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arXiv 2025年

作者： Moradinasab, Nazanin Sengupta, Saurav Liu, Jiebei Syed, Sana Brown, Donald E. School of Data Science University of Virginia United States Systems and Information Engineering University of Virginia United States Division of Pediatric Gastroenterology Duke University Medical Center Duke Clinical Research Institute United States

Healthcare relies on multiple types of data, such as medical images, genetic information, and clinical records, to improve diagnosis and treatment. However, missing data is a common challenge due to privacy restrictions, cost, and technical issues, making many existing multi-modal models unreliable. To address this, we propose a new multimodel model called Mixture of Experts, Symmetric Aligning, and Reconstruction (MoSARe), a deep learning framework that handles incomplete multimodal data while maintaining high accuracy. MoSARe integrates expert selection, cross-modal attention, and contrastive learning to improve feature representation and decision-making. Our results show that MoSARe outperforms existing models in situations when the data is complete. Furthermore, it provides reliable predictions even when some data are missing. This makes it especially useful in real-world healthcare settings, including resource-limited environments. Our code is publicly available at MoSARe. © 2025, CC BY-NC-SA.

关键词： Contrastive Learning

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Sampling in Parametric and Nonparametric System Identification: Aliasing, Input Conditions, and Consistency

arXiv

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arXiv 2024年

作者： González, Rodrigo A. van Haren, Max Oomen, Tom Rojas, Cristian R. The Control Systems Technology Section Department of Mechanical Engineering Eindhoven University of Technology Eindhoven Netherlands The Delft Center for Systems and Control Delft University of Technology Delft Netherlands The Division of Decision and Control Systems KTH Royal Institute of Technology Stockholm Sweden

The sampling rate of input and output signals is known to play a critical role in the identification and control of dynamical systems. For slow-sampled continuous-time systems that do not satisfy the Nyquist-Shannon sampling condition for perfect signal reconstructability, careful consideration is required when identifying parametric and nonparametric models. In this letter, a comprehensive statistical analysis of estimators under slow sampling is performed. Necessary and sufficient conditions are obtained for unbiased estimates of the frequency response function beyond the Nyquist frequency, and it is shown that consistency of parametric estimators can be achieved even if input frequencies overlap after aliasing. Monte Carlo simulations confirm the theoretical properties. © 2024, CC BY-NC-ND.

关键词： Continuous time systems

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Study on the Lower Garments Dressing and Undressing Portable Support System for Independent Daily Toilet Activity*

Study on the Lower Garments Dressing and Undressing Portable...

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IEEE/SICE International Symposium on System Integration

作者： N. Miyazaki A. Uehara H. Kawamoto Y. Sankai Department of Intelligent and Mechanical Interaction System University of Tsukuba Tsukuba Japan Faculty of Engineering Information and Systems and Center of Cybernics Research University of Tsukuba Tsukuba Japan

ISBN: (数字)9798331531614

ISBN: (纸本)9798331531621

Independent excretion is crucial for maintaining self-worth among individuals. Toilet care significantly reduces the quality of life for care receivers while imposing physical and mental burdens on caregivers. Even if care receivers can move to toilets using a walker independently, they often require assistance with dressing and undressing their lower garments, such as trousers and underwear. A walker that assists with dressing and undressing lower garments could not only safely increase opportunities for independent walking to prevent disuse in any place, but it could also reduce the burden of caregivers. The purpose of this study is to develop the lower garments dressing and undressing portable support system attached to a walker and used by the care-receiver with independent gait function to support their daily toilet activity with dignity. In addition, we confirmed the basic performance of independent dressing and undressing using the basic experiment. The system comprised three units: the weight support, lower garment stretching, and lower garment up-and-down units. The weight support unit assisted the user in walking and maintaining a standing posture. The lower garment stretching unit comprised the lazy tong mechanism, which stretches the waistband of the lower garments on hooks by extending the mechanism to perform friction-based holding and reduce friction between the skin and lower garments during dressing and undressing. The lower garment up-and-down unit raises and lowers the lower garments, which are held by the lower garment stretching unit. The lower garment stretching unit and up-and-down unit were attached to both sides of the weight support unit. We conducted a basic experiment involving a series of dressing and undressing movements in the toilet with one of the authors of this study to confirm the basic performance of the system. Consequently, the system was able to dress and undress the lower garments up to the target height without removing them

关键词： Legged locomotion Friction Clothing Receivers System integration Skin

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Utility of dual screen e-paper for writing using reference documents 58th

Utility of dual screen e-paper for writing using reference d...

