Page 8 (data 211 to 240 of 381) | Displayed ini 30 data/page
<< PREV 1 2 3 4 5 6 7 8 9 10 11 12 13 NEXT >>

211	Engineering	ABS-408
LSTM and Word Embedding : Classification and Prediction of Puskesmas Reviews Via Twitter Tukino 1,a*) , Agustia Hananto2,b), Rizki Aulia Nanda3,c) Elfina Novalia 4,d) , Eko Sediyono 5,e), Jabar Sanjaya 6,f) An initial level of community service for the benefit of the entire community is provided by the presence of a Community Health Center in a subdistrict or village. Therefore, in an attempt to improve service quality, patient feedback regarding service performance is required. patient input or reviews on social media platforms like WhatsApp, Facebook, Instagram, and Twitter. However, opinions expressed on social media are unstructured texts with a high volume- this makes it difficult to analyze the text and prevents one from comparing the quality of care provided by different community health centers. Aside from that, some community health centers do not have a single website that ranks health centers according to user interest, aesthetic appeal, and operational effectiveness. Consequently, the goal of this study is to categorize and display sentiment analysis from Twitter at Community Health Centers. Five factors are the focus of the scope: health worker skills, employee friendliness, finance, mechanisms, and administrative services. For text mining, word embedding makes use of word2v, fastex, the Bi-LSTM model, and the adadelta and adamax optimizers. The model created is assessed using a confusion matrix to determine the model^s level of accuracy in patient review classification and prediction. Abstract An initial level of community service for the benefit of the entire community is provided by the presence of a Community Health Center in a subdistrict or village. Therefore, in an attempt to improve service quality, patient feedback regarding service performance is required. patient input or reviews on social media platforms like WhatsApp, Facebook, Instagram, and Twitter. However, opinions expressed on social media are unstructured texts with a high volume- this makes it difficult to analyze the text and prevents one from comparing the quality of care provided by different community health centers. Aside from that, some community health centers do not have a single website that ranks health centers according to user interest, aesthetic appeal, and operational effectiveness. Consequently, the goal of this study is to categorize and display sentiment analysis from Twitter at Community Health Centers. Five factors are the focus of the scope: health worker skills, employee friendliness, finance, mechanisms, and administrative services. For text mining, word embedding makes use of word2v, fastex, the Bi-LSTM model, and the adadelta and adamax optimizers. The model created is assessed using a confusion matrix to determine the model^s level of accuracy in patient review classification and prediction. Keywords: Text, Pre-Processing, LSTM, Classification, prediction, twitter, Optimizer Share Link | Plain Format | Corresponding Author (tukino paryono paryono)

212	Engineering	ABS-409
UI / UX Design of AlterOmah Architect Consultation Booking Application Using Design Thinking Putri Java Esya Ayu, Agus Setiawan, Pristi Sukmasetya Engineering Faculty, Informatics Engineering Department, Universitas Muhammadiyah Magelang, Magelang, Indonesia Abstract Architectural services have leveraged technological advancements to engage in diverse business practices, notably through the utilization of social media platforms. Marketing architectural services via social media introduces several challenges for consumers, including difficulties in locating local architects, insufficient product information, and concerns regarding transaction security. This research aims to address these issues by designing a user interface (UI) and user experience (UX) for a consultation booking application with architects. Employing the Design Thinking method with stages such as empathize, define, ideate, prototype, and test, the research culminates in the development of the alteromah application^s UI UX design. Usability testing, incorporating task scenarios and the System Usability Scale (SUS), reveals a score of 78.5 out of 100, categorizing the alteromah application as Grade B, indicating a Good rating in terms of learnability and user satisfaction. Keywords: Design Thinking- Architecture- User Interface- Mobile Application- System Usability Scale Share Link | Plain Format | Corresponding Author (Putri Java Esya Ayu)

213	Engineering	ABS-412
APPLICATION OF KANSEI ENGINEERING METHOD IN PACKAGING DESIGN FOR COW SKIN CRACKERS (CASE STUDY: APHE COW SKIN CRACKERS FACTORY) Afif Hakim (1), Ilham Abriansyah (2), Ade Astuti (3), Annisa Indah Pratiwi (4) (1,2,3,4) Universitas Buana Perjuangan Karawang Abstract Micro, Small, Medium Enterprises can help the country^s economy as well as create jobs. In general, consumers prefer packaging that looks nice, neat, closed, although this of course makes the price more expensive. In this study, the packaging design was improved using a kansei engineering approach. Kansei Engineering shows how consumer product needs, emotions and expectations are translated into design solutions and product parameters. This research focuses on achieving certain objectives, namely adjusting the redesign of packaging designs to meet consumer needs which are expected to fulfill consumer desires and increase product selling power. After obtaining the results from the processing of QTT I in making the APHE cow skin cracker packaging design, the packaging has a handle. The packaging has a height of 22 cm with a diameter of 10 cm. All parts of the package are covered with pictures to make it look more attractive to consumers, except for the part of the window which is made transparent to make it easier for consumers to see the contents of the package, namely the cow skin crackers. A total of 40 single kansei words resulting from the meaning approach are used as a reference for designing APHE cow skin cracker packaging. The result of the factor analysis was that there were ten factors with 35 kansei words in pairs. The sample used is 20 samples with five items and the number of categories was divided into 21 categories. Keywords: kansei engneering, packaging design, kansei words, factor analysis Share Link | Plain Format | Corresponding Author (Afif Hakim)

214	Engineering	ABS-414
DATA SECURITY ANALYSIS ON GMAIL CLOUD COMPUTING INFORMATION SYSTEM IN INDONESIA Shofa Shofiah Hilabi(a*), Tahara Abizar RG(b), Ahmad Fauzi(c),Tukino(d),Dhinda Rizqa(e),Nasywaa Aulia RP,(f),Naura Kamelia S (g),Adrie Subagja (h),Azril Yasa A(i) (a) Information System, Universitas Buana Perjuangan Karawang Jl. HS.Ronggo Waluyo, Puseurjaya, Telukjambe Timur, Karawang, Jawa Barat 41361, Indonesia Abstract Data security interference is a problem that is often experienced by users, because every user wants a security situation that is always conducive. Various efforts are made for security on a system. The problem that occurs today is that data security in the system often provides opportunities for users to commit cybercrimes. While the Gmail Cloud Computing information system is only private and can only be used by related users. This research is made to eliminate or minimize the occurrence of sustainability problems that occur. This research uses literacy study and survey methods using questionnaires related to discussions about the Gmail Cloud Computing information system, using Data Loss Prevention (DLP) in system security. The results of this study are in the form of system security data that is influenced by various factors, including system requirements, technical implementation, and characteristics of the Data Loss Prevention (DLP) solution used. With these results, the Gmail Cloud Computing Information System can increase the efficiency and convenience of use as an information medium. Keywords: Security intrusion, Cloud Computing, Account Hacking, Spam, Data Loss Prevention Share Link | Plain Format | Corresponding Author (Shofa Shofiah Hilabi)

