scholarly journals The Impact of Gaia and LSST on Binaries and Exoplanets

2011 ◽  
Vol 7 (S282) ◽  
pp. 33-40
Author(s):  
L. Eyer ◽  
P. Dubath ◽  
N. Mowlavi ◽  
P. North ◽  
A. Triaud ◽  
...  

AbstractTwo upcoming large scale surveys, the ESA Gaia and LSST projects, will bring a new era in astronomy. The number of binary systems that will be observed and detected by these projects is enormous, estimations range from millions for Gaia to several tens of millions for LSST. We review some tools that should be developed and also what can be gained from these missions on the subject of binaries and exoplanets from the astrometry, photometry, radial velocity and their alert systems.

e-Finanse ◽  
2018 ◽  
Vol 14 (4) ◽  
pp. 67-76
Author(s):  
Piotr Bartkiewicz

AbstractThe article presents the results of the review of the empirical literature regarding the impact of quantitative easing (QE) on emerging markets (EMs). The subject is of interest to policymakers and researchers due to the increasingly larger role of EMs in the world economy and the large-scale capital flows occurring after 2009. The review is conducted in a systematic manner and takes into consideration different methodological choices, samples and measurement issues. The paper puts the summarized results in the context of transmission channels identified in the literature. There are few distinct methodological approaches present in the literature. While there is a consensus regarding the direction of the impact of QE on EMs, its size and durability have not yet been assessed with sufficient precision. In addition, there are clear gaps in the empirical findings, not least related to relative underrepresentation of the CEE region (in particular, Poland).


Author(s):  
Sylvain K. Cibangu ◽  
Mark Hepworth ◽  
Donna Champion

In recent years, the rise of information and communication technologies (ICTs) contrasted with the dire living conditions of the world's poorest has been the subject of debate among industry and academia. However, despite the amount of writings produced on mobile phones, Western bias is surprisingly unbridledly prevailing alongside the fêted dissemination of mobile phones. Expansive literature tends to present the rapid adoption of mobile phones among rural individuals, with little to no indication of how local values and voices are respected or promoted. We undertook semi-structured interviews with 16 rural chiefs to inquire into ways in which mobile phones enabled socio-economic development in the rural Congo. Rather than using quantitative, large-scale, or top-down data, we sought to give voice to chiefs themselves about the role of mobile phones. We found that Western bias dominates the literature and deployment of mobile phones more than usually acknowledged. We suggested some paths forward, while bringing the African communal Utu or Ubuntu culture to the center stage.


2012 ◽  
Vol 13 (1) ◽  
pp. 50-63 ◽  
Author(s):  
Shan C. Sutton

Introduction Few writings within the realms of archives and special collections have reverberated throughout the field to the degree of Mark A. Greene and Dennis Meissner’s 2005 article “More Product, Less Process: Revamping Traditional Archival Processing.”1 Its clarion call to shift archival arrangement and description away from time-consuming, detailed processes toward rapid, minimalist strategies was met with both cheers and groans that continue unabated. In a sign of its ubiquity, the approach advocated by Greene and Meissner is now simply referred to as “MPLP,” and its implementation is the subject of ongoing discussion in numerous venues, including professional journals, conference . . .


2020 ◽  
Vol 496 (4) ◽  
pp. 4442-4467 ◽  
Author(s):  
Sz Csizmadia

ABSTRACT Transit and Light Curve Modeller (TLCM), a computer code with the purpose of analysing photometric time series of transits simultaneously with the out-of-transit light variations and radial velocity curves of transiting/eclipsing binary systems, is presented here. Joint light-curve and radial velocity fits are possible with it. The code is based on the combination of a genetic algorithm and simulated annealing. Binning, beaming, reflection, and ellipsoidal effects are included. Both objects may have their own luminosities and therefore one can use TLCM to analyse the eclipses of both exoplanet and well-detached binary systems. A simplified Rossiter–McLaughlin effect is included in the radial velocity fit, and drifts and offsets of different instruments can also be fitted. The impact of poorly known limb darkening on the Rossiter–McLaughlin effect is shortly studied. TLCM is able to manage red-noise effects via wavelet analysis. It is also possible to add parabolic or user-defined baselines and features to the code. I also predict that light variations due to beaming in some systems exhibiting radial velocity drift should be observed by, e.g. PLATO. The fit of the beaming effect is improved by invoking a physical description of the ellipsoidal effects, which has an impact on the modelling of the relativistic beaming; I also point out the difficulties that are stemming from the fact that beaming and first-order reflection effects have the same form of time dependence. Recipe is given, which describes how to analyse grazing transit events. The code is freely available.


2018 ◽  
Vol 5 (2) ◽  
pp. 234-243 ◽  
Author(s):  
Iyanatul Islam

This article reviews the international evidence on the impact of automation on employment and interprets the Indian experience in light of such evidence. It argues that the apocalyptic notion that one faces large-scale technological unemployment either in India or globally is exaggerated. On the other hand, the romantic notion that new technology–especially in the form of on-line work–will create a new era of prosperity in India driven by digitally-enabled micro-entrepreneurs is unlikely to materialize. This does not mean that new employment opportunities created by digital platforms should be shunned. They should be carefully nurtured by novel regulatory frameworks that seek to improve wages and working conditions for the growing community of online workers in India. This should be complemented by adequate investments in digital infrastructure.


2020 ◽  
Vol 497 (3) ◽  
pp. 4009-4021
Author(s):  
M Lisogorskyi ◽  
S Boro Saikia ◽  
S V Jeffers ◽  
H R A Jones ◽  
J Morin ◽  
...  

