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All Journal International Journal on Livable Space Teras Jurnal Syntax Literate: Jurnal Ilmiah Indonesia Rang Teknik Journal Technomedia Journal Astonjadro Syntax Idea Vocatech : Vocational Education and Technology Journal Community Empowerment Journal of Civil Engineering and Planning (JCEP) IAIC Transactions on Sustainable Digital Innovation (ITSDI) Journal La Multiapp Multidiciplinary Output Research for Actual and International Issue (Morfai Journal) Journal of Education Research Journal of Infrastructure and Civil Engineering Jurnal Locus Penelitian dan Pengabdian Startupreneur Business Digital (SABDA Journal) SAINSTEK Jurnal AKAL: Abdimas dan Kearifan Lokal Indonesian Journal of Construction Engineering and Sustainable Development International Journal on Livable Space Eduvest - Journal of Universal Studies Jurnal Rekayasa Lingkungan Terbangun Berkelanjutan
Endah Kurniyaningrum
Universitas Trisakti, Jakarta, Indonesia
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ANALISIS FAKTOR PENYEBAB TERJADINYA COST OVERRUN PADA PROYEK PRESERVASI JALAN Fatchurrohman, Fatchurrohman; Zaki, Muhammad; Pontan, Darmawan; Kurniyaningrum, Endah
Rang Teknik Journal Vol 7, No 2 (2024): Vol. 7 No. 2 Juni 2024
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31869/rtj.v7i2.5476

Abstract

The background to this research is that other important things in implementing construction projects, apart from quality and time, are costs. The construction projects studied were road preservation projects carried out by construction service companies from 2015 to 2022. There were eighteen (18) road preservation projects studied throughout Indonesia, both on the islands of Sumatra, Java, Kalimantan, Sulawesi and Papua. During implementation, there was an increase in costs (cost overrun) so that the company's profit target was not met and disrupted the performance of work completion.The purpose of this research is to determine the causes of the increase in implementation costs relative to the direct costs that have been determined so that repeated failures do not occur in implementing road preservation projects.This type of research is associative research with a quantitative approach. The variable used is cost overrun as the dependent variable. Meanwhile, the independent variables are estimated costs, materials, labor, equipment, project finances, project documents, implementation time, natural environment, implementation of work relations and economic feasibility as well as local sub-contractors.The data collection technique in this research used a questionnaire distributed to respondents, namely the project team of road preservation project managers, totaling 54 respondents from 2015 to 2022 at state companies in the construction services sector.The results of this research are that the factors causing cost overrun in road preservation projects are material variables, equipment variables and local sub-subcontractor variables. The dominant factors causing cost overruns in road preservation projects are first, the material variable with a regression coefficient of 0.554. Second, the local sub-subcontractor variable with a reference coefficient of 0.376. Lastly, the equipment variable has a regression coefficient of 0.271.
Analisis Perubahan Curah Hujan di Stasiun Halim DKI Jakarta Menggunakan Data Satelit CHIRPS dan CANESM5 Yanti, Suryani; Kurniyaningrum, Endah; Andajani, Sih; Paramitha, Dina; Sejati, Wahyu
Journal of Education Research Vol. 5 No. 4 (2024)
Publisher : Perkumpulan Pengelola Jurnal PAUD Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37985/jer.v5i4.1973

Abstract

Siklus hidrologi yang dipengaruhi oleh kondisi lingkungan pada suatu daerah aliran sungai akan berdampak pada perubahan dan pergeseran intensitas curah hujan serta pola musiman. Dinamika perubahan tersebut akan mempengaruhi daya dukung sumber daya air pada suatu DAS. DKI Jakarta mengalami beberapa perkembangan diantaranya pertumbuhan penduduk dan penggunaan lahan. Sehingga mengakibatkan daya dukung lingkungan semakin menurun. Akibat penurunan daya dukung mengakibatkan terjadinya pergeseran atau perubahan siklus hidrologi.   Penelitian ini dilakukan untuk menganalisis proyeksi curah hujan berdasarkan skenario perubahan iklim yang berdampak pada daya dukung sumber daya air pada  Daerah Aliran Sungai khususnya wilayah Provinsi DKI Jakarta. Skenario perubahan iklim yang digunakan adalah skenario Representative Concentration Pathways (RCP) 4.5 dan 8.5. Data curah hujan yang digunakan sebagai baseline (1994-2023) merupakan data hasil pengamatan dan data CHIRPS. Dalam memprediksi curah hujan 30th mendatang (2024-2073), digunakan data satelit Global Climate Models (GCM) yaitu CANESM5.
Pengembangan Model Spasial Kebutuhan Air Domestik pada DAS Cisadane Hulu (Batubeulah) Nisa, Tazkia Nabila; Hidayat, Dina P. A; Andajani, Sih; Kurniyaningrum, Endah; Sejati, Wahyu
SAINSTEK Vol. 13 No. 1 (2025)
Publisher : Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/js.v13i1.342