215	Engineering	ABS-160
Classification To Predict Credit Card Application Acceptance Using Support Vector Machine Asfan Muqtadir (*), Andik Adi Suryanto, Amaludin Arifia, Fitroh Amaluddin Faculty of Enginering, Department of Informatics Engineering, PGRI Ronggolawe University Abstract Credit card creation is one of the banking services that has a large source of risk for business operations. The process of granting credit card functions includes application and customer profile analysis. Customer profile analysis can be determined based on many factors such as savings owned, transfers or cash flow from customer accounts, and income from customer credit applications. This is done as an implementation of the SVM algorithm for the classification of credit card application acceptance using data taken from the Kaggle website. In this research, the SVM method is used with an additional function, namely a kernel trick. From the evaluation of the classification model along with the four kernel functions using the confusion matrix, it is found that the sigmoid kernel has the highest precision and recall percentage of 0.982 and recall 0.985, while the highest accuracy is produced by the Polynomial Kernel of 98%. Keywords: classification- Support Vector Machine- kernel trick- confusion matrix Share Link | Plain Format | Corresponding Author (Asfan Muqtadir)

216	Engineering	ABS-161
Examining Service Quality as a Mediator of Location Strategy, Process Strategy, and Service Design on College Students^ Satisfaction through Structural Equation Modelling Tining Haryanti Universitas Muhammadiyah Surabaya Abstract The organization needs to pay attention to the suitability of its strategy in achieving customer satisfaction to ensure that its products or services meet user expectations. This research aims to determine Service Quality as a mediator for Location Strategy, Process Strategy, and Service Design strategies on the satisfaction of Business School students. The research subjects are Business School students, with a total of 313 respondents. This study utilizes Structural Equation Modeling (SEM) analysis with a structural equation model formulated as follows: Y = 0.054 X1 + 0.319 X2 + 0.626 X3- Z = 0.105 X1 + 0.145 X2 + 0.577 X3- Z = 0.011 X1 + 0.063 X2 + 0.124 X3- Z = 0.195 Y. The results indicate that Location Strategy, Process Strategy, and Service Design variables collectively influence 83.9% of the Service Quality variable and 87.1% of the Customer Satisfaction variable. Service Design emerges as the most significant predictor of Service Quality with a direct effect of 0.626 and a probability of 0.002, and of Customer Satisfaction with a total effect of 0.701. These findings imply practical implications for the management of Private Business Schools, suggesting a need to maintain and enhance Design Services while making improvements to Location Strategy and Process Strategy to enhance Service Quality and Customer Satisfaction. Keywords: Location Strategy, Process Strategy, Service Design, Service Quality, Customer Satisfaction, Structural Equation Modelling Share Link | Plain Format | Corresponding Author (Tining Haryanti)

217	Engineering	ABS-162
OLIGOCENE-MIOCENE CHRONOSTRATIGRAPHY DEDUCED FROM CALCAREOUS NANNOFOSSIL IN TUBAN AREA, NORTH EAST JAVA BASIN Salsabila Reno, Rendy, Dewi Syavitri, Risma Amalia Trisakti University Abstract Calcareous nannofossil biostratigraphy from 125 rock samples of wells SR-1 and SR-2 in the Tuban area, East Java were analyzed to reconstruct the chronostratigraphy of the north East Java Basin. These two wells are located in the Rembang Zone and the lithological unit is part of the Kujung and Ngimbang Formation. This research aims to determine the age of the SR-1 and SR-2 wells, the timing of unconformity, and determine the chronostratigraphic framework of the depositional history of the study area. The samples for this study were prepared using the smear slide method and a polarized microscope was used for the determination of the calcareous nannofossils assemblages, especially the distribution of index species. Based on biostratigraphic analysis, the age of the lithological unit in SR-1 is NP23-NP24 of early-late Oligocene and for SR-2 is NP23-NN4 of early Oligocene to early Miocene. The unconformity is only detected in SR-2, characterized by missing NN1 and NN2. The interpretation of the chronostratigraphic chart confirms that the oldest known deposition process in the area starts from NP23-NP25, in which the transgressive period due to the global sea level change rises during the ^Late Oligocene Warmth Event^. After that, an unconformity occurred at the NN1-NN2 caused by the Mi-1 Glaciation in the transition of the Oligo-Miocene Epoch. The deposition resumed at NN3-NN4 of the early Miocene during the transgressive period during the Mid-Miocene Climatic Optimum. This research hopefully can be useful and contribute to oil and gas exploration studies, as well as be used as a reference for biostratigraphy for further study. Keywords: North East Java Basin, Calcareous Nannofossil, Biostratigraphy, Chronostratigraphy Share Link | Plain Format | Corresponding Author (Salsabila Reno)

218	Engineering	ABS-164
The PSC Cost Recovery Analysis- the Comparison Between Several Scenarios of an Oil Producing Field in Indonesia Mustamina Maulani, Andry Prima, Asri Nugrahanti, Cahaya Rosyidan, Lisa Samura, Bayu Satiyawira, Widia Yanti Universitas Trisakti Abstract The Production Sharing Contract (PSC) is a pivotal mechanism governing profit-sharing in oil and gas extraction, outlining the distribution of profits between the government and contractor companies. This sharing is contingent on deducting cost recovery, a crucial element in collaboration agreements within the upstream oil and gas sector. Efficient cost recovery management is essential for both the state and contractors. Assessing the efficacy of this contractual framework, a comprehensive analysis explores three field development scenarios within the XYZ field. The first scenario involves 5 infill wells and 3 workovers. The second scenario expands on the first scenario with an additional 3 infill wells, and the third scenario further advances with 2 extra infill wells and 2 workovers. Upon evaluating the implications, the third scenario proves to be the most lucrative, boasting the highest Net Present Value (NPV) for the contractor at 5,442 million USD compared to other scenarios. The cumulative forecast predicts oil production of 2,185 thousand barrels from 2021 to 2035, generating a gross revenue of 131.1044 million USD. Notably, the Internal Rate of Return (IRR) is commendable at 26.21%, exceeding the Minimum Acceptable Rate of Return (MARR) set at 15%, with a Payback Period of 4.30 years. Moreover, the sensitivity analysis of the responsiveness of economic parameters and their impact on NPV and IRR values within the project. Keywords such as IRR, NPV, PSC Cost Recovery, and Sensitivity Analysis encapsulate the essence of this study, offering a holistic understanding of the dynamics in oil and gas mining ventures. Keywords: IRR, NPV, PSC Cost Recovery, and Sensitivity Analysis Share Link | Plain Format | Corresponding Author (Mustamina Maulani)

