Papers by yelita iskandar
Jurnal logistik Indonesia, Nov 28, 2023
Coffee is one of the plantation products that have an important position in economic activity in ... more Coffee is one of the plantation products that have an important position in economic activity in Indonesia. Coffee also has an important role as an export product in Indonesia's foreign exchange making . The Global Agricultural Information Network released the 2019 Indonesian Coffee Consumption Annual Data showing that Coffee Domestic Consumption for the 2019/2020 period of 294 thousand tons . This shows an increase in coffee consumption of around 13.9% compared to the 2018/2019 period which was only 258 thousand tons. According to the International Coffee Organization (ICO), the amount of coffee consumption is more than the amount of coffee produced in the year period of 2017 to 2020 which shows that there are a lot of coffee enthusiasts in Indonesia. The increase in coffee consumption can be seen in the proliferation of cafe or coffee shop businesses with a modern concept . The result of Toffin's research with Mix Magazine showed that in August 2019, the number of coffee shops in Indonesia was more than 2,950 outlets. This means that there is a threefold increase compared to 2016 when there were only 1,000 outlets . The increasing number of outlets can create intense competition among similar companies . Based on this, every company must find a strategy for running its business so as not to lose market share. One of the strategies that can be used to elevate the coffee business is through the implementation of Customer Relationship Management (CRM) . CRM techniques can be grouped into three categories, namely strategic, operational, and analytical . Analytical CRM is the process of storing, extracting, distributing, using, and reporting customer data into information that can be followed up well by the company .
Sustainability
This paper aims to investigate the interlink between city sustainability development indicators a... more This paper aims to investigate the interlink between city sustainability development indicators and smart sustainable city indicators (SSCIs). While the sustainability development indicators of a city mostly rely on its sustainable development goals (SDGs), no investigations into whether these indicators imply SSCIs have been conducted. SSCIs are critical during the current unprecedented climate crisis and are necessary to facilitate a livable future. This study considers the city of Suwon as a case study. Suwon’s sustainable development policy adopts 10 SDGs among the 17 SDGs from the United Nations, later called Suwon SDGs (SSDGs). By conducting a content analysis, this study found that the indicators adopted from the SDGs require further investigation to evaluate the core SSCIs. Using text analytics, we found that Suwon’s policies focus on indicators in the local environment, such as the employment rates for every age category, even if the SSDG indicators incorporate the SDGs. Th...
Majalah Ilmiah Bijak
PT Asagri Selaras Asia is an agribusiness company in Jakarta, Indonesia that provides food supply... more PT Asagri Selaras Asia is an agribusiness company in Jakarta, Indonesia that provides food supply for entrepreneurs in the tourism sector, such as hotels and restaurants. In running their business, the company has a supply chain network that effectively integrates suppliers, manufacturers, warehouses, and stores. Supply chain management optimization is deemed necessary to maximize efficiency in every process carried out at PT Asagri Selaras Asia. One of the processes that can be optimized is the determination of facility location. The right facility location can minimize distance, delivery time, and operational costs and optimize the company's profit. Currently, the contract period for the distribution center (DC) used by PT Asagri Selaras Asia is about to expire therefore a decision is needed regarding the determination of the DC location for the next period, either extending the current DC contract or moving to a new location. This study aims to maximize the company's prof...
IKRA-ITH Teknologi Jurnal Sains dan Teknologi
Salah satu hal penting dan utama dalam kegiatan operasional distributor ialah pemilihan pemasok.U... more Salah satu hal penting dan utama dalam kegiatan operasional distributor ialah pemilihan pemasok.UD Mega Timur Bajawa merupakan toko yang bergerak di bidang usaha retail, distribusi sembako.Pada toko ini, diketahui bahwa telur merupakan barang dengan permintaan tertinggi dari waktu kewaktu sehingga perlu diberikan perhatian khusus agar kualitas pelayanan kepada konsumen dapatdipertahankan. Oleh karena itu, penelitian ini dilakukan untuk menentukan pemasok bahan bakutelur yang terpilih beserta usulan prioritas pemilihannya. Pengumpulan data dilakukan melaluiwawancara, studi literatur, dan penyebaran kuesioner kepada ahli yang relevan. Permasalahan inidiselesaikan menggunakan metode penentuan keputusan multi kriteria atau Multi-Criteria Decision-Making (MCDM) yaitu Analytical Hierarchy Process (AHP) dengan bantuan aplikasi ExpertChoice. Berdasarkan hasil pengolahan data maka dapat disimpulkan usulan prioritas dari 3alternatif pemasok telur dimana pemasok 1 diketahui memiliki nilai akhi...
