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

作者： Jalil, Saifuddin Muhammad Husaini Munadi, Rizal Sara, Ira Devi Doctoral Program School of Engineering Post Graduate Program Universitas Syiah Kuala Banda Aceh23111 Indonesia Department of Electrical and Computer Engineering Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Department of Mechanical Engineering Universitas Syiah Kuala Darussalam Banda Aceh23111 Indonesia Department of Electrical Universitas Malikussaleh Lhokseumawe24351 Indonesia

ISBN: (纸本)9789811936289

Solar-powered dryers are still expensive and difficult to obtain for farmers with medium to low production capacity. For this reason, it is necessary to develop technology on a solar-powered dryer with a solar panel capacity of 200WP is equipped with a maximum power point tracker as an integrated solar collector with a photovoltaic system. The system in this solar-powered dryer consists of a solar panel tracker, a rotating aluminum cylinder net, a photovoltaic tracker, a battery bank, a microcontroller, and a DC/AC inverter. This system improves the performance of solar panels in the drying process of Moringa leaves. This design is expect to be the right system to ensure maximum results by providing solar radiation energy in the drying process of agricultural products. The aims goal to minimize problems in the drying of agricultural products experienced by farmers using an automatic dual-energy solar-powered dryer as a development innovation for the drying process. This study uses an experimental methodology and field data collection using a solar-powered dryer that has been analyzed and measured to obtain data comparisons. shows the maximum data of voltage and power response in positioning photovoltaic to produce the increased output power of photovoltaic array. Maximum application of powerpoint tracker on microcontroller based dual energy solar powered dryer on solar panels for drying moringa leaves produces the advantage of maximum energy absorption in solar panels and shortens the time in the drying process of moringa leaves. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Microcontrollers

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The Environmental Impact Study of Micro Hydro Power in Pekalongan Indonesia 2

The Environmental Impact Study of Micro Hydro Power in Pekal...

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2nd International Conference on Energy, Environmental and Information System, ICENIS 2017

作者： Suwarto Hadi, Sudharto P. Hermawan Doctoral Program of Environmental Science School of Postgraduate Studies Diponegoro University Semarang Indonesia Department of Environmental Science Diponegoro University Semarang Indonesia Faculty of Engineering Diponegoro University Semarang Indonesia

Curugmuncar II micro hydro power (MHP) located in Petungkriyono sub district is one of three MHPs installed in Pekalongan district. This study aims to analyze the MHP operation environmental impact. The study used qualitative method, with interviews, observations, and material testing. The data used are primary and secondary data. This research was conducted in Curugmuncar Village, Petungkriyono Subdistrict, Pekalongan Regency, Indonesia. MHP has power capacity of 100 KW with power usage of 50 KW. MHP used by 155 users with load capacity 2 A 220 volt AC. The community more used of lights as the houses and street lighting. The MHP operation had several environmental factors such as: Sociology, technically feasible, hydrology, physical and chemical water quality, ergonomics, economically feasible, irrigation, clean water supply, government policy, and others. The supporting factors sustainability of MHP were sociology, irrigation, ergonomics, clean water supply, physical and chemical water quality, hydrology, and government policy. The inhibiting factors of MHP operation were technically feasible, economically feasible, and government policy. The results showed that the MHP environment requires a professional management system to achieve the MHP sustainability. © 2018 The Authors, published by EDP Sciences.

关键词： Irrigation

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A Dynamic Model for Pauses in the Synthesized Speech of Mathematical Expressions in MathML 14

A Dynamic Model for Pauses in the Synthesized Speech of Math...

