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  1. Article: 3 Fragen an Andreas Fritz vom Eichamt

    Fritz, Andreas

    Rebe & Wein

    2015  Volume 68, Issue 11, Page(s) 7

    Language German
    Document type Article
    ZDB-ID 2379773-3
    ISSN 0034-1118
    Database Current Contents Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Z 2633: Show issues

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  2. Book ; Thesis: Einfluß von Lactulose auf die gastrointestinale Transitzeit unter Normalbedingungen und bei loperamidinduzierter Obstipation

    Klump, Michael Fritz Andreas

    Untersuchung mit dem Metalldetektorverfahren

    1994  

    Author's details vorgelegt von Michael Fritz Andreas Klump
    Language German
    Size 67, [33] Bl. : graph. Darst.
    Edition [Mikrofiche-Ausg.]
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Mainz, Univ., Diss., 1994
    Note Mikrofiche-Ausg.: 2 Mikrofiches : 24x
    HBZ-ID HT006562228
    Database Catalogue ZB MED Medicine, Health

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    In stock of ZB MED Cologne/Königswinter

    Shelf markLoan statusLocation
    1995 MB 696 order for loan Magazin

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  3. Book ; Online: European electricity and interrelated futures markets

    Fritz, Andreas

    a cointegrated vector autoregressive analysis

    (EWL Working Paper ; 05/12)

    2012  

    Abstract: This study investigates the price formation of electricity futures at the European Energy Exchange (EEX) and aims at understanding the price formation in connection with interrelated futures markets such as ARA coal at the Intercontinental Exchange (ICE), ...

    Author's details by Andreas Fritz
    Series title EWL Working Paper ; 05/12
    Abstract This study investigates the price formation of electricity futures at the European Energy Exchange (EEX) and aims at understanding the price formation in connection with interrelated futures markets such as ARA coal at the Intercontinental Exchange (ICE), natural gas at the Title Transfer Exchange (TTF) and CO2 allowances. Results obtained from using a vector error correction model suggest that price formation in the futures markets for electricity can be explained to some extent fundamentally. Electricity futures price dynamics show dependency on marginal generation costs. A stable long-term equilibrium between electricity futures prices and marginal costs, namely prices of hard coal, natural gas and CO2 allowances could be found. An impulse response analysis reveals that in the longer run the electricity futures price converge to marginal costs of a hard coal power plant. This is useful information for electric utilities and regulatory bodies since futures markets serve several purposes for energy utilities, including price discovery, hedging, valuation and trading.
    Keywords Energy ; Cointegration ; Electricity Market ; Futures Market
    Language English
    Size Online-Ressource ([1], 19 S.), graph. Darst.
    Publisher University of Duisburg-Essen, Chair for Management Science and Energy Economics
    Publishing place Essen
    Document type Book ; Online
    Database ECONomics Information System

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  4. Book ; Online: BioDisc: Deutsch-israelische Genomanalyse nicht-translatierter Gene

    Fritz, Andreas

    Schlussbericht ; Berichtszeitraum: 01.02.2006-31.07.2006

    2007  

    Institution Biomax Informatics AG
    Author's details Institution: Biomax Informatics AG. Projektleitung: Andreas Fritz
    Language German
    Size Online-Ressource (25 S., 1,44 MB), graph. Darst.
    Publisher Technische Informationsbibliothek u. Universitätsbibliothek
    Publishing place Hannover ; Martinsried
    Document type Book ; Online
    Note Förderkennzeichen BMBF 0313424. - Verbund-Nr. 01038326 ; Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  5. Book: BioDisc: Deutsch-israelische Genomanalyse nicht-translatierter Gene

    Fritz, Andreas

    Schlussbericht ; Berichtszeitraum: 01.02.2006-31.07.2006

    2007  

    Institution Biomax Informatics AG
    Author's details Institution: Biomax Informatics AG. Projektleitung: Andreas Fritz
    Language German
    Size 23 Bl., graph. Darst.
    Publishing place Martinsried
    Document type Book
    Note Förderkennzeichen BMBF 0313424. - Verbund-Nr. 01038326 ; Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  6. Article: Combining Satellite and UAV Imagery to Delineate Forest Cover and Basal Area after Mixed-Severity Fires

    Rossi, Fernando C / Becker, Gero / Fritz, Andreas

    Sustainability. 2018 June 28, v. 10, no. 7

    2018  

    Abstract: In northern Argentina, the assessment of degraded forests is a big challenge for both science and practice, due to their heterogeneous structure. However, new technologies could contribute to mapping post-disturbance canopy cover and basal area in detail. ...