Abstract

The Upper Cisadane watershed is a strategic area, having an important role in meeting domestic water needs along with population growth and regional development. This study aims to provide an overview of the distribution of domestic water demand by calculating based on district boundaries, watersheds, and built-up areas. The analysis includes the fulfillment of domestic water needs and mainstay discharge, with projections using the arithmetic method. The domestic water demand in each scenario (Scenario I: 3.875 m3/s, Scenario II: 2.755 m3/s, Scenario III: 0.624 m3/s) is presented. The results showed that water availability in the Batubeulah watershed is still surplus, with a minimum Q90% of 14.4 m3/s and a minimum Q95% of 7.6 m3/s, still sufficient to meet the total domestic water demand in all scenarios. Although the water balance between the mainstay discharge and domestic water demand is currently in the safe category. For the results of the projection analysis of scenarios I and II, it shows an increase every year, due to the specifications of the area used.
PENGARUH KERAPATAN VEGETASI TERHADAP SUHU PERMUKAAN LAHAN DI WILAYAH DAS CILIWUNG (STUDI KASUS DKI JAKARTA) Trinugraha, Divo; Kurniyaningrum, Endah
Jurnal Rekayasa Lingkungan Terbangun Berkelanjutan Vol. 2 No. 1 (2024): Januari-Juni
Publisher : Jurusan Arsitektur Fakultas Teknik Sipil dan Perencanaan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/v2i1.19435

Abstract

DAS penting dalam menyediakan air, tetapi perubahan lahan di DKI Jakarta, seperti urbanisasi dan pertumbuhan pemukiman, mengubah pola aliran air dan meningkatkan suhu permukaan. Transformasi lahan menyebabkan penurunan vegetasi dan masalah lingkungan. Pembangunan sering tidak sesuai dengan rencana, menyebabkan penurunan kualitas lingkungan. Penelitian Dewi & Rudiarto (2014) menyoroti ketidakseimbangan antara pembangunan dan pelestarian lingkungan, menekankan perlunya kebijakan yang berkelanjutan dalam pengelolaan lahan.Pada penelitian ini digunakan metode penginderaan jauh dengan menggunakan parameter Land Surface Temperature (LST) dan Normalized Difference Vegetation Index (NDVI), yang diolah menggunakan aplikasi ArcMAP. Hasil dari analisis menunjukkan hubungan negatif antara kerapatan vegetasi (NDVI) dan suhu permukaan lahan (LST) dari tahun 1990 hingga 2021. Koefisien determinasi (R²) menunjukkan pengaruh moderat pada tahun 1990, dan pengaruh lemah pada tahun 2000, 2010, dan 2021. Temuan ini konsisten dengan penelitian sebelumnya yang menekankan pentingnya vegetasi dalam mengatur suhu permukaan lahan. Meskipun hubungan ini konsisten, pengaruhnya bisa bervariasi tergantung pada faktor-faktor lokal. Oleh karena itu, penelitian lanjutan diperlukan untuk memahami dinamika spasial antara NDVI dan LST, yang penting untuk mitigasi perubahan iklim dan manajemen lingkungan. Keywords : Normalized Difference Vegetation Index (NDVI), Land Surface Temperature (LST)
Pendekatan Statistik Klasifikasi Curah Hujan Dalam Pengelolaan Sumber Daya Air Berkelanjutan Kurniyaningrum, Endah; Rinanti, Astri; Herlina, Liana; Victorya, Chindy; Wahab, Nyimas Hazel Lahfahdila; Assidik, Muhammad Luthfi; Faisal, Ulfa Fatmasari; Kawanda, Aksan; Saily, Randhi
Journal of Infrastructure and Civil Engineering Vol. 5 No. 3 (2025)
Publisher : Program Studi Teknik Sipil Sekolah Tinggi Teknologi Pekanbaru

