scholarly journals Unequal expectations? Testing decisional mechanisms for secondary effects of social origin

2021 ◽  
pp. 102688
Author(s):  
Manuel T. Valdés
Keyword(s):  
Secondary Effects ◽  
Social Origin

scholarly journals Bildungsungleichheit und Grundschulempfehlung beim Übergang auf das Gymnasium: Eine Dekomposition primärer und sekundärer Herkunftseffekte / Educational Inequality and Teacher Recommendations at the Transition to Upper Secondary School: A Decomposition of Primary and Secondary Effects of Social Origin

2010 ◽  
Vol 39 (3) ◽  
Author(s):  
Martin Neugebauer
Keyword(s):  
Secondary School ◽  
Educational Inequality ◽  
Upper Secondary School ◽  
Secondary Effects ◽  
Social Origin ◽  
Upper Secondary ◽  
Primary And Secondary Effects ◽  
Teacher Recommendations ◽  
Primäre Und Sekundäre Effekte

ZusammenfassungIn Anlehnung an die klassische Arbeit von Boudon (1974) gibt es zwei Ursachenkomplexe für soziale Bildungsungleichheit: primäre Effekte, die sich im Zusammenhang von sozialer Herkunft und Schulleistungen ausdrücken, und sekundäre Effekte, die schichtspezifische Übergangsneigungen widerspiegeln, selbst bei gleichen schulischen Leistungen. Die Abschätzung der relativen Bedeutung von primären und sekundären Effekten ist das Ziel einer wachsenden Anzahl internationaler Beiträge. Die vorliegende Untersuchung möchte hierzu einen Beitrag leisten, indem sie erstens die relative Bedeutung der Effekte am Übergang auf das Gymnasium in Deutschland abschätzt und zweitens untersucht, inwieweit die bundeslandspezifische Ausgestaltung der Grundschulempfehlung die relative Bedeutung von primären zu sekundären Effekten beeinflusst. Mit bundesweiten Längsschnittdaten des DJI Kinderpanels der Jahre 2002 bis 2005 lassen sich primäre und sekundäre Effekte durch eine neue kontrafaktische Dekompositionsanalyse zerlegen. Es wird gezeigt, dass sekundäre Effekte 59 Prozent der Bildungsungleichheit am Übergang auf das Gymnasium ausmachen. Besonders bedeutsam sind sie bei Kindern im mittleren Notenbereich. Weiterhin finden sich Hinweise, dass der relative Erklärungsbeitrag von sekundären Effekten größer ist, wenn Eltern frei entscheiden können und geringer, wenn die elterliche Wahlfreiheit durch eine verbindliche Grundschulempfehlung eingeschränkt wird. Theoretische und bildungspolitische Konsequenzen werden diskutiert.

Variations in Surface Textures of Quartz Sand using Electron Microscopy

1970 ◽  
Vol 28 ◽  
pp. 494-495
Author(s):  
Eugene J. Amaral
Keyword(s):  
Electron Microscopy ◽  
Glass Industry ◽  
Glass Slide ◽  
Distilled Water ◽  
Early Paleozoic ◽  
Secondary Effects ◽  
Surface Textures ◽  
High Silica ◽  
Sand Deposit ◽  
The U.S

Examination of sand grain surfaces from early Paleozoic sandstones by electron microscopy reveals a variety of secondary effects caused by rock-forming processes after final deposition of the sand. Detailed studies were conducted on both coarse (≥0.71mm) and fine (=0.25mm) fractions of St. Peter Sandstone, a widespread sand deposit underlying much of the U.S. Central Interior and used in the glass industry because of its remarkably high silica purity.The very friable sandstone was disaggregated and sieved to obtain the two size fractions, and then cleaned by boiling in HCl to remove any iron impurities and rinsed in distilled water. The sand grains were then partially embedded by sprinkling them onto a glass slide coated with a thin tacky layer of latex. Direct platinum shadowed carbon replicas were made of the exposed sand grain surfaces, and were separated by dissolution of the silica in HF acid.

Aposematism

2018 ◽  
Author(s):  
Graeme D. Ruxton ◽  
William L. Allen ◽  
Thomas N. Sherratt ◽  
Michael P. Speed
Keyword(s):  
Secondary Effects ◽  
Warning Coloration ◽  
Common Features ◽  
Initial Evolution ◽  
The Common ◽  
Aposematic Signals

Aposematism is the pairing of two kinds of defensive phenotype: an often repellent secondary defence that typically renders prey unprofitable to predators if they attack them and some evolved signal that indicates the presence of that defence. Aposematic signals often work to modify the behaviours of predators both before and during attacks. Warning coloration, for example, may increase wariness and hence improve the chances that a chemically defended prey is released unharmed after an attack. An aposematic signal may therefore first tend to reduce the probability that a predator commences attack (a primary defence) and then (as a component of secondary defence) reduce the probability that the prey is injured or killed during any subsequent attack. In this chapter we will consider both the primary and the secondary effects of aposematic signals on prey protection. We begin first by describing the common features of aposematic signals and attempting to show the wide use to which aposematic signalling is deployed across animals (and perhaps plants too). We then review the interesting evolutionary issues aposematic signals raise, including their initial evolution and their integration with sexual and other signals. We also discuss important ecological, co-evolutionary, and macroevolutionary consequences of aposematism.

