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An evaluation model of sustainable efficiency for container terminals

Sustainable Development 2024年第1期32卷 1170-1187页

作者： Hsu, Wen-Kai K. Huang, Show-Hui S. Huynh, Nguyen Tan Huang, Kuan-Han Department of Shipping & Transportation Management National Kaohsiung University of Science and Technology Kaohsiung Taiwan Master program of Meeting Incentives Conferences Exhibitions and Trade Marketing Shu-Te University Kaohsiung Taiwan Faculty of Economics and Management Dong Nai Technology University Bien Hoa Viet Nam Marketing Division Evergreen Marine Corp. Taoyuan County Taiwan

The purpose of this paper is to evaluate the sustainable efficiency of container terminals (CTs). By the definition of United Nations Conference on Trade and Development (UNCTAD), business sustainable development includes three domains: Economics, Environment, and Society. Accordingly, based on the definition and the practical features of CT operations, this paper assesses sustainable efficiency for CTs from three perspectives: container throughput, CO₂ emissions, and occupational safety. In this paper, a modality movement and a fuzzy grey relational analysis (GRA) approach are first proposed to estimate CO₂ emissions and occupational safety index for CT operators, respectively. A hybrid slacks-based measure (SBM)-DEA model is then developed to assess the sustainable efficiency of CT operators. Finally, the CT operators in the Port of Kaohsiung are empirically investigated to validate the research model. Based on the results, theoretical and practical implications for the management of CT operators and port authorities are discussed. © 2023 ERP Environment and John Wiley & Sons Ltd.

关键词： container terminals fuzzy GRA modality movement SBM-DEA sustainable efficiency

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The hazard analysis of passenger-cargo ferries: a revised risk matrix model based on fuzzy best–worst method

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Environmental Science and Pollution Research 2024年第54期31卷 63070-63084页

作者： Hsu, Wen-Kai K. Huang, Show-Hui S. Le, Thu Ngo Ngoc Huynh, Nguyen Tan Department of Shipping & Transportation Management National Kaohsiung University of Science and Technology 142 Hai Jhuan Rd Nanzih District R.O.C. Kaohsiung County81157 Taiwan Master program of Meeting Incentives Conferences Exhibitions and Trade Marketing Shu-Te University 59 Hun Shan Rd Yen Chau District R.O.C. Kaohsiung County82445 Taiwan Institute of Postgraduate Studies HUTECH University Ho Chi Minh City Viet Nam Faculty of Economics-Management Dong Nai Technology University Bien Hoa City Viet Nam

Improving hazards in maritime transport is essential to maintain the reliability and sustainability of the industry, ensure safety and security, and support global trade and economic growth. This paper is aimed at analyzing the hazards of passenger-cargo ferries (PCFs). The novelty of this paper is fourfold: (1) developing a revised risk matrix (RRM) model with considering the adaptability-based resilience of organization to assess PCFs’ hazards, (2) identifying risk factors (RFs) in ferry navigation and developing adaptive strategies to mitigate hazards, (3) applying the fuzzy best–worst method (BWM) to determine the RFs’ weight, and (4) employing the leading Taiwanese passenger-cargo ferry operator (the Taiwan-ferries case) as an empirical study to verify the proposed model. The empirical result can provide pragmatic information for ferry operators to improve the safety of their ferry navigations. Additionally, the proposed RRM model can provide a methodological reference for related research in hazard management. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Risk assessment

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An Improved Vision Transformer Architecture-Based Computer Recognition Platform for Lilium Classification

An Improved Vision Transformer Architecture-Based Computer R...

