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Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA)

作者： Jian-Jia Huang Shih-Chieh Chang Cheng-Hsu Cheng Timothy Wan Yu-Cheng Pei Department of Physical Medicine and Rehabilitation Chang Gung Memorial Hospital Taiwan Master of Science Degree Program in Innovation for Smart Medicine Chang Gung University Taoyuan City Taiwan Department of Electrical Engineering Chang Gung University Taoyuan City Taiwan Walker Department of Mechanical Engineering The University of Texas at Austin Austin TX USA

This case series cohort study investigated gait characteristics based on sensor data obtained from personalized active powered lower limb exoskeletal robot-assisted gait training and assessed its putative therapeutic effects in patients with stroke. Preliminary findings suggest that the application of the exoskeletal robot did not improve gait symmetry under robot assistance and could facilitate inter-joint coordination within the hip-knee joint movement on the affected side. These findings suggest that robot-assisted gait training could improve gait by guiding motor learning.

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Relief Mapping Assessment using Two-Echelon Vehicle Routing Problem with Drone 6

Relief Mapping Assessment using Two-Echelon Vehicle Routing ...

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6th International Conference on Science and Technology, ICST 2020

作者： Perwira Redi, A.A.N. Liperda, Rahmad Inca Sopha, Bertha Maya Sri Asih, Anna Maria Sekaringtyas, Nandini Niramaya Astiana, Handina Boedhy Binus Graduate Program - Master of Industrial Engineering Bina Nusantara University Industrial Engineering Department Jakarta Indonesia Universitas Pertamina Department of Logistics Engineering Jakarta Indonesia Department of Mechanical and Industrial Engineering Yogyakarta Indonesia

ISBN: (纸本)9781728194721

This study considers the two-echelon vehicle routing problem using drones in the postdisaster situation. The problem takes into account using a collaboration between a drone with a ground vehicle to conduct an information gathering so-called mapping operation. Each ground vehicle is associated with a drone. The first echelon depicts the routes travelled from depot to stopover point and from a stopover point to another stopover point. The first echelon is travelled by a ground vehicle to extend the limitation of drone's range coverage to gather information. The second echelon is the assignment of the drone to the target point. A target point is an area being mapped or in this case that is affected by the disaster. The problem is modelled as an integer linear programming problem denoted as 2EVRP-MOD. It is assumed that drone can only be released from a stopover point. The mapping operation is associated with the amount of area being covered at each target area. The objective is to minimize the total mapping operation time. The entire mapping operation time is limited by the drone flying capacity limit. The model is tested on a real-case dataset in Bekasi, Indonesia. The computational results show that the model can effectively provide a solution for the 2EVRP-MOD. © 2020 IEEE.

关键词： Disasters

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Synergistic thermal and surface area properties of Al₂O₃–TiO₂/water hybrid nanofluids

Case Studies in Chemical and Environmental Engineering

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Case Studies in Chemical and Environmental engineering 2025年 11卷

作者： Djentoe, Yokanan Gustino Widiasto, Farrel Yoga Effendi, Hilbran Tama Dida Musabbikhah Hartati, Sri Santoso, Budi Kristiawan, Budi Wijayanta, Agung Tri Department of Mechanical Engineering Faculty of Engineering Universitas Sebelas Maret Jl. Ir. Sutami 36A Kentingan Surakarta 57126 Indonesia Master Program of Mechanical Engineering of Engineering Universitas Sebelas Maret Jl. Ir. Sutami 36A Kentingan Surakarta 57126 Indonesia Department of Mechanical Engineering Sekolah Tinggi Teknologi “Warga” Surakarta Jl. Raya Solo – Baki KM 2 Grogol Sukoharjo 57552 Indonesia Department of Agricultural Technology Universitas Veteran Bangun Nusantara Jl. Letnan Jenderal Sujono Humardani 1 Gadingan Jombor Bendosari Sukoharjo 57521 Indonesia Research Group of Sustainable Thermofluids Universitas Sebelas Maret Jl. Ir. Sutami 36A Kentingan Surakarta 57126 Indonesia

This work investigated experimentally on synergistic thermal and surface area properties of water-based Al2O3–TiO2 hybrid nanoparticles at a given volume ratio (50:50). Morphology and structure characterization were ... 详细信息

