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arXiv 2024年

作者： Falkensteiner, Sebastian Ovchinnikov, Alexey Sendra, J. Rafael Max Planck Institute for Mathematics in The Sciences Leipzig Germany Department of Mathematics CUNY Queens College Ph.D. Programs in Mathematics and Computer Science CUNY Graduate Center New York United States Department of Quantitative Methods CUNEF-University Spain

Structural global parameter identifiability indicates whether one can determine a parameter’s value in an ODE model from given inputs and outputs. If a given model has parameters for which there is exactly one value, such parameters are called globally identifiable. Given an ODE model involving not globally identifiable parameters, first we transform the system into one with locally identifiable parameters. As a main contribution of this paper, then we present a procedure for replacing, if possible, the ODE model with an equivalent one that has globally identifiable parameters. We first derive this as an algorithm for one-dimensional ODE models and then reuse this approach for higher-dimensional *** Codes 93C15, 93B25, 93B30, 34A55, 14E08, 14M20, 14Q20, 12H05, 92B05 © 2024, CC BY-NC-SA.

关键词： Observability

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Generalized Encouragement-Based Instrumental Variables for Counterfactual Regression

arXiv

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arXiv 2024年

作者： Wu, Anpeng Kuang, Kun Xiong, Ruoxuan Chen, Xiangwei Sun, Zexu Wu, Fei Zhang, Kun College of Computer Science and Technology Zhejiang University China Department of Quantitative Theory and Methods Emory University Atlanta United States Gaoling School of Artificial Intelligence Renmin University of China China Carnegie Mellon University United States

In causal inference, encouragement designs (EDs) are widely used to analyze causal effects, when randomized controlled trials (RCTs) are impractical or compliance to treatment cannot be perfectly enforced. Unlike RCTs, which directly allocate treatments, EDs randomly assign encouragement policies that positively motivate individuals to engage in a specific treatment. These random encouragements act as instrumental variables (IVs), facilitating the identification of causal effects through leveraging exogenous perturbations in discrete treatment scenarios. However, real-world applications of encouragement designs often face challenges such as incomplete randomization, limited experimental data, and significantly fewer encouragements compared to treatments, hindering precise causal effect estimation. To address this, this paper introduces novel theories and algorithms for identifying the Conditional Average Treatment Effect (CATE) using variations in encouragement. Further, by leveraging both observational and encouragement data, we propose a generalized IV estimator, named Encouragement-based Counterfactual Regression (EnCounteR), to effectively estimate the causal effects. Extensive experiments on both synthetic and real-world datasets demonstrate the superiority of EnCounteR over existing methods. Copyright © 2024, The Authors. All rights reserved.

关键词： Regression analysis

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Comment Analyzer: A Tool for Analyzing Comment Sets and Thread Structures of News Articles

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IEEE Transactions on Visualization and computer Graphics 2025年 PP卷 PP页

作者： Kiesel, Dora Riehmann, Patrick Engelmann, Ines Ramezani, Hanna Froehlich, Bernd Bauhaus Universitat Weimar Virtual Reality and Visualization Group Germany Jönköping University Computer Science and Informatics Department School of Engineering Sweden Friedrich Schiller University Jena Empirical Methods of Communication Science Germany German Federal Agency for Civic Education Germany Bauhaus-Universitat Weimar Virtual Reality and Visualization Group Germany

The lack of visually guided data exploration tools limits the scope of research questions communication scientists are able to study. The Comment Analyzer steps in where traditional statistical tools fail when it comes to researching the commenting behavior of news article readers. The basis of such an analysis are comment-thread corpora in which comments are tagged with various deliberative quality indicators as well as political stance. Our analysis tool provides a visual querying system for the exploration and analysis of such corpora and allows social scientists to gain insights into the distributions and relations between comment attributes, the homogeneity of thread sets, frequent thread structures and changes in comment qualities over the course of a single but in particular of multiple threads at once. We developed the tool in close collaboration with communication scientists in a user-centered approach. The system has proven its utility in thorough reviews with the communication scientists, by corroborating existing findings in the literature but particularly by provoking and answering new research questions. Final reviews with five independent experts confirmed these observations and revealed the potential of the Comment Analyzer for other datasets currently being created and analyzed in the communication sciences © 1995-2012 IEEE.