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35583/jice.v5i3.129

Abstract

Wilayah DAS Juana di Jawa Tengah merupakan kawasan rawan banjir yang mengalami tekanan lingkungan akibat perubahan tutupan lahan dan dampak perubahan iklim global. Fenomena iklim seperti El Niño dan MJO semakin meningkatkan ketidakpastian curah hujan dan menyebabkan fluktuasi ekstrem. Strategi mitigasi banjir di wilayah ini masih belum efektif karena tidak didukung oleh klasifikasi curah hujan yang berbasis tren historis dan analisis statistik. Oleh karena itu, diperlukan pendekatan sistematis untuk mengidentifikasi tren curah hujan secara ilmiah sebagai dasar dalam pengelolaan sumber daya air dan mitigasi bencana banjir. Permasalahan Utama yaitu belum tersedianya metode klasifikasi curah hujan berbasis analisis statistik jangka panjang yang dapat digunakan untuk mendukung strategi mitigasi banjir di DAS Juana dan sekitarnya. Urgensi Penelitian yaitu menganalisis tren curah hujan jangka panjang di DAS Juana dan Kabupaten Kendal menggunakan metode statistik Mann-Kendall, menyusun klasifikasi curah hujan berdasarkan hasil analisis tren dan memberikan rekomendasi ilmiah untuk strategi mitigasi banjir berdasarkan klasifikasi tersebut. Metode Penelitian ini digunakan pendekatan studi literatur dan analisis statistik. Data curah hujan selama 34 tahun dari BMKG dianalisis menggunakan metode Mann-Kendall. Proses analisis meliputi perhitungan statistik S, varian S, nilai Z, tingkat signifikansi, dan interpretasi hasil. Hasil kemudian digunakan untuk mengklasifikasikan curah hujan dan mengevaluasi keterkaitannya dengan kejadian iklim ekstrem seperti ENSO. Hasil Penelitian ini yaitu analisis Mann-Kendall menunjukkan bahwa sebagian besar tren curah hujan di DAS Juana tidak signifikan secara statistik, namun terdapat beberapa tahun dengan tren signifikan yang berkorelasi dengan kejadian iklim global. Klasifikasi curah hujan menunjukkan perbedaan antara musim hujan (?115 mm) dan musim kemarau (<85 mm), serta kebutuhan koreksi terhadap data model menggunakan fungsi polinomial. Hasil ini menegaskan pentingnya data jangka panjang (?30 tahun) untuk memperoleh akurasi klasifikasi curah hujan hingga 100%. Kontribusi Penelitian ini memberikan kontribusi pada pengembangan metodologi klasifikasi curah hujan berbasis statistik untuk wilayah DAS tropis. Klasifikasi yang dihasilkan dapat dijadikan dasar dalam penyusunan strategi mitigasi banjir dan perencanaan pengelolaan sumber daya air. Selain itu, metode ini dapat direplikasi di wilayah lain dengan karakteristik hidrometeorologi serupa.
Education on natural rubber-based base isolator technology for SMKN 26 Jakarta students as an earthquake mitigation effort Diyanti, Marsetya Aulia Rahma; Herlina, Liana; Kurniyaningrum, Endah; Wijaya, Usman; Kawanda, Aksan; Putri, Larasati Rizky
Community Empowerment Vol 10 No 10 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ce.14609

Abstract

Indonesia's high vulnerability to earthquakes, which often results in severe damage and casualties, necessitates disaster risk mitigation efforts based on science and technology. This community service activity aimed to improve disaster technology literacy and students' understanding of the working principles of earthquake-resistant structures. The focus was on introducing base isolator (earthquake damper) technology made from natural rubber for residential buildings. This activity was conducted at SMKN 26 Jakarta using interactive presentations, technology demonstrations, and participative discussion methods. An evaluation of understanding was administered to 66 participants using a pre-test and post-test design. The evaluation results showed that 100% of participants experienced an increase in understanding and knowledge after the activity. This indicates that the technology demonstration-based educational approach is effective in supporting disaster technology literacy at the vocational high school level.
Evaluation of the Influence of Communication Aspects and Leadership Competence in Decision Making to Improve Performance in Housing Developers Sirait, Gifson; Kurniyaningrum, Endah
Eduvest - Journal of Universal Studies Vol. 5 No. 12 (2025): Eduvest - Journal of Universal Studies
Publisher : Green Publisher Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59188/eduvest.v5i12.51905

