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Prediabetes detection in unconstrained conditions using wearable sensors

Clinical Nutrition Open Science 2024年 58卷 163-174页

作者： Tatli, Dimitra Papapanagiotou, Vasileios Liakos, Aris Tsapas, Apostolos Delopoulos, Anastasios Multimedia Understanding Group Dpt. of Electrical and Computer Engineering Faculty of Engineering AUTH Greece Embedded Systems Laboratory Institute of Electrical and Micro Engineering EPFL Lausanne Switzerland IMPACT Research Group Dpt. of Medicine Karolinska Institutet Huddinge Sweden Diabetes Centre Second Medical Department at Ippokratio General Hospital Thessaloniki Greece

Prediabetes is a common health condition that often goes undetected until it progresses to type 2 diabetes. Early identification of prediabetes is essential for timely intervention and prevention of complications. This research explores the feasibility of using wearable continuous glucose monitoring along with smartwatches with embedded inertial sensors to collect glucose measurements and acceleration signals respectively, for the early detection of prediabetes. We propose a methodology based on signal processing and machine learning techniques. Two feature sets are extracted from the collected signals, based both on a dynamic modeling of the human glucose-homeostasis system and on the Glucose curve, inspired by three major glucose related blood tests. Features are aggregated per individual using bootstrap. Support Vector Machines are used to classify normoglycemic vs. prediabetic individuals. We collected data from 22 participants for evaluation. The results are highly encouraging, demonstrating high sensitivity and precision. This work is a proof of concept, highlighting the potential of wearable devices in prediabetes assessment. Future directions involve expanding the study to a larger, more diverse population and exploring the integration of CGM and smartwatch functionalities into a unified device. Automated eating detecting algorithms can also be used. © 2024 The Authors

关键词： Continuous glucose monitors Machine learning Prediabetes Signal processing

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Thermal Properties of Refractory SWCNT-Based Nanocomposites Investigated by Automated Approach 17

Thermal Properties of Refractory SWCNT-Based Nanocomposites ...

引用

17th IEEE International Conference on Advanced Trends in Radioelectronics, Telecommunications and computer engineering, TCSET 2024

作者： Zhydenko, Illia Klym, Halyna Karbovnyk, Ivan Kostiv, Yuriy Vasylchyshyn, Ivanna Chalyy, Dmytro Lviv State University of Life Safety Department of fire tactics and emergency rescue work Lviv Ukraine Lviv Polytechnic National University Specialized Computer Systems Dpt. Lviv Ukraine Ivan Franko National University of Lviv Radiophysics and Computer Technology Dpt. Lviv Ukraine Lviv Polytechnic National University Information Technology Security Dpt. Lviv Ukraine Lviv Polytechnic National University Department of Theoretical and General Electrical Engineering Lviv Ukraine

ISBN: (纸本)9798331520564

Thermal properties of refractory nanocomposites with embedded single-walled carbon nanotubes were investigated using proposed automated approach. In this approach, differences in nanocomposites with varying parameters, observed under temperature differentials and thermal loads, are highlighted. These findings are crucial for their integration into sensor systems and for applications requiring enhanced fire resistance. The results indicate that nanocomposites with a nanotube dispersion time of 2 hours exhibit a peak temperature difference of 55 'C, while those with a 1-hour dispersion time show a maximum difference of 50 °C. A comparative analysis of heat transfer dynamics suggests that extending the dispersion time by 1 hour increases fire resistance by 15%. © 2024 IEEE.

关键词： Nanoclay

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Definition System of Human Body Position in Virtual Reality 16

Definition System of Human Body Position in Virtual Reality

引用

16th IEEE International Conference on Advanced Trends in Radioelectronics, Telecommunications and computer engineering, TCSET 2022

作者： Diachok, Roman Klym, Halyna Vasylchyshyn, Ivanna Karbovnyk, Ivan Lviv Polytechnic National University Specialized Computer Systems Dpt. Lviv Ukraine Lviv Polytechnic National University Theoretical and General Electrical Engineering Dpt. Lviv Ukraine Ivan Franko National University of Lviv Electronics and Computer Technologies Dpt. Lviv Ukraine

ISBN: (纸本)9781665468619

System for determining the position of the human body in the virtual world has been designed, implemented and researched. The system consists of two independent subsystems: subsystem for collecting, processing and transmitting data on the position of the human body and subsystem for visualizing collected data to the virtual world. In general, the system measures the position of the human body, processes the data, generates the set of commands for the virtual world and sends these commands to the virtual reality helmet for processing. Schemes of the system and algorithm of system's functioning are offered. The system using quaternions and Euler angles was investigated. Also was shown that the system works more efficiently when using quaternions. © 2022 IEEE.

关键词： Virtual reality

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Physical & Chemical Water-sorption Processes in the MgAl2O4Ceramics 12

Physical & Chemical Water-sorption Processes in the MgAl2O4C...

