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All Journal Jurnal Ergonomi Indonesia (The Indonesian Journal of Ergonomic) Jurnal Pembangunan Wilayah dan Kota Jurnal Manajemen Teknologi Journal of Economics, Business, & Accountancy Ventura Finesta Competence : Journal of Management Studies (Kompetensi : Jurnal Studi Manajemen) Jurnal Aplikasi Bisnis dan Manajemen (JABM) E-Journal Tesa Arsitektur Jurnal Wilayah dan Lingkungan Jurnal Tataloka Asia-Pacific Management and Business Application Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri Civil Engineering Dimension Jurnal Inovasi Bisnis (Inovbiz) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Share : Journal of Service Learning Petra International journal of Business Studies (IJBS) EQIEN - JURNAL EKONOMI DAN BISNIS Surya Abdimas Jurnal Psikologi Sosial JOURNAL OF APPLIED BUSINESS ADMINISTRATION EKUITAS (Jurnal Ekonomi dan Keuangan) Jurnal Pelayanan dan Pengabdian Masyarakat (Pamas) MANAJEMEN DEWANTARA Jurnal Manajemen Perhotelan dan Pariwisata Jurnal Ekonomi dan Manajemen DEDIKASI PKM Dimensi Utama Teknik Sipil Bulletin of Community Engagement BISMA (Bisnis dan Manajemen) Journal of Economics Research and Policy Studies Journal of Accounting and Digital Finance Penamas: Journal of Community Service Jurnal Akuntansi dan Keuangan DIMENSI: Journal of Architecture and Built Environment Jurnal Manajemen Aset dan Penilaian Prosiding Seminar Nasional Pengabdian Masyarakat Advances in Civil Engineering and Sustainable Architecture International Journal of Financial and Investment Studies Abdimas Dinamis KOPEMAS Welfare: Jurnal Pengabdian Masyarakat
Njo Anastasia
Faculty Of Business And Economics, Petra Christian University, Surabaya
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Implementasi teknologi ALPAMAL dalam penyediaan air bersih untuk meningkatkan produktivitas usaha rumah tangga di Desa Tegalsari, Sidoarjo Aurell Nathania Limetta; Stefanie Tjenderadjaja; Charleen Nicole Tan; Ocdio Howard Setiawan; Dhyah Harjanti; Surya Hermawan; Njo Anastasia
Penamas: Journal of Community Service Vol. 6 No. 1 (2026): Penamas: Journal of Community Service
Publisher : Nur Science Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53088/penamas.v6i1.2818

Abstract

Tegalsari Village, Jabon Sub-district, Sidoarjo Regency, has limited access to clean water due to seawater intrusion, which impacts household health and micro-business productivity. This service programme aims to provide affordable access to clean water by implementing brackish-water purification technology using local materials (ALPAMAL), along with simple business management assistance. The method used was a participatory approach with data collection through a survey of 58 tool users, which was analysed using descriptive statistics. Results showed that 91.4% of respondents were satisfied with the water quality, 86.2% felt time efficiency, and most experienced a decrease in water costs. The utilisation of clean water also contributed to improved product quality, process hygiene, operational efficiency, and customer satisfaction of micro enterprises. These findings show that ALPAMAL technology is an effective, affordable, and sustainable water supply solution that improves the community’s quality of life and economic competitiveness.
Model Prediksi Nilai Jual Apartemen Berbasis Gross Income Multiplier dan Machine Learning Njo Anastasia; Wirawan Sunyoto
Jurnal Manajemen Aset dan Penilaian Vol. 6 No. 1 (2026)
Publisher : Lembaga Riset dan Pengembangan MAPPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56960/jmap.v6i1.215

