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5th IEEE International Conference on Technology, Informatics, Management, engineering and Environment, TIME-E 2024

作者： Lambang Gh, R. Lullus Imaduddin, Fitrian Santoso, Budi Ubaidillah Universitas Sebelas Maret Student of Mechanical Engineering Doctoral Program Faculty of Engineering Surakarta Indonesia Universitas Sebelas Maret Faculty of Engineering Staff of Mechanical Engineering Department Surakarta Indonesia

ISBN: (纸本)9798350364743

This research discusses the application of the hyperbolic tangent model for an outer bypass MR damper with a meandering valve, which was developed by one of the authors. The hyperbolic tangent model consists of six parameters. In this study, parameter reduction was carried out using local and global sensitivity analysis, and a parameter identification strategy based on Particle Swarm Optimization (PSO) was employed. The objective function is the relative error between the model's force and the force obtained from experiments with an outer bypass MR damper prototype featuring a meandering valve. The sensitivity analysis identifies an optimal hyperbolic tangent model with two sensitive parameters, while the remaining parameters are determined to be constant. The results show an improvement in accuracy, with the optimal hyperbolic tangent model reducing the error from 8.06 % to 7.1 %. This indicates that the optimal hyperbolic tangent model can be obtained by applying the sensitivity analysis method developed in this research. © 2024 IEEE.

关键词： Sensitivity analysis

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Designed harmonic step filter automatic control system to improve power quality and electric efficiency

Designed harmonic step filter automatic control system to im...

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2024 International Conference on Power Electronics and Energy System, ICPEES 2024

作者： Pasaribu, Faisal Irsan Sara, Ira Devi Tarmizi, Tarmizi Nasaruddin, Nasaruddin Doctoral Program School of Engineering Universitas Syiah Kuala Aceh23111 Indonesia Department Electrical and Computer Engineering Universitas Syiah Kuala Aceh23111 Indonesia

Good power quality and high-power efficiency are important aspects of power system management. Harmonic, as an unwanted frequency component in electrical signals, can interfere with power quality and reduce electrical efficiency. A passive harmonic filter is a device used to reduce or filter harmonics in electrical power systems. This research proposes technology Internet of Things with an automatic control system that moves the step filter to solve the harmonic problem, with the aim of improving the quality of power and electrical efficiency. The step filter functions to identify and isolate the harmonic, thus enabling appropriate controls to suppress the impact of the harmonic. The proposed system uses sophisticated control algorithms using sensors that can read current, voltage, frequency, and power factor to adjust the step filter parameters dynamically, following changes in load conditions and harmonizing. Simulation of the control network using the proteus software is subsequently undertaken in further research to design the control device. Using an automatic control set in the control simulation results reduced the need for manual intervention and let the system adjust the step filter automatically in response to changing network conditions. This showed that this method worked to lower harmonic distortion, increases the power factor through the filter used, and make the system more energy efficient overall. The study emphasizes the importance of applying sophisticated control strategies to manage harmonics efficiently, which ultimately paves the way to a cleaner and more reliable power grid. © Published under licence by IOP Publishing Ltd.

关键词： Power quality

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The profile of pempek as a determining factor of quality, originality and ethnicity

The profile of pempek as a determining factor of quality, or...

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International Conference on Science and Technology Applications 2019, ICoSTA 2019

作者： Supriadi, A. Saputra, D. Priyanto, G. Baehaki, A. Pambayun, R. Doctoral Stud. at the Faculty of Agriculture Universitas Sriwijaya Indonesia Agricultural Engineering Study Program Faculty of Agriculture Agricultural Product Technology Study Program Faculty of Agriculture Fishery Product Technology Study Program Faculty of Agriculture Universitas Sriwijaya Palembang30139 Indonesia

Pempek is a traditional ethnic food originated from Palembang, South Sumatra, Indonesia. Currently, there is not exist any profiles which could be used as a determining factor for quality, originality, and ethnicity of pempek. The objective of this research was to obtain the chemical profile of pempek as a determining factor of quality, originality and ethnicity. The samples were collected from the ten famous branded vendors in Palembang. The fish used in making pempek of the samples are snake head fish, Spanish mackerel, and the mix of snake head and Spanish mackerel. The type of pempek used in this experiment was steamed cook pempek lenjer (cylindrical) type. The analysis was performed at a KAN accredited laboratory. It was found that the energy content of pempek used in this experiment was in the range of 125 to 160 kkal/100 g sample and all the pempek used had a 0% of fat. All pempek used had 17 types of amino acid, and all of them had an essential amino acid. The significant finding was that the concentration of glutamic acid was 200% of the concentration of common concentration which indicated that all the vendors used artificial mono-sodium glutamate to improve the taste of pempek. It was concluded that the chemical profile found on this research could be used as database for creating a standard of identity of pempek. © Published under licence by IOP Publishing Ltd.

