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design Experimentation and Scientific Research in the 70s and 80s Industrialized Construction in Palermo 11th

Design Experimentation and Scientific Research in the 70s an...

引用

11th International conference of Ar.Tec.

作者： Basirico, Tiziana Kore Univ Enna Dept Engn & Architecture I-94100 Enna Italy

ISBN: (纸本)9783031718571;9783031718557;9783031718540

In the period from the ii World War to the mid-1980s, Italy witnessed growing attention towards the industrialization of the construction sector with different territorial specificities. The paper analyses some 70s and 80s public housing districts in Palermo, retracing the history of industrialization in Sicily. The contribution of prof. Benedetto Colajanni and his disciples studying the typological, structural and figurative aspects of these buildings, is highlighted. These are mainly systems for the industrialization of concrete casting with couffrage-tunnels or banches et tables developed in Sicily, thanks to the design contest and the activities carried out by the building cooperatives adhering to the Ravennate Consortium which, at the end of the 1960s, had acquired the patents and machinery for the industrialization of concrete casting of load-bearing structures. The first example of the application of industrialization in Palermo was the Sperone district, a testing ground for both the companies and the design group, headed by Benedetto Colajanni. It was necessary to wait about a decade, with the PEEP districts and the law 25/80, to test the completion on site with modular and standardized elements, both for the closures of the facades and the internal partitions. The paper provides a contribution to the knowledge of a specific construction typology that has characterized a wide range of residential buildings both in Palermo and in the rest of Italy and which requires maintenance and recovery interventions that can guarantee the performance standards required by current regulations, maintaining the original identity.

关键词： Building Industrialization Public Housing Couffrage-tunnel Banches et Tables systems Typological and Structural Research

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A Multi-Objective Optimization Register Clustering Method 3

A Multi-Objective Optimization Register Clustering Method

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3rd International conference on High Performance Computing and Communication engineering, HPCCE 2023

作者： Liu, Ningzhuang Deng, Hanyu College of Electrical and Control Engineering Xi'an University of Science and Technology Xi'an China

ISBN: (数字)9781510674653

ISBN: (纸本)9781510674646

The clock tree synthesis (CTS) step is critical for the physical design of ultra-large-scale integrated circuits (VLSI). Outstanding CTS results can reduce the skew of clock networks, decrease chip power consumption while improving performance and reliability of the chip. This paper proposes a register clustering method based on the nondominated sorting genetic algorithm ii (NSGA-ii) algorithm to generate the leaf-level topology of the clock tree, addressing multi-objective optimization issues in integrated circuit physical design. We model register clustering as a multi-objective optimization problem. By analyzing the clock network model and power consumption to design the objective functions, register clustering schemes are encoded. Pareto optimal solutions are obtained through iterative evolution and non-dominated sorting. This method is integrated into the traditional CTS process. Three circuits were selected from the ISCAS89 benchmark circuit for testing and analysis proving its effectiveness. Experimental results show that compared to traditional clock tree synthesis methods, our approach reduces timing skew by more than 5%, maximum clock delay by over 15%, and power consumption by over 10%. Our strategy achieves a balance among multiple physical design objectives, obtaining superior clustering schemes. This paper offers an effective algorithm for multi-objective register clustering. © 2024 SPIE.

关键词： Electric power utilization

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design of Rotary Cryocoolers Drive Control System Based on FPGA 4

Design of Rotary Cryocoolers Drive Control System Based on F...

引用

4th International Computational Imaging conference, CITA 2024

作者： Wang, Fei Su, Junbo Wang, Haihu Dong, Wei Hu, Zhibin Kunming Institute of Physics Kunming China

ISBN: (纸本)9781510688834

Cooled infrared detectors are the core components of high-performance infrared systems, utilizing Stirling cryocoolers to maintain a stable operating temperature. This stabilizes detector temperature, suppresses dark current, mitigates noise, enhances sensitivity, and improves image quality. Traditional infrared systems operate with separate image processing and cryocooler drive components, typically managed by an FPGA and a microcontroller or DSP, respectively, increasing development costs and complexity. This study proposes integrating the cryocooler control electronics (CCE) of rotary cryocoolers into the FPGA-based infrared image processing mainboard, leveraging the resources of the image processing FPGA to simplify system architecture, reduce PCB area, component count, communication delays, and failure points, thereby enhancing system reliability and response speed. In hardware design, principles of miniaturization, low power consumption, and autonomous control are followed, and a fully localized CCE solution using domestic components is developed. The hardware design prioritizes space and power reduction while ensuring robust performance. In software, a BLDC motor drive method based on FPGA is developed, using a temperature closed-loop digital PID algorithm to adjust the PWM signal duty cycle, achieving rapid and precise temperature control. Experimental results demonstrate that the system meets the expected temperature control accuracy, with fast tracking speed and good stability. Integrating the cooler drive control into FPGA simplifies the overall system design while enhancing reliability and responsiveness. This approach meets the infrared systems' requirements for miniaturization, low power consumption (SWaP), and low cost, offering a universal methodology for rotary cryocooler drive control, demonstrating notable application value. © 2025 SPIE.

