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Defect and solvent engineering of optoelectronic response in 2D materials: A DFT study on graphene, silicon carbide, and boron nitride for solar cell sensitizers
Get PDFSmall and Stable Pancreatic Cysts Are Reassuring During Surveillance : Results From the PACYFIC Trial
Get PDFPancreatic cysts are increasingly discovered on imaging studies performed for unrelated conditions. Currently, surveillance of these lesions poses a substantial burden on patients, and health care recourses. We hypothesized that individuals with small and stable cysts have a diminutive risk of progressing to high-grade dysplasia (HGD) or pancreatic cancer (PC) that is similar to that in the general population.This nested PACYFIC-study is a collaboration among 44 centers in Europe and Northern-America, and investigates the risk of HGD and PC for different cyst sizes and growth rates in participants without baseline worrisome features (WF) or high-risk stigmata (HRS).Of the 2369 PACYFIC participants, 975 met the inclusion criteria, with a mean age of 67 years (SD 13) and 65% being female. Of these, 438 individuals (45%) had a baseline small cyst size ( 0.05). Slow growth was protective against the development of WF or HRS (HR 0.4 [0.2-0.6], p < 0.001) and HGD or PC (HR 0.04 [95% CI 0.02-0.12], p < 0.001). Individuals with small, stable sized cysts without baseline WF or HRS did not have a higher risk of HGD or PC than the general population (standardized incidence ratio [SIR] 1.13 [95% CI 0.01-6.30]).Cyst size < 15 mm and growth rate < 2.5 mm/year appear to be "reassuring" features associated with a negligible risk of developing WF or HRS and HGD or PC. For cysts with these characteristics-and without baseline WF or HRS-less intensive surveillance (than currently recommended) or even cessation may be appropriate
English summary: Gröchenig, Karlheinz: Schoenberg's theory of totally positive functions and the Riemann zeta function. Sampling, approximation, and signal analysis—harmonic analysis in the spirit of J. Rowland Higgins, 193--210, Appl. Numer. Harmon. Anal., Birkhäuser/Springer, Cham, [2023], ©2023.
No full textAnalysing the relationship between education and economic growth in Uzbekistan: a VAR model approach
Get PDFThis paper explores the relationship between education and economic growth in Uzbekistan usingthe Vector Autoregressive (VAR) model. Employing time-series data from 1991 to 2023, the studyexamines how government expenditure on education, industry value-added, and GDP per capitainteract dynamically. The results reveal that government expenditure on education significantlyinfluences economic growth, with impulse response analysis showing persistent and substantialimpacts. However, the contributions of industry value-added and GDP per capita appear more limitedand transient. Variance decomposition confirms the dominant role of education expenditure,explaining the largest share of forecast error variance over time. The findings underscore the criticalrole of educational investment in fostering long-term economic development, particularly intransitioning economies like Uzbekistan. This study contributes to the literature by providingempirical evidence specific to Uzbekistan, addressing gaps in previous qualitative research, andoffering actionable insights for policymakers. The findings align with human capital theory andsuggest that enhancing educational infrastructure and quality is essential for sustainable economicgrowth
Daniel Anisits, un Propulsor Húngaro de las Ciencias Naturales en Paraguay
Get PDFEl presente artículo tiene como objetivo estudiar el trabajo exploratorio multifacético de un científico húngaro, menos conocido en América Latina, así como su contribución al desarrollo de las ciencias naturales en Paraguay, Brasil, Argentina, Alemania y Hungría en las últimas décadas del siglo XIX y los primeros años del siglo XX. Además de sus investigaciones botánicas, zoológicas y de ictiología y su extraordinario trabajo de recolección de una gran variedad de especies de plantas y animales, el profesor Dániel Anisits también llevó a cabo mediciones meteorológicas en Paraguay, país en el que vivió por un cuarto de siglo con su madre y hermana. Tras dejar atrás una prometedora carrera como farmacéutico en su país natal, el joven húngaro se convirtió en un respetado y reconocido profesor universitario en los círculos científicos paraguayos y sudamericanos. Para presentar sus logros y sus amplios contactos académicos se utilizarán fuentes húngaras y latinoamericanas contemporáneas
Ethnomathematical test for mathematical creative thinking
Get PDFMathematical creative thinking (MCT) is now globally recognized as a vital 21st-century skill for students in all areas of education. However, the absence of robust psychometric properties in MCT assessments, particularly in the context of ethnomathematics, poses a significant obstacle to incorporating MCT into school curricula. This study aimed to evaluate the psychometric properties of the Mathematical Creative Thinking-Ethnomathematics Based Test (MCTBE) using the Rasch model. Specifically, it sought to determine whether the data align with the Rasch model measurement, assess the MCT abilities of a sample of Indonesian secondary school students, and investigate how test items function differently based on gender. A total of 186 secondary school students, with an average age of 13.94 ± 0.89 years, participated in the study. The results indicated that the data fit the Rasch model measurement effectively. Additionally, there was no Differential Item Functioning (DIF) in the test criteria, and MCT ability varied by sex, ethnicity, and grade level. This work broadens the field of MCT evaluation through ethnomathematical test, providing meaningful guidance for educational researchers. © 2025 The Author(s