219	Engineering	ABS-165
The Effect of Building With Nature Structures on The Estuary Mitigation: Study Case Muara Beting Beach Siska Wulandari (1), Eka Oktariyanto Nugroho (2), Muhammad Syahril Badri Kusuma (2), Joko Nugroho (2), Arno Adi Kuntoro (2), M Cahyono (2), Widyaningtias (2), Nita Yuanita (3), Alamsyah Kurniawan (3), Dian Rosleine (4), Alfandias Saurena (5) and Fatma Nurkhaerani (6) (1)Magister Study Program of Water Resource Engineering, Study Program of Civil Engineering, Bandung Institute of Technology, Indonesia (2) Water Resources Engineering Research Group, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Indonesia (3) Coastal Engineering Research Group, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Indonesia (4) Ecology Research Group, School of Life Sciences and Technology, Institut Teknologi Bandung, Indonesia (5) Ministry of Public Works and Housing, Jalan Pattimura 20, Jakarta, Indonesia (6) Faculty of Engineering, Singaperbangsa University Karawang, Indonesia Abstract Erosion has become a big problem in the Muara Beting coastal area, Indonesia. The coastal erosion processes gradually affect the gradual decrease of mangrove land. That process causes the land to be extremely eroded and become closer to the Citarum River. The seawater intrusion occurs within the decreasing land mangroves. It creates a serious problem with freshwater needs. If erosion persists, the increased seawater intrusion might result in the convergence of the pond area with the Citarum River. This research aims to simulate how the ^Building with Nature^ building can be applied as a mitigation strategy. Data was collected through field surveys, satellite image analysis, and library observations to evaluate the impact of the proposed solutions. The simulations used Delft3D software with bathymetry, sediment characteristics, wind, tide, and discharge input data. Apart from simulating natural conditions, several scenarios were also arranged based on the placement of permeable structures combined with the floodway. The best scenario was selected from several simulated scenarios where sedimentation could form in the eroded area. This study^s findings will be intended to assist Muara Beting^s coastal community in reconstructing pond land that has been harmed by coastal erosion, allowing the locals to carry on with their pond-related livelihoods. Keywords: Building with Nature- coastal erosion- mangroves- mitigation- permeable structures Share Link | Plain Format | Corresponding Author (Siska Wulandari)

220	Engineering	ABS-423
Morphometric Analysis for Sustainable River Management: A Case Study of Ciujung Watershed, Banten, Indonesia Novi Triany (a*), Muhammad Burhannudinnur (a), Aisha Averrelita Fauzia Jannah (a), Khoirul Arifin Syaifullah(a), Triatmojo Ajiwijaya (a), Himmes Fitra Yuda (a), Suherman Dwi Nuryana (a), Benyamin (a) a) Geological Engineering, Faculty of Earth and Energy Technology, Universitas Trisakti Jl. Kyai Tapa No.1, Grogol, Jakarta Barat, Jakarta, 11440, Indonesia *novi.triany[at]trisakti.ac.id Abstract Ciujung watershed is located in Banten province, Indonesia. The Ciujung watershed is one of the watersheds that have a significant area coverage, such as Serang, Lebak, and the eastern part of Pandeglang. These areas are developing both in terms of population growth and infrastructure. Therefore, a more in-depth study of the Ciujung watershed, namely morphometric studies, is needed to optimize the utilization of the river^s renewable natural resources and mitigate potential flood hazards in the watershed area. The method used is remote sensing based on DEMNAS satellite data using QGis software. The parameters analyzed were watershed shape, watershed area, river branch ratio, and river density. The results show that the Ciujung watershed is divided into 14 sub-watersheds. In general, the sub-watersheds have a bird feather shape, and some are radial and parallel, which causes some research areas to be very at risk of flooding. From the condition of river branching, most areas are unaffected by deformation. A small part of the deformed area occurs in the middle area of the Ciujung watershed. This is interpreted to be related to tectonic activity. The drainage density shows that the Ciujung watershed is based on resistant rocks and materials, so it is easily eroded and causes siltation of the river in the downstream area, which can trigger flooding. Keywords: Ciujung watershed- Morphometry- Remote sensing method Share Link | Plain Format | Corresponding Author (Novi Triany)

221	Engineering	ABS-169
Impact of Debris Flow on River Morphology using HEC-RAS 6.4.1 in Miu River, Sigi Regency, Central Sulawesi Province Gading Komala Pramesi (a*), Joko Nugroho (b), Isnaeni Mudi Hartanto(c) a) Magister Study Program of Water Resource Management, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology. b) Water Resources Engineering Research Group, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology c) Ministry of Public Works and Housing, Republic of Indonesia Abstract On September 28, 2018, a devastating earthquake with a magnitude 7.5 struck approximately 80 km North of Palu City in Central Sulawesi. The landslides triggered by the earthquake, tsunami, liquefaction. Landslides had a profound impact on local communities, economic, and infrastructure. There are many large-scale slope failures and debris flow in the Miu River basin. Accurate prediction of debris flow impact on river systems is essential for effective hazard assessment and mitigation planning. This paper focuses on a flow modeling techniques in HEC-RAS software for predicting debris flow. The data used are rainfall data, geometric, and sediment data. The results indicate that debris flow has significant impacts on river stability. The combined effects of changes in channel morphology, bed stability, and bank erosion can disrupt the equilibrium of the river system and compromise its overall stability. One potential strategy to reduce debris flow in the Miu River is construction of a consolidation dam. Consolidation dam is designed to trap and retain debris materials, preventing them from being transported downstream. This will contribute to the preservation of the river ecosystem, the protection of infrastructure, and the well-being of local communities that depend on the river for various economic and social activities. Keywords: Debris Flow, HEC-RAS, River Morphology, Consolidation Dam Share Link | Plain Format | Corresponding Author (Gading Komala Pramesi)