This work investigated experimentally on synergistic thermal and surface area properties of water-based Al₂O₃–TiO₂ hybrid nanoparticles at a given volume ratio (50:50). Morphology and structure characterization were performed using Transmission Electron Microscope (TEM) and Surface Area Analysis (SAA), while thermal properties were analyzed using a thermal properties analyzer. The aims of this study were to investigate morphology and structure characterization and to evaluate thermal behavior using Transient Line Heat Source (TLHS), including thermal conductivity, heat capacity, and diffusivity. TEM micrographs revealed that TiO₂ and Al₂O₃ nanoparticles were characterized by fractal-like arrangements and quasi-spherical morphology, respectively. The structural analysis of TiO₂ and Al₂O₃ nanoparticles reveals a mesoporous structure with curve isotherm type IV that has loop hysteresis characteristics. The thermal durability of the water-based Al₂O₃–TiO₂ hybrid nanoparticles is shown to have a strong relationship with the Moldoveanu model, confirming the trend of increasing thermal durability with a decrease in temperature as a result of increased nanoparticle mobility. According to this study, thermal behavior indicates that there are differences in temperature between 20 and 65 °C. Heat capacity increases significantly from 4 to 8 MJ/m²·K, with the fastest change occurring between 20 and 30 °C, whereas thermal diffusivity is bounded between 0 and 0.2 mm²/s. All of this highlights the potential applications in analysis and energy storage, highlighting the transfer characteristics of nanomaterials that are useful. The potential of hybrid nanofluids in long-term thermal management systems is demonstrated in this case study. © 2025 The Authors

关键词： Hybrid nanofluid Specific heat Thermal conductivity Thermal property

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Synergetic strategy: upgrading fuel properties of waste starch composite fuels by blending torrefied spent coffee grounds

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Journal of the Taiwan Institute of Chemical Engineers 2024年

作者： Chen, Wei-Hsin Chen, Guan-Hong Lee, Kuan-Ting Gunarathne, Duleeka Sandamali Hoang, Anh Tuan Department of Aeronautics and Astronautics National Cheng Kung University Tainan701 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung407 Taiwan Department of Mechanical Engineering National Chin-Yi University of Technology Taichung411 Taiwan International Master's Degree Program on Energy Engineering National Cheng Kung University Tainan701 Taiwan Department of Chemical and Materials Engineering Tunghai University Taichung407 Taiwan Department of Chemical and Process Engineering University of Moratuwa Moratuwa10400 Sri Lanka Faculty of Engineering Dong Nai Technology University Bien Hoa City Viet Nam Graduate School of Energy and Environment Korea University 145 Anam-ro Seongbuk-gu Seoul02841 Korea Republic of

Background: This study presents a composite solid fuel upgrading strategy by blending torrefied spent coffee grounds (TS) into waste starch (WS) at the weight ratios of 0 wt%, 5 wt%, 20 wt%, and 35 wt%. When the blending ratio of TS exceeds 35 wt%, TS-WS composite fuel fails to pelletize. Blending TS in WS contributes to the higher heating value (HHV) and carbon content. Methods: The Taguchi method is utilized to identify the optimal torrefaction conditions for HHV of TS. The highest HHV of TS at 300°C (300-TSCG) is 31.76 MJ∙kg−1, which is about 2.08 times that of WS. The carbon content, HHV, ignition temperature, and combustion reactivity of 35%TS-WS composite fuel are 51.15 wt%, 21.06 MJ∙kg−1, 262°C, and 4.6 wt%∙min-1∙°C−1, respectively. Attenuated total reflectance spectrometer, contact angle, hygroscopicity, mildew observation, storability, and water activity of TS-WS composite fuel are analyzed, and the storability of TS-WS composite fuel is discussed. Significant findings: Compared with 0%TS-WS, the HHV of 35% TS-WS increases 38%, while the carbon content increases by 34%. The mechanical strength of TS-WS decreases with the increase of TS blending amount. The strategy of blending TS and WS can significantly reduce the generation of WS and spent coffee grounds (SCGs) and upgrade the quality of composite solid fuel. Accordingly, TS-WS is a promising composite solid fuel that can approach sustainable production of biofuels without compromising commercial viability. © 2024 Taiwan Institute of Chemical Engineers

关键词： Spent fuels

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Evaluating AI-Induced Anxiety and Technical Blindness in Healthcare Professionals

Evaluating AI-Induced Anxiety and Technical Blindness in Hea...

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Creative Communication and Innovative Technology (ICCIT), IEEE

作者： Michael Christian Ratlan Pardede Kurnadi Gularso Suryo Wibowo Oktafalia Marisa Muzammil Sunarno Dept. of Management University of Bunda Mulia Jakarta Indonesia Master of Management University of Bunda Mulia Jakarta Indonesia Dept. of Medical Profession Study Program Krida Wacana Christian University Jakarta Indonesia Dept. of Business Management School Dept. of Business Undergraduate Program Bina Nusantara University Bekasi Indonesia Dept. of Mechanical Engineering University of Tama Jagakarsa Jakarta Indonesia