ABSTRACT The Doppler method of exoplanet detection has been extremely successful, but suffers from contaminating noise from stellar activity. In this work, a model of a rotating star with a magnetic field based on the geometry of the K2 star ϵ Eridani is presented and used to estimate its effect on simulated radial velocity (RV) measurements. A number of different distributions of unresolved magnetic spots were simulated on top of the observed large-scale magnetic maps obtained from 8 yr of spectropolarimetric observations. The RV signals due to the magnetic spots have amplitudes of up to 10 m s−1, high enough to prevent the detection of planets under 20 Earth masses in temperate zones of solar-type stars. We show that the RV depends heavily on spot distribution. Our results emphasize that understanding stellar magnetic activity and spot distribution is crucial for the detection of Earth analogues.


2020 ◽  
Vol 4 (2) ◽  
pp. 20-27
Author(s):  
Vladislav E. Stepanov

The subject. Implementation of Soviet labor law in the context of totalitarianism. Particular attention is paid to the formation of a repressive model of regulation of private law relations. The study of this problem is extremely important from the point of view of the totalitarian past of our country, covering all spheres of public life and entailing large-scale tragic consequences. The purpose of the article is to confirm or disprove hypothesis that a totalitarian political regime seriously impacts on the essential characteristics of private law branches. The theoretical and methodological basis of the study includes the principles of objectivity and historicism, the formal logical interpretation of the Soviet legal acts concerning labor relations and the method of system analysis, which allows us to reveal the subject of research comprehensively. The main results, scope of application. During the formation of the Soviet totalitarian regime, administrative methods of governance in the branches of private law (and in labor law, in particular) prevailed. The formation and development of Soviet labor law in the 1918-1930s. fully reflects the logic of the impact of a totalitarian state on the branches of private law. The widely used system of repressive measures in the sphere of labor was provided not only by laws, but also by the adoption of numerous by-laws, which deformed the system of private law relations based on decentralization and freedom of choice by legal entities. Labor relations were used by the Soviet state as a means of political management of significant masses of the population. Along with the codification of labor legislation (the adoption of the RSFSR Labor Law Codes of 1918 and 1922), normative acts aimed at state monopolization of labor regulation were adopted. A significant number of by-laws, which actually had the highest legal force, often had a purely coercive nature and was used by management as a means of achieving political goals. There was a de facto substitution of the right to work with a labor obligation. In a totalitarian regime in 1918-1930. in fact, a labor obligation is being affirmed, and the relationship between the employee and the employer has ceased to be private in nature, being under the control of executive authorities. Conclusions. Totalitarian political regime seriously changed the essential characteristics of private law branches.


Author(s):  
Sarah A. Luse

In the mid-nineteenth century Virchow revolutionized pathology by introduction of the concept of “cellular pathology”. Today, a century later, this term has increasing significance in health and disease. We now are in the beginning of a new era in pathology, one which might well be termed “organelle pathology” or “subcellular pathology”. The impact of lysosomal diseases on clinical medicine exemplifies this role of pathology of organelles in elucidation of disease today.Another aspect of cell organelles of prime importance is their pathologic alteration by drugs, toxins, hormones and malnutrition. The sensitivity of cell organelles to minute alterations in their environment offers an accurate evaluation of the site of action of drugs in the study of both function and toxicity. Examples of mitochondrial lesions include the effect of DDD on the adrenal cortex, riboflavin deficiency on liver cells, elevated blood ammonia on the neuron and some 8-aminoquinolines on myocardium.


2020 ◽  
Vol 59 (04) ◽  
pp. 294-299 ◽  
Author(s):  
Lutz S. Freudenberg ◽  
Ulf Dittmer ◽  
Ken Herrmann

Abstract Introduction Preparations of health systems to accommodate large number of severely ill COVID-19 patients in March/April 2020 has a significant impact on nuclear medicine departments. Materials and Methods A web-based questionnaire was designed to differentiate the impact of the pandemic on inpatient and outpatient nuclear medicine operations and on public versus private health systems, respectively. Questions were addressing the following issues: impact on nuclear medicine diagnostics and therapy, use of recommendations, personal protective equipment, and organizational adaptations. The survey was available for 6 days and closed on April 20, 2020. Results 113 complete responses were recorded. Nearly all participants (97 %) report a decline of nuclear medicine diagnostic procedures. The mean reduction in the last three weeks for PET/CT, scintigraphies of bone, myocardium, lung thyroid, sentinel lymph-node are –14.4 %, –47.2 %, –47.5 %, –40.7 %, –58.4 %, and –25.2 % respectively. Furthermore, 76 % of the participants report a reduction in therapies especially for benign thyroid disease (-41.8 %) and radiosynoviorthesis (–53.8 %) while tumor therapies remained mainly stable. 48 % of the participants report a shortage of personal protective equipment. Conclusions Nuclear medicine services are notably reduced 3 weeks after the SARS-CoV-2 pandemic reached Germany, Austria and Switzerland on a large scale. We must be aware that the current crisis will also have a significant economic impact on the healthcare system. As the survey cannot adapt to daily dynamic changes in priorities, it serves as a first snapshot requiring follow-up studies and comparisons with other countries and regions.


1967 ◽  
Vol 06 (01) ◽  
pp. 8-14 ◽  
Author(s):  
M. F. Collen

The utilization of an automated multitest laboratory as a data acquisition center and of a computer for trie data processing and analysis permits large scale preventive medical research previously not feasible. Normal test values are easily generated for the particular population studied. Long-term epidemiological research on large numbers of persons becomes practical. It is our belief that the advent of automation and computers has introduced a new era of preventive medicine.


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