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14th International Conference on Education Technology and Computers, ICETC 2022

作者： Souza, Adriana Freitas, Diamantino Bahia Federal Institute of Education Science and Technology Porto Seguro Bahia Brazil Doctoral Program in Digital Media Faculty of Engineering Faculty of Engineering of University of Porto Porto Portugal Department of Electrical and Computer Engineering Faculty of Engineering of University of Porto Porto Portugal

ISBN: (纸本)9781450397766

Voice synthesizers still present several challenges in the speech of mathematical content, as spoken mathematics has quite peculiar rules. In the synthesized speech, pauses help blind and visually impaired students identify the limits of mathematical operators and subexpressions. However, most studies on pauses define them uniformly or use simple punctuation marks to force the synthesizer to introduce pauses in certain parts of the expression. Speech is a dynamic process and pauses in expressions also need to be dynamic to make the synthetic speech of expressions more natural, as this can help in memorizing this type of content. This work proposed a dynamic model of pauses for mathematical expressions. Collected math expressions spoken by teachers were used to create the model. These expressions were useful for identifying patterns and creating a linear regression model. Blind and visually impaired students evaluated the model. Some improvements were observed when we compared the synthesized mathematical expressions with the model and Audiomath, the parameter tool used in this study. © 2022 ACM.

关键词： Dynamic models

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Density Measurement of High-Tightness Woven Fabric using Variation of Field of View Stereo Photometry Method 8

Density Measurement of High-Tightness Woven Fabric using Var...

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8th International Conference on Instrumentation, Control, and Automation, ICA 2023

作者： Setiawan, Irwan Juliastuti, Endang Kurniadi, Deddy Institut Teknologi Bandung Engineering Physics Doctoral Program Faculty of Industrial Technology Bandung Indonesia Faculty of Industrial Technology Institut Teknologi Bandung Instrumentation and Control Research Group Bandung Indonesia

ISBN: (纸本)9798350301274

High-tightness woven fabric (HTWF) density measurements have been developed using image analysis. In this study, the measurement of HTWF density is based on the three-dimensional surface structure of the fabric using the stereo photometry method. The woven fabric image was recorded with two fields of view (FOV). In each FOV, the image was recorded six times with different light directions. The unbiased stereo photometry algorithm was used to reconstruct the six images, resulting in a three-dimensional surface structure. The Hough transform detects and corrects the reconstructed image's skew. The yarn position is obtained using the fabric surface structure profile. Finally, the weft and warp profile curves were smoothed using a locally weighted smoothing (LOESS) filter. The measurement error of woven fabric density at FOV 1 for twill weave patterns with errors in warp 2.88 to 5.83% and weft 1.69 to 4.93%, and satin weave patterns with errors in warp 1.15 to 2.93% and weft 0.96 to 3.22%. While the measurement error of woven fabric density at FOV 2 for twill weave patterns with errors in warp 0.25 to 1.31% and weft 0.28 to 1.82%, and satin weave patterns with errors in warp 0.04 to 1.01% and weft 0.04 to 0.82%. © 2023 IEEE.

关键词： Stereo image processing

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Mechanical Properties, Morphology and Thermal Degradation of PCL (Poly ϵ - Caprolactone) Biodegradable Polymer Blended Nanocomposites with Aceh Bentonite as Filler

Mechanical Properties, Morphology and Thermal Degradation of...

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International Conference on Science and Innovated engineering 2018, i-COSINE 2018

作者： Ridwan Wirjosentono, Basuki Tamrin Rihayat, Teuku Doctoral Program of Chemistry Faculty of Mathematics and Natural Science Universitas Sumatera Utara Indonesia Departement of Chemistry Universitas Sumatera Utara Indonesia Departement of Chemical Engineering Politeknik Negeri Lhokseumawe Indonesia

Polycaprolactone (PCL) is an important polymer due to its mechanical properties, miscibility with a large range of other polymers and biodegradability. Polycaprolactone (PCL) was chosen as the matrix because of its biodegradability characteristics. This paper reports on an investigation of the influence of the presence of bentonite. It was found that of bentonite significantly influenced the mass loss behavior of the nanocomposite because of physical interactions between the clay and the polymer chains and degradation volatiles. Melt drawing of the composite, however, had little influence on the degradation behavior of the investigated samples. Based on mechanical properties results, addition of bentonite significantly enhances the flexibility of PCL blends. TGA showed that the presence of bentonite improves thermal stability of blends. © Published under licence by IOP Publishing Ltd.

