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All Journal Journal of Civil Engineering Jurnal Rekayasa Sipil Proceeding of World Conference Quantitative Economics and Management Studies Prosiding Seminar Nasional Teknik Sipil UMS Jurnal Bisnis Kehutanan dan Lingkungan Journal of Infrastructure Policy and Management (JIPM)
Sunandar, Ali
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Transportation

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Risk and Change Order Impact Analysis of Costs in Tamansari Iswara Bekasi Project Sunandar, Ali; Aszhari, Kuncoro Bili
Quantitative Economics and Management Studies Vol. 2 No. 4 (2021)
Publisher : Yayasan Ahmar Cendekia Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (578.899 KB) | DOI: 10.35877/454RI.qems323

Abstract

In every construction project, there is always a change or what is commonly called a change order (CO). CO greatly affects the effectiveness of project work where its sustainability depends on three interrelated components namely quality, time and cost. The purpose of this study is to determine the causes, risks, impact of CO and risk management on costs. This research was conducted in the Bekasi area at the Tamansari Iswara project. This study uses descriptive analysis methods and direct interviews with the experts concerned by distributing questionnaires to 85 respondents and producing data for analysis. With the help of statistical analysis software that is SPSS researchers use several tests such as validity test, reliability test, descriptive analysis test, regression analysis, and risk analysis to determine the dominant variables and risk management. From the results of the analysis conducted there are 6 dominant variables namely X18, X19, X15, X28, X21, X9, X25, and the highest risk is found in variables X1 and X21.
Analysis of BRT Infrastructure in Jakarta Province on Women's Perspective Sunandar, Ali; Ainundyasari, Aprillia
Journal of World Conference (JWC) Vol. 2 No. 2 (2020): March 2020
Publisher : NAROTAMA UNIVERSITY, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/prd.v2i2.215

Abstract

Quality of service in the business world is very important so that all consumer needs are met. Likewise with the world of land transportation which is always developing both in its type, size, and methods used in providing services. The Neat Transit Bus which operates in DKI Jakarta is one of the modes of mass transportation provided by the DKI Jakarta government to support the service needs of DKI Jakarta residents. Good transportation services will bring up a high level of customer satisfaction. The purpose of this study is to determine the dominant factors that influence the parameters of BRT passenger satisfaction in DKI Jakarta, to know the level of female consumer satisfaction with the quality of BRT services in DKI Jakarta. The research method used in this study is the CSI (Customer Satisfaction Index) by distributing questionnaires to respondents. From the research, the level of satisfaction of female customers in using the BRT public transportation facilities in the DKI Jakarta provincial government was 66%. Customer satisfaction criteria are in the Satisfied category.
Risk Analysis Of Jakarta Pramuka Market Area Management To Improve Customer Satisfaction Sunandar, Ali; Alfian, Muhammad Agfi
Journal of World Conference (JWC) Vol. 2 No. 2 (2020): March 2020
Publisher : NAROTAMA UNIVERSITY, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/prd.v2i2.216

Abstract

This research dilator behind how big the influence of risk factors that exist in the Jakarta scout market area to increase customer satisfaction. This study aims to determine the dominant factors causing management risks that exist in the Jakarta scout market area related to increased customer satisfaction. This study aims to determine the dominant factors causing the management risks that exist in the Scouting Market Area to obtain some of the most influential risks and develop strategies to be able to increase customer satisfaction in the Scouting Market Area. The study used a survey method in the form of asking questions to several respondents. This survey was conducted by distributing questionnaires and interviews with relevant parties that were used as a source of information. From the results of data processing with a statistical data processing application, several high risks have an impact on customer satisfaction and get a strategy to reduce these impacts.
Analysis of Bicycle Path Infrastructure in Jakarta to Improve Cycling Comfort Sunandar, Ali; Tia, Rahma Waldhani
Journal of World Conference (JWC) Vol. 2 No. 3 (2020): May 2020
Publisher : NAROTAMA UNIVERSITY, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29138/prd.v2i3.224

