scholarly journals Measuring $\bar{g}$ with ${\rm AE\bar{g}IS}$, progress and perspectives

2014 ◽  
Vol 30 ◽  
pp. 1460262 ◽  
Author(s):  
D. Krasnický ◽  
S. Aghion ◽  
O. Ahlén ◽  
C. Amsler ◽  
A. Ariga ◽  
...  
Keyword(s):  
Production Method ◽  
Current Status ◽  
Gravity Measurement ◽  
Gravitational Acceleration ◽  
Short Term ◽  
Relative Precision ◽  
Weak Equivalence Principle ◽  
Experimental Apparatus ◽  
Antihydrogen Production ◽  
Near Future

[Formula: see text] experiment's main goal is to measure the local gravitational acceleration of antihydrogen [Formula: see text] and thus perform a direct test of the weak equivalence principle with antimatter. In the first phase of the experiment the aim is to measure [Formula: see text] with 1% relative precision. This paper presents the antihydrogen production method and a description of some components of the experiment, which are necessary for the gravity measurement. Current status of the [Formula: see text] experimental apparatus is presented and recent commissioning results with antiprotons are outlined. In conclusion we discuss the short-term goals of the [Formula: see text] collaboration that will pave the way for the first gravity measurement in the near future.

scholarly journals AEg̅IS latest results

2018 ◽  
Vol 181 ◽  
pp. 01037 ◽  
Author(s):  
F. Guatieri ◽  
S. Aghion ◽  
C. Amsler ◽  
G. Angela ◽  
G. Bonomi ◽  
...  
Keyword(s):  
Equivalence Principle ◽  
Gravitational Force ◽  
Current Status ◽  
High Precision Measurement ◽  
Charge Exchange Reaction ◽  
Weak Equivalence Principle ◽  
Experimental Apparatus ◽  
Spectroscopy Experiment ◽  
Stable Source ◽  
A Charge

The validity of the Weak Equivalence Principle (WEP) as predicted by General Relativity has been tested up to astounding precision using ordinary matter. The lack hitherto of a stable source of a probe being at the same time electrically neutral, cold and stable enough to be measured has prevented highaccuracy testing of the WEP on anti-matter. The AEg̅IS (Antimatter Experiment: Gravity, Interferometry, Spectroscopy) experiment located at CERN's AD (Antiproton Decelerator) facility aims at producing such a probe in the form of a pulsed beam of cold anti-hydrogen, and at measuring by means of a moiré deflectometer the gravitational force that Earth's mass exerts on it. Low temperature and abundance of the H̅ are paramount to attain a high precision measurement. A technique employing a charge-exchange reaction between antiprotons coming from the AD and excited positronium atoms is being developed at AEg̅IS and will be presented hereafter, alongside an overview of the experimental apparatus and the current status of the experiment

scholarly journals AEgIS at ELENA: outlook for physics with a pulsed cold antihydrogen beam

2018 ◽  
Vol 376 (2116) ◽  
pp. 20170274 ◽  
Author(s):  
M. Doser ◽  
S. Aghion ◽  
C. Amsler ◽  
G. Bonomi ◽  
R. S. Brusa ◽  
...  
Keyword(s):  
Charge Exchange ◽  
High Efficiency ◽  
Efficient Production ◽  
Radial Compression ◽  
Gravitational Acceleration ◽  
Technical Developments ◽  
Direct Measurements ◽  
Production Scheme ◽  
Antihydrogen Production ◽  
Near Future

The efficient production of cold antihydrogen atoms in particle traps at CERN’s Antiproton Decelerator has opened up the possibility of performing direct measurements of the Earth’s gravitational acceleration on purely antimatter bodies. The goal of the AEgIS collaboration is to measure the value of g for antimatter using a pulsed source of cold antihydrogen and a Moiré deflectometer/Talbot–Lau interferometer. The same antihydrogen beam is also very well suited to measuring precisely the ground-state hyperfine splitting of the anti-atom. The antihydrogen formation mechanism chosen by AEgIS is resonant charge exchange between cold antiprotons and Rydberg positronium. A series of technical developments regarding positrons and positronium (Ps formation in a dedicated room-temperature target, spectroscopy of the n =1–3 and n =3–15 transitions in Ps, Ps formation in a target at 10 K inside the 1 T magnetic field of the experiment) as well as antiprotons (high-efficiency trapping of , radial compression to sub-millimetre radii of mixed plasmas in 1 T field, high-efficiency transfer of to the antihydrogen production trap using an in-flight launch and recapture procedure) were successfully implemented. Two further critical steps that are germane mainly to charge exchange formation of antihydrogen—cooling of antiprotons and formation of a beam of antihydrogen—are being addressed in parallel. The coming of ELENA will allow, in the very near future, the number of trappable antiprotons to be increased by more than a factor of 50. For the antihydrogen production scheme chosen by AEgIS, this will be reflected in a corresponding increase of produced antihydrogen atoms, leading to a significant reduction of measurement times and providing a path towards high-precision measurements. This article is part of the Theo Murphy meeting issue ‘Antiproton physics in the ELENA era’.

