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Auflistung nach Autor:in "Schebek, Liselotte"

1 - 4 von 4
  • Konferenzbeitrag
    Analysing land-use effects on the carbon balance of biofuels by coupling a spatial model to LCA
    (Innovations in Sharing Environmental Observations and Information, 2011) Humpenöder, Florian; Schaldach, Rüdiger; Shayeghi, Yalda; Schebek, Liselotte
    Biofuels are considered as an important option for the mitigation of climate change. However, the negative impact of land-use change on soil and vegetation carbon pools may jeopardize the potentially achievable savings of greenhouse gas (GHG) emissions. In order to access the impact of land-use change on the carbon balance of biofuels, we couple a spatial model, in combination with Geographic Information System (GIS) software, to a Life Cycle Assessment (LCA) of biofuels. The results for our study area, the European Union (EU), show that land-use change has a major impact on the GHG performance of biofuels. Based on our findings we conclude that biofuel use is not an adequate measure for the mitigation of global warming.
  • Konferenzbeitrag
    Comparative evaluation of life cycle assessment software programs: a case study for biodiesel and diesel fuel
    (Innovations in Sharing Environmental Observations and Information, 2011) Sallaberry, Rogério Rodrigues; Nunes, Katia; Cybis, Luiz Fernando; Schebek, Liselotte
    Life Cycle Assessment (LCA) software programs are presumably to support users to facilitate the complex work of compiling an inventory and assessing impacts. However, not all computer programs provide tools to support the interpretation phase. This phase is the final of a LCA study, which should be conclusions and recommendations, especially when a third-party report from comparative studies is made, or when a weak-point analysis is aimed at. The objective of this paper is to verify the feasibility of performing the three main quality checks – completeness, sensitivity and consistency – to elaborate the conclusions and recommendations. A comparison was made among three software programs employing LCAs between Brazilian sunflower biodiesel and diesel fuel, as case study. The expectation in relation to the evaluation of the three software programs was not completely attended. In spite of the fact that is possible to access and to view most necessary data to carry out the checks, the use of software program do not exclude further data process and the expert’s critic point of view.
  • Konferenzbeitrag
    Key IT-results of the BioEnergieDat Project
    (Proceedings of the 27th Conference on Environmental Informatics - Informatics for Environmental Protection, Sustainable Development and Risk Management, 2013) Düpmeier, Clemens; Schebek, Liselotte; Ciroth, Andreas; Kusche, Oliver
    The BioEnergieDat project had been carried out by a consortium of German research organizations for the German Ministry of Environment as one important part of the German Sustainable Biomass Strategy. The main goals of the project were the development of a comprehensive database of LCI data sets describing important Bioenergy process chains in a flexible and customizable way and the development of an associated open source software infrastructure for LCA modelling of Bioenergy technologies for German framework conditions. One of the main requirements of the project was that the provided data sets can be used in different LCA modelling situations and shouldn t restrict users to only one usage context, i.e. performing only a certain type of LCA study. Therefore, new methodological approaches and enhancements to the underlying data set model / format had also to be developed and implemented to fulfil these requirements. Both, the tool environment developed in BioEnergieDat for LCA modelling of bioenergy technologies and key IT-aspects to support the new modelling approaches are described in further detail.
  • Konferenzbeitrag
    The German Network on Life Cycle Inventory Data – Using Modern Techniques for Web Portals to Meet the Requirements of an Environmental Network
    (Managing Environmental Knowledge, 2006) Stadtherr, Achim; Düpmeier, Clemens; Bauer, Christian; Schebek, Liselotte
    The Network on Life Cycle Inventory Data is the information and communication platform for all groups and persons interested in life cycle analyses in Germany. Life cycle inventory (LCI) data is a prerequisite for life cycle assessments and other methods in the area of life cycle analyses instruments that are increasingly used in industry and environmental policy. In line with the concept and structure of the network there are three main objectives to be met by a communication infrastructure: firstly, it has to be a platform to enhance the scientific fundamentals of life cycle analyses in a dialogue with science and users, secondly, it has to be a working platform for the science corporation and, thirdly, an architecture to integrate a self-supporting infrastructure for supply of LCI data. These objectives result in a communication infrastructure based on a web portal as front end, a content management system, a user management system via LDAP, and groupware functionalities as well as in an LCI data supply management system with a relational database technology behind. The content management and portal server framework selected is based on broadly used and accepted Java technology. It will be able to support the currently developed final organisation structure of the network, consisting of independent bodies: a development Association, LC Validate and LC Data. This paper reveals the elements of a communication infrastructure for the Network on Life Cycle Inventory Data and their contribution to the objectives of the organization. It is shown that the use of modern techniques for web portals enables the computer scientist to meet the requirements of an environmental network, while still efforts have to be made to realize the interoperability between relevant components.