222	Engineering	ABS-170
Modeling of an electrically driven PEM fuel cell bus Hamit Solmaz1, Turan Alp Arslan2, Tolga Kocakulak3 1Automotive Engineering Department, Faculty of Technology, Gazi University, Ankara, Turkey 2Automotive Engineering Department, Faculty of Technology, Afyon Kocatepe University, Afyonkarahisar, Turkey 3Burdur Mehmet Akif Ersoy University, Vocational High School of Technical Sciences, Burdur, Turkey Abstract When the literature and the goals of the leading companies in the automotive industry are examined, it is seen that the transition to electrification and renewable energy sources in the automotive industry is inevitable. It is known that the most ideal renewable energy source for mobile systems is hydrogen. The most efficient conversion of hydrogen into electrical energy occurs with proton exchange fuel cells. Energy efficiency and environmental pollution factors are of great importance in transportation. The use of public transportation plays a major role in improving these factors. In this study, the use of proton exchange fuel cells on buses used in urban public transportation and the effects of the bus and its parameters on energy efficiency and hydrogen consumption were examined. Hydrogen consumption and performance parameters were examined and evaluated in detail on the created bus model, depending on vehicle parameters and diffirent driving conditions. Models of the power, linear vehicle, control and energy systems of the PEM fuel cell bus were created in the Matlab/Simulink environment. In the power system model, the electric motor characteristic map is used. Vehicle speed control is provided by PID controls. In the vehicle linear model, a model of the resistance forces acting on the vehicle was created. In the energy system, there is a fuel cell system and battery pack model. The main energy source of the bus energy system is the hydrogen and fuel cell stack. A battery pack was used to balance the voltage and meet sudden power needs. Under different bus parameters and driving conditions: average hydrogen consumption, fuel cell efficiency, bus range value. Average hydrogen consumption, fuel cell efficiency and bus range values under different bus parameters and driving conditions will be obtained and explained in detail. Studies are continuing for the results section. Keywords: PEM fuel cell, electric bus, hydrogen, modelling Share Link | Plain Format | Corresponding Author (Hamit Solmaz)

223	Engineering	ABS-427
Predicting Studio Thermal Comfort Resulting from Window Design Using CFD Method Ahmad Maulana S1, Rosyida Permatasari1, Popi Puspitasari1, Khotijah Lahji1, Sally Cahyati1, Martinus Bambang Susetyarto1, K.A Abdul Khalid2, S. Ahmad3 1 Universitas Trisakti, Indonesia 2 Universiti Malaysia Perlis, Malaysia 3 International Islamic University Malaysia, Malaysia Abstract Thermal comfort depends on the exposed sun^s radiation, the temperature, and the wind speed around the building. In a naturally ventilated room, a method to be applied to achieve thermal comfort in a tropical area is enhancing the wind speed in the room through an opening design. An aspect capable of determining the comfort of a room is an opening design since it will affect the airflow and the natural lighting that the room will obtain. This study aims to analyse various types of windows and their opening angles in the FTSP studio at Universitas Trisakti. The CFD numerical simulation aims to predict the studio^s airflow pattern and temperature by using three different window opening angles: 45&#8304-, 90&#8304-, and 135&#8304-. Then, the results are compared to those closest to the SNI 03-6572-2001 standard. Based on the results of the study, it is found that a vertical pivot window with a 135&#8304- opening angle receives the results closest to the standard at nine points of measurement with the wind speed ranging from 0.14 m/s to 0.97 m/s. Keywords: Window Opening, Thermal Comfort, Wind Speed, Temperature, CFD Share Link | Plain Format | Corresponding Author (Rosyida Permatasari)

224	Engineering	ABS-173
The Influence of Palm Oil Methyl Ester Sulfonate Surfactant Concentration on Reducing Interfacial Tension in 41 oAPI Oil Andika Lesmana1, Rini Setiati2*, Muhammad Taufiq Fathaddin2, Berkah Hani3 Universitas Trisakti Abstract In the petroleum industry, Enhanced Oil Recovery (EOR) technology has been developed to enhance the recovery of residual oil in reservoirs. One of the methods is Surfactant Flooding. Surfactants are used because can reduce the interfacial tension (IFT) between water and oil in rock pores. Phase behavior and interfacial tension (IFT) tests were conducted in the laboratory. The phase behavior test utilized a reaction tube, where crude oil was mixed with the surfactant at the same ratio and placed in an oven at a temperature of 60 oC. IFT measurement was carried out using the spinning drop method. The surfactant solution used was surfactant MES palm oil, with concentrations ranging from 0.5% to 2% and a salinity of 8000 ppm. The optimal emulsion phase results were obtained at a concentration of 1.25% MES palm oil. The middle phase emulsion formed amounted to 8.75%. The measured IFT value under these conditions was 0.24 dyne/cm, whereas in the brine measurement with crude oil of 41 oAPI without surfactant, it was 12.43 dyne/cm. In conclusion, this research demonstrates that palm oil MES surfactant can form a middle-phase emulsion and reduce interfacial tension for the 41 oAPI crude oil system. Keywords: Surfactant, Methyl Ester Sulfonate, Palm Oil, Interfacial Tension, Phase Behavior Share Link | Plain Format | Corresponding Author (Rini Setiati)

225	Engineering	ABS-174
Effect of Palm Oil MES Surfactant Concentration on 45 &#730-API Oil on Phase Behavior Test Results Gibrant Haikal Nazhiif1, Rini Setiati2*, Muhammad Taufiq Fathaddin2, Berkah Hani3 Universitas Trisakti Abstract The demand for crude oil consumption in Indonesia rises annually, yet the country faces a decline in oil production. To address this, Enhanced Oil Recovery (EOR) is employed, with a focus on chemical injection using Methyl Ester Sulfonate (MES) surfactant derived from palm kernel. MES, an anionic surfactant, is produced from methyl esters of palm kernel oil and Crude Palm Oil (CPO). Surfacted chemical injection is preferred for its ability to reduce interfacial tension between oil and water. Prior to injection, screening tests, including a phase behavior test, are crucial to evaluate surfactant effectiveness. In this study, palm kernel MES surfactant concentrations of 0.5%, 0.75%, 1.0%, 1.25%, 1.5%, 1.75%, and 2.0% are utilized, with a salinity of 15,000 ppm and a crude oil sample of 45&#730-API. The phase behavior test involves mixing surfactant and oil samples in test tubes, shaking, and incubating at 60&#730-C, observing emulsion changes over 21 days. Results indicate that a 1.25% surfactant concentration produces the most stable emulsion with a 7.50% total emulsion. This research concludes that palm kernel MES surfactant effectively forms a middle-phase emulsion in the light crude oil system of 45&#730-API. Keywords: EOR, Phase Behavior Test, Middle-phase Emulsion, Palm Kernel MES Surfactant, Light Crude Oil 45 Share Link | Plain Format | Corresponding Author (Rini Setiati)

