Argos container, core and extension framework

With the emergence of the internet and e-commerce in the 90’s new common problems arose when developing applications that span the internet. These common problems include among others scalability, robustness, networking, database usage and heterogeneity. Software developers creating internet applications saw themselves reinventing the wheel repeatedly. This lead to the creation of middleware systems that aimed to solve these common problems. This thesis will present Argos which uses a different way of building middleware systems. Argos is able to provide tailored, flexible and extensible middleware support using reflection, dependency injection, Java Management Extensions (JMX) notifications and hot deployment. The result is a platform capable of tackling domain specific challenges. It provides rapid development of feature rich applications for managing and processing information. Argos has gone through thorough testing proving production stability

Pendlingen i Hovedstadsregionen

Pendling er betegnelse for det forhold, at en person i arbejde bor et sted og arbejder et sted. Pendlingen inden for et område er således antallet af personer med bopæl og arbejde i om­ rådet. Når befolkningen (og hermed normalt også antallet af beskæftigede) vokser/falder, da vokser/falder pendlingen tilsvarende. For at kunne karakterisere (udviklingen i) pend­ ling, er (udviklingen i) fordelingen eller strukturen af bolig/arbejdsstedsrelationerne inden for Hovedstadsregionen analyseret. Det synes som om, pendlingsudviklingen moduleres af to fænomener: Lokalisering af boliger og arbejdspladser . En tendens hos den enkelte aktør (pendleren) til at pendle ”mere

Analysis of the internal heat losses in a thermoelectric generator

A 3D thermoelectric numerical model is used to investigate different internal heat loss mechanisms for a thermoelectric generator with bismuth telluride p- and n-legs. The model considers all thermoelectric effects, temperature dependent material parameters and simultaneous convective, conductive and radiative heat losses, including surface to surface radiation. For radiative heat losses it is shown that for the temperatures considered here, surface to ambient radiation is a good approximation of the heat loss. For conductive heat transfer the module efficiency is shown to be comparable to the case of radiative losses. Finally, heat losses due to internal natural convection in the module is shown to be negligible for the millimetre sized modules considered here. The combined case of radiative and conductive heat transfer resulted in the lowest efficiency. The optimized load resistance is found to decrease for increased heat loss. The leg dimensions are varied for all heat losses cases and it is shown that the ideal way to construct a TEG module with minimal heat losses and maximum efficiency is to either use a good insulating material between the legs or evacuate the module completely, and use small and wide legs closely spaced.Comment: 11 pages, 9 figure