关键词： Graph Visualization Information Visualization Multi-Attribute Aggregation Set-based Visualization Text Visualization Tree Aggregation Visual Text Analytics

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Digital Competence of Specialists: Development Technology in a Higher Education Institution

Digital Competence of Specialists: Development Technology in...

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International Conference on Advanced computer Information Technologies (ACIT)

作者： Halyna Henseruk Serhii Martyniuk Oksana Vasylenko Yuliia Henseruk Viktor Henseruk Valerii Habrusiev Department of Computer Science and Teaching Methods Ternopil Volodymyr Hnatiuk National Pedagogical University Ternopil Ukraine Department of Theory and Practice of Translation Anhalt University of Applied Sciences Köthen Germany Department of English Philology and Methods of Teaching English Ternopil Volodymyr Hnatiuk National Pedagogical University Ternopil Ukraine Department of Pedagogy and Management of Education Ternopil Volodymyr Hnatiuk National Pedagogical University Ternopil Ukraine

ISBN: (数字)9798350350043

ISBN: (纸本)9798350350050

In a digital society, professionals who are professionally competent and have a variety of skills are increasingly in demand. Digital skills are important and form the basis of the digital competence of specialists. The purpose of the study is to analyse regulatory documents in the context of the development of digital competence of specialists, to develop, substantiate and implement the trajectory of its development in a higher education institution. A questionnaire for self-assessment by bachelor’s and master’s students and practitioners of their own level of digital competence has been developed, which contains 12 descriptors and their detailed description. Based on the analysis of regulatory documents and the survey results, the author outlines the need to include disciplines in the training programmes for specialists that would contribute to the development of their digital competence. The authors have developed a technology for the system of development of digital competence of specialists. The design stage is substantiated, which includes three blocks: academic disciplines, self-education and professional self-development. The role of professional disciplines in digital technologies in the development of digital competence of specialists is determined. The study emphasises that continuity and continuity in the training of specialists in the context of the use of digital technologies in various aspects of activity is important in this development.

关键词： Training Surveys Text analysis Trajectory Information technology

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A Two-Layer Trilateral Teleoperation Architecture for Mentoring in Surgical Training

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IFAC-PapersOnLine 2021年第19期54卷 267-274页

作者： Marco Minelli Filippo Loschi Federica Ferraguti Cristian Secchi Department of Sciences and Methods of Engineering University of Modena and Reggio Emilia Italy Department of Computer Science University of Verona Italy

In this paper we propose a novel trilateral dual-master-single-slave teleoperation control architecture that can be used for the training of novice surgeons in surgical procedures. Starting from the concept of energy tank, we propose a flexible and stable trilateral interconnection over a delayed communication channel between the masters and the slave. Exploiting the flexibility provided by the controller, we design a training strategy for novice surgeons. The proposed architecture is experimentally validated.

关键词： Teleoperation Stability of nonlinear systems Passivity-based control Telepresence Robots manipulators

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Biometric Authentification Comparison: Toward Secure Human Recognition

Biometric Authentification Comparison: Toward Secure Human R...

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International Conference on Computational science and Computational Intelligence (CSCI)

作者： Fatma Mallouli Nesrine Khelifi Aya Hellal Imen Ferjani Nada Chaabane Mejda Dakhlaoui Houda Chamakhi Deanship of Preparatory Year and Supporting Studies Computer Science Department Applied College Financial Sciences Department Applied College Department of Quantitative Methods College of Business Administration Imam Abdulrahman Bin Faisal University Dammam Saudi Arabia

