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检索条件"任意字段=Conference on Design and Engineering of Optical Systems II"

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InterView: A System to Support Interaction-Driven Visualization systems design 10th

InterView: A System to Support Interaction-Driven Visualizat...

引用

10th IFIP WG 13.2 International Working conference on Human-Centered Software engineering (HCSE)

作者： Filosa, Matteo Plexousaki, Alexandra Benvenuti, Dario Catarci, Tiziana Angelini, Marco Sapienza Univ Roma Rome Italy Univ Crete ICS FORTH Iraklion Greece Univ Rome Link Campus Rome Italy

ISBN: (纸本)9783031645754;9783031645761

In the design of a visualization system for exploratory data analysis, a designer faces several issues: (i) the recognition of the causes behind excessive latency experienced by end users, who become quickly disengaged in the exploration if the response time is below a desired threshold (i.e., 500 ms);(ii) the discovery of portions of the visualization system that are poorly explored or may not work as intended;(iii) the lack of precise feedback from the end users who, struggling from excessive latency, become disinterested in the exploration and report high-level feedback that is too broad and generic for the designer to understand and transform into actionable changes to the design. To address these issues and provide more guidance to visualization system designers, we contributed a general framework to model and assess user interactions in big data visualization systems. It models the interaction space of the visualization system with the concept of augmented statecharts that label interactions with their latency thresholds. It is implemented in a system, InterView (the name relates to the collaboration between visualization designers and end users), composed of two software components, one to automatically generate the interaction space of a visualization system using a statechart, and one to replay user traces, reproducing each interaction an end user performed in the interaction log. In this paper, we demonstrate the capabilities of InterView applying it to a well-known crossfilter interface, Falcon, to guide the visualization system designers in discovering the root causes behind excessive latency, coupled with a complete understanding of the interaction space of their visualization system. In such a way, designers can finally acknowledge the problems of their visualization system with higher granularity and precision, giving more context to the feedback received by the end users.

关键词： Interaction logs Visualization systems User Interaction Modeling

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Structural design and Experimental Verification of Center Overhead stowage Bins in Civil Aircraft 2

Structural Design and Experimental Verification of Center Ov...

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2nd International conference on Advanced Manufacturing Technology and Manufacturing systems, ICAMTMS 2023

作者： Ai, Mengya Yang, Wuyi Cai, Ruihong Shanghai Aircraft Design and Research Institute Commercial Aircraft Corporation of China Shanghai China

ISBN: (纸本)9781510667327

Safe, reliable, economical, and esthetical stowage bins in civil aircraft can provide passengers with a great space experience and improve the economic efficiency of airlines. This paper proposes a structural design scheme that enables the flexible arrangement of center overhead stowage bins tailored to the specific needs of airlines. Moreover, the principles and contents of the structural design of center overhead stowage bins in civil aircraft are presented, ensuring compliance with the general aircraft design and airworthiness requirements. Static tests are conducted to verify the airworthiness of the designed stowage bins under the limit and ultimate load conditions. This paper provides valuable insights for the structural design and experimental verification of center overhead stowage bins in civil aircraft. © 2023 SPIE.

关键词： Structural design

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Polarization-insensitivity and rapid-calibration optical delay line on 3-μm-thick SOI photonics platform 4

Polarization-insensitivity and rapid-calibration optical del...

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4th International conference on Laser, Optics, and Optoelectronic Technology, LOPET 2024

作者： Li, Ang Zhao, Nengyang Liu, Chenyang Ding, Yanyue Wang, Ruxue Qiu, Chao Wu, Aimin National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences 865 Changning Road Shanghai200050 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China

ISBN: (纸本)9781510681903

We design, fabricate, and characterize a polarization-insensitivity 8-bit optical tunable delay line (OTDL) on the 3-μm-thick silicon-on-insulator (SOI) platform, employing low-loss waveguide spirals and rapid-calibrated integrated optical switches. The spirals integrate mode converters and Euler bends, have high fabrication tolerance, low wavelength-sensitivity, and propagation loss as low as 0.32 dB/cm within 140 nm bandwidth. The 4-cm-length waveguide spiral has polarization dependent loss (PDL) less than 0.3 dB within 140nm bandwidth. OTTDL utilizes optical switches with extinction ratio (ER) of up to 50 dB for path switching. The switch integrated multimode interferences (MMIs), thermo-optic phase shifter and variable optical attenuators (VOAs). VOAs not only enhance the delay signal-to-noise ratio, but also facilitate rapid calibration in OTDLs. With maximum delay time of 3570 ps and resolution of 14 ps, our OTDL holds significant promise for future applications, particularly in the integration of delay line arrays for microwave photon radar systems. © 2024 SPIE.

