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Conference of the North American Fuzzy Information Processing Society - NAFIPS

作者： O. Takata S. Miyamoto K. Umayahara Doctoral Program in Engineering University of Tsukuba Tsukuba Ibaraki Japan Institute of Engineering Mechanics and Systems University of Tsukuba Tsukuba Ibaraki Japan School of Knowledge Science Japan Advanced Institute of Science and Technology Ishikawa Japan

Fuzzy c-means is well-known among the various methods of fuzzy cluster analysis. L/sub 1/-based fuzzy c-means has also been studied in recent years. This paper discusses the L/sub 1/-based fuzzy c-means of data with fuzzy uncertainties. The data unit is supposed to be the Cartesian product of fuzzy numbers. The metric between a data unit with uncertainty and a cluster center is defined using minimum and maximum distances. The fuzzy c-means algorithm is an alternative procedure for the optimization of the cluster center and the fuzzy set membership, while the solution of the cluster center for uncertain data cannot be obtained directly. An algorithm for the solution of cluster centers based on the L/sub 1/ metric for uncertain data is developed in this paper. Using this algorithm, an exact alternate optimization procedure is obtained. Numerical examples show that the results for uncertain data are different from the results for data without uncertainties.

关键词： Uncertainty Clustering algorithms Data engineering Knowledge engineering Optimization methods Euclidean distance Entropy Fuzzy systems systems engineering and theory

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Building Composite Performance Index for Broadband Internet Customer Experience

Building Composite Performance Index for Broadband Internet ...

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IEEE International Symposium on Consumer Electronics (ISCE)

作者： Nurdianto Moses Laksono Singgih I Ketut Gunarta Doctoral Program in Technology Management Interdisciplinary School of Management and Technology Institut Teknologi Sepuluh Nopember Surabaya Indonesia Department of Industrial and Systems Engineering Institut Teknologi Sepuluh Nopember Surabaya Indonesia

ISBN: (数字)9798350365191

ISBN: (纸本)9798350365207

The global trend in broadband internet services reveals an increased focus on reliability, customer service, and integrating new technologies like IoT, 5G, or FMC. Customer service is primarily determined by network quality and reliability, price, and the quality of customer support provided by ISPs. Meanwhile, existing network quality measurement methods often involve numerous parameters, ranging from download speed and server response time to video streaming quality, each providing a separate insight into aspects of user experience. Therefore, the importance of the composite index method is becoming increasingly relevant. This method allows the integration of these various parameters into a single, easily understandable integrated index, simplifying complex data analysis into a more concise and interpretable form. As a result of this approach, internet service providers can more effectively monitor and enhance the customer experience and the overall quality of their services for various purposes with a single composite parameter value, providing reassurance and confidence in their operations.

关键词： Customer services Web and internet services Decision making Market research User experience Time measurement Broadband communication Indexes Monitoring Indexing

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Guest editorial: Latin American perspectives on sustainability in higher education

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International Journal of Sustainability in Higher Education 2023年第2期24卷 233-234页

作者： Izabela Simon Rampasso Rosley Anholon Osvaldo Luiz Gonçalves Quelhas Luis Velazquez Claudia Mac-Lean Departamento de Ingeniería Industrial Universidad Católica del Norte Antofagasta Chile School of Mechanical Engineering State University of Campinas Campinas Brazil Master Program in Management Systems and Doctoral Program in Sustainable Management Systems Federal Fluminense University Niterói Brazil Department of Industrial Engineering Division of Engineering University of Sonora Hermosillo Mexico GAIA Antarctic Research Center Universidad de Magallanes Punta Arenas Chile

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Sonar spectrum recognition chip designed by evolutionary algorithm

Sonar spectrum recognition chip designed by evolutionary alg...

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International Joint Conference on Neural Networks (IJCNN)

作者： M. Yasunaga T. Nakamura I. Yoshihara Institute of Information Sciences and Electronics University of Tsukuba Tsukuba Ibaraki Japan Doctoral Program of Engineering University of Tsukuba Tsukuba Ibaraki Japan Large Scale Systems Stage Engineering Laboratory Graduate School of Engineering University of Tohoku Sendai Miyagi Japan

An evolutionary design methodology for sonar spectrum recognition chip is proposed and the prototype chip is developed. In the design, sonar spectrum data are transformed to truth-tables and the truth-tables are evolved to obtain generalization capability by using genetic algorithms. Digital circuits are designed by synthesizing the evolved truth-tables. Parallelism in the data can be embedded in the circuits directly by this direct hardware implementation technique of the sonar spectrum data. The circuit size of the developed chip was 4,134 gates, and this was small enough to be implemented onto a standard FPGA (field programmable gate array) chip. Operation speed of the chip was less than 1.0 micro-second per spectrum. Moreover the chip achieved the recognition accuracy of 91.7%, which was higher than those in the backpropagation and the k-NN algorithm.