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58th International Symposium on Digest of Technical Papers, ICDT 2021

作者： Fujisaki, Kanako Omodani, Makoto Department of Electrical and Electronic Engineering Graduate School of Engineering Tokai University Japan Division of Information Systems and Design School of Science and Engineering Tokyo Denki University Japan

Dual screen e-Paper is expected to be useful when creating documents using reference documents. This study evaluated performances of referencing conditions using paper, e-Paper, and LCD and suggested that the working conditions using dual screen e-Paper brought almost the same performance as the working conditions using paper as a reference. © 2021 SID.

关键词： Liquid crystal displays

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3D-printed versatile biliary stents with nanoengineered surface for anti-hyperplasia and antibiofilm formation

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Bioactive Materials 2024年第7期37卷 172-190页

作者： Hyun Lee Dong-Sung Won Sinwoo Park Yubeen Park Ji Won Kim Ginam Han Yuhyun Na Min-Ho Kang Seok Beom Kim Heemin Kang Jun-Kyu Park Tae-Sik Jang Sang Jin Lee Su APark Sang Soo Lee Jung-Hoon Park Hyun-Do Jung Department of Biomedical-Chemical Engineering The Catholic University of KoreaBucheon14662Gyeonggi-doRepublic of Korea Department of Biotechnology The Catholic University of KoreaBucheon14662Republic of Korea Biomedical Engineering Research Center Asan Institute for Life SciencesAsan Medical Center88 Olympic-ro 43-gilSongpa-guSeoul05505Republic of Korea Department of Gastroenterology Asan Medical CenterUniversity of Ulsan College of Medicine88 Olympic-ro 43-gilSongpa-guSeoul05505Republic of Korea Research Center Metamorp IncSeoul08584Republic of Korea Department of Materials Science and Engineering Korea UniversitySeoul02841Republic of Korea IMT Inc Gwangju61086Republic of Korea School of Biomedical Convergence Engineering Pusan National UniversityYangsan50612Republic of Korea Biofunctional Materials Division of Applied Oral Sciences and Community Dental CareFaculty of DentistryThe University of Hong Kong34 Hospital RoadSai Ying PunHong Kong SARPR China Nano-Convergence Manufacturing Systems Research Division Korea Institute of Machinery and Materials(KIMM)Daejeon34103Republic of Korea Department of Convergence Medicine Asan Medical CenterUniversity of Ulsan College of Medicine88Olympic-ro 43-GilSongpa-guSeoul05505Republic of Korea Division of Materials Science and Engineering Hanyang UniversitySeoul04763Republic of Korea

Biliary strictures are characterized by the narrowing of the bile duct lumen,usually caused by surgical biliary injury,cancer,inflammation,and scarring from *** stent placement is a well-established method for the management of biliary ***,maintaining optimal mechanical properties of stents and designing surfaces that can prevent stent-induced tissue hyperplasia and biofilm formation are challenges in the fabrication of biodegradable biliary stents(BBSs)for customized *** study proposes a novel approach to fabricating functionalized polymer BBSs with nanoengineered surfaces using 3D *** 3D printed stents,fabricated from bioactive silica poly(ε-carprolactone)(PCL)via a sol-gel method,exhibited tunable mechanical properties suitable for supporting the bile duct while ensuring ***,a nanoengineered surface layer was successfully created on a sirolimus(SRL)-coated functionalized PCL(fPCL)stent using Zn ion sputtering-based plasma immersion ion implantation(S-PIII)treatment to enhance the performance of the *** nanoengineered surface of the SRL-coated fPCL stent effectively reduced bacterial responses and remarkably inhibited fibroblast proliferation and initial burst release of SRL in vitro *** physicochemical properties and biological behaviors,including in vitro biocompatibility and in vivo therapeutic efficacy in the rabbit bile duct,of the Zn-SRL@fPCL stent demonstrated its potential as a versatile platform for clinical applications in bile duct tissue engineering.