Abstract

The Provincial Government of DKI Jakarta is demanded to provide infrastructure and infrastructure that is environmentally friendly. one of the steps of the DKI Jakarta provincial government is to build bicycle lane infrastructure. Previously, the Government had built bicycle path infrastructure but it was not used as it functions. The purpose of this study is to determine the variables that most affect the infrastructure of the bicycle lane and provide suggestions for managing the variables that most influence so that bicycle lane users get the comfort of cycling so that the infrastructure is used properly and can reduce the level of air pollution in Jakarta. In this study, the authors used a quantitative research method by distributing questionnaires to respondents of active cyclists and passive cyclists. The questionnaire distributed contained variables of infrastructure facilities and infrastructure, and then the results of the questionnaire data which were primary data were processed using the Statistical Application Program. This research uses 4 stages of the questionnaire by using validity, reliability, descriptive test, Spearman correlation rank test, and regression test. The results of this study are the Bicycle Path Infrastructure in Jakarta has 3 variables that most influence in increasing the comfort of cyclists, there is the Evenness of the Path (49,4%), The Limiting of the Lane (33%), and the Existence of Markers(17.1%).
Analisis Pengendalian Pengadaan Material Bangunan dengan Metode MRP (Material Requirement Planning) pada Proyek Gedung Fertilia, Novika Candra; Sunandar, Ali
Rekayasa Sipil Vol 13, No 1 (2024)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jrs.2024.v13.i1.02

Abstract

Pada penelitian sebelumnya yang berjudul Analisis Risiko Penyebab Keterlambatan Proyek Pengembangan Pembangunan Gedung Margono Suradji Yogyakarta Berbasis PMBOK, didapatkan bahwa salah satu risiko tinggi yang berpengaruh pada kinerja waktu proyek adalah jadwal pengiriman material ke site. Agar perencanaan dan penggunaan material menjadi efektif dan efisien, diperlukan perencanaan kebutuhan material yang tepat. Tujuan dari penelitian ini adalah untuk mendapatkan gambaran perencanaan pengadaan material yang lebih terukur terhadap kuantitas dan jadwal penggunaan material dengan mengaplikasikan model pengadaan metode MRP. Dengan adanya metode MRP diharapkan ketersediaan stok material dapat terjaga secara berkesinambungan. Berdasarkan analisis yang dilakukan, dengan teknik lot-sizing lot for lot model POQ ditemukan pengelola proyek dapat meramalkan jumlah material yang harus dipesan dan juga stock yang harus terjaga dalam setiap pekan sesuai dengan jadwal pelaksanaan proyek. Hasil analisis menunjukkan bahwa material bekisting (multiplex 6 mm, 120x240), proses pengadaannya dapat lebih terukur, yaitu pemesanan dilakukan selama 6 kali, dengan jumlah yang berbeda-beda yang disesuaikan dengan kebutuhan pada pekan tersebu. Material besi Dia. 10 mm juga perlu dipesan sebanyak 6 kali dalam 1 periode, sedangkan material besi dia. 19 mm, besi dia. 22 mm, dan wiremesh M-10 hanya cukup 1 kali pemesanan dalam 1 periode pelaksanaan pekerjaan
Exploring Risk Aspects in Public-Private Partnership Infrastructure Research: A Bibliometric Analysis Sunandar, Ali; Abd Karim, Saipol Bari; Zolkafli, Umi Kalsum
Journal of Infrastructure Policy and Management (JIPM) Vol. 7 No. 1 (2024): Journal of Infrastructure Policy and Management (JIPM)
Publisher : PT Penjaminan Infrastruktur Indonesia (Persero)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35166/jipm.v7i1.45