关键词： Bentonite

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The Concept of Sustainability in the Formation of Unplanned Settlement Spaces in Depok Lama, West Java 1

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AUA Academic Conference in conjunction with 5th International Conference on Strategic and Global Studies, AUA and ICSGS 2021

作者： Rakhmanita Purwanto, Edi Rukayah, R. Siti Rahman, Arief Doctoral Program in Architecture and Urban Sciences Diponegoro University Semarang Indonesia Department of Architecture Faculty of Engineering Diponegoro University Semarang Indonesia Department of Architecture Faculty of Civil Engineering and Planning Gunadarma University Depok City Indonesia

ISBN: (数字)9783030999797

ISBN: (纸本)9783030999780

As a village that later developed into an area that resembled a colonial city at that time, Depok Lama had a concept of residential space that was different from the colonial settlements that existed during the Dutch colonial period. In other colonial settlements, the concept of settlement was the result of a design from the Dutch government, in the Depok Lama settlement the concept of residential space was formed from the activities of citizens directed by a will. This method is used to find a detailed picture based on facts about the beginning of the formation of Depok lama settlement through collecting Depok Lama maps, Chastelein's will, and observing city artifacts. The results of this study note that the concept of space that was applied at the beginning of the formation of the Depok Lama settlement was an unplanned concept of sustainability, prioritizing easy access to various main facilities in the Depok Lama settlement, forming a comfortable environment for the residents of Depok Lama in building their lives and improving they socio-economic quality. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Sustainable development

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Normalized Traffic Features Using Graph Signal Processing for Traffic Flow Prediction 9

Normalized Traffic Features Using Graph Signal Processing fo...

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9th IEEE Information Technology International Seminar, ITIS 2023

作者： Putri, Adiyana Joelianto, Endra Doctoral Program of Engineering Physics Institut Teknologi Bandung Faculty of Industrial technology Bandung Indonesia Instrumentation and Control Research Group Institut Teknologi Bandung Faculty of Industrial Technology Bandung Indonesia

ISBN: (纸本)9798350306835

Traffic forecasting is essential for the intelligent transportation system and is applied to managing traffic networks. Recently, there has been a growing interest in incorporating spatial and temporal variables into the methodology of traffic forecasting. The primary emphasis of modern research lies in the complex architecture of graph neural networks. In contrast, preprocessing data for the input is also essential. Especially traffic data, such as traffic flows, have high nonlinearity and complex patterns. The traffic graph signal is attributes that are associated with the nodes. In this paper, the step of preprocessing data utilized graph signal processing (GSP) to filter noise from traffic signal data before the traffic flow data was applied for prediction tasks. The adjusted parameter for filtering noise was used. In this paper, the parameter was set from 0.1 to 10. The result shows that the increasing parameter filter of the graph data was smoothed filtered. Moreover, the smooth data is affected by the time horizons. For the increasing time horizon, we can use the large parameter and get the prediction error smaller than the shorter time horizon. © 2023 IEEE.

关键词： Forecasting

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Building Composite Performance Index for Broadband Internet Customer Experience 1

Building Composite Performance Index for Broadband Internet ...