Jurnal Manajemen Transportasi & Logistik (JMTRANSLOG)
The Non-Operating Fixed Assets I Warehouse of Menes Baru substation used randomized storage that ... more The Non-Operating Fixed Assets I Warehouse of Menes Baru substation used randomized storage that caused a lot of different types materials were stacked on top of each other and placed in sparsed random locations created inefficient order picking process. To solve the problem, the facility layout design using dedicated storage concept is created to minimize the order picking distance at the ATTB I Warehouse of Menes Baru substation. This research was conducted in several stages. There were (1) identifying materials and the flow patterns, including Materials Handling Equipment , (2) determining storage methods and options, and (3) analyzing activities using Activity Relationship Chart and Activity Relationship Diagram. The result shows that the recommended flow pattern material for the ATTB I Warehouse of Menes Baru substation is a U-shaped model. In addition, based on the results of the numerical scenario comparison test of order picking distances, the proposed layout using the dedic...
Jurnal Manajemen Transportasi & Logistik (JMTRANSLOG)
Warehouses have an important role in the supply chain. The pharmaceutical industry is no exceptio... more Warehouses have an important role in the supply chain. The pharmaceutical industry is no exception. Pharmacy Warehouse functions as a place to store drugs and medical devices before being distributed to health facilities such as community health centers, clinics, and hospitals. One of the Pharmacy Warehouse Technical Implementation Units located in Dairi Regency, North Sumatra, has several problems that occur along its supply chain. These problems, among others, are related to time, cost, and the number of products shipped. In addition, there was also an increase in aggregate demand for drugs and medical devices in 2018-2019. This increase in demand reinforces the need for designing pharmaceutical supply chain performance measurements. In designing the supply chain performance measurement, the framework used is the Supply Chain Operational Reference (SCOR) which includes the plan, source, make, delivery, and return processes, which are then translated into a number of criteria based...
Matrik : Jurnal Manajemen dan Teknik Industri Produksi
Industri kelapa sawit merupakan sektor yang penting bagi perekonomian nasional Indonesia. Kelapa ... more Industri kelapa sawit merupakan sektor yang penting bagi perekonomian nasional Indonesia. Kelapa sawit dipahami sebagai salah satu komoditas pertanian yang strategis sehingga segala aspek yang mampu meningkatkan produksi kelapa sawit beserta produk turunannya menarik untuk diteliti. Penelitian ini fokus pada produksi Crude Palm Oil (CPO), Palm Kernel (PK), dan pendapatan Pabrik Kelapa Sawit (PKS) khususnya di Tanjung Seumantoh dengan memperhatikan suplai bahan baku berupa Tandan Buah Segar (TBS). Melihat bahwa pada periode Januari-Desember 2020, capaian produksi CPO dan PK lebih kecil dibandingkan target yang disebabkan oleh minimnya pasokan TBS dari masing-masing penyulai (supplier) sehingga dibutuhkan optimasi sistem produksi. Didahului dengan pengembangan model matematis yang menggambarkan keadaan nyata di lapangan, kemudian dilakukan sejumlah eksperimen dan uji skenario untuk mengetahui skema yang paling sesuai dalam kerangka pemenuhan target produksi PTPN I area Sumatera Utara....
A Genetic Algorithm Approach for Waste Collection Using Multi-trip Multi-period Capacitated Vehicle Routing Problem with Time Windows (MCVRPTW)
Proceedings of the International Conference on Industrial Engineering and Operations Management
BERKALA SAINSTEK
The plan to relocate the national capital (IKN) from DKI Jakarta to Kalimantan Island will soon b... more The plan to relocate the national capital (IKN) from DKI Jakarta to Kalimantan Island will soon be realized when the population relocation is initiated by workers, one of whom is from the central ministry sector. This has never been studied before regarding the need to change residence, so the factors that encourage or restrain workers from moving to IKN have not been identified. Ideally, the transfer of these workers to IKN is based on full willingness and awareness of the conditions of life that will be lived in the future. To find out how far the intention of Jakarta workers is to move to IKN, factor analysis is needed using the Structural Equation Modeling (SEM) method. The concept used to investigate these push, pull, and restraint factors is push-pull-mooring (PPM). These three factors are important to study to obtain a model structure that can be used as a direction for IKN development. In addition, this research is also intended to find out technical information related to t...
Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
The city's growing population is causing an increase in traffic demand for supply, mobility, ... more The city's growing population is causing an increase in traffic demand for supply, mobility, and reverse logistics areas. These are the challenges that participants in the logistics sector are facing, together with rising commodity demand for fundamental requirements. As a result, many scientists are driven to design logistics solutions to mitigate the impact of a growing population, which increases demand for logistics and supply chains, which also has an influence on the community's environment. However, thorough literature survey studies targeted at finding potential treatments for the management of supply chain disorders using bibliometric, network, and theme analyses are still few and limited. According to the findings of the investigation, the primary supply chain themes are provider logistics and reverse logistics. This research has various implications for reverse logistics in the FMCG industry. According to the research, suppliers must understand that implementing e...
