Search results for "quantitative"
showing 10 items of 2409 documents
Changes in Family Income around the Time of Birth of Children in Germany between 1985 and 2004
2010
Während der Verlauf und die Ursachen des Geburtenverhaltens intensiv erforscht wurden, sind die finanziellen Folgen einer Geburt empirisch kaum beachtet worden. Daher werden hier kurzfristige Wohlstandsveränderungen von Familien (hinsichtlich verfügbarem Haushaltseinkommen und Äquivalenzeinkommen) rund um die Geburt eines Kindes in längsschnittlicher Perspektive analysiert und auf ihre Ursachen untersucht. Zu diesem Zweck wurden die Daten des Sozio-oekonomischen Panels (1984-2005) mittels Fixed-Effekt-Panelregressionsmodellen analysiert. Als Ergebnis kann festgehalten werden, dass die finanziellen Folgen einer Geburt in den letzten Jahren deutlich gewachsen sind und vor allem das erste Kind…
Chronic neural probe for simultaneous recording of single-unit, multi-unit, and local field potential activity from multiple brain sites
2017
Drug resistant focal epilepsy can be treated by resecting the epileptic focus requiring a precise focus localisation using stereoelectroencephalography (SEEG) probes. As commercial SEEG probes offer only a limited spatial resolution, probes of higher channel count and design freedom enabling the incorporation of macro and microelectrodes would help increasing spatial resolution and thus open new perspectives for investigating mechanisms underlying focal epilepsy and its treatment. This work describes a new fabrication process for SEEG probes with materials and dimensions similar to clinical probes enabling recording single neuron activity at high spatial resolution.Polyimide is used as a bi…
Triggering a transient organo-gelation system in a chemically active solvent
2021
A transient organo-gelation system with spatiotemporal dynamic properties is described. Here, the solvent actively controls a complex set of equilibria that underpin the dynamic assembly event. The observed metastability is due to the in situ formation of a secondary solvent, acting as an antagonist against the primary solvent of the organogel. peerReviewed
The adsorption of water vapor on super absorbent product at low temperatures and low mass.
2006
The adsorption isotherms of water vapor on super absorbent product have the same form of type III isotherm at ambient temperature with the hysteresis phenomena. For temperatures lower than ambient, the isotherms become deformed because of the chains effect. The polymer is characterized by a multilayer adsorption, which occurs before a full-course is complete. During adsorption reactions, the polymer undergoes rearrangement polymeric network, which results from a cooperative diffusion of the water molecules and from a chain spacing followed by an expansion of the polymeric network. Three types of water molecules adsorbed on polymer were identified: strongly dependent water, adsorbed water, a…
Rare variant analyses across multiethnic cohorts identify novel genes for refractive error
2023
Refractive error, measured here as mean spherical equivalent (SER), is a complex eye condition caused by both genetic and environmental factors. Individuals with strong positive or negative values of SER require spectacles or other approaches for vision correction. Common genetic risk factors have been identified by genome-wide association studies (GWAS), but a great part of the refractive error heritability is still missing. Some of this heritability may be explained by rare variants (minor allele frequency [MAF] ≤ 0.01.). We performed multiple gene-based association tests of mean Spherical Equivalent with rare variants in exome array data from the Consortium for Refractive Error and Myopi…
Effect of fixation target on the contrast sensitivity in the foveal and parafoveal area
2017
Purpose To determine the influence on the contrast sensitivity when the stimulus contains a fixation target in two retinal locations, foveal and parafoveal. Methods Four young adults with 0.0 logMar acuity participated in this study. The stimulus was based on vertical sinusoidal gratings masked by a circular (for foveal area) or a ring (for parafoveal area). To increase the luminance resolution of the display a bit-stealing technique was used. Four different sets of stimuli were generated, two for exploring the foveal sensitivity and two for the parafoveal area. The difference between the sets designed for the same area was the presence, or absence, of a fixation target (a white cross) in t…
Modālo darbības vārdu un tiem pielīdzināmo vārdu un frāžu lietojums laikrakstā „The Guardian”
2016
Modālo darbības vārdu un tiem pielīdzināmo vārdu un frāžū lietojums laikrasta rakstos var atklāt rakstnieka attieksmi un viedokli pret paziņotiem faktiem. Šī bakalaura darba mērķis ir analizēt modālo darbības vārduun tiem pielīdzināmo vārdu un frāžū lietojumu laikrakstā „The Guardian”. Metode, kas tika izmantota darbā ir kvantitatīvā un kvalitatīvā analīze. Praktiskā daļa ir balstīta uz 15 rakstu analīzi, kas bija ņemti no laikraksta “The Guardian”. Rezultāti parādīja, ka modālie darbības vārdi, kā arī citi pielīdznināmie vārdi, tiek bieži izmantoti, un tiem irdažādas nozīmes tekstā. Tika konstatēts, ka visbiežāk izmantotie modālie darbības vārdi ir will, would and could. Modālie darbības v…
Vitesse, accessibilité et étalement urbain ; analyse et application à l'aire urbaine dijonnaise
2003
The set of themes of the city is approached primarily by the means of the residential density. This concept is analyzed from a purely conceptual point of view, then more theoretical (thus making use of rather traditional econometric models: Clark, Newling) for finally being applied to the agglomeration dijonnaise like with its urban surface. One releases the great urban structures thus revealing an intermediate city between the model monocentric and polycentric. The two components are analyzed successively starting from the concept of residential density. Taking as assumption that the cities are dynamic, the second stage is that of urban sprawl out. A first introductory approach attempts to…
Sociolinguistic Resilience Among Young Academics. A Quantitative Analysis in Germany and France
2021
International audience; Already Friedrich Schiller was convinced that language mirrors a nation. If this is the case, then the often deplored ‘brutalization of language’, which has almost become a buzzword in the wake of the refugee crisis in Germany that started in 2015, points to a serious social crisis by raising questions of (national) identity and self-understanding. Based on newly introduced sociolinguistic resilience concept in line with the concept of group focus enmity (GFE) combining the dimensions of co-adaptation and co-evolution of linguistic signs, this article presents preliminary empirical evidence of a ‘classroom’ survey conducted among students in four university towns in …