检索结果-内蒙古大学图书馆

Conference of the North American Fuzzy Information Processing Society - NAFIPS

作者： M. Kawamura T. Onisawa Doctoral Program in Engineering University of Tsukuba Tsukuba Japan Institute of Engineering Mechanics & Systems University of Tsukuba Tsukuba Japan

This paper proposes a method to construct a subjective model for color impressions considering the reduction of human load. A model is constructed using the fuzzy rules expression in which the premise part shows color information and the consequent part shows emotional effects of color. Two kinds of questionnaire are carried out in order to obtain subjective information and a subjective model is constructed using them. The effectiveness of constructed subjective models is verified by the comparison with the objective model constructed by experts and with another subjective one.

关键词： Humans Psychology Visual perception Fuzzy sets Load modeling Information processing Systems engineering and theory Optical wavelength conversion

来源：评论

学校读者我要写书评

暂无评论

Development and Flow Optimization of "Gyroid" Based Additive Manufacturing Heat Exchanger: Both Computational and Experimental Analyses

SSRN

引用

SSRN 2024年

作者： Lai, Wei-Hsiang Samad, Abdul Department of Aeronautics and Astronautics NCKU Taiwan International Doctoral Degree Program on Energy Engineering NCKU Taiwan

There is a pressing demand for lightweight, space-saving, and high-performance heat exchangers (HEXs) in the aerospace industry. This study explores the Gyroid structure for efficient thermal energy management. Employing laser powder bed fusion, an optimized Gyroid HEX model is designed and comprehensively analyzed. Both computational and experimental analyses investigate thermal responses, considering various inlet flow rates and temperatures. Computational results are validated against experimental data, revealing favorable concurrence. The Gyroid HEX exhibits superior performance compared to a conventional plate HEX, demonstrating a 73.28% increase in heat transfer rate. The Gyroid HEX demonstrated significantly greater stiffness than a single unit cell under a 2 kN compressive load, exhibiting a deflection of only 0.0056 mm compared to 0.2 mm for the single cell. With a von Mises stress of 42.6 MPa and a factor of safety of 4.81 against the yield strength of stainless steel 316L (205 MPa), the Gyroid structure exhibits excellent potential for high-strength aerospace applications. Its strength can be further tailored by adjusting parameters such as cell size, wall thickness, periodic length, and isovalue. Additionally, compared to a Gyroid HEX made with 316L stainless steel, an aluminum Gyroid HEX demonstrates a 6.37% increase in heat transfer rate. This study provides valuable insights into Gyroid HEX fluid flow and thermal characteristics, offering potential applications in aerospace industry while acknowledging influencing factors on Gyroid structure strength. © 2024, The Authors. All rights reserved.

关键词： Computational fluid dynamics

来源：评论

学校读者我要写书评

暂无评论

Experimental and Simulation Analysis of Heat Transfer in Gyroid Heat Exchangers with Variable Flow Channels

SSRN

引用

SSRN 2024年

作者： Samad, Abdul Lai, Wei-Hsiang International Doctoral Degree Program on Energy Engineering NCKU Taiwan Department of Aeronautics and Astronautics NCKU Taiwan

Inspired by nature, Gyroid structures have emerged as an alternative for designing heat transfer equipment using additive manufacturing technology. Their high strength-to-weight ratio and high surface area-to-volume ratio make them ideal for modeling heat exchangers (HXs) for various thermal management applications. Multiple experiments were carried out for reproducibility and reliability, and the relative standard deviation of the average heat transfer rate and overall heat transfer coefficient were calculated, averaging 4.2% and 5.39%, respectively. Uncertainty analysis revealed good agreement between the simulation and experimental data, affirming the reliability of the findings. The HX with an uneven-flow channel exhibited a higher overall heat transfer coefficient (1112.85 W/m2K) compared to the even-flow channel HX (1095.81 W/m2K) under identical boundary conditions. Additionally, a comparison of materials indicated that aluminum provided superior heat transfer performance due to its higher thermal conductivity compared to SS316L. The findings suggest that decreasing the wall thickness of Gyroid HXs significantly enhances their heat transfer capabilities. Furthermore, varying the cell size revealed that smaller cell sizes offer superior heat transfer characteristics due to their increased surface area. These results underscore the importance of comprehensive design considerations in HX development to enhance thermal performance and meet specific application needs. © 2024, The Authors. All rights reserved.