引用

12th IEEE International Conference "Nanomaterials: Applications and Properties", NAP 2022

作者： Klym, Halyna Karbovnyk, Ivan Vasylchyshyn, Ivanna Lviv Polytechnic National University Specialized Computer Systems Dpt. Lviv Ukraine Ivan Franko Nationak University Of Lviv Electronics And Computer Technology Dpt. Lviv Ukraine Lviv Polytechnic National University Theoretical And General Electrical Engineering Dpt. Lviv Ukraine

ISBN: (数字)9781665489829

ISBN: (纸本)9781665489829

Structural properties and physical and chemical water-sorption processes were investigated in the humidity-sensitive MgAl2O4 ceramics sintered at 1300 °C for 2 h under the influence of water. It is shown that ceramics has developed the structure of grains, grain boundaries and pores with trimodal pore size distribution. It is established that absorbed water in ceramics result in more intensive trapping of positrons in extended defects near grain boundaries. Furthermore, the presence of water in the inner structure of ceramics leads to specific fragmentation of free volume in the nanopores and ortho-positronium decaying in the water. © 2022 IEEE.

关键词： Nanopores

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When Circular Economy Meets the Smart City Ecosystem: Defining the Smart and Circular City

When Circular Economy Meets the Smart City Ecosystem: Defini...

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IEEE International Smart Cities Conference (ISC2)

作者： Georgios Mylonas Athanasios Kalogeras Sobah Abbas Petersen Luis Muñoz Ioannis Chatzigiannakis Industrial Systems Institute Athena Research Center Patras Greece Dpt. of Computer Science Norwegian University of Science and Technology Trondheim Norway Dpt. of Communications Engineering Universidad de Cantabria Santander Spain Dpt. of Computer Control and Management Engineering Sapienza University of Rome Rome Italy

ISBN: (数字)9798350364316

ISBN: (纸本)9798350364323

Smart cities have been a very active research area in the past 20 years, while continuously adapting to new technological advancements and keeping up with the times regarding sustainability and climate change. In this context, there have been numerous proposals to expand the scope of smart cities, focusing on resilience and sustainability, among other aspects, resulting in terms like smart sustainable cities. At the same time, there is an ongoing discussion regarding the degree in which smart cities put people at their centre. In this work, we argue toward expanding the current smart city definition by integrating the circular economy as one of its central pillars and adopting the term smart (and) circular city. We discuss the ways a smart and circular city encompasses both sustainability and smartness in an integral manner, while also being well-positioned to foster novel business activity and models and helping to place citizens at the heart of the smart city. In this sense, we also argue that previous research in smart cities and technologies, such as those related to Industry 4.0, can serve as a cornerstone to implement circular economy activities within cities, at a scale that exceeds current activities that are based on more conventional approaches. We also outline current open challenges in this domain and research questions that still need to be addressed.

关键词： Heart Climate change Smart cities Ecosystems Focusing Fourth Industrial Revolution Proposals Sustainable development Resilience Business

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When Circular Economy Meets the Smart City Ecosystem: Defining the Smart and Circular City

arXiv

引用

arXiv 2024年

作者： Mylonas, Georgios Kalogeras, Athanasios Petersen, Sobah Abbas Muñoz, Luis Chatzigiannakis, Ioannis Industrial Systems Institute Athena Research Center Patras Greece Dpt. of Computer Science Norwegian University of Science and Technology Trondheim Norway Dpt. of Communications Engineering Universidad de Cantabria Santander Spain Dpt. of Computer Control and Management Engineering Sapienza University of Rome Rome Italy

关键词： Circular economy

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FPGAs (Can Get Some) SATisfaction

arXiv

引用

arXiv 2023年

作者： Govindasamy, Hariprasadh Esfandiari, Babak Garcia, Paulo Dpt. Systems Computer Engineering Carleton University Canada International School of Engineering Chulalongkorn University Thailand

We present a hardware-accelerated SAT solver suitable for processor/Field Programmable Gate Arrays (FPGA) hybrid platforms, which have become the norm in the embedded domain. Our solution addresses a known bottleneck in SAT solving acceleration: unlike prior state-of-the-art solutions that have addressed the same bottleneck by limiting the amount of exploited parallelism, our solver takes advantage of fine-grained parallelization opportunities by hot-swapping FPGA clause assignments at runtime. It is also the first modern completely open-source SAT accelerator, and formula size is limited only by the amount of available external memory, not by on-chip FPGA memory. Evaluation is performed on a Xilinx Zynq platform: experiments support that hardware acceleration results in shorter execution time across varying formula sizes, subject to formula partitioning strategy. We outperform prior state-of-the-art by 1.7x and 1.1x, respectively, for 2 representative benchmarks, and boast up to 6x performance increase over software-only implementation. © 2023, CC BY.

