Coming Back to Basic Concepts of the Context

The use of ethnographic approaches to explore innovative learning contexts places the concept of context at the centre of discussion on basic categories. Further, ethnography in Online-learning within a virtual context as well as shifts between online- and off-line contexts presents a challenge for ethnographic methodology and analysis. In this article I set out to address the challenge and reflect on the categories and models for empirical analysis. Going back to the basic concept of context and ‘text-in-context’ my aim is to discuss the ethnographic significance of the learning context thereby shedding light on the strong context markers. Examples will be adduced in relation to previous fieldwork in IT-upper secondary schools as well asin relation to current fieldwork in scholastic-, profession-oriented and academic learning contexts

Self‐Reported Periodontal Disease: Validation in an Epidemiological Survey

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/141948/1/jper1407.pd

Application of a Diverging-Converging Duct to a FSAE Radiator System

The focus of this paper is the design process for the radiator ducting on the WashU Formula Society of Automotive Engineers racing team vehicle. The side-pods for the WUFR-19 vehicle are designed as a diverging-converging duct around the radiator in order to provide a sufficient mass flow rate through the heat exchanger to cool the engine, while minimizing drag on the vehicle. Internal computational fluid dynamics simulations are run in ANSYS Fluent on an individual channel of the radiator core. A parametric setup is used to iterate through multiple inlet conditions. The goal of these simulations is to determine the relationship between the ducting inlet size, ram pressure and mass flow rate through the radiator core, while also accounting for heat transfer from the radiator in airflow conditions. The usage of internal simulations with varying inlet conditions reduces simulation time when compared to external side-pod simulations that have higher computational requirements and would require geometry modification between simulations. Results show that reducing the inlet size increases the pressure drop across and mass flow rate through the radiator for inlet sizes above 80% of the cross-sectional area of the radiator. Smaller inlet sizes begin to restrict airflow causing the mass flow rate to decrease. An inlet size of 70% of the cross-sectional area of the radiator and an outlet size of 80% of the inlet size were implemented in order to fully cool the engine and minimize drag on the vehicle

Periodontal disease: associations with diabetes, glycemic control and complications

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73645/1/j.1601-0825.2008.01442.x.pd

Evidensbevægelsen i spændingsfeltet mellem sikker viden og ikke-viden

Evidensbevægelsens fokus på viden om ’hvad, der virker’ er vigtigt også for udviklingen af en praksis-orienteret uddannelsesforskning. Men samtidig er der tendenser i evidensbevægelsen, der bekymrer. Trods hensigten risikerer evidensmodellernes vidensproduktion og praksis-anbefalinger at få skær af at være pseudokonkret virksomhed. Og selv om evidensprincipper hævder metodisk sys- tematik i dataindsamlinger og effektmålinger, så mangler afklaring af forskningsspørgsmål og ana- lyse af resultaterne empirisk stringens og skarp- hed. I artiklen forfølges de bekymrende tendenser. Samtidig fremanalyserer artiklen gennemgående træk ved evidensmodellerne og deres relation til forskningsstrategier og forskningsopgaver. Effektmålingernes dilemma eksemplificeres og iden- tificeres i spændingsfeltet mellem sikker viden, common sense og ikke-vide