关键词： Fish

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Implementation of LEACH Protocol for Cluster Head Selection in D2D Cooperative Communication Systems

Implementation of LEACH Protocol for Cluster Head Selection ...

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2021 International Conference on Computer System, Information Technology, and Electrical engineering, COSITE 2021

作者： Raziah, Isyatur Yunida, Yunida Muharar, Rusdha Away, Yuwaldi Nasaruddin, Nasaruddin Universitas Syiah Kuala Doctoral Program School of Engineering Banda Aceh Indonesia Universitas Syiah Kuala Department of Electrical and Computer Engineering Banda Aceh Indonesia

ISBN: (纸本)9781665425094

Device-to-device communication (D2D) is a promising technology for future mobile networks that allow users to communicate directly without using the cellular system's infrastructure. However, since the battery power of each mobile device is limited, it is necessary to extend the network life by reducing its energy consumption. Clustering-based protocols could reduce the energy consumption by balancing all nodes into cluster heads (CH). This paper implements the recent hierarchical routing based on the Low Energy Adaptive Hierarchical Clustering (LEACH) protocol for a CH selection to increase device lifetime in cooperative D2D communication systems. First, the CH is selected based on each device's distance and the residual energy. Then, the LEACH protocol is implemented to choose CH in the D2D cooperative communication system to reduce energy consumption and increase the network life and aims to increase the reliability of the cooperative D2D communication system. Moreover, the proposed system model is provided to analyze cluster formation and energy consumption using computer simulation. The simulation results show that implementing the LEACH protocol can increase network life by knowing the number of dead devices and reducing energy consumption in cooperative D2D communication systems. © 2021 IEEE.

关键词： Energy utilization

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Implementation of Transit Oriented Development in Handling Congestion Effect on Urban Sprawl Phenomenon and Traffic Growth in Banda Aceh 3

Implementation of Transit Oriented Development in Handling C...

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3rd Annual Applied Science and engineering Conference, AASEC 2018

作者： Fadhly, N. Matondang, R. Department of Civil Engineering Engineering Faculty Syiah Kuala University Darussalam Banda Aceh Indonesia Doctoral Program in Regional Planning University of North Sumatra Indonesia

The occurrence of spatial and road network changes, increased traffic volume approaching road capacity, causing congestion due to urban sprawl phenomena as well as lack of public facilities and social facilities. From this background problem considered to be solved by a concept that is Transit Oriented Development (TOD), concept of transportation development in co-operation with spatial. The TOD concept can eliminate urban sprawl, which transforms urban sprawl into a compact city area. Pull model are obtained from the results of the analysis is, Oi = -37,126 + 58,723 X9 + 17,968X2, where road performance, land use, the coefficient indicates the number of additional trip generation. Trips pull obtained by model Dd = -20,351 + 30,903X2 where only one significant variable causing attraction of land use that is dominant. With concept of TOD, the model obtained is Oi = 32.180 + 0.002X7-7.017X3 where travel and distance travel costs indicate the number of additional trips generation, the generation will decrease over the base year. Objects obtained with the model Dd = 48.474-0.671X11 + 0, 003X7-9,299X3, meaning travel attraction in the absence of population density, travel expenses, and travel distance, then travel appeal that occurs on 48 journeys influenced by variable population density and distance travel will decrease, it can be interpreted this independent variables can influence the drag on the concept of Banda Aceh City and TOD can be applied in the city of Banda Aceh. © Published under licence by IOP Publishing Ltd.

关键词： Land use

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Comparison of Feature Selection Methods on Medical Record Data

Comparison of Feature Selection Methods on Medical Record Da...

