Starker Start ins Studium: Qualitätspakt Lehre
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A new method for size resolved chemical analysis of nucleation mode aerosol particles (size range from ~10 to ~30 nm) is presented. The Thermal Desorption Differential Mobility Analyzer (TD-DMA) uses an online, discontinuous principle. The particles are charged, a specific size is selected by differential mobility analysis and they are collected on a filament by electrostatic precipitation. Subsequently, the sampled mass is evaporated in a clean carrier gas and analyzed by a chemical ionization mass spectrometer. Gas phase measurements are performed with the same mass spectrometer during the sampling of particles. The characterization shows reproducible results, with a particle size resolution of 1.19 and the transmission efficiency for 15 nm particles being slightly above 50 %. The signal from the evaporation of a test substance can be detected starting from 0.01 ng and shows a linear response in the mass spectrometer. Instrument operation in the range of pg/m3 is demonstrated by an example measurement of 15 nm particles produced by nucleation from dimethylamine, sulfuric acid and water.
A new method for size-resolved chemical analysis of nucleation mode aerosol particles (size range from ∼10 to ∼30 nm) is presented. The Thermal Desorption Differential Mobility Analyzer (TD-DMA) uses an online, discontinuous principle. The particles are charged, a specific size is selected by differential mobility analysis and they are collected on a filament by electrostatic precipitation. Subsequently, the sampled mass is evaporated in a clean carrier gas and analyzed by a chemical ionization mass spectrometer. Gas-phase measurements are performed with the same mass spectrometer during the sampling of particles. The characterization shows reproducible results, with a particle size resolution of 1.19 and the transmission efficiency for 15 nm particles being slightly above 50 %. The signal from the evaporation of a test substance can be detected starting from 0.01 ng and shows a linear response in the mass spectrometer. Instrument operation in the range of pg m−3 is demonstrated by an example measurement of 15 nm particles produced by nucleation from dimethylamine, sulfuric acid and water.
Introduction Current: evidence suggests that the loss of mechanoreceptors after anterior cruciate ligament (ACL) tears might be compensated by increased cortical motor planning. This occupation of cerebral resources may limit the potential to quickly adapt movements to unforeseen external stimuli in the athletic environment. To date, studies investigating such neural alterations during movement focused on simple, anticipated tasks with low ecological validity. This trial, therefore, aims to investigate the cortical and biomechanical processes associated with more sport-related and injury-related movements in ACL-reconstructed individuals.
Methods and analysis: ACL-reconstructed participants and uninjured controls will perform repetitive countermovement jumps with single leg landings. Two different conditions are to be completed: anticipated (n=35) versus unanticipated (n=35) successful landings. Under the anticipated condition, participants receive the visual information depicting the requested landing leg prior to the jump. In the unanticipated condition, this information will be provided only about 400 msec prior to landing. Neural correlates of motor planning will be measured using electroencephalography. In detail, movement-related cortical potentials, frequency spectral power and functional connectivity will be assessed. Biomechanical landing quality will be captured via a capacitive force plate. Calculated parameters encompass time to stabilisation, vertical peak ground reaction force, and centre of pressure path length. Potential systematic differences between ACL-reconstructed individuals and controls will be identified in dependence of jumping condition (anticipated/ unanticipated, injured/uninjured leg and controls) by using interference statistics. Potential associations between the cortical and biomechanical measures will be calculated by means of correlation analysis. In case of statistical significance (α<0.05.) further confounders (cofactors) will be considered.
Ethics and dissemination: The independent Ethics Committee of the University of Frankfurt (Faculty of Psychology and Sports Sciences) approved the study. Publications in peer-reviewed journals are planned. The findings will be presented at scientific conferences.
Trial status: At the time of submission of this manuscript, recruitment is ongoing.
Trial registration number: NCT03336060; Pre-results.
Der Beitrag analysiert Ungleichheitseffekte des 2007 eingeführten Elterngelds. Wir zeigen, dass die familienpolitische Einführung der Ressource Elterngeld die Einkommensungleichheiten der Produktions- bzw. Erwerbssphäre auf die Reproduktions- bzw. Familiensphäre übertragen hat. Das Elterngeld trägt damit aber zumindest bislang nicht (wie angedacht) zur Aufhebung der asymmetrischen Aufteilung von (entlohnter) Erwerbsarbeit und (nicht-entlohnter) Sorgearbeit zwischen Elternteilen bei. Stattdessen verdeutlicht unsere räumlich orientierte Untersuchung des Elterngeldbezugs ungleiche Muster in den Bewältigungsmöglichkeiten kinderbezogener Sorgearbeiten. Die an der ungleichen Geographie des Elterngelds deutlich werdende Ausdifferenzierung von Bearbeitungschancen von Elternschaft interpretieren wir als Ausdruck von sozialen Spaltungstendenzen auf dem Gebiet der Reproduktion, die von der familienpolitischen Einführung des Elterngelds forciert worden sind.
