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A drone-based logistics network for blood supplies: a genetic algorithm based on greedy search

Soft Computing 2024年第23期28卷 13349-13369页

作者： Saleh, Haitham Sayad, Mohammed Almoghathawi, Yasser Alghazi, Anas Al-Shareef, Khaled Department of Industrial and Systems Engineering King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia Interdisciplinary Research Center for Smart Mobility and Logistics King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia Interdisciplinary Research Center for Intelligent Secure Systems King Fahd University of Petroleum and Minerals Dhahran Saudi Arabia

In many countries, the accessibility of blood and blood products remains a challenge due to the complex supply chain, short product lifetime, fluctuating demand at the hospital level, and timely access. To address this challenge, some countries have implemented the use of drones to deliver blood products to remote healthcare facilities, resulting in improved availability and delivery times. To further improve the efficiency of blood supply logistics, this study proposes a drone-based logistics network for the transportation of blood groups from blood banks to hospitals. The proposed methodology employs a genetic algorithm, in combination with Greedy Search, to establish an optimal drone-based logistics network for blood supplies. The algorithm allocates blood requests to launching and refueling stations and determines the most efficient routes for the drones, with the objective of minimizing total logistics costs, including the construction costs of launching and refueling stations and the delivery costs between different locations. Moreover, the algorithm utilizes natural selection processes, such as selection, reproduction, and mutation, to converge toward a near-optimal solution. The results indicate that the proposed algorithm outperforms the CPLEX solver in terms of computational time for solving the proposed integer linear programming problem. Furthermore, the proposed methodology provides a near-optimal solution with a small gap between the CPLEX optimal and algorithm solutions, demonstrating its efficacy and potential for improving the delivery of blood products in a cost-effective manner. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Integer programming

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Localization Algorithms for Drones in a Wireless Communication Environment with Presence of Data Missing 23

Localization Algorithms for Drones in a Wireless Communicati...

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23rd International Conference on Control, Automation and systems, ICCAS 2023

作者： Kim, Sin Shin, Sung Ko, Nak Yong You, Sung Hyun Chosun University Department of Electronic Engineering Gwangju61452 Korea Republic of Interdisciplinary Program in IT-Bio Convergence System Department of Electronic Engineering Korea Republic of

ISBN: (纸本)9788993215274

Drones are widely used in industries because drones perform tasks in various environments. Drones are highly utilized because drones are not affected by ground conditions. Estimating the position of the drone is important for the successful completion of the missions that are assigned to the drone. In wireless communication environments, data missing often occurs between the anchors serve as the transmitter and the drone-attached tag serves as the receiver. In this paper, we propose a localization algorithm that can accurately estimate the location of the drone in the case of data missing. The proposed algorithm can estimate the position of the drone using the residuals of the predicted measurements in the case of data missing. The proposed algorithm aimed to estimate the position of the drone in the case of data missing using distance information between the anchors and the drone-attached tag and verified the performance of the proposed algorithm through simulation. © 2023 ICROS.

关键词： Drones

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Design of a CNN1D for Control and Monitoring of Blood Pressure 1

Design of a CNN1D for Control and Monitoring of Blood Pressu...

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1st IEEE Colombian Caribbean Conference, C3 2023

作者： Barrios, Vanessa Susana Rodriguez Torrenegra, Fernando Miguel Mendez Molinares, Daladier Jabba Universidad Simón Bolívar Systems Engineering Program Barranquilla Colombia Universidad Del Norte Department of Systems Engineering Barranquilla Colombia

ISBN: (纸本)9798350341799

The ability to continuously monitor the parameters associated with the state of health of an individual results in a large volume of data, which presents both challenges and opportunities for data analysis. There are several studies of convolutional neural networks (CNN) used successfully in the implementation of tools for the monitoring and analysis of a large amount of medical data, accomplishing faster and more accurate data processing for the forecasting of health-related variables. This paper will address the design of a predictive model of ECG and PPG signals to estimate blood pressure (BP) with an one dimensional convolutional neural network (CNN1D) that optimizes performance to reduce the amount of processing on devices. © 2023 IEEE.

关键词： Electrocardiograms

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Navigation of Underwater Robots Compensating Attitude Error between Sensor Coordinate systems

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Journal of Institute of Control, Robotics and systems 2022年第6期28卷 566-574页

作者： Jeong, Da Bin Ko, Nak Yong Chung, Jun Hyuk Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Graduate School Chosun University Korea Republic of Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Chosun University Korea Republic of ROBORO Co. LTD. Korea Republic of

This paper presents a navigation method for underwater robots that compensates for misalignment between sensors. Because precise coordinate systems of sensors for navigation cannot be given, errors in the transformation of sensor measurements are inevitable. To decrease navigation error due to the misalignment, the proposed method estimates the misalignment and compensates for navigation error considering the misalignment. The proposed method is implemented by the extended Kalman filter and verified through simulation and experiments. The experiment demonstrates that the method improves navigation accuracy and the error covariance of the misalignment converges. © ICROS 2022.

