Les expression météorologiques. Une approche contrastive allemand / luxembourgeois / français

2021 ◽  
Vol 29 (1) ◽  
pp. 97-105
Author(s):  
Fernande Krier
Keyword(s):  
Scientific Study ◽  
Special Focus ◽  
Atmospheric Disturbances ◽  
Official Languages ◽  
Atmospheric Phenomena ◽  
Meteorological Phenomenon

Abstract Every day, we are confronted with meteorology, the scientific study of the atmospheric phenomena and their variations. The purpose of this article is to analyze the meteorological events in three languages, Luxemburgish and two other official languages of Luxembourg, French and German. First, we make a detailed inventory of verbs and verbal phrases which we found. Next, they are explained and commented; while there are seventeen items in French and German, there are eighteen in Luxem-burgish; so, the meteorological experiences are organized rather homogeneously. Then we deal with the lexicological specifications. In French, we discover the lightness of the meteorological phenomenon; it is followed by examples of atmospheric disturbances, which exist in German and Luxemburgish, too. A special focus of the article is put on the presentation of metaphorical expressions. Finally, we put the question if two meteorological events can appear at the same time.

scholarly journals Flight of a Guided Aerial Bomb Along a Vertical Plane in Turbulent Atmosphere

2019 ◽  
Vol 10 (3) ◽  
pp. 19-30
Author(s):  
Konrad STEFAŃSKI ◽  
Marta GRZYB
Keyword(s):  
Turbulent Atmosphere ◽  
Vertical Plane ◽  
Universal Method ◽  
Flight Trajectory ◽  
Proportional Navigation ◽  
The Earth ◽  
Power Spectral ◽  
Atmospheric Disturbances ◽  
Ground Target ◽  
Atmospheric Phenomena

The control of a homing flying object, which a guided aerial bomb (GAB) is, takes place in the earth’s atmosphere, which may feature various atmospheric phenomena that are disturbances to the GAB control. The atmospheric disturbances include air turbulences, wind pockets, and wind gusts. For the purpose of the research discussed in this paper, the atmospheric disturbances were qualified as a stochastic process of power spectral density according to the Dryden model. This paper presents a method of controlling a GAB in motion through a turbulent atmosphere of the earth. The GAB was homed to a moving ground target by the most universal method of proportional navigation. The research discussed in this paper included an analysis of the effect of atmospheric disturbances on the target striking accuracy of a GAB moving along a vertical plane, the GAB flight trajectory, the values of force inputs which controlled the GAB flight, the values of actual attack angles, the values of kinematic transverse overloads, and the control errors input to the guidance controller. The numerical simulations were completed during the research in Matlab/Simulink, and certain results thereof are represented in a graphical format.

scholarly journals Diagnostic Relations between Pressure and Entropy Perturbations for Acoustic and Entropy Modes

Atmosphere ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1164
Author(s):  
Sergey Leble ◽  
Ekaterina Smirnova
Keyword(s):  
Large Scale ◽  
Numerical Data ◽  
Equilibrium Temperature ◽  
Vertical Profiles ◽  
Vertical Coordinate ◽  
Atmospheric Disturbances ◽  
Individual Profiles ◽  
Atmospheric Phenomena ◽  
Analytical Expressions ◽  
Prospective Model

Diagnostics and decomposition of atmospheric disturbances in a planar flow are considered and applied to numerical modelling with the direct possibility to use in atmosphere monitoring especially in such strong events which follow magnetic storms and other large scale atmospheric phenomena. The study examines a situation in which the stationary equilibrium temperature of a gas may depend on a vertical coordinate, which essentially complicates the diagnostics. The relations connecting perturbations for acoustic and entropy (stationary) modes are analytically established and led to the solvable diagnostic equations. These equations specify acoustic and entropy modes in an arbitrary stratified gas under the condition of stability. The diagnostic relations are independent of time and specify the acoustic and the entropy modes. They provide the ability to decompose the total vector of perturbations into acoustic and non-acoustic (entropy) parts uniquely at any instant within the total accessible heights range. As a prospective model, we consider the diagnostics at the height interval 120–180 km, where the equilibrium temperature of a gas depends linearly on the vertical coordinate. For such a heights range it is possible to proceed with analytical expressions for pressure and entropy perturbations of gas variables. Individual profiles of acoustic and entropy parts for some data are illustrated by the plots for the pure numerical data against those obtained by the model. The total energy of a flow is determined for both approaches and its vertical profiles are compared.

