based on two main aspects: cost and construction time, focusing on floor slab structures. Based on the analysis of the two floor slab methods—cast-in-place and precast hollow core slab (HCS)—it was found that the precast HCS slab system has an advantage in terms of construction time, being 46 days or 29.3% faster than the cast-in-place method. However, in terms of cost, the precast HCS method is more expensive by Rp264,422,444.67 or 4.11% compared to the cast-in-place method.