Abstract

The risk aspect is a key component of the Public-Private Partnership (PPP) infrastructure scheme. The study employed bibliometric analysis to shed light on research trends concerning risk aspects in PPP. The author focused on publication trends, co-authorship networks, local citation patterns, cluster analysis, and co-occurrence of key terms. In addition, the authors compiled a list of studies on the risk aspects of PPP infrastructure. Using bibliometric data from 356 Scopus-indexed publications, this study identifies the leading authors, nations, institutions, publishers, influential papers, and research topics related PPP infrastructure risk over the past decade (2014-2023). The findings reveal that from 2014 to 2017, research predominantly focused on risk factors, success criteria, development projects, contracts, toll roads, water supply, and social infrastructure. Between 2018 and 2020, the emphasis shifted towards risk assessment, risk analysis, risk management, and risk allocation. Since 2021, the research trends have evolved to include urban growth, investment, the private sector, partnership models, internet protocols, and intelligent systems. Future research on PPP infrastructure risk should incorporate technological concepts and business entity perspectives. This study also contextualizes its findings within the broader landscape of emerging markets in Asia and globally and highlights these trends in the Indonesian context.
Exploring Delphi Method Utilization Research Trends on Public-Private Partnership Infrastructure Studies Sunandar, Ali; Abd Karim, Saipol Bari; Zolkafli @Zulkifly, Umi Kalsum
Journal of Infrastructure Policy and Management (JIPM) Vol. 8 No. 1 (2025): Journal of Infrastructure Policy and Management (JIPM)
Publisher : PT Penjaminan Infrastruktur Indonesia (Persero)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35166/jipm.v8i1.92

Abstract

This study seeks to explore the application of the Delphi method in Public-Private Partnership (PPP) infrastructure research over a ten-year span (2015-2024), with a focus on various characteristics such as the application of the Delphi method across different PPP infrastructure sectors, expert criteria for Delphi panels, the diverse use of consensus, and the execution of Delphi rounds. Employing a Systematic Literature Review (SLR) guided by the PRISMA framework, the study utilizes thematic categories alongside co-occurrence and co-authorship analyses to identify trends in the application of the Delphi method in PPP infrastructure studies. The review concentrates on literature indexed in two leading academic databases: Web of Science (WoS) and Scopus. The findings indicate that the use of the Delphi method has grown significantly in the past ten years within infrastructure PPP schemes, particularly in emerging countries driven by the increasing demand for infrastructure development. Research trends have highlighted a variety of characteristics of the Delphi method, including criteria for selecting experts, the number of expert participants, the number of Delphi rounds, and different approaches for achieving consensus or agreement. These findings offer valuable insights to inform and enhance the methodological rigor of future research utilizing the Delphi method in the context of PPP infrastructure.
Optimalisasi Integrasi Transit Point Infrastruktur Terminal melalui Aplikasi Rekayasa Nilai Kristiana, Retna; Sediyanto, S; Sunandar, Ali
Prosiding Seminar Nasional Teknik Sipil UMS 2023: Prosiding Seminar Nasional Teknik Sipil UMS
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Transportasi di era sekarang berperan sangat penting untuk masyarakat karena sudah menjadi kebutuhan dasar dan digunakan sehari-hari untuk berkegiatan. Pemerintah Provinsi DKI Jakarta sedang menggalakkan pembangunan transportasi umum yang bertujuan untuk mengurangi kemacetan kotanya. Tidak hanya dari segi sarana transportasi itu sendiri, salah satunya prasarana terminal bus juga dapat dimaksimalkan fungsinya untuk menunjang tingkat pelayanan transportasi. Untuk itu diperlukan fungsifungsi tambahan pada infrastruktur terminal bus agar dapat meningkatkan pelayanan warga Jakarta. Penelitian ini menggunakan tinjauan studi literatur, benchmarking fungsi secara worldwide, dan analisis rekayasa nilai. Dari fase kreativitas rekayasa nilai didapatkan hasil fungsi tambahan yang relevan yaitu fungsi ruang publik, fungsi ruang penyimpanan, fungsi telekomunikasi , fungsi efisiensi ruang, fungsi komersil, dan fungsi kebutuhan pelanggan.
Circular economy mapping in the palm oil value chain: Towards a conceptual framework for sustainable transition Sunandar, Ali; Andriyanti, Fitri; Karim, Saipol Bari Abd; Zolkafli, Umi Kalsum
Jurnal Bisnis Kehutanan dan Lingkungan Vol. 3 No. 2: January (2026)
Publisher : Institute for Advanced Science, Social, and Sustainable Future

