Search results for "SAMPLE"

The overstated generational gap in online news use? A consolidated infrastructural perspective

2021

Recent research by Taneja et al. suggested that digital infrastructures diminish the generational gap in news use by counteracting preference structures. We expand on this seminal work by arguing that an infrastructural perspective requires overcoming limitations of highly aggregated web tracking data used in prior research. We analyze the individual browsing histories of two representative samples of German Internet users collected in 2012 ( N = 2970) and 2018 ( N = 2045) and find robust evidence for a smaller generational gap in online news use than commonly assumed. While short news website visits mostly demonstrated infrastructural factors, longer news use episodes were shaped more by …

The Posttraumatic Stress Disorder Factorial Structure: Findings from a Multicultural Sample

2020

Although several studies exploring Posttraumatic Stress Disorder (PTSD) factorial structure have been conducted, few of them have tested the ICD-11 and the DSM-5-based models in samples from low-in...

Factor structure and stability of a quality questionnaire within a postgraduate program

2017

En este trabajo se describe un instrumento basado en el uso de una técnica de análisis factorial con el fin de medir la calidad de la educación a través de una muestra de estudiantes de postgrado de una universidad pública española. El instrumento tiene unas aceptables propiedades psicométricas (fiabilidad y validez). En cuanto a la solución factorial, tres dimensiones principales se han determinado: la importancia dada a la materia; recursos educativos y conocimiento de la materia (anterior y posterior). Es importante destacar que estas tres dimensiones se han detectado consistentemente en todo el análisis factorial: muestra total y cursos separados. Estas tres dimensiones deben ser consid…

Los emprendedores surgidos de las empresas multinacionales de inversión extranjera directa: un estudio exploratorio en Costa Rica

2014

ResumenEl presente trabajo busca evaluar la creación de empresas por parte de exempleados de empresas multinacionales de inversión extranjera directa. En concreto, se busca dimensionar el fenómeno, caracterizarlo, así como valorar el desempeño de las empresas creadas. El estudio se hizo mediante un muestreo aleatorio simple con margen de error del 7% y nivel de confianza del 95%, sobre una base de datos de 11.120 exempleados de empresas multinacionales en Costa Rica (n=175). Además se utilizó un grupo control ad hoc. Los resultados muestran cómo son estos emprendedores, el proceso creador experimentado, las características y el desempeño de las nuevas empresas.AbstractThe aim of this invest…

Convergence analysis for hierarchical longitudinal data

2018

Abstract Convergence analysis is typically envisaged either from a macro or a micro perspective. However, empirical tests tend to ignore that the two levels are often “nested” in a hierarchy. Building on hierarchical growth curve modelling, we propose an approach to convergence analysis that allows contemporaneous inference on macro and micro-convergence. Compared to the classic linear convergence analysis, the suggested methodology provides a more flexible alternative to model heterogeneity and validate the results for possible Galton's fallacy. We illustrate the approach in two empirical examples, one considering convergence across European regions and countries and the other across Itali…

Transgenerational innovation capability in family firms

2020

PurposeBased on the theory of dynamic capabilities, the purpose of this study is to examine how generation influences the effect of innovation capability on family business performance. To achieve this purpose, a moderation model is tested using the generational level as the moderating variable.Design/methodology/approachThis study used a sample of 106 family businesses CEOs who were surveyed by mail using the Limesurvey 2.5 platform. The results obtained were analyzed using the second-generation partial least squares (PLS) structural equation model. The MICOM (Measurement Invariance of Composite Models) approach was used to analyze the moderating effect.FindingsThis research sheds lights o…

Divorce and Gendered Family (Re)Configurations in a Sample of Employed and Higher Educated Mothers and Fathers

2020

Altres ajuts: CSO2016-78715-R From 26 semi-structured interviews conducted in Spain we examine how motherhood and fatherhood is redefined and how family configurations are reshaped after a divorce or separation. The existence of common children in our sample meant that their original nuclear family never completely dissolved as the meaning of families became broader and more complex. Family was not restricted to a specific home, those who shared a home weren't necessarily united by family ties, nor did living alone necessarily mean a lack of family, stable relationships, or strong emotional ties. Gender transcended all divorce-related issues although for all respondents post-divorce motheri…

Calibrated international standards including ATHO-G, T1-G, and VG-568 (USNM 72854)

2021

Optical sectioning microscopy through single-shot Lightfield protocol

2020

Optical sectioning microscopy is usually performed by means of a scanning, multi-shot procedure in combination with non-uniform illumination. In this paper, we change the paradigm and report a method that is based in the light field concept, and that provides optical sectioning for 3D microscopy images after a single-shot capture. To do this we fi rst capture multiple orthographic perspectives of the sample by means of Fourier-domain integral microscopy (FiMic). The second stage of our protocol is the application of a novel refocusing algorithm that is able to produce optical sectioning in real time, and with no resolution worsening, in the case of sparse f luorescent samples.We provide the…

The Lightfield Microscope Eyepiece

2021

Lightfield microscopy has raised growing interest in the last few years. Its ability to get three-dimensional information about the sample in a single shot makes it suitable for many applications in which time resolution is fundamental. In this paper we present a novel device, which is capable of converting any conventional microscope into a lightfield microscope. Based on the Fourier integral microscope concept, we designed the lightfield microscope eyepiece. This is coupled to the eyepiece port, to let the user exploit all the host microscope’s components (objective turret, illumination systems, translation stage, etc.) and get a 3D reconstruction of the sample. After the optical design, …