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4th International Conference on Mathematics, Statistics, and Computing Technology, ICMSCT 2023

作者： Pasaribu, Udjianna Sekteria Sa’idah, Nur Faizatus Study Program of Mathematics Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Bandung Indonesia Study Program of Industrial Engineering Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia

ISBN: (纸本)9789819734498

In the life insurance industry, determining the amount of premium paid by the insured to the insurer is crucial. This paper uses Stackelberg’s game theory to describe the reality that occurs between two parties involved in this business, i.e. the insured and the insurer. The insurer as a leader offers four different insurance products, and the insured as a follower has two strategies: (1) accepting or (2) rejecting one of the offered insurance products. The amount of premium is obtained by optimizing the insurer’s profit for each insurance product and the insured’s choice of strategy with a certain premium value limit. For the model formulation, the Indonesia Mortality Table IV is used as a guide to obtaining the parameters of the Makeham and Gompertz distribution (survival) functions. The developed model can determine (1) the amount of premium for each insurance product offered, (2) the expectation of insureds who will purchase each insurance product, and (3) the maximum profit for each of the two parties. A genetic algorithm is used to obtain the best solution. The result shows that the third insurance product, which uses Makeham distribution and offers two types of benefits, is preferred by the two parties involved. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Game theory

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Integrative analysis of datasets of proteins in Sjogren's syndrome patients

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Revista Colombiana de Reumatologia 2023年第3期30卷 238-242页

作者： Triana Vidal, Luz Elena Gutiérrez, Nicolás Cardona, Camilo Núñez Torres, Jorge Brayam Agudelo Ocampo, Mónica Yulieth Medicine Program Research Group in Epidemiology and Services (Griepis) Faculty of Health Sciences Universidad Libre Cali Colombia Biology Program Department of Natural Sciences and Mathematics Biphotonics Research Group Faculty of Engineering and Sciences Pontificia Universidad Javeriana Cali Colombia

This study aims to compare reported proteins expressed in controls and patients with SS in tear, saliva and serum from proteins identified in papers published between 2000 and 2020, to obtain a systematic comparison of proteins expressed in SS patients to find proteins that can be used as biomarkers in SS. Differentially expressed proteins from Sjögren's patients identified in the studies were classified by body fluid (saliva, serum, tear and saliva from healthy patients). Protein pairing was carried out in RStudio, using the previously created data framework, PANTHER and REACTOME 7.O. were used to explore the type of proteins associated with SS and enriched metabolic pathways. Five differentially expressed proteins were found in saliva, tear, and serum. Finally, this study suggests antithrombin III and E-cadherin. as biomarkers in SS, because these proteins are differentially expressed in plasma, blood, and tear, and that neutrophil degranulation pathway as a target for SS. © 2022 Asociación Colombiana de Reumatología

关键词： Biomarker Protein Sjögren's syndrome Systematic comparison

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Classification of Multivariate Time Series Signals Using Self-Supervised Representation Learning for Condition Monitoring 30

Classification of Multivariate Time Series Signals Using Sel...

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30th International Symposium on Semiconductor Manufacturing, ISSM 2024

作者： Sumiya, Koichi Arima, Sumika University of Tsukuba Doctoral Program in Policy and Planning Sciences Tsukuba Japan University of Tsukuba Institute of Systems and Information Engineering Tsukuba Japan

ISBN: (纸本)9798331510589

In the analysis of real-world data, two significant challenges often arise: high-dimensional signals and their temporal interactions. To address these issues and identify transitions in process conditions through end-to-end learning, we propose a self-supervised representation learning framework that conceptualizes signals as images. This straightforward approach classifies imaged signals as time-specific conditions by maximizing mutual information within a domain-specific feature space. We applied this methodology to two labeled open datasets and one unlabeled real-world process dataset, yielding promising results. © 2024 IEEE.

