- 标题
- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2019 IEEE 2nd International Conference on Information Communication and Signal Processing (ICICSP) - Weihai, China (2019.9.28-2019.9.30)] 2019 IEEE 2nd International Conference on Information Communication and Signal Processing (ICICSP) - Research on the Information and Communication System Architecture for Global Analysis of Wide Area Distributed Photovoltaic Power Industry
摘要： Mass customization enables the creation of personalized products that fulfill the features desired by specific customers. In this context, variability models are used to specify which configurable features are supported and which constraints among the features must be satisfied to guarantee the validity of the derived products. As the market demand grows and evolves, variability models become increasingly complex. In such entangled models, it is hard to identify which features are absolutely essential or dispensable because they are required to be included or excluded from all the possible products, respectively. This paper exposes the limitations of existing approaches to automatically detect those features and provides an algorithm that efficiently performs such detection.
关键词： Mass customization,dead feature,variability model,feature model,configuration model,core feature,product platform
更新于2025-09-19 17:13:59
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[IEEE 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) - Xiamen, China (2019.12.17-2019.12.20)] 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) - Parallel Computation Technology for Distributed Optical Fiber Sensing System
摘要： The gradual changes that occur in the human voice due to aging create challenges for speaker verification. This study presents an approach to calibrating the output scores of a speaker verification system using the time interval between comparison samples as additional information. Several functions are proposed for the incorporation of this time information, which is viewed as aging information, in a conventional linear score calibration transformation. Experiments are presented on data with short-term aging intervals ranging between 2 months and 3 years, and long-term aging intervals of up to 30 years. The aging calibration proposal is shown to offset the decreased discrimination and calibration performance for both short- and long-term intervals, and to extrapolate well to unseen aging intervals. Relative reductions in C(cid:2)(cid:2)r (cost of log-likelihood ratio) of 1–4% and 10–43% are obtained at short- and long-term intervals, respectively. Assuming that a system has knowledge of the time interval between samples under comparison, this approach represents a straightforward means of compensating for the detrimental impact of aging on speaker verification performance.
关键词： speaker variability,quality measures,Aging,calibration,speaker verification
更新于2025-09-19 17:13:59
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Adiabatic Frequency Conversion in Non-Centrosymmetric High-Q Optical Microresonators
摘要： The collection of long-term health data is accelerating with the advent of portable/wearable medical devices including electrocardiograms (ECGs). This large corpus of data presents great opportunities to improve the quality of cardiac care. However, analyzing the data from these sensors is a challenge; the relevant information from ～120 000 heart beats per patient per day must be condensed into a human-readable form. Our goal is to facilitate the analysis of these unwieldy data sets. We have developed an open source tool for creating easy-to-interpret plots of cardiac information over long periods. We call these plots ECG clocks. The utility of our ECG clock library is demonstrated through multiple examples drawn from a database of 24-h Holter recordings. In these case studies, we focus on the visualization of heart rate and QT dynamics. The ECG clock concept is shown to be relevant for both physicians and researchers, for identifying healthy and abnormal values and patterns in ECG recordings. In this paper, we describe how to use the ECG clock library to analyze 24-h ECG recordings, and how to extend the source code for your own purposes. The tool is applicable to a wide range of cardiac monitoring tasks, such as heart rate variability or ST elevation. This library, which we have made freely available, can help provide new insights into circadian patterns of cardiac function in individuals and groups.
关键词： open-source software,Electrocardiogram,visualization,long QT syndrome,heart rate variability
更新于2025-09-19 17:13:59
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[IEEE 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) - Xiamen, China (2019.12.17-2019.12.20)] 2019 Photonics & Electromagnetics Research Symposium - Fall (PIERS - Fall) - A Multifunctional Polarization Converter Base on Solid Plasma Metasurface
摘要： Recent advances in wearable and/or biomedical sensing technologies have made it possible to record continuous biomedical signals over long periods of time. This paper reviews multiscale approaches for their analysis.
