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IEEE Symposium on Computational Intelligence and Bioinformatics and Computational Biology (CIBCB)

作者： Daisuke Chugo Noburiho Goto Sho Yokota Satoshi Muramatsu Hiroshi Hashimoto Graduate School of Science and Technology Kwansei Gakuin University Sanda Hyogo Japan School of Information Science and Technology Tokai University Hiratsuka Kanagawa Japan Faculty of Science and Engineering Toyo University Kawagoe Saitama Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Shinagawa Tokyo Japan

ISBN: (纸本)9781509000128

This paper proposes a novel driving-assistance system for manual wheelchairs with consideration of both uphill and downhill conditions. On an inclined road, there is a high risk of a wheelchair moving in a direction that the user does not intend. In our previous works, the user has driven our assistive wheelchair in the usual manner. Our proposed system estimates its user's intentions and passively works to complement their intentional force by negating the wheel traction that is generated by the road's inclination using only the servo brakes on each wheel. Nevertheless, in some cases, our system fails to assist the driving motion of its user because the user drives the wheelchair in several ways that depend upon the environmental condition, for example, during uphill or downhill driving. The required assistance is not constant according to the situation, and it is difficult to assist with one wheel-control algorithm. Therefore, in this study, we first investigate the required assistance condition according to the driving situation by conducting a preliminary experiment with wheelchair users. Considering the results of this investigation, we then propose a novel user interface that intuitively shows the system information and a wheel-control algorithm that selects a suitable wheel controller according to the driving situation.

关键词： Wheelchairs Brakes Wheels Roads Servomotors Manuals Force

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Generating Synthetic Values on Automatic Weather Station Dataset using GAIN

Generating Synthetic Values on Automatic Weather Station Dat...

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International Conference on Instrumentation Control and Automation (ICA)

作者： Bayu Santoso Muhammad Ryan Faqihza Mukhlish Deddy Kurniadi Master Program in Instrumentation and Control Institut Teknologi Bandung Bandung Indonesia Department of Instrumentation and Calibration Badan Meteorologi Klimatologi dan Geofisika Medan Indonesia Center of Aviation Meteorology Badan Meteorologi Klimatologi dan Geofisika Jakarta Indonesia Engineering Physics Research Group Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia Instrumentation and Control Research Group Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia

The Automatic Weather Station (AWS) is an automated instrument designed to gather meteorological parameters within a given environment. The dataset obtained from AWS often contains missing values due to various factors such as sensor malfunction or transmission issues. Nonetheless, the data produced by AWS plays a vital role in weather analysis and prediction. In this study, the authors employ the Generative Adversarial Imputation Network algorithm to generate synthetic values for the missing data in the AWS dataset. The dataset is divided into four schemes, each exhibiting different distributions of missing values at 5, 25, 50, and 80 gaps, respectively. The synthetic values generated by the algorithm are subsequently compared to the ground truth values using the Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) metrics. The findings demonstrate that for the air pressure parameter, both the 5 gaps and 25 gaps models exhibit RMSE and MAE values below 2 hPa. Similarly, the models for the air temperature parameter demonstrate RMSE and MAE values below 2°C. As for the relative humidity parameter, the models achieve RMSE and MAE values below 15%. Therefore, both the 5 gaps and 25 gaps models satisfy the error threshold established by the Badan Meteorologi Klimatologi, dan Geofisika for AWS data quality control.

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Identification of rice supply chain risk to DKI Jakarta through Cipinang primary rice market

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IOP Conference Series: Earth and Environmental Science 2018年第1期106卷

作者： D Sugiarto A Ariwibowo I Mardianto D Surjasa Information System Program Faculty of Industrial Technology Universitas Trisakti Jakarta Indonesia Informatics Program Faculty of Industrial Technology Universitas Trisakti Jakarta Indonesia Industrial Engineering Master Program Faculty of Industrial Technology Universitas Trisakti Jakarta Indonesia

This paper identifies several sources of risks in DKI Jakarta rice supply chain that through Cipinang Primary Rice Market (CPRM). Secondary data from several sources were collected and analysed using pareto chart and time series analysis. Based on the pareto analysis, it was known that there was a change in the order of suppliers whereas in 2011, 80% of the supply came only from Cirebon, Karawang and Bandung (West Java Province). While in 2015 the main source of supply changed to Cirebon, Central Java and Karawang. Linear trend equation using decomposition model for Cirebon and Karawang showed trend of decreasing monthly supply while Central Java had a positive trend. Harvest area of wetland paddy in Cirebon and Karawang showed a negative trend in the last 6 years. The data also showed that West Java Province was the province with the largest rice crop area affected by plant organism attack and drought disaster in 2015. DKI Jakarta had several potential supply chain risks from rice supply, drought risk and pests risk where the province of West Java, which previously could become a major supplier began to require supply assistance from other provinces, especially Central Java.