关键词： 3D printing Biodegradable biliary stent Functionalized polymer Zinc ion implantation Antibiofilm formation Anti-hyperplasia

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Life is a Journey in Smart and Sustainable Districts 17

Life is a Journey in Smart and Sustainable Districts

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17th International Conference on Wirtschaftsinformatik, WI 2022

作者： Graf-Drasch, Valerie Meindl, Oliver Voucko-Glockner, Hannes Digital Management University of Hohenheim Stuttgart Germany Project Group Business & Information Systems Engineering of the Fraunhofer FIT Augsburg Germany FIM Research Center University of Augsburg Augsburg Germany

Worldwide, cities grapple with the expectation of putting the brakes on climate change. Before acting, smart districts often serve as a testing bed for strategies towards carbon-neutrality. If effective, scale-up agendas at city-level are formulated. Smart districts are touted for their sustainability lever, as their core rationale is encouraging residents to use ‘smart energy technologies’ which increase efficiency or integrate renewable energy sources. The primary focus of these districts is on technical implementations of available sustainability services instead of orienting their service-portfolio around citizens. The result is a mismatch of supply and demand of sustainability-inducing services. We take in a customer journey perspective when searching for literature and conducting qualitative interviews. Results reveal a framework for mapping service touchpoints into citizen journeys. The framework is meant to benefit district planners to tailor their service selection to meet their citizens’ needs and exploit the district’s sustainability potential at the citizen interface. © 2022 17th International Conference on Wirtschaftsinformatik, WI 2022. All rights reserved.

关键词： Sustainable development

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3D-Printed Face Mask with Integrated Sensors as Protective and Monitoring Tool 1

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21st National Conference on Sensors and Microsystems, AISEM 2022

作者： Casalinuovo, Silvia Buzzin, Alessio Mastrandrea, Antonio Mazzetta, Ivan Barbirotta, Marcello Iannascoli, Lorenzo Nascetti, Augusto de Cesare, Giampiero Puglisi, Donatella Caputo, Domenico Department of Information Engineering Electronics and Telecommunications Sapienza University of Rome via Eudossiana 18 Rome00184 Italy School of Aerospace Engineering Sapienza University via Salaria 851 Rome00138 Italy Department of Physics Chemistry and Biology Sensor and Actuator Systems Division Linköping University Campus Valla Linköping581 83 Sweden

ISBN: (数字)9783031257063

ISBN: (纸本)9783031257056

The outbreak of the recent Covid-19 pandemic changed many aspects of our daily life, such as the constant wearing of face masks as protection from virus transmission risks. Furthermore, it exposed the healthcare system’s fragilities, showing the urgent need to design a more inclusive model that takes into account possible future emergencies, together with population’s aging and new severe pathologies. In this framework, face masks can be both a physical barrier against viruses and, at the same time, a telemedical diagnostic tool. In this paper, we propose a low-cost, 3D-printed face mask able to protect the wearer from virus transmission, thanks to internal FFP2 filters, and to monitor the air quality (temperature, humidity, CO2) inside the mask. Acquired data are automatically transmitted to a web terminal, thanks to sensors and electronics embedded in the mask. Our preliminary results encourage more efforts in these regards, towards rapid, inexpensive and smart ways to integrate more sensors into the mask’s breathing zone in order to use the patient’s breath as a fingerprint for various diseases. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.

关键词： Carbon dioxide

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UDT:U-shaped deformable transformer for subarachnoid haemorrhage image segmentation

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CAAI Transactions on Intelligence Technology 2024年第3期9卷 756-768页

作者： Wei Xie Lianghao Jin Shiqi Hua Hao Sun Bo Sun Zhigang Tu Jun Liu Hubei Provincial Key Laboratory of Artificial Intelligence and Smart Learning Central China Normal UniversityWuhanChina School of Computer Science Central China Normal UniversityWuhanChina National Language Resources Monitoring and Research Center for Network Media Central China Normal UniversityWuhanChina The First Affiliated Hospital of Dalian Medical University DalianChina State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhanChina Information Systems Technology and Design Pillar Singapore University of Technology and DesignSingaporeSingapore

