Search results for "GRAVITY"
showing 10 items of 537 documents
Estimer des flux de navetteurs avec un modèle gravitaire
2019
Dans ce poster, nous présentons le modèle gravitaire sous différents modèles en mettant en évidence les effets de distance et les occasions interposées. Le modèle généralisé de Newton est utilisé et donne des estimations relativement correctes des flux intercommunaux en région PACA.
El cine de ciencia ficción en las clases de ciencias de enseñanza secundaria (I). Propuesta didáctica
2015
Este trabajo presenta un ejemplo de actividades para poder trabajar en el aula con cine de ciencia ficción y documentales de divulgación científica. Estas actividades están dirigidas a la adquisición y/o mejora de los conceptos de luz y sonido, gravedad, y a la mejora de la imagen que los alumnos puedan tener de la ciencia, los científicos y la influencia de la ciencia en el futuro. Por otro lado, se presentan los resultados de valoración que, de estas actividades y su realización en el aula han hecho los alumnos con los que se han trabajado y profesores a las que se les han presentado.
''Dual'' gravity: Using spatial econometrics to control for multilateral resistance.
2007
We propose a quantity-based `dual' version of the gravity equation that yields an estimating equation with both cross-sectional interdependence and spatially lagged error terms. Such an equation can be concisely estimated using spatial econometric techniques. We illustrate this methodology by applying it to the Canada-U.S. data set used previously, among others, by Anderson and van Wincoop (2003) and Feenstra (2002, 2004). Our key result is to show that controlling directly for spatial interdependence across trade flows, as suggested by theory, significantly reduces border effects because it captures `multilateral resistance'. Using a spatial autoregressive moving average specification, we …
Are Energy Market Integrations a Green Light for FDI?
2015
This paper studies the effect of energy market integration (EMI) on foreign direct investment (FDI). EMIs diminish energy uncertainty and price volatility in the host country and affect FDI through two channels: first, by harmonizing energy prices and, second, by reducing price dispersion. FDI may, as a result, increase both within and outside the EMI area, through energy stability mechanisms and price mechanisms, respectively. An empirical application on a global dataset including bilateral FDI data, during 2003-2012, using the gravity equation, shows that the integration of Portugal and Spain's electricity market in 2007 increased the amount of FDI's participants. Additionally, a positive…
“Waiting for the Bass to Drop”: Correlations Between Intense Emotional Experiences and Production Techniques in Build-up and Drop Sections of Electro…
2014
This study investigates the correlations between theories of intense emotional experiences and production techniques used in the electronic dance music (EDM) sections “build-up” and “drop”, which are designed to build tension and create a heightened emotional intensity among clubbers. This is done by descriptive and interpretive music analysis, where spectrograms and a schematic model visually represent the dominant production techniques. Through a theoretical framework consisting of musical expectancy and gravity, the analysis suggests that i) extensive use of uplifters, ii) the “drum roll effect”, iii) large frequency changes, iv) removal and reintroduction of bass and bass drum and v) a …
A kulturális gravitáció modelljének bemutatása : Az irodalomtörténet újraértelmezése a kulturális mozgások figyelembevételével a vajdasági magyar iro…
2016
Egy olyan kulturális modell a tanulmány tárgya, amely az úgynevezett határon túli magyar irodalmak kulturális helyzetét leíró eddigi gondolatrendszerekkel ellentétben nem a közve- títői szerepre és a kölcsönös függésre helyezi a hangsúlyt, hanem épp az önálló működés feltételeit taglalja. A kulturális gravitáció nem titkoltan a természettudományok felől érke- zik a kultúratudomány területére. Jelen szöveg a vajdasági magyar irodalom kulturális kapcsolatainak újraértelmezésére koncentrál, s arra keresi a választ, hogy abban az össze- tett kapcsolatrendszerben, amelyben helyet foglal, milyen feltételekkel tudja megőrizni kulturális önállóságát. A kulturális gravitáció modelljének értelmezését…
Motor planning of vertical arm movements in healthy older adults: does effort optimization persist with aging?
2019
AbstractSeveral sensorimotor modifications are known to occur with aging, possibly leading to adverse outcomes such as falls. Recently, some of those modifications have been proposed to emerge from motor planning deteriorations. Motor planning of vertical movements is thought to engage an internal model of gravity to anticipate its mechanical effects on the body-limbs and thus to genuinely produce movements that minimize muscle effort. This is supported, amongst other results, by direction-dependent kinematics where relative durations to peak accelerations and peak velocity are shorter for upward than for downward movements. The present study compares motor planning of fast and slow vertica…
Alternative methods of mechanical Cardiopulmonary Resuscitation
2000
Due to the relative ineffectiveness of standard resuscitation techniques, alternative methods have been explored for many years. The aim of new methods is to improve haemodynamics and increase survival rates. In spite of some encouraging haemodynamic results, all but one study failed to show an increase in long-term survival rates with an alternative method in a convincingly large group of patients (hospital discharge without neurological damage, and 1-year survival). In this study active compression-decompression resuscitation (ACD-CPR) increased long-term survival compared to standard-CPR. The results from certain individual studies, which showed a significant increase in short-term survi…
Stress and recovery assessment during simulated microgravity: Effects of exercise during a long-term head down tilt bed rest in women.
2009
International audience; The aim of this study was to determine the effects of a 60-day head-down tilt long-term bed rest (HDT) on stress and recovery in sixteen healthy female volunteers. Participants were randomly assigned to either an exercise group (Exe) that followed a training program combining resistive and aerobic exercises, or to a no-exercise control group (Ctl). Psychological states were assessed using the Rest-Q, a validated questionnaire based on stress-recovery responses. A longitudinal analysis revealed significant changes in the general and specific-stress scales for all participants throughout the experiment with a critical stage from supine to standing posture leading to a …
Immediate Effects of Anodal Transcranial Direct Current Stimulation on Postural Stability Using Computerized Dynamic Posturography in People With Chr…
2020
Postural stability is commonly decreased in individuals with chronic post-stroke hemiparesis due to multisystemic deficits. Transcranial direct current stimulation (tDCS) is a non-invasive method to modulate cortical excitability, inducing neuroplastic changes to the targeted cortical areas and has been suggested to potentially improve motor functions in individuals with neurological impairments. The purpose of this double-blinded, sham-controlled study was to examine the acute effects of anodal tDCS over the lesioned motor cortex leg area with concurrent limits of stability training on postural control in individuals with chronic post-stroke hemiparesis. Ten individuals with chronic post-s…