scholarly journals Joint Family and Work Trajectories and Multidimensional Wellbeing

2021 ◽  
Author(s):  
C. L. Comolli ◽  
L. Bernardi ◽  
M. Voorpostel
Keyword(s):  
Life Course ◽  
Subjective Wellbeing ◽  
Work And Family ◽  
Life Course Perspective ◽  
Full Time ◽  
Social Origin ◽  
Employment Trajectories ◽  
Family And Work ◽  
The Life Course ◽  
Family Trajectories

AbstractInformed by the life course perspective, this paper investigates whether and how employment and family trajectories are jointly associated with subjective, relational and financial wellbeing later in life. We draw on data from the Swiss Household Panel which combines biographical retrospective information on work, partnership and childbearing trajectories with 19 annual waves containing a number of wellbeing indicators as well as detailed socio-demographic and social origin information. We use sequence analysis to identify the main family and work trajectories for men and women aged 20–50 years old. We use OLS regression models to assess the association between those trajectories and their interdependency with wellbeing. Results reveal a joint association between work and family trajectories and wellbeing at older age, even net of social origin and pre-trajectory resources. For women, but not for men, the association is also not fully explained by proximate (current family and work status) determinants of wellbeing. Women’s stable full-time employment combined with traditional family trajectories yields a subjective wellbeing premium, whereas childlessness and absence of a stable partnership over the life course is associated with lower levels of financial and subjective wellbeing after 50 especially in combination with a trajectory of weak labour market involvement. Relational wellbeing is not associated with employment trajectories, and only weakly linked to family trajectories among men.

scholarly journals Predictors of Mental Health after the First Wave of the COVID-19 Pandemic in Poland

2021 ◽  
Vol 11 (5) ◽  
pp. 544
Author(s):  
Piotr Długosz
Keyword(s):  
Mental Health ◽  
Survey Method ◽  
Hierarchical Regression ◽  
Secondary Effects ◽  
Research Material ◽  
Polish Society ◽  
On Line ◽  
Line Survey ◽  
Psychological Features ◽  
Society Research

The aim of the article is to determine the predictors of mental health among Polish society. Research was conducted after the first wave of the pandemic. Due to such an approach, it was possible to determine whether the secondary effects of the pandemic have impacted on mental health, in addition to socio-demographic and psychological factors. In order to gather the research material, the CAWI on-line survey method was applied and carried out within the framework of the Ariadna Research Panel on a sample of 1079 Poles, aged 15 and over. The FCV-19S scale, which is used to measure the fear of COVID-19 was applied in the measurement. It is a verified diagnostic instrument used to measure mental health across a range of countries. The results of a hierarchical regression analysis have shown that the factors which increase the level of fear of COVID-19 are demographic, social and psychological features, as well as attitudes towards the pandemic. The results of research indicate the significance of social context in the analysis, and contribute to the explanation of the effects of disasters and cataclysms.

scholarly journals The Catecholaldehyde Hypothesis for the Pathogenesis of Catecholaminergic Neurodegeneration: What We Know and What We Do Not Know

2021 ◽  
Vol 22 (11) ◽  
pp. 5999
Author(s):  
David S. Goldstein
Keyword(s):  
Lewy Bodies ◽  
Alpha Synuclein ◽  
Future Research ◽  
Catecholamine Metabolism ◽  
Secondary Effects ◽  
Drug Induced ◽  
Neuronal Homeostasis ◽  
Mitochondrial Functions ◽  
Environmental Agents ◽  
Spontaneous Oxidation

3,4-Dihydroxyphenylacetaldehyde (DOPAL) is the focus of the catecholaldehyde hypothesis for the pathogenesis of Parkinson’s disease and other Lewy body diseases. The catecholaldehyde is produced via oxidative deamination catalyzed by monoamine oxidase (MAO) acting on cytoplasmic dopamine. DOPAL is autotoxic, in that it can harm the same cells in which it is produced. Normally, DOPAL is detoxified by aldehyde dehydrogenase (ALDH)-mediated conversion to 3,4-dihydroxyphenylacetic acid (DOPAC), which rapidly exits the neurons. Genetic, environmental, or drug-induced manipulations of ALDH that build up DOPAL promote catecholaminergic neurodegeneration. A concept derived from the catecholaldehyde hypothesis imputes deleterious interactions between DOPAL and the protein alpha-synuclein (αS), a major component of Lewy bodies. DOPAL potently oligomerizes αS, and αS oligomers impede vesicular and mitochondrial functions, shifting the fate of cytoplasmic dopamine toward the MAO-catalyzed formation of DOPAL—destabilizing vicious cycles. Direct and indirect effects of DOPAL and of DOPAL-induced misfolded proteins could “freeze” intraneuronal reactions, plasticity of which is required for neuronal homeostasis. The extent to which DOPAL toxicity is mediated by interactions with αS, and vice versa, is poorly understood. Because of numerous secondary effects such as augmented spontaneous oxidation of dopamine by MAO inhibition, there has been insufficient testing of the catecholaldehyde hypothesis in animal models. The clinical pathophysiological significance of genetics, emotional stress, environmental agents, and interactions with numerous proteins relevant to the catecholaldehyde hypothesis are matters for future research. The imposing complexity of intraneuronal catecholamine metabolism seems to require a computational modeling approach to elucidate clinical pathogenetic mechanisms and devise pathophysiology-based, individualized treatments.

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