Abstract

Perkembangan teknologi big data telah mendorong peningkatan akurasi dalam penilaian properti melalui pendekatan Machine Learning (ML). Tujuan penelitian ini mengevaluasi kinerja model ML dalam memprediksi harga jual apartemen di Kota Surabaya. Selain itu, penelitian ini menggunakan Gross Income Multiplier (GIM) sebagai indikator investasi properti untuk menilai konsistensi hasil prediksi harga jual yang dihasilkan oleh model terbaik. Data dikumpulkan melalui teknik web scraping dari situs listing apartemen di Surabaya dalam rentang waktu 19 September - 21 Oktober 2024. Dua model ML, yaitu Linear Regression (LR) dan Artificial Neural Network (ANN), dikembangkan menggunakan IBM SPSS Modeler dan dievaluasi menggunakan Mean Absolute Error (MAE) dan Root Mean Squared Error (RMSE). Hasil penelitian menunjukkan bahwa ANN memiliki kinerja prediksi lebih baik dibandingkan LR, dengan variabel "luas bangunan" sebagai prediktor paling signifikan terhadap harga jual apartemen. Selanjutnya, ANN dianalisis menggunakan GIM sebagai indikator berbasis pendapatan sewa untuk mengevaluasi kewajaran nilai investasi. Hasil perbandingan menunjukkan bahwa median harga jual hasil prediksi ANN relatif konsisten dengan nilai GIM historis. Temuan ini menunjukkan ANN tidak hanya efektif dalam prediksi harga jual, tetapi juga berpotensi untuk analisis kelayakan investasi properti. Integrasi model ML dalam sistem penilaian properti diharapkan apat meningkatkan efisiensi pengambilan keputusan bagi investor dan pengembang serta mendukung perencanaan kota berbasis data di sektor perumahan vertikal.
Kontribusi Infrastruktur Terhadap Transformasi Nilai Tanah di Kota Surabaya dalam Rangka Pembangunan Berkelanjutan Njo Anastasia; Kevin Leonardo; Rico Stevanus; Doddy Prayogo
Jurnal Wilayah dan Lingkungan Vol 14, No 2 (2026): Agustus 2026
Publisher : Department of Urban and Regional Planning, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jwl.14.2.240-254

Abstract

Perkembangan pesat infrastruktur di kawasan perkotaan, khususnya kota Surabaya, telah menimbulkan dinamika baru dalam perubahan nilai lahan. Penelitian ini bertujuan menguji sejauh mana keberadaan infrastruktur seperti jalan tol, stasiun kereta, dan saluran udara tegangan tinggi (SUTT/ SUTET) mempengaruhi nilai tanah dalam konteks perencanaan wilayah yang berkelanjutan. Pendekatan kuantitatif digunakan dengan metode asosiatif untuk mengkaji hubungan antara variable infrastruktur, aspek fisik, lingkungan, serta aspek legal terhadap fluktuasi nilai tanah. Data dikumpulkan melalui sumber sekunder, termasuk sistus properti daring dan data dari broker properti, yang selanjutnya dianalisis menggunakan algoritma Artificial Neural Network (ANN) pada SPSS Modeler. Hasil penelitian menunjukkan bahwa kedekatan lahan dengan stasiun kereta dan SUTT/ SUTET cenderung menurunkan nilai tanah akibat persepsi negatif masyarakat terhadap gangguan suara, polusi, serta potensi risiko keselamatan. Sebaliknya, infrastruktur jalan tol berkontribusi pada peningkatan nilai tanah melalui kemudahan akses da konektivitas wilayah. Temuan ini menjadi dasar pentingnya perencanaan infrastruktur yang selektif dan sensitive terhadap konteks local guna mendorong pertumbuhan kota yang infklusif dan berkelanjutan.
Highest and Best Use Analysis for an Apartment with Office Buildings or Shopping Centers in East Surabaya Barca Hadi Juwono; Timoticin Kwanda; Njo Anastasia
Advances in Civil Engineering and Sustainable Architecture Vol. 2 No. 2 (2019): Advances in Civil Engineering and Sustainable Architecture
Publisher : Petra Christian University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9744/acesa.v2i2.9959

