scholarly journals Joint Discussion 8: Stellar Evolution in Real Time, Part II: Explicit Evidences for Stellar Evolution

1998 ◽  
Vol 11 (1) ◽  
pp. 342-342
Keyword(s):  
Real Time ◽  
Present State ◽  
Stellar Evolution ◽  
Time Base ◽  
Evolutionary Studies ◽  
Dynamical Spin ◽  
Time Part

This Part of the report contains the summaries of the most affirmative conclusions about recognized evidences for stellar evolution. We would certainly prefer to know that we have actually discovered this or that piece of evidence but it can be equally valuable to know that the present state of knowledge forbids a conclusion of the sort which we wish. Not surprisingly, there are instances for which we are lucky to be able to make only a limiting statement about the matter. So affirmative here really means that a conclusion - positive or negative - has actually been attained. To the layman in stellar evolutionary studies it may be surprising that there exists such a diversity of evolutionary criteria - radiometric, spectrometric, orbital dynamical, spin dynamical - all with a defined time base available at the present day. It may be hoped that some of the conclusions summarized here will make their way routinely into undergraduate texts in the for seeable future and that tools such as the HRD or CMD will not appear as only static snapshots.

scholarly journals Joint Discussion 8: Stellar Evolution in Real Time, Part IV Miscellany

1998 ◽  
Vol 11 (1) ◽  
pp. 377-377
Keyword(s):  
Real Time ◽  
Stellar Evolution ◽  
Main Theme ◽  
Secular Evolution ◽  
Time Part

For a number of interesting contributed papers at the JD8 it was not obvious at the meeting or later that their contents and conclusions are germane to the main theme of secular evolution evidences. The editors have decided that these papers should be listed by title only. They appear below in alphabetized order by (first or only) author.

scholarly journals Joint Discussion 8: Stellar Evolution in Real Time, Part I Explicit Evidences for Stellar Evolution

1998 ◽  
Vol 11 (1) ◽  
pp. 340-341
Author(s):  
E.F. Guinan ◽  
R.H. Koch
Keyword(s):  
Real Time ◽  
Stellar Evolution ◽  
Time Part

JD8 assembled for half-day sessions on August 22 & 23, 1997 in a satisfactory meeting hall. Between 350 and 400 delegates - about 50% larger than anticipated - attended most of the sessions. The theme of the meeting developed from initial conversations between R. H. Koch and Y. Kondo and was extended by E. F. Guinan. Opinions from the officers of Commissions 27 and 42 were favorable to seeking IAU approval and eventually the co-sponsoring Commissions came on board. In essence, all the organizing workers recognized that there did not exist a broad recognition that we really do know specific stars whose evolution we have actually perceived and that there are also statistical interpretations (not the conventional isochrones in an HRD or CMD) for ensembles of stars which lead to the same conclusion. The presentation compiled here is really a distillation of short offerings from the JD participants provided against a deadline which was regrettably close at hand. A full presentation of the meeting Proceedings will appear in The New Astronomy series of Elsevier. E. R. Jewell prepared the final files.

scholarly journals Joint Discussion 8: Stellar Evolution in Real Time, Part V: Conclusions

1998 ◽  
Vol 11 (1) ◽  
pp. 402-402
Keyword(s):  
Real Time ◽  
Stellar Evolution ◽  
Evolutionary Information ◽  
Science Technology ◽  
New Knowledge ◽  
Time Part ◽  
Technology Advances

There is no reason to believe that the prospects expressed in Part III are the ultimate ones for development of evidences about stellar evolutionary information. Instead, (and just as for all other domains of science) technology advances and the availability of funds and manpower will remain important discriminants for new knowledge. As it happened, a presentation of some significant and imminent and distant hardware programs was given at the JD8 and it has been chosen (out of sequence with its order in Kyoto)to end this report.

scholarly journals Joint Discussion 8: Stellar Evolution in Real Time, Part III: Implied Evidences

1998 ◽  
Vol 11 (1) ◽  
pp. 368-368
Keyword(s):  
Real Time ◽  
Stellar Evolution ◽  
Subject Matter ◽  
Theoretical Development ◽  
Observational Material ◽  
Time Part ◽  
Near Future

It is inevitable that understanding of some indicators of stellar evolution is not so definite as we could wish. This can be equally true of observational material and of the beginning and intermediate stages of theoretical development. Even though these matters may be arguable and untidy, they are not negligible and, in fact, represent obvious recognized opportunities for the near future. It is possible that these matters are really the most valuable consequence of the meeting. Subject matter of this kind was presented at the JD8, in both invited and contributed forms, and their summaries follow here in the same approximation to stellar evolution stages that characterized Part II.

scholarly journals Evaluating Latency in Multiprocessing Embedded Systems for the Smart Grid

Energies ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3322
Author(s):  
Sara Alonso ◽  
Jesús Lázaro ◽  
Jaime Jiménez ◽  
Unai Bidarte ◽  
Leire Muguira
Keyword(s):  
Operating System ◽  
Smart Grid ◽  
Real Time ◽  
Processing System ◽  
The Other ◽  
Programmable Logic ◽  
Detailed Characterization ◽  
Timing Constraint ◽  
Time Part

Smart grid endpoints need to use two environments within a processing system (PS), one with a Linux-type operating system (OS) using the Arm Cortex-A53 cores for management tasks, and the other with a standalone execution or a real-time OS using the Arm Cortex-R5 cores. The Xen hypervisor and the OpenAMP framework allow this, but they may introduce a delay in the system, and some messages in the smart grid need a latency lower than 3 ms. In this paper, the Linux thread latencies are characterized by the Cyclictest tool. It is shown that when Xen hypervisor is used, this scenario is not suitable for the smart grid as it does not meet the 3 ms timing constraint. Then, standalone execution as the real-time part is evaluated, measuring the delay to handle an interrupt created in programmable logic (PL). The standalone application was run in A53 and R5 cores, with Xen hypervisor and OpenAMP framework. These scenarios all met the 3 ms constraint. The main contribution of the present work is the detailed characterization of each real-time execution, in order to facilitate selecting the most suitable one for each application.

