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2023 International Conference on Computer Science, Information Technology and engineering, ICCoSITE 2023

作者： Afrisal, Hadha Sofwan, Aghus Widayat, Widayat Isnanto, R. Rizal Diponegoro University Electrical Engineering Department Study Program of Professional Engineers Semarang Indonesia Diponegoro University Faculty of Engineering Electrical Engineering Department Semarang Indonesia Diponegoro University Study Program of Professional Engineers Faculty of Engineering Semarang Indonesia

ISBN: (纸本)9798350320954

One of the potential implementations of mobile robots in mitigating the risk of communicable diseases is for delivering items and handling materials with no-human contact. In that scenario, mobile robots require the capability of performing simultaneous multi-object detection and distance estimation for dynamic exploration in a real-world environment. Some existing research papers have contributed to the development of object detection or distance estimation, separately. However, there is still a lack of studies on simultaneous multi-object detection and distance estimation for robot navigation, especially in terms of performance analysis of the integrated techniques. One of the most challenging issues of integrating multi-object detection and distance estimation is the validation and evaluation of the type of objects with their relevant estimated distance to the robot. For that reason, this research aims to analyze the mobile robot's sensing performance in integrated simultaneous multi-object detection and distance estimation during navigation scenarios. A depth camera of Intel RealSense D455 and a rotating LIDAR of Slamtec RPLidar A1M8 are utilized in the experiments. The result of experiments shows that the object detection algorithm using Mobilenet SSD V2 can perform an accuracy of 74%, with precision, recall, and F1-Score consecutively achieving 74,54%, 74,00%, and 74,22%. The multi-object distance estimator also performs satisfactory results with a low measurement average error of 10.3 cm for indoor experiments. The integrated multiobject detector and distance estimator system can work in a real-time mode of 30 FPS, thence significantly improving the navigation performance of the mobile robot. © 2023 IEEE.

关键词： Object detection

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Stackelberg Equilibrium Between the Insured and the Insurer in n-Year Life Insurance for Maximizing Profit 4th

Stackelberg Equilibrium Between the Insured and the Insurer ...

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4th International Conference on Mathematics, Statistics, and Computing Technology, ICMSCT 2023

作者： Pasaribu, Udjianna Sekteria Sa’idah, Nur Faizatus Study Program of Mathematics Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Bandung Indonesia Study Program of Industrial Engineering Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia

ISBN: (纸本)9789819734498

In the life insurance industry, determining the amount of premium paid by the insured to the insurer is crucial. This paper uses Stackelberg’s game theory to describe the reality that occurs between two parties involved in this business, i.e. the insured and the insurer. The insurer as a leader offers four different insurance products, and the insured as a follower has two strategies: (1) accepting or (2) rejecting one of the offered insurance products. The amount of premium is obtained by optimizing the insurer’s profit for each insurance product and the insured’s choice of strategy with a certain premium value limit. For the model formulation, the Indonesia Mortality Table IV is used as a guide to obtaining the parameters of the Makeham and Gompertz distribution (survival) functions. The developed model can determine (1) the amount of premium for each insurance product offered, (2) the expectation of insureds who will purchase each insurance product, and (3) the maximum profit for each of the two parties. A genetic algorithm is used to obtain the best solution. The result shows that the third insurance product, which uses Makeham distribution and offers two types of benefits, is preferred by the two parties involved. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Game theory

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Sorption-enhanced steam gasification of fine coal waste for fuel producing

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Journal of King Saud University - engineering Sciences 2024年第2期36卷 81-88页

作者： Aprianti, Nabila Faizal, Muhammad Said, Muhammad Nasir, Subriyer Doctoral Program of Environmental Science Graduate School Universitas Sriwijaya South Sumatra Palembang30139 Indonesia Chemical Engineering Department Faculty of Engineering Universitas Sriwijaya South Sumatra Ogan Ilir30662 Indonesia

