Search results for "Pre and post"
showing 10 items of 13 documents
Inflexible versus flexible: the influence of temperature and photoperiod on pre- and post-eyespot development time in Libellulidae (Odonata)
2016
Temperature and photoperiod are important environmental parameters for organisms. The present study tests the hypothesis that, during embryogenesis, temperature and photoperiod influence pre- and post-eyespot development time in dragonflies of the family Libellulidae differently. Eggs are used from eight species (five different genera, from Africa/Europe, and lentic/lotic habitat preferences). The eggs are reared under different constant or fluctuating temperature and light conditions. There are no general species-specific degree-days for pre- or the post-eyespot development in these species. In all study species, the variance within and between the treatments of the duration in days and th…
Changes in strength and power performance and serum hormone concentrations during 12 weeks of task-specific or strength training in conscripts.
2020
Abstract The purpose of this study was to investigate the effects of two different training programs on strength and power performance and serum hormone concentrations. A total of 104 male soldiers volunteered and took part in the 12‐week training period with baseline, mid‐, and post‐measurements of body composition, muscle strength, lower and upper body power, and blood samples to determine serum hormone concentrations. The mean (±SD) age of subjects was 20 ± 1 years, height 180 ± 6 cm and body mass 72.4 ± 8.8 kg. The subjects were divided into three different training groups: soldier task‐specific training (TS), strength training (ST), and control (CON). Each group had a total of 18 train…
State-of-the-art imaging in palaeopathology: the value of multislice computed tomography in visualizing doubtful cranial lesions
2002
Non-invasive imaging techniques are of great value in palaeopathology. Computed tomography (CT) is widely established to visualize changes in human remains that occurred both pre and post mortem. Since 1999 an advanced form of helical CT—so called Multislice-CT (MSCT)—has become available for clinical purposes. We now present for the first time three historic cranial lesions of doubtful aetiology visualized by MSCT. Both original images and virtual reconstructions of the specimens are of high quality. In combination with peri-lesional bone density measurements these images allow an improved assessment of aetiology. The cases presented are diagnosed by MSCT as being of intra vitam nature in …
Effect of Choice Feeding in the Pre-weaning Period on the Growth Performance of Calves during the Pre- and Post-weaning Periods
2017
The aim of this study was to investigate the effects of choice feeding in the pre-weaning period on the growth performance of calves during the pre- and post-weaning period. It is possible that high Crude protein (CP) intake during the pre-weaning period may improve post-weaning performance of calves. Currently, there is insufficient data available on the effect of pre-weaning feeding method on post-weaning performance of calves; therefore the aim of this study was to examine the effect of choice feeding on growth performance of calves during the pre and post-weaning period. Results: Twenty eight male and 28 female Holstein calves were assigned to two different feeding systems. After weanin…
The influence of the physical education teacher on intrinsic motivation, self-confidence, anxiety, and pre-and post-competition mood states
2001
One of the fundamental problems facing teachers of physical education (PE) is how to increase pupils' motivation. From the point of view of goal achievement, guidelines need to be established so that information may be used to greater effect in classes. This study examined the relationship between the motivational climate created by the PE teacher and the intrinsic motivation of the preparatory sessions together with self-confidence and anxiety prior to competition and pre- and post-competition mood states. The sample was made up of school children (M age = 11.7) from a state school (N = 115), who, after an introduction to an athletics course of 12 sessions, took part in a sports competitio…
Cambios psicosociales en un programa de intervención con hombres penados por violencia contra la mujer
2012
En este trabajo se presentan los resultados obtenidos en relación a la evaluación de la eficacia de un programa de intervención para hombres condenados por violencia contra la mujer, desarrollado en medio abierto en la provincia de Valencia (Programa Contexto). La muestra está compuesta por 109 hombres. Se utilizó un diseño preexperimental con medición pre y post tratamiento. Según los resultados obtenidos, se producen cambios significativos a nivel actitudinal, reduciéndose las actitudes de culpabilización de la víctima. Por otra parte, se producen cambios relativos a variables psicológicas, experimentando los participantes una reducción de la sintomatología depresiva y, por último, a nive…
How pre- and post-recruitment factors shape role perceptions of European Commission officials
2017
Individuals' role perceptions are central guides to their behavior and choices as members of an organization. Understanding organizational dynamics thus requires knowledge about the determinants of such role perceptions, as well as whether—and when—organizations can influence them. This article brings forward a theoretical framework allowing for both prerecruitment (extraorganizational) and post-recruitment (intraorganizational) determinants of individuals' role perceptions, and examines its empirical implications using a large-N data set of temporary officials in the European Commission. We find that intergovernmental and epistemic role perceptions are strongly linked to pre-recruitment fa…
Pre- and post-ictal brain activity characterization using combined source decomposition and connectivity estimation in epileptic children
2019
In this research, the study of functional connectivity between sources of electroencephalogram (EEG) activity assessed for different classes (well before seizure, preictal and post-ictal) was performed. EEG recordings were acquired from 12 subjects with focal epilepsy. Then, ten common spatial patterns (CSP) were obtained for EEG segments describing 95% of Riemannian distance between pairs of classes, followed by estimation of multivariate autoregressive (MVAR) models’ coefficients. The MVAR models were further used to extract coherence as a functional connectivity measures. Our results show that the coherence between CSP sources differs between baseline and pre-ictal segments: it has the l…
Analysis of the Pre and Post-COVID-19 Lockdown Use of Smartphone Apps in Spain
2021
The global pandemic of COVID-19 has changed our daily habits and has undoubtedly affected our smartphone usage time. This paper attempts to characterize the changes in the time of use of smartphones and their applications between the pre-lockdown and post-lockdown periods in Spain, during the first COVID-19 confinement in 2020. This study analyzes data from 1940 participants, which was obtained both from a survey and from a tracking application installed on their smartphones. We propose manifold learning techniques such as clustering, to assess, both in a quantitative and in a qualitative way, the behavioral and social effects and implications of confinement in the Spanish population. We al…
Characterization of the seismic dynamical state through joint analysis of earthquakes and seismic noise: the example of Ischia Volcanic Island (Italy)
2020
This work is devoted to the study of both earthquakes and background seismic noise at Ischia Island (Italy) recorded pre and post the Md 4.0 earthquake occurred on 21 August 2017 (18:57 UTC). We compare and characterize noise and earthquakes in terms of Independent Component Analysis, energy and polarization properties. The earthquakes' waveforms and the background noise are decomposed into a few independent components with two main common signals peaked around 1–2 and 3–4 Hz, respectively. A slight increase of the energy of the background seismic noise is observed comparing samples recorded in 2016 and 2017, whereas no variations are detected in 2017 pre and post the main ear…