关键词： Thermoanalysis

来源：评论

学校读者我要写书评

暂无评论

Impact of preparedness on safety behavior in dealing with emergencies on container ships: an analysis of the role of safety knowledge, motivation, and awareness

引用

Australian Journal of Maritime and Ocean Affairs 2024年第1期16卷 59-73页

作者： Kuncowati Sholihah, Qomariyatus Ciptadi, Gatot Koderi Faculty of Shipping Vocation Hang Tuah University Surabaya Indonesia Business Engineering and Industrial Management Compartment Brawijaya University Malang Indonesia Department of Animal Science Brawijaya University Malang Indonesia Environmental Science Doctoral Study Program Brawijaya University Malang Indonesia

The loading and unloading activities of container ships at the Tanjung Perak Port is imperative, as they can be carried out quickly and efficiently. These ships tend to have a high frequency of visits and possess the largest gross tonnage among ships used for the transportation of goods. The occurrence of an accident involving a container ship can have a detrimental effect on the seamless delivery of goods via sea transportation. Furthermore, the crew be adequately prepared in order to mitigate the risk. As evidenced by research on safety behaviour have not taken preparedness as a factor into consideration when addressing emergencies. Therefore, this study aims to investigate the impact of safety knowledge, motivation, and awareness on safety behaviour in dealing with emergencies on container ships in accordance with relevant regulations. A total of 180 ship crew members served as respondents and it analysed using SEM-PLS. The results showed that preparedness, including safety procedures, emergency training, and crew security culture is an important aspect in dealing with emergencies. Furthermore, this study obtained an R square value of 0.525 in the structural model, indicating that the independent variables have an influence on behaviour, and it was classified in the good category. © 2023 Informa UK Limited, trading as Taylor & Francis Group.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Sparse Possibilistic Clustering with L1 Regularization

Sparse Possibilistic Clustering with L1 Regularization

引用

IEEE International Conference on Granular Computing (GRC)

作者： Ryo Inokuchi Sadaaki Miyamoto Doctoral Program in Risk Engineering University of Tsukuba Ibaraki Japan Department of Risk Engineering University of Tsukuba Ibaraki Japan

Possibilistic clustering is an efficient method to detect high density regions and more robust than fuzzy c-means. However, it is not 'sparse', since a cluster center is expressed as a linear combination of all data. In this paper, we propose a sparse possibilistic clustering method with 11 regularization to find compact clusters. Due to a non- negative constraints for a membership, the baseline constant is introduced into the regularizer. The effectiveness of the proposed method is shown in illustrative examples.

关键词： Clustering algorithms Clustering methods Partitioning algorithms Data mining Noise robustness Machine learning algorithms Machine learning Virtual colonoscopy Euclidean distance Constraint optimization

来源：评论

学校读者我要写书评

暂无评论

Top-down and bottom-up processing of spatiotemporal patterns in a fully recurrent network of nonmonotonic neurons

Top-down and bottom-up processing of spatiotemporal patterns...

引用

International Conference on Neural Information Processing

作者： S. Murakami M. Morita Doctoral Program in Engineering University of Tsukuba Ibaraki Japan Institute of Engineering Mechanics and Systems University of Tsukuba Ibaraki Japan

A fully recurrent neural network with a nonmonotonic activation function that treats temporal sequences without expanding them into spatial patterns is described. This network associates a complex spatiotemporal pattern with a simple one using trajectory attractors formed by simple learning. Computer simulations show that the model not only has high recognition and generation abilities but can also perform advanced processing using bidirectional interactions.

关键词： Spatiotemporal phenomena Intelligent networks Neurons Recurrent neural networks Biological neural networks Pattern recognition Systems engineering and theory Computer simulation Neural networks Delay

来源：评论

学校读者我要写书评

暂无评论

Analysis on responsiveness and input traffic regulation in heterogeneous information systems

Analysis on responsiveness and input traffic regulation in h...

引用

International Workshop on Database and Expert Systems Applications

作者： Y. Ebihara H. Ushine Hongbing Chen S. Kimura Institute of Information Sciences and Electronics University of Tsukuba Japan Doctoral Program in Engineering University of Tsukuba Japan

Generally information systems have hierarchical protocol structures. The maximum traffic capacity of information systems with a multi-layered protocol has been studied under the condition of a heterogeneous environment of information systems. When the upper bound of a mean response time is given, the relationship between the maximum input traffic and end-to-end responsiveness has been derived theoretically by a new binding method.

关键词： Information analysis Delay Information systems Protocols Communication system control Traffic control Process control Upper bound Quality of service Control systems

来源：评论

学校读者我要写书评

暂无评论

An effect of humid climate on micro structure and chemical component of natural composite (Boehmeria nivea-Albizia falcata) based wind turbine blade 2

An effect of humid climate on micro structure and chemical c...

