Erma Suryani

• Doctor of Philosophy
• Professor (Associate) at Sepuluh Nopember Institute of Technology

This research proposes a comprehensive analysis of the environmental and economic impacts of electric vehicle (EVs) adoption using system dynamics modeling. A system dynamics framework is utilized to integrate various aspects of EVs, economy, environment, and impact of policies on those sectors. Stock and flow diagrams were used to model and predic...

This study examines the implementation of sustainable practices in Indonesia's national palm oil industry and investigates how it affects plantation productivity. The Indonesian Ministry of Agriculture launched the Indonesia Sustainable Palm Oil (ISPO) framework to guide both farmers and corporations. Additionally, major palm oil companies have ado...

The dynamic simulation model for economic analysis of solar energy in the new Indonesia's capital named IKN is a computer system designed to evaluate the viability of solar energy as a power source in the new capital being developed in East Kalimantan. The model aims to assess the economic feasibility of solar energy implementation, addressing cost...

Transportation users often face shortcomings, such as unreliable service causing uncertainty in transit, low quality of service, and loss of time due to road and highway congestion. This study aims to improve the livability of the transportation system by considering several factors. System dynamics is used as a model development method to analyze...

This research addresses the environmental dynamics of wind power plants and their impact on the economy and environment. A system dynamics framework is used as a tool for model development since it accommodates relationships between complex and nonlinear variables affecting the wind power plants and their impact on the economy and environment. The...

Climate change is becoming increasingly unpredictable. This also has an impact on agriculture, such as the increase in rice productivity. The internet of things is one of the latest technologies that can help increase land productivity. One of the uses of the Internet of things is to identify the temperature and rainfall. The problems currently fac...

Carbon dioxide is essential to the climate system and is crucial in increasing global greenhouse gas emissions. In several countries, one of the highest contributors to carbon emissions comes from burning fossil fuels for energy, supported by electricity consumption in industrial activities. Thus, using renewable energy and the rapid development of...

This research addresses the environmental dynamics of transport systems to increase its workability. The most influential factors on workability are security level, health factors, effectiveness, comfort, practicality, affordability, safety, and user perception. As a tool for model development, we utilized a system dynamics framework to accommodate...

Background: The food security policy is an effort to ensure stable food availability and stable access of the community to food. As the population increases, this will affect the fulfillment of food needs in the future. Therefore, increase in rice production is needed to support food security. Objective: Conduct an analysis of the factors affectin...

Indonesia merupakan negara kepulauan dengan berbagai macam makanan daerah yang beraneka macam, salah satunya adalah buah tangan/oleh-oleh. Namun, berbagai macam tantangan seperti persaingan bisnis dan pandemi COVID-19 berdampak cukup besar dalam industri pariwisata dan oleh-oleh. Usaha Mikro, Kecil, dan Menengah (UMKM) yang bergerak di sektor oleh-...

Mismanagement of soil nutrients, poor site selection of loose soil, steep slopes for agriculture, parallel contour plowing, ground cover removal, and slash-and-burn contribute to soil degradation and erosion. Therefore, developing strategies and policies related to improving productivity, production, and better resource management is important to a...

Road safety is one of the most crucial things in ensuring the comfort of road users. But every year, road accidents are commonplace. Based on WHO data, road accidents occupy the eighth position as the cause of death at all ages. The number of accidents in the city of Surabaya continues to increase every year. Based on data compiled by the Surabaya...

Discovery Shopping eCommerce (DSC) merupakan salah satu pendekatan bisnis digital dengan prinsip dasar menyediakan katalog informasi selengkap-lengkapnya terkait produk bagi konsumen yang harus disusun dalam sebuah sistem user friendly. Pendekatan tersebut saat ini masih belum familiar diimplementasikan pada Usaha Mikro, Kecil, dan Menengah (UMKM),...

Maize demand for feed, industry, and consumption is increasing in line with the increase in population and industry, while the supply of maize does not meet the demand. Therefore, it is necessary to identify the significant variables that affect maize cultivation and scenarios to increase maize production and farmers’ income using simulation model....

Background: Some studies have shown that Return on Total Assets is a strategy to increase market share. Other studies have also shown that social media like WeChat can increase market share. However, no studies have considered Instagram engagement in increasing market share. Objective: This study aims to identify variable linkage that increases ma...

Transportation Problem (TP) is correlated with product distribution between supply locations and demand locations. TP aims to minimize the total transportation cost, and TP is one of the most important challenges in optimization. To solve the TP, Initial Basic Feasible Solution (IBFS) is a crucial step to determine the Optimal Solution. However, so...