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Design of customer knowledge management system for Aglaonema Nursery in South Tangerang, Indonesia

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IOP Conference Series: Materials Science and engineering 2017年第1期277卷

作者： D Sugiarto I Mardianto TS Dewayana M Khadafi Faculty of Industrial Technology Information System Program Trisakti University Jakarta 11440 Indonesia Faculty of Industrial Technology Informatics Program Trisakti University Jakarta 11440 Indonesia Faculty of Industrial Technology Master of Industrial Engineering Program Trisakti University Jakarta 11440 Indonesia

The purpose of this paper is to describe the design of customer knowledge management system to support customer relationship management activities for an aglaonema nursery in South Tangerang, Indonesia. system. The steps were knowledge identification (knowledge about customer, knowledge from customer, knowledge for customer), knowledge capture, codification, analysis of system requirement and create use case and activity diagram. The result showed that some key knowledge were about supporting customer in plant care (know how) and types of aglaonema including with the prices (know what). That knowledge for customer then codified and shared in knowledge portal website integrated with social media. Knowledge about customer were about customers and their behaviour in purchasing aglaonema. Knowledge from customer were about feedback, favorite and customer experience. Codified knowledge were placed and shared using content management system based on wordpress.

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Ergometer-Based Lower Limb Rehabilitation Robot for Post-Stroke Hemiplegic Patients with Voluntary Movement Induction using Muscle Synergy

Ergometer-Based Lower Limb Rehabilitation Robot for Post-Str...

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Conference on Human system Interactions, HSI

作者： Daisuke Chugo Yuya Miyazaki Honoka Kubo Satoshi Muramatsu Sho Yokota Jin-Hua She Keio Ishiguro Hiroshi Hashimoto Graduate School of Science and Technology Kwansei Gakuin University Sanda Hyogo Japan School of Engineering Kwansei Gakuin University Sanda Hyogo Japan School of Information Science and Technology Tokai University Hiratsuka Kanagawa Japan Faculty of Science and Engineering Toyo University Kawagoe Saitama Japan School of Engineering Tokyo University of Technology Hachioji Tokyo Japan School of Health Sciences Tokyo University of Technology Kamata Tokyo Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Shinagawa Tokyo Japan

ISBN: (数字)9798350362916

ISBN: (纸本)9798350362923

This paper proposes a lower limb rehabilitation robot for normal walking in post-stroke hemiplegic patients. Ergometers are commonly used for lower limb rehabilitation, but their use has depended on the experience of physiotherapists. Therefore, this paper proposes a new rehabilitation robot based on an ergometer that leads the patient to voluntary muscle activity and learns how to use the muscles required for normal walking. The paper first compares how pedestrians walk between a normal person and a hemiplegic patient using muscle synergy analysis to identify the lower limb usage required for normal gait. The paper then proposes a method to approach the use of the lower limb required for normal gait by changing the load depending on the position of the pedals when a hemiplegic patient uses the ergometer. This will enable stroke hemiplegic patients to train for normal gait by pedaling the ergometer. The above proposed method has been implemented in our prototype robot and the effectiveness of our proposed method has been confirmed in experiments with post-stroke hemiplegic patients as subjects.

关键词： Legged locomotion Training Pedestrians Prototypes Muscles Stroke (medical condition) Assistive robots

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A manual wheelchair assistance system which cancels a gravitational force on a slope

A manual wheelchair assistance system which cancels a gravit...