226	Engineering	ABS-430
UI/UX Design for the Plant Seed Sales and Tracking System Using the Design Thinking Method Nada Fathi Muthia, Agus Setiawan, Pristi Sukmasetya University of Muhammadiyah Magelang Abstract In this era of technological advancement, it is increasingly easy for humans to enhance their activities. Following the outbreak of the Corona Virus Disease 2019 (COVID-19), online shopping has become a common practice. Another notable impact of the COVID-19 pandemic is the growing interest in plant care among many individuals. This newfound hobby has led to an increased demand for plant seeds among sellers. A considerable number of plant enthusiasts now prefer to purchase seeds online. The purpose of this application is to assist individuals in conveniently and reliably shopping for high-quality plant seeds. Since plant seeds have a limited shelf life of no more than 5 days, we have incorporated a tracking feature to help users monitor the location of their orders. Therefore, the application is meticulously designed to offer solutions that simplify the trading process. In our design approach, we employ the design thinking method, which includes the steps of empathizing, defining, ideating, prototyping, and testing. Following the development process, we have successfully created a mobile application model named ^Juragan Kebun,^ featuring purchasing, notification, and location tracking functionalities. For the testing phase, we utilized the maze platform, facilitating the evaluation of the application. The prototype testing involved 5 respondents, and the average success rate was determined to be 83%. Task 1 achieved a 100% success rate, while tasks 2 and 3 achieved 75% success each. During testing, users were able to complete tasks with ease, although some tasks posed challenges. In this design, it is essential to enhance performance to ensure users encounter minimal difficulties when using the application. Keywords: User Interface, User Experience, Usabilty Testing Share Link | Plain Format | Corresponding Author (Nada Fathi Muthia)

227	Engineering	ABS-175
Analysis of Compound Flooding in the Cakung Drain Area, DKI Jakarta Province Rahman Nurabriansyah (a*), Muhammad Syahril Badri Kusuma (b), Arie Setiadi Moerwanto (c) (a) Master Study Program of Water Resources Management, Civil Engineering Study Program, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung 40132, Indonesia (b) Water Resources Engineering Research Group, Civil Engineering Study Program, Faculty of Civil Engineering and Environmental, Bandung Institute of Technology, Bandung 40132, Indonesia. (c) Senior Expert Engineer at the Hydraulic and Geotechnical Institute of Water Resources, Directorate General of Water Resources, Ministry of Public Works and Public Housing Abstract Cakung Drain is an artificial river or canal situated downstream of the Cakung River and Buaran River, administratively located in East Jakarta and North Jakarta. As an area adjacent to the sea, Cakung Drain has a high risk of flooding. Factors contributing to flooding in the Cakung Drain area include heightened rainfall intensity, flat and low topography of the estuarine region, land subsidence, tidal fluctuations. Incidents such as high tide and elevated river discharge can result in compound flooding in the downstream area of Cakung Drain. This study involves flood modeling in the Cakung Drain area using the HEC-RAS application. Modelling is carried out with two scenarios: one with the existing channel geometry and another with channel geometry after implementing flood embankment interventions and channel normalization. To simulate compound flooding, the upstream flood modeling boundary is determined by the planned flood discharge (Q50), while the downstream boundary is set by the highest tide resulting from tidal modeling over 18.6 years. Simulation results indicate that, under current conditions, flooding occurs at various points with a height ranging from 1.5 to 3 meters. However, simulation results with flood mitigation measures show no more flooding in the Cakung Drain area. Keywords: Cakung Drain- Compound Flood- Discharge- Tidal Share Link | Plain Format | Corresponding Author (Rahman Nurabriansyah)

228	Engineering	ABS-176
Development Of An Encryption Algorithm Based On The Caesar Cipher Algorithm Karyo Budi Utomo (a*), Ahmad Rofiq Hakim (b), Bambang Cahyono (c) a) Computer Engineering Technology, Politeknik Negeri Samarinda Jl. DR. Ciptomangunkusumo, Gunung Lipan Campus, Samarinda, East Kalimantan kbu[at]polnes.ac.id b) Computer Engineering Technology, Politeknik Negeri Samarinda Jl. DR. Ciptomangunkusumo, Gunung Lipan Campus, Samarinda, East Kalimantan, rofiq93[at]polnes.ac.id c) Computer Engineering, Politeknik Negeri Samarinda Jl. DR. Ciptomangunkusumo, Gunung Lipan Campus, Samarinda, East Kalimantan, bambangcahyono[at]polnes.ac.id Abstract The problem in securing data is still an important aspect in maintaining data storage, especially data stored in digital form. This causes due to very rapid progress in the field of computers with the concept of an open system that has been widely used, so this can make it easier for someone to do data destruction that requires data stored in digital. This security usually uses encryption. Encryption is the process of communicating information by making that information unreadable without the help of special knowledge. So that encrypted data can be read, the decryption process is needed. The decryption process is used so that the message can be read again by the intended party. One of the algorithms to carry out the encryption and decryption process is the Caesar cipher algorithm, which algorithm is one of the most widely studied. However, the Caesar cipher algorithm has a disadvantage including all letters can be covered, do not recognize lowercase or uppercase letters. It is necessary for the development of the Caesar cipher. The purpose of this research is to develop an encryption algorithm based on the caesar cipher algorithm. A result of this research is a development of a Caesar cipher algorithm that includes more characters, namely A-Z, a-z, 0-9, and comma and space characters. In this study also used a change of 3 characters vertically (below). Keywords: caesar cipher, decryption, encryption Share Link | Plain Format | Corresponding Author (Karyo Budi Utomo)

229	Engineering	ABS-433
Decision Support System for Railway Spare Parts Inventory Control Hamdan Kamil Syah (a*) , Pudji Astuti (b*), Winnie Septiani (c*) a, b, c) Department of Industrial Engineering, Trisakti University Abstract Decision making in inventory management plays a very important role on controlling operational cost and production effectiveness inside an industry. Electric rail trains (KRL) as a public transportation in Jabodetabek, requires good maintenance management to maintain operational reliability. In the current management of the KRL maintenance system, fast and accurate decisions on controlling the KRL spare parts inventory are needed so that the maintenance process runs smoothly and minimal operational costs are obtained. This research aims to design a decision support system (DSS) for KRL spare parts inventory control decisions. This research begins with a PIECES (Performance, Information, Economy, Efficiency, Control, Service) analysis to understand system requirements. The designed DSS consists of 4 sub-models, which are 1) spare parts demand forecasting model with Monte Carlo simulation, 2) s & Q parameter calculation model for continuous review system, 3) inventory control scenario evaluation model based on total cost and service level criteria, and 4) decision assessment model with simple additive weighting method. The data required by DSS are spare parts data, spare parts demands, inventory control cost and supplier data. Results of DSS examination on KUR 12313 and KUR 12314 spare parts shows that the system is able to provide decisions in determining needs and ordering spare parts quickly and precisely. In conclusion, the designed DSS can be implemented in the spare parts inventory control system for all types of spare parts in the KRL maintenance process. Keywords: Decision support system- Inventory control- PIECES analysis- Monte Carlo simulation- Continuous review- Simple additive weighting Share Link | Plain Format | Corresponding Author (Hamdan Kamil Syah)