关键词： Self-supervised learning

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Relationship between drought and soil erosion based on the normalized differential water index(NDWI)and revised universal soil loss equation(RUSLE)model

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Regional Sustainability 2024年第4期5卷 133-144页

作者： Muhammad RENDANA Wan Mohd Razi IDRIS Febrinasti ALIA Supli Effendi RAHIM Muhammad YAMIN Muhammad IZZUDIN Department of Chemical Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya30662Indonesia Master Program of Environmental Management Graduate SchoolUniversitas SriwijayaPalembang30139Indonesia Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan MalaysiaBangi43600Malaysia Department of Civil Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya30662Indonesia Master Program of Agricultural Sciences Graduate Study ProgramUniversitas Muhammadiyah PalembangPalembang30263Indonesia Department of Agribusiness Faculty of AgricultureUniversitas SriwijayaIndralaya30662Indonesia Department of Sociology Faculty of Social and Political SciencesUniversitas SriwijayaIndralaya30662Indonesia

The Langat River Basin in Malaysia is vulnerable to soil erosion risks because of its exposure to intensive land use activities and its topography,which primarily consists of steep slopes and mountainous ***,climate change frequently exposes this basin to drought,which negatively affects soil and water ***,recent studies have rarely shown how soil reacts to drought,such as soil ***,the purpose of this study is to evaluate the relationship between drought and soil erosion in the Langat River *** analyzed drought indices using Landsat 8 satellite images in November 2021,and created the normalized differential water index(NDWI)via Landsat 8 data to produce a drought *** used the revised universal soil loss equation(RUSLE)model to predict soil *** verified an association between the NDWI and soil erosion data using a correlation *** results revealed that the southern and northern regions of the study area experienced drought *** predicted an average annual soil erosion of approximately 58.11 t/(hm^(2)·a).Analysis of the association between the NDWI and soil erosion revealed a strong positive correlation,with a Pearson correlation coefficient of *** assumed that the slope length and steepness factor was the primary contributor to soil erosion in the study *** a result,these findings can help authorities plan effective measures to reduce the impacts of drought and soil erosion in the future.

关键词： Drought Soil erosion Normalized differential water index(NDWI) Revised universal soil loss equation(RUSLE) Langat River Basin

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IS607 TnpB is a hypercompact RNA-guided DNA endonuclease

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细胞研究（英文版） 2024年第7期34卷 473-474页

作者： Hui Yang Dinshaw J.Patel Key Laboratory of RNA Innovation Science and EngineeringShanghai Institute of Biochemistry and Cell BiologyCenter for Excellence in Molecular Cell ScienceChinese Academy of SciencesUniversity of Chinese Academy of SciencesShanghaiChina Structural Biology Program Memorial Sloan-Kettering Cancer CenterNew YorkNYUSA

The Zhiwei Huang lab report on a hypercompact IS607 TnpB protein that naturally co-occurs with the conserved RAGATH-18 RNA,thereby identifying a new family of compact RNA-guided DNA *** an IS607 TnpB-based approach for programmable genome editing in both Escher-ichia coli and human cells,combined with its structural and target-adjacent motif divergence from earlier reported IS200/IS605 TnpB systems,highlights the diversity of the non-Cas genome editor toolbox.

关键词： endonuclease hypercompact rna-guided tnpb

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Inhibiting scar formation via wearable multilayer stacked electret patch:Self-creation of persistent and customizable DC electric field for fibrogenic activity restriction

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InfoMat 2024年第3期6卷 66-80页

作者： Sung-Won Kim Sumin Cho Donghan Lee Jiyu Hyun Sunmin Jang Inwoo Seo Hyun Su Park Hee Jae Hwang Hyung-Seop Han Dae Hyeok Yang Heung Jae Chun Suk Ho Bhang Dongwhi Choi School of Chemical Engineering Sungkyunkwan UniversitySuwonRepublic of Korea Department of Mechanical Engineering(Integrated Engineering Program) Kyung Hee UniversityYonginGyeonggiRepublic of Korea Biomaterials Research Center Biomedical Research DivisionKorea Institute of Science and Technology(KIST)SeoulRepublic of Korea Department of Medical Life Sciences College of MedicineInstitute of Cell and Tissue EngineeringThe Catholic University of KoreaSeoulRepublic of Korea