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IEEE International Conference on industrial technology (ICIT)

作者： Daisuke Chugo Masahiro Goto Satoshi Muramatsu Sho Yokota Yuki Sakaida Hiroshi Hashimoto Graduate School of Science and Technology Kwansei Gakuin University Sanda Hyogo Japan RIKEN-SRK Collaboration Center for Human-Interactive Robot Research RIKEN (The Institute of Physical and Chemical Research) Nagoya Aichi Japan Faculty of Science and Engineering Toyo University Kawagoe Saitama Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Shinagawa Tokyo Japan

This paper proposes a novel driving assistance system for a manual wheelchair. On an inclination road, there is a high risk of moving the direction, which a manual wheelchair user does not intend, because of a gravitational force. Our proposed system cancels the wheel traction, which is generated according to the inclination of the road, using only servo brakes on each wheel. Our system measures the inclination of the road and estimates the wheel traction generated by a gravitational force. Then, our system cancels this traction and its user can use this wheelchair as its user drives it on no inclination flat ground. Its user can use it intuitively because its user drives this wheelchair by rowing its hand rims as usual and our assistance system works passively with their own intentional force. For realizing this idea, our system uses only servo brakes which can generate the various required brake traction. Our system does not require actuators, and its mechanism is simple and low cost. There is no risk by malfunction of servomotors. We test our proposed assistance system by the experiments with our prototype and verify its effectiveness.

关键词： Wheelchairs Wheels Acceleration Gravity Roads Servomotors

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Effects of Cr Atom Adsorption Configurations on Anatase Tio2(101) Toward Methane-to-Methanol Conversion Mechanism

SSRN

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SSRN 2024年

作者： Afifah, Hasna Mahyuddin, Muhammad Haris Saputro, Adhitya Gandaryus Shukri, Ganes Dipojono, Hermawan Kresno Doctoral Program of Engineering Physics Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Quantum and Nano Technology Research Group Faculty of Industrial Technology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia Research Center for Nanoscience and Nanotechnology Institut Teknologi Bandung Jl. Ganesha 10 Bandung40132 Indonesia

The application of single atom catalysts (SAC) has been widely studied for various chemical reactions including the direct methane-to-methanol (DMTM) conversion. Here, by means of density functional theory (DFT) calculation coupled with the climbing-image nudged elastic band (CI-NEB) method, we investigate the methane-to-methanol reaction processes on the single Cr-decorated anatase TiO2(101). We analyze the DMTM activities and reactivities on two surface configurations i.e., the Cr either as a substitutional or adatom dopant on top of the TiO2(101) surface. While we find that both configurations energetically promote the dissociation of H2O2 that acts as the oxidant, the subsequent methane oxidation proceeds in considerably distinct mechanisms between the two Cr-decorated TiO2(101) systems. The configuration with Cr as an adatom favors the non-radical methane activation (i.e., C-H bond cleavage of CH4) with lower activation barrier relative to the Cr-substituted TiO2(101) system, but it falls short of methanol conversion due to the kinetically high barrier of the subsequent CH3* + OH* → CH3OH* reaction through the Langmuir-Hinshelwood mechanism. On the other hand, the Cr-substituted TiO2(101) configuration needs to overcome the higher activation barrier of C-H bond cleavage through the radical pathway, but it shows an overall more favorable energetic profile for methanol formation via the Eley-Rideal mechanism. We find that both as adatom and substitutional dopant, Cr plays an important role as an active site for H2O2 decomposition into either two adsorbed OH fragments or an oxygen atom and water molecule. In general, these findings can guide further design of reactive and selective DMTM conversion in particular when one utilizes the transition metal decorated TiO2 based catalyst. © 2024, The Authors. All rights reserved.

关键词： Catalysts

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technology Roadmap for Flexible Sensors

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ACS NANO 2023年第6期17卷 5211-5295页