Abstract

The construction industry, particularly in housing development, plays a strategic role in meeting the need for adequate housing, supporting economic growth, and improving the quality of life for communities. However, the implementation of housing projects faces complex challenges, such as pressure to meet high quality standards, tight schedules, and limited budgets. Factors such as communication aspects and leadership competence play a significant role in decision-making to enhance project performance. This study aims to analyze various factors that influence the quality and performance of projects in housing development, including the influence of communication and leadership competence in decision-making to improve project performance. In addition, this research also evaluates the relationship between decision-making and project performance, as well as the mediating role of decision-making in the relationship between communication aspects and leadership competence on project performance. This study uses a quantitative approach with a survey method. Data were collected through a closed-ended questionnaire using a Likert scale and analyzed using statistics. The analysis includes descriptive analysis and PLS-SEM (Partial Least Squares Structural Equation Modeling), covering both the outer model and inner model measurements. The results of this study revealed a significant relationship between communication aspects and project leadership competencies on decision-making, as well as the impact of decision-making on overall project performance with a percentage of 73.6%. Furthermore, decision-making plays an important mediator in strengthening the relationship between the two variables of communication aspects and project leadership competencies with project performance with a percentage of 49.4%.
Study of Excavation Volume Calculation Using Mapping Application in Irrigation Network Modernization Activities Pratama, Imron Sigit; Saily, Randhi; Jusi, Ulfa; Lyona, Vinka; Kurniyaningrum, Endah
Journal of Civil Engineering and Planning (JCEP) Vol. 6 No. 2 (2025)
Publisher : Program Studi Sarjana Teknik Sipil Universitas Internasional Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/jcep.v6i2.10900

Abstract

The modernization of irrigation networks is a vital effort to improve the efficiency and effectiveness of water distribution for agriculture. This activity also represents the implementation of the government’s Asta Cita program in the context of national food security. One critical component of this process is excavation work, which significantly influences the success of such projects. This study aims to evaluate the accuracy of several interpolation methods in calculating excavation volumes based on design data, compared to existing conditions, using a tolerance threshold of 2.78%. The analysis indicates that interpolation methods produce varying results. The Kriging method shows a deviation of 2.30%, and the Surface to Surface (TIN) method shows a deviation of only 0.02%, both of which fall within acceptable deviation limits. These two methods also demonstrate high consistency and optimal accuracy for volume estimation. In contrast, methods such as Natural Neighbor (18.89%) and Radial Basis Function (RBF) (46.17%) result in significant deviations, indicating overestimation or underestimation that affects volume accuracy. Therefore, methods like Kriging and TIN, which meet the tolerance limits, are recommended for more accurate and efficient volume calculations in construction and topographic mapping activities.
Analisis Tren Historis Dan Proyeksi Curah Hujan 2080 Di Das Juwana: Pendekatan Downscaling Statistik Victorya, Chindy; Kurniyaningrum, Endah; Anggraini, Dina Paramita; Sudinda, Teddy; Assidik, Muhammad Luthfi
VOCATECH: Vocational Education and Technology Journal Vol 7, No 2 (2025): December
Publisher : Akademi Komunitas Negeri Aceh Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38038/vocatech.v7i2.231

Abstract

Dalam beberapa dekade terakhir, wilayah Daerah Aliran Sungai (DAS) Juwana di Jawa Tengah semakin sering dilanda banjir sehingga berdampak serius, mulai dari kerugian ekonomi hingga gangguan kesehatan pada masyarakat. Perubahan penggunaan lahan dan pengaruh perubahan iklim global diyakini menjadi pemicu utama perubahan pola curah hujan di wilayah ini. Penelitian ini dilakukan untuk memahami bagaimana dinamika curah hujan berkembang di DAS Juwana selama 22 tahun terakhir (1998–2019), serta bagaimana kondisi ini mungkin berubah hingga tahun 2080 berdasarkan dua skenario iklim yaitu pada kondisi RCP 4.5 dan RCP 8.5. Kami menggunakan metode downscaling statistik dengan data curah hujan satelit TRMM yang dikombinasikan dengan model iklim global CMIP5. Hasilnya menunjukkan bahwa DAS Juwana memiliki pola hujan tropis, dengan puncak curah hujan terjadi pada Desember hingga Februari. Beberapa tahun seperti 2006, 2008, dan 2010 mencatat hujan ekstrem yang bertepatan dengan fenomena La Niña. Proyeksi ke depan menunjukkan adanya tren peningkatan intensitas curah hujan, khususnya pada musim hujan. Di bawah skenario RCP 8.5, lonjakan curah hujan lebih tajam dibandingkan RCP 4.5, terutama pada Januari dan Desember. Temuan ini menjadi peringatan penting akan meningkatnya risiko banjir ekstrem di masa depan dan menegaskan perlunya strategi adaptasi serta perencanaan pengelolaan air yang lebih tanggap terhadap perubahan iklim masa depan. 
CONTRACTOR DECISION MAKING ON CONTINUING A SUSPENDED PROJECT USING AHP-TOPSIS (A CASE STUDI OF THE NINES PLAZA & RESIDENCE BSD PROJECT) Jiwo Waskito; Endah Kurniyaningrum
Multidiciplinary Output Research For Actual and International Issue (MORFAI) Vol. 6 No. 2 (2026): Multidiciplinary Output Research For Actual and International Issue
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/morfai.v6i2.5011