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1st IEEE International Symposium on Consumer Technology, ISCT 2024

作者： Nurdianto Singgih, Moses Laksono Gunarta, I Ketut Doctoral Program in Technology Management Interdisciplinary School of Management and Technology Institut Teknologi Sepuluh Nopember Surabaya Indonesia Institut Teknologi Sepuluh Nopember Department of Industrial and Systems Engineering Surabaya Indonesia

ISBN: (纸本)9798350365191

The global trend in broadband internet services reveals an increased focus on reliability, customer service, and integrating new technologies like IoT, 5G, or FMC. Customer service is primarily determined by network quality and reliability, price, and the quality of customer support provided by ISPs. Meanwhile, existing network quality measurement methods often involve numerous parameters, ranging from download speed and server response time to video streaming quality, each providing a separate insight into aspects of user experience. Therefore, the importance of the composite index method is becoming increasingly relevant. This method allows the integration of these various parameters into a single, easily understandable integrated index, simplifying complex data analysis into a more concise and interpretable form. As a result of this approach, internet service providers can more effectively monitor and enhance the customer experience and the overall quality of their services for various purposes with a single composite parameter value, providing reassurance and confidence in their operations. © 2024 IEEE.

关键词： Sales

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Optimal Location to Use Solar Energy in an Urban Situation

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Computers, Materials & Continua 2023年第4期75卷 815-829页

作者： Ngakan Ketut Acwin Dwijendra Indrajit Patra N.Bharath Kumar Iskandar Muda Elsayed M.Tag El Din Faculty of Engineering Udayana UniversityBali80361Indonesia An Independent Researcher NIT DurgapurWest Bengal700027India Department of Electrical and Electronics Engineering Vignan’s Foundation for Science Technology and ResearchGuntur522001India Department of Doctoral Program Faculty Economic and BusinessUniversitas Sumatera UtaraMedan20222Indonesia Electrical Engineering Department Faculty of Engineering&TechnologyFuture University in EgyptNew Cairo11835Egypt

This study conducted in Lima, Peru, a combination of spatial decisionmaking system and machine learning was utilized to identify potentialsolar power plant construction sites within the city. Sundial measurementsof solar radiation, precipitation, temperature, and altitude were collectedfor the study. Gene Expression programming (GEP), which is based on theevolution of intelligent models, and Artificial Neural Networks (ANN) wereboth utilized in this investigation, and the results obtained from each werecompared. Eighty percent of the data was utilized during the training phase,while the remaining twenty percent was utilized during the testing phase. Onthe basis of the findings, it was determined that the GEP is the most suitablenetwork for predicting the location. The test state’s Nash-Sutcliffe efficiency(NSE) was 0.90, and its root-mean-square error (RMSE) was 0.04. Followingthe generation of the final map based on the results of the GEP model, itwas determined that 9.2% of the province’s study area is suitable for theconstruction of photovoltaic solar power plants, while 53.5% is acceptable and37.3% is unsuitable. The ANN model reveals that only 1.7% of the study areais suitable for the construction of photovoltaic solar power plants, while 66.8%is acceptable and 31.5% is unsuitable.

关键词： Solar energy renewable energy machine learning

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State of the Art: Fragility Function of Electrical Power System 6

State of the Art: Fragility Function of Electrical Power Sys...

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6th International Seminar on Research of Information Technology and Intelligent Systems, ISRITI 2023

作者： Sahnur Nasution, Elvy Syahrial, Syahrial Devi Sara, Ira Away, Yuwaldi Postgraduate School of Engineering Universitas Syiah Kuala Universitas Muhammadiyah Sumatera Utara Doctoral Program Banda Aceh23111 Indonesia Universitas Syiah Kuala Dept. Electrical and Computer Engineering Banda Aceh23111 Indonesia

ISBN: (纸本)9798350358346

Natural disasters, particularly earthquakes, can cause the electric power system to collapse, which can be brought on by one of the infrastructure breakdowns in the power system. Damaged power system can cause losses to electricity providers, electricity users, so it is necessary to understand the vulnerability of electric power system assets to earthquakes. The research fragility function presents the concept of fragility function in power system of the entire power system, showed fragility of power plant, transmission line, tower transmission, transformers, generator, and substation. Substation is more fragile than the others because substation consist of circuit breaker and disconnecting switch the most fragile asset. In addition, this paper also presents how to creating the fragility function and several solutions to increase the resilience of the electric power system to earthquakes. © 2023 IEEE.

关键词： Earthquakes

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