Improving the quality of syngas from fine coal waste using the sorption-enhanced gasification process is a novel technology in the production of H2. The effect of CaO on CO2 absorption and H2 increase in the steam fine coal gasification process was determined in a fixed bed gasifier. The steam gasification process took place at 650 °C using bentonite and CaO as catalysts and absorbents. Steam increased the H2 concentration in the syngas to 58 vol%. In-situ CO2 absorption is more effective with the addition of CaO. The maximum percentage of CO2 was absorbed when the Ca/C ratio 2 was 78.33 %. The H2 content in the syngas after the CO2 was absorbed increased rapidly to 75.80 vol% at a Ca-to-carbon-mole ratio (Ca/C) of 1.5 and a steam-to-feedstock ratio (S/F) of 1.5. CaO did not produce significant results for low heating value (LHV) or cold gas efficiency (CGE), with results of 12 MJ/Nm3 and 44.53 %. The dominant water gas shift reaction due to the influence of steam and CaO increased H2/CO up to 9.11, which made the syngas from this work suitable for Fischer–Tropsch synthesis. © 2022 The Authors

关键词： Carbon dioxide

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Enhanced electrocatalytic activities in TiO_(2)-sulfur nanoparticles decorated graphene nanocomposite electrode for detecting formaldehyde compound

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Chinese Journal of Chemical engineering 2025年第4期80卷 213-219页

作者： Maulidiyah Maulidiyah Muhammad Nurdin WD Syafitri Salsabila Suryani Dyah Astuti Thamrin Azis La Ode Muhammad Zuhdi Mulkiyan La Ode Agus Salim Akrajas Ali Umar Department of Chemistry Faculty of Mathematics and Natural SciencesUniversitas Halu OleoKendari 93232Southeast SulawesiIndonesia Department of Environmental Engineering Universitas Muhammadiyah Kendari 93121 Southeast SulawesiIndonesia Department of Chemistry Faculty of EngineeringUniversitas Sulawesi TenggaraKendari 93121Southeast SulawesiIndonesia Biomedical Engineering Study Program Department of PhysicFaculty of Science and TechnologyUniversitas AirlanggaSurabaya 61115Indonesia Department of Chemistry Faculty of Science and TechnologyInstitut Sains Teknologi dan Kesehatan(ISTEK)Aisyiyah KendariKendari 93116Southeast SulawesiIndonesia Institute of Microengineering and Nanoelectronics University Malaysian nationalityUKMBangi 43600SelangorMalaysia

The unique properties of TiO_(2)-sulfur(TiO_(2)-S)modified graphene nanocomposite electrode(GPE/TiO_(2)-S)in the electrochemical sensing of formaldehyde compound has been *** prepared TiO_(2)-S by hydrothermal method and modified the graphene nanocomposite electrode by applying electrochemical cyclic voltammetry(CV)*** TiO_(2)-S nanocomposite was characterized by X-ray diffraction(XRD),while the GPE/TiO_(2)-S was examined by scanning electron microscopy(FESEM)and X-Ray fluorosense(XRF)***_(2)-S has a grain size of 19.32 *** surface morphology of the GPE/TiO_(2)-S nanocomposite shows a good,intact,and tightly porous structure with TiO_(2)-S covers the graphene *** content of optimized GPE/TiO_(2)-S electrodes is 41.5%of graphene,37.8%of TiO_(2),and 12.4%of sulfur that was prepared by mixing 1 g of TiO_(2)-S with 0.5 g of graphene and 0.3 mL *** GPE/TiO_(2)-S electrode produces a high anodic current(I_(pa))of 800μA and a high cathodic current(I_(pc))of-600μA at a scan rate of 0.1 V·s^(-1)using an electrolyte0.01 mol·L^(-1)K_3[Fe(CN)_6]solution containing 150 mg·L^(-1)*** limit of detection can reach as low as 9.7 mg·L^(-1)with stability with Horwitz ratio value as low as *** composite electrode also exhibits excellent slectivity properties by showing clear formaldehyde sugnal in the presence of high concentration of interfering ***/TiO_(2)-S electrode should find potential application of formaldehyde detection in food industries.

