Ergonomic Evaluation of the General Purpose Workstation on a Space Mission

1995 ◽  
Vol 39 (10) ◽  
pp. 664-668
Author(s):  
Mihriban Whitmore ◽  
Frances E. Mount
Keyword(s):  
Video Analysis ◽  
Materials Science ◽  
Space Mission ◽  
General Purpose ◽  
Objective Data ◽  
Task Distribution ◽  
Workstation Design ◽  
Postural Changes ◽  
Ergonomic Evaluation

The Human Factors and Ergonomics Laboratory (HFEL) at the Johnson Space Center conducted an ergonomic evaluation of the General Purpose Workstation (GPWS), a glovebox-type workstation flown on one of the Spacelab Life Sciences missions. The HFEL study consisted of: (1) Crew evaluations via pre-flight, in-flight questionnaire and structured post-flight interview, and (2) Video analysis. Findings indicate that the workstation design was acceptable for performing dissection tasks. The crew reported that the task distribution between operators was completely acceptable. Based on the video analysis and the crew comments, the glove interface was found to be critical for crew comfort. A follow-up evaluation is planned for an upcoming mission to evaluate a materials science glovebox and the design impact on posture. Additional microgravity evaluations are planned to obtain objective data on postural changes while working at different gloveboxes.

Postural Changes in Essential Hypertension under Treatment and their Effect on the Renogram

1971 ◽  
Vol 10 (01) ◽  
pp. 39-46
Author(s):  
C. Alexandrou ◽  
E. Papadakis ◽  
E. Gyftaki ◽  
J. Darsinos
Keyword(s):  
Renal Function ◽  
Essential Hypertension ◽  
Early Diagnosis ◽  
Postural Hypotension ◽  
Antihypertensive Treatment ◽  
Normal Subjects ◽  
Upright Position ◽  
Postural Changes ◽  
Significant Impairment

SummaryRadioisotope renograms were obtained in the upright and prone position in 9 normal subjects, in 5 patients with untreated essential hypertension and in 21 hypertensives under treatment, showing moderate postural hypotension.No significant renographic change were seen in the two positions in normal subjects and untreated hypertensives. Treated hypertensives with postural hypotension showed significant impairment of renal function in the upright position in 15 cases and no change in 6. Renal creatinine clearance was lower in the group that showed renographic changes. Renography in the upright position is suggested as a convenient test for early diagnosis and follow-up of the adverse effects of antihypertensive treatment.

scholarly journals The need for a multi-purpose, optical–NIR space facility after HST and JWST

2021 ◽  
Author(s):  
Knud Jahnke ◽  
Oliver Krause ◽  
Hans-Walter Rix ◽  
Frédéric Courbin ◽  
Adriano Fontana ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Hubble Space Telescope ◽  
Hubble Constant ◽  
White Paper ◽  
Space Mission ◽  
General Purpose ◽  
List Type ◽  
Space Telescope ◽  
Readiness Level ◽  
Visible Wavelengths

AbstractIn the early 2030s, after the end of operations for the epochal Hubble Space Telescope and the long-anticipated James Webb Space Telescope, astrophysics will lose access to a general purpose high-spatial resolution space observatory to cover the UV–optical–NIR wavelength range with a variety of imaging bandpasses and high-multiplexing mid-resolution spectroscopy. This will greatly impact astrophysical “discovery space” at visible wavelengths, in stark contrast to progress at most other wavelengths enabled by groundbreaking new facilities between 2010 and 2030. This capability gap will foreseeably limit progress in a number of fundamental research directions anticipated to be pressing in the 2030’s and beyond such as: What are the histories of star formation and cosmic element production in nearby galaxies? What can we learn about the nature of dark matter from dwarf galaxies? What is the local value of the Hubble Constant? A multi-purpose optical–NIR imaging and multiplexed spectroscopy Workhorse Camera (HWC) onboard NASA’s 4m-class Habitable Exoplanet Observatory (HabEx) space mission would provide access to these required data. HabEx is currently under study by NASA for the US Decadal Survey on Astronomy and Astrophysics 2020, and if selected would launch around 2035. Aside from its direct imaging of Earth-like exoplanets, it will have a general-observatory complement of instrumentation. The versatile Workhorse Camera will provide imaging and R$\sim $ ∼ 1000 spectroscopy from 370nm to 1800nm, diffraction-limited over the whole wavelength range, with simultaneous observations of the visible and NIR. Spectroscopic multiplexing will be achieved through microshutter arrays. All necessary HWC technology is already at Technology Readiness Level 5, hence technological risks are low. HWC has a rough-order-of-magnitude (ROM) cost of 300 M€, and could be European-funded within the cost envelope of an ESA S-class mission in the Voyage 2050 program, with matching funds by national funding agencies to construct HWC by a European instrument consortium. This White Paper is intended to put a European HabEx Workhorse Camera into ESA’s considerations. If ESA shares the wide interest and if HabEx were to be selected by NASA, there would be ample time to identify interested institutes for a European instrument consortium, including MPIA, to design, finance, and build the HabEx Workhorse Camera.