关键词： Extended Kalman filters

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Brand Love Enhancement of Micro, Small, and Medium Enterprises in Indonesia: A Systematic Literature Review 1

Brand Love Enhancement of Micro, Small, and Medium Enterpris...

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1st IEEE International Symposium on Consumer Technology, ISCT 2024

作者： Christina, Christina Gunarta, I Ketut Syairudin, Bambang Institut Teknologi Sepuluh Nopember Department of Industrial and Systems Engineering Surabaya Indonesia Universitas Kristen Maranatha Bachelor Program in Industrial Engineering Bandung Indonesia

ISBN: (纸本)9798350365191

This preliminary paper presents a Systematic Literature Review (SLR) to explore how consumer brand love of Micro, Small, Medium Enterprises (MSME) in Indonesia could be enhanced through branding strategies. MSMEs play important role in current Indonesia economic growth, but unfortunately, they focus on the trading and forget about the branding. It also examines previous research to observe what should be highligted about brand love, how to identify the variables of the consumer voices and if the latent consumer voices has been identified. To collect the literature data, ScienceDirect and Google Scholar were used as databases. There is a contradictive thing about the masstige brand and MSME's brands about brand love, brand loyalty and purchase intention. Some recommendations strategies could be determined such as good collaboration between the government and MSMEs, and how to gather the latent consumer voice. For further research could be suggested to include interview that would be converted to text document. © 2024 IEEE.

关键词： branding consumer emotion latent consumer voice Latent Dirichlet Allocation strategies

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Simultaneous biomethane and hydrochar recovery from washed elephant dung:The effects of inoculum source,substrate to inoculum ratio,and hydrothermal temperature

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Carbon Resources Conversion 2025年第1期8卷 26-34页

作者： Chayanon Sawatdeenarunat Boonya Charnnok Rojapun Nirunsin Sumate Chaiprapat Chen-Yeon Chu Asian Development College for Community Economy and Technology Chiang Mai Rajabhat UniversityChiang Mai 50300Thailand Energy Technology Program Department of Interdisciplinary EngineeringFaculty of EngineeringPrince of Songkla UniversityHat Yai DistrictSongkhla Province 90110Thailand School of Renewable Energy Maejo UniversityChiang Mai 50290Thailand Department of Civil and Environment Engineering PSU Energy Systems Research Institute(PERIN)Faculty of EngineeringPrince of Songkla UniversitySongkla 90002Thailand Institute of Green Products Feng Chia UniversityTaichung 40724TaiwanChina

This research aims to develop the appropriate biorefinery process integrating anaerobic digestion(AD)and hydrothermal carbonization(HTC)to recover the highest energy from the pretreated elephant ***,the raw elephant dung was physically processed by washing with water to generate the liquid waste,i.e.,washing water(WW),and solid waste,i.e.,washed fiber(WF).The appropriate substrate-to-inoculum ratio(SIR)and the inoculum source of the AD of WW were determined and the HTC temperature of WF was also *** results indicated that the AD of WW with the SIR of 1:2 and anaerobically digested swine manure as the inoculum presented the highest methane and energy yields of 412.3±9.9 N mL/g VS added and 2,220.1±53.03 MJ/ton dry wt.,*** HTC of WF,the optimum condition was the hydrothermal temperature of 170℃ at the residence time of 60 *** highest hydrochar and energy yields were 76.8%±1.9%dry *** 12,067.0±452.1 MJ/ton dry wt.,***,this biorefinery process could simultaneously treat elephant campderived waste and produce clean energy.

关键词： Elephant dung Biorefinery Anaerobic digestion Hydrothermal carbonization Lignocellulosic biomass

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A Location Estimation Algorithm Combined with TDOA and TOA Considering Repeaters 14

A Location Estimation Algorithm Combined with TDOA and TOA C...

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14th International Conference on Ubiquitous and Future Networks, ICUFN 2023

作者： Jeon, Seul-Bi Park, Heui-Seon Jo, Tae-Ho Hwang, Suk-Seung Chosun University Interdisciplinary Program in IT-Bio Convergence System Department of Electronic Engineering Gwangju Korea Republic of

ISBN: (纸本)9798350335385

Location Detection Technology (LDT), which accurately estimates the location of a mobile station (MS), is one of core techniques for the modern communication system. Among various LDTs, Time of arrival (TOA) and Time Difference of Arrival (TDOA) are the most commonly employed method, which calculates the location of MS based on at least three signals from base stations (BSs). In the urban environment, many repeaters have been installed for overcoming the radio shadow area problem of a receiver, but they cause the serious errors of the location estimation when we utilize signals passed through repeaters. In order to enhance this problem, in this paper, we introduce the combined location estimation approach with TDOA and TOA considering the repeater, based on signals from two repeaters and one BS. © 2023 IEEE.

