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European Control Conference, ECC 2015

作者： Martinez, Andrea Aparicio Castanos, Fernando Fridman, Leonid Electrical Engineering PhD Program Faculty of Engineering Universidad Nacional Autónoma de México Mexico Departamento de Control Automático Cinvestav IPN Mexico Faculty of Engineering Universidad Nacional Autónoma de México Mexico

ISBN: (纸本)9783952426937

In this paper we present a controller that achieves global input-to-state stabilty for a linear system of arbitrary relative degree, subjected to matched and unmatched disturbances. This controller combines the properties of a discontinous term, and a linear one, enforcing a conventional sliding mode using only partial state information. A direct and simple way of choosing the gains for this controller is also provided. © 2015 EUCA.

关键词： Controllers

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Detecting chaotic signals with nonlinear models

Detecting chaotic signals with nonlinear models

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IEEE Workshop on Statistical Signal and Array Processing

作者： A.M. Fraser Q. Cai Systems Science PhD Program and Electrical Engineering Department Portland State University Portland OR USA

Hidden Markov models of chaotic signals have been used in numerical detection experiments. For broadband deterministic chaotic signals masked with noise having identical spectra at an SNR of -15 db, the experiments found flawless receiver operating characteristics. In noisy environments the performance of models trained on noise-free signals can be improved by training on signals contaminated by noise typical of the test environment. Continuous valued scalar outputs at each discrete hidden state are modeled as Gaussians with means that depend autoregressively on previous outputs.< >

关键词： Chaos Signal detection Hidden Markov models Working environment noise Mathematical model Signal to noise ratio Testing Detectors Orbits Frequency

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Performance Evaluation of OSNR Sensitivity in DWDM-ROADM System for Data Center Interconnection

Performance Evaluation of OSNR Sensitivity in DWDM-ROADM Sys...

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IEEE International Conference on Communication, Networks and Satellite (ComNetSat)

作者： Nomarhinta Solihah Erna Sri Sugesti School of Electrical Engineering Telkom University Digital Connectivity Servcie Telkom Indonesia Bandung Indonesia PhD Program of Electrical Engineering School of Electrical Engineering Telkom University Bandung Indonesia

ISBN: (数字)9798350368086

ISBN: (纸本)9798350368093

The growing demand for handling sensitive data and high-bandwidth applications has made Data Center Interconnection (DCI) very important, as it provides high-bandwidth connectivity to improve efficiency. To address the increasing need for reliable, high-performance data transport, experts are evaluating the performance of Dense Wavelength Division Multiplexing (DWDM) integrated with Reconfigurable Optical Add-Drop Multiplexers (ROADM) system. Therefore, this study aimed to determine the optimal Optical Signal-to-Noise Ratio (OSNR) required for DWDM-ROADM system to transmit a 400 $\mathrm{Gb} / \mathrm{s}$ client interface operating at an $800 \mathrm{~Gb} / \mathrm{s}$ line-side rate. System configuration used a channel spacing of 150 GHz at a wavelength of $\mathbf{1 9 3. 1 5 0} \mathbf{~ T H z}$. Furthermore, OSNR performance evaluation was carried out by analyzing noise levels from Variable Optical Attenuator (VOA) and pre-Forward Error Correction (pre-FEC) setting. The results showed that DWDM-ROADM system required OSNR sensitivity value of $\mathbf{2 3. 1 5} \mathbf{d B}$ to ensure reliable $400 \mathrm{~Gb} / \mathrm{s}$ traffic transmission. This value was achieved at pre-FEC bit error rate (BER) of 0.02 and VOA attenuation of 8 dB, while capable of transmitting $400 \mathrm{~Gb} / \mathrm{s}$ of traffic. System performance was more stable at VOA level of 8 dB compared to 6 dB, where the traffic experiences errors at BER $1.63 \times 10^{-11}$. Finally, this study proposed a new test methodology for determining the minimum OSNR required for DWDM-ROADM system to reliably transmit $400 \mathrm{~Gb} / \mathrm{s}$ of traffic.

关键词： Performance evaluation Data centers Sensitivity Bit error rate Optical attenuators Wavelength division multiplexing Optical noise Reliability Monitoring Signal to noise ratio

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A multimodal integrative approach to model transcriptional addiction of thyroid cancer on RUNX2

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Cancer Communications 2022年第9期42卷 892-896页

作者： Emanuele Vitale Elisabetta Sauta Mila Gugnoni Federica Torricelli Veronica Manicardi Alessia Ciarrocchi Laboratory of Translational Research Azienda Unità Sanitaria Locale-IRCCS di Reggio EmiliaReggio Emilia 42123Italy Clinical and Experimental Medicine PhD Program University of Modena and Reggio EmiliaModena 41121Italy Department of Electrical Computer and Biomedical EngineeringUniversity of PaviaPavia 27100Italy

Dear Editor Aberrant gene expression sustains massive proliferation and stress adaptation under the regulation of oncogenic transcription factors(TFs)whose binding across the genome orchestrates in space and time *** dependency defines the addiction of cancer cells to TFs on top of the regulatory hierarchy governing cancer dysregulated programs[1].These factors and their dependent mechanisms are an attractive and unexplored reservoir of potential targets for new anticancer ***,while the transcriptional landscape of many cancer-supportive TFs has been revealed,this information remains purely descriptive and confined to in vitro *** foster transferability,new approaches that integrate clinical data into the transcriptional networks are needed.