230	Engineering	ABS-179
Identification of induce draft fan damage using fault tree analysis Wilarso1,2*, Che Wan Mohd Noor1, Ahmad Faisal Mohamad Ayob1, Wan Nurdiyana Wan Mansor1, Hilman Sholih2, Muhamad Kaharudin3, Mujiarto4 1 Faculty of Ocean Engineering Technology and Informatics, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia 2Sekolah Tinggi Teknologi Muhammadiyah Cileungsi, Cileungsi, Bogor, West Java, Indonesia Abstract Steam Power Plants (PLTU) are a type of generator that is widely used by the State Electricity Company (PLN) to meet national electricity needs, the hope of which is to reduce dependence on Diesel Power Plants (PLTD). PT generating unit. The coal-fired Alamraya Semesta Energy with an installed capacity of 1x15 MW and a production target of 10 MW for utilities and 5 MW for wood processing has an Availability Hour of 82.9% and Unavailability of 17.1% during the period January to December 2013. Unavailability of 17.1% occurred either due to disturbances , inspection and repair of generating unit systems. Based on field findings, the outage occurred due to damage to the brush generator which had been discontinued, requiring fabrication and causing downtime of 32 days and repetitive failure in the IDF (Induced Draft Fan) which was used by the generator maintenance team to remove bottom ash. To determine action to improve the performance of the generating unit, an analysis is carried out of the main causes of IDF damage, as well as the financial losses that arise. Fault tree analysis shows that abrasion and perforation on fan blades and cones, as well as damage to motor bearings automatically reduce IDF efficiency Keywords: Induce Draft Fan, Failure Analysis, PLTU Share Link | Plain Format | Corresponding Author (Wilarso Wilarso)

231	Engineering	ABS-436
Simulation Model for Improving Warehouse Layout using ProModel and Class-Based Storage Method Winnie Septiani(a*), Ramanda Rakhmayonita(b), Ratna Mira Yojana(c) a,b,c) Department of Industrial Engineering, Faculty of Industrial Technology, Universitas Trisakti, Indonesia *winnie.septiani[at]trisakti.ac.id Abstract The finished goods warehouse is one of the main factors to maximize production results as the final storage location before being shipped safely and on time. In this activity, there is still the use of the randomized storage method which causes a long warehousing time. In addition, there is a problem of obstructing the process of moving finished goods due to the discovery of backtracking and the lack of supporting warehousing facilities to reach the movement activities contained in the warehouse. This research aims to design an improved layout of the finished goods warehouse to increase the efficiency and effectiveness of the warehousing process time. This research uses promodel simulation and class-based storage method. The output variables measured are the total movement time from the production floor area to the shipping area and loading and uploading activities. The number of finished product variations to be simulated amounted to 40 variants. Building improvement scenarios are obtained from the results of warehouse layout improvements using the class-based storage method. Simulation in actual conditions obtained warehousing process time of 204.284 minutes. The proposed improvement scenarios are (1) Improvement of space requirements and storage area based on the percentage of movement frequency with a simulation time of 100.49 minutes- (2) The use of scenario 1 and equipped with additional supporting facilities in the form of material handling with a simulation time of 59.93 minutes. The second scenario was selected because it has a decrease in the percentage of warehousing time by 70.66%. Keywords: Simulation- Promodel- Warehouse- Class based storage- Finished Goods Share Link | Plain Format | Corresponding Author (Yunita Friscillia Suryana)

232	Engineering	ABS-437
Ergonomic Workspace Design to Reduce the Risk of Musculoskeletal Disorders Winnie Septiani(a*), Vivian Angelika(b), Novia Rahmawati(c) a,b,c) Industrial Engineering, Faculty of Industrial Technology, Universitas Trisakti, Indonesia *winnie.septiani[at]trisakti.ac.id Abstract Office activities were closely tied to document handling and computer interaction. Based on initial identification with the Nordic Body Map, MSDs (Musculoskeletal Disorders) complaints were identified in the shoulders, wrists, waist, buttocks and back. This study aimed to offer recommendations for enhancing office workstations to minimize the risk of MSDs. The methods used are ROSA to identify employee work postures, product design to provide proposed work facilities, 5S for document organization, and Radar Chart for evaluation. Initial identification shows the problems that exist in work facilities, workspace layout, work environment factors. The initial identification of the workspace with Radar Chart also showed a poor score on 5 aspects of Seiri, Seiton, Seiso, Seiketsu, and Shitsuke with an average of 41.75. The proposed intervention is the improvement of ergonomic tables and chairs, structuring documents by applying 5S aspects, and improving the layout of the workspace. The proposed improvements were then evaluated again using the Office 5S Audit Checklist and Radar Chart so that after the ergonomics intervention, the Radar Chart value became 90.75 (excellent) and the 5S aspects (Seiri, Seiton, Seiso, Seiketsu, and Shitsuke) increased. The results of this improvement can be expected to overcome the risk of MSDS problems in the lower neck, buttocks, back, waist and the resulting ergonomic, organized, and efficient workstations. Keywords: Office Ergonomics, 5S, ROSA, NBM, Office 5S Audit Checklist Share Link | Plain Format | Corresponding Author (Citra Puspita Rani)

233	Engineering	ABS-182
Effectiveness of Groundsill Structure in Reducing Local Scouring at Cipamingkis Dam Rizka Masyhura, Yadi Suryadi Institut Teknologi Bandung Abstract Cipamingkis River is a tributary of Cibeet River located in Jonggol District, Bogor Regency, West Java Province. On the Cipamingkis River, there is a vital irrigation infrastructure known as the Cipamingkis Dam, which can irrigate approximately 7,508 hectares of rice fields in Bogor Regency and Bekasi Regency. Cipamingkis dam located in Jatinunggal Village, is on the northern slope of the West Java hills which has a relatively steep riverbed slope so that the possibility of degradation of the riverbed is relatively high. slope of the riverbed is relatively steep so that the possibility of riverbed degradation is quite high. riverbed degradation is quite high. In 2020 there were two groundsills that had been built upstream of the Cipamingkis weir. The groundsill built across the river aims to reduce the current velocity and increase the sediment deposition rate upstream of the groundsill so that the slope of the riverbed is relatively gentle and the Cipamingkis Dam does not experience structural failure as has happened before. The effectiveness is determined by comparing the riverbed elevation around the dam structure, before and after years construction of the groundsill structure. Keywords: Groundsill, Cipamingkis, Scouring Share Link | Plain Format | Corresponding Author (Rizka Masyhura)

