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5 results on '"V. Flaminio"'

1. Precise Reflectance/Transmittance Measurements of Highly Reflective Optics with Saturated Cavity Ring-Down Signals.

Author

Han, Yanling, Li, Bincheng, Wang, Jing, Cui, Hao, and Wang, Tianming

Subjects
NEUTRAL density filters, OPACITY (Optics), REFLECTANCE measurement, OPTICAL losses, ELECTRONIC data processing
Abstract

In this paper, a data processing approach was developed to accurately extract the ring-down time and amplitude of the saturated cavity ring-down (CRD) signal; both were utilized to determine simultaneously the high reflectance and residual transmittance of highly reflective (HR) mirrors with a dual-channel CRD configuration. The influence of saturation was eliminated by deleting the beginning saturated data points of the saturated CRD signal and fitting the remaining non-saturated CRD signal to a single-exponential function. By comparing the reflectance/transmittance measurement results of HR samples obtained via data processing of saturated CRD signals and via single-exponentially fitting non-saturated CRD signals with utilization of neutral density filter(s) to eliminate saturation, it was found that the reflectances obtained with both methods were in excellent agreement, while the residual transmittance obtained with the saturated CRD signal was more accurate than that obtained with the neutral-density-filter-attenuated non-saturated CRD signal. The proposed data processing method eliminated the need to use the neutral density filters, therefore avoiding the adding of the optical density error to the uncertainty of residual transmittance measurement and improving the measurement accuracy. The proposed data processing method also extended the dynamic range of the dual-channel CRD scheme for simultaneous measurement of reflectance, transmittance and optical loss. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Daksha: on alert for high energy transients

Author

Bhalerao, Varun, Vadawale, Santosh, Tendulkar, Shriharsh, Bhattacharya, Dipankar, Rana, Vikram, Adalja, Hitesh Kumar L., Belatikar, Hrishikesh, Bhaganagare, Mahesh, Dewangan, Gulab, Ghodgaonkar, Abhijeet, Kumar Goyal, Shiv, Gunasekaran, Suresh, P J, Guruprasad, Koyande, Jayprakash G., Kulkarni, Salil, Kutty, APK, Ladiya, Tinkal, Mahapatra, Suddhasatta, Marla, Deepak, Mate, Sujay, Mithun, N.P.S., Mote, Rakesh, Narang, Sanjoli, Nema, Ayush, Nimbalkar, Sudhanshu, Pai, Archana, Palit, Sourav, Patel, Arpit, Patel, Jinaykumar, Pradeep, Priya, Ramachandran, Prabhu, Bharath Saiguhan, B.S., Saraogi, Divita, Sawant, Disha, Shanmugam, M., Sharma, Piyush, Shetye, Amit, Singh, Nishant, Singh, Shreeya, Singhal, Akshat, Sreekumar, S., Sridhar, Srividhya, Srinivasan, Rahul, Tallur, Siddharth, Tiwari, Neeraj K., Lakshmi Vadladi, Amrutha, Vaishnava, C. S., Vishwakarma, Sandeep, and Waratkar, Gaurav

Published
2024
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4. Brill's Companion to the Reception of Vitruvius

Author

Ingrid Rowland, Sinclair Bell, Ingrid Rowland, and Sinclair Bell

Abstract

As a master of his discipline, the ancient Roman architect Vitruvius has been read widely for centuries. This collection of essays by an international team of experts investigates his influence and reception in ideas, artistic forms, and building practices from antiquity to modern day. The stories of influence told in these pages suggest that it is the unbridgeable gulf between the Vitruvian text and surviving monuments that makes reading the Ten Books so endlessly compelling. The contributors to this volume offer their own, original readings, which are organized into the five sections: transmission; translation; reception; practice; and Vitruvian topics.

Published
2024

5. Data-Intensive Radio Astronomy : Bringing Astrophysics to the Exabyte Era

Author

Eleni Vardoulaki, Marta Dembska, Alexander Drabent, Matthias Hoeft, Eleni Vardoulaki, Marta Dembska, Alexander Drabent, and Matthias Hoeft

Subjects
Astronomy—Observations, Astrophysics, Quantitative research, Sampling (Statistics), Computer science
Abstract

Radio astronomy is irreversibly moving towards the exabyte era. In the advent of all-sky radio observations, efficient tools and methods to manage the large data volume generated have become imperative. This book brings together the knowledge of several different research fields to present an overview of current state-of-the-art methods in data-intensive radio astronomy. Its approach is comprehensive and data-centric, offering a coherent look at the four distinct parts of the data lifecycle: Data creation, storage and archivesData processingPost-processing and data analysisData access and reuse Large data management has been the topic of discussion within the astronomical community for decades. Some relevant areas explored in this volume are: ongoing technological innovations in interferometers and computing facilities; difficulties and possible solutions for the huge processing demands of radio telescope projects such as LOFAR, MeerKat, ASKAP; concepts for reliable and fast storage for archiving; and more. Written by experts across astrophysics, high-energy particle physics, data science, and computer science, this volume will help researchers and advanced students better understand the current state of data-intensive radio astronomy and tackle the major problems that may arise from future instruments.

Published
2024

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