关键词： Food safety Formaldehyde Voltammetry Graphene TiO_(2)-S

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Secure E-Voting System for Student Associations in Private University Using Paillier Algorithm 21

Secure E-Voting System for Student Associations in Private U...

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21st IEEE Student Conference on Research and Development, SCOReD 2023

作者： Tenusa, Ivan Surbakti, Eunike Endariahna Tobing, Fenina Adline Twince Kusnadi, Adhi Universitas Multimedia Nusantara Informatics Study Program Informatics and Engineering Faculty Indonesia

ISBN: (纸本)9798350318821

The representatives of student associations at Private University are entrusted with the responsibility of empowering, facilitating, and nurturing the growth of the students, lecturers, and alumni within their respective programs. If the elected representatives do not align with the general consensus, problems are bound to arise. Therefore, student participation during the annual voting period is of utmost importance. When voting participation is low, the risk of the majority voice not being heard increases. Data from the General Election Commission in the private university reveals that among the four student associations in the Tech and IT faculty, three of them have a participation rate lower than 50%.This research aims to develop an E-Voting system for Student Associations within the university, with the intention of replacing the currently utilized Google Form system and enhancing student participation in future voting periods. While constructing an electronic voting system, the security and confidentiality of participants are vital. The Paillier homomorphic encryption algorithm is employed in the system to encrypt and decrypt voting messages sent by voters, ensuring their confidentiality. This algorithm was chosen due to its relative recency, speed, and relevance to this research in comparison to other algorithms. A user acceptance test conducted using the Technology Acceptance Model (TAM) has demonstrated that the application has been successfully developed, with user assessments of 87.50% for perceived ease of use, 72.27% for perceived usefulness, 74.74% for behavioral intention, and 86.46% for actual usage. © 2023 IEEE.

关键词： Students

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Artificial Intelligence-Based System 'SiMoniK' for MSMEs 9

Artificial Intelligence-Based System 'SiMoniK' for MSMEs

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9th IEEE Information Technology International Seminar, ITIS 2023

作者： Lestari, Sri Yulmaini Aswin Sulyono Nul Fikri, Ruki Rizal Informatics Engineering Study Program Faculty of Computer Science Bandar Lampung Indonesia Management Study Program Faculty of Economics Business Bandar Lampung Indonesia

ISBN: (纸本)9798350306835

Artificial intelligence was recently implemented in various fields. One of these applied artificial intelligence systems was the Performance Monitoring System "SiMoniK"for MSMEs. This system was designed through the C4.5 algorithm and the Porat-Rank method. The C4.5 algorithm was applied to classify the MSMEs into three classifications, e.g. the micro enterprise classification, the small enterprise classification, and the medium enterprise classification. Moreover, the Porat-Rank method was also applied to distribute the solving-problem recommendations and to improve the independence of MSMEs. The result of this study was that the C4.5 algorithm could classify the MSME data correctly in the form of an accuracy value of 99.2%. Besides, the Porat-Rank method could also provide recommendations in the form of outstanding quality with an NDCG mean value of 0.87. © 2023 IEEE.

关键词： Artificial intelligence

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Assess the Level of Temperature Uniformity in Intermediate Level Incubators Type Incandescent Lamp and Heater Plate 3rd

Assess the Level of Temperature Uniformity in Intermediate L...