234	Engineering	ABS-183
The River Morphological Stability of Juana River based on Sediment Transport. Zefania Iqnes Freddy Hutagaol (a*), Eka Oktariyanto Nugroho (b), Agung Wiyono Hadi Soeharno (b) , Slamet Lestari (c), Archyuda Farchan (a) (a)Master Program in Water Resources Management, Civil Engineering Study Program, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung 40132, Indonesia (b)Water Resources Engineering Research Group, Civil Engineering Study Program, Faculty of Civil Engineering and Environmental, Bandung Institute of Technology, Bandung 40132, Indonesia. (c)Ministry of Public Works and Housing Abstract Juana River is a river located in the north of Central Java. The downstream part of the Juana River flows into the North Java Sea. Problems with the Juana River include drought during the dry season and flooding during the rainy season. In addition, saline water intrusion makes it difficult for communities to access raw water. Flooding in the Juana River is caused by land use changes in the upper reaches of the river, the presence of a large number of fishing boats anchored downstream, flooding in the lower reaches, and the relatively gentle slope of the Juana River. Currently, the Ministry of Public Works and Housing (Kementerian PUPR) is undertaking the construction of normalization, dam raising, and rubber dams in the Juana River. This study aims to analyze river stability which is closely related to river management planning. Analysis was carried out using HEC RAS to determine changes and morphological stability of rivers. The results of the depth morphology stability calculation in the Juana River post-construction show that the riverbed is unstable. Keywords: Juana River, Sediment, River Management Planning, River Morphology, HEC RAS Share Link | Plain Format | Corresponding Author (Zefania Iqnes Freddy Hutagaol)

235	Engineering	ABS-184
The Effect of Wave Transformation on Jetty structures in Bojongsalawe Estuary, Pangandaran Regency M. Rizqi Noverian Agatha(a*), Indratmo(b), Yadi Suryadi(b), Eka Oktariyanto Nugroho(b), Widyaningtias(b), Ritular(c) (a)Master Study Program of Water Resources Management, Civil Engineering Study Program, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung 40132, Indonesia (b)Water Resources Engineering Research Group, Civil Engineering Study Program, Faculty of Civil Engineering and Environmental, Bandung Institute of Technology, Bandung 40132, Indonesia. (c)Ministry of Public Works and Housing Abstract Bojongsalawe estuary is a place for the flow of shipping traffic for fishermen. The estuary is located on the South Coast of Java which has a very large wave influence. That situation has difficulty for fishermen doing activity. For this reason, the Ministry of Public Works and Public Housing is building a two jetty on 2 sides of the estuary. The study aims to analyse the influence of jetty on wave height. The analysis was carried out using MIKE Coast and Sea to determine the wave height that occurred due to the jetty. The analysis was carried out using 2 scenarios, namely the scenario without jetty and with jetty. The modelling results obtained that the wave height due to the jetty is lower than without the jetty. The results of the model were then validated using tidal data at the study site. This study is intended to determine the wave height that occurs due to the jetty so that it can be used as a reference for the flow of shipping traffic for fishermen in Bojongsalawe^s estuary. Keywords: jetty, wave height, MIKE, Bojongsalawe, estuary Share Link | Plain Format | Corresponding Author (M Rizqi Noverian Agatha)

236	Engineering	ABS-188
Study on the Impact of Land Use Changes Caused by IKN Development on Sanggai River Flood Discharge Fredy Riandy Sujana(a*), Ana Nurganah Chaidar (b), Waluyo Hatmoko (c) a) Magister Study Program of Water Resource Management, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Jl. Ganesha 10, Bandung, West Java Province, 40132, Indonesia b) Water Resources Engineering Research Group, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Jl. Ganesha 10, Bandung, West Java Province, 40132, Indonesia c) Senior Researcher at the Hydrology and Water Resources, Ministry of Public Works and Housing, Jl. Pattimura 20, South Jakarta, DKI Jakarta Province, 12110, Indonesia Abstract In 2019, President Joko Widodo implemented a political policy to relocate the capital of the Republic of Indonesia from DKI Jakarta to Penajam Paser Utara Regency and Kutai Kartanegara Regency. Construction has commenced and will be executed in several stages until 2045. The primary development stage will concentrate on the Central Government Core Area (KIPP). The relocation of the National Capital poses several potential problems, one being the risk of inundation and flooding. The government aims to minimize this risk by creating green areas covering up to 70% of the total area of IKN. Additionally, the government is constructing flood control infrastructure, including retention ponds, check dams, bottom controllers, and other structures. One of the rivers that flows through KIPP is the Sanggai River, covering a catchment area of 19.3 km2 with a river length of 9.8 km. This research will discuss the impact of IKN development on the Sanggai River Catchment Area, focusing on proposed changes in land use and alterations in flood discharge within this river. Furthermore, the study will investigate the influence of constructing flood control buildings (retention ponds and bottom controllers) using modeling on HEC-RAS. The objective of this research is to assess the effectiveness of flood control structures and estimate the potential for flood inundation. Keywords: flood- retention pond- bottom controller- sanggai- land use- IKN. Share Link | Plain Format | Corresponding Author (Fredy Riandy Sujana)

237	Engineering	ABS-190
The Effect of Sabo Works Design and River Improvement on The Magila River with Consideration on Morphological Changes Influenced by Debris Flow Events Fino Kurnia Halim (a*), Joko Nugroho (b), Slamet Lestari (c) a) Magister Study Program of Water Resource Management, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Jl. Ganesha 10, Bandung, West Java Province, 40132, Indonesia *finokurniahalim[at]pu.go.id b) Water Resources Engineering Research Group, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Jl. Ganesha 10, Bandung, West Java Province, 40132, Indonesia c) Head of Dams and Lakes Technical Planning Subdirectorate, Directorate of Dams and Lakes, Ministry of Public Works and Housing, Jl. Pattimura 20, South Jakarta, DKI Jakarta Province, 12110, Indonesia Abstract The morphological changes of a river due to debris flow are essential considerations in understanding the dynamics of a river. The Magila River, located in the Sigi Regency, Central Sulawesi Province, is a small river with an area of approximately 125 hectares, but the average riverbed slope exceeds 10%. This river faced water damage issues, such as debris floods on December 12, 2019, and overflowing floods on October 11, 2022. Based on the ongoing mitigation (Sabo Works and River Improvement), an analysis of flow modeling through HEC-RAS software with Non-Newtonian parameters is also being conducted. Simulations are performed on both the existing river scenario and the design river scenario. The flood and sediment transport simulations indicate that the capacity of the existing river is insufficient to accommodate the planned 100-year return period flood discharge, leading to overflow in several river sections with a maximum inundation height of 36 centimeters. The river also tends to experience riverbed degradation, triggering landslide events. In contrast, in the design river, overflow in river sections is reduced, although some areas still experience inundation with a maximum height of 9 centimeters. The river morphology in this scenario is more stable, with a balanced level of degradation and aggradation. The conclusion of this research indicates that a series of ongoing mitigation efforts needs to be expanded to minimize the risk of floods but is already optimal in maintaining river morphology stability. The research findings are expected to be beneficial in maximizing the management of the Magila River. Keywords: Magila river, Debris flow, Non-newtonian, Sabo, HEC-RAS Share Link | Plain Format | Corresponding Author (Fino Kurnia Halim)