    Abstract In northern Argentina, the assessment of degraded forests is a big challenge for both science and practice, due to their heterogeneous structure. However, new technologies could contribute to mapping post-disturbance canopy cover and basal area in detail. Therefore, this research assesses whether or not the inclusion of partial cover unmanned aerial vehicle imagery could reduce the classification error of a SPOT6 image used in an area-based inventory. BA was calculated from 77 ground inventory plots over 3944 ha of a forest affected by mixed-severity fires in the Argentinian Yungas. In total, 74% of the area was covered with UAV flights, and canopy height models were calculated to estimate partial canopy cover at three tree height classes. Basal area and partial canopy cover were used to formulate the adjusted canopy cover index, and it was calculated for 70 ground plots and an additional 20 image plots. Four classes of fire severity were created based on basal area and adjusted canopy cover index, and were used to run two supervised classifications over a segmented (algorithm multiresolution) wall-to-wall SPOT6 image. The comparison of the Cohan’s Kappa coefficient of both classifications shows that they are not significantly different (p-value: 0.43). However, the approach based on the adjusted canopy cover index achieved more homogeneous strata (Welch t-test with 95% of confidence). Additionally, UAV-derived canopy height model estimates of tree height were compared with field measurements of 71 alive trees. The canopy height models underestimated tree height with an RMSE ranging from 2.8 to 8.3 m. The best accuracy of the canopy height model was achieved using a larger pixel size (10 m), and for lower stocked plots due to high fire severity.
    Keywords algorithms ; canopy ; canopy height ; fire severity ; fires ; forest damage ; forest inventory ; forests ; models ; remote sensing ; satellites ; tree height ; trees ; t-test ; unmanned aerial vehicles ; Andes region ; Argentina
    Language English
    Dates of publication 2018-0628
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2518383-7
    ISSN 2071-1050
    ISSN 2071-1050
    DOI 10.3390/su10072227
    Database NAL-Catalogue (AGRICOLA)

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  7. Book ; Online: Das Akkreditierungssystem an deutschen Universitäten

    Fritz, Andreas

    Qualität sichern, Vielfalt fördern, Transparenz schaffen, Vergleichbarkeit erreichen!?

    2011  

    Abstract: Hauptbeschreibung: Wird das deutsche Akkreditierungswesen den selbstgesteckten Zielen heute schon gerecht? Andreas Fritz zieht nach einem Jahrzehnt "Bologna-Prozess" eine fundierte Zwischenbilanz hinsichtlich der Studiengangakkreditierung an deutschen ... ...

    Abstract Hauptbeschreibung: Wird das deutsche Akkreditierungswesen den selbstgesteckten Zielen heute schon gerecht? Andreas Fritz zieht nach einem Jahrzehnt "Bologna-Prozess" eine fundierte Zwischenbilanz hinsichtlich der Studiengangakkreditierung an deutschen Universitäten und gibt einen breit gefächerten, aber dennoch komprimierten Überblick über das deutsche Akkreditierungssystem im Hochschulbereich. Dazu zeichnet er den universitätsgeschichtlichen Weg des Qualitätsbeurteilungswesens nach, skizziert die Implementierung des deutschen Akkreditierungssystems überblicksartig und deutet ihre bereits weit f
    Language German
    Size Online-Ressource (232 p.)
    Publisher Tectum Verlag
    Publishing place Marburg
    Document type Book ; Online
    Note Description based upon print version of record
    ISBN 9783828822429 ; 3828822428
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  8. Book: Technisches Zeichnen

    Fritz, Andreas / Hoischen, Hans / Hoischen-Fritz

    Grundlagen, Normen, Beispiele, darstellende Geometrie ; Lehr-, Übungs- und Nachschlagewerk für Schule, Fortbildung, Studium und Praxis, mit mehr als 100 Tabellen und weit über 1.000 Zeichnungen

    2014  

    Author's details begr. von Hans Hoischen. Hrsg. von Andreas Fritz
    Keywords Technisches Zeichnen
    Language German
    Size 512 S., Ill., zahlr. graph. Darst., 18 cm
    Edition 34., überarb., und erw. Aufl.
    Publisher Cornelsen
    Publishing place Berlin
    Document type Book
    Note Hier auch später erschienene, unveränd. Nachdr.
    ISBN 3061510338 ; 9783061510336
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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  9. Article: Rewilding cultural landscape potentially puts both avian diversity and endemism at risk: A Tibetan Plateau case study

    Li, Li / Tietze, Dieter Thomas / Fritz, Andreas / Lü, Zhi / Bürgi, Matthias / Storch, Ilse

    Biological conservation. 2018 Aug., v. 224

    2018  

    Abstract: Ecological restoration is becoming a primary strategy to increase provisions of ecosystem services and reverse biodiversity losses. In cultural landscapes undergoing land use extensification, rewilding has been proposed as a viable approach to reverse ... ...

