Search results for "Speed"

Szybkie życie, szybkie jedzenie i czy warto (trzeba) pędzić? Refleksje

2019

Potential Growth and Business Cycle in the Spanish Economy: Implications for Fiscal Policy

2007

An accurately estimation of the cyclical position of an economy is a necessary condition for the success of fiscal stabilisation policies. In this paper we show that the estimation of the output gap by means of decomposing a production function produces similar results to univariate and multivariate methods, increasing their robustness and allowing us to conclude that most of the information on the economic cycle is included in the cyclical component of the unemployment rate. The results also indicate that there is reduced uncertainty about the periods when the Spanish economy has clearly been in a deep recession or in a sharp expansion. These periods have been limited and of relatively sho…

Mortality associations with DNA methylation-based biological aging and physical functioning measures across a 20-year follow-up period

2023

Background Measures of biological aging range from DNA methylation (DNAm)-based estimates to measures of physical abilities. The purpose of this study was to compare DNAm- and physical functioning-based measures of biological aging in predicting mortality. Methods We studied 63- to 76-year-old women (N = 395) from the Finnish Twin Study on Aging (FITSA). Participants’ biological age (epigenetic clocks DNAm GrimAge and DunedinPACE) was estimated using blood DNAm data. Tests of physical functioning conducted under standardized laboratory conditions included the Timed Up and Go (TUG) test and 10-m walk test. Mortality hazard ratios (HRs) were calculated per every one standard deviation (SD) in…

Wake and Turbulence Analysis for Wind Turbine Layouts in an Island

2018

There is a big wind energy potential in supplying the power in an island and most of the islands are off-grid. Due to the limited area in island(s), there is need to find appropriate layout / location for wind turbines suited to the local wind conditions. In this paper, we have considered the wind resources data of an island in Trøndelag region of the Northern Norway, situated on the coastal line. The wind resources data of this island have been analysed for wake losses and turbulence on wind turbines for determining appropriate locations of wind turbines in this island. These analyses are very important for understanding the fatigue and mechanical stress on the wind turbines. In this work,…

Thermodynamic correction of particle concentrations measured by underwing probes on fast-flying aircraft

2016

Particle concentration measurements with underwing probes on aircraft are impacted by air compression upstream of the instrument body as a function of flight velocity. In particular, for fast-flying aircraft the necessity arises to account for compression of the air sample volume. Hence, a correction procedure is needed to invert measured particle number concentrations to ambient conditions that is commonly applicable to different instruments to gain comparable results. In the compression region where the detection of particles occurs (i.e. under factual measurement conditions), pressure and temperature of the air sample are increased compared to ambient (undisturbed) conditions in certain …

L'implantation des gares TGV en France: tensions interscalaires, jeux d'acteurs et recompositions spatiales

2010

L’extension du réseau de lignes à grande vitesse renouvelle le problème du positionnement des gares, notamment en France qui privilégie une logique d’efficacité fondée sur des dessertes rapides et cadencées entre grandes métropoles au détriment des espaces intermédiaires. Cette option se traduit par deux types de localisation : gare principale centrale pour les plus grandes villes et gare périphérique pour les villes petites et moyennes. Ces choix d’implantation résultent de processus interactifs qui concernent tous les niveaux de l’organisation spatiale. Ainsi, si on examine les processus de décision ayant conduit à l’implantation des gares TGV en France, ces choix et les stratégies de val…

Motor imagery in unipolar major depression

2014

International audience; Background: Motor imagery is a potential tool to investigate action representation, as it can provide insights into the processes of action planning and preparation. Recent studies suggest that depressed patients present specific impairment in mental rotation. The present study was designed to investigate the influence of unipolar depression on motor imagery ability. Methods: Fourteen right-handed patients meeting DSM-IV criteria for unipolar depression were compared to 14 matched healthy controls. Imagery ability was accessed by the timing correspondence between executed and imagined movements during a pointing task, involving strong spatiotemporal constraints (spee…

Data from: Characterization of recruitment through tandem running in an Indian queenless ant Diacamma indicum

2017

Tandem running is a primitive recruitment method employed by many ant genera. This study characterizes this behaviour during the recruitment of colony mates to a new nest in an Indian ant Diacamma indicum. Tandem leaders who have knowledge of the new nest lead a single follower at a time, to the destination by maintaining physical contact. In order to characterize tandem running, we captured and analysed 621 invitations, 217 paths and 226 termination events. Remarkably, not a single colony member was lost. While invitations were stereotypic in behaviour, termination was not. Analysis of speed revealed that the average transport speed was 4.2 cm s−1. Coupled adult-brood transport was slower …

2019

Ankle plantar flexor muscles are active in the stance phase of walking to propel the body forward. Increasing walking speed requires increased plantar flexor excitation, frequently assessed using surface electromyography (EMG). Despite its popularity, validity of surface EMG applied on shank muscles is mostly unclear. Thus, we examined the agreement between surface and intramuscular EMG at a range of walking speeds. Ten participants walked overground at slow, preferred, fast, and maximum walking speeds (1.01 ± 0.13, 1.43 ± 0.19, 1.84 ± 0.23, and 2.20 ± 0.38 m s-1, respectively) while surface and fine-wire EMG activities of flexor hallucis longus (FHL), soleus (SOL), medial gastrocnemius (MG…

Association Between Gait Speed With Mortality, Cardiovascular Disease and Cancer:A Systematic Review and Meta-analysis of Prospective Cohort Studies

2018

Objectives: Slow gait speed may be associated with premature mortality, cardiovascular disease (CVD), and cancer, although a comprehensive meta-analysis is lacking. In this systematic review and meta-analysis, we explored potential associations between gait speed and mortality, incident CVD, and cancer. Design: A systematic search in major databases was undertaken from inception until March 15, 2018 for prospective cohort studies reporting data on gait speed and mortality, incident CVD, and cancer. Setting and Participants: All available. Measures: The adjusted hazard ratios (HRs) and 95% confidence intervals (CIs), based on the model with the maximum number of covariates for each study bet…