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Assessment of road traffic performance of the Tsunami evacuation road in Padang Municipality area based on the traffic volume simulation approach 4

Assessment of road traffic performance of the Tsunami evacua...

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4th International Conference on Earthquake engineering and Disaster Mitigation, ICEEDM 2019

作者： Yossyafra, Yossyafra Fitri, Nurhuda Sidhi, Rahmat Punama Yosritzal, Yosritzal Mazni, Deni Irda Civil Engineering Department Faculty of Engineering Universitas Andalas Indonesia Civil Engineering Study Program Universitas Dharma Andalas Indonesia

There are many cities on the west coast of the Sumatra, which are at high risk of the Tsunami disaster. Regional Regulations on Regional Spatial Planning for each City/Regency have compiled disaster mitigation by constructing several evacuation roads. This study wants to illustrate: what are the volume of traffic generation and road performance, if there is a Tsunami disaster. The simulation is developed by predicting traffic volume based on parameters, population density, vehicle ownership, land use, and activities in the area around the road. The assessment was carried out on two tsunami evacuation roads in the city of Padang, West Sumatra Province. The results show that the highest traffic volume occurred in the period from 06.30 a.m until 3:00 p.m., during school activities. One of the roads will not be able to accommodate the volume of traffic during a disaster, due to significant traffic congestion. This study shows that: (1) the period of activity and land use are two main parameters, which must be considered in designing tsunami evacuation roads, (2) The degree of saturation ratio and the ratio between the capacity of sections of Tsunami evacuation routes can be proposed as a parameter for assessing the performance of Tsunami evacuation roads in urban areas. © 2020 The Authors, published by EDP Sciences.

关键词： Tsunamis

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The impact of copper oxide nanoparticles reinforced nanocellulose acetate membrane on antibacterial and dye removal Potency

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Results in engineering 2024年 23卷

作者： Yanuhar, Uun Suryanto, Heru Amin, Muhamad Maulana, Jibril Mohamad Lal, Mohammad Tamrin Caesar, Nico Rahman Study Program of Aquatic Resources Management Faculty of Fisheries and Marine Sciences Universitas Brawijaya East Java Indonesia Department of Mechanical and Industrial Engineering Faculty of Engineering Universitas Negeri Malang Jl. Semarang 5 Malang65145 Indonesia Department of Aquaculture Faculty of Fisheries and Marine Universitas Airlangga Jl. Dharmahusada Permai Surabaya60115 Indonesia Borneo Marine Research Institute Universiti Malaysia Sabah Jalan UMS Sabah Kota Kinabalu88400 Malaysia Doctoral Program of Environment Science Post Graduate Program Universitas Brawijaya Jalan Veteran East Java Malang65145 Indonesia

With the rapid growth of the textile, leather, cosmetics, and pharmaceutical industries, concerns about pollutants in these sectors, especially dye pollutants, are increasing. This research characterizes bacterial nanocellulose acetate membranes made from Sargassum extract reinforced with copper oxide nanoparticles and tests their antibacterial properties and dye removal in water. Sargassum sp. extract was fermented using Acetobacter xylinum for 10 days, producing bacterial nanocellulose, which was then esterified to create bacterial nanocellulose acetate. Copper oxide nanoparticles were added to the bacterial nanocellulose acetate solution in varying concentrations, cast, and oven-dried. The membrane was analyzed using Fourier-transform infrared spectroscopy, X-ray diffraction, scanning electron microscope, antibacterial activity, and dye removal. Results showed uniform copper oxide nanoparticles distribution on the membrane surface. Structure analysis revealed diffraction peaks at 35.44° and 38.57°, indicating a reduced crystalline index but improved membrane effectiveness. Antibacterial tests showed a zone of inhibition against bacterial growth, increasing with higher copper oxide nanoparticle content. The addition of copper oxide nanoparticles also influenced the dye removal capacity for Metanil Yellow, Congo Red, Eosin Yellow, Methylene Blue, and Malachite Green. The kinetic analysis showed that the adsorption process follows a pseudo-first-order model, with higher correlation coefficients (R2) compared to the pseudo-second-order model. © 2024 The Author(s)

关键词： Fourier transform infrared spectroscopy

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Prototype Design of Smart Diabetic Shoes with Lora Module Communication

Prototype Design of Smart Diabetic Shoes with Lora Module Co...

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Computer Science, Information Technology and engineering (ICCoSITE), International Conference on

作者： Purwono Purwono Asmat Burhan Khoirun Nisa’ Sony Kartika Wibisono Iis Setiawan Mangkunegara Pramesti Dewi Alfian Ma’Arif Iswanto Suwarno Department of Informatics Universitas Harapan Bangsa Purwokerto Indonesia Department of Anesthesiology Nursing Universitas Harapan Bangsa Purwokerto Indonesia Department of Information Technology Universitas Harapan Bangsa Purwokerto Indonesia Nursing Study Program Universitas Harapan Bangsa Purwokerto Indonesia Department of Electrical Engineering Universitas Ahmad Dahlan Yogyakarta Indonesia Department of Engineer Professional Program Universitas Muhammadiyah Yogyakarta Yogyakarta Indonesia

Diabetes is a disease that affects many people in the world. Diabetes mellitus is a type of metabolic disease in a person who suffers from blood glucose levels with extreme conditions, namely insufficient insulin production in the human body. Monitoring diabetes is an important concern for researchers because it can be useful for improving the quality of the nursing service system. One of the common conditions in diabetic patients is ulceration which is difficult to detect on time. Technology can minimize the total cost of monitoring chronic diseases such as Diabetes continuously and on time. This research focuses on solutions to produce IoT-based smart diabetic shoes that utilize pressure sensors and the temperature of the feet of people with diabetic feet. Smart diabetic shoes are made using the Lora E32 module to be applied to areas with poor internet connections. The results of the testing carried out for 60 seconds in this study succeeded in detecting the area of the foot that experienced the greatest pressure, which was located on the rear footrest with a portion of pressure of around 25 – 28% of the total body weight. The patient's foot temperature increases when the pedestal load is greater. The Lora E32 module also functions as a media transmitter and receiver at a distance of 2.2 km in sending sensor data.

关键词： Temperature sensors Pressure sensors Transmitters Web services Footwear Receivers Diabetes

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Analysis on Business Development and Pricing for Electric Vehicle Charging in Indonesia 3

Analysis on Business Development and Pricing for Electric Ve...

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2021 3rd International Conference on E-Business and E-Commerce engineering, EBEE 2021

作者： Santoso, Budi Wahyu Purwanto, Widodo Sustainable Energy System and Policy Research Cluster Universitas Indonesia Depok16424 Indonesia Energy System Engineering Study Program Faculty of Engineering Universitas Indonesia Depok16424 Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Indonesia Depok16424 Indonesia

ISBN: (纸本)9781450387392

Electric Vehicles (EVs) has important role in the successful of energy transition and reducing dependency from fossil fuels. Indonesia has started to develop EVs. One of the challenges is charging infrastructure development, includes business model and pricing scheme to achieve business feasibility. This study analyses business model and pricing mechanism for public charging station in Indonesia where a case study is conducted in Jabodetabek area. Monte-Carlo method is used to estimate charging demand based on current travel data and estimated EVs population in 2025. Cash flow method is used to calculate feasible price for public charging with Fixed and ToU price schemes. EVs home charging cost is also calculated to investigate competitiveness of public charging price for each business model. The results show that prices of public charging business model are competitive compared to cost of home charging. The proposed ToU price scheme for public charging is more competitive compared to fixed price scheme, and also effective to minimize grid load escalation of home charging during busy periods. Furthermore, daily cost of EV charging is calculated and compared to fuel cost of ICE vehicles. The result shows that EV charging cost is lower than fuel cost of ICE vehicles. © 2021 ACM.

关键词： Costs

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Revitalization of the ergo-spiritual oriented Melukat place improves physiological fitness and community care attitude on the maintenance and conservation of water resources

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AIP Conference Proceedings 2024年第1期3132卷

作者： I. Made Sutajaya I. Wayan Sukra Warpala Ni Putu Sri Arnita Ni Luh Putu Mia Lestari Devi Ni Made Gandhi Sanjiwani Ni Made Citra Aryani Biology Education Study Program Faculty of Mathematics and Natural Sciences Universitas Pendidikan Ganesha Singaraja Bali Indonesia Biomedical Engineering Study Program Bali Dwipa University Denpasar Bali Indonesia Occupational Health and Safety Study Program Bali International University Denpasar Bali Indonesia

The purpose of the study was to prove that the revitalization of the ergo-spiritually oriented Melukat place can improve the physiological fitness and caring attitude of the community towards the maintenance and preservation of Water Resources in Peliatan Village. The method used is a quasi-experimental and the research design is a posttest only group design. The independent variables, revitalization of the Melukat site ergo-spiritually oriented and the dependent variables: (1) physiological fitness with indicators of pulse rate, musculoskeletal complaints, and respiration frequency; (2) community understanding of water resources maintenance strategies; and (3) community care attitude towards water resources maintenance strategy. The data obtained were analyzed descriptively by looking for the percentage change and continued with the paired t difference test because the data were normally distributed at a significance level of 5%. The results showed that: (1) there was a significant increase in physiological fitness (p<0.05) seen from the improvement in physiological responses to: (a) pulse rate as a physiological load parameter by 15.3%, (b) musculoskeletal system by 17.2%, and (c) respiratory frequency of 11.5%, (2) attitude of caring for the community towards the maintenance strategy of 27.8%, and (3) preparedness of community care for the preservation of Water Resources by 23.6% between before and after revitalization. The conclusion, that the revitalization of the ergo-spiritually oriented Melukat place can improve physiological fitness and people's caring attitudes towards the maintenance and preservation of Water Resources.

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Benchmarking A New Dataset for Coffee Bean Defects Classification Based on SNI 01-2907-2008

Benchmarking A New Dataset for Coffee Bean Defects Classific...

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Information Technology Research and Innovation (ICITRI), International Conference on

作者： Made Windu Antara Kesiman Ismail Sulaiman I Made Dendi Maysanjaya Kadek Teguh Dermawan Dept. of Informatics Engineering Virtual Vision Image and Pattern Research Group Universitas Pendidikan Ganesha Bali Indonesia Program Study Teknologi Hasil Pertanian Faculty of Agriculture Universitas Syiah Kuala Banda Aceh Indonesia

To develop a device which can determine automatically the quality of coffee beans, the module to identify and classify coffee bean defects based on digital images processing is needed. For this reason, a new dataset of coffee bean defect images is built in this research. 3 classes were defined and obtained from the image sample of coffee beans, namely good coffee beans, defective coffee beans, and non-valid coffee beans. Moreover, specifically for the class of defective coffee beans, the new dataset also provides ground truth image samples for 17 classes of coffee bean with defects which was defined by SNI 01-2907-2008. Two Convolutional Neural Network (CNN) architecture models, InceptionResnetV2 and MobileNet, were tested to do an initial benchmarking process to classify coffee beans and their types of defects. Both architectures show very promising results to classify coffee bean images in 3-classes. With 92.52% of accuracy, MobileNet outperforms slightly InceptionResnetV2. Both architectures are fairly easy to classify the 3-classes of coffee bean images. But the experimental results indicate that the task of classifying more specifically the 17 classes of different types of defects in coffee beans is still quite difficult. Although the accuracy of InceptionResnetV2 of 53.35% seems much higher than the accuracy of MobileNet, the two architectures still seem to be struggling to identify each type of coffee bean defect. This benchmarking results will serve as the initial basis that helps to analyze the level of complexity of problems in the coffee bean new dataset, as well as the basis for further investigations and research processes to improve the performance of the future coffee bean classifier machine.

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The influence of aging time variations on the fatigue life of aluminum alloy 2024-T351

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AIP Conference Proceedings 2024年第1期3053卷

作者： I. Made Astika I. Ketut Suarsana Dewa Ngakan Ketut Putra Negara Study Program of Mechanical Engineering Faculty of Engineering Udayana University Badung Bali 80361 Indonesia

Aluminum and its alloys are used to make a number of automotive components. It is due to aluminum’s light weight, anti-corrosiveness, formability, and affordable price. However, numerous procedures have been carried out to boost its strength due to mechanical characteristics, one of which is artificial aging. The effects of aging on the fatigue life of aluminum 2024-T351 will be examined in this study. The technique of treating the solution involved heating it to 500 oC for an hour and then immediately cooling it to room temperature. By reheating the aluminum alloy to 180 oC and maintaining heat there for a variety of 2, 4, and 6 hours, the fake aging process was continued. The goal was to obtain various precipitation types in anticipation of an increase in the material’s fatigue life. Then, a reversed bending test was carried out with loads of 1.0, 0.9, 0.7, 0.5, and 0.4 σu. The results of the study indicated that aging time had an influence on the fatigue life of aluminum alloy 2024-T351. Fatigue life lengthens with increasing aging time. The increase in fatigue life ranges from 13.3–63.3% compared to aluminum without heat treatment.

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Alternative determination of customer classification of wastewater management services

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AIP Conference Proceedings 2024年第1期3110卷

作者： Ida Ayu Rai Widhiawati Ngakan Made Anom Wiryasa Dewa Ketut Sudarsana Kadek Diana Harmayani Doctor of Engineering Study Program Udayana University Denpasar Indonesia Department of Doctoral Program Faculty of Engineering Udayana University Denpasar Indonesia

To fulfill the operating and maintenance costs of waste water management in Bali, Bali Provincial Regulation No. 2 of 2011 concerning Public Service Retribution, where the manager began to collect wastewater levies starting from September 2011. However, from 2011 to 2021 there was still no change in rates. In real conditions, it was found that household customers and the lodging sector did not match the registered classification. The purpose of this research is to design a new customer classification and levy rates that can meet the needs for the operation and maintenance of centralized wastewater management. The results of this study found that 26.67% of households and 82.35% of non-star hotels were not by their classification. Two household alternatives and one alternative for the lodging sector were designed to increase equitable income for the community. The alternative category of household classification assessment uses an assessment category based on the type of house (design I) and income (design II). In the classification of the lodging sector, star hotels are divided into 4 & 5-star hotels, and 1 – 3-star hotels (design III). The results of the income for the first-third design increased by 33.68%; 25.25%; and 25.39%.

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Numerical study on Ammonia Injection Location of Ammonia and Low-Rank Coal Co-Firing in 1000 Mwe Ultra Super Critical Carolina-Type Boiler

SSRN

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SSRN 2023年

作者： Ahmad, Azaria Haykal Darmanto, Prihadi Setyo Juangsa, Firman Bagja Mechanical Engineering Study Program Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Jl Ganesha 10 Bandung40132 Indonesia Energy Conversion Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Jl Ganesha 10 Bandung40132 Indonesia

Coal-fired power plants are major contributors to global CO2 emissions, prompting the need for strategies to mitigate their environmental impact. Ammonia co-firing has emerged as a promising solution for reducing CO2 emissions. This study employs computational fluid dynamics (CFD) simulations to optimize ammonia injection in a 1000 MW Ultra Super Critical Coal Fired Power Plant. Initially, four injection locations (equally divided, top burner, bottom burner, mid burner) were simulated at a 20% thermal energy co-firing ratio. The bottom burner injection showed the lowest NOx emissions. Building on these findings, the focus shifted to varying injection locations, particularly the bottom burner. Increased co-firing ratios led to reduced gross power and derating due to altered heat absorption and water content from ammonia combustion. Flue gas properties and composition were affected. NOx emissions showed a complex trend with initial reductions up to 20% due to ammonia's effect, but exceeding 20% co-firing led to dramatic NOx increases, surpassing limits at 60% co-firing. Burnout ratio linearly increased due to low unburned ammonia. However, coal burnout exhibited a different pattern, initially increasing, then declining after 40% co-firing. This was attributed to the char-NO reaction counteracting decreased coal volatilization caused by high ammonia levels. © 2023, The Authors. All rights reserved.

关键词： Coal

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The effect of artificial support material existence on removal of organic and nutrient in laboratory scale using plug flow reactor (PFR) 6

The effect of artificial support material existence on remov...

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6th Environmental Technology and Management Conference, ETMC 2019

作者： Aphirta, Sarah Soewondo, Prayatni Maisa Zakiyya, Nida Wulandari Putri, Dyah Setiani Muntalif, Barti Environmental Engineering Master Program Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Program Study of Environmental Engineering Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia

Artificial support material was examined to determine the removal capacity of organic pollutants and nutrients on laboratory scale using PFR system. The experiment was performed using artificial water with similar characteristics to Cikapayang River in three PFRs of 10.78 L. The PFRs were made of PVC pipes filled with an inert chemical substrate as an artificial support material. The process of pollutants removal in the PFR relies on a biological layer (biofilm) grown on the surface of the material support. Three type of C:N:P ratio used in this study were 30:15:1, 75:25:2, and 180:35:3. The results showed that the maximum removal efficiency of TSS, TN, TP, and COD in the preliminary tests were 85%, 87%, 71% and 79%, respectively. Moreover, the maximum water absorption capacity result was up to 30.8%. Organic substrate removal rate compared with first order and Strover-Kincannon substrate removal models prediction. The best fit model for this experiment was Stover-Kincannon model, with the average correlation coefficient up to 90% for all of the three reactors. SEM analysis shown that the microorganisms shape is coccus with the average size of 5 μm. © 2020 The Authors, published by EDP Sciences.

关键词： Nutrients

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