Abstract

Suspended construction projects pose multidimensional challenges and necessitate accountable follow-up decision-making from the contractor’s perspective. This study develops a multi-criteria decision making (MCDM) framework to determine the most appropriate alternative for continuing a suspended high-rise building project, using the Nines Plaza and Residence BSD as a case study. The Analytic Hierarchy Process (AHP) is applied to derive priority weights for nine decision criteria, while the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) is used to rank four decision alternatives for project continuation. Decision robustness is examined through contextual scenario variations, respondent clustering based on expertise, and sensitivity analysis of criterion dominance. The results indicate that cost and financing are the most influential criteria, and continuing the project through a strategic partnership (joint venture) emerges as the best alternative. Robustness testing confirms that the decision outcome is stable and not driven by a single dominant criterion, demonstrating that the integrated AHP–TOPSIS approach is a suitable decision-support tool for contractors dealing with suspended construction projects.
Co-Authors Abadan, Achmad Chakim Adhi Kurniawan, Mochamad Adidjaja, Pauline Amanda Aksan Kawanda Aksan Kawanda Amin Rais Andajani, Sih Andi Mukti Widayanto Anggraini, Dina Paramita Antoni, Febri Aprianti, Annisa Arfyan, Aslam Rizki Arief Firmansyah Assidik, Muhammad Luthfi Azriel, Muhammad Radja Babeheer, Muhammad Riziq Bambang Asmoro Bambang Endro Yuwono Berman, Berman Cakrawinata, Annastashia Dinie Aprilia Diah Utami, Diah Difa Faluty, Mutiara Dina Paramitha Anggraeni Hidayat Diyanti, Marsetya Aulia Rahma Dwiki Komara, Kresna Egy Nafriro Lazuardi Evans, Richard Fadly, Noer Fahmy Hermawan Fatchurrohman Fatchurrohman, Fatchurrohman Giraldi Fardiaz Kuswanda Hakim, Auliyaul Kaisa Hari Abrianto Haryadi, Tania Diva Hegi Daniel Mulya Henoch Leindrio Cornelis, Henoch Leindrio Hermawan, Fahmi Herprioningrum, Maharani Hidayat, Dina P. A Hidayat, Dina P.A Hira Sattar Imas Widhah Misshuari Imas Wihdah Misshuari Inavonna, Inavonna Innavona, Innavona Irawandi, Veby Irlan, Ade Okvianti Jajang Sujarwadi Jiwo Waskito Julia Damayanti Jusi, Ulfa Kardiani, Rani Kawanda, Aksan KHUSNUL HOTIMAH Khusnul Hotimah Komara, Kresna Dwiki Larasati Rizky Putri Liana Herlina Liana Herlina Liana Herlina Lili Kusumawati Lisa Oksri Nelfia Lyona, Vinka M. Zaki M. Zaki M. Zaki, M. Zaki Mahardika, Diky Bayu Mahatmantong, Syafrullah Margaretta, Fricilia Misshuari, Imas Wihda Mohamad Husein Alfian Mokodongan, Masita Aisza Muhammad Anwar Muhammad Zaki Mulya, Hegi Daniel Mutiara Difa Faluty Nelfia, Lisa Oksri Nisa, Tazkia Nabila Palensia, Ruri Welda Paramitha, Dina Parwadi Moengin Pontan, Darmawan Popi Puspitasari Popi Puspitasari Pratama Haditua R Siregar Pratama, Imron Sigit Primahessa, Angga Rahman, Naufall Fadhlur Rahmat , M. Haikal Randhi Saily Rizkina, Salwa Zahra Rose, Ugahari Saihul Anwar Saihul Anwar Salman, Salman - Septasawala, Ardiasa Siburian, Carlos Tua March Siburian Sih Andayani Silawati, Nur Silia Yuslim Silvano, Verian Gustam Sinaga, Johan Christian Sirait, Gifson Siregar, Dini Nadhilah Siregar, Pratama Haditua R Soepradono, Bram Sudinda, Teddy Sujarwadi, Jajang Tidaryo Kusumo Trinugraha, Divo Tulus Widiarso Ulfa Fatmasari Faisal Victorya, Chindy Wahab, Nyimas Hazel Lahfahdila Wahyu Sejati Wikoyati, Mira Yanti, Suryani Zaki, M.