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IEEE International Conference on Consumer Electronics (ICCE)

作者： Xiang-Rui Huang Huai-Jhan Ke Szu-Yu Kuo Liang-Bi Chen Department of Electrical Engineering Master Program in Electrical Engineering and Computer Science National Penghu University of Science and Technology Penghu Taiwan Department of Computer Science and Information Engineering National Penghu University of Science and Technology Penghu Taiwan Department of Shipping and Transportation Management National Kaohsiung University of Science and Technology Kaohsiung Taiwan

ISBN: (数字)9798331521165

ISBN: (纸本)9798331521172

Lilies are popular in the global flower market, but consumers often lack information about specific varieties. To address this issue, this paper proposes a computer recognition platform based on the Vision Transformer (ViT) architecture. The proposed platform uses an improved vision transformer (ViT) architecture to classify different types of lilies, allowing consumers to access information and names of various Lilium species. The experimental results show that the proposed lily classification model achieved a 96.4% accuracy rate in classifying six lily species.

关键词： Computer vision Electric potential Accuracy Computational modeling Computer architecture Computer applications Flowering plants Network architecture Transformers Consumer electronics

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An Improved Vision Transformer Architecture-Based Computer Recognition Platform for Lilium Classification

An Improved Vision Transformer Architecture-Based Computer R...

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2025 IEEE International Conference on Consumer Electronics, ICCE 2025

作者： Huang, Xiang-Rui Ke, Huai-Jhan Kuo, Szu-Yu Chen, Liang-Bi Master Program in Electrical Engineering and Computer Science Department of Electrical Engineering National Penghu University of Science and Technology Penghu Taiwan Department of Shipping and Transportation Management National Kaohsiung University of Science and Technology Kaohsiung Taiwan Department of Computer Science and Information Engineering National Penghu University of Science and Technology Penghu Taiwan

ISBN: (纸本)9798331521165

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Detecting Crack on a Beam Subjected to Impact Load

Detecting Crack on a Beam Subjected to Impact Load

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AUN/SEED-Net Joint Regional Conference in transportation, Energy, and Mechanical Manufacturing Engineering, RCTEMME 2021

作者： Gunawan, Fergyanto E. Huu Nhan, Tran Sutikno Kamil, Insannul Industrial Engineering Department BINUS Graduate Program Master of Industrial Engineering Bina Nusantara University Jakarta11480 Indonesia Department of Automotive Engineering Faculty of Transportation Engineering Ho Chi Minh City University of Technology Ho Chi Minh City Viet Nam Mechanical Engineering Department Faculty of Engineering Institut Teknologi Sepuluh Nopember Surabaya Indonesia Industrial Engineering Department Faculty of Engineering Andalas University Padang Indonesia

ISBN: (纸本)9789811919671

Crack often affects structural deformation nonlinearly, leading to difficulty detecting their existence using some Structural Health Monitoring methods. In this paper, we propose a damage index derived from the Euler-Bernoulli beam theory. Furthermore, we evaluate the method's ability to detect the crack when the specimen is subjected to an impact load. To assess the proposed damage index, we consider a beam specimen containing a lateral crack. The beam has a length of 300 mm and a square-shaped cross-sectional area of 20 mm × 20 mm. The beam is made of steel, is constrained at one end, and is subjected to an impact load at the other end. The beam lateral displacement at many observation points across the beam-free surface is recorded during the beam dynamics. The records are used to compute the proposed damage index. The results suggest that the index only detects the crack when the beam deformation is affected by the crack. When the crack face is suppressed to bear the compressive stress, the resulting deformation is not much different from that of the uncracked beam. In that condition, the proposed index is not able to indicate the existing crack. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Cracked beam Damage index Euler-Bernoulli beam Lateral deformation Structural health monitoring

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The comparison of road network performance before and after the implementation of one-way system using prediction model

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AIP Conference Proceedings 2024年第1期2838卷

作者： Alfia Magfirona Nurul Hidayati Ari Wibowo Sri Sunarjono Budi Yulianto Civil Engineering Study Program Engineering Faculty Universitas Muhammadiyah Surakarta Indonesia Civil Engineering Master Study Program Engineering Faculty Universitas Muhammadiyah Surakarta Indonesia Transportation Agency of Surakarta Indonesia Dinas Perhubungan Surakarta Indonesia