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2023 International Conference on Modeling and E-Information Research, Artificial Learning and Digital Applications, ICMERALDA 2023

作者： Astuti, Lastri Widya Ermatita Rini, Dian Palupi Informatic Engineering Doctoral Program Sriwijaya University Palembang Indonesia Sriwijaya University Information System Palembang Indonesia Sriwijaya University Informatic Engineering Palembang Indonesia

ISBN: (纸本)9798350369359

Medical record data are an essential part of medicine, but the effective use of data has become difficult due to the rapid increase in data. Determining the selected features allows researchers to extract the information from medical data. Feature selection in classification provides the advantage of reduced time and storage. In addition, feature selection methods can improve performance by removing redundant or irrelevant data based on their weights. The benefits of feature selection are that it speeds up the training time, simplifies the model, makes interpretation easier, and improves generalization by reducing overfitting. Feature selection in this research uses two methods: Binary Whale Optimization (BWOA), Particle Swarm Optimization, and Hybrid with Gray Wolf Optimization (PSOGWO). Two feature selection methods were compared to determine the most optimal method for the classification process. A comparison of the two feature selection methods shows that the classification process with many attributes produces an optimal classification process, where the number of representative variables in the breast cancer dataset in the BWOA method has five features, and the PSOGWO method has 11 attributes. Meanwhile, the highest accuracy results in breast cancer classification using the BWOA average of 95.90% and PSOGWO Method average of 97.64% © 2023 IEEE.

关键词： Feature Selection

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Research on matching accuracy of underwater terrain matching algorithm based on unscented kalman filter 2019

Research on matching accuracy of underwater terrain matching...

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4th International Conference on Mathematics and Artificial Intelligence, ICMAI 2019

作者： Lu, Xiong Jian, Shen Xiaowen, Bi Department of Radar System OrdnanceNCO. Academy Army engineering university Wuhan China Post-doctoral program on control science and engineering Naval University of Engineering Wuhan China

ISBN: (纸本)9781450362580

UT transform is the core step of unscented kalman filter (UKF) algorithm. The Sigma sampling type of UT transform has great influence on the computational complexity, state estimation accuracy and computational efficiency of UKF-based terrain matching algorithm. In order to obtain the high precision terrain matching method which is suitable for engineering application, the Comparative analysis of three kinds of UKF-based terrain matching algorithms was carried out in this paper. Firstly, the UKF-based underwater terrain matching model was given. Secondly, the principle and the performance characteristics of scaled sampling method, Cubature sampling method, Gauss- Hermite sampling methods were analyzed. The filtering precision factors of symmetric unscented Kalman filter(SUKF), Cubature unscented Kalman filter(CKF), Gauss-Hermite Kalman Filter(GHKF) was studied from the algorithm principle, Thirdly, The computer simulation was performed using univariate nonstationary growth model(UNGM) to test the previous analysis conclusions. Finally underwater terrain matching simulation model was established, and the comparative analysis of matching acuraccy was carried out based on SITAN, SUKF, CKF and GHKF, the matching effect of underwater terrain matching algorithm is obtained. The simulation results show that the UKF algorithm based on symmetric sampling strategy has better filtering precision and less computational complexity which is suitable for the filtering core of underwater terrain matching algorithm. © 2019 Association for Computing Machinery.

关键词： Kalman filters

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Modeling the effect of population growth on stream nutrient concentration in turkey creek watershed using the WARMF model

Modeling the effect of population growth on stream nutrient ...

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11th National Symposium on Individual and Small Community Sewage Systems

作者： Geza, M. McCray, John E. Post Doctoral Researcher Environmental Science and Engineering Division Colorado School of Mines Department of Hydrologic Science and Engineering Program Environmental Science and Engineering Division Colorado School of Mines