ISBN: (数字)9798350367492

ISBN: (纸本)9798350367508

The widespread implementation of artificial intelligence (AI) in various industries, including healthcare, provides significant benefits but raises concerns. Notably, apprehensions about AI generating issues, experiencing malfunctions, and hindering work extend to fears of replacing medical professional positions. This research aims to quantitatively assess the impact of anxiety forms, specifically social, technical blindness and AI configuration, on job replacement anxiety among medical doctors. A pre-test approach was employed to gather data from 38 doctors in Jakarta who regularly interact with AI in their daily work. The study used PLS-SEM structural modelling with SmartPLS 3.0 as the analysis tool. Findings indicate that both social and technical blindness and AI configuration significantly influence job replacement anxiety. Additionally, the study reveals that elements within the AI configuration interact with social-technical blindness, and the AI setup effectively mitigates its impact on job replacement anxiety. These anxieties notably affect medical professionals’ fears of being replaced in their current roles. Previous research shows that anxiety about AI among healthcare personnel is persistent. However, this worry can be reduced or eliminated through continuous awareness, education, and understanding of AI’s purpose and limitations. This study aims to provide medical practitioners with a comprehensive understanding of AI constraints and the aspects requiring direct doctor involvement.

关键词： Training Industries Ethics Anxiety disorders Psychology Medical services Blindness Personnel Artificial intelligence Guidelines

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Aloe vera and beeswax based coating to maintain shelf life of salak cv. Madu 3

Aloe vera and beeswax based coating to maintain shelf life o...

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3rd International Conference on Agricultural engineering for Sustainable Agriculture Production, AESAP 2019

作者： Sari, P.R.P. Darmawati, E. Ahmad, U. Postharvest Technology Master Program Graduate School Ipb University Bogor16680 Indonesia Departement of Mechanical Engineering and Bio-system Faculty of Agricultural Engineering and Technology Ipb University 16680 Indonesia

The coatings on fruits after harvested was applied to maintain the appearance and quality up to the consumer's hands. This study aimed to maintain color and reduce the level of decay of salak madu during storage. Salak madu was obtained from Madding Fresh, trader and supplier salak from Sleman, Yogyakarta. The salak was coated with Aloe vera gel (20% and 50%) and beeswax (3, 6, and 10%). All samples were stored at 25-28 °C. The parameters used to measure the effect of treatment are skin color, percentage of decay, and weight loss. Observations were carried out for 12 days. The results of this study were found that dyeing on a coating made from Aloe vera 50% was able to slow down weight loss and percentage of decay until the 6 days, while Aloe vera 30% was better at maintaining color changes during storage. Beeswax 3% coating can slow down discoloration and percentage of decay until 6 days of storage. Long-term storage (12 days) with beeswax 10% was better in maintaining changes in the quality of salak madu, while for short-term storage (6 days), beeswax 3% gives better results. © Published under licence by IOP Publishing Ltd.

关键词： Coatings

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Underwater visible light communication using phase-shift keying and rolling-shutter effect 9

Underwater visible light communication using phase-shift key...

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9th IEEE Global Conference on Consumer Electronics, GCCE 2020

作者： Hamagami, Ritsuki Ebihara, Tadashi Wakatsuki, Naoto Mizutani, Koichi University of Tsukuba Master's Program in Intelligent and Mechanical Interaction Systems Tsukuba Japan University of Tsukuba Faculty of Engineering Information and Systems Tsukuba Japan

ISBN: (纸本)9781728198026

We propose an underwater visible light communication (VLC) system for use in drones. The transmitter modulates a message using phase-shift keying (PSK) and emits the signal as LED fast-blinking light. The receiver captures this pattern with a CMOS image sensor using a rolling-shutter effect, and demodulates PSK. In existing VLC systems, rolling-shutter effect is used to transmit baseband signals;this system transmits a passband signal tolerant of low-frequency optical interference noise. System performance was evaluated in test-tank experiments. Findings suggested that the VLC system with PSK outperformed that using on-off keying when noise frequency did not exceed carrier frequency. © 2020 IEEE.

关键词： Phase shift keying

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Preprocessing Techniques for Enhancing Vision-Based Detection System for Tire Sidewall Extraction

Preprocessing Techniques for Enhancing Vision-Based Detectio...

