High-level accuracy measurement of the absolute frequency of the red He-Ne/I 2 laser stabilized

1993 ◽  
Author(s):  
Jean-Jacques Zondy ◽  
M. Abed ◽  
Ouali Acef ◽  
D. G. Rovera ◽  
A. H. Gerard ◽  
...  
Keyword(s):  
Absolute Frequency ◽  
Accuracy Measurement ◽  
The Absolute ◽  
High Level

Measurement of the absolute frequency of the methane E-line at 88 THz

1998 ◽  
Vol 151 (4-6) ◽  
pp. 229-234 ◽  
Author(s):  
P.S. Ering ◽  
D.A. Tyurikov ◽  
G. Kramer ◽  
B. Lipphardt
Keyword(s):  
Absolute Frequency ◽  
The Absolute

scholarly journals Characterization of the absolute frequency stability of an individual reference cavity

2009 ◽  
Vol 34 (2) ◽  
pp. 190 ◽  
Author(s):  
T. Liu ◽  
Y. N. Zhao ◽  
V. Elman ◽  
A. Stejskal ◽  
L. J. Wang
Keyword(s):  
Frequency Stability ◽  
Absolute Frequency ◽  
Reference Cavity ◽  
The Absolute

scholarly journals ATControl Software for Leica AT40x Laser Trackers

2015 ◽  
Vol 14 (2) ◽  
pp. 9-20
Author(s):  
Filip Dvořáček
Keyword(s):  
Programming Language ◽  
Metrological Traceability ◽  
Geospatial Data ◽  
Laser Tracker ◽  
Functional Features ◽  
The Absolute ◽  
High Level ◽  
Laser Trackers

The paper describes a software called ATControl which is based on the Matworks Matlab high-level programming language. This software is under constant development by the author in order to collect geospatial data by measuring with the absolute laser tracker Leica AT40x (AT401, AT402). Commercially available software solutions are shortly reviewed and the reasons for developing the new controlling application are discussed. Advantages of ATControl concerning metrological traceability of measured distances are stated. Key functional features of software are introduced.

scholarly journals Determination of the Absolute Configuration of 19-OH-(-)-Eburnamonine Using a Combination of Residual Dipolar Couplings, DFT Chemical Shift Predictions, and Chiroptics

2012 ◽  
Vol 7 (6) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Pablo Trigo-Mouriño ◽  
Roxana Sifuentes ◽  
Armando Navarro-Vázquez ◽  
Chakicherla Gayathri ◽  
Helena Maruenda ◽  
...  
Keyword(s):  
Chemical Shift ◽  
Absolute Configuration ◽  
Residual Dipolar Couplings ◽  
Indole Alkaloid ◽  
Dipolar Couplings ◽  
The Absolute ◽  
Natural Derivative ◽  
High Level ◽  
Configuration And Conformation

19-OH-(-)-eburnamonine 1 is a new indole alkaloid isolated from Bonafusia macrocalyx. A natural derivative from (-)-eburnamonine for which absolute configuration and conformation has been determined by making use of residual dipolar couplings enhanced NMR, circular dichroism spectra and high-level computations.

scholarly journals Using Relative Tie Strength to Identify Core Teams of Scientific Research

2019 ◽  
Vol 14 (23) ◽  
pp. 33
Author(s):  
Meishu Zhang ◽  
Yu Jia ◽  
Nianxin Wang ◽  
Shilun Ge
Keyword(s):  
Scientific Research ◽  
Absolute Threshold ◽  
Tie Strength ◽  
Threshold Method ◽  
Research Teams ◽  
Team Members ◽  
The Absolute ◽  
New Perspective ◽  
Cooperative Relationship ◽  
High Level

In China, it has long become imperative for the management of education and science and technology to build high-level scientific and technological innovation teams. Scientifically and accurately identifying core scientific research teams is an important condition for cultivating and building such teams. The absolute threshold method (e.g., c-level clique at, n- clique, k-core) is the prevailing means of identifying core teams and their core members. In fact, effects such as “the preference-dependent effect”, “the apostle effect” and “the star effect”, the cooperative relationship between the researchers is not even. This study, based on the co-authorship network, found that not choosing the absolute threshold properly can easily lead to poor identification of core members of some teams. Even worse, when the absolute threshold is too large, this “uniform” evaluation criterion of tie strength results in the elimination of some core teams in some disciplines. This paper uses relative tie strength to identify core scientific research teams from a new perspective, which can effectively avoid the situation of some core team members being ignored because of the mandatory requirements of the absolute tie strength among members, and can also solve the challenge of threshold selections for identifying different teams.

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