ISBN: (数字)9798350361513

ISBN: (纸本)9798350372304

Since the pandemic's announcement, covid-19 has hit almost all businesses. Regular office jobs and commercial meetings are changed and adopt the fully online new technology tools. To avoid coworkers' interaction with each other in all departments and face-to-face contact in person, all sectors of industry and all vital domains adopt the fully digital approach. The extreme need for new technology based on information systems leads users to adopt secure tools to face the pandemic. to protect the integrity and confidentiality of data. Biometric Technologies are rapidly becoming the ideal solution to solve lots of problems including human identification. Biometrics are declared to offer the security and accuracy of human being identification and authentication. However, each biometric check involves a series of processes that are interspersed with choices and contingencies on several levels. Additionally, there are underlying normative presumptions about human anatomy that have extremely severe effects on how biometric systems work. Several Recent research analyses have clarified gendered and racist prejudices as the cause of biometric system failures. The production, usage, and problematization of bodily differences during the research and design stages of biometric systems, as well as during their use, are highlighted by a more nuanced understanding of how biometrics and bodily differences intersect. Yet, every biometric check consists of a process with many intermediate steps, introducing contingency and choice on many levels. In addition, there are underlying normative assumptions regarding human bodies that affect the functioning of biometric systems in highly problematic ways. In recent social science studies, the failures of biometric systems have been interpreted as gendered and racialized biases. A more nuanced understanding of how biometrics and bodily differences intersect draws attention to how bodily differences are produced, used, and problematized during

关键词： Accuracy Biometrics (access control) Pandemics Scientific computing Contingency management Social sciences Production

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Enhancing Password Security: Analyzing Password Management Practices Among IT Students

Enhancing Password Security: Analyzing Password Management P...

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International IEEE Conference and Workshop: Óbuda on Electrical and Power Engineering (CANDO-EPE)

作者： Anita Mihalovicsne Kollar Jozsef Katona Department of Software Development and Application Institute of Computer Engineering University of Dunaujvaros Dunaujvaros Hungary Institute of Electronics and Communication Systems Kando Kalman Faculty of Electrical Engineering Obuda University Budapest Hungary GAMF Faculty of Engineering and Computer Science John Von Neumann University Kecskemet Hungary Department of Applied Quantitative Methods Faculty of Finance and Accountancy Budapest Business University Budapest Hungary

ISBN: (数字)9798331531119

ISBN: (纸本)9798331531126

Today, with the digital world in its full swing, strong password management is key to protecting sensitive information from both internal and external threats. The current research explores the passwords managing behavior of the IT students at the University of Dunaujvaros. A survey made in May 2024 questioned 68 students, 59 males and 9 females, about behaviors such as using passwords with complexity, not repeating them for multiple accounts or machines, changing them regularly, and which applications they use for password management. The findings have depicted that, as a whole, students appear to be moderately sensitive about the password security instructions. Nonetheless, most continue to indulge in unsafe practices, including easily remembered or weak passwords and infrequent password changes. Furthermore, approximately half of the responders use password management applications, indicating room for significant improvement in the future. The results suggest that intervention and special education measures should be taken to enhance the practice of password security among future IT experts. This research has good potential to contribute toward strategies designed for people behaving safely in password management, and hence promote a secure digital environment.

关键词： Surveys Continuing education Power engineering Correlation Engineering profession Education Passwords Complexity theory Security Protection

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Contrastive Balancing Representation Learning for Heterogeneous Dose-Response Curves Estimation

arXiv

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arXiv 2024年

作者： Zhu, Minqin Wu, Anpeng Li, Haoxuan Xiong, Ruoxuan Li, Bo Yang, Xiaoqing Qin, Xuan Zhen, Peng Guo, Jiecheng Wu, Fei Kuang, Kun Department of Computer Science and Technology Zhejiang University China Mohamed bin Zayed University of Artificial Intelligence United Arab Emirates Center for Data Science Peking University China Department of Quantitative Theory and Methods Emory University United States School of Economics and Management Tsinghua University China Didi Chuxing China