作者： Luo, Yifei Abidian, Mohammad Reza Ahn, Jong-Hyun Akinwande, Deji Andrews, Anne M. Antonietti, Markus Bao, Zhenan Berggren, Magnus Berkey, Christopher A. Bettinger, Christopher John Chen, Jun Chen, Peng Cheng, Wenlong Cheng, Xu Choi, Seon-Jin Chortos, Alex Dagdeviren, Canan Dauskardt, Reinhold H. Di, Chong-an Dickey, Michael D. Duan, Xiangfeng Facchetti, Antonio Fan, Zhiyong Fang, Yin Feng, Jianyou Feng, Xue Gao, Huajian Gao, Wei Gong, Xiwen Guo, Chuan Fei Guo, Xiaojun Hartel, Martin C. He, Zihan Ho, John S. Hu, Youfan Huang, Qiyao Huang, Yu Huo, Fengwei Hussain, Muhammad M. Javey, Ali Jeong, Unyong Jiang, Chen Jiang, Xingyu Kang, Jiheong Karnaushenko, Daniil Khademhosseini, Ali Kim, Dae-Hyeong Kim, Il-Doo Kireev, Dmitry Kong, Lingxuan Lee, Chengkuo Lee, Nae-Eung Lee, Pooi See Lee, Tae-Woo Li, Fengyu Li, Jinxing Liang, Cuiyuan Lim, Chwee Teck Lin, Yuanjing Lipomi, Darren J. Liu, Jia Liu, Kai Liu, Nan Liu, Ren Liu, Yuxin Liu, Yuxuan Liu, Zhiyuan Liu, Zhuangjian Loh, Xian Jun Lu, Nanshu Lv, Zhisheng Magdassi, Shlomo Malliaras, George G. Matsuhisa, Naoji Nathan, Arokia Niu, Simiao Pan, Jieming Pang, Changhyun Pei, Qibing Peng, Huisheng Qi, Dianpeng Ren, Huaying Rogers, John A. Rowe, Aaron Schmidt, Oliver G. Sekitani, Tsuyoshi Seo, Dae-Gyo Shen, Guozhen Sheng, Xing Shi, Qiongfeng Someya, Takao Song, Yanlin Stavrinidou, Eleni Su, Meng Sun, Xuemei Takei, Kuniharu Tao, Xiao-Ming Tee, Benjamin C. K. Thean, Aaron Voon-Yew Trung, Tran Quang Wan, Changjin Wang, Huiliang Wang, Joseph Wang, Ming Wang, Sihong Wang, Ting Wang, Zhong Lin Weiss, Paul S. Wen, Hanqi Xu, Sheng Xu, Tailin Yan, Hongping Yan, Xuzhou Yang, Hui Yang, Le Yang, Shuaijian Yin, Lan Yu, Cunjiang Yu, Guihua Yu, Jing Yu, Shu-Hong Yu, Xinge Zamburg, Evgeny Zhang, Haixia Zhang, Xiangyu Zhang, Xiaosheng Zhang, Xueji Zhang, Yihui Zhang, Yu Zhao, Siyuan Zhao, Xuanhe Zheng, Yuanjin Zheng, Yu-Qing Zheng, Zijian Zhou, Tao Zhu, Bowen Zhu, Ming Zhu, Rong Zhu, Yangzhi Zhu, Yong Zou, Guijin Chen, Xiaodong 08-03 Innovis Singapore 138634 Republic of Singapore Innovative Centre for Flexible Devices (iFLEX) School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore Department of Biomedical Engineering University of Houston Houston Texas 77024 United States School of Electrical and Electronic Engineering Yonsei University Seoul 03722 Republic of Korea Department of Electrical and Computer Engineering The University of Texas at Austin Austin Texas 78712 United States Microelectronics Research Center The University of Texas at Austin Austin Texas 78758 United States Department of Chemistry and Biochemistry California NanoSystems Institute and Department of Psychiatry and Biobehavioral Sciences Semel Institute for Neuroscience and Human Behavior and Hatos Center for Neuropharmacology University of California Los Angeles Los Angeles California 90095 United States Colloid Chemistry Department Max Planck Institute of Colloids and Interfaces 14476 Potsdam Germany Department of Chemical Engineering Stanford University Stanford California 94305 United States Laboratory of Organic Electronics Department of Science and Technology Campus Norrköping Linköping University 83 Linköping Sweden Wallenberg Initiative Materials Science for Sustainability (WISE) and Wallenberg Wood Science Center (WWSC) SE-100 44 Stockholm Sweden Department of Materials Science and Engineering Stanford University Stanford California 94301 United States Department of Biomedical Engineering and Department of Materials Science and Engineering Carnegie Mellon University Pittsburgh Pennsylvania 15213 United States Department of Bioengineering University of California Los Angeles Los Angeles California 90095 United States School of Chemistry Chemical Engineering and Biotechnology Nanyang Technological University Singapore 637457 Singapore Nanobionics Group Department of Chemical and Biological Engineering Monash University Clayton Australia 3800 Monash

