Search results for "Negative"

Different drinking motives, different adverse consequences? Evidence among adolescents from 10 European countries

2017

INTRODUCTION AND AIM: This study, which builds on previous research demonstrating that drinking motives are associated with adverse consequences, investigates the associations between drinking motives and non-alcohol-attributed adverse consequences and disentangles alcohol-related and direct effects. DESIGN AND METHOD: On the basis of a sample of 22 841 alcohol-using 13- to 16-year-olds (50.6% female) from Belgium, Denmark, Estonia, Finland, Ireland, Portugal, Scotland, Slovakia, Switzerland and Wales, structural equation models were used to estimate direct and indirect effects. Additionally, differences across countries were tested in a multigroup analysis. RESULTS: The indirect effect (vi…

Social comparison, coping and depression in people with spinal cord injury

2006

The present study among 70 people with spinal cord injury examined the prevalence and correlates of identification (seeing others as a potential future) and contrast (seeing others in competitive terms) in social comparison as related to coping and depression. The most prevalent social comparison strategy was downward contrast (a positive response to seeing others who were worse-off), followed by upward identification (a positive response to perceiving better-off others as a potential future), downward identification (a negative response to perceiving worse-off others as a potential future), and upward contrast (a negative response to seeing others who were better-off). Those with less seve…

Social antecedents of the role stress and career-enhancing strategies of newcomers to organizations: A longitudinal study

2003

Newcomers experience uncertainty and stress following entry into an organization. Two features of socialization are important for reducing their stress: socialization tactics and relations with superiors and co-workers. The present study tests a structural equation model, including, first, the effects over time of initial institutional socialization tactics and, second, the association between social relations at the workplace on newcomers’ role stress and career-enhancing strategies, two years later, among a large (N=661) international sample of job and organization stayers. Using LISREL 8.3 the results indicate a good fit between the model and data on several fit indices. Institutional so…

Evaluation of the psychometric properties of a modified Positive and Negative Affect Schedule including a direction scale (PANAS-D) among French athl…

2014

Abstract Objectives The goal of these studies was to provide validity and reliability evidence of a modified Positive and Negative Affect Schedule (PANAS) including a direction scale (PANAS-D). Study 1 tested the validity and reliability of the PANAS-D to measure both intensity and direction of affects. Study 2 examined the relationships between direction of affects and selected variables (i.e., coping, attainment of achievement goals and sport satisfaction) by controlling for intensity of affects. Method A total of 306 and 296 athletes (studies 1 and 2) completed the PANAS-D and other self-report questionnaires. Data were analysed with reliability, confirmatory factor analyses (study 1) an…

Depression bei Kindern und Jugendlichen: Prävalenz, Diagnostik, ätiologische Faktoren, Geschlechtsunterschiede, therapeutische Ansätze

2007

Die Prävalenzraten für die verschiednen Formen von Depression (depressiven Stimmungen, depressiven Syndromen und Major Depression) haben in den letzten Jahren zugenommen, die Geschlechtsunterschiede mit deutlich höheren Raten für Mädchen haben sich erhöht. Als ätiologische Faktoren für das Auftreten von Depression werden u. a. zunehmende Stressfaktoren, dysfunktionale Bewältigungsstile, ein negatives Körperkonzept und unsichere Bindungsmuster genannt. Unter den verschiedenen therapeutischen Ansätzen hat sich die psychoananlytische Behandlungsmethode als die umfassendste erwiesen. Schlüsselwörter Prävalenzraten - Komorbidität - Stress - Coping - Körperkonzept - Bindung Prevalence rates of th…

The Moderation Effects of Comparative Thinking Between Gratitude and Negative Affect During the COVID-19 Outbreak

2021

The aim of this research was to examine the moderation effects of comparative thinking (CT) across the relationship between gratitude and affect during the COVID-19 outbreak. To this purpose, multiple regression as well as moderation analyses were carried out. Age and sex were also addressed as variables of interest as described in previous literature. A sample of 306 north Americans was recruited by crowdsourcing platform ProA to obtain a representative sample based on age and gender. The participants filled in a questionnaire based on comparative thinking in relation to the emotional experience experienced before and during the COVID-19 outbreak, positive and negative affect schedule for …

Ray-Space-Based Multichannel Nonnegative Matrix Factorization for Audio Source Separation

2021

Nonnegative matrix factorization (NMF) has been traditionally considered a promising approach for audio source separation. While standard NMF is only suited for single-channel mixtures, extensions to consider multi-channel data have been also proposed. Among the most popular alternatives, multichannel NMF (MNMF) and further derivations based on constrained spatial covariance models have been successfully employed to separate multi-microphone convolutive mixtures. This letter proposes a MNMF extension by considering a mixture model with Ray-Space-transformed signals, where magnitude data successfully encodes source locations as frequency-independent linear patterns. We show that the MNMF alg…

2020

Background: Physical activity (PA) of higher intensity and longer duration mainly accumulates from older adults' out-of-home activities. Outdoor PA is influenced by environmental features; however, the day-to-day variability of PA and its associations with environmental features have not been widely studied. This study focused on the associations of environmental features with accelerometer-measured PA in older people on weekdays and weekend days. Methods: The study population comprised 167 community-dwelling older people aged 75-90 years. Accelerometers were worn on 7 consecutive days and a structured interview on physical functioning, health, and socioeconomic factors was administered. A …

Structure of the Cryptosporidium parvum microneme: a metabolically and osmotically labile apicomplexan organelle.

2003

From an EM study of thin sections, the rod-like microneme organelles within conventionally glutaraldehyde fixed Cryptosporidium parvum sporozoites have been shown to undergo a shape change to a more spherical structure when the sporozoites age in vitro for a period of approximately 12 to 24 h. This correlates with the shape change of intact sporozoites, from motile hence viable thin banana-shaped cells to swollen pear-shaped cells, shown by differential interference contrast light microscopy of unstained unfixed and glutaraldehyde-fixed samples, as well as by thin section EM of fixed sporozoites. From negatively stained EM specimens of unfixed and fixed sporozoites the cellular shape change…

Ultrastructure, fractionation and biochemical analysis of Cryptosporidium parvum sporozoites.

1999

Abstract Sporozoites of the apicomplexan parasite Cryptosporidium parvum were subjected to cell disruption and subcellular fractionation using a sucrose density step gradient. With this procedure, highly enriched preparations of the parasite membrane, the micronemes, dense granules and amylopectin granules were produced. No separate fraction containing rhoptries was obtained, however this organelle was found in defined fractions of the gradient, still associated with the apical tip of the sporozoites. Using negative staining, the internal structure of the micronemes was revealed by transmission electron microscopy. Micronemes and dense granules showed characteristic protein compositions by …