Journal of Emerging Supply Chain, Clean Energy, and Process Engineering, Dec 31, 2022
Production costs consist of components that are directly attached to the product, including direc... more Production costs consist of components that are directly attached to the product, including direct and indirect costs. In determining production costs such as packaging costs, the usage of the traditional model is not always suitable shown by the possibility of overstated or understated conditions. This study aims to propose the implementation of the Activity-based Costing (ABC) system in calculating the cost of tea packaging and finding the differences compared to the traditional costing. The data used were based on the case of PTPN VII Gunung Dempo, South Sumatra, Indonesia. The results using the ABC system show that the total cost per unit for "BOPF" tea products is IDR 34,444.45, for "DUST" products is IDR 35,629.77, and for "DUST II" products is IDR 35,629.77. While the traditional system calculation shows that the total cost per unit for "BOPF" tea products is IDR 61,982.60, for "DUST" tea products is IDR 61,982.60, and for "DUST II" tea products is IDR 61,982.60. The strategy that can be applied to avoid possible losses in determining packaging costs due to incorrect cost calculations using the traditional system model is to implement Activity-based Costing.
LOGISTIK
Berdasarkan hasil on-desk verification pada 2 Juni 2021, ditemukan adanya overstock (bahan bakar ... more Berdasarkan hasil on-desk verification pada 2 Juni 2021, ditemukan adanya overstock (bahan bakar minyak) BBM bersubsidi yang cukup signifikan di PT KAI (Kereta Api Indonesia) pada masa pandemi Covid-19, yaitu 42,9% pada triwulan I tahun 2021 untuk jenis kereta penumpang. Tujuan dari penelitian ini adalah untuk mengetahui peramalan dengan metode statistik dan machine learning dalam menyelesaikan masalah overstock dengan mencari skenario alokasi BBM bersubsidi yang terbaik untuk PT KAI dengan benchmark pengukuran yang menghasilkan error terkecil menggunakan Mean Absolute Percentage Error (MAPE). Hasil percobaan menunjukkan bahwa metode eksponensial dengan nilai MAPE sebesar 7,37% baik dalam memprediksi alokasi KA penumpang PT KAI sebesar 8.474,52 dan 7.836,58 kiloliter untuk triwulan III dan IV tahun 2021, 7.246,65 dan 6.701,14 kiloliter untuk triwulan I dan II triwulan tahun 2022. Penelitian ini dilakukan dengan pertimbangan belum adanya penelitian sebelumnya yang memperkirakan kebut...
Indonesian Journal of Energy and Mineral
PT Kilang Pertamina Internasional, Refinery Unit (RU) VI Balongan merupakan salah satu kilang pen... more PT Kilang Pertamina Internasional, Refinery Unit (RU) VI Balongan merupakan salah satu kilang pengolahan crude oil menjadi produk-produk BBM, non BBM, dan produk lainnya yang dikelola PT Pertamina. Refinery Planning and Optimization (RPO) merupakan salah satu divisi di RU VI Ba-longan yang mengelola, mengatur, dan mengendalikan perencanaan dan operasional rantai pa-sok kilang secara efektif dan efisien. Di RU VI Balongan, terdapat kilang Residue Catalytic Cracking (RCC) yang diketahui memiliki perbedaan aktual yield dengan model matematis perhitungannya sehingga berpengaruh terhadap proses produksi. Mempertimbangkan kondisi ini, perlu dila-kukan perbaikan model existing menggunakan data terbaru untuk meminimasi deviasi antara yield perhitungan dan aktual sehingga batasan operasional RCC yang digunakan sebagai boundary value tidak dilanggar. Penelitian ini mencakup analisis faktor pengaruh data fisik kilang seperti suhu, kapasitas, dan lain lain terhadap hasil produksi di kilang RCC ...
Proceedings of the 1st International Conference on Contemporary Risk Studies, ICONIC-RS 2022, 31 March-1 April 2022, South Jakarta, DKI Jakarta, Indonesia
State electricity enterprise (PLN) as a state-owned enterprise in Indonesia is had and committed ... more State electricity enterprise (PLN) as a state-owned enterprise in Indonesia is had and committed to support government's efforts to reduce greenhouse gas (GHG) emissions and to implement Sustainable Development Goals (SDGs) by managing all environmental aspects. To achieve PLN's strategy in continuously providing the green-based energy and showing the evidence of compliance to the rules, it is necessary to evaluate its operational activities, including in the warehouse area by measuring the success of its green concept implementation. The evaluation was carried out by identifying the performance indicators currently implemented, determining the weight using the Analytical Hierarchy Process (AHP), assessing the productivity using the Objective Matrix (OMAX), and classifying the accomplishment with the Traffic Light System (TLS). Based on the data processing and analysis, there are 8 performance indicators found regarding the green warehouse concept: 2 good, 3 moderate, and 3 poor, they are related to waste, environmental management, emission control, building, materials, lighting energy consumption, handling equipment, and fuel use.
