Experiencing Difficulties: English Language Issues Among Immersed Third Culture Kids

Third Culture Kids (TCKs) are defined as children who have spent a significant part of their developmental years living in, or interacting with two or more cultural environments. The levels, abilities, and use of the heritage language of TCKs returning to their host country from being immersed in a second language environment can cause difficulties. This case study explored the experiences of immersed TCKs using English upon reentry to the United States. The participants are adult TCKs, have English as their heritage language, and were immersed in a second language environment as a child. This research found the following four major themes described by the participants: experiencing difficulties in general, experiencing a lack of confidence, experiencing cycles, and experiencing shifting identities

Large-amplitude internal waves sustain coral health during thermal stress

Ocean warming is a major threat for coral reefs causing widespread coral bleaching and mortality. Potential refugia are thus crucial for coral survival. Exposure to large-amplitude internal waves (LAIW) mitigated heat stress and ensured coral survival and recovery during and after an extreme heat anomaly. The physiological status of two common corals, Porites lutea and Pocillopora meandrina, was monitored in host and symbiont traits, in response to LAIW-exposure throughout the unprecedented 2010 heat anomaly in the Andaman Sea. LAIW-exposed corals of both species survived and recovered, while LAIW-sheltered corals suffered partial and total mortality in P. lutea and P. meandrina, respectively. LAIW are ubiquitous in the tropics and potentially generate coral refuge areas. As thermal stress to corals is expected to increase in a warming ocean, the mechanisms linking coral bleaching to ocean dynamics will be crucial to predict coral survival on a warming plane

In vivo investigation of open-pored magnesium scaffolds LAE442 with different coatings in an open wedge defect

The magnesium alloy LAE442 showed promising results as a bone substitute in numerous studies in non-weight bearing bone defects. This study aimed to investigate the in vivo behavior of wedge-shaped open-pored LAE442 scaffolds modified with two different coatings (magnesium fluoride (MgF2, group 1)) or magnesium fluoride/calcium phosphate (MgF2/CaP, group 2)) in a partial weight-bearing rabbit tibia defect model. The implantation of the scaffolds was performed as an open wedge corrective osteotomy in the tibia of 40 rabbits and followed for observation periods of 6, 12, 24, and 36 weeks. Radiological and microcomputed tomographic examinations were performed in vivo. X-ray microscopic, histological, histomorphometric, and SEM/EDS analyses were performed at the end of each time period. µCT measurements and X-ray microscopy showed a slight decrease in volume and density of the scaffolds of both coatings. Histologically, endosteal and periosteal callus formation with good bridging and stabilization of the osteotomy gap and ingrowth of bone into the scaffold was seen. The MgF2 coating favored better bridging of the osteotomy gap and more bone-scaffold contacts, especially at later examination time points. Overall, the scaffolds of both coatings met the requirement to withstand the loads after an open wedge corrective osteotomy of the proximal rabbit tibia. However, in addition to the inhomogeneous degradation behavior of individual scaffolds, an accumulation of gas appeared, so the scaffold material should be revised again regarding size dimension and composition

Large-amplitude internal waves benefit corals during thermal stress

Tropical scleractinian corals are particularly vulnerable to global warming as elevated sea surface temperatures (SSTs) disrupt the delicate balance between the coral host and their algal endosymbionts, leading to symbiont expulsion, mass bleaching and mortality. While satellite sensing of SST has proved a reliable predictor of coral bleaching at the regional scale, there are large deviations in bleaching severity and mortality on the local scale that are poorly understood. Here, we show that internal waves play a major role in explaining local coral bleaching and mortality patterns in the Andaman Sea. Despite a severe region-wide SST anomaly in May 2010, frequent upslope intrusions of cold sub-pycnocline waters due to breaking large-amplitude internal waves (LAIW) mitigated coral bleaching and mortality in shallow waters. In LAIW-sheltered waters, by contrast, bleaching-susceptible species suffered severe bleaching and total mortality. These findings suggest that LAIW benefit coral reefs during thermal stress and provide local refugia for bleaching-susceptible corals. LAIW are ubiquitous in tropical stratified waters and their swash zones may thus be important conservation areas for the maintenance of coral diversity in a warming climate. Taking LAIW into account can significantly improve coral bleaching predictions and provide a valuable tool for coral reef conservation and management

Unterstützung beim Übergang von der Schule zur Hochschule durch präzise Studieninformationen und Online-Self-Assessments

Der Beitrag beschreibt das Projekt OptimiSt der Universität Marburg, das bei der Wahl eines individuell passenden Studiengangs Hilfestellung bietet. Auf Basis wissenschaftlicher Anforderungsanalysen werden zielgruppengerechte Studiengangswebseiten erstellt, die eine valide und umfassende Informationsbasis für Studieninteressierte bieten. Als zweite Maßnahme werden studiengangsspezifische Online-Self-Assessments für eine realistische Einschätzung der eigenen Passung entwickelt. Ziel des Beitrags ist es, die gewonnenen Praxiserfahrungen zu bündeln und Hinweise für die Realisierung ähnlicher Projekte zu geben. 19.12.2014 | Svea Hasenberg, Kai Guttschick, Lothar Schmidt-Atzert, Gerhard Stemmler, Günter Kohlhaas, Marlene Schütz & Miriam Prüssner (Marburg