关键词： Infrared detectors

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Optimization design of flow field in shelter based on CFD calculation 9

Optimization design of flow field in shelter based on CFD ca...

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9th International conference on Electromechanical Control Technology and Transportation, ICECTT 2024

作者： Su, Chen Liu, Xin Systems Engineering Institute AMS PLA Tianjin300161 China

ISBN: (纸本)9781510682399

In order to optimize the design of air flow field and temperature field in the shelter, an accurate method based on CFD is proposed to calculate the air flow field in different configurations. By simulating the different configurations of air conditioning and fresh air system in the shelter, the distribution uniformity of air flow field, temperature field and particulate pollutants in the shelter are calculated, so that the air flow uniformity and air supply rationalization are realized, which provides theoretical support and reference for the design of man-machine environment in the shelter. © 2024 SPIE.

关键词： Air conditioning

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Recent Advances in Wideband Raman Amplifiers 12

Recent Advances in Wideband Raman Amplifiers

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Next-Generation optical Communication: Components, Sub-systems, and systems Xii 2023

作者： Hazarika, Pratim Tan, Mingming Forysiak, Wladek Aston University BirminghamB4 7ET United Kingdom

We review recent advances in the design of wideband Raman amplifiers, describe their experimental performance evaluation in coherent transmission systems, and discuss their potential applications to wideband optical n... 详细信息

ISBN: (纸本)9781510659636

关键词： optical fiber communication

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Optimization design of computer information processing systems in the big data perspective

Optimization design of computer information processing syste...

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2023 International conference on Computer Graphics, Artificial Intelligence, and Data Processing, ICCAID 2023

作者： Zheng, Zhaoxia Chi Feng Institute of Industrial Technology Inner Mongolia Chifeng024000 China

ISBN: (纸本)9781510677685

Computer information processing systems face numerous challenges in the context of big data, and optimization design provides an important avenue to enhance system performance in handling large datasets. This paper first analyzes the bottlenecks, inefficiencies, and poor scalability challenges that big data poses to existing systems. Subsequently, it proposes three system optimization design approaches: modular design, pipeline parallel processing, and elastic scaling mechanisms. Specific solutions such as modular segmentation, MapReduce pipeline implementation, and dynamic resource allocation are presented based on these optimization ideas. These optimization strategies and design solutions effectively enhance the system's scalability and processing performance in the face of big data. Therefore, this paper offers important insights and approaches to drive the evolution of computer information processing systems into the era of big data. © 2024 SPIE.

关键词： Digital storage

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Optimization of PbS Colloidal Quantum Dots-based near-infrared photodetectors using pentacene

Optimization of PbS Colloidal Quantum Dots-based near-infrar...

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2024 International conference on Optoelectronic Information and optical engineering, OIOE 2024

作者： Yi, Fangzhou Zhen, Dingting Peng, Zhannan Sun, Zhenhua Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China

ISBN: (数字)9781510680470

ISBN: (纸本)9781510680463

Lead sulfide colloidal quantum dots (PbS CQDs) offer the unique advantages of tunable bandgap, cost-effectiveness, and ease of processing. These characteristics make PbS CQDs an ideal candidate for the development of near-infrared (NIR) photodetectors, with promising applications in diverse fields such as fiber optic communication, biomedical imaging, and national defense. In this study, NIR photodetectors employing indium gallium zinc oxide (IGZO) as the carrier conductive layer, PbS CQDs as the photosensitive layer, and pentacene as the functional enhancement layer are fabricated and systematically studied. Comparative analysis unveiled That the p-type semiconductor property of the pentacene is leveraged to increase the photoresposne of the PbS CQDs-IGZO NIR photodetectors. This work not only sheds light on the structural advancements of photosensitive field-effect transistors but also provides valuable insights into optimizing their performance. © 2024 SPIE.

关键词： ii-VI semiconductors

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design and Implementation of Simulated Aerial Refueling Based on Small Fixed-Wing Cluster UAVs 20th

Design and Implementation of Simulated Aerial Refueling Base...