    Abstract Ecological restoration is becoming a primary strategy to increase provisions of ecosystem services and reverse biodiversity losses. In cultural landscapes undergoing land use extensification, rewilding has been proposed as a viable approach to reverse biodiversity loss through reducing human impacts. The world's largest ecological restoration campaign is taking place on the eastern Qinghai-Tibetan Plateau (QTP) to combat grassland degradation and enhance the upper stream region's water retention capacity. However, little is known about whether the large-scale rewilding also benefits the unique bird assemblage of the eastern QTP. Our study aims to make science-based conservation recommendations for the Tibetan avifauna by detecting their diversity and endemism distribution patterns at the local scale. In the breeding seasons of 2014 and 2015, we carried out bird surveys and conducted a habitat mapping using three Unmanned Aerial Vehicles (UAVs). We developed a comprehensive set of 2D and 3D habitat feature parameters from the high-resolution (10 cm level) UAV-derived images. Meanwhile, we employed the participatory GIS approach to acquire farm-scale human land-use data. Our results indicate that the distributions of avian diversity, endemism and abundance are not congruent across the eastern QTP, which calls for the conservation of different habitat types. Vertical and horizontal habitat heterogeneity maintain the local bird diversity with anthropogenic elements significantly enriching the overall bird abundance. Degraded pastures provided key habitats for two highly abundant endemic passerines—the White-rumped Snowfinch Onychostruthus taczanowskii and the Ground Tit Pseudopodoces humilis. At the landscape scale, historical human-nature interactions between Tibetan nomads and the alpine environment formed the landscape's patchy vegetation structure. Our results reveal that the Tibetan cultural landscape maintains the structural heterogeneity needed to achieve multiple bird conservation objectives on the eastern QTP. Restoring the cultural landscape to a ‘natural’ tall-grass or dense-shrubland state of high water-retention capacity may result in the loss of both high-abundance avian communities and endemic species diversity. Our empirical study also indicated that rewilding abandoned agricultural landscape will not necessarily lead to a desired conservation outcome, especially when the requirements of habitat specialists and endemics are not taken into account. Moreover, ecological restoration projects should evaluate the divergences between their ecosystem service and biodiversity objectives.
    Keywords Pseudopodoces humilis ; anthropogenic activities ; avifauna ; birds ; breeding season ; case studies ; cultural landscape ; ecological restoration ; ecosystem services ; geographic information systems ; grasslands ; habitats ; humans ; indigenous species ; land use ; natural resources conservation ; pastures ; risk ; species diversity ; streams ; surveys ; vegetation structure ; water holding capacity ; China
    Language English
    Dates of publication 2018-08
    Size p. 75-86.
    Publishing place Elsevier Ltd
    Document type Article
    ISSN 0006-3207
    DOI 10.1016/j.biocon.2018.05.008
    Database NAL-Catalogue (AGRICOLA)

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  10. Book ; Online: The role of heterogeneous agents in fuel markets

    Fritz, Andreas / Stein, Michael / Weber, Christoph

    testing tales of speculators in oil markets

    (EWL Working Paper ; 05/15)

    2015  

    Abstract: This study investigates the role of heterogeneous agents in oil markets and tests tales of speculators in oil price formation. Results obtained from using a non-linear heterogeneous agent model suggest that oil market prices are driven by different ... ...

    Author's details by Andreas Fritz; Michael Stein; Christoph Weber
    Series title EWL Working Paper ; 05/15
    Abstract This study investigates the role of heterogeneous agents in oil markets and tests tales of speculators in oil price formation. Results obtained from using a non-linear heterogeneous agent model suggest that oil market prices are driven by different groups of speculators, namely fundamentalists, chartists and the newly introduced contrarians. The latter enable us to disentangle stabilizing effects previously attributed solely to fundamentalists, and they are on average the most dominating group, whereas chartists exacerbate the huge price swings in 1990, 2008 and 2011. We also show how sensitive the model outcomes are to the specification of the fundamental value, what has strong economic implications.
    Keywords Energy
    Language Undetermined
    Size Online-Ressource ([1], 23 S.), graph. Darst.
    Publisher University of Duisburg-Essen, Chair for Management Science and Energy Economics
    Publishing place Essen
    Document type Book ; Online
    Database ECONomics Information System

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