scholarly journals Beyond Intra-modality: A Survey of Heterogeneous Person Re-identification

2020 ◽  
Author(s):  
Zheng Wang ◽  
Zhixiang Wang ◽  
Yinqiang Zheng ◽  
Yang Wu ◽  
Wenjun Zeng ◽  
...  
Keyword(s):  
Video Analysis ◽  
State Of The Art ◽  
Future Research ◽  
Low Resolution ◽  
Research Directions ◽  
Comprehensive Review ◽  
Practical Applications ◽  
Future Research Directions

An efficient and effective person re-identification (ReID) system relieves the users from painful and boring video watching and accelerates the process of video analysis. Recently, with the explosive demands of practical applications, a lot of research efforts have been dedicated to heterogeneous person re-identification (Hetero-ReID). In this paper, we provide a comprehensive review of state-of-the-art Hetero-ReID methods that address the challenge of inter-modality discrepancies. According to the application scenario, we classify the methods into four categories --- low-resolution, infrared, sketch, and text. We begin with an introduction of ReID, and make a comparison between Homogeneous ReID (Homo-ReID) and Hetero-ReID tasks. Then, we describe and compare existing datasets for performing evaluations, and survey the models that have been widely employed in Hetero-ReID. We also summarize and compare the representative approaches from two perspectives, i.e., the application scenario and the learning pipeline. We conclude by a discussion of some future research directions. Follow-up updates are available at https://github.com/lightChaserX/Awesome-Hetero-reID

High Resolution FIB as a General Materials Science Tool

1998 ◽  
Vol 4 (S2) ◽  
pp. 492-493 ◽  
Author(s):  
M.W. Phaneuf ◽  
J. Li ◽  
T. Malis
Keyword(s):  
Integrated Circuit ◽  
Focused Ion Beam ◽  
Materials Science ◽  
Ion Beam ◽  
General Purpose ◽  
Ion Source ◽  
Specimen Preparation ◽  
Ion Beam Sputtering ◽  
Imaging Characteristics ◽  
Beam Sputtering

Focused Ion Beam or FIB systems have been used in integrated circuit production for some time. The ability to combine rapid, precision focused ion beam sputtering or gas-assisted ion etching with focused ion beam deposition allows for rapid-prototyping of circuit modifications and failure analysis of defects even if they are buried deep within the chip's architecture. Inevitably, creative TEM researchers reasoned that a FIB could be used to produce site specific parallel-sided, electron transparent regions, thus bringing about the rather unique situation wherein the specimen preparation device often was worth as much as the TEM itself.More recently, FIB manufacturers have concentrated on improving the resolution and imaging characteristics of these instruments, resulting in a more general-purpose characterization tool. The Micrion 2500 FIB system used in this study is capable of 4 nm imaging resolution using either secondary electron or secondary ions, both generated by a 50 kV liquid metal gallium ion source.

A Prototype Taxonomy of Training Device Visual Systems

1987 ◽  
Vol 31 (2) ◽  
pp. 238-242
Author(s):  
J. Peter Kincaid ◽  
Dee H. Andrews ◽  
Richard Gilson
Keyword(s):  
Visual System ◽  
State Of The Art ◽  
Video Quality ◽  
General Purpose ◽  
Training Requirements ◽  
Training Requirement ◽  
Computer Scientists ◽  
And Training ◽  
System Characteristics

This paper describes and illustrates an aid (currently in prototype form) to communicate to designers and users of training devices what visual system types are currently available and appropriate for different training requirements. The aid is based on a taxonomy of visual imagery which addresses fidelity, cost and training effectiveness issues. The taxonomy includes a variety of visual scene generations from general purpose microcomputer-based imagery to dedicated state-of-the-art computer systems imagery. The scenes produced by these systems span a spectrum of video quality and costs. The aid, and the taxonomy on which it is based, is intended to help designers and the ultimate users to select relevant visual system characteristics, e.g., matching the visual system design to the training requirement. It is also intended to be useful for interdisciplinary discussion among visual engineers, computer scientists, educational specialists, human factors engineers/psychologists and program analysts. There are follow-up plans to refine the taxonomy and further develop and validate the aid.

