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The internationalization of for-profit higher education institutions in the United States: seeking legitimacy and responding to market forces via international student mobility
No full textInstitutional internationalization has been extensively researched in US higher education, particularly with reference to the public and private nonprofit four-year sector. This study contributes to an emerging body of literature that explores internationalization in other higher education sectors and forms, using an explanatory mixed methods research approach to examine for-profit higher education institutions. We draw from business, economics, and sociology literature to develop a theoretical framework that helps explain observed internationalization activity within for-profit higher education and apply it to examine trends in in-bound and out-bound international student mobility. Specifically, we focus on the economic rationale for the internationalization of higher education, the notion of for-profit higher education institutions as privately-owned entities, and key theoretical constructs, namely neo-institutionalism, market imperfection, and niche market orientation. The quantitative portion of our study helps us to understand the extent to which actual in-bound and intended out-bound international student mobility is present in for-profit US higher education. Our qualitative analysis informs how for-profit institutions market themselves to compete for international students, what strategies these institutions use to promote study abroad, and the relevance of an institution’s market niche regarding student mobility. Our findings indicate that while neo-institutional theory, market imperfections, and niche market orientation help us understand international student mobility in for-profit higher education, these institutions also vary in which activities and target audiences they exhibit such behavior toward. Given the significant role that for-profit institutions play in the US higher education landscape, analysis of how and why these institutions engage in aspects of internationalization is warranted
Materialcharakterisierung regionaler Sekundärrohstoffe zur Entwicklung nachhaltiger Bindemittelsysteme für Betonfertigteile
No full textIn dieser Masterarbeit wurde die mechanochemische Aktivierung regionaler Tone aus bergbaulichen Reststoffströmen untersucht und deren Eignung als klimafreundliche Zement- bzw. Klinkerersatzstoffe hinsichtlich des Einflusses auf strukturelle, physikalische und reaktive Eigenschaften bewertet. Die mechanochemische Aktivierung führte zu einer deutlichen Veränderung der Partikeleigenschaften: Die spezifische BET-Oberfläche wurde verringert und die Korngrößenverteilung in den gröberen Bereich verschoben. Strukturelle Untersuchungen mittels Rietveld-Analyse belegten eine erfolgreiche Amorphisierung der Kristallstruktur. Diese strukturellen Veränderungen führten zu einer gesteigerten Reaktivität der Tone, die sich in einer erhöhten Wärmeentwicklung widerspiegelten.
Gleichzeitig konnte die Wasseraufnahme signifikant reduziert und die Verarbeitbarkeit der Materialien deutlich verbessert werden. In Mörtelsystemen resultierte der Einsatz der mechanochemisch aktivierten Tone in einer erhöhten Druckfestigkeit, womit die Eignung als Klinker- oder Zementsubstitut nachgewiesen wurde
Evidenter Mangel an Evidenz
No full textAm Beispiel der Bedeutung des Interesses für das Erlernen von Mathematik wird diskutiert, inwieweit der aktuelle Stand empirischer Forschung schon ausreichend Evidenz für didaktische Entscheidungen liefert. Es wird geschlussfolgert, dass weitere Forschungen notwendig sind
Rezension: Helmuth Kiesel: Schreiben in finsteren Zeiten: Geschichte der deutschsprachigen Literatur 1933-1945. München: Beck, 2025. 1392 S. (Geschichte der deutschen Literatur von den Anfängen bis zur Gegenwart ; 11). ISBN 978-3-406-71611-9
No full textAbschließender Band 11 der Buchreihe "Geschichte der deutschen Literatur von den Anfängen bis zur Gegenwart". Diese bisher umfangreichste Darstellung der binnendeutschen Literatur und der Exilliteratur - einschließlich der Autoren der "Inneren Emigration" und der NS-Autoren - basiert auf jahrzehntelanger Eigenlektüre und bewegt sich durchgehend auf einem sehr hohen Qualitätsstandard
Designing markets for CO₂ emissions and other pollutants
No full textThe objective of this paper is to show how to initiate a market for carbon dioxide and other greenhouse gases by introducing a feasible system of tradeable emission permits, which can be applied as an efficient instrument of environmental policy in single countries and in the whole European Community after the EC internal market is in force. Part one of the paper summarizes the relevant framework conditions of the CO2 problem and briefly reviews possible instruments for CO2 control. Based on this, part two develops an alternative to traditional permit systems. It describes the notion of tradeable emission coupons and applies this concept to CO2 emissions. It deals with the intertemporal allocation of CO2 emissions, opts for the initial distribution of CO2 coupons by auction, stipulates the carbon content of fuel as the assessment base, selects importers and producers as the appropriate addressees of the coupon system for CO2 and solves the (system's initial) problem with end-of-pipe technologies. Finally, it shows how to extend the coupon system to other greenhouse gases. Part three of the paper studies the performance of the system in the framework of the EC's future internal market. And finally, part four deals with a possible application of the emission coupon system to pollutants other than greenhouse gases
Turning generative artificial intelligence into a reflective metacognitive co-regulator: toward designing a generative artificial intelligence-enhanced learning object for self-reflection
No full textDisturbed regulation of immunothrombosis in cerebral ischemia associated with SARS-CoV-2 infection
No full textBackground: During the COVID-19 pandemic, it became evident that an infection with SARS-CoV-2 is associated with an increased predisposition for thrombembolic events. Recent studies suggest an excessive neutrophil extracellular trap (NET)-formation in response to SARS-CoV-2, which is considered a hallmark in immunothrombosis. A better understanding of the (dys)regulation of NET-formation in COVID-19 may provide the basis for new therapeutic strategies.
Methods: We conducted a pilot study with a total of 84 patients in three groups matched in a 1:1:1 fashion: Group 1: patients with acute ischemic stroke (AIS) or transient ischemic attack (TIA) and SARS-CoV-2 infection, Group 2: patients with AIS and no SARS-CoV-2 infection and Group 3: patients with SARS-CoV-2 infection and no AIS or TIA. Venous blood samples were collected from all patients and subsequently analyzed for NET-specific markers, NET regulators (Deoxyribonuclease (DNase) activity) and a panel of cytokines.
Results: Citrullinated histone3 (H3cit) and elastase levels were higher in groups with SARS-CoV-2 infection (Groups 1 and 3) compared to patients without ((group 1: H3cit = 2.9 (1.11-6.89) ng/mL, elastase = 312.1 (162-435.4) ng/mL and group 3: H3cit = 3.31 (2.03-7.97) ng/mL and elastase = 433.1 (281-783.8) ng/mL) vs. group 2: H3cit = 1.17 (0.61-2.15) ng/mL), elastase = 195.1 (91.99-386.9) ng/mL). No relevant differences were found regarding other measured NET-marker (myeloperoxidase, LL-37). DNase activity was lower in group 1 (6.12 (4.97-6.78) pmol/mL/min) compared to both other groups (group 2: (7.16 (5.88-7.85) pmol/mL/min) (p=0.018) and group 3 (7.19 (5.52-8.54) pmol/mL/min) (p=0.013).
Conclusion: This pilot data suggest that a disturbed regulation of NETs in patients with SARS-CoV-2 infection may play a role in SARS-CoV-2 associated cerebral ischemia. These results highlight the importance of further investigating the role of NETs in immunothrombosis in the context of viral infections, to better understand its potential as a target for therapeutic strategies