scholarly journals Decline in Marriage Associated with the COVID-19 Pandemic in the United States

2020 ◽  
Vol 6 ◽  
pp. 237802312098032
Author(s):  
Brandon G. Wagner ◽  
Kate H. Choi ◽  
Philip N. Cohen
Keyword(s):  
United States ◽  
The United States ◽  
Cumulative Number ◽  
Short Term ◽  
Know How ◽  
The Social ◽  
Reporting Delays ◽  
Social Upheaval ◽  
Near Future ◽  
Do So

In the social upheaval arising from the coronavirus disease 2019 (COVID-19) pandemic, we do not yet know how union formation, particularly marriage, has been affected. Using administration records—marriage certificates and applications—gathered from settings representing a variety of COVID-19 experiences in the United States, the authors compare counts of recorded marriages in 2020 against those from the same period in 2019. There is a dramatic decrease in year-to-date cumulative marriages in 2020 compared with 2019 in each case. Similar patterns are observed for the Seattle metropolitan area when analyzing the cumulative number of marriage applications, a leading indicator of marriages in the near future. Year-to-date declines in marriage are unlikely to be due solely to closure of government agencies that administer marriage certification or reporting delays. Together, these findings suggest that marriage has declined during the COVID-19 outbreak and may continue to do so, at least in the short term.

scholarly journals Discussion: Producer Bargaining: Its Current Status and Distribution of Benefits

1973 ◽  
Vol 5 (1) ◽  
pp. 45-46
Author(s):  
H. M. Harris
Keyword(s):  
Present Status ◽  
Dairy Industry ◽  
Current Status ◽  
Complete Analysis ◽  
Key Aspects ◽  
Near Future

We should be indebted to Dr. Berry for his cogent observations on some key aspects of the producer bargaining issue. At the same time, however, I would be remiss in my role as discussant if I failed to point out two major shortcomings of his paper. First, the current status of producer bargaining is treated incompletely. Second, and more glaring, is the complete omission of any discussion of the distribution of benefits of agricultural bargaining.It should be mentioned that both these shortcomings could be remedied simply by changing the title of the paper. For example, if the address was entitled, “Producer Bargaining: Its Present Status in the Dairy Industry,” these two criticisms would be largely unwarranted. I must also confess that if the assigned roles of Professor Berry and myself were reversed, he would very likely be levying the same comments about my presentation. For a complete analysis of the assigned topic involves a Herculean task – but a task with which we must come to grips in the near future.

scholarly journals See the near future: A short-term predictive methodology to traffic load in ITS

2017 ◽  
Author(s):  
Xun Zhou ◽  
Changle Li ◽  
Zhe Liu ◽  
Tom H. Luan ◽  
Zhifang Miao ◽  
...  
Keyword(s):  
Traffic Load ◽  
Short Term ◽  
Near Future

A directed content analysis of viewpoints on the changing patterns of Lean Six Sigma research

2019 ◽  
Vol 31 (4) ◽  
pp. 641-654 ◽  
Author(s):  
Bryan A. Rodgers ◽  
Jiju Antony ◽  
Zhen He ◽  
Elizabeth A. Cudney ◽  
Chad Laux
Keyword(s):  
Continuous Improvement ◽  
Six Sigma ◽  
Design Methodology ◽  
Lean Six Sigma ◽  
Current Status ◽  
Short Term ◽  
Content Type ◽  
Changing Patterns ◽  
Practical Implications