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20th Chinese Intelligent systems conference

作者： Li, Hao Li, Zhiyu Zuo, Ling Hou, Lin Yang, Yukun Wen, Jiayun Tang, Qiang AVIC Xian Flight Automat Control Res Inst Xian 710076 Peoples R China Natl Key Lab Sci & Technol Aircraft Control Xian 710076 Peoples R China

ISBN: (纸本)9789819786565;9789819786541;9789819786534

This paper represents research and validation of aerial refueling technology for fixed-wing cluster UAVs conducted in Subject 4 of the Unmanned Scramble 2023 event. Firstly, a tanker state estimation method is designed, which can estimate the complete motion state of the tanker during UAV tracking. Second, a relative navigation method based on target features is developed, which utilizes deep neural networks to complete target detection and relative navigation solving. Further, a multi-UAV cooperative refueling control strategy is designed to ensure that the refueling of the cluster UAV is completed in an orderly manner. Finally, the effectiveness of the method is verified by small fixed-wing cluster UAV flight test.

关键词： Cluster UAVs Aerial Refueling Fixed-Wing

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Implementation and Optimization of Amplitude and Phase Measurement Based on Kalman Filtering 16

Implementation and Optimization of Amplitude and Phase Measu...

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16th International conference on Signal Processing systems, ICSPS 2024

作者： Chen, Wangjie Zhu, Weiqiang Fan, Zhenhong Yang, Jian Wang, Xin Yu, Han Du, Siyu School of Electronic and Optical Engineering Nanjing University of Science and Technology Nanjing210094 China Nanjing Electronic Equipment Institute Nanjing210007 China

ISBN: (纸本)9781510689251

Accurate pointing of phased array antenna beams requires precise phase and amplitude coherence among each array element channel. However, in practical phased array antenna systems, complete consistency in the amplitudes and phases of each array element channel is unattainable. Therefore, real-time monitoring and correction of amplitude and phase errors in the array channels are essential. The core of array unit calibration lies in precise measurement or estimation of channel amplitude and phase errors. This paper introduces a method for precise amplitude and phase measurement based on Kalman filtering and comprehensive phase parameter joint estimation. This approach combines Direct Fourier Transform (DFT) with direct weighted accumulation and iterative Kalman filtering. Simulation experiments demonstrate that this method significantly enhances measurement accuracy by an order of magnitude, with root mean square amplitude measurement accuracy surpassing 0.002 dB and phase measurement accuracy exceeding 0.0005°. The architecture utilizes Zynq-7000 + ADRV9009 for a compact design. By optimizing FPGA design logic, FPGA resource utilization is reduced from 36% to 26%, resulting in a decrease in power consumption from 2.17857W to 1.33948W. Through data extraction and interpolation, multiple channels can be measured simultaneously using the same algorithm module for amplitude and phase measurements. This method achieves high accuracy in phase measurement and exhibits promising engineering applications. © 2025 SPIE.

关键词： Phase measurement

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VSTPOL: project management and system engineering activities for the new wide-field polarimetric mode of the VST 11

VSTPOL: project management and system engineering activities...

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

作者： Savarese, Salvatore Colapietro, Mirko Schipani, Pietro Perrotta, Francesco D'Orsi, Sergio Marty, Laurent Capasso, Giulio Sanchez, Ricardo Zanmar Magrin, Demetrio Farinato, Jacopo Umbriaco, Gabriele Covino, Stefano INAF Osservatorio Astron Capodimonte Salita Moiariello 16 I-80131 Naples Italy INAF Osservatorio Astron Padova Vicolo Osservatorio 5 I-35122 Padua Italy Univ Bologna Dipartimento Fis & Astron A Righi Via Piero Gobetti 93-2 I-40129 Bologna Italy INAF Osservatorio Astron Brera Via Bianchi 46 I-23807 Merate Italy

ISBN: (纸本)9781510675216;9781510675223

VSTPOL is a project to provide a new polarimetric capability to the VST. With its 2.6m primary mirror and 1 degree x 1 degree field of view, the upgrade will make the VST the first large wide field survey telescope with optical polarimetry, filling a specific niche in the astronomical instrumentation landscape. The polarimetric mode will replace the electro-mechanical system that hosts the ADC, which currently sits unused, so that the filter can be accommodated without compromising the ordinary optical configuration. The upgrade requires the design of the mechanical interface to the telescope structure and optics, and the integration of the instrument electronic and software systems. In this paper we present an overview of the approach adopted for the project management and system engineering towards the design of the polarimetric mode addition. In particular, this includes the activities related to the definition of schedule, product and work breakdown structure, deliverables, technical requirements analysis and interfaces.

关键词： VST CTA Polarimetry project management system engineering

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