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International Seminar on Research of Information Technology and Intelligent Systems (ISRITI)

作者： Jia Hao Loo Veronica Lestari Jauw Chin Seong Lim Khairul-Rijal Sarmin Nunung Nurul Qomariyah Ahmad Nurul Fajar Department of Mechanical Materials and Manufacturing Engineering University of Nottingham Malaysia Malaysia Continental Tyre Technology Centre Malaysia Petaling Jaya Malaysia Computer Science Department School of Computing and Creative Arts Bina Nusantara University Jakarta Indonesia Information System Management Department BINUS Graduate Program-Master Information Systems Bina Nusantara University Jakarta Indonesia

ISBN: (数字)9798331519643

ISBN: (纸本)9798331519650

This study aims to develop a system for extracting crucial information from tire sidewalls using Optical Character Recognition (OCR). Initially, images of tire were captured manually by smartphone cameras, including Redmi 9T, iPhone 11, and Galaxy S23 Ultra. The captured images are then transferred to a computer for storage. Subsequently, these images were cropped according to the boundaries identified by Hough Circle Transform (HCT). The cropped images were then further pre-processed. During the pre-processing phase, geometrical transformation and image sharpening techniques are applied to enhance the clarity and readability of the text images. The text is then extracted using Google Vision, with the extracted text categorized by size, DOT, brand and pattern. The results indicated that the effectiveness of image pre-processing was constrained by the accuracy of circle detection, which reached a maximum rate of 87.1%. This causes parts of the text to be cut out inaccurately, leading to a suboptimal extraction accuracy of 55.65%. It is also observed that the Redmi 9T camera produced inconsistent results compared to other devices. Specifically, the iPhone 11 and Samsung Galaxy S23 Ultra demonstrated superior extraction accuracies of 69.71% and 66.37%, respectively, whereas the Redmi 9T achieved a lower extraction accuracy of 37.76%.

关键词： Accuracy Optical character recognition Text categorization Lighting Transforms US Department of Transportation Cameras Tires Internet Data mining

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Feasibility testing of my Otoman electropneumatic gloves to improve lower arm strength of patient with stroke

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AIP Conference Proceedings 2024年第1期3155卷

作者： Erna Rochmawati Fitri Arofiati Bambang Riyanta Master of Nursing Postgraduate Program Universitas Muhammadyah Yogyakarta Yogyakarta Indonesia Department of Mechanical Engineering Universitas Muhammadiyah Yogyakarta Yogyakarta Indonesia

Patients with stroke generally experience disability in their extremities which require a long time of rehabilitation in hospitals. The advancement of technology creates many equipments to aid the rehabilitation. The current study aimed to develop mobility aid in the form of gloves equipped with an electropneumatic device to assist post stroke therapy doing rehabilitation independently. We developed My Otoman gloves, a pneumatically driven system and conducted initial testing of the gloves among patients with stroke. My Otoman glove consists of: (1) a glove, (2) a microcontroller system (3) electro pneumatic. Initial testing was conducted among eight patients with stroke. Our study shows that the device prototype is able to help patients with post stroke condition who had lower arm mobility impairment to open their hand. Muscle strength in lower arm was increased after the use of My Otoman glove. In term of easiness using the glove, the average score of patient’s rate was 3.63 of 5 point means that the glove was easy and comfort when being used. Results from the current study will be used to guide further improvements to the device which could be applied in the clinical practice.

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A New Damage Index for Structural Health Monitoring: A Comparison of Time and Frequency Domains

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Procedia Computer Science 2021年 179卷 930-935页

作者： Fergyanto E. Gunawan Tran Huu Nhan Muhammad Asrol Yasuhiro Kanto Insannul Kamil Sutikno Industrial Engineering Department BINUS Graduate Program - Master of Industrial Engineering Bina Nusantara University Jakarta Indonesia 11480 Department of Automotive Engineering Faculty of Transportation Engineering Ho Chi Minh City University of Technology Ho Chi Minh City Viet Nam Mechanical Systems Engineering College of Engineering Ibaraki University Ibaraki Japan Department of Industrial Engineering Department Faculty of Engineering Andalas University Padang Indonesia Department of Mechanical Engineering Department Faculty of Engineering Institut Teknologi Sepuluh Nopember Surabaya Indonesia

With the adoption of the damage tolerance design principle, the health monitoring system has become an integral part of the operation of engineering structures. For the system to work, a damage indicator that describes the structural integrity level should be established and monitored. The damage indicator is usually derived from structural responses. Many quantities have been proposed for damage indicator including natural frequency, mode shape, curvature, strain energy, and t-, F-, and z-statistics. In this paper, we propose a new damage indicator in the time and frequency domains derived from the Euler-Bernoulli beam theory. We evaluate the method by using data obtained from a numerical simulation of a cracked beam. The beam deformation is nonlinear due to the contact between the crack faces during vibration. The proposed damage index is estimated in the domains for various observation points on the beam. Besides, the existence of the crack is also predicted by the widely used traditional method based on the change of the natural frequency and mode shape. A comparison is made between the present method and the existing ones. We conclude the present proposal is more sensitive to detect the crack.

关键词： Euler-Bernoulli Beam Structural Health Monitoring Damage Indicator Natural Frequency Finite Element Method

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