Proceedings of the 1st International Conference on Contemporary Risk Studies, ICONIC-RS 2022, 31 March-1 April 2022, South Jakarta, DKI Jakarta, Indonesia
We present the supply chain operational planning problem of an integrated furniture company locat... more We present the supply chain operational planning problem of an integrated furniture company located in Indonesia. We determine the location of the company's new facility considering demand location, coverage, and network to minimize movement costs of volumed-product. The objective is to decide optimal additional distribution center (DC) or factory allowing the company to be competitive in the greater market. Green Field Analysis (GFA) and Network Optimization (NO) of anyLogistix were used to find an optimal furniture supply chain network. GFA results reported that the new facility should be located in South Bali with a latitude point of-8.086 and a longitude point of 115.176 while NO preferred Scenario 1, build a DC generating a profit of IDR 45,755,640,179. Other alternatives would be Scenario 2, build a factory providing a profit of IDR 45,955,816,089. Operational risk comparison shows that it is better to follow the 2nd scenario.
Proceedings of the 1st International Conference on Contemporary Risk Studies, ICONIC-RS 2022, 31 March-1 April 2022, South Jakarta, DKI Jakarta, Indonesia
Covid-19 pandemic outbreak has disrupted many aspects of industries including oil and gas offshor... more Covid-19 pandemic outbreak has disrupted many aspects of industries including oil and gas offshore platforms operation. Oil and gas production platforms are heavily depended in fly in fly out employees. Living in a very limited space, demanding work, and living far away from family creates physical and emotional fatigues that can enhance accident. The Covid-19 pandemic puts additional strain to these workers in longer working schedules. All these factors may jeopardize the business continuity of oil and gas production facilities. Employee satisfaction is an important variable for business continuity. This paper proposes push pull mooring technique to analyze the employee switching behavior of offshore oil and gas production facilities in the pandemic time.
Applied Sciences
Event logs generated by Process-Aware Information Systems (PAIS) provide many opportunities for a... more Event logs generated by Process-Aware Information Systems (PAIS) provide many opportunities for analysis that are expected to help organizations optimize their business processes. The ability to monitor business processes proactively can allow an organization to achieve, maintain or enhance competitiveness in the market. Predictive Business Process Monitoring (PBPM) can provide measures such as the prediction of the remaining time of an ongoing process instance (case) by taking past activities in running process instances into account, as based on the event logs of previously completed process instances. With the prediction provided, we expect that organizations can respond quickly to deviations from the desired process. In the context of the growing popularity of deep learning and the need to utilize heterogeneous representation of data; in this study, we derived a new deep-learning approach that utilizes two types of data representation based on a parallel-structure model, which c...
Processes
Many ports worldwide continue to expand their capacity by developing a multiterminal system to ca... more Many ports worldwide continue to expand their capacity by developing a multiterminal system to catch up with the global containerized trade demand. However, this expansion strategy increases the demand for container exchange between terminals and their logistics facilities within a port, known as interterminal transport (ITT). ITT forms a complex transportation network in a large port, which must be managed efficiently given the economic and environmental implications. The use of trucks in ITT operations leads to the interterminal truck routing problem (ITTRP), which has been attracting increasing attention from researchers. One of the objectives of truck routing optimization in ITT is the minimization of empty-truck trips. Selection of the transport order (TO) based on the current truck location is critical in minimizing empty-truck trips. However, ITT entails not only transporting containers between terminals operated 24 h: in cases where containers need to be transported to a log...
Sensors
The continued growth of the volume of global containerized transport necessitates that most of th... more The continued growth of the volume of global containerized transport necessitates that most of the major ports in the world improve port productivity by investing in more interconnected terminals. The development of the multiterminal system escalates the complexity of the container transport process and increases the demand for container exchange between different terminals within a port, known as interterminal transport (ITT). Trucks are still the primary modes of freight transportation to transport containers among most terminals. A trucking company needs to consider proper truck routing planning because, based on several studies, it played an essential role in coordinating ITT flows. Furthermore, optimal truck routing in the context of ITT significantly affects port productivity and efficiency. The study of deep reinforcement learning in truck routing optimization is still limited. In this study, we propose deep reinforcement learning to provide truck routes of a given container ...
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Papers by yelita iskandar