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3rd International Conference on Experimental and Computational Mechanics in engineering, ICECME 2021

作者： Riswandha, Ditya Syuhada, Ahmad Hamdani of Mechanical Engineering Study Program Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Syiah Kuala Banda Aceh Indonesia

ISBN: (纸本)9789811936289

One of the business activities favored by the villagers is poultry farming. This happened because the harvest period is fast and the market is easy, especially for public consumption in the province of Nanggroe Aceh Darussalam. Due to the large number of people who are trying to raise ducks, chickens, and laying eggs, problems have arisen with the provision of these poultry seeds. So far, poultry seeds in the Aceh Province have been obtained from a small portion of the populationAcehnese themselves and the rest were imported from North Sumatra. This causes the fluctuating supply of seed poultry which will eventually disrupt the community's poultry farming business in Aceh Province. Seeing these problems, this research wants to produce a multilevel incubator heating system that maintains a uniform temperature for better incubator efficiency. The test is carried out by paying attention to the temperature distribution in the egg incubator. Thus, measuring the distribution temperature with a value range of 37 °C–38 °C at certain points through the test channel is the main thing that must be done. The variation in this research is the number of incandescent lamps/heating plates (4 and 6) which differs whether or not the zinc plate is under the incandescent lamp/heating plate with a power of 100 and 112 Watts for each heater. The heater in the incubator room will turn on at 37 °C and will turn off automatically at 38 °C due to the influence of the thermostat equipment. After testing, the temperature was 0.7 °C for 4 (four) heating plates without using a zinc plate under the heating plate and 0.8 °C for 4 (four) incandescent lamps without using a zinc plate under the incandescent lamp. However, there is a small comparison, namely 0.4 °C for 6 (six) heating plates using a zinc plate under the heating plate and 0.5 °C for 6 (six) light bulbs using a zinc plate under an incandescent lamp. Also 96% test results with various methods. It is a good heat transfer and efficient pro

关键词： Incandescent lamps

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Fuzzy C-means Cluster Pattern Analysis and Ward Model Mapping in Viewing the Growth of Infectious and Non-Infectious Diseases Children in North Aceh

Fuzzy C-means Cluster Pattern Analysis and Ward Model Mappin...

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2023 International Workshop on Artificial Intelligence and Image Processing, IWAIIP 2023

作者： Mauliza, Mauliza Ula, Mutammimul Sahputra, Ilham Afdelina, Rosya Universitas Malikussaleh Medical Education Study Program Faculty of Medicine Lhokseumawe Indonesia Universitas Malikussaleh Information Systems Study Program Faculty of Engineering Lhokseumawe Indonesia

ISBN: (纸本)9798350382914

The problems and challenges for the government in seeing disease growth trend patterns are very important. This research focuses on infectious diseases, namely Dengue Hemorrhagic Fever (DHF), while non-communicable illnesses focus on epilepsy and thalassemia in 2023-2024. The priority in this research is that the Health Service can take action to prevent disease distribution patterns that are seen based on the results of identifying patterns and trends using the fuzzy c-means model and mapping for each region. The research methodology includes collecting patient data, inputted by recorded medical data consisting of sub-district data and the number of incidents. The research results of the Fuzzy C-means model in analyzing infectious disease trend patterns show 3 clusters. The first cluster of vulnerable areas has four sub-districts: Sawang, Syamtalira Bayu, Dewantara and Muara Batu. Then, the second cluster still consists of 18 sub-districts. Finally, the safe cluster consists of 8 sub-districts. Meanwhile, the results of the ward model research showed that there were 2 clusters, namely vulnerable consisting of 19 sub-districts and safe eight sub-districts, which were then included in the spatial map. Meanwhile, analysis of non-communicable disease patterns using fuzzy c-means, namely thalassemia and epilepsy in cluster C1 (High) in 4 and 7 sub-districts, medium cluster in 9 and 7, and low cluster in 14 and 16 sub-districts. Therefore, this research can provide an important picture for the Health Service in analyzing trends in cluster patterns of growth of infectious and non-communicable diseases in children. © 2023 IEEE.

