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  • 2000-2004  (282)
Collection
Keywords
Publisher
Years
Year
  • 1
    GFZ publications
    GFZ publications
    Wissenschaftliche Begleitung der PRIRODA Mission des MOMS-2P auf der MIR-Station unter dem Gesichtspunkt der thematischen Anwendung : Endbericht zum Vorhaben FKZ 50 EE 9514, MOMS-02P, BMBF-DLR (2000)
    Potsdam : GeoForschungsZentrum
    Associated volumes
    Details Availability
    Call number: 21/STR 00/03
    In: Scientific technical report
    Type of Medium: GFZ publications
    Pages: 144 S.
    Series Statement: Scientific Technical Report / Geoforschungszentrum Potsdam 00/03
    Classification:
    Photogrammetry, Remote Sensing
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Serviceflow Management (2000)
    Springer
    Informatik-Spektrum 23 (2000), S. 38-46 
    Details
    ISSN: 1432-122X
    Keywords: Serviceflow, ¶Workflow-Management, Groupware, CSCW
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Der Artikel stellt den Begriff Serviceflow-Management zur Diskussion und analysiert die über Workflow-Management hinausgehenden neuen Herausforderungen an eine angemessene IT-Unterstützung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002870050006
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  • 3
    Electronic Resource
    Electronic Resource
    Analyzing and realigning organizational culture (2001)
    Bingley : Emerald
    Leadership & organization development journal 22 (2001), S. 40-44 
    Details
    ISSN: 0143-7739
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Presents a process developed by the authors that can be used to help organizational leaders and change agents make alignments between their "espoused" and "existing" organizational cultures. First we present an overview of the theoretical model from which the process is derived, and how we attempt to translate the theