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The implementation of SNI 8518:2018 and SNI 8519:2018 in the primary school of Jabodetabek area: A preliminary results

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AIP Conference Proceedings 2022年第1期2664卷

作者： Yanto Yanto Wibawa Prasetya Joshua Utoyo Gregorius S. Kenzie 1Industrial Engineering Study Program Faculty of Engineering Atma Jaya Catholic University of Indonesia Jalan Raya Cisauk-Lapan No. 10 Sampora Cisauk Tangerang Banten 15345 INDONESIA

The aim of this research is to evaluate the implementation of a new national standard SNI 8518:2018 for chair and SNI 8519:2018 desk by the school authorities in the metropolitan area of Jakarta. Several 190 type sizes of the predetermined desk and chair dimensions from 114 primary schools were measured and evaluated according to the dimensions in the new national standard SNI 8518:2018 and SNI 8519:2018. There are 5 dimensions that were evaluated: the height, width, depth, and backrest height (for chair), and desk height. To evaluate the dimensions of the chair in SNI 8518:2018 and desk in SNI 8519:2018, each evaluated dimension was compared to identify the compatibility or incompatibility among them. Results showed that most dimensions of the chair provided by school authorities did not comply with the dimensions issued in the SNI 8518.2018 with a percentage of 93.7%. Similarly, desk height provided by school authorities also did not comply with SNI 8519.2018 with a percentage of 81.1%. This study showed that most dimensions of classroom furniture in the primary schools under study did not follow the dimensions issued in the national standard SNI 8519:2018 for desk and SNI 8518:2018 for chair.

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Robust Adaptive Safety-Critical Control for Unknown Systems with Finite-Time Element-Wise Parameter Estimation

arXiv

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arXiv 2021年

作者： Wang, Shengbo Lyu, Bo Wen, Shiping Shi, Kaibo Zhu, Song Huang, Tingwen School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu611731 China Australian AI Institute Faculty of Engineering and Information Technology University of Technology SydneyNSW2007 Australia School of Information Science and Engineering Chengdu University Chengdu611040 China School of Mathematics China University of Mining and Technology Xuzhou221116 China Science Program Texas A & M University at Qatar Doha23874 Qatar

Safety is always one of the most critical principles for a system to be controlled. This paper investigates a safety-critical control scheme for unknown structured systems by using the control barrier function (CBF) method. Benefited from the dynamic regressor extension and mixing (DREM), an extended element-wise parameter identification law is utilized to dismiss the uncertainty. On the one hand, it is shown that the proposed control scheme can always guarantee the safety in the identification process with noised signal injection excitation, which was not considered in the previous study. On the other hand, the element-wise estimation process in DREM can minimize conservatism of the safe adaptive process compared to other existing adaptive CBF algorithms. The stability as well as the forward invariance of the presented safe control-estimation scheme is proved. Furthermore, the robustness of the scheme under bounded disturbances is analyzed, where a robust CBF with modest conditions is used to ensure safety. The framework is illustrated by simulations on adaptive cruise control, where the slope resistance of the following vehicle is robustly estimated in finite time against small disturbances and the potential crash risk is avoided by the proposed safe control scheme. © 2021, CC BY-NC-ND.

关键词： Parameter estimation

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Processing mocaf into pie susu with the addition of super food 'spirulina'

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Journal of Physics: Conference Series 2021年第1期1810卷

作者： R P Ariani I A P H Ekayani L Masdarini Family Welfare Education Study Program Program Study of Vocational Education for Culinary Arts Faculty of Engineering and Vocational - Ganesha University of Education

The purpose of this study was to obtain pie susu mocaf-spirulina products with local fruit varieties (pineapple and Balinese grapes). Mocaf (modified cassava flour) has characteristics similar to low protein flour and gluten free. Spirulina is a type of blue-green algae that is considered a super food because of its nutritional properties that are very good for health. The research method includes 1) experimental trials of the formula for mocaf spirulina pie susu, in the variation of the addition of spirulina to the formulation of mocaf pie susu 2) conduct an Organoleptic Test, with an instrument using the Visual Analog Score (VAS) for the Hedonic test (preference) 3) Perform an Organoleptic Test, with an instrument using VAS for the Hedonic Quality test (quality). The results showed: 1) obtained a pastry formulation (skin) of mocaf pie susu with the addition of 2.5 gr of spirulina (0.5% of the weight of the ingredients) ained mocaf pie susu formulation with the addition of 2.5gr spirulina to mocaf pie susu with pineapple and grape vla; 2) The level of preference for mocaf spirulina pie susu (pineapple vla and grape vla) is the color of the likes category, the texture of the likes, the aroma of the likes and the taste of the likes. 3) the quality level of mocaf spirulina pie susu (pineapple vla and grape vla) is greenish color, crunchy texture, pastry fragrant aroma and sweet taste.

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Android Based Heart-rate Monitoring System using ECG Sensor

Android Based Heart-rate Monitoring System using ECG Sensor

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International Conference on Sustainable engineering and Creative Computing (ICSECC)

作者： Rosalina Grace Selina Rila Mandala Faculty of Computing Information Technology Study Program President University Bekasi Indonesia School of Electrical Engineering and Informatics Bandung Institute of Technology Bandung Indonesia

ISBN: (纸本)9781728175898

This research aims to help the user monitor their heart’s condition and notify other people in case of an emergency due to an abnormal heartbeat (normal heartbeat around 60-100 beats per minute). From the heart rate graph, the user could do a consultation with an expert in the nearest hospital using a map feature that will show the nearest hospital with a 1 KM radius from the user’s current location. The heart is undeniably an essential part of the human body system. The heart's missions are to pump blood to the lungs to expel the waste carbon dioxide that resulted from the respiration and pump blood that will deliver oxygen throughout the human body's circulation system. While the blood that carries oxygen being pumped throughout the human body, the heart will provide the oxygen to all cells. Body cells need to use oxygen to get the energy from food through a process called cellular respiration. Monitoring our heartbeat and pulse rate can increase people’s awareness about their heart’s health, motivating, and encouraging people to maintain a healthy eating plan and exercise. This research will be implemented ECG Sensor. The sensor will then send the data to the android application via HC-06 Bluetooth module. Monitoring the heart rate and analyzing the user’s heartbeat will be done in the android with a microcontroller device's help.

关键词： Bluetooth Heart beat Hospitals Microcontrollers Lung Electrocardiography Biomedical monitoring

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Preliminary formulation of non-linear consolidation coefficients for unsaturated soil

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AIP Conference Proceedings 2024年第1期3019卷

作者： Aris Rinaldi Lilik Eko Widodo Reza Adhi Fajar Junior Water Resources Expert Technical Implementation Unit for Dam Engineering Ministry of Public Works and Housing Gedung Balai Teknik Bendungan. Jl Sapta Taruna Raya Jakarta Selatan 12310 Indonesia Research Group of Earth Resource Exploration Faculty of Mining and Petroleum Engineering Bandung Institute of Technology Jl. Ganesha No. 10 Bandung 40132 Indonesia Postgraduate Student of Doctoral Program Mining Engineering Bandung Institute of Technology Hydrogeology Lab. Jl. Ganesha No. 10 Bandung 40132 Indonesia

The water content is the amount of water contained in the medium – in this case, soil. The water contained in the soil represents soil condition, from the surface down to the ground. The surface position of the land to the groundwater table is referred to as the vadose zone, while the region below the groundwater level is called the saturated soil zone. The capillary fringe is a transitional zone between the vadose zone and the saturated soil zone. The unsaturated zone is defined as the part of the vadose zone between the ground surface and the capillary fringe. Distribution of water content in the soil is closely related to infiltration and consolidation processes. Infiltration is the process of water flow from the surface into the ground, while consolidation is the process of water dissipation from the soil pore medium due to the loading that causing a decline in volume or the soil pore cavity. Infiltration and consolidation are closely related to the compositional changes in water and air content of the soil. Groundwater scientific developments, in terms of engineering, science and technology, have been impactful. This research involves the investigation of a correlation between the distribution of water content and unsaturated consolidation and is expected to offer new insights in groundwater science.

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Optimization of water treatment process performance of Duren Seribu Water Treatment Plant in Depok City: water quality and design parameters

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IOP Conference Series: Earth and Environmental Science 2021年第1期896卷

作者： R Hanifa S Adityosulindro N P S Wahyuningsih Environmental Engineering Study Program Department of Civil and Environmental Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok 16424 Indonesia

Duren Seribu Water Treatment Plant (WTP) plays a role in fulfilling water needs due to the increase in population growth. This study aims to evaluate the performance of the WTP and the potential for capacity uprating from the aspect of conformity to water quality standards, removal efficiency, and design parameters. Data collection was carried out by observation, measurement, and sampling. The result showed that raw water quality complies with the quality standards and is influenced by seasons. Meanwhile, the quality of drinking water produced for the parameters of pH, turbidity, TDS, organic matter, iron, and total coliform has complied with the quality standards. The efficiency removal of turbidity, TDS, organic matter, and iron occurred in conventional processing units were 94.6%, 70.5%, and 90.9%, and the total coliform removal efficiency was 1.8-log (67.05%). Based on the assessment of the design criteria, there are design parameters of the unit that require technical improvement such as detention time of flocculation unit, velocity and detention time in tube settler sedimentation unit, and the capacity of Duren Seribu WTP could be increased by 10% or up to 110 liters/second.

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Comparison of resource assessment methods with numerical reservoir model between heat stored and experimental design: Case study Ciwidey-Patuha geothermal field 7

Comparison of resource assessment methods with numerical res...

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7th ITB International Geothermal Workshop 2018, IIGW 2018

作者： Ashat, Ali Pratama, Heru Berian Itoi, Ryuichi Department of Earth Resources Engineering Faculty of Engineering Kyushu Univ. Fukuoka819-0395 Japan Geothermal Engineering Study Program Institut Teknologi Bandung Jl. Ganesha No.10 West-Java-Bandung Indonesia

A successful geothermal field size assessment requires integrative data analysis of all aspects to determine the optimum capacity to be installed. Nowadays, numerical simulation becomes a powerful tool in a geothermal resource assessment process. However, this method involves significant uncertainty of subsurface information as an input. Then a study of resource assessment methods, such as heat stored and experimental design, needs inputs coming from the result/output of reservoir numerical. The calculation of both methods based on a range of reservoir parameter values can be carried out using stochastic methods (Monte Carlo Simulation). It applies a probabilistic method of resource assessment to capture uncertainties. A sophisticated numerical reservoir model of Ciwidey-Patuha Geothermal Field, West Java-Indonesia in the natural state condition was used as a case study to determine the generating potential of the reservoir. © Published under licence by IOP Publishing Ltd.

关键词： Geothermal fields

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Correlation between digital literacy and environmental literacy of 11th-grade students

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AIP Conference Proceedings 2024年第1期3106卷

作者： Mimien Henie Irawati Al Muhdhar Shinta Amrul Khoirina Muhamad Arjuna Salim Racy Rizky Abdillah Diana Hernawati Diki Muhamad Chaidir Muhammad Iqbal Akbar Lely Mardiyanti Mohammad Qodri Department of Biology Faculty of Mathematics and Sciences Universitas Negeri Malang Malang East Java Indonesia Department of Biologi Education Universitas Siliwangi Tasikmalaya Wesst Java Indonesia Department of Electrical and Informatics Engineering Faculty of Engineering Universitas Negeri Malang Malang East Java Indonesia Study Program of Biological Education Universitas Jambi Jambi Indonesia SMA Negeri 1 Batu Batu East Java Indonesia

The rapid development of technology, information, and communication requires students to master digital literacy. In addition, the rapid development of technology also affects environmental conditions, so it is necessary to master environmental literacy to understand and interpret environmental conditions, as well as build students’ awareness of environmental issues. This study aims to determine the correlation between digital literacy and student environmental literacy. The population in this research includes 11th-grade students of SMAN 1 Batu. The research sample amounted to 102 students, and the sampling technique used was purposive random sampling. Data were collected through digital literacy questionnaires, environmental literacy questionnaires, and environmental literacy tests. The data were tested for normality and homogeneity prerequisites and then analyzed using the Pearson Correlation statistical test. The results obtained show that the average digital literacy score of students is 105.1, including the high category, and the average student environmental literacy score is 279.7, included in the medium category. The high level of digital literacy will make students more critical in accessing technology and digital media. Digital literacy includes the process of finding, using multiple sources, evaluating, and using information to produce original products, with the maximum application of digital literacy, which is expected to support students’ environmental literacy in providing knowledge, understanding, and building an attitude of caring for the environment. The data obtained shows that there is a positive relationship between digital literacy and environmental literacy.

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The effect of roof surface area on the quality and quantity of rainwater runoff in the rainwater harvesting system

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IOP Conference Series: Earth and Environmental Science 2021年第1期623卷

作者： K Faza N Suwartha Environmental Engineering Study Program Department of Civil Engineering Faculty of Engineering Universitas Indonesia Kampus UI Depok Depok 16424 Indonesia

Rainwater harvesting system is one of the alternative sources of clean water supply to be used during the dry season. The purpose of this research was to analyze the effect of roof area on the quality and quantity of rainwater runoff and determine the potential of rainwater runoff based on quality standards. The observation was conducted 2 different times and collected 23 samples of rainwater runoff from 11 different roof areas. Daily rainfall intensity data during the observation period were analyzed to estimate the quantity of rainwater runoff discharges from the rooftop catchment area. The results showed that parameters that meet the clean water quality standard are turbidity, iron, manganese, nitrate, and nitrite in both observation time. While the color, pH, TDS, and E. coli exceeds the clean water quality standard. The highest rainwater runoff volume was 20.59 m3 for the first week and the second week was 14.06 m3. In conclusion, the rooftop catchment area significantly affects the quantity and quality of rainwater runoff, and potentially be used as a clean water supply through a simple water treatment unit.

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Probabilistic approach of resource assessment in Kerinci geothermal field using numerical simulation coupling with monte carlo simulation 6

Probabilistic approach of resource assessment in Kerinci geo...

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6th ITB International Geothermal Workshop, IIGW 2017

作者： Hidayat, Iki Sutopo Pratama, Heru Berian Study Program of Petroleum Engineering Faculty of Mining and Petroleum Engineering Bandung Institute of Technology Indonesia Study Program of Geothermal Engineering Faculty of Mining and Petroleum Engineering Bandung Institute of Technology Jl. Ganeca No. 10 West java Bandung40132 Indonesia

The Kerinci geothermal field is one phase liquid reservoir system in the Kerinci District, western part of Jambi Province. In this field, there are geothermal prospects that identified by the heat source up flow inside a National Park area. Kerinci field was planned to develop 1×55 MWe by Pertamina Geothermal Energy. To define reservoir characterization, the numerical simulation of Kerinci field is developed by using TOUGH2 software with information from conceptual model. The pressure and temperature profile well data of KRC-B1 are validated with simulation data to reach natural state condition. The result of the validation is suitable matching. Based on natural state simulation, the resource assessment of Kerinci geothermal field is estimated by using Monte Carlo simulation with the result P10-P50-P90 are 49.4 MW, 64.3 MW and 82.4 MW respectively. This paper is the first study of resource assessment that has been estimated successfully in Kerinci Geothermal Field using numerical simulation coupling with Monte carlo simulation. © Published under licence by IOP Publishing Ltd.

关键词： Monte Carlo methods

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