关键词： addiction modal reservoir

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Towards cross-modal causal structure and representation learning 2

Towards cross-modal causal structure and representation lear...

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2nd Machine Learning for Health Symposium, ML4H 2022

作者： Mao, Haiyi Liu, Hongfu Xiaotian Dou, Jason Benos, Panayiotis V. Joint CMU-Pitt PhD Program in Computational Biology University of Pittsburgh United States Michtom School of Computer Science Brandeis University United States Department of Electrical and Computer Engineering University of Pittsburgh United States Department of Epidemiology University of Florida United States

Does the SARS-CoV-2 virus cause patients' chest X-Rays ground-glass opacities? Does an IDH-mutation cause differences in patients' MRI images? Conventional causal discovery algorithms, although well developed to uncover the cause-effect relationships on structured data, cannot elucidate causal relations between unstructured images and structured scalar variables due to the complexity of the former. In this paper, we consider causal discovery between images and structured (scalar) variables. Specifically, we derive low dimensional image representations to analyze with structured variables. We propose a two-module amortized variational algorithm named Cross-Modal Variational Causal representation and structure Learning (CMCL). CMCL jointly learns identifiable representations given a set of independent structured variables and causal relations via formulating latent representations and structured variables into a direct acyclic graph. Moreover, we further enforce counterfactual invariance/variance onto representations. We demonstrate that CMCL outperforms other related methods on synthetic datasets and validate causal relations on semi-synthetic datasets by visualization. © 2022 P.N. Argaw, E. Healey & I.S. Kohane.

关键词： Coronavirus

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Dish-Trend: Intervention Modeling Simulator That Accounts for Trend Influences

Dish-Trend: Intervention Modeling Simulator That Accounts fo...

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2021 Winter Simulation Conference, WSC 2021

作者： Andjelkovic, Stefan Miskov-Zivanov, Natasa Computational and Systems Biology Joint Carnegie Mellon University University of Pittsburgh Computational Biology PhD Program University of Pittsburgh PittsburghPA15213 United States Electrical and Computer Engineering Bioengineering Computational and Systems Biology University of Pittsburgh PittsburghPA15213 United States

ISBN: (纸本)9781665433112

Simulation on directed graphs is an important method for understanding the dynamics in the systems where connectivity graphs contain cycles. Discrete Stochastic Heterogeneous Simulator (DiSH) is one of the simulation tools with wide application, which uses regulator values to calculate state updates of regulated elements. Here we present a new simulation approach DiSH-trend which also takes into account the trends in regulating elements. We demonstrate the features of trend-based regulation, as well as hybrid regulation, which is a combination of the trend-and level-based approaches. The modeling capabilities are demonstrated on a small toy model, showcasing different functionalities. Real-world capabilities are demonstrated on a larger network model of food insecurity in the Ethiopian region Oromia. Adding trend-based regulation to models results in increased modeling flexibility, and hybrid regulation improves qualitative dynamic behavior prediction. With appropriate data, DiSH-trend becomes a powerful tool for exploring intervention strategies. © 2021 IEEE.

关键词： Directed graphs

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What Role Do Aggregators Play in Power System Security and Resilience?

What Role Do Aggregators Play in Power System Security and R...

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2023 Resilience Week, RWS 2023

作者： Matsuda-Dunn, Reiko Leddy, Laura Hotchkiss, Eliza Gautam, Mukesh Abdelmalak, Michael National Renewable Energy Laboratory GoldenCO80401 United States Colorado School of Mines Advanced Energy Systems PhD Program GoldenCO80401 United States University of Nevada at Reno Department of Electrical and Biomedical Engineering RenoNV89557 United States

ISBN: (纸本)9798350347470

Barriers to the participation of distributed energy resources (DERs) in wholesale electricity markets have limited the use of DERs for power system security and resilience. In September 2020, the Federal Energy Regulatory Commission (FERC) approved an order to reduce these barriers. FERC Order No. 2222 enables the participation of DER aggregators in wholesale electricity markets. DERs include renewable generation and technologies that support the integration of renewable generation by increasing grid flexibility and resilience. Requiring wholesale energy markets to allow DER aggregator participation provides a path for DERs to become competitive in these markets. As the contribution from aggregated DERs continues to increase, the aggregator's role in supporting grid security and resilience will become more critical. This paper reviews work that demonstrates how DER aggregators can provide resilience support through technical capabilities, operational strategies, and secure communication architectures. Socioeconomic influences and impacts of aggregators, including implications for social resilience, are presented. In surveying the current state-of-the-art across different but interconnected topics, we illustrate how aggregators can be power system participants that enhance grid security. There is no one-size-fits-all approach to enhancing resilience in a power grid that includes a growing cohort of DER aggregators, but there are many options for aggregators to contribute to a more resilient and secure power grid. © 2023 IEEE.