scholarly journals Approaching coupled cluster accuracy with a general-purpose neural network potential through transfer learning

2019 ◽  
Author(s):  
Justin S Smith ◽  
Benjamin T. Nebgen ◽  
Roman Zubatyuk ◽  
Nicholas Lubbers ◽  
Christian Devereux ◽  
...  
Keyword(s):  
Neural Network ◽  
Transfer Learning ◽  
Materials Science ◽  
Chemical Space ◽  
General Purpose ◽  
Learning Techniques ◽  
Mechanical Methods ◽  
Cluster Accuracy ◽  
Large Systems ◽  
Chemical And Biological Systems

<p>Computational modeling of chemical and biological systems at atomic resolution is a crucial tool in the chemist's toolset. The use of computer simulations requires a balance between cost and accuracy: quantum-mechanical methods provide high accuracy but are computationally expensive and scale poorly to large systems, while classical force fields are cheap and scalable, but lack transferability to new systems. Machine learning can be used to achieve the best of both approaches. Here we train a general-purpose neural network potential (ANI-1ccx) that approaches CCSD(T)/CBS accuracy on benchmarks for reaction thermochemistry, isomerization, and drug-like molecular torsions. This is achieved by training a network to DFT data then using transfer learning techniques to retrain on a dataset of gold standard QM calculations (CCSD(T)/CBS) that optimally spans chemical space. The resulting potential is broadly applicable to materials science, biology and chemistry, and billions of times faster<i></i>than CCSD(T)/CBS calculations. </p>

scholarly journals Radial velocity follow-up for confirmation and characterization of transiting exoplanets

2008 ◽  
Vol 4 (S253) ◽  
pp. 129-139 ◽  
Author(s):  
François Bouchy ◽  
Claire Moutou ◽  
Didier Queloz ◽  
Keyword(s):  
High Resolution ◽  
Radial Velocity ◽  
Space Mission ◽  
High Resolution Spectroscopy

AbstractRadial Velocity follow-up is essential to establish or exclude the planetary nature of a transiting companion as well as to accurately determine its mass. Here we present some elements of an efficient Doppler follow-up strategy, based on high-resolution spectroscopy, devoted to the characterization of transiting candidates. Some aspects and results of the radial velocity follow-up of the CoRoT space mission are presented in order to illustrate the strategy used to deal with the zoo of transiting candidates.

A follow-up study of the first 70 admissions to a general purpose adolescent unit

1985 ◽  
Vol 8 (4) ◽  
pp. 333-345 ◽  
Author(s):  
Nicholas Pyne ◽  
Rosemary Morrison ◽  
Patricia Ainsworth
Keyword(s):  
General Purpose ◽  
Follow Up Study

The ExoClock Project: an open integrated platform for maintaining the Ariel target ephemerides with contributions from the public

2020 ◽  
Author(s):  
Anastasia Kokori
Keyword(s):  
Space Mission ◽  
Lessons Learned ◽  
Current Status ◽  
The Public ◽  
Integrated Platform ◽  
First Results ◽  
Available Resources

&lt;div dir=&quot;ltr&quot;&gt;The ExoClock Project (www.exoclock.space) is an open, integrated, and interactive platform, designed to maintain the ephemerides accuracy of the Ariel targets. Ariel is ESA's medium class space mission prepared for launch in 2028. The main aim of the mission is to characterise a large number of exoplanets to better understand their nature. ExoClock aims to provide transit mid-time predictions for Ariel by collecting all currently available data (literature observations, observations conducted for other purposes, both from ground and space) and by efficiently planning dedicated efforts to follow-up the riel targets. ExoClock is open to contributions from a variety of audiences &amp;#8212;&amp;#160; professional, amateur and industry partners &amp;#8212; aiming to make the best use of all available resources towards delivering a verified list of ephemerides for the Ariel targets before the launch of the mission.&amp;#160;&lt;/div&gt; &lt;div&gt;In this presentation strategies, tools and the current status of the ExoClock project will be described in detail. In addition, the first results will be presented briefly and finally, lessons learned and the potential of using similar strategies in other projects will be discussed.&lt;/div&gt;

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