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Auflistung nach Autor:in "Rautenstrauch, Claus"

1 - 10 von 56
  • Konferenzbeitrag
    A Case Study on an Automated Generation of Environmental Reports
    (The Information Society and Enlargement of the European Union, 2003) Marx-Gómez, Jorge; Rautenstrauch, Claus; Isenmann, Ralf
    Die unterschiedlichen Dokumente, die im Rahmen einer Umweltberichterstattung von Unternehmen erstellt werden, basieren auf ähnlichen und teilweise überlappenden Informationen. Oft können die für ein bestimmtes Umweltdokument zusammengetragenen Informationen allerdings nicht oder nur mit großem Aufwand für andere Zielsetzungen wieder genutzt werden. Die in den Dokumenten enthaltenen Umweltdaten müssen regelmäßig (z. B. entsprechend dem Berichtszeitraum) aktualisiert werden. Eine rechnergestützte und zumindest teilweise automatisierte Berichterstattung erscheint daher sinnvoll. In diesem Beitrag wird ein Ansatz zur teilweise automatisierten Umweltberichterstattung vorgestellt. Der Schwerpunkt liegt hierbei in der automatischen Überführung von Ökobilanzdaten in eine XML-Form und der Integration in einen Umweltbericht. Dies wird am Beispiel des Softwaretools Umberto illustriert.
  • Konferenzbeitrag
    A Comparative Eco-balance for Coating Materials with Epoxidised Derivatives
    (Environmental Communication in the Information Society - Proceedings of the 16th Conference, 2002) Khatib, Chaouki; Marx-Gómez, Jorge; Prötzsch, Silke; Rautenstrauch, Claus
    The scope of the presented project was to illuminate and describe the potential environmental impacts which are caused by the production and application of a coating material using epoxidised derivatives. Therefore an appropriate comparative eco-balance in collaboration with the company BIOMEL GmbH located in Dessau (Germany) shall be conducted. Problem definition, approach and results will be given.
  • Konferenzbeitrag
    A Decision Support System for Ranking Countermeasures for Radionuclide Contaminated Aquatic Ecosystems: The MOIRA project
    (Umweltinformatik ’99 - Umweltinformatik zwischen Theorie und Industrieanwendung, 1999) Ríos-Insua, Sixto; Gallego, Eduardo; Mateos, Alfonso; Jiménez, Antonio
    This paper describes the evaluation module in the MOIRA system, which is a decision support system based on a multi-attribute additive value model, aim at the identification of optimal remedial strategies restoration of aquatic ecosystems contaminated by radionuclides. It includes facilities for assessing imprecise scalar utility functions and scaling factors, as well as a sensitivity analysis tool to check the sensitivity of the conclusions to the inputs, to allow the decision makers to gain insights into the problem. An example based on real data illustrates the usefulness of the system.
  • Konferenzbeitrag
    A Knowledgebase system approach — Integrated Assessment of Mechanised Harvesting Operation on Forest Environment
    (Umweltinformatik ’99 - Umweltinformatik zwischen Theorie und Industrieanwendung, 1999) Zhangren, Lan
    Due to rapidly increasing mechanised timber harvesting operation in commercial forest, new and increasing pressures are being brought to bear on environment issues. Estimating the environmental risk of timber harvesting operations plays an important role in selecting suitable machines of harvesting system on wood procurement chain in environmental-oriented procedure. It is obvious that main impacts of harvesting operations concentrate on the soil compaction, site disturbances and biological damage. From the view point of pre-operational damage risk evaluation, the relevance of soil compaction and other consequences derived from harvesting operation is not directly from the results of associated changes of the soil properties but rather from the environmental and technical parameters of harvesting machine which are defined in the methods of harvesting with specific operational modes and type of machine. In this paper, a knowledge-base system (KBS) approach in co-operation with a fuzzy integrated assessment was developed for pre-operational evaluation of timber harvesting activities. The critical factors concerning the damage risk of harvesting operations to forest target area were extracted, evaluated, weighted and encoded into the knowledge-base system based on topographical conditions of forest area, machine parameters, harvesting system types and so on concerning harvesting operation as following: • Ground slopes and slope capacity of machine: ground slope is one of the critical factors that identify the operability of individual machine and harvesting system in a give condition. The slope capacity of machine to some extent means for machine to be operated efficiently at the productivity, cost, and less impacts of operations. • Soil condition and ground strength: the soil characteristic is a main factor for defining the trafficability of the machine and risk of various damages to the soil at the time of traffic. Generally, ground conditions worsen, wider range of machine traffic capacity should be taken into consideration for the choice of machines and their equipment. • Logging patterns and machine size: machine size to a large extent identifies the ground pressure of machine and risks of various damages to the soil and remaining trees in thinning operation. Defining the parameters of machine size could induce the extent of environmental consequence dominating concerns of damage to soil and remaining trees in given logging pattern. • Harvesting method and machine types: three types of harvesting system, i.e. cut-to-length, tree-length, and whole tree system corresponding to