Electrical stimulation has recently received attention as noninvasive treatment in skin wound healing with its outstanding biological property for clinical ***,the complexity of equipment for applying appropriate electrical stimulation remains an ongoing ***,we proposed a strategy for skin scar inhibition by providing electrical stimulation via a multilayer stacked electret(MS-electret),which can generate direct current(DC)electric field(EF)without any power supply *** addition,the MS-electret can easily control the intensity of EFs by simply stacking electret layers and maintain stable EF with the surface potential of 3400 V over 5 days owing to the injected charges on the electret *** confirmed inhibition of type 1 collagen andα-SMA expression of human dermal fibroblasts(hDFs)by 90%and 44%in vitro,indicating that the transition of hDFs to myofibroblasts was restricted by applying stable electrical *** further revealed a 20%significant decrease in the ratio of myofibroblasts caused by the MS-electret in *** findings present that the MS-electret is an outstanding candidate for effective skin scar inhibition with a battery-free,physiological electrical microenvironment,and noninvasive treatment that allows it to prevent external infection.

关键词： DC electric field dermal fibroblasts electret scar formation restriction self-creation of electrical stimulation

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Effects of Wind Stresses and Progressive Waves on Surf-Zone Currents 5

Effects of Wind Stresses and Progressive Waves on Surf-Zone ...

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5th International IEEE Novel Intelligent and Leading Emerging sciences Conference, NILES 2023

作者： Elshabrawy, Mohamed Khalid, Osama Zaki, Mamdouh Fasseh, Khaled Said, Mahmoud E. Cairo University Faculty of Engineering Giza Egypt Nile University Mechanical Engineering Program School of Engineering and Applied Sciences 12588 Egypt Giza12588 Egypt

ISBN: (纸本)9798350381030

In this paper, A numerical model based on the shallow water equations is derived to study the combined effects of wind and progressive gravity waves on surf-zone currents. The wind has temporal and spatial variations. The combined effects of spatially and temporal varying wind and waves on the surf-zone currents are investigated by considering different wave incident angles and wind stresses. Numerical results of the current distribution demonstrate the role of the basin topography, coastal configuration and the combined effect of wave radiation and wind stresses on the surf-zone currents distribution. Also, the water surface elevation emphasizes the role of the pressure gradient force due to the non-penetration condition at the coastal boundary. © 2023 IEEE.

关键词： Gravity waves

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Electrocatalysis for sustainable nitrogen management: materials innovation for sensing, removal and upcycling technologies

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Science China Chemistry 2025年第6期 2322-2342页

作者： Mei Yi Hongmei Li Minghao Xie Panpan Li Zhaoyu Jin Guihua Yu Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China College of Materials Science and Engineering and College of Chemistry Sichuan University Materials Science and Engineering Program and Walker Department of Mechanical Engineering The University of Texas at Austin

The global nitrogen cycle holds immense importance due to its crucial role in supporting life, supplying vital nutrients for plant growth, preserving environmental balance, and enabling the proper functioning of ecosystems. However, human activities frequently disrupt this cycle, leading to the accumulation of nitrates and nitrites in water bodies. This accumulation causes environmental pollution and health risks. Traditional methods for treating nitrogen pollution, including biological, physical, and chemical approaches, have inherent limitations. In recent years, electrocatalysis has emerged as a promising and sustainable approach for nitrogen management. This technology offers superior efficiency, high selectivity, and environmental *** not only enables accurate detection of nitrogen pollutants in the environment but also facilitates their conversion into harmless nitrogen gas. Moreover, recent advancements have focused on the upcycling of nitrogen pollutants into valuable compounds,such as ammonia and urea. In this comprehensive review, we showcase the applications of electrocatalysis in sustainable nitrogen management. Specifically, we highlight its use in the sensing, removal, and upcycling of major nitrogen pollutants,including nitrate（NO3-）, nitrite（NO2-）, and nitric oxide（NO）. We discuss the use of catalysts, such as Pd alloys, Cu-based, and Fe-based materials, in electrochemical sensing and catalysis. Additionally, we explore recent advancements in the conversion of nitrogen pollutants into valuable compounds like ammonia and urea. The review also addresses current challenges and future opportunities in the field, including innovations in sensor and catalyst design, as well as large-scale treatment strategies. We anticipate that these perspectives will provide profound insights for effective nitrogen pollution control and sustainable utilization of nitrogen resources.