Humans rely increasingly on sensors to address grand challenges and to improve quality of life in the era of digitalization and big data. For ubiquitous sensing, flexible sensors are developed to overcome the limitations of conventional rigid counterparts. Despite rapid advancement in bench-side research over the last decade, the market adoption of flexible sensors remains limited. To ease and to expedite their deployment, here, we identify bottlenecks hindering the maturation of flexible sensors and propose promising solutions. We first analyze continued...challenges in achieving satisfactory sensing performance for real-world applications and then summarize issues in compatible sensor-biology interfaces, followed by brief discussions on powering and connecting sensor networks. Issues en route to commercialization and for sustainable growth of the sector are also analyzed, highlighting environmental concerns and emphasizing nontechnical issues such as business, regulatory, and ethical considerations. Additionally, we look at future intelligent flexible sensors. In proposing a comprehensive roadmap, we hope to steer research efforts towards common goals and to guide coordinated development strategies from disparate communities. Through such collaborative

关键词： soft materials mechanics engineering flexible electronics conformable sensors bioelectronics human-machine interfaces body area sensor networks technology translation sustainable electronics

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Noise reduction of air conditioning electric railway cabin

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AIP Conference Proceedings 2019年第1期2088卷

作者： Tasya Nadya Hartati Gary Sebastian Pangihutan Iwan Prasetiyo R. Sugeng Joko Sarwono Anugrah Sudarsono Sabdono Keysha Wellviestu Zakri 1Engineering Physics Program Faculty of Industrial Technology Institut Teknologi Bandung Indonesia

The development of electric railway train has been growing rapidly in the last few years. Comfort is one of the important aspects in electric railway cabin, including the acoustic comfort. İn this paper, noise reduction efforts for air conditioning system of electric railway trains are discussed. Air-borne noise and structure-borne noise are considered while finite element analysis is used to study the contribution of each path to the total sound pressure level found in the passenger area. The air-borne noise control is realized by using the acoustic liner on the internal wall of the ducting where fibrous porous absorbers are used. This approach decreases the sound pressure level as much as 29.3 dB. Meanwhile, the structure-borne noise is reduced by placing a set of a parallel stiffener at the ducting wall. This approach can reduce the sound pressure level up to 28.9 dB at low-frequency range. Combining both of the acoustic liner and stiffener altogether can reduce the sound pressure level up to 37.1 dB by which the overall sound pressure level at passenger area is around 51.2 dBA.

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Analysis of the musculoskeletal effects of lower limb slippage when indoor dogs walk on the wooden floor

Analysis of the musculoskeletal effects of lower limb slippa...

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IEEE International Symposium on industrial Electronics (ISIE)

作者： Daisuke Chugo Miyabi Igarashi Satoshi Muramatsu Sho Yokota Jin-Hua She Hiroshi Hashimoto Uemura Takashi Hiroaki Kamishina Yoshiharu Hata Takayuki Yamada Takahiro Uchida Graduate School of Science and Technology Kwansei Gakuin University Sanda Hyogo Japan School of Science and Technology Kwansei Gakuin University Sanda Hyogo Japan School of Information Science and Technology Tokai University Hiratsuka Kanagawa Japan Faculty of Science and Engineering Toyo University Kawagoe Saitama Japan School of Engineering Tokyo University of Technology Hachioji Tokyo Japan Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Shinagawa Tokyo Japan KyotoAR Animal Advanced Medical Center Kuse Kyoto Japan Rinrei Co. Ltd. Chuo Tokyo Japan

ISBN: (数字)9798350394085

ISBN: (纸本)9798350394092

In recent years, dogs are commonly kept indoors. Dogs, as animals that inherently walk on grippy outdoor ground, sometimes slip when walking on indoor wooden flooring, which can lead to injuries and arthritis. We have therefore developed a method to increase the coefficient of friction by applying a special coating to the wooden flooring to make it less slippery when the dog walks on it. The objective of this paper is to investigate whether the friction coefficient of the flooring can prevent dogs’ lower limbs from slipping when they walk, and to analyze the effects of lower limb slippage on the musculoskeletal system of dogs when they walk on the flooring. In the measurement experiment, walking movements were performed with and without paint coating on the wooden flooring, the test dogs were applied to a 3D musculoskeletal system simulation software model, and the amount of muscular force exerted was calculated through a simulation experiment with measured data. In addition, the floor reaction forces of the lower limbs during walking were measured and compared, and the effects of the friction coefficient of the floor environment on walking behavior were discussed.

关键词： Legged locomotion Solid modeling Force measurement Three-dimensional displays Friction Force Dogs

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