ESP "Smart Flow" Integrates Quality and Control Data for Diagnostics and Optimization in Real Time (Part of KwIDF Project)

2013 ◽  
Author(s):  
A Al-Jasmi ◽  
H. Nasr ◽  
H. K. Goel ◽  
G. Moricca ◽  
G. A. Carvajal ◽  
...  
Keyword(s):  
Real Time ◽  
Control Data ◽  
Time Part ◽  
And Control

scholarly journals Usability in 4D AR: Visualising Multi-temporal Real-time Geo-data in Augmented Reality Environments

2015 ◽  
Vol 9 (4) ◽  
pp. 23 ◽  
Author(s):  
Bernd Resch ◽  
Andreas Wichmann ◽  
Nicolas Göll
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
Temporal Variations ◽  
Time Base ◽  
Future Research ◽  
Time Data ◽  
Orientation Data ◽  
Information Density ◽  
Real Time Data ◽  
Multi Temporal

Even though advantages of 3D visualisation of multi-temporal geo-data versus 2D approaches have been widely proven, the particular pertaining challenge of real-time visualisation of geo-data in mobile Digital Earth applications has not been thoroughly tackled so far. In the emerging field of Augmented Reality (AR), research needs comprise finding the optimal information density, the interplay between orientation data in the background and other information layers, using the appropriate graphical variables for display, or selecting real-time base data with adequate quality and suitable spatial accuracy. In this paper we present a concept for integrating real-time data into 4D (three spatial dimensions plus time) AR environments, i.e., data with “high” spatial and temporal variations. We focus on three research challenges: 1.) high-performance integration of real-time data into AR; 2.) usability design in terms of displaying spatio-temporal developments and the interaction with the application; and 3.) design considerations regarding reality vs. virtuality, visualisation complexity and information density. We validated our approach in a prototypical application and extracted several limitations and future research areas including natural feature recognition, the cross-connection of (oftentimes monolithic) AR interface developments and well-established cartographic principles, or fostering the understanding of the temporal context in dynamic 4D Augmented Reality environments.

scholarly journals Evolution of the energy efficiency of LHCb’s real-time processing

2021 ◽  
Vol 251 ◽  
pp. 04009
Author(s):  
Roel Aaij ◽  
Daniel Hugo Cámpora Pérez ◽  
Tommaso Colombo ◽  
Conor Fitzpatrick ◽  
Vladimir Vava Gligorov ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Real Time ◽  
Lhcb Collaboration ◽  
Software Infrastructure ◽  
Real Time Processing ◽  
Time Processing ◽  
Lhcb Detector ◽  
Future Data ◽  
Time Part ◽  
The Impact

The upgraded LHCb detector, due to start datataking in 2022, will have to process an average data rate of 4 TB/s in real time. Because LHCb’s physics objectives require that the full detector information for every LHC bunch crossing is read out and made available for real-time processing, this bandwidth challenge is equivalent to that of the ATLAS and CMS HL-LHC software read-out, but deliverable five years earlier. Over the past six years, the LHCb collaboration has undertaken a bottom-up rewrite of its software infrastructure, pattern recognition, and selection algorithms to make them better able to efficiently exploit modern highly parallel computing architectures. We review the impact of this reoptimization on the energy efficiency of the realtime processing software and hardware which will be used for the upgrade of the LHCb detector. We also review the impact of the decision to adopt a hybrid computing architecture consisting of GPUs and CPUs for the real-time part of LHCb’s future data processing. We discuss the implications of these results on how LHCb’s real-time power requirements may evolve in the future, particularly in the context of a planned second upgrade of the detector.

scholarly journals Three Observations on Filming Tactility and Movement in Crafts-based Practice

2021 ◽  
Vol 14 (2) ◽  
Author(s):  
Wuon-Gean Ho
Keyword(s):  
Tacit Knowledge ◽  
Real Time ◽  
Point Of View ◽  
Time Base ◽  
Anatomical Position ◽  
The Gaze ◽  
Recording Process

This film makes three observations on the filming of tactility and movement in order to adequately convey tacit knowledge in embodied ways. The author, Wuon-Gean Ho, studied the craft of traditional woodblock printmaking in Japan, and demonstrates planning, carving and printing of a woodblock print. The first observation is that an alteration of the time-base of the film and subsequent manipulation of the soundscape can provide embodied affects. Secondly the film refers to the effect of mirror-touch-synaesthesia with close macro shots and intimate angles. Thirdly, the use of a birds’ eye point of view, with the hands of the artist in the same anatomical position as the viewers’ hands, enables the gaze of the viewer to mimic that of the maker, conveying haptic knowledge through poetic means.The voiceover to the film is made with deliberate reference to ASMR videos that engender a sense of intimacy. The non-objectivity of the recording process is commented upon. The conclusion is that constructed scenarios might convey more than real-time truthful indexical footage.

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