引用

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

作者： Sudarsono, S. Purwanto, P. Sudarsono, Johny W. Department of Mechanical Engineering Institut Sains Dan Teknoogi AKPRIND Yogyakarta Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Diponegoro Indonesia Doctoral Program of Environmental Science School of Postgraduate Studies Universitas Diponogero Semarang Indonesia Depart. of Material and Metallurgy Faculty of Engineering Universitas Indonesia Jakarta Indonesia

In this work, wind turbine blade NACA 4415 is fabricated from natural composite of Boehmeria nivea and Albizia falcate. The composite fabrication method used is hand lay up method. The aim of the work is to investigate an effect of humid climate of coastal area on micro structure and chemical composition of composite material of the blade. The wind turbine is tested at Pantai Baru, Bantul, Yogyakarta for 5.5 months. The micro structure scanning is performed with Scanning Electron Microscope (SEM) and material component is measured with Energy Dispersive X-ray spectrometer (EDS). The samples are tested before and after the use within 5.5 month at the location. The results show that composite material inexperienced interface degradation and insignificant change of micro structure. From EDS test, it is observed that Na filtration reduces C and increases O in composite material after 5.5 months. © 2018 The Authors, published by EDP Sciences.

关键词： Microstructure

来源：评论

学校读者我要写书评

暂无评论

Development of a Hybrid Actuation Hand Exoskeleton with Redundant Compliant Mechanisms 16

Development of a Hybrid Actuation Hand Exoskeleton with Redu...

引用

16th International Congress on Image and Signal Processing, BioMedical engineering and Informatics, CISP-BMEI 2023

作者： Shu, Bairui Sun, Zhenyu Zhang, Xinyu Yokoi, Hiroshi Jing, Xiaobei Li, Guanglin Yong, Xu The Siat Branch Shenzhen518055 China The University of Electro-Communications Department of Mechanical Engineering and Intelligent Systems Tokyo182-8585 Japan The University of Electro-Communications Joint Doctoral Program for Sustainability Research Tokyo182-8585 Japan

ISBN: (纸本)9798350330755

Exoskeleton robots are currently widely used in the field of rehabilitation medicine to effectively assist patients with hand function loss in their rehabilitation training. To accommodate the physiological characteristics of the hand, particularly the deviation of the joint rotation axis, this paper proposes a hybrid-driven hand exoskeleton system with redundant compliant mechanisms and conducts motion and force analysis on it. The exoskeleton system can independently drive three fingers and drive their joints separately. To verify whether the exoskeleton system meets the rehabilitation requirements, angle verification experiments and object grasping experiments were conducted. The results showed that the maximum joint range of motion of the exoskeleton system reached 66 °, with an average joint range of motion of 55 ° , fully meeting the rehabilitation needs. © 2023 IEEE.

关键词： Patient rehabilitation

来源：评论

学校读者我要写书评

暂无评论

A Preliminary Study of Decision Support Model of Photovoltaic for Village Area in South of Sumatera 4

A Preliminary Study of Decision Support Model of Photovoltai...

引用

4th International Conference on Informatics, Multimedia, Cyber and Information System, ICIMCIS 2022

作者： Ardianto, Feby Ermatita, Ermatita Sofijan, Armin Ayumi, Vina Noprisson, Handrie Purba, Mariana Universitas Sriwijaya Doctoral Program in Engineering Science Palembang Indonesia Universitas Muhammadiyah Palembang Engineering Faculty Palembang Indonesia Universitas Sriwijaya Faculty of Computer Science Palembang Indonesia Universitas Sriwijaya Engineering Faculty South Sumatera Indonesia Universitas Mercu Buana Faculty of Computer Science Jakarta Indonesia

ISBN: (纸本)9781665473279

Indonesia has a very high potential for solar energy irradiation, including in 66 countries in the sunbelt area. This can be alternative for power generation system that converts energy sources from solar radiation into electricity through solar cells or photovoltaic cells. This research goal is to develop an initial decision support model for the photovoltaic village area in South Sumatra, Indonesia. This research was conducted six months in Pandan Arang Village, Kandis District, Ogan Ilir Regency, South Sumatra. As the result, the proposed model is consisted of four sub-system, including photovoltaic system, data logger, database management and decision support system. Based on the results of experiments on solar panels with the parameters of current, voltage and light intensity, the highest value of light intensity was 1989.1 W/m2, while the voltage and current of 15.49V and current of 14.91 A were displayed through a 16x2 LCD display which served as information display in real time. The expected result in this study is an alternative fault detection PV system in the form of normal conditions, shadows, and overloads. © 2022 IEEE.

关键词： Decision support systems

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：