关键词： Power markets

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A New Fuzzy Logic Application To Search the Optimal Step Size For NLMS Beamforming

A New Fuzzy Logic Application To Search the Optimal Step Siz...

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International Conference on Telecommunications and Signal Processing

作者： Walter Orozco-Tupacyupanqui Hector Perez-Meana Mariko Nakano-Miyatake Graduated PhD program in Communication and Electronic Engineering National Polytechnic Institute Graduate studies and Research section of The Mechanical and Electrical Engineering School National Polytechnic Institute

ISBN: (纸本)9781479984992

This paper proposes a new application based on fuzzy logic to search the optimal Step Size of the Normalized Least Mean Square (NLMS) algorithm for beamforming systems. The searching of the step size depends on the fuzzy inference results of an estimation of the final value of the cost function (J_E) instead of using its instantaneous value. The update of the step-size is performed outside of the adaptive algorithm and given it feedback by the fuzzy inference system;therefore the step-size is still fixed for the NLMS algorithm but variable for the complete searching scheme. Simulation experimental results show that a useful approximation of the optimal step-size can be obtained for different conditions of signal-to-noise plus interference ratios (SINR) and the minimization of the mean square error for the adaptive beamforming algorithm is also achieved.

关键词： Adaptive linear array Communication systems Fuzzy inference systems Normalized least mean square (NLMS) algorithm Smart antennas

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Probabilistic Power Flow Analysis Based on Low Rank Approximation and Principle Component Analysis

Probabilistic Power Flow Analysis Based on Low Rank Approxim...

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Conference on Power, Energy and Innovations (ICPEI)

作者： Jirasak Laowanitwattana Sermsak Uatrongjit PhD’s Degree Program in Electrical Engineering Faculty of Engineering Chiang Mai University Chiang Mai Thailand Faculty of Engineering Chiang Mai University Chiang Mai Thailand

Probabilistic power flow (PPF) analysis is usually applied for evaluating the effects of uncertain parameters on power system performances. This paper presents a technique to enhance the arbitrary polynomial chaos expansion (aPCE) based PPF analysis technique when applying to system with many uncertain parameters. The proposed method represents a power system response as low rank approximation (LRA). In addition, the principle component analysis (PCA) is applied to reduce the number of uncertain parameters and also de-correlate them. This combination enables the proposed method to perform PPF of the power system having large number of uncertain parameters. Based on preliminary numerical results on the modified IEEE 57-bus system, it can be noticed that the proposed modified method is able to find accurate statistical characteristics of the responses but uses less computation time compared to the MCS based PPF analysis.

关键词： Chaos Technological innovation Probabilistic logic Power systems Principal component analysis Load flow analysis

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Efficient photodecoloration catalysts, based on ZnO nanoparticles coated in two steps on glass substrates 19

Efficient photodecoloration catalysts, based on ZnO nanopart...

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19th International Conference on electrical engineering, Computing Science and Automatic Control, CCE 2022

作者： Dominguez-Flores, R. Estrella-Suarez, M.V. Vega-Perez, J. Maldonado, A. Centro de Investigación y de Estudios Avanzados Del I.P.N. Nanoscience and Nanotechnology PhD Program Mexico City Mexico Instituto Tecnológico de Tlalnepantla Department of Electrical Engineering State of Mexico Mexico Sees Centro de Investigación y de Estudios Avanzados Del I.P.N. Department of Electrical Engineering Mexico City Mexico

ISBN: (数字)9781665455084

ISBN: (纸本)9781665455084

ZnO, ZnO:Ag and ZnO:Cu thin coatings were prepared on glass substrates by an innovative dip-coating technique coupled with the addition of ZnO nanoparticles and their structural, morphological and optical properties were investigated. X-ray Diffraction (XRD) analysis revealed the coatinǵs hexagonal wurtzite phase with a preferred (002) plane orientation. The mean crystallite size calculated on the basis of the Debye-Scherrer model was 31 nm and a small dislocation density of 1.04×10-3 nm-2 was obtained, indicating the existence of few lattice defects and good crystallinity. The atomic force microscopy (AFM) observation showed the coatinǵs granular nature composed of spherical nanoparticles with almost homogeneous distribution. The average transmittance in the visible región is around 75-80% and optical bandgap, 3.25 eV, respectively were obtained for our coatings indicating their suitability in photocatalytic applications. UV-vis spectrometry reveals a methylene blue (MB) dye decoloration efficiency of 96% after 180 min using ZnO:Ag (3:3 layers) film. © 2022 IEEE.

关键词： II-VI semiconductors

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