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Hong Kong Journey
(2010)
Load Matching and Grid Interaction of Net Zero Energy Buildings. EuroSun Conference 2010, Graz
(2010)
“Net Zero Energy Building” has become a prominent wording to describe the synergy of energy efficient building and renewable energy utilization to reach a balanced energy budget over a yearly cycle. Taking into account the energy exchange with a grid infrastructure overcomes the limitations of seasonal energy storage on-site. Even though the wording “Net Zero Energy Building” focuses on the annual energy balance, large differences may occur between solution sets in the amount of grid interaction needed to reach the goal. The paper reports on the analysis of example buildings concerning the load matching and grid interaction. Indices to describe both issues are proposed and foreseen as part of a harmonized definition framework. The work is part of subtask A of the IEA SHCP Task40/ECBCS Annex 52: “Towards Net Zero Energy Solar Buildings”.
Null-Energie-Häuser
(2010)
We present a threat and risk-driven methodology to security requirements engineering. Our approach has a strong focus on gathering, modeling, and analyzing the environment in which a secure ICT-system to be built is located. The knowledge about the environment comprises threat and risk models. This security-relevant knowledge is used to assess the adequacy of security mechanisms, which are selected to establish security requirements.
Eine Anforderung im 21. Jahrhunderts ist durch die technischen Möglichkeiten die Umsetzung virtueller Arbeitsumgebungen für die Wissenschaft zu realisieren. Unab-hängig von Standort-, Ressourcen- und Zugangshürden sollen Wissenschaftler auf die für ihre Arbeit notwendigen Programme, Forschungsdaten und andere Quellen zugreifen können. Bibliothekare erfüllen seit jeher die Position des Vermittlers von publizierten Informationen und sind somit an der Wissenschaft beteiligt. Angesichts der Entwicklungen ändert sich nun aber ebenfalls das Aufgabengebiet von Bibliothekaren. Die vorliegende Arbeit beschäftigt sich mit der Position von Bibliothekaren in dieser veränderten Arbeitsumgebung der Wissenschaft. Diesbezüglich werden derzeitige Entwicklungen im Kontext e-Science und Aktivitäten bezüglich der Rollenzuschreibungen von Akteuren im Forschungsdatenmanagement betrachtet. Das Ergebnis soll verdeutlichen, welche Rolle Bibliothekare übernehmen können, in dem die notwendige Kompetenzen und Tätigkeitsfelder aufgeführt werden.
"Doing Space and Ethnography":v Ethnographische Verfahren in der sportbezogenen Raumforschung
(2010)
Eine besondere Form der Migration ist die irreguläre Migration. Irreguläre Migration ist weiter verbreitet, als die reguläre Migration und gehört zu den am schnellsten wachsenden Wanderungsformen weltweit. Der Themenkomplex irreguläre Migration steht im Fokus dieser Arbeit. Schwerpunkt sind dabei die Instrumente zur Steuerung irregulärer Migration von Sub-Sahara Afrika nach Europa. Explizit wird in dieser Arbeit der Frage nachgegangen, inwieweit die angewandten Instrumente tatsächlich in der Lage sind irreguläre Migration zu steuern. Die Instrumente sollen somit auf eine mögliche Wirksamkeit hin analysiert werden. Zur Beantwortung der Frage werden im ersten Teil Grundlagen irregulärer Migration behandelt. Diese bilden die Basis der Analyse. Im zweiten Teil werden die politischen Steuerungsinstrumente auf drei Ebenen untersucht. Dabei handelt es sich um die globale, regionale und nationalstaatliche Ebene. Zum Großteil sind die behandelten Steuerungsinstrumente im Bereich der Migrationspolitik anzusiedeln – wobei andere Politikbereiche, insbesondere die Außen- Wirtschafts- und Handelspolitik ebenso von hoher Bedeutung sind. Ansätze dieser Politikbereiche können jedoch aufgrund des begrenzten Rahmens dieser Arbeit nicht in Betracht gezogen werden. In einem abschließenden Teil werden die Ergebnisse der Analyse zusammengefasst und die der Arbeit zugrunde liegende Fragestellung beantwortet.
This paper summarises the state of two research phases within the scope of the IEA Task 40 / Annex 52 "Towards Net Zero Energy Solar Buildings" [1]. The first objective is a cross section analysis of a comprehensive collection of more than 280 international zero energy buildings. The aim is to show trends, motives of actors, as well as their method to reach the zero energy balance. Secondly, an in-depth study shows a rough analysis and characteristics of 50 exemplary Nets ZEBs from different countries and climate regions, as well as their combinations of measures concerning energy efficiency and renewable energy supply.
It is shown that diverse actors with miscellaneous motives have lead to a lot of different building variations. Typical strategies can be assigned to the typology groups "small residential building", "apartment building" and "non residential building". Net ZEBs are much more energy efficient than average buildings which were built according to national construction and energy regulations. None of the leading Net ZEB examples exist without generation of PV electricity. Trends give an outlook of current and possible future combinations of technologies and passive measures for the realization of (future) net zero energy buildings.
The international cooperation project IEA SHC Task 40 / ECBCS Annex 52 “Towards Net Zero Energy Solar Buildings”, attempts to develop a common understanding and to set up the basis for an international definition framework of Net Zero Energy Buildings (Net ZEBs). Th e understanding of such buildings and how the Net ZEB status should be calculated differs in most countries. This paper presents an overview of Net ZEBs energy calculation methodologies proposed by organisations representing eight different countries: Austria, Canada, Denmark, Germany, Italy, Norway, Switzerland and the USA. The different parameters used in the calculations are discussed and the various renewable supply options considered in the methodologies are summarised graphically. Thus, the paper helps to understand different existing approaches to calculate energy balance in Net ZEBs, highlights the importance of variables selection and identify possible renewable energy supply options which may be considered in calculations. Finally, the gap between the methodology proposed by each organisation and their respective national building code is assessed; providing an overview of the possible changes building codes will need to undergo in the coming years.
Based on the dimensions of state interference proposed by Blumler and Gurevitch (1995), this paper follows their approach from an economic perspective. Therefore three alternative ways to provide broadcasting goods (the market, the state and the voluntary sector) are introduced. Next a historical overview of the German public service broadcasting is provided. Main legal provi- sions are described in theoretical remarks with focus on constitution of supervisory bodies of pub- lic service broadcasters. Ways and cases of political interventions are discussed there. The funding of public service broadcasters is depicted. Some recent developments are presented, related to the so-called “three step test” for new or changed online offerings of public service broadcasters. The German public service broadcasting sector is evaluated and visualized by means of the para- digm. Although different possibilities of state influence exist, German public service broadcasting can be characterized all in all as rather state-distant. New challenges arise, however, from the trans- formation process in public service media.