Abstract

Surabaya is the capital of East Java and the center of communityactivities. A developer has a plan to build a residential area in East Surabaya,located on Dharma Husada Indah Barat III road with an area of 7.123 m2. Afterconsidering many aspects, there are two alternative ideas that really attract theattention of this developer, namely, apartments with office buildings or apartmentswith shopping centers. The best decision results of the two alternatives can beanalyzed through the highest and best use (HBU) analysis method. The HBU mustfulfill four criteria, that is, legally permissible, physically possible, financiallyfeasible, and maximally productive. Of the two scenarios, the one that meets theHBU aspect is an apartment with office buildings, with the annual internal rate ofreturn of 99%, the net present value of Rp. 563.448.604.512,- with payback period60,46 months and discounted payback period 60,8 months.
Co-Authors Adelynn Regina Gunawan Adriel Dianto Adwin Surja Atmadja Agnes Eval Agnes Eval Aida Fitriani Tobing Aida Fitriani Tobing Aileen Liana Suwitro Alberto Orson Ongkowidjojo Alvin Januar Haryono Alvin Murthi Amelia Amelia Amelia Amelia Amelia Feliciana Ticoalu Andrew Darrent Andrian Sumtoro Angelie, Jesshelyn Angeline Roesdiyono Arnoldus Henry Tjahyono Aurell Nathania Limetta Austin Adiputra Tahir Purwantoro Avila, Axel Barca Hadi Juwono Benny Poerbantanoe Benny Poerbantanoe Brian Zakaria Budiman, Januar Caroline Faustina Wicaksono Celvin Januar Kusuma Chan Hengky Chandra Charleen Nicole Tan Chavela Wynet Chievo Timothy Soegianto Christiono Utomo Christopher Bradley Budiono Chriswanto, Evelyn Jennis Chyntia Iswantoro Connie Susilawati Connie Susilawati Dave Reynard Dave Reynard Denny Stevanus Widyanto Desy Delvina Wijaya Dewi Pricilia Sari Dhyah Harjanti Dicky Fredy Widjaja Doddy Prayogo Emmanuelle Christiane Emmanuelle Christiane Evelyn Evelyn Evelyn Evelyn EVELYN EVELYN Evelyn Evelyn Fabian Hidayat Felicia Wongosari Ferdian, Edric Foedjiawati Foedjiawati Fransisca Andreani Fransisca Andreani Fransisca Fransisca Gemiartha, Celine Morgan Gesti Memarisa Gesti Memarista Gilbert Alexander Grace Latumahina Hansel William Ongkowijaya Hanskey Tanugara Harjanti, Dhyah Hendarto, Kevin Hendra Hendra Hermawan, Surya Herwono Indra Saputra Hosea, Felixiano Ime Dwi Putri Faries Imelda Wijiyanti Jani Rahardjo Jani Rahardjo Jani Rahardjo Januar Budiman Januar Budiman Joshua Gondo Kusuma Junaedy Junaedy Junaedy Junaedy Juwono, Angela Juwono, Chrisna Hadi Kawano, Yuka Kayne, Steve Ken Ken Kerto Kevin Hendarto Kevin Leonardo Kevin Ronaldo Gotama Kevin Wijaya Kunto, Yohanes Sondang Kusuma, Edward Putra Lidya Priskila Thiosalim Limantoro, Nicholas Jonathan Liniwati Yuono Liniwati Yuono Lorenza, Delyn Margerita Wenny Jessica Mariana Ing Malelak Melani Setiawan Melani Setiawan Melinda Melyani Goni Melisa Margaretha Melisa Margaretha, Melisa Mellicha Jeni Lestaritio Mellisa Marcellina Gunawan Merlin Lenniawati Michaela, Olivia Muktiwibowo, Sebastian Arif Muliadihardjo Muliadihardjo Murthi, Alvin Nanik Linawati Nathasya Wijaya Nicholas Aloysius Ferdinand Wijaya Nony Kezia Marchyta Ocdio Howard Setiawan Oka Christian Setiadiwiria Pappang, Rinita Pertiwi, Dewi Rachel Cintantya Rico Stevanus Rinita Pappang Rizon Rizon Ronaldi Rantelino Ronaldo Richard Gunawan Samantha Christy Tandono Samuel Hans Samuel Ongko Limantoro Sautma Ronni Basana Shierly Ivonne Shierly Ivonne Siana Halim Soetikno, Elbert Sofian Arif Susanto Stefanie Tjenderadjaja Stephanie Gozalie Stephanie Gozalie, Stephanie Stevanus Yuke Sudarsono, Jethson Edbert Sugondo, Amelia Surya Hermawan Surya Hermawan Susanto, Leonardo Christian Susanto, Sofian Arif Sutoto Yakobus Sutoto Yakobus Syah, Angelique Regina Tan, Felice Carmelite Aprilie Tejokusumo, Paulin Theodore, Stanley Thiosalim, Lidya Priskila Timoticin Kwanda Timoticin Kwanda Timoticin Kwanda Timoticin Kwanda Timoticin Kwanda Veronika S. Herlimus Veronika S. Herlimus Victor Christian Gui Victor Winata Pranoto Vincent Wibisono Welly Setiadi Wibisono, Audi Widya Sari Puspa Dewi Suyanto Widyanto, Denny Stevanus Wirawan Sunyoto Wirawan Wangsawinata Wongso, Enrico Yanny Widiastuty Gunawan Yoe Filbert A Yoni Putranto Yoni Putranto Yuliana Lieyanto Yunita Handayani Yunita Handayani Yusuf, Keona