关键词： Sonar Algorithm design and analysis Evolutionary computation Field programmable gate arrays Design methodology Prototypes Genetic algorithms Digital circuits Circuit synthesis Hardware

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An efficient heuristic for routing and wavelength assignment in optical WDM networks

An efficient heuristic for routing and wavelength assignment...

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IEEE International Conference on Communications (ICC)

作者： Yongbing Zhang K. Taira H. Takagi S.K. Das Institute of Policy and Planning Sciences University of Tsukuba Tsukuba Ibaraki Japan Doctoral Program in Systems and Information Engineering University of Tsukuba Tsukuba Ibaraki Japan Department of Computer Science and Engineering University of Texas Arlington TX USA

ISBN: (纸本)0780374002

We propose an efficient heuristic algorithm that sets up and releases lightpaths for connection requests dynamically. We partition the routing and wavelength assignment (commonly known as RWA) problem into two subproblems and solves both of them using a well-known shortest path routing algorithm. For solving the routing subproblem, an auxiliary graph is created whereby the nodes and links in the original network are transformed to the edges and vertices, respectively, and the availability of each wavelength on the input and output links of a node as well as the number of available wavelength converters are taken into account in determining the weights of edges. Furthermore, for solving the wavelength assignment subproblem, an auxiliary graph is also utilized and the cost for wavelength conversion is taken into consideration in the edge weight function. A distinguished feature of our algorithm is that it employs more accurate network information on the availability of both the wavelengths and the wavelength converters than the existing algorithms in deciding the routing and the wavelength assignment. Simulation results show that our algorithm performs much better than previously proposed algorithms with comparable computation time, especially when the number of wavelengths is large while the number of converters at each node is limited.

关键词： Wavelength routing Wavelength assignment Optical fiber networks WDM networks Optical wavelength conversion Partitioning algorithms Heuristic algorithms Cost function Availability Computational modeling

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Theory-guided randomized neural networks for decoding medication-taking behavior

Theory-guided randomized neural networks for decoding medica...

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2021 IEEE EMBS International Conference on Biomedical and Health Informatics, BHI 2021

作者： Kaur, Navreet Gonzales, Manuel Alcaraz, Cristian Garcia Barnes, Laura E. Wells, Kristen J. Gong, Jiaqi Department of Engineering Systems and Environment University of Virginia VA22904 United States SDSU UC San Diego Joint Doctoral Program in Clinical Psychology San DiegoCA92120 United States Department of Psychology San Diego State University San DiegoCA92182 United States Department of Computer Science The University of Alabama TuscaloosaAL35487 United States

ISBN: (纸本)9781665403580

Long-term endocrine therapy (e.g. Tamoxifen, aromatase inhibitors) is crucial to prevent breast cancer recurrence, yet rates of adherence to these medications are low. To develop, evaluate, and sustain future interventions, individual-level modeling can be used to understand breast cancer survivors' behavioral mechanisms of medication-taking. This paper presents interdisciplinary research, wherein a model employing randomized neural networks was developed to predict breast cancer survivors' daily medication-taking behavior based on their survey data over three time periods (baseline, 4 months, 8 months). The neural network structure was guided by random utility theory developed in psychology and behavioral economics. Comparative analysis indicates that the proposed model outperforms existing computational models in terms of prediction accuracy under conditions of randomness. © 2021 IEEE

关键词： Diseases

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Information technology and the terrorist threat

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Survival 1997年第3期39卷 135-155页

作者： Hoo, Kevin Soo Goodman, Seymour Greenberg, Lawrence [a] A researcher at the Center for International Security and Arms Control (CISAC) Stanford University CA [b] Doctoral candidate in Engineering-Economic Systems [c] Director of the IT and National Security Program CISAC [d] Professor of Management Information Systems University of Arizona Tucson AZ [e] General Counsel for The Motley Fool Inc.

Present conditions do not seem to favor information technology terrorism, but the current trends of increasing societal vulnerability and decreasing technical difficulty might encourage it in the future.

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Trajectory formation of arm movement by a single particle approximation strategy inspired from biological reaching movement

Trajectory formation of arm movement by a single particle ap...