关键词： Field programmable gate arrays (FPGA)

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A Comprehensive Methodology for Assessing the Economic Viability of EV Charging Infrastructure in Brazil

A Comprehensive Methodology for Assessing the Economic Viabi...

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Smart Power & Internet Energy systems (SPIES), International Conference on

作者： Daywes Pinheiro Neto António Paulo Coimbra Aníbal T. De Almeida Tony R. Almeida Pedro Moura Letícia C. Ucker Raphael A. Gomes Alana S. Magalhães Center for Experimental and Technological Research and Studies Federal Institute of Goiás Brazil Dpt. of Electrical and Computer Engineering Institute of Systems and Robotics University of Coimbra Portugal

ISBN: (数字)9798350368864

ISBN: (纸本)9798350368871

This study proposes a comprehensive methodology to assess the economic viability of electric vehicle (EV) charging infrastructure projects in Brazil, specifically targeting connections with a capacity of up to 112.5 kW, which are subject to flat electricity tariffs. The methodology employs a novel EV energy consumption model, integrates the regulatory framework of net metering and relevant tax considerations, explores the potential cost-saving benefits of photovoltaic (PV) system integration, and utilizes key economic indicators like Net Present Value and Discounted Payback Time to quantify project profitability. By accounting for a set of EV demand scenarios (low, moderate, and high), the methodology provides a multifaceted assessment of project viability. A case study demonstrates the methodology's application, highlighting the potential economic benefits of such investments. The results suggest that the minimum charging service fee required for economic viability ranges from 0.17 to 0.29 USD/kWh, with a clear cost advantage associated with PV integration observed across all scenarios.

关键词： Economics Photovoltaic systems Costs Finance Transportation Tariffs System integration Charging stations Electric vehicle charging Sustainable development

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DPPL Hallway Tracker: Hospital Contact Tracing During the COVID-19 Pandemic 9

DPPL Hallway Tracker: Hospital Contact Tracing During the CO...

引用

9th Scholar's Yearly Symposium of Technology, engineering and Mathematics, SYSTEM 2023

作者： Marinoni, Christian Ponzi, Valerio Comminiello, Danilo Dpt. of Information Engineering Electronics and Telecommunications Sapienza University of Rome Via Eudossiana 18 Roma00184 Italy Department of Computer Control and Management Engineering Sapienza University of Rome Via Ariosto 25 Roma00185 Italy Institute for Systems Analysis and Computer Science Italian National Research Council Via dei Taurini 19 Roma00185 Italy

During the COVID-19 pandemic, the use of a people tracking system could have been crucial, particularly in sensitive environments, such as hospitals. DPPL Hallway Tracker is a framework that uses security camera footage to determine which rooms in a corridor a person has entered. It generates a database containing all the people identified and allows quick identification of potential cases of infection based on the time spent in a room and its maximum capacity. DPPL Hallway Tracker is structured in two phases: detection and re-identification. In the first phase, it exploits Mask RCNN to identify people and room doors. In the second one, it uses the deep association metric model from DeepSORT to re-identify a person as he leaves a room. © 2023 Copyright for this paper by its authors.

关键词： COVID-19

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Analysis of classifier training on synthetic data for cross-domain datasets

arXiv

引用

arXiv 2024年

作者： Cortés, Andoni Rodríguez, Clemente Vélez, Gorka Barandiarán, Javier Nieto, Marcos Deparment of Intelligent Transportation Systems and Engineering Deparment Vicomtech Paseo Mikeletegi 57 San Sebastian20009 Spain Dpt. of Computer Architecture San Sebastian Spain

A major challenges of deep learning (DL) is the necessity to collect huge amounts of training data. Often, the lack of a sufficiently large dataset discourages the use of DL in certain applications. Typically, acquiring the required amounts of data costs considerable time, material and effort. To mitigate this problem, the use of synthetic images combined with real data is a popular approach, widely adopted in the scientific community to effectively train various detectors. In this study, we examined the potential of synthetic data-based training in the field of intelligent transportation systems. Our focus is on camera-based traffic sign recognition applications for advanced driver assistance systems and autonomous driving. The proposed augmentation pipeline of synthetic datasets includes novel augmentation processes such as structured shadows and gaussian specular highlights. A well-known DL model was trained with different datasets to compare the performance of synthetic and real image-based trained models. Additionally, a new, detailed method to objectively compare these models is proposed. Synthetic images are generated using a semi-supervised errors-guide method which is also described. Our experiments showed that a synthetic image-based approach outperforms in most cases real image-based training when applied to cross-domain test datasets (+10% precision for GTSRB dataset) and consequently, the generalization of the model is improved decreasing the cost of acquiring images. © 2024, CC BY-NC-ND.

关键词： Advanced driver assistance systems

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