关键词： Microwave photonics

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Artificial Noise design for SISO ACO-OFDM against Randomly Located Eavesdroppers

Artificial Noise Design for SISO ACO-OFDM against Randomly L...

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2024 Asia Communications and Photonics conference, ACP 2024 and International conference on Information Photonics and optical Communications, IPOC 2024

作者： Wang, Weishen Yang, Fan Liao, Yuxuan Dong, Yuhan Shenzhen International Graduate School Tsinghua University Shenzhen China Department of Electronic and Computer Engineering University of Toronto Toronto Canada Pengcheng Laboratory Shenzhen China

ISBN: (纸本)9798350379266

We investigates the secrecy performance of single-input single-output (SISO) asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) visible light communication (VLC) wiretap systems. We propose a precoding scheme using time-domain artificial noise (AN) to maximize secrecy rate. Furthermore, we also consider the scenario where the eavesdropper's location is random and calculate the average secrecy rate using stochastic geometry methods. Numerical results validate that the proposed scheme enhances the system secrecy capacity and mitigates the increase in peak-to-average power ratio (PAPR) caused by the introduction of AN. © 2024 IEEE.

关键词： Orthogonal frequency division multiplexing

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The RAM(S) analysis of the CUBES spectrograph for the preliminary design phase and developments 11

The RAM(S) analysis of the CUBES spectrograph for the prelim...

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conference on Modeling, systems engineering, and Project Management for Astronomy XI

作者： DAuria, Domenico De Caprio, Vincenzo Sibalic, Mina Cianniello, Vincenzo Eredia, Christian Genoni, Matteo Cirami, Roberto Covino, Stefano INAF Osservatorio Astron Capodimonte Salita Moiariello 16 I-80131 Naples Italy Univ Napoli Federico II Dipartimento Ingn Ind Via Claudio 21 I-80125 Naples Italy INAF Osservatorio Astron Brera Via Brera 28 I-20121 Milan Italy INAF Osservatorio Astron Trieste Via GB Tiepolo 11 I-34143 Trieste Italy

ISBN: (纸本)9781510675216;9781510675223

Over the years, the European Southern Observatory (ESO) and a collaborative network of national agencies, institutes, and universities have continually upgraded the VLT and its array of telescopes, accompanied by various cutting-edge instruments and modules. Among the next generation of instruments, there is CUBES (Cassegrain U-Band Efficient Spectrograph), a mid-resolution spectrograph working in the UV ground-based band (300-400 nm). The work presented here is a proceeding on the CUBES hardware dependability and maintainability analysis up to the successful Preliminary design Review (passed in December 2022) and some forthcoming updates from the ongoing Final design phase. The work has been developed during the design phases in order to assess the dependability of the System, as part of the Very Large Telescope, and to verify the compliance with the System requirements. The goal has been the identification of the criticalities and potential failure and the definition of the basics of maintainability in view of the last phases of the project, with the aim to keep the system in operation with high availability. Furthermore, the document provides the functional analysis of the System, with a deep focus on the influence of the "degraded modes" on the reliability of the System. Reliability analysis plays a crucial role in ensuring the components of the CUBES project meet stringent performance expectations. It assesses the likelihood of component failure, providing insights into potential vulnerabilities and enabling proactive problem-solving to enhance overall system reliability.

关键词： VLT CUBES Spectrograph RAMS RAM Reliability Safety System engineering

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Novel design of Flexible Microwave Photonics Filter for Communication Payload 8

Novel Design of Flexible Microwave Photonics Filter for Comm...

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8th International conference on Computers and Devices for Communication, CODEC 2023

作者： Basak, Koushik Barnwal, Pawan Pandey, Pranav Kumar HSTA Optical Communication Systems Division India Satcom & Navigation Systems Engineering Division Ahmedabad380015 India

ISBN: (纸本)9798350317176

Microwave Photonic Filter (MPF) is an alternative of RF filter where tunability and selectivity is prime concern. In MPF, input RF signals is modulated by optical carrier, processed optically and finally converted to electrical domain by photodetector. The paper discuss about MPF design having flexible tunability and configurability using stimulated Brillouin scattering effect in single mode fiber. Simulation results show the proposed design of MPF has a broad tunability range of 1 GHz to 20 GHz and side band rejection upto 20 dB in 20 MHz frequency offset from the edge of the frequency. © 2023 IEEE.

关键词： Microwave photonics

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Research on Optimal design of Reaction Conditions Based on Mixed Statistical Model 2

Research on Optimal Design of Reaction Conditions Based on M...