UMKM atau Usaha Mikro, Kecil, Menengah merupakan salah satu peran penting dalam perekonomian negara. Semakin berkembangnya teknologi informasi, teknik online marketing semakin banyak dilakukan. Di Jawa Timur saat ini, peningkatan permintaan barang interior seperti wallpaper serta gorden akan membuat kompetisi antar retail yang lainnya. Saat ini, us...

Perkembangan UMKM di Indonesia dewasa ini semakin marak dan pada akhir tahun 2020 telah mencapai 64.2 juta unit. Perkembangan UMKM ini juga diiringi dengan berjalan nya transformasi digital melalui platform e-commerce, media sosial, dan kanal digital lain nya. Transformasi digital ini dialami oleh berbagai UMKM di Indonesia, tetapi transformasi ini...

Dalam kondisi ekonomi yang terpuruk akibat pandemi COVID-19 ini, Usaha Mikro, Kecil, dan Menengah (UMKM) memiliki potensi yang sangat besar untuk membantu membangkitkan perekonomian. Salah satunya adalah UMKM di bidang pariwisata jasa selam. Namun, selama ini peminat selam rekreasional masih cukup rendah karena tidak semua orang mengetahui keindaha...

Internet of Things is the use of new technology to increase the land productivity. One of the features of the internet of things is that it can determine temperature, soil quality (pH), rainfall, pests and humidity. The current problem is the difficulty of farmers in determining planting and pest control. In this study, an IoT will be designed to d...

The provision of rice in sufficient quantities and affordable prices is the main objective of agricultural development. However, there are higher margins of inequality for traders in the rice supply chain, making farmers and consumers at a disadvantage. Previous research has overcome this problem by focusing on milling only in the rice milling indu...

Inaccurate estimates of demand for goods from (Institut Technologi Sepuluh Nopember) ITS cause the absorption rate for procurement of goods to remain low. Planning logistics procurement and budget projections are critical. The planning process will be more efficient with an integrated system. This study aims to develop a conceptual model of a syste...

Cultivation business actors have a vital role in improving the current economy. However, the condition of business actors in the fisheries sector can still be said to have not reached the limit of prosperity due to the lack of knowledge, processing, marketing, and technology for these business actors. Business actors in the fisheries sector often e...

The growth of vehicle use in Indonesia continues to increase, which is in line with the population growth. The increase in the number of vehicles, mostly using fossil fuels, has an impact on increasing pollution. Transportation is the biggest contributor to pollution. Therefore, it is necessary to increase the livability of the transportation syste...

Background: Commuting time is highly influenced by traffic congestion. System dynamics simulation can help identify the cause of traffic problems to improve travel time efficiency. Objective: This study aims to reduce traffic congestion and minimise commuting time efficiency using system dynamics simulation and scenarios. The developed scenarios i...

Sugarcane as a raw material for producing sugar is a strategic agricultural commudity in economy and sugar industry. With the increase of population, the consumption and demand for sugar will also increase and this causes domestic sugar production to be unfulfilled. Some problem that arise in this commodity include sugarcane productivity and yields...

To achieve the self-sufficiency of salt, prices need to be considered. This study develops a dynamic simulation model of salt supply chains to analyze the significant factors affecting prices from upstream to Indonesia's downstream levels. A set of dynamic simulation models is developed to achieve competitive prices using system dynamics. Furthermo...

This study aimed to improve the value of the rice supply chain through the use of a system dynamics (SD) model. SD was used since it is able to accommodate internal and external factors that influence the value of the rice supply chain. The simulation results showed that increasing the value of the rice supply chain can be achieved by increasing th...

Traffic congestion has had an impact on longer travel time and increased operational costs because vehicle speeds do not reach the speeds designed. Therefore, this research aims to decrease congestion costs using transit-oriented development (TOD). TOD is the integration of land use and transit to create a community that can walk within walking dis...

This study aims to develop a scenario model to reduce traffic congestion using intelligent transportation systems (ITS). ITS is an application of advanced technology in the fields of electronics, computers, and telecommunications to make transportation infrastructure and facilities more informative, smooth, safe, and comfortable. It encompasses the...

This paper is designed to evaluate and improve the effectiveness of transportation systems and reduce traffic congestion through the use of simulation models and scenario development. A system dynamics framework is used to test and evaluate the alternatives of future strategies for the city of Surabaya, Indonesia. Some factors affecting the effecti...