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61511/jbkl.v3i2.2026.3215

Abstract

Background: The palm oil sector has long been a major contributor to Indonesia’s economy; however, it continues to face criticism for its environmental impact. The circular economy (CE) offers a transformative approach to shift the sector from a linear system to a regenerative model centered on resource recovery, waste reduction, and value retention. This study aims to systematically map CE opportunities across all phases of the palm oil value chain, including pre-production, cultivation, processing, and consumption, and to develop a conceptual framework that supports Indonesia’s transition to sustainability. Methods: A systematic literature review was conducted using the Scopus and Web of Science databases, following the PRISMA protocol. Publications from 2017 to 2025 were analyzed thematically to identify CE opportunities, key drivers, barriers, and interconnections across the value chain. Findings: CE opportunities were identified in every phase of the palm oil value chain. However, integration across phases remains limited, and coordination among stakeholders and institutions has yet to become systemic or well aligned. Conclusion: A holistic conceptual framework that links CE opportunities across all stages of the value chain is essential to enable a sustainable transition in Indonesia’s palm oil industry. Novelty/Originality of this article: This study presents the first comprehensive and phase-based mapping of CE practices in the palm oil sector and introduces an integrative conceptual framework that consolidates fragmented efforts into a coherent model for Indonesia’s sustainable circular transition.
Examining the Application of the Semi-Structured Interview Method in Public-Private Partnership (PPP) Infrastructure Studies Sunandar, Ali; Andriyanti, Fitri; A. Karim, Saipol B.; Zulkifli, Umi K. Z
Journal of Civil Engineering Vol. 41 No. 1 (2026)
Publisher : Institut Teknologi Sepuluh Nopember (ITS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25799029.v41i1.9498

Abstract

Public-Private Partnership (PPP) schemes are increasingly adopted to address infrastructure financing constraints and to support sustainable development objectives. In PPP infrastructure research, semi-structured interviews are widely used to capture in-depth perspectives from key stakeholders. Despite their extensive application, systematic understanding of how these interviews are designed, implemented, and reported remains limited. This study examines the application of semi-structured interview methods in PPP infrastructure research through a systematic literature review of studies indexed in the Scopus and Web of Science databases. The review evaluates research approaches, interview mediums, data collection and analysis techniques, software utilization, interview duration, participant selection criteria, sampling strategies, data saturation, and practices related to rigor and trustworthiness. The findings indicate that semi-structured interviews are predominantly employed within qualitative research designs and are frequently combined with thematic analysis and qualitative data analysis software. Face-to-face interviews and purposive sampling of experienced PPP stakeholders emerge as the most common practices. However, the review also identifies notable inconsistencies in the definition and reporting of data saturation and qualitative rigor across studies. This study contributes to methodological advancement by providing a structured overview of current practices and highlighting areas where clearer and more consistent reporting is required. The findings offer practical guidance for researchers and practitioners seeking to strengthen methodological rigor and transparency in PPP infrastructure research.
Co-Authors A. Karim, Saipol B. Abd Karim, Saipol Bari Ainundyasari, Aprillia Alfian, Muhammad Agfi Andriyanti, Fitri Aszhari, Kuncoro Bili JOSHUA, JOSHUA Karim, Saipol Bari Abd Kristiana, Retna Novika Candra Fertilia Sediyanto, S Tia, Rahma Waldhani Zolkafli @Zulkifly, Umi Kalsum Zolkafli, Umi Kalsum Zulkifli, Umi K. Z