关键词： heart failure,multiscale fluctuations,spontaneous physical activity,complex biosignals,Autonomic nervous system,psychiatric disorder,dynamical disease,heart rate variability
更新于2025-09-19 17:13:59
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Modeling the Electrical Production Potential of Non-Planar Photovoltaic Modules
摘要： The collection of long-term health data is accelerating with the advent of portable/wearable medical devices including electrocardiograms (ECGs). This large corpus of data presents great opportunities to improve the quality of cardiac care. However, analyzing the data from these sensors is a challenge; the relevant information from ～120 000 heart beats per patient per day must be condensed into a human-readable form. Our goal is to facilitate the analysis of these unwieldy data sets. We have developed an open source tool for creating easy-to-interpret plots of cardiac information over long periods. We call these plots ECG clocks. The utility of our ECG clock library is demonstrated through multiple examples drawn from a database of 24-h Holter recordings. In these case studies, we focus on the visualization of heart rate and QT dynamics. The ECG clock concept is shown to be relevant for both physicians and researchers, for identifying healthy and abnormal values and patterns in ECG recordings. In this paper, we describe how to use the ECG clock library to analyze 24-h ECG recordings, and how to extend the source code for your own purposes. The tool is applicable to a wide range of cardiac monitoring tasks, such as heart rate variability or ST elevation. This library, which we have made freely available, can help provide new insights into circadian patterns of cardiac function in individuals and groups.
关键词： visualization,heart rate variability,Electrocardiogram,long QT syndrome,open-source software
更新于2025-09-19 17:13:59
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Permanent Optimization of Large-FSR Dual-Microring Bandpass Filters
摘要： Energy-ef?cient communication links are crucial for future processors and optoelectronic microchips in order to continue growths in computing and information technologies [1]. Wavelength-division multiplexing (WDM) techniques based on silicon photonic circuits are ideal for high bandwidths data communication systems with small footprints [2,3]. Compact double ring resonators (DRRs) provide excellent properties to realize spectral ?lters with ?at-top transmission characteristics, providing a steep roll-off with low channel crosstalk at dense frequency grids. Hence, cascaded DRRs as illustrated in Fig. 1 (a) are well-suited for integrated WDM systems on optoelectronic microchips. The high refractive index of silicon facilitates small ring perimeters and the wide free spectral range (FSR ∝ 1 Lr ) enables multiplexing tens of data channels to a common bus waveguide. The high energy-ef?ciency which is enhanced by the strong thermo-optic effect (TOE) combined with the short physical lengths is another relevant advantage of the compact size. However, manufacturing variability and associated photonic component deviations remain a serious drawback [4]. Hence, most recent works use thermal heaters for the dynamic ?lter control as well as to counterbalance inevitable manufacturing deviations [5-7]. In this work, we present multilayer compatible 5 and 10μm radius DRR ?lters based on microrings manufactured with deposited amorphous silicon [8]. We demonstrate a permanent correction of manufacturing variations and optimize the spectral properties of DRR ?lters. Such fabrication imperfections which may arise more frequently in multilayer circuits are exempli?ed in Fig. 1 (a) where widths (Δw), heights (Δh), and refractive index (Δn) variations are implemented to one microring; even lowest deviations substantially degrade the ?lter response. A DRR measurement with undesired drop port splitting which was corrected through the SiO2 top cladding by 405 nm laser-trimming one of the rings is shown in Fig. 1 (b); the intermediate trimming spectra are provided in order to guide the eye. The possibility to permanently align ?lters to a given wavelength channel is presented in Fig. 1 (c). In this experiment both 5 μm radius racetracks were alternately trimmed to shorter wavelengths, without degrading the spectrum or the ?lter bandwidths. In summary, several compact DRR ?lters with multiplexers up to 8-channels suitable for multilayer integration at the CMOS back-end-of-line with start-of-art performance were successfully fabricated and tested. Malfunctioning components were identi?ed and optimized on micron-scales by a post-fabrication trimming method. The proposed correction method for DRR multiplexers allows adjusting ?lters to a prespeci?ed wavelength channel and enables more generalized concepts which do not require a thermal heater for each ring thereby mitigating detrimental thermal crosstalk and lowering the overall energy consumption.
关键词： manufacturing variability,Wavelength-division multiplexing (WDM),spectral ?lters,double ring resonators (DRRs),silicon photonic circuits,thermal heaters,Energy-ef?cient communication links,laser-trimming,amorphous silicon,CMOS back-end-of-line
更新于2025-09-16 10:30:52
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[IEEE 2019 41st Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC) - Berlin, Germany (2019.7.23-2019.7.27)] 2019 41st Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) - Potential of Laser Doppler Flowmetry in the Medical Needle Insertion Procedures
摘要： Mass customization enables the creation of personalized products that fulfill the features desired by specific customers. In this context, variability models are used to specify which configurable features are supported and which constraints among the features must be satisfied to guarantee the validity of the derived products. As the market demand grows and evolves, variability models become increasingly complex. In such entangled models, it is hard to identify which features are absolutely essential or dispensable because they are required to be included or excluded from all the possible products, respectively. This paper exposes the limitations of existing approaches to automatically detect those features and provides an algorithm that efficiently performs such detection.