Many real applications use the transportation problems for finding the optimal solution for product shipment from supply to demand. The transportation problem (TP) is related to delivering some products from the supply to the demand. The initial basic feasible solution (IBFS) is a significant step to achieve the minimal total cost (optimal solution...

p class="Abstrak">Perkembangan rumah sakit di Indonesia semakin meningkat, sejak tahun 2012 sampai 2018 mengalami peningkatan dengan rata – rata 5.2%. Tentunya hal tersebut memiliki dampak terhadap daya saing yang lebih kompetitif. Kebijakan pemerintah Indonesia yang mengharuskan rumah sakit bekerja sama dengan Jaminan Kesehatan Nasional (JKN) guna...

This paper addresses problem solving and complex decision making in the management of transportation operations under environmental dynamics through the use of models and scenarios. A system dynamics simulation was used to model and analyze the efficiency of transportation systems as a tool for decision support to improve efficiency. Transportation...

The authors have withdrawn this preprint due to author disagreement.

This paper aims to develop an urban transportation planning through the use of system dynamics simulation model. This planning includes congestion mitigation through demand and capacity management, the improvement of public transport sector, and the urban mobility improvement. System dynamics simulation model was used to test and evaluate some alte...

Purpose This paper aims to address the urban mobility and traffic congestion problem under environmental dynamics to improve mobility and reduce traffic congestion using system dynamics (SD) simulation and scenarios. Design/methodology/approach SD simulation was used to analyze urban mobility and traffic congestion. Data were collected from the Tr...

Increasing the population of the population increased demand for agricultural production, so this has an impact on reducing the use of agricultural land. Identification of land suitability is important so that there is an evaluation of land use to increase land productivity now and in the future. the purpose of this study is to evaluate the suitabi...

This study outlines the recent landscape of workaround research as regards the steps of workaround creation by Alter [1]. A workaround happens when a user does a course of actions beyond the formal system to achieve certain goals. The actions could be bypassing internal system procedures or breaking the established policies in response to the perce...

Purpose This paper aims to address the corn productivity and production problem under the environmental dynamics to improve the productivity and production through the use of models and scenarios. Design/methodology/approach System dynamics simulation model is implemented to develop harvested area, productivity and production models. To improve pr...

Urban service reliability represents the level of service in the aspects of travel time, arrival time, and seat availability from the user's perspective. Service reliability focuses on the demand and supply sides of transportation systems. The supply side consists of services provided by the operator, hence it affects the travel time. Meanwhile, de...

Transportation Problem (TP) deals with cost planning for delivering the product from the source to the destination and Initial Basic Feasible Solution (IBFS) is presented to find the way out in obtaining an optimal solution. IBFS is an important element to reach an optimal result. The previous methods related to it did not always provide the satisf...

An enterprise not only needs information about the time-based service performance (reliability and maintenance of services) but also need to know the effect of time variables on the dynamic of both service performance and demand. Therefore, this article proposes the computation of reliability and maintainability as the service performance of the en...

An enterprise not only needs information about the time-based service performance (reliability and maintenance of services) but also need to know the effect of time variables on the dynamic of both service performance and demand. Therefore, this article proposes the computation of reliability and maintainability as the service performance of the en...

Corn demand in Indonesia is quite high; this commodity is useful as food, as animal feed ingredients, and as industrial raw materials. The main problem in corn farming is not enough production to meet the demand as staple foods and industry. Therefore, it is necessary to increase the amount of corn production to meet demand as well as to increase f...

Background: Every year, the number of T-Cash users is increasing significantly. However, the increase is not in sync with the number of T-Cash transactions. In this year, it was noted that active T-Cash users were only 35%. Some clinical studies have established an assessment of the quality of services, there are several dimensions assessed accordi...

Reliability reflects the level of ease of people and goods to travel. Reliability relates with the variability of travel time, speed, and system usage and transportation system capacity. The higher the capacity of the system and the faster the travel time, the higher the level of reliability of the transportation system, so that it can reduce traff...

The area of Indonesian rice fields in 2016 reached 8.19 million hectares (ha), an increase of 1.16% from the previous year, this number comprising 4.78 million ha of irrigated rice fields and 3.4 million ha of non-irrigated rice fields. In 2017, especially in East Java, the harvest area is 2,278,460 hectares, and rice production is 13,633,701 tons....

E-money is an embodiment of a modern banking system that uses a means of payment using cards or applications that are already connected to a bank account. Every year e-money users increase significantly, but the increase is not accompanied by an increase in transactions made using e-money. Last year, it was noted that e-money users were only 35% ac...