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Superabsorbent Ternary Composite Desiccants Towards Energy-Efficient Dehumidification in Cooling Systems 13

Superabsorbent Ternary Composite Desiccants Towards Energy-E...

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13th IEEE International Conference and Expositions on Electric and Power engineering, EPEi 2024

作者： Wee, Mei Gui Vanessa Chinnappan, Amutha Ramakrishna, Seeram National University of Singapore Integrative Sciences and Engineering Program NUS Graduate School Singapore Singapore National University of Singapore Centre for Nanotechnology and Sustainability Department of Mechanical Engineering College of Design and Engineering Singapore Singapore

ISBN: (纸本)9798350356199

Desiccant-coated heat exchangers (DCHEs) enable energy-efficient dehumidification, alleviating the overall heat load on vapor compression refrigeration systems. However, conventional desiccants have limited water uptake capacities and high regeneration temperature requirements. This work presents ternary composite desiccants comprising the metal-organic framework, MIL-101(Cr) (where MIL denotes Materials Institute Lavoisier), the superabsorbent polymer polyvinyl alcohol (PVA), and hygroscopic salts for enhanced moisture sorption. Gravimetric water sorption analyses revealed that desiccants containing lithium chloride (LiCl) attained water uptakes greater than their calcium chloride- and copper (II) sulfate-containing counterparts. Subsequent cyclic tests identified the optimal MIL-101(Cr)/PVA/LiCl composite that adsorbed and desorbed moisture readily. From its water sorption isotherm, the 3MIL-101(Cr)/1PVA/1 LiCl desiccant has a water uptake capacity of 2.49g {water} g desiccant-1 - nearly double that of MIL-101(Cr) and more than nine times that of silica gel. When coated onto a prototype heat exchanger, the 3MIL-101(Cr)/1PVA/1 LiCl composite demonstrated a gravimetric water uptake more than double that of the silica gel-coated control across three adsorption-desorption cycles. Moreover, low-grade waste heat of 50°C could partially regenerate these DCHEs, leaving behind residual moisture of less than 0.5g{water} gdesiccant-1. Consequently, the 3MIL-101(Cr)/1PVA/1LiCl-coated heat exchangers are effective dehumidifiers for addressing the latent heat load towards energy savings in cooling systems. © 2024 IEEE.

关键词： Silica gel

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Measurement of ionization produced by 254 eVnr nuclear recoils in germanium

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Physical Review D 2024年第8期110卷 083043页

作者： A. R. L. Kavner I. Jovanovic Applied Physics Program Department of Nuclear Engineering and Radiological Sciences

Ionization produced by low-energy nuclear recoils is among the primary direct signatures of dark matter interactions. Despite the urgency of dark matter detection and the recent measurements of coherent elastic neutrino-nucleus scattering, detector response to nuclear recoils is not well characterized in the keVnr and sub−keVnr regime across a variety of materials. We have reperformed a measurement of the ionization produced by monoenergetic 254 eVnr nuclear recoils in Ge with improved digital electronics and additional systematic studies. Our results indicate an ionization yield of 64±8 eVee corresponding to a quenching factor of 25%±3%, greater than the 14% predicted by the Lindhard model. This ionization enhancement could greatly improve the sensitivity of high-purity Ge detectors in dark matter detection and measurement of neutrinos via coherent scattering.

关键词： Dark matter Dark matter direct detection Energy levels Neutron physics Nuclear astrophysics Particle dark matter

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