Estimating the individuals' potential response to varying treatment doses is crucial for decision-making in areas such as precision medicine and management science. Most recent studies predict counterfactual outcomes by learning a covariate representation that is independent of the treatment variable. However, such independence constraints neglect much of the covariate information that is useful for counterfactual prediction, especially when the treatment variables are continuous. To tackle the above issue, in this paper, we first theoretically demonstrate the importance of the balancing and prognostic representations for unbiased estimation of the heterogeneous dose-response curves, that is, the learned representations are constrained to satisfy the conditional independence between the covariates and both of the treatment variables and the potential responses. Based on this, we propose a novel Contrastive balancing Representation learning Network using a partial distance measure, called CRNet, for estimating the heterogeneous dose-response curves without losing the continuity of treatments. Extensive experiments are conducted on synthetic and real-world datasets demonstrating that our proposal significantly outperforms previous methods. Copyright © 2024, The Authors. All rights reserved.

关键词： Decision making

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Screening the nonlinear optical properties of reference esters

引用

Journal of Molecular Liquids 2025年 425卷

作者： Ariche, Berkane Hadji, Djebar Baroudi, Benamar Bensafi, Toufik Department of Chemistry Faculty of Sciences University of Saida – Dr. Moulay Tahar Saida20000 Algeria Modeling and Calculation Methods Laboratory University of Saida – Dr. Moulay Tahar B.P. 138 Saida20002 Algeria Department of Chemistry Faculty of Exact Sciences and Computer Science University of Hassiba Benbouali Chlef02000 Algeria

In this investigation we report results on the linear and nonlinear optical properties such as the dipole moment, polarizability, total first hyperpolarizability βtot, electric field-induced second harmonic generation β//, hyper-Rayleigh scattering first hyperpolarizability βHRS, the depolarization ratio DR, and the mean second hyperpolarizability γ of eight esters using density functional theory at the B3LYP, CAM-B3LYP, PBE0, M06, and M06-2X functionals. Moderate total first hyperpolarizability βtot up to 269.09, 165.21, and 122.87 a.u. has been obtained for the methyl salicylate, ethyl benzoate and butyl acetate, respectively. The βtot values of the methyl salicylate are nearly six times higher than those reported for the urea. An inverse relationship was achieved between the second-order molecular hyperpolarizability βtot and the band gap Eg and between the βHRS and β//. Strategies to improve the nonlinear optical activity of these esters are outlined. This quantum chemical exploration of some esters with moderate to high hyperpolarizabilities will provide more insights into exploring novel nonlinear optical materials and progressing in technologies that rely on manipulating and controlling light for various purposes, such as optical signal processing, photonic and photorefractive devices. © 2025 Elsevier B.V.

关键词： Dipole moment Ester Hyperpolarizability Nonlinear optics Polarizability

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Model for Analysis of High-Frequency Modulated Random Signals 13

Model for Analysis of High-Frequency Modulated Random Signal...

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13th International Conference on Advanced computer Information Technologies, ACIT 2023

作者： Javorskyj, Ihor Yuzefovych, Roman Lychak, Oleh Semenov, Pavlo Sliepko, Roman Romanyshyn, Yulia Karpenko Physico-mechanical Institute of NAS of Ukraine Department of Methods and Facilities for Acquisition and Processing Diagnostic Signals Lviv Ukraine Bydgoszcz University of Science and Technology Institute of Telecommunication and Computer Sciences Bydgoszcz Poland Lviv Polytechnic National University Department of Applied Mathematics Lviv Ukraine Odesa National Maritime University Department of Hoisting and Transport Machines and Engineering of Port Technological Equipment Odesa Ukraine Ivano-Frankivsk National Technical University of Oil and Gas Department of Records Management and Information Activity Ivano-Frankivsk Ukraine

The use of the Hilbert transform for the analysis of periodically non-stationary random signals (PNRSs), whose carrier harmonics are modulated by jointly stationary high-frequency random processes is discussed. A representation of the signal in the form of a superposition of high-frequency components is obtained and it is shown that these components are jointly periodically non-stationary random processes. The properties of the band-pass filtered signals are examined, and it is shown that band-pass filtering can reduce both the number of signal variance cyclic harmonics and their amplitudes. We show that it is possible to extract the quadratures of narrow-band high-frequency modulation processes using the Hilbert transform. © 2023 IEEE.

关键词： Random processes

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