238	Engineering	ABS-194
Comparison of River Stability using 2D HEC-RAS Newtonian and Non-Newtonian Flow Modeling (Case Study: Design of Sabo Dam in the Namo River Basin, Sigi Regency, Indonesia) Taufik Ismail (a*), Dhemi Harlan (b), Arie Setiadi Moerwanto (c) a) Magister Study Program of Water Resource Management, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology *t.ismail078[at]gmail.com b) Water Resources Engineering Research Group, Faculty of Civil and Environmental Engineering, Bandung Institute of Technology c) Ministry of Public Works and Housing, Republic of Indonesia Abstract River stability is a crucial factor in assessing and managing risks associated with natural disasters, such as debris flows. This study compares river stability using two-dimensional (2D) HEC-RAS modeling with both Newtonian and Non-Newtonian flow approaches. Typically, non-Newtonian flow models are used for modeling debris flows. However, this study examines how the differences in modeling using Newtonian and non-Newtonian flows affect the potential for debris and the stability of the river system. The study focuses on the Namo River located in Sigi Regency, Indonesia, which is prone to debris flow events. In order to mitigate debris flows in the Namo River, three Sabo Dams and one Consolidation Dam have been built. The conditions before and after the construction of the Sabo Dam and the Consolidation Dam will also be modeled in this study. By comparing the results obtained from these modeling techniques, the study aims to provide a comprehensive understanding of river stability and improve the accuracy of debris flow prediction. The findings from this study have significant implications for the management and planning of the Namo River and similar river systems, enabling effective measures to minimize the potential risks associated with debris flow events. Keywords: Namo river- debris flow- newtonian flow- non-newtonian flow- HEC-RAS Share Link | Plain Format | Corresponding Author (Taufik Ismail)

239	Engineering	ABS-195
Realizing Sustainable Digital Transformation for Smart City Evolution: A Systematic Literature Review Hariyadi1, a*), Waradzi Mustakim2, b), Muhammad Giatman3, c), Hansi Effendi4, d), Aswardi5, e), Dwi Pratiwi Wulandari6, f), Mahyessie Kamil7, g), Yulisman8, h), Aggrivina Dwiharzandis9, i), Budi Santosa10, j), Dytchia Septi Kesuma11,k) 1,7,8,9,10,11Department of Electrical Engineering, Muhammadiyah University of West Sumatera, Indonesia 2,3,4,5Faculty of Engineering, Padang State University, Indonesia 6Faculty of Tourism and Hospitality, Padang State University, Indonesia a) Corresponding author: hariefamily[at]yahoo.co.id b)waradzimustakim[at]student.unp.ac.id, c)giatman[at]ft.unp.ac.id, d)hans_79[at]ft.unp.ac.id, e)aswardi[at]ft.unp.ac.id, f)dwiktiwi[at]gmail.com, g)mahyessie.kamil[at]gmail.com, h)fte.umsb12[at]gmail.com, i)aggrivina[at]gmail.com, j)elektroumsb[at]gmail.com, k)dytchia[at]gmail.com Abstract This research focuses on the vital role of sustainable digital transformation in shaping smart cities, where information technology drives urban evolution into intelligent and efficient hubs. Stressing the importance of ongoing digital progress, the study examines the diverse dimensions of sustainable digital transformation, encompassing environmental, social, and economic aspects. Integration of technologies like IoT, big data analytics, and AI forms the basis for a sustainable smart city, promoting resource efficiency, reducing carbon emissions, and improving public services. The study acknowledges challenges, including complex system integration, financial constraints, and security issues, requiring attention for successful transformation. Utilizing the PRISMA method, the research conducts a systematic literature review to uncover benefits, roles, and challenges, contributing insights for discussions on the path of sustainable digital transformation. Guided by the PICO framework, research questions explore the benefits, roles, and challenges, providing a comprehensive understanding of sustainable digital transformation. The results highlight transformative potential, emphasizing the need to address challenges for the evolution of intelligent and sustainable smart cities. This research aims to make significant contributions to the implementation of sustainable digital practices, fostering adaptive, inclusive, and environmentally friendly smart cities. Keywords: Sustainable Digital Transformation, Smart Cities Evolution, Urban Sustainability, Information Technology Integration Share Link | Plain Format | Corresponding Author (Waradzi Mustakim)

240	Engineering	ABS-198
A Review of Geophysics Study of Graphite Occurances in Balai Sebut Complex, Sanggau, West Borneo Rizki Fajar Maulana (a), Deska Sulyana (a), Himmes F.Y. (a), Fajar Hendrasto (a), Budi Wijaya (a), Mira Meirawaty(a*) a) Geological Engineering Department, Universitas Trisakti, Jakarta City, Indonesia *email: mira[at]trisakti.ac.id Abstract Graphite is a non-metallic polymorph mineral formed by carbon. Graphite has become indispensable in worldwide industry due to its widespread applications, such as industrial uses, energy transition, and even electricity. It is a critical anode element for Lithium-ion batteries. Graphite has a unique physical characteristics. It has a very low specific gravity and extremely soft but highly conductive material and is exceptionally heat-resistant, making it applicable in metallurgy and manufacturing. Due to all characteristics, graphite occurrences in Indonesia are slightly unknown. In contrast, there is a possibility, according to some Palaeozoic metamorphic host graphite in several parts of Indonesia. This study will enlighten early step exploration of graphite potency in Balai Sebut, Sanggau Regency, West Borneo. We combined airborne and ground geophysics by using Active Directory Migration Tools (ADMT) to estimate graphite distribution in the surface and subsurface. We also did laboratory analysis to validate graphite content using petrography analysis, X-ray diffraction (XRD), and Carbon analyzer (LECO) of some representative rock-bearing graphite from fieldwork. Graphite in the research area is exposed to the surface, like in Empiyang, whereas potential graphite in the Terati area lies 70 m below the subsurface. Petrography analysis shows that graphite occurs as flake graphite that is characterized by widespread distribution with low thickness. Both LECO and XRD confirmed the occurrence of these graphite-bearing rocks, with the total amount of graphite ranging from 0,91-1,58%. This research is expected to provide suggestions in the early stage of graphite exploration based on thematic cases as graphite occurrences in the Balai Sebut Area. Keywords: Active Directory Magnetoteluric (ADMT)- Geophysics- Graphite- West Borneo Share Link | Plain Format | Corresponding Author (Mira Meirawaty)

Page 8 (data 211 to 240 of 381) | Displayed ini 30 data/page
<< PREV 1 2 3 4 5 6 7 8 9 10 11 12 13 NEXT >>

Powered By Konfrenzi Ultimate 1.832M-Build6 © 2007-2024 All Rights Reserved