关键词： Diseases

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Influence of Fly Ash, Volcanic Ash and Rice Husk Ash as Filler Asphalt Concrete Wearing Course Based on Marshall Characteristics 1

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1st International Conference on Emerging Smart Cities, ICESC 2022

作者： Magfirona, Alfia Billad, Riza Syaiful Wibowo, Gurawan Djati Amar, Tsulis Iq’bal Khairul Centre for Transport Studies Universitas Muhammadiyah Surakarta Surakarta Indonesia Civil Engineering Study Program Engineering Faculty Universitas Muhammadiyah Surakarta Surakarta Indonesia

ISBN: (数字)9789819911110

ISBN: (纸本)9789819911103

Filler serves as a filling for the voids between coarse aggregate and fine aggregate in the AC-WC mixture. The filler has a significant effect on the marshall characteristics of the AC-WC mixture even though it is only as a filler. This study aims to investigate the effect of fly ash, volcanic ash, rice husk ash on marshall characteristics. The research data obtained from secondary data based on previous researchers, (Pratama 2021) for fly ash filler, (Rezi 2021) for volcanic ash filler, (Malacca 2021) for rice husk ash filler. The data is in the form of variations in the percentage of filler (fly ash, rice husk and volcano ash) with the same asphalt content. The sample was processed for statistical testing using SPSS version 26 software to determine the effect of asphalt content and filler percentage on marshall characteristics. Optimum Asphalt Content (OAC) test results obtained 6.1% fly ash, 6.2% volcanic ash, 6.7% rice husk ash. The test results on Marshall showed the most influential filler in the 2% rice husk ash filler with density, stability, Marshall Quontient (MQ) and VMA values, while the Flow value obtained the highest value in 1% volcanic ash filler. For the VFB of fly ash and rice husk ash, there was a decrease in the value of the filler content of 2% and 2.5% and an increase in the filler content of 3%. The results of statistical tests using SPSS show that those that have a significant positive linear influence on the asphalt content and filler percentage are Stability and Marshall Quotient (MQ). Research has contributed to research in the field of materials for AC-WC mixtures. © 2024, Institute of Technology PETRONAS Sdn Bhd.

关键词： Fillers

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Atmospheric extinction coefficients and night sky brightness at ITB-Undana remote telescope site

Atmospheric extinction coefficients and night sky brightness...

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2023 International Symposium From the Universe Back to Earth: Developing Astronomy to Meet Today's Natural Challenges

作者： Yusuf, M. Yap, F. Ramadhan, S. Jatmiko, A.T.P. Ramadhan, D.G. Perhati, T. Arwinata, H.I. Satya, L. Premadi, P.W. Louk, A.C. Putra, M. Bosscha Observatory Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Indonesia Astronomy Study Program Institut Teknologi Bandung Indonesia Physics Study Program Faculty of Sciences and Engineering Universitas Nusa Cendana Indonesia

A remote telescope system has been established at Universitas Nusa Cendana, Kupang. Bosscha Observatory, Institut Teknologi Bandung (ITB), and the Physics study program at Universitas Nusa Cendana (Undana) collaborated to develop the system. The ITB-Undana Telescope system has a QSI 616 CCD camera and BV RI Bessel filter attached to a 20-cm (f/10) Schmidt-Cassegrain reflector. Several research and public outreach activities have been conducted using the ITB-Undana remote telescope throughout 2023. When establishing a new astronomical observation site, it is imperative to conduct sky characterization and quality assessment. This process involves measuring night sky brightness and atmospheric extinction coefficients. In May 2023, we observed photometric standard stars using the absolute photometry technique with BV RI Bessel filters. We also utilized the Sky Quality Meter (SQM) to measure night sky brightness over three nights from May 24th to May 26th, 2023, to compare the sky brightness values obtained through the absolute photometry method. Our initial measurement shows a first-order extinction coefficient value ranging from kb′ = 0.269 to 0.520, kv′ = 0.216 to 0.297, kr′ = 0.019 to 0.206, and ki′ = 0.127 to 0.163, for B, V, R, and I filter, respectively. Application of extinction coefficient value in the sky field gives a mean sky brightness value in V bandpass, Vsky = 19.431 ± 0.022, with color index (B - V )sky = 0.492 ± 0.039. These night sky brightness values are suitable for measurements using the SQM. © Published under licence by IOP Publishing Ltd.

关键词： Luminance

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