Purpose The purpose of this paper, builds on previous studies that explored the research patterns over 15 years, is to consider the current status of the integration of Lean and Six Sigma. More specifically, this research addresses whether Lean and Six Sigma are stronger together and explores the reasons why Lean researchers and practitioners may be less likely to integrate Six Sigma in their work. Design/methodology/approach The research utilises a survey of 25 established and respected academics and practitioners from 16 countries. The questionnaire is analysed using a direct content approach and coded in NVivo. Findings The findings suggest that challenges may lie in the perception and understanding of statistics as well as short-term rather than long-term focus on improvement. The findings also suggest that academics and practitioners believe that Lean Six Sigma has developed over time and will continue to develop and improve as a methodology rather than being replaced with a new methodology. Research limitations/implications The survey has a sample size of 25, albeit all respondents are established and very experienced practitioners and academics. Practical implications For organisations that are introducing or refreshing their continuous improvement initiatives, this research identifies some of the challenges and provides the opportunity to address them to maximise the opportunities for success and sustainability. Originality/value The value of this paper is that it further addresses the debate over the integration of Lean and Six Sigma for many organisations which still employ Lean alone, but beyond this it explores how they will continue to develop and whether they are a permanent edition to the quality management landscape or a transition to something else.

scholarly journals Visions of Human Futures in Space and SETI

2017 ◽  
Author(s):  
Jason T. Wright ◽  
Michael P. Oman-Reagan
Keyword(s):  
Solar System ◽  
Science Fiction ◽  
Dark Matter Particle ◽  
Short Term ◽  
National Science ◽  
The Galaxy ◽  
Near Future ◽  
Far Future ◽  
Made In

We discuss how visions for the futures of humanity in space and SETI are intertwined, and are shaped by prior work in the fields and by science fiction. This appears in the language used in the fields, and in the sometimes implicit assumptions made in discussions of them. We give examples from articulations of the so-called Fermi Paradox, discussions of the settlement of the Solar System (in the near future) and the Galaxy (in the far future), and METI. We argue that science fiction, especially the campy variety, is a significant contributor to the ‘giggle factor’ that hinders serious discussion and funding for SETI and Solar System settlement projects. We argue that humanity's long-term future in space will be shaped by our short-term visions for who goes there and how. Because of the way they entered the fields, we recommend avoiding the term ‘colony’ and its cognates when discussing the settlement of space, as well as other terms with similar pedigrees. We offer examples of science fiction and other writing that broaden and challenge our visions of human futures in space and SETI. In an appendix, we use an analogy with the well-funded and relatively uncontroversial searches for the dark matter particle to argue that SETI's lack of funding in the national science portfolio is primarily a problem of perception, not inherent merit.Also on arXiv: https://arxiv.org/abs/1708.05318Please cite this version:Wright, Jason T., and Michael P. Oman-Reagan. “Visions of Human Futures in Space and SETI.” International Journal of Astrobiology, 2017, 1–12. doi:10.1017/S1473550417000222.

scholarly journals Current Status of Short-term Countermeasures for Nuclear or Radiological Emergencies

2006 ◽  
Vol 41 (2) ◽  
pp. 76-87 ◽  
Author(s):  
Masanori KIMURA ◽  
Toshimitsu HOMMA
Keyword(s):  
Current Status ◽  
Short Term

scholarly journals A Historical Overview Upon the Use of Amphetamine Derivatives in the Treatment of Obesity

2020 ◽  
Author(s):  
Ștefana Stăcescu ◽  
Gabriel Hancu ◽  
Denisa Podar ◽  
Ștefania Todea ◽  
Amelia Tero-Vescan
Keyword(s):  
High Efficiency ◽  
Lifestyle Modification ◽  
Term Treatment ◽  
Current Status ◽  
Historical Overview ◽  
Short Term ◽  
Short Term Treatment ◽  
Treatment Of Obesity ◽  
Amphetamine Derivatives ◽  
The One

Relatively few medications are available for the management of obesity and all are indicated as adjuncts to increased physical activity, caloric restriction and lifestyle modification. Among different weight-loss drugs, the most intriguing and controversial class is the one of anorexic amphetamines, due to their high efficiency but also relevant side-effects. Several previously approved anorexic amphetamines like fenfluramine, phenylpropanolamine, phenmetrazine and sibutramine have been withdrawn from the market due to unanticipated adverse effects. Nowadays only four amphetamine derivatives are approved for short-term treatment of obesity: amfepramone, benzphetamine, phendimetrazine and phentermine. The article provides an overview of both the history, and the current status, of the use of amphetamine derivatives in the obesity pharmacotherapy. J Pharm Care 2019; 7(3): 75-82.

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