One-way traffic networks maybe force drivers to bypass blockages to reach their destinations, potentially increasing trip distances. However, it is beneficial for anticipating some traffic problems in most urban traffic conditions—only a few studies concerned the regression approach for predicting road network performance models. As a result, this research aims to use the regression method to forecast the performance model of the road network before and after one-way traffic system implementation. The derived model equations are compared to see which ones substantially impact the road network’s performance. This study relies on secondary data from performance assessments of 26 roads before and after the system during morning peak hours of 06:30–07:30 AM. The independent variables (X) are data from segment analysis used, i.e., Volume (X1), Speed (X2), and Volume (X4), whereas the dependent variable (Y) is Level of Service. By attempting the model prediction multivariate linear regression modeling before the system, Y = 5.647 – 4.376X1+0.009X2+0.0003X4 tend better than others. It provided a more significant impact on LOS than other models provided by R-value 0.951 is higher than the other models. The R-square value is 0.904, which means that 90.4% of LOS is influenced by DS, V, and Q factors. Further research is needed to conduct in the form of additional other factors that can affect LOS.

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Analysis of motor vehicle engine performance using biogas from sorghum

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AIP Conference Proceedings 2023年第1期2568卷

作者： Aris Budi Sulistyo I. Gusti Bagus Wijaya Kusuma 1Automotive Technology Program Bali Land Transportation Polytechnic 82161 Tabanan Bali Indonesia 2Master Program in Mechanical Engineering Udayana University 80361 Bukit Jimbaran Campus Badung Bali Indonesia

The production of sorghum seeds produces sorghum stalks as solid waste that has potential to be used as raw material for biogas production. The largest composition of biogas produced from fermentation is methane gas (CH4) and carbon dioxide gas (CO2). The main component contained in biogas is CH4 or methane gas which is suitable for fuel. In this case, the problems studied were how the performance of vehicle engines by utilizing biogas from sorghum raw materials. With the existing problems, it is expected that we can find out how the performance of vehicle engines is when using biogas. The advantage of biogas compared to fossil fuels is that it is environmentally friendly and renewable. This research was conducted to find out the performance of vehicles by varying its air fuel ratio (AFR) between biogas and air. Based on the results and analysis, it can be found that the maximum torque produced when using Biogas was 6.4 Nm with AFR 1: 4 at 4,500 rpm and the maximum torque produced when using gasoline was 7.8 Nm at 2nd gear 1,500 rpm but the use biogas can produce the same torque if AFR chance to 1:8 with the value of about 7.8 Nm at 2nd gear 1,500 rpm. The maximum power generated when using Biogas was 4.1 hp with AFR 1: 8 at 4,500 rpm and the maximum power generated when using gasoline is 5.5 hp at 3rd gear at 6,000 rpm. The minimum SFC produced when using biogas was 1.4 kg/kWh with AFR 1: 8 at 4,500 rpm and the minimum SFC produced when using gasoline was 0.03 kg/kWh in 3rd gear.

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Analysis of motor vehicle performance by using bioethanol from sorghum

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AIP Conference Proceedings 2023年第1期2568卷

作者： I. Putu Gede Krisna Yoga Yasa Arif Devi Dwipayana I. Gusti Bagus Wijaya Kusuma 1Automotive Technology Program Bali Land Transportation Polytechnic 82161 Tabanan Bali Indonesia 2Master Program in Mechanical Engineering Udayana University 80361 Bukit Jimbaran Campus Badung Bali Indonesia