关键词： Mass customization,dead feature,variability model,feature model,configuration model,core feature,product platform
更新于2025-09-16 10:30:52
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An Improved Technique to Estimate the Total Generated Power by Neighboring Photovoltaic Systems Using Single-point Irradiance Measurement and Correlational Models
摘要： A major operational challenge of photovoltaic (PV) systems is the variability in their output power, which is mainly caused by the movements of clouds. This variability can be reduced through building several smaller PV systems, distributed within an area, rather than a single, large PV system, often referred to as the geographic smoothing. This smoothing can be expressed mathematically by the variability reduction index (VRI), which denotes the reduced level of variations in the output power of a group of neighboring PV systems. VRI considers the size of the PV systems, the distances between them, as well as the mathematical correlation model that reflects the timescale, along with the speed, direction and density of the clouds passing over the PV systems. The VRI and solar irradiance, measured at one location, can be used to estimate the power generated by a group of neighboring PV systems. This paper initially compares and assesses various VRI models through their application on a group of 16 small-scale neighboring rooftop PV systems, distributed over a square kilometer area in Brisbane, Australia. Then, a technique is proposed to improve the estimation accuracy of the overall generated power by a group of neighboring small-scale rooftop PV systems. This new technique is validated by comparing the estimated power with the measured power, generated by the investigated PV systems.
关键词： Correlational model,Irradiance,Variability reduction index,Distributed neighboring PV systems
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Chicago, IL, USA (2019.6.16-2019.6.21)] 2019 IEEE 46th Photovoltaic Specialists Conference (PVSC) - Investigation of materials for hot carrier solar cell absorbers
摘要： The collection of long-term health data is accelerating with the advent of portable/wearable medical devices including electrocardiograms (ECGs). This large corpus of data presents great opportunities to improve the quality of cardiac care. However, analyzing the data from these sensors is a challenge; the relevant information from ～120 000 heart beats per patient per day must be condensed into a human-readable form. Our goal is to facilitate the analysis of these unwieldy data sets. We have developed an open source tool for creating easy-to-interpret plots of cardiac information over long periods. We call these plots ECG clocks. The utility of our ECG clock library is demonstrated through multiple examples drawn from a database of 24-h Holter recordings. In these case studies, we focus on the visualization of heart rate and QT dynamics. The ECG clock concept is shown to be relevant for both physicians and researchers, for identifying healthy and abnormal values and patterns in ECG recordings. In this paper, we describe how to use the ECG clock library to analyze 24-h ECG recordings, and how to extend the source code for your own purposes. The tool is applicable to a wide range of cardiac monitoring tasks, such as heart rate variability or ST elevation. This library, which we have made freely available, can help provide new insights into circadian patterns of cardiac function in individuals and groups.
关键词： long QT syndrome,Electrocardiogram,heart rate variability,open-source software,visualization
更新于2025-09-16 10:30:52
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[IEEE 2019 3rd School on Dynamics of Complex Networks and their Application in Intellectual Robotics (DCNAIR) - Innopolis, Russia (2019.9.9-2019.9.11)] 2019 3rd School on Dynamics of Complex Networks and their Application in Intellectual Robotics (DCNAIR) - Synchronization of the process of autonomous regulation of blood circulation with low-frequency components of the laser Doppler flowmetry signal
摘要： The features of the individual dynamics and interaction of the elements of the autonomous regulation of blood circulation and blood flow fluctuations in the microvasculature of the skin were investigated. Phase synchronization of the laser Doppler flowmetry signal with processes of autonomic regulation is revealed. This may indicate the effect of vegetative regulation on the myogenic range of laser Doppler flowmetry.
关键词： Laser Doppler flowmetry,heart rate variability,blood pressure variability,photoplethysmogram,cardiointervalogram,0.1 Hz,statistical significance,phase capture
更新于2025-09-12 10:27:22