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IEEE International Workshop on Intelligent Robots and systems (IROS)

作者： H. Toda Y. Sankai Institude of Engineering Mechanics and Systems University of Tsukuba Japan Tsukuba Daigaku - Tsukuba Campus Kasuga Chiku Tsukuba Ibaraki JP Doctoral Program in Eng. Tsukuba Univ. Ibaraki Japan

It is clear that many creatures including human being and macaque have dealt with multi joint arm movement by taking a special control strategy from many biological experiments. These studies said that when moving the hand between pairs of targets, subjects tended to generate roughly straight hand trajectories with single-peaked, bell-shaped speed profiles. For explaining this experimental result, many of movement control strategies have been proposed so far, though, there are many of the problems for resolving multi-joint arm control. Kawato said that the major problem is collected into "two ill-posed" problems. First is the way of selecting a single trajectory from the possible movement. Second is the control problem for realizing the planned trajectory by deciding each of the joint torque and for reaching the whole actuator system to an objective position. First of all, we argue that what advantage a creature gets by taking a bell-shaped speed profiles control strategy form the viewpoint of simple single particle movement experiments and discuss the way of realizing the control procedure. In this paper, we proposed a new control strategy which the speed profiles of the end-effector is modified as the bell-shaped form actively. We regard the end-effector of a multi joint system as a kind of single particle system in this method. By the subsumption, the control problem of the multi-joint system movement can be simplified. And we will show that the proposed strategy accomplish the control of a two-link arm reaching movement, and after that, realize a standing up movement of human model by constructing four link systems which use the physical parameter of human being.

关键词： Humans Control systems Central nervous system Muscles systems engineering and theory Biological control systems Torque control Centralized control Kinematics Strategic planning

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Single-cell transcriptomics uncovers EGFR signaling-mediated gastric progenitor cell differentiation in stomach homeostasis (vol 14, 3750, 2023)

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NATURE COMMUNICATIONS 2023年第1期14卷 1-16页

作者： Takada, Hitomi Sasagawa, Yohei Yoshimura, Mika Tanaka, Kaori Iwayama, Yoshimi Hayashi, Tetsutaro Isomura-Matoba, Ayako Nikaido, Itoshi Kurisaki, Akira Laboratory of Stem Cell Technologies Graduate School of Science and Technology Nara Institute of Science and Technology Takayama-cho Ikoma Nara Japan Laboratory for Bioinformatics Research RIKEN Center for Biosystems Dynamics Research Wako Saitama Japan Department of Functional Genome Informatics Biological Data Science Medical Research Institute Tokyo Medical and Dental University Bunkyo Tokyo Japan Master’s/Doctoral Program in Life Science Innovation (Bioinformatics) Degree Programs in Systems and Information Engineering Graduate School of Science and Technology University of Tsukuba Tsukuba Ibaraki Japan

Defects in gastric progenitor cell differentiation are associated with various gastric disorders, including atrophic gastritis, intestinal metaplasia, and gastric cancer. However, the mechanisms underlying the multilineage differentiation of gastric progenitor cells during healthy homeostasis remain poorly understood. Here, using a single-cell RNA sequencing method, Quartz-Seq2, we analyzed the gene expression dynamics of progenitor cell differentiation toward pit cell, neck cell, and parietal cell lineages in healthy adult mouse corpus tissues. Enrichment analysis of pseudotime-dependent genes and a gastric organoid assay revealed that EGFR-ERK signaling promotes pit cell differentiation, whereas NF-κB signaling maintains gastric progenitor cells in an undifferentiated state. In addition, pharmacological inhibition of EGFR in vivo resulted in a decreased number of pit cells. Although activation of EGFR signaling in gastric progenitor cells has been suggested as one of the major inducers of gastric cancers, our findings unexpectedly identified that EGFR signaling exerts a differentiation-promoting function, not a mitogenic function, in normal gastric homeostasis.

关键词： Adult stem cells Stem-cell differentiation Stem-cell niche

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Initial Exploration and Understanding of Parameters for Successful Enterprise Architecture Implementation

Initial Exploration and Understanding of Parameters for Succ...

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International Conference on ICT For Smart Society (ICISS)

作者： Dyna Marisa Khairina Purwanto Purwanto Dinar Mutiara Kusumo Nugraheni Doctoral Program in Information Systems School of Postgraduate Studies Universitas Diponegoro Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Diponegoro Semarang Indonesia Department of Informatics Faculty of Science and Mathematics Universitas Diponegoro Semarang Indonesia

ISBN: (数字)9798350389654

ISBN: (纸本)9798350389661

This study provides an initial exploration and further understanding of the factors that are parameters in evaluating the success of Enterprise Architecture (EA) implementation. An evaluation process is needed to ensure that the EA project implementation provides effectiveness, efficiency, and feasibility of the EA information system as well as assessing previous project experience to avoid future EA project risks. The research aims to present a Systematic Literature Review based on the stages of identification, screening, eligibility, and inclusion so that 14 main articles are selected for review with strong actual relevance. The study results provide insights and references that can be used to further explore key factors in evaluating the success of EA implementation in the future. It was found that there were ten factors that most influenced the evaluation of the success of EA implementation and it was concluded that two potential factors were the most influential and required further exploration in evaluating the success of EA implementation which could be applied in various sectors/dimensions. This study contributes as an initial reference for overcoming problems in investigating and exploring the factors that influence the success of EA implementation as an effort to assess the success of achieving future organizational goals.

关键词： Bibliographies Testing Information systems

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