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2nd International conference on Applied Statistics, Computational Mathematics, and Software engineering, ASCMSE 2023

作者： Zhao, Runhao Zhang, Jiayu Wang, Xianrui Su, Bolun Tan, Junze Ben, Niu Laboratory for Big Data and Decision National University of Defense Technology Changsha China

ISBN: (数字)9781510668195

ISBN: (纸本)9781510668188

In the preparation of chemical raw materials, there are often some optimization problems that are difficult for people to solve. Due to the complex interaction between various factors and the great difference between the theoretical model and the practice, an effective optimal design model is imminent. In this paper, an innovative mixed statistical model is proposed for optimal design, including five sub-models of ANOVA model, polynomial optimal regression analysis model, design uniformity model, two-step regression model, and optimization model. In this paper, the mixed statistical model is also applied to the study of the combination of catalyst and temperature in the preparation of C4 olefin production, which has high practicability. © 2023 SPIE.

关键词： Optimal systems

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design of High-Speed and High-Reliability Communication Network Based on FC-AE-1553 optical Fiber Bus Technology 6

Design of High-Speed and High-Reliability Communication Netw...

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6th IEEE International conference on Electronic Information and Communication Technology, ICEICT 2023

作者： Wang, Baohua Han, Shuai Wu, Jiayi Wang, Feng Jinming, Wang Beijing Institute of Astronautical Systems Engineering Beijing China Harbin Institute of Technology Harbin China

ISBN: (纸本)9798350399059

This paper proposes a high-speed and high-reliability communication network based on the FC-AE-1553 optical fiber bus. It adopts a high-reliability dual-redundant switching network topology, designs the active and standby NC nodes, and formulates a time-triggered communication mechanism. The communication network also implements scheduling cycle time division measures for multi-NC communication to realize multi-NC collision-free reliable communication. Through engineering practice and application, the FC-AE-1553 optical fiber bus high-speed and high-reliability communication network proposed in this paper has achieved good application results. © 2023 IEEE.

关键词： optical fibers

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1550nm-1600nm design and research of Erbium-doped fiber lasers 2

1550nm-1600nm design and research of Erbium-doped fiber lase...

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2nd International conference on Smart Energy and New Power systems, SENPS 2024

作者： Wang, Minghui Department of Electronic Engineering Xi'An University of Posts and Telecommunications Xi'an China

The fiber laser, an innovative laser type, holds immense significance in optical communication, industrial processing, and scientific research owing to its remarkable high power and efficiency combination. The 1550nm light wave, widely utilized in fiber communication, renders the research and production of fiber lasers in this range pivotal for diverse applications. Within the pages of this paper, we delve into the intricate design and meticulous investigation of an erbium-doped fiber laser operating within the 1550nm-1600nm band. Our noteworthy achievement lies in the adept attainment of laser emission at 1575 nm. This success is intricately woven into the reciprocal reflection of pump light within the resonant cavity of the fiber laser and the nuanced electronic transition process of erbium ions. This paper not only unfolds a detailed exploration of the structural nuances but also unveils the design principles, methodology, and results of MATLAB simulations employed in crafting erbium-doped fiber lasers. Exhibiting exemplary performance at the 1550nm wavelength, this laser proves promising in realms such as optical communication and medical applications, signalling a paradigm shift in the possibilities within these domains. The research presented herein introduces avant-garde concepts for designing high-performance fiber lasers, providing a rich foundation for further exploration in related fields. Through this comprehensive discourse, we aim to contribute not only to the advancement of fiber laser technology but also to the expansion of possibilities in optical communication and beyond. © Published under licence by IOP Publishing Ltd.

关键词： Fiber lasers

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A Study of the Power Conversion Efficiency of EDFAs for Future Multicore Submarine Transmission systems 49

A Study of the Power Conversion Efficiency of EDFAs for Futu...

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49th European conference on optical Communications, ECOC 2023

作者： Liang, Sijing Downie, John D. Makovejs, Sergejs Edwards, Merrion Jung, Yongmin Optoelectronics Research Centre University of Southampton SouthamptonSO17 1BJ United Kingdom Corning Research and Development Corp 1 Riverfront Plaza CorningNY14831 United States Corning Incorporated Corning Optical Communications Lakeside Business Village CH5 3XD United Kingdom

ISBN: (纸本)9781839539954

We performed simulations and experiments to evaluate the performances of three representative erbium-doped fibre designs for subsea SDM-based systems. Small-core high-NA fibre design which can maintain high power conversion efficiency and deep saturation at low-power operation is favourable for large-scale power-constrained SDM systems. © The Institution of engineering & Technology 2023.

关键词： Conversion efficiency

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