关键词： Time difference of arrival

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Integral Sliding Mode Controller Design for Trajectory Following of a Six Degrees of Freedom Underwater Vehicle 23

Integral Sliding Mode Controller Design for Trajectory Follo...

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23rd International Conference on Control, Automation and systems, ICCAS 2023

作者： Derbew, Tegen Eyasu Ko, Nak Yong Chosun University IT-Bio Convergence Interdisciplinary Program Department of Electronic Engineering Gwangju64461 Korea Republic of

ISBN: (纸本)9788993215274

This paper presents a robust integral sliding mode controller for trajectory following of a six degrees of freedom underwater vehicle. Sliding mode controller is robust to bounded external disturbances caused by ocean currents, parametric uncertainties, and inevitable modeling errors;but, it is prone to chattering phenomenon. Thus, to address this problem, we proposed an integral sliding mode controller. The controller was designed, and its stability was checked using a Lyapunov approach. The proposed controller was implemented using MATLAB/Simulink® software. A simulation results were presented, and also, its performance was compared with the conventional sliding mode controller. The proposed controller has been observed to effectively drive the vehicle along the desired trajectory, while also reducing the chattering effect when compared to the conventional sliding mode controller. © 2023 ICROS.

关键词： Controllers

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Integrated System of Solid Oxide Fuel Cell and Ethanol Partial Oxidation: Process Simulation and Heat Exchanger Network 6th

Integrated System of Solid Oxide Fuel Cell and Ethanol Parti...

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6th International on Clean Energy and Electrical systems, CEES 2024

作者： Saebea, Dang Thanomjit, Chollaphan Arpornwichanop, Amornchai Patcharavorachot, Yaneeporn Interdisciplinary Centre for Decarbonisation & Green Energy Department of Chemical Engineering Faculty of Engineering Burapha University Chonburi20131 Thailand Center of Excellence in Process and Energy Systems Engineering Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand Department of Chemical Engineering School of Engineering King Mongkut’s Institute of Technology Ladkrabang Bangkok10520 Thailand

ISBN: (纸本)9789819757749

A solid oxide fuel cell (SOFC) fueled by reformate obtained from an ethanol partial oxidation (POX) was investigated regarding electrical and the thermal performances. Performance analysis was performed through Aspen Plus simulator. Gas compositions obtained from POX and SOFC were computed through the Gibbs free energy minimization method. Three voltage losses that include activation, ohmic and concentration losses was considered in an electrochemical model. Effects of operating parameters in both POX and SOFC on performance of SOFC-POX system were examined. From the simulation results, it was found that the suitable condition of POX was at the reformer temperature of 700 ℃ and oxygen to ethanol molar ratio of 0.1. While, the operating temperature of SOFC should be 900 ℃. Under these operating conditions, the maximum electrical and thermal efficiencies of 67.24% and 25.77%, respectively, can be achieved. Finally, the heat integration of the SOFC-POX system was considered using pinch analysis. The minimum cold utility is 88.1 kW while the hot utility is no need for this system. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Free energy

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0906 | Experimental Investigation of Increased Bearing Capacity When Imparting Vibration to Loose Ground in Low Atmospheric Pressure 21

0906 | Experimental Investigation of Increased Bearing Capac...

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21st International and 12th Asia-Pacific Regional Conference of the International Society for Terrain-Vehicle systems, ISTVS 2024

作者： Watanabe, Tomohiro Iizuka, Kojiro Department of Engineering Mechanical Engineering Program Niigata University Niigata Prefecture Niigata City Japan Department of Science and Engineering Machinery and Control Systems Shibaura Institute of Technology Saitama Prefecture Saitama City Japan

ISBN: (纸本)9781942112570

Recently, legged robots have attracted considerable attention as highly mobile rovers for planetary exploration. However, the surfaces of celestial bodies such as Mars and the Moon are primarily loose, causing slippage due to surface deformation from the rover's leg movements. To mitigate this, a walking method aimed at preventing slippage was proposed. In this walking method, the bearing capacity is increased by imparting vibration from the rover's leg to the loose soil on the ground. This walking method improved the mobility performance of the legged rover. It is crucial to investigate the increase in bearing capacity by imparting vibration in a realistic space environment to validate the effectiveness of the proposed method. This study examines the change in bearing capacity due to vibration under low atmospheric pressure, a condition found on Mars and the Moon. This condition affects the characteristics of ground sand due to decreased air resistance. Our findings provide valuable insights into using vibration in planetary exploration to enhance the performance of legged rovers. The experimental results indicate that the bearing capacity under low atmospheric pressure is nearly identical to that under standard atmospheric pressure, suggesting that atmospheric pressure conditions have minimal impact on the bearing capacity when vibration is applied. © 2024 International Society for Terrain-Vehicle systems. All rights reserved.

关键词： Atmospheric pressure

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