harvesting methods and machines applied determine the types and extent of environmental consequences, which are indicated by the machine performance varying with the logging patterns from thinning to final cutting. • Machine productivity and operating cost: there might be some extent of conflict among the machine productivity, costs effectiveness and forest damage risk. Machine to be operated in the most-efficient way implies larger machine employed and less restricted impact of harvesting operation. There might be a compromise required between maximising financial benefit and minimising site damage. • Operational modes: harvesting and forwarding with the crane work operated at wider spacing cause much of damage to trees; direct dragging and winching are often more dangerous for the standing trees; skidding and feller-bunching will disturb more area, incurring more damage risk to stands. • Ground pressure of harvesting machine: maximum site protection would require low ground pressure. Machinery with low ground pressure could greatly reduce the extent of damage to the forest floor. • Tyre types and tracks: the extensive disturbance indicated with the rut depth depends strongly upon the types, size and inflation pressure of tyres besides the ground pressure of machine. Wider tyres or tracks facilitate efficiently to reduce soil damage and rut depth. The values of those variables concerning forest machine performance and environmental parameters are converted into a scaling system in numerical way. Fuzzy method involved in pre-operational evaluation of timber harvesting is employed to integrating assessment and analysis based on critical factors and machine performance level indicated with index method of harvesting operation. The purpose of KBS is to provide the knowledge that can evaluate environmental issues, and interpret its generated output. In the case of the machine pre-operational assessment, potential risk of harvesting operations is primary goal to be specified through the inference engine of knowledge-base system. Further more, the management objective of timber harvesting operations will be reached by examining rules and executing special 483 search, which then provided the recommendations for suitable choice of sound environmental harvesting machines. The window-based application of pre-operational evaluation system was built with Borland Delphi development tool. Friendly user interface environment is suitable for users to control data input and output. The output data could be extended to various kinds of timber harvesting planning and management of environment-oriented procedure at company level.
  • Konferenzbeitrag
    A New Approach to Solve Data Defects in Material Flow Networks
    (Informatics for Environmental Protection - Networking Environmental Information, 2005) Arco, Leticia; Bonet, Isis; García, Lourdes; Marx Gómez, Jorge; Rautenstrauch, Claus
    Eco-balances are the basis for assessing production impacts on environment and creation of environmental reports. Creation of an eco-balance is supported by the software tool Umberto®. In Umberto material and energy flows, required for the production of inventory analysis, will be designed by means of material flow networks. This tool allows modelling the material flow networks using Petri Nets. During the creation and evaluation of material flow networks there appear some defects, which inhibit or make it more difficult to establish realistic statements towards environmental impacts. Therefore, in the following paper the defects in material flow networks will be discussed in detail. The classification of defects is followed by the analysis of defect causes and possible solution attempts to their removal will be presented. We propose a new solution attempt using Petri Nets, Neural Networks and Case Based Reasoning in order to solve missing data process and incorrect data in material flow networks.
  • Konferenzbeitrag
    Approaches to Remove Data Defects from Material Flow Networks
    (The Information Society and Enlargement of the European Union, 2003) Prötzsch, Silke; Rautenstrauch, Claus
    The scope of the paper is to present approaches to remove data defects from material flow networks. In the software tool Umberto® material flow networks are used to model material flows as part of preparation of eco-balances. Reliable statements about environmental impacts of a product are only possible, if all material and energy flows on the whole life cycle of the considered product are included. On that score data defects in material flow networks will be defined and some solution attempts to remove the defects will be discussed. Finally a short outlook will outline some other approaches, which should be investigated in future work.
  • Konferenzbeitrag
    AUDIS: Informations und Managementsystem für den betrieblichen Arbeits und Umweltschutz
    (Umweltinformatik ’99 - Umweltinformatik zwischen Theorie und Industrieanwendung, 1999) Hagel, Harald; Chudalla, Andreas
  • Zeitschriftenartikel
    Betriebliche Umweltinformationssysteme (BUIS) – eine Literaturanalyse
    (Informatik-Spektrum: Vol. 20, No. 3, 1997) Hilty, Lorenz M.; Rautenstrauch, Claus
  • Konferenzbeitrag
    Betriebswirtschaftliche Bewertung eines betrieblichen Umweltinformationssystems zur industriellen Abfallbewirtschaftung in Theorie und Praxis
    (Umweltinformatik ’99 - Umweltinformatik zwischen Theorie und Industrieanwendung, 1999) Blümel, Christian; Gamweger, Jürgen
  • Konferenzbeitrag
    BUIS der 2. Generation von funktionalen Lösungen zur Prozessintegration
    (Umweltinformatik ’99 - Umweltinformatik zwischen Theorie und Industrieanwendung, 1999) Kürzl, Hans