Air blast recognition and location using regional seismographic networks

1987 ◽  
Vol 77 (4) ◽  
pp. 1446-1456
Author(s):  
Arch C. Johnston
Keyword(s):  
Speed Of Sound ◽  
Velocity Model ◽  
Atmospheric Temperature ◽  
Crustal Layer ◽  
Atmospheric Disturbances ◽  
Unconsolidated Material ◽  
Crustal Velocity Model ◽  
Seismic Networks ◽  
Atmospheric Phenomena ◽  
Time Of Origin

Abstract Regional seismic networks are occasionally useful for purposes other than earthquake studies. Three such applications which involve surface and atmospheric phenomena are described in this report: (1) the detection and location of a missile silo explosion in Arkansas; (2) analysis of an aircraft sonic boom; and (3) attempts to determine the time and location of ground impacts of aircraft and a meteorite. When the source of the disturbance is in the air, seismic instruments respond to the air-coupled surface waves generated in the wake of the atmospheric shock front advancing with the speed of sound in air. Thus, the disturbance's point and time of origin can be determined using a standard iterative hypocenter program with a “crustal” velocity model appropriate to the prevailing atmospheric temperature and pressure conditions. Simplified theory predicts that air-coupling is significant only when the speed of sound in air is close to the shear wave velocity of the surface crustal layer. This is normally the case only when unconsolidated material is present at the surface. The observations discussed here support this prediction: seismic network instruments sited on soft ground recorded signals from atmospheric disturbances much more clearly than did higher gain instruments on hard rock.

Current concepts of the interventional treatment of proximal supraaortic vessel stenosis

VASA ◽  
2012 ◽  
Vol 41 (5) ◽  
pp. 313-318 ◽  
Author(s):  
Ernemann ◽  
Bender ◽  
Melms ◽  
Brechtel ◽  
Kobba ◽  
...  
Keyword(s):  
Treatment Strategies ◽  
Carotid Bifurcation ◽  
Current Treatment ◽  
Long Term Results ◽  
Clinical Indication ◽  
Interventional Treatment ◽  
Special Focus ◽  
Brachiocephalic Artery ◽  
Treatment Concepts ◽  
Angioplasty And Stenting

Interventional therapies using angioplasty and stenting of symptomatic stenosis of the proximal supraaortic vessels have evolved as safe and effective treatment strategies. The aim of this paper is to summarize the current treatment concepts for stenosis in the subclavian and brachiocephalic artery with regard to clinical indication, interventional technique including selection of the appropriate vascular approach and type of stent, angiographic and clinical short-term and long-term results and follow-up. The role of hybrid interventions for tandem stenoses of the carotid bifurcation and brachiocephalic artery is analysed. A systematic review of data for angioplasty and stenting of symptomatic extracranial vertebral artery stenosis is discussed with a special focus on restenosis rate.

Social Psychology and Noninvasive Electrical Stimulation

2016 ◽  
Vol 21 (1) ◽  
pp. 30-40 ◽  
Author(s):  
Paulo S. Boggio ◽  
Gabriel G. Rêgo ◽  
Lucas M. Marques ◽  
Thiago L. Costa
Keyword(s):  
Social Psychology ◽  
Social Neuroscience ◽  
Special Focus ◽  
Social Pain ◽  
Substantial Evidence ◽  
Social Decision ◽  
Correlational Research ◽  
Neuroscience Research ◽  
Social Decision Making ◽  
Brain Behavior

Abstract. Social neuroscience and psychology have made substantial advances in the last few decades. Nonetheless, the field has relied mostly on behavioral, imaging, and other correlational research methods. Here we argue that transcranial direct current stimulation (tDCS) is an effective and relevant technique to be used in this field of research, allowing for the establishment of more causal brain-behavior relationships than can be achieved with most of the techniques used in this field. We review relevant brain stimulation-aided research in the fields of social pain, social interaction, prejudice, and social decision-making, with a special focus on tDCS. Despite the fact that the use of tDCS in Social Neuroscience and Psychology studies is still in its early days, results are promising. As better understanding of the processes behind social cognition becomes increasingly necessary due to political, clinical, and even philosophical demands, the fact that tDCS is arguably rare in Social Neuroscience research is very noteworthy. This review aims at inspiring researchers to employ tDCS in the investigation of issues within Social Neuroscience. We present substantial evidence that tDCS is indeed an appropriate tool for this purpose.

Review of Psychology: A scientific study of human behavior. 5th ed.

1979 ◽  
Vol 24 (11) ◽  
pp. 947-947
Author(s):  
RICHARD A. KASSCHAU
Keyword(s):  
Human Behavior ◽  
Scientific Study
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