Subarachnoid haemorrhage(SAH),mostly caused by the rupture of intracranial aneu-rysm,is a common disease with a high fatality *** lesions are generally diffusely distributed,showing a variety of scales with irregular *** complex characteristics of lesions make SAH segmentation a challenging *** cope with these difficulties,a u-shaped deformable transformer(UDT)is proposed for SAH ***,first,a multi-scale deformable attention(MSDA)module is exploited to model the diffuseness and scale-variant characteristics of SAH lesions,where the MSDA module can fuse features in different scales and adjust the attention field of each element dynamically to generate discriminative multi-scale ***,the cross deformable attention-based skip connection(CDASC)module is designed to model the irregular edge char-acteristic of SAH lesions,where the CDASC module can utilise the spatial details from encoder features to refine the spatial information of decoder ***,the MSDA and CDASC modules are embedded into the backbone Res-UNet to construct the proposed *** experiments are conducted on the self-built SAH-CT dataset and two public medical datasets(GlaS and MoNuSeg).Experimental results show that the presented UDT achieves the state-of-the-art performance.

关键词： image segmentation medical image processing

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POSSIBILITIES AND LIMITS OF DIAGNOSTIC METHODS FOR POWER TRANSFORMERS IN SERVICE 23

POSSIBILITIES AND LIMITS OF DIAGNOSTIC METHODS FOR POWER TRA...

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23rd International Symposium on High Voltage engineering, ISH 2023

作者： Schreiter, Sebastian Lohmeyer, Holger Werle, Peter HTWK Leipzig Leipzig University of Applied Science Faculty of Electrical Engineering and Information Technology Department of Electric Power Systems Germany FTZ Leipzig e. V. Research and Transfer Centre The HTWK Leipzig Germany Hitachi Energy Transformer Service Centre Halle Oil Lab. Halle Germany Leibniz University Hannover Institute of Electric Power Systems Division of High Voltage Engineering and Asset Management Schering-Institute Hannover Germany

ISBN: (纸本)9781839539954

The detection of possible faults in an early state is of elementary interest to operators of transformers in order to avoid unplanned outages. Such unplanned failures lead to the interruption of energy supply or even loss of production. Therefore, a large number of diagnostic methods are available such as oil analysis and electrical measurements up to high-voltage tests on site. For this reason, it is necessary for operators to select the meaningful diagnostic procedures in each case. In this contribution investigation are discussed concerning the question which diagnostic procedures or which combination of procedures can be used to detect faults reliable. This was done based on a large population of transformers in service. © The Institution of engineering & Technology 2023.

关键词： Distribution transformers

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Bridging the gap between resonance and adiabaticity:a compact and highly tolerant vertical coupling structure

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Photonics Research 2022年第9期10卷 2081-2090页

作者： CHUNHUI YAO QIXIANG CHENG GüNTHER ROELKENS RICHARD PENTY Centre for Photonic Systems Electrical Engineering DivisionDepartment of EngineeringUniversity of CambridgeCambridge CB3 OFAUK Department of Information Technology(INTEC) Photonics Research GroupGhent University-imec9052 Ghent Belgium

We present a compact,highly tolerant vertical coupling structure,which can be a generic design that bridges the gap between conventional resonant couplers and adiabatic couplers for heterogeneously integrated *** show insights on relaxing the coupler alignment tolerance and provide a detailed design *** the use of a multisegmented inverse taper structure,our design allows a certain proportion of the odd supermode to be excited during the coupling process,which simultaneously facilitates high tolerance and *** a total length of 87μm,our coupler is almost threefold shorter than the state-of-the-art alignment-tolerant adiabatic couplers and outperforms them by demonstrating a more than 94%coupling efficiency(for<0.3 d B coupling loss)with±1μm misalignment tolerance,which,to our best knowledge,is a new record for III-V-on-silicon vertical ***,our design has high tolerance to fabrication-induced structural deformation and ultrabroad *** features make it particularly suitable for building densely integrated III-V-onsilicon photonic circuits with commercially available microtransfer printing assembly *** proposed design can be widely adopted in various integration platforms.

关键词： coupling adiabatic structure

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