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All Journal International Journal of Marine Engineering Innovation and Research Nusantara Hasana Journal Batara Wisnu : Indonesian Journal of Community Services Yudishtira Journal : Indonesian Journal of Finance and Strategy Inside
Rosalina, Amanda
Shipbulding Engineering Department, Shipbuilding Polytechnic Institute Surabaya
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Transportation

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EDUKASI PEMILAHAN SAMPAH ORGANIK DAN ANORGANIK PADA ANAK-ANAK KB-RA MASJID JENDERAL SUDIRMAN SURABAYA Rosalina, Amanda; Sholihah, Mar’atus; Sari, Nur Fajar Aprilia; Gastriani, Ovi Prina; Rismawati, Ria; Fajardini, Ridhani Anita
Batara Wisnu : Indonesian Journal of Community Services Vol. 5 No. 1 (2025): Batara Wisnu | Januari - April 2025
Publisher : Gapenas Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53363/bw.v5i1.351

Abstract

Efforts to conserve the environment must begin with small, tangible actions in one's immediate surroundings. Waste management is particularly critical, as every human activity has the potential to generate waste. Therefore, it is crucial to educate young children about the environmental impacts of waste to cultivate their awareness and concern for their environment. This community service initiative aims to enhance early childhood awareness of waste management's importance at KB-RA Masjid Jenderal Sudirman Surabaya through a comprehensive waste sorting program for organic and inorganic materials. The methodology employs a participatory approach, actively engaging children in learning activities. Evaluation involves conducting pre-tests and post-tests, which include giving children different kinds of organic and inorganic waste samples and assessing them to sort the waste into appropriate bins. Data is processed and analyzed using the paired sample T-test approach with Minitab software. The study's results indicate a significant increase in knowledge following educational sessions and assistance in sorting organic and inorganic waste. It is anticipated that this positive behavior will extend to their homes and communities, making waste sorting a concrete step towards mitigating environmental issues caused by waste
PENGARUH PILIHAN AUDITOR EKSTERNAL TERHADAP KUALITAS LAPORAN KEUANGAN PADA PERUSAHAAN PERBANKAN YANG TERDAFTAR DI BURSA EFEK INDONESIA Gastriani, Ovi Prina; Sholihah, Mar'atus; Rosalina, Amanda; Sari, Nur Fajar Aprilia; Rismawati, Ria; Fajardini, Ridhani Anita
Yudishtira Journal : Indonesian Journal of Finance and Strategy Inside Vol. 4 No. 3 (2024): Yudishtira Journal : Indonesian Journal of Finance and Strategy Inside
Publisher : Gapenas Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53363/yud.v4i3.119

Abstract

This study aims to determine the effect of auditor choice, in this case Big-4 and Non-Big-4 Affiliated Auditors, on the Financial Reporting Quality in Banking Companies listed on the Indonesia Stock Exchange. The dependent variable in this study is Financial Reporting Quality with the proxy of Discretionary Accruals which are estimated using the Cross-Sectional Modified Jones Model. Meanwhile, the Independent Variable uses Big-4 or Non-Big-4 Auditor Choices. Hypothesis testing was carried out using Multiple Linear Regression analysis in 43 banking companies for 6 (six) years, namely 2016 – 2021. The test results show that the auditor choice has a negative effect on discretionary accruals. Thus, the auditor choice has an influence on the quality of financial statements.
PEMANFAATAN LIMBAH SANDBLASTING INDUSTRI PERKAPALAN MENJADI PRODUK BATA BETON PEJAL MENDUKUNG MATERIAL HIJAU Nur Fajar Aprilia Sari; Luqman Cahyono; Amanda Rosalina; Maret’atus Sholihah; Ria Rismawati; Ovi Prina Gastriani; Muhammad Akbar Febianto
Nusantara Hasana Journal Vol. 5 No. 4 (2025): Nusantara Hasana Journal, September 2025
Publisher : Yayasan Nusantara Hasana Berdikari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59003/nhj.v5i4.1705

Abstract

Indonesia, as a maritime country, has industrial activities that generate a large amount of waste. One of the largest waste-producing sectors is the shipping industry, particularly from ship maintenance and repair activities in shipyards. In this industry, there is a process called sandblasting, which is used to clean ship surfaces from rust, old paint, and other contaminants. The silica sand used in this sandblasting process is classified as hazardous and toxic waste (B3 waste). This waste poses a risk of environmental pollution if not properly managed.The research problem in this study is how to utilize sandblasting waste as an alternative material in the production of solid concrete bricks. The objective of the study is to process this waste into technically and environmentally feasible solid concrete bricks. The methods used include chemical characterization of raw materials using XRF, making test specimens in the form of 50 × 50 × 50 mm cubes, and conducting compressive strength and TCLP (Toxicity Characteristic Leaching Procedure) tests. The results show that the A2 variation produced a compressive strength of 142 kg/cm², exceeding the SNI 03-0349:1989 standard for quality I concrete bricks, and the TCLP test results indicated that the levels of Cu and Cr met the quality standards set by Government Regulation No. 22 of 2021. Therefore, solid concrete bricks made from hazardous and toxic waste are considered feasible as an environmentally friendly alternative construction material.
Analysis of Fly Ash and Sandblasting Waste Addition in Cementitious Composite Lawn Table Reinforced by Cocofiber and Wiremesh Primaningtyas, Widya Emilia; Auliyasari, Inshiro; Pratiwi, Wiwik Dwi; Nisazarifa, Adristi; Nursyifaulkhair, Desrilia; Rosalina, Amanda
International Journal of Marine Engineering Innovation and Research Vol 9, No 4 (2024)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25481479.v9i4.21852

Abstract

Concrete technology has significantly advanced and remains an interesting research topic. The demand for cement usage rises significantly due to concrete usage in various sectors. Cement production leads to air pollution issues and causes a greenhouse effect, even in the modern filtration era. Fly ash is an industrial waste that has been identified as a viable substitute for cement due to its pozzolanic properties. Silica Sand is sandblasting waste, where added value is needed. This study investigates the effectiveness of fly ash substitution in the cement portion of cementitious composite materials as an effort to minimize cement usage. Using sandblasting waste is an effort to implement 3R activity (reduce, reuse, recycle) for maritime waste.  Compressive and tensile tests were evaluated in the variation of fly ash substitution for cementitious composite reinforced by coco fiber and wiremesh model. The results show that a 40% fly ash substitution gives the highest compressive strength of 32.98 MPa and the tensile strength of 5.90 N/mm². The best model composition provides the increments of compressive and tensile strength compared to the control specimen at 43.60% and 12.60%, respectively. ANOVA tests confirmed the significance of the enhancing effect as the presence of fly ash, both for compressive and tensile strength. Additionally, static analysis simulations using Fusion360 software were performed and indicated that the cementitious composite lawn table prototype’s design is safe and has good formability, as a safety factor performed 2.26, exceeding the required value of 2.00. This result explicates that fly ash and waste materials can be effectively used in cementitious composites for practical applications.
Co-Authors Auliyasari, Inshiro Fajardini, Ridhani Anita Gastriani, Ovi Prina Luqman Cahyono Maret’atus Sholihah Muhammad Akbar Febianto Nisazarifa, Adristi Nur Fajar Aprilia Sari Nursyifaulkhair, Desrilia Ovi Prina Gastriani Pratiwi, Wiwik Dwi Primaningtyas, Widya Emilia Ria Rismawati Ridhani Anita Fajardini Rismawati, Ria Sari, Nur Fajar Aprilia Sholihah, Mar'atus Sholihah, Mar’atus