Gute Lehre muss sichtbar werden, und über gute Lehre muss gesprochen werden! Ein Ziel unseres Programms "Starker Start ins Studium" ist eine verbesserte Kommunikationsstruktur über und eine verbesserte Kommunikationskultur in der Lehre. Der "Tag der Lehre" der Goethe-Universität, der den Rahmen für die Starker Start-Tagung abgegeben hat, hat mit mehr als 150 Gästen dazu beigetragen. ...
Ein Jahr intensiver Vorbereitungen liegt nun hinter uns. Richtig, ein Jahr Vorbereitung für eine einwöchige Konferenz! Doch auch dieses Jahr hat sich wieder gezeigt wie wichtig diese intensive Vorbereitung ist: Die Studierenden haben sich vertiefte Kenntnisse über die Vereinten Nationen und die zu vertretenden Länder Israel und Frankreich angeeignet und neue Kompetenzen erworben. ...
Ein Jahr lang vorbereiten, um an einer einwöchigen Konferenz teilzunehmen? Das klingt zunächst nach schlechter Zeitplanung. Doch auch dieses Jahr zeigte sich, dass die Zeit sinnvoll investiert war: Die Studierenden haben sich ein sehr breites Portfolio an Kenntnissen und Kompetenzen erarbeitet. Dafür ist ein Jahr fast etwas zu kurz gewesen. ...
Nach langer Vorbereitung war es endlich soweit, die National Model United Nations (NMUN)-Delegation der Goethe-Universität stand im Konferenzhotel und war voller Vorfreude, Aufregung und Tatendrang.
Unter allen Simulationen ist das National Model United Nations in New York dabei die größte und ist in ihrer kulturellen und thematischen Vielfalt kaum zu übertreffen. Innerhalb der Simulation wird die Arbeit der verschiedenen Komitees der Vereinten Nationen mit realen Themen nachgestellt. Die Mitglieder der Delegationen übernehmen dabei die Aufgaben und Positionen der Diplomaten und vertreten die Interessen, Werte und Standpunkte des ihnen zugewiesenen Landes. In diesem Jahr repräsentierten wir die Republik Kuba. ...
Bei winterlich kühler Witterung Ende März kamen wir als Delegation der Goethe-Universität Frankfurt zum National Model United Nations (NMUN) 2014 in New York an. Damit wurde im Bezug auf die Temperaturen, welche in den vorangegangenen Jahren stets frühlingshaft mild gewesen waren, eine Tradition gebrochen; nicht aber im Bezug auf die Motivation der teilnehmenden Frankfurter Studierenden. Wir freuten uns sehr und blickten mit Aufregung den bevorstehenden Tagen entgegen. ...
Perfectionism nowadays is frequently understood as a multidimensional personality trait with two higher-order dimensions of perfectionistic strivings and perfectionistic concerns. While perfectionistic concerns are robustly found to correlate with negative outcomes and psychological malfunctioning, findings concerning the outcomes of perfectionistic strivings are inconsistent. There is evidence that perfectionistic strivings relate to psychological maladjustment on the one hand but to positive outcomes on the other hand as well. Moreover, perfectionistic strivings and perfectionistic concerns frequently showed substantial overlap. These inconsistencies of differential relations and the substantial overlap of perfectionistic strivings and perfectionistic concerns raise questions concerning the factorial structure of perfectionism and the meaning of its dimensions. In this study, several bifactor models were applied to disentangle the common variance of perfectionistic strivings and perfectionistic concerns at the item level using Hill et al.’s (2004) Perfectionism Inventory (PI). The PI measures a broad range of perfectionism dimensions by four perfectionistic strivings and four perfectionistic concerns subscales. The bifactor-(S – 1) model with one general factor defined by concern over mistakes as the reference facet, four specific perfectionistic strivings factors, and three specific perfectionistic concerns factors showed acceptable fit. The results revealed a clear separation between perfectionistic strivings and perfectionistic concerns, as the general factor represented concern over mistakes, while the perfectionistic strivings factors each explained a substantial amount of reliable variance independent of the general factor. As a result, factor scores of the specific perfectionistic strivings factors and the general factor had differential relationships with achievement motivation, neuroticism, conscientiousness, and self-efficacy that met with theoretical expectations, while results for manifest subscale scores were ambiguous. Our results question the existence of reliable sub-constructs of perfectionistic concerns independent of the general factor when defined by concern over mistakes.