The country of Indonesia is one country that has abundant natural resources and has enormous potential in the agricultural sector. One of the sub-sectors in agriculture in Indonesia is food crops, this food crop sub-sector is divided into two categories, namely rice and secondary crops, one of which is widely cultivated is corn. In terms of organic...

Information technology development nowadays has brought new colors in the higher education learning process. In Indonesia, the current trend showed a higher use of CMS to support the existing conventional learning method in the classrooms. This paper attempts to understand the characteristics of CMS implementation based on a survey at several highe...

Pertumbukan ekonomi yang sangat tinggi menimbulkan dampak perpindahan penduduk dari pedesaan ke perkotaan. Hal ini mengakibatkan pertumbuhan penduduk di perkotaan dalam 20 tahun terakhir rata-rata mencapai kisaran 3-5%. berdampak lebih tinggi dari pertumbuhan penduduk nasional yang rata-rata sebesar 2%. Perubahan tersebut ditandai dengan meningkatn...

Pertumbukan ekonomi yang sangat tinggi menimbulkan dampak perpindahan penduduk dari pedesaan ke perkotaan. Hal ini mengakibatkan pertumbuhan penduduk di perkotaan dalam 20 tahun terakhir rata-rata mencapai kisaran 3-5%. berdampak lebih tinggi dari pertumbuhan penduduk nasional yang rata-rata sebesar 2%. Perubahan tersebut ditandai dengan meningkatn...

One of the energy problems in Indonesia is uneven electrification ratio. According to PT. PLN (Persero) East Java Distribution, Madura Island has the lowest electrification ratio in East Java, which is 59.02%. At present, Madura gets their electricity supply from Java Island through 2 high voltage sea cable circuit 150.000 volts with 2x100 MW capac...

Congestion can be recognized through roads filled with cars, trucks, buses and sidewalks filled with pedestrians. It usually relates to an excess of vehicles at a particular time resulting in lower speeds, sometimes much slower than normal speeds. Public transportation is a vital element in solving the congestion problem in the city. In Indonesia,...

Multiyear construction project is one of the riskiest project due to uncertainty and dynamic economic condition. In multi-years project, cost escalation is inevitable because during construction period various risk factors such as increasing of labor cost, materials cost, energy cost, and equipment cost will affect the costs of the projects. This p...

The main problem of the electrical operational systems in Indonesia is how to maintain the continuity of effective and efficient services to the customers and meet the supply and demand for electrical power, particularly a lot of islands area in Indonesia are far distant from the power generation sources. Based on these problems, it is cleared that...

National milk requirement is expected to increase as a result of population growth and the improvement of public awareness of nutrition, especially animal protein. In addition, the increase in household income will boost domestic consumption of milk. Public awareness of milk consumption, pushing milk as an economic commodity that has a strategic va...

Multiyear construction project is one of the riskiest project due to uncertainty and dynamic economic condition. In multi-years project, cost escalation is inevitable because during construction period various risk factors such as increasing of labor cost, materials cost, energy cost, and equipment cost will affect the costs of the projects. This p...

One of the Indonesia’s problem as an archipelago is uneven electrification ratio in the entire of archipelago. Especially for small and isolated island are not effectively to build a large power plant due the ratio between population and investment are immense. In here, a strategy to increase the electrification ratio in the islands is a challenge...

 Electrification Ratio in East Java (Indonesia) has reached 86.67% at the end of 2015 due to in Madura island only 60.55% who have received electricity supply from PLN. The topography of Madura which far-flung distances per village, as well as the small number of households in the village are being constraint in build up the electricity infrastruc...

Abstrak Elemen-elemen sistem penyusun rantai pasok PT XYZ pada penelitian ini terdiri dari supplier, produsen, dan konsumen. Pada rantai pasok produsen, produksi minyak goreng menglami deficit terhadap permintaan minyak goreng dalam negeri. Hal tersebut dikarenakan adanya faktor penurunan produktivitas seperti pengaruh jenis bibit yang digunakan, u...

Food security is a cross-cutting issue which has become a national issue as the impact of food insecurity in several regions in Indonesia. Food Logistics Systems focuses on determining the location of the farm, to delivery points and distribution centers of commodities that can improve system performance food logistics. In this case some of the fac...

The Ministry of Education Indonesia held a national examination for high school students every year with the aim of assessing the achievement of competency standards on specific subjects nationally and as the basis of selection into the next education level. Fraud in paper-based implementation of National Examination often found, although it can n...

Online customer reviews have important role in buying decision process. Nowadays, there are a lot of customer reviews available in online marketplace so that customer can read those reviews for better understanding about product or service that they will purchase. Customer online reviews become important complementary information besides product de...