In recent years, many countries increased their efforts to use biofuels as alternative fuels. One of the most widely used biofuels is bioethanol. Bioethanol is one of the bioenergy produced from plants, a renewable fuel and has a high economic value. Sweet sorghum is a type of plant that contains a lot of sugar and is very suitable for making bioethanol. This research was conducted by testing the torque and power of engine. However, it is necessary to test the extent ratio of fuel and bioethanol in order to be able to produce optimal performance on a motorcycle engine. The parameters employed in this study were torque and power produced by gasoline motors when using pure gasoline (RON 88) mixed with bioethanol and when using pure Pertamax (RON 95) fuel. From the results of research that has been done, it is known that the performance produced by pure gasoline (RON 88) mixed with bioethanol B10 where it contains 90% alcohol, produced a maximum torque of about 5.96 Nm at 6000 rpm and maximum power generated of about 5 horsepower at 6000 rpm. A mixture of bioethanol and premium was confirmed to increase the octane value of the fuel. It is expected that the octane value produced is equivalent to RON 95 so that it can reduce exhaust emissions and improve engine performance.

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Design of exhaust gas emission tester

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AIP Conference Proceedings 2023年第1期2568卷

作者： Aris Budi Sulistyo Ni Wayan Widi Ayu Ariani I. Gusti Bagus Wijaya Kusuma 1Automotive Technology Program Bali Land Transportation Polytechnic 82161 Tabanan Bali Indonesia 2Master Program in Mechanical Engineering Udayana University 80361 Bukit Jimbaran Campus Badung Bali Indonesia

The increasing number of air pollution in various big cities in Indonesia currently increases concern. The facts show that air pollutants such as Particulate Matter and 5 elements such as HC, CO, CO2, O2 and NOx exceeded the ambient air quality standard threshold. In countries that have strict vehicle exhaust emission standards, those 5 elements must be measured, but Indonesia only measured 4 elements of the exhaust gas, without NOx. Most of the existing smoke detector tools are very inefficient to be used because of their large shape. Therefore, an exhaust emission detector test instrument was made on vehicles, in order to determine the level of emission threshold value. This study used a circuit consisting of a microcontroller block, input/output block, programmer block and Sensor block. In the microcontroller block, there are three important parts, including the oscillator circuit, the reset circuit, and the voltage circuit. In this paper, the tool was designed to read the value of exhaust emissions on the vehicle and make a comparison with that in Poltrada Bali workshop emission test equipment. Results showed that this design tool detected in real time and could show the air quality from the detection results. The measurement of exhaust emissions can be done in a short time and obtain definite results. The gas sensor can be calibrated by providing the desired value through a serial programming interface to the computer.

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Structural health monitoring: Frequency domain analysis of beam with breathing crack 2

Structural health monitoring: Frequency domain analysis of b...

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2nd International Conference on Biospheric Harmony Advanced Research, ICOBAR 2020

作者： Gunawan, F.E. Kanto, Y. Kamil, I. Sutikno Tran, H.N. Industrial Engineering Department BINUS Graduate Program-Master of Industrial Engineering Bina Nusantara University Jakarta11480 Indonesia Mechanical Systems Engineering College of Engineering Ibaraki University Ibaraki Japan Department of Industrial Faculty of Engineering Andalas University Padang Indonesia Department of Mechanical Engineering Department Faculty of Engineering Institut Teknologi Sepuluh Nopember Surabaya Indonesia Department of Automotive Engineering Faculty of Transportation Engineering Ho Chi Minh City University of Technology Ho Chi Minh City Viet Nam

Structural Health Monitoring (SHM) system can be considered as an Internet-of-Things (IoT) system implemented to engineering structure to provide real-time information on the integrity of the structure. In doing so, the system acquires data from various sensors distributed across the structure and infers damage sensitive quantities. In the research, we proposed a damage index derived from the governing dynamics of the structure in the frequency domain. The proposal was empirically verified by applying the index to analyze the case of a cracked cantilever beam subjected to a harmonic load. The value of the damage index was computed at some points surrounding the crack to understand the effect of the distance of the monitoring point to the crack to the index sensitivity. The results suggest that the index is sensitive to the crack particularly when the observation point is near the crack. © Published under licence by IOP Publishing Ltd.

关键词： Internet of things

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