Population growth and water quality in the foothills of Jefferson County are of concern to County's Board of County Commissioners and the Planning and Zoning Department. The Department desires to meet the needs of residents for adequate supplies of good quality water. The Turkey Creek watershed is representative of the foothills portions of Jefferson County. In 2001 population in the Turkey Creek watershed is estimated at 11,064 residents with projected population growth, using a 2-percent per year rate, at 13,186 residents in 2010, and 15,313 residents in 2020. Wtershed based non-point source (NPS) studies have usually ignored the impact of on-site septic systems (OWS) on the quality of surface water. However, OWS can be a substantial source of nutrients to surface waters. Point discharges from Wastewater Treatment Plants (WWTPs) can also contribute to stream pollution from nutrients if treatment efficiency at the WWTP is low. Several models can handle point source discharges from WWTPs. Evaluating nutrient loading from septic systems to streams is a challenging task because most NPS models are not specifically developed to track the fate and transport of nutrients from on-site systems. The Watershed Analysis Risk Management Framework (WARMF) model is adapted to simulate on-site septic systems loading. The 122.2 square-kilometer Turkey Creek watershed is located in Jefferson County, southwest of Denver, Colorado. The topography is mostly steep with elevations ranging from about 1800 m to 3200 m. WARMF model hydrologic calibration was performed using data from the gage station located at Turkey Creek at mouth of canyon near Morrison. Water-quality data collected during flow calibration period was used to guide water quality calibration. The base case scenario is established at year 2001. The scenarios in this study are population at 1990 and projected population at year 2010. The scenario runs will also provide the contributions of different water treatment options

关键词： Nutrients

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Identification of spatial potential flood-prone area using topographic wetness index under the digital elevation model of Kr. Keureuto watershed, North Aceh. 5

Identification of spatial potential flood-prone area using t...

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5th Aceh International Symposium on Civil engineering 2024, AISCE 2024

作者： Rizalihadi, Maimun Meilianda, Ella Yulianur, Alfiansyah Away, Yuwaldi Doctoral Program Post Graduate Program Syiah Kuala University Banda Aceh Indonesia Civil Engineering Department Syiah Kuala University Banda Aceh Indonesia Electro and Computer Engineering Department Syiah Kuala University Banda Aceh Indonesia

Floods are the most frequent disaster events in Lhoksukon, resulting in significant losses and community and environmental damage. Floods are generated by several factors, consisting of hydrometeorological, topographical, geological, soil, and human activities. Topography is a key controlling factor in flood initiation. Topographic analysis for detecting flood susceptibility, especially flood inundation, can be conducted using the TWI. The research aims to identify the potential spatial distribution of flood-prone areas based on TWI and assess the model accuracy using the ROC-AUC method. A case study was conducted in the Kr. Keureuto watershed. of North Aceh. TWI analysis is based on the topography of an area denoted by extracting DEM using GIS to create slope, flow direction, and flow accumulation. Higher TWI values are associated with higher flood susceptibility. The results show that the value of TWI is approximately 1.571-27.147, showing that more than 20% of area are potentially flood inundations with high and very hight rating of flood susceptibility. Furthermore, based on the analysis using field observation flood is obtained the AUC value of 71,60%. It can be concluded that the spatial model of flood-prone using TWI is good and effective for determining flood prone region in the Kr. Keureuto River basin © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Watersheds

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Influence of Project and Affected Local Community Interests Level on Social Conflicts in Indonesian Infrastructure Projects

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International Journal of engineering, Transactions A: Basics 2022年第7期35卷 1217-1226页

作者： Sanggoro, H.B. Alisjahbana, S.W. Mohamad, D. Civil Engineering Doctoral Program University of Tarumanagara Jakarta Indonesia

Poor economic growth due to Covid-19 pandemic in the last two years has resulted in a decline in indicators of public welfare. The construction industry sector also experienced a severe decline in productivity;thus, adjustments had to be made to survive the crisis situation. In addition, environmental problems due to development activities also threaten the lives and incomes of people who depend on natural products. These conditions encourage the escalation of interests that affect infrastructure projects in Indonesia. This study aimed to predict the influence of project and affected local community's interests on infrastructure projects social conflicts. Data were obtained by questionnaire from 68 project managers as respondents and analyzed using PLS-SEM. The findings of this study are that the influence of affected community is more dominant than that of project interests on project social conflicts. This shows the important role of communities in the concept of sustainable development with environmental and social perspectives. The results of this study will be useful in drafting the concept of an integrated and standardized environmental and social safeguard framework. To achieve an appropriate framework, further research is needed to examine the framework concept as a moderation of the relationship between interests and project social conflicts. © 2022 Materials and Energy Research Center. All rights reserved.

关键词： Construction industry

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