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Real-time data acquisition system with wireless sensor network on damped harmonic motion

Physics Education 2021年第5期56卷 053004页

作者： Saputra, H. Suhandi, A. Setiawan, A. Permanasari, A. Putra, R.A. Natural Science Education Study Program Universitas Pendidikan Indonesia Bandung Indonesia Physics Education Study Program Universitas Samudra Aceh Indonesia Physics Study Program Faculty of Engineering Universitas Samudra Aceh Indonesia

We suggest a simple, practical device with a wireless sensor network system that can be used to record and display data from a spring oscillation system in real-time on a website. The HC-SR04 ultrasonic sensor was utilized to detect changes in load position in the damped spring oscillation system, and the Node-MCU ESP266 was used to transmit data from sensor readings to the server over the internet network. The damping factor, damping coefficient, and spring damping frequency could be utilized to calculate the exponential function graph fitting outcome. © 2021 IOP Publishing Ltd.

关键词： damped harmonic real-time data acquisition ultrasonic sensor wireless sensor network

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Development of Food Agriculture Based on Superiority Cultivation Area in Tanjung Api-Api, Banyuasin District 5

Development of Food Agriculture Based on Superiority Cultiva...

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5th International Conference on Energy, Environmental and Information System, ICENIS 2020

作者： Umar, Syuhada A. Armanto, M. Edi Siswanto, Ari Yazid, Muhammad Study Program of Environment Science Sriwijaya University South Sumatra Indonesia Faculty of Agriculture Sriwijaya University South Sumatra Indonesia Faculty of Engineering Sriwijaya University South Sumatra Indonesia

Leading commodity development area is a developed area for one or a combination of superior commodities that comply with the land use characteristics that provide the highest farm household's income, communities, and the region. This research was aimed to determine and describe the factors which have a significant effect on the superiority of Tanjung Api-Api (TAA) area, measure and analyze of the superiority of TAA cultivation area for food crops,and formulate a grand strategy matrix for food crops development based on its regional. The descriptive methods, Policy Analysis Matrix (PAM), and Grand Strategy Analysis. The factors which affect the superiority of TAA cultivation area include ecological, socio-cultural, and economic factors. The result shows, rice and corn plants included in the SI category or suitable for cultivation in the TAA region with Soil Mapping Unit (SPT) value of 20.70%. Socio-cultural aspects that affect the development of food agriculture such as the labors, Village Unit Cooperative (KUD), and Farmers Group that support agricultural development. Rice and corn crops have 0.69 and 0.97 on the competitive advantage (PCR) value respectively, therefore the rice and corn plants are concluded to have a competitive advantage. The comparative advantages (DRCR) value shows 0.68 and 0.65 for rice and corn plants respectively, which have comparative advantages and have the potential to develop in TAA area. Food crops in the TAA area are in a good competitive position. The strategy that must be applied under these conditions is to support an aggressive growth policy (Growth-oriented strategy). © The Authors, published by EDP Sciences, 2020.

关键词： Cultivation

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Development of location suitability prediction for health facilities using random forest machine learning in 2030 integrating remote sensing and GIS in West Java, Indonesia

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Environmental Advances 2025年 19卷

作者： Virtriana, Riantini Ihsan, Kalingga Titon Nur Anggraini, Tania Septi Deliar, Albertus Harto, Agung Budi Riqqi, Akhmad Sakti, Anjar Dimara Remote Sensing and GIS Research Group Faculty of Earth Science and Technology Bandung Institute of Technology Bandung 40132 Indonesia Center for Remote Sensing Bandung Institute of Technology Bandung 40132 Indonesia Doctor Program in Program Study of Geodesy and Geomatic Engineering Faculty of Earth Sciences and Technology Bandung 40132 Indonesia Geographic Information Science Universitas Pendidikan Indonesia Bandung 40111 Indonesia Center for Spatial Data Infrastructure Bandung Institute of Technology Bandung 40132 Indonesia

Access to healthcare facilities is crucial in the present day. Healthcare facilities must be proportional to the population in a given area. Therefore, it is important to increase the number of healthcare facilities in regions where there is an imbalance. Proper planning and a sustainability review are necessary when determining locations for healthcare facilities. Environmental changes can affect the suitability of a location in the future. Thus, planning that can predict future suitability conditions is required to ensure that the built locations have high sustainability. This study predicts the suitability of healthcare facility locations in 2030 in West Java using remote sensing and Geographic Information System (GIS). Both static and dynamic data processed at 30×30 meter intervals across West Java will be used. Geospatial and remote sensing data are utilized in the study. Dynamic parameter extrapolation uses data from 2000 to 2018. The random forest machine learning method is employed to obtain the suitability values for healthcare facility locations using existing health facility training data in West Java. The results show changes in the suitability classes of healthcare facilities in each region from 2018 to 2030, with some areas experiencing an increase or decrease in class. This research highlights consistently suitable locations, ensuring their sustainability as healthcare facility sites. © 2024

关键词： GIS Health Facility Machine Learning Remote Sensing

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Carbon dioxide, global boiling, and climate carnage, from generation to assimilation, photocatalytic conversion to renewable fuels, and mechanism

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Science of the Total Environment 2025年 965卷 178629页

作者： Khan, Muhammad Sun, Xiaohui Zada, Amir Azizi, Shohreh Shah, Muhammad Ishaq Ali Khan, Javed Ali Ragab, Ahmed H. Taher, Mostafa A. Abbas, Qumber Han, Changseok College of Civil and Transportation Engineering Shenzhen University 3688 Nanhai Avenue Guangdong Province Shenzhen518060 China Department of Chemistry Abdul Wali Khan University Mardan Mardan23200 Pakistan UNESCO-UNISA Africa Chair in Nanosciences and Nanotechnology College of Graduate Studies University of South Africa Muckleneuk Ridge PO Box 392 Pretoria0002 South Africa Chemistry Department Faculty of Science King Khalid University P.O. Box 9004 Abha61413 Saudi Arabia Biology Department Faculty of Science and Arts King Khalid University Mohail Assir 61321 Saudi Arabia Department of Technologies and Installations for Waste Management Faculty of Energy and Environmental Engineering Silesian University of Technology Gliwice44-100 Poland Program in Environmental and Polymer Engineering of INHA University 100 Inha-ro Michuhol-gu Incheon22212 Korea Republic of Department of Environmental Engineering INHA University 100 Inha-ro Michuhol-gu Incheon22212 Korea Republic of

The increasing CO2 concentration in the atmosphere has substantial impacts on the global temperature. For energy sustainability and minimization of the effects of global warming, an approach to understand CO2 capturing and a carbon neutral culture is extremely essential in the present circumstances. The CO2 emission from vehicles and industries can be minimized using energy cost-effective techniques and can be converted more selectively into reusable fuels via thermochemical, electrochemical, photochemical, photocatalytic, electrocatalytic, biological and inorganic carbonate-based approaches. In this review article, we have discussed the effects of increased global temperature on human beings, economy and climate change. Further, we have discussed the photocatalytic conversion of CO2 (PC-CO2) into gaseous and liquid fuels under solar light driven photocatalysis. The adsorption and activation of CO2, its conversion into various intermediates, their stability and selectivity of the final products have been elaborated comprehensively. The conversion mechanisms of CO2 into CO, CH4, alcohol, aldehyde and carboxylic acid have been discussed in detail. The role of defects and exposed facets of photocatalysts, effect of metal and non-metal dopants, and the additive role of co-catalyst on the mechanisms and selectivity of the conversion products have been discussed comprehensively. Finally, future perspective is discussed to highlight the research gap in the PC-CO2. We hope that this article will help to understand the mechanisms of PC-CO2 and will direct researchers to add their role in the reduction of CO2 to control global warming and make life easier on earth in the coming years. © 2025 Elsevier B.V.

关键词： Kyoto Protocol

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Biogas : Alternative energy on supporting environmentally coffee shop in Samosir Island 5

Biogas : Alternative energy on supporting environmentally co...

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5th Friendly City International Conference: Enhancing Culture, Community and Environment, FCIC 2019

作者： Ginting, Nurzainah Tarigan, Atifah N Royba, Inqilab Akbar Animal Production Study Program Faculty of Agriculture Universitas Sumatera Utara Medan20155 Indonesia Architecture Program Study Faculty of Engineering Universitas Sumatera Utara Medan20155 Indonesia Toba Lake and Sustainable Tourism Working Group Universitas Sumatera Utara Medan20155 Indonesia

Samosir Island is one of tourism destination in Indonesia and there was an increasing of coffee shop number. This research tries to investigate how much financial profit received by coffee shop if it use biogas as a new energy source. This research had been conducted from April to June 2018. Research parameter were production costs, income, revenue, Benefit Cost Ratio, Revenue Cost Ratio, Return On Investment, Break Even Point, and identify opportunities, threats, strengths and weaknesses by SWOT analysis to identify whether the community of Samosir is willing to use biogas. The results of financial analysis namely production cost IDR 1,964,500;income of IDR.4,360,000;revenue of IDR. 2,303,000;B/C (%) was 79.7;R/C (%) was 151;ROI (year) of 1.6;BEP Price was IDR. 5,302;BEP Production of 361 glass. By SWOT Analysis it was known that development strategies are taken place include socialize biogas technology, benefits of biogas on energy, fertilizer and soil quality to the community, benefits of biogas in saving fuel purchases and providing biogas stock devices on biogas group. The result showed that biogas was worthy of being used as a new energy source on the coffee shop business on Samosir Island. © Published under licence by IOP Publishing Ltd.

关键词： Biogas

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Thin plate welding of Al 5083 alloy by GMAW applied for electric substations equipment

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AIP Conference Proceedings 2023年第1期2837卷

作者： Lydia Anggraini Erwin Siahaan Lutfi Fadilah Study Program of Mechanical Engineering Faculty of Engineering President University Jl. Ki Hajar Dewantara Cikarang Bekasi 17550 Indonesia Study Program of Mechanical Engineering Faculty of Engineering Tarumanagara University Jl. Letjen S. Parman No. 1 West Jakarta Jakarta 11440 Indonesia

In order to fill the manufacture demand of electric substation equipment, materials with the characteristics of rust-resistant, lightweight and easy to find are required. Aluminum 5083 alloy is the best candidate to use because one of advantages is excellent thermal conductivity. Gas Metal Arc Welding (GMAW) is used because it has high welding efficiency, it does not need to change welding wire frequently, can be used for all types of materials and welding positions, and does not produce scale or slag. The purpose of this research is to evaluate the GMAW welding parameters on the mechanical properties of Al 5083 alloy. The specimen of Al 5083 alloy is cut into V Groove with 30° or 60° angle each side, for 6 pieces with dimension of 300 mm length and 150 mm width, before welding process. The welding process is done using the manipulator machine with constant speed and various currents followed by mechanical testing. The mechanical testing results obtained, there is no significant difference on the tensile strength results of all specimens with different welding parameters. However, the elongation percentage result obtained, the highest strain is about 17% of the Al 5083 alloy thin plate specimen with 225 A current. It can be concluded that the Al 5083 alloy material through the GMAW process with appropriate has met the requirement of mechanical properties to be applied for the electric substation equipment.

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Fracture Zone Analysis Based on Property Electrical Borehole Image Log and Geomechanic Geothermal Field Solok, West Sumatra 1

Fracture Zone Analysis Based on Property Electrical Borehole...

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1st Workshop on Environmental Science, Society, and Technology, WESTECH 2018

作者： Agustin, Friska Abdullah, Chalid Idham Palabiran, Merandy Sulastri, Asti Geology Engineering Study Program Faculty of Earth Sciences and Technology ITB Indonesia Mechanical Engineering Study Program Faculty of Mechanical and Aerospace Engineering ITB Indonesia Indonesia

Prospective area of Solok geothermal lies in step over transtensional between two segments, Suliti and Siulak, Sumatra faults. Geological structure in this prospect area shows structural pattern controlled by "oblique divergent strike-slip fault system" (releasing bend) as a proceed of embraced movement from Sumatra fault and establishes "dilation zone" between those two segments, forming negative flower structure in direction of NW-SE and N-S. The pattern of geological structure is predicted to control the availability of solok geothermal system which in this case related to presence of surface manifestation. The pattern of geological structure is predicted to control the availability of solok geothermal system which in this case related to presence of surface manifestation. Surface manifestation indicates good permeability zone that can be used as flow path of geothermal fluid from reservoir. © Published under licence by IOP Publishing Ltd.

关键词： Geothermal fields

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Organizational Culture's Significance in Technology and Innovation Management

Organizational Culture's Significance in Technology and Inno...

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Trends in Quantum Computing and Emerging Business Technologies (TQCEBT), International Conference on

作者： Somanchi Hari Krishna Ulfah Fajarini Arun Kant Painoli C. Visvesvaran K. N. Jahnavi Melanie Lourens Department of Business Management Vignana Bharathi Institute of Technology India Faculty of Education Social Science Study Program Syarif Hidayatullah State Islamic University Jakarta Indonesia School of Management Studies Baddi University of Emerging Sciences and Technology Baddi Himachal Pradesh India Sri Krishna College of Engineering and Technology Coimbatore India SIndhi Institute of Management Bangalore Faculty of Management Sciences Durban University of Technology South Africa

ISBN: (数字)9798350384277

ISBN: (纸本)9798350384284

Several studies have examined the connection between innovation, technology, and organizational culture in recent years. Management of technology and innovation is crucial to an organization's expansion and success. The development of an innovative organizational culture comes before technology and innovation management. This study's primary goal was to assess how organizational culture affects innovation in the Indian service sector. The study made use of a paradigm for understanding organisational culture created by Cameron and Quinn, which looks at culture as a collection of conflicting values from four angles. A descriptive survey research design was used in the investigation. Employees of service industries made up the study's population. More than twenty IT organizations participated in the survey, and 120 out of 180 respondents returned completed questionnaires. This indicated a response rate of 66%.The collected data was analyzed using inferential data analysis techniques and descriptive statistics. Tables and figures were created after analysis with IBM SPSS software. The results demonstrated that the strongest associations with innovation and technology were found in companies with flexible, collaborative, and employee-friendly cultures. Lastly, the study suggests areas for additional research, such as employing a new organizational culture model for the study or qualitative techniques for data collecting and analysis to reveal deeper cultural features.

关键词： Surveys Industries Technological innovation Technology management Quantum computing Sociology Innovation management

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Ecotoxicity of micro- and nanoplastics on aquatic algae: Facts, challenges, and future opportunities

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Journal of Environmental Management 2023年 346卷 118982页

作者： Nguyen, Minh-Ky Lin, Chitsan Nguyen, Hoang-Lam Le, Van-Giang Haddout, S. Um, Myoung-Jin Chang, Soon W. Nguyen, D. Duc Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Faculty of Environment and Natural Resources Nong Lam University Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Civil Engineering McGill University Montreal Canada Central Institute for Natural Resources and Environmental Studies Vietnam National University Hanoi111000 Viet Nam Department of Physics Ibn Tofail University Morocco Department of Civil & Energy System Engineering Kyonggi University 442-760 Korea Republic of Faculty of Environmental and Food Engineering Nguyen Tat Thanh University 300A Nguyen Tat Thanh District 4 HCM City755414 Viet Nam

The production of plastic has exponentially increased in recent years, leading to the release of millions of tons of plastic waste into the environment annually. This waste can break down into smaller micro- and nanoplastics (MNPs) that are toxic and reactive to life forms, including humans. MNPs are particularly concerning for marine biologists and environmental scientists due to their toxic impacts on aquatic organisms, including algae, which are the foundation of the food chain. The review provides a comprehensive overview of the (eco)toxicity assessment of MNPs on aquatic algal communities, highlighting the novel insights gained into the ecotoxicity of various MNPs on algae and the associated health risks for aquatic ecosystems, food chains, and humans. This article also discusses current challenges and future research opportunities to address these challenges, making it a valuable contribution to the field of environmental science. Overall, this work is one of the first efforts to comprehensively assess the effects of MNPs on aquatic algae, emphasizing the significant risks that MNPs pose to essential ecosystems and human health. © 2023 Elsevier Ltd

关键词： Health risks

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Plastic waste fibrous clay consolidation with optimum water content

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AIP Conference Proceedings 2024年第1期2838卷

作者： Renaningsih Dwi Setiawan Maulina Junephin Natalie Nurul Hidayati Civil Engineering Study Program Universitas Muhammadiyah Surakarta Ahmad Yani Street No.157 Pabelan Kartasura Sukoharjo Jawa Tengah Indonesia

Clay soils are characterized by low bearing capacity and poor soil characteristics. Because the soil at the research location has high plasticity and shrinkage value, it must be managed carefully to fulfill the requirement. The research aims to determine the physical and mechanical properties of the soil before and after stabilization. The solution is to mix the soil with PET plastic waste at concentrations of 0%, 0.5%, 1%, 1.5%, and 2% of the weight of the soil. PET plastic is produced from white and thin plastic bottle waste that is twice chopped. The analysis revealed that increasing the plastic content decreases the water content, specific gravity, liquid limit, shrinkage limit, and plasticity index, while increasing the plastic limit value. The results of the soil mechanical properties showed that the maximum dry density increased, while the optimum water content decreased with the addition of plastic. The original soil consolidation obtained Cv of 0.000965 cm3/sec, Cc of 0.40612, and Sc of 0.015143 cm. With the addition of waste, the value of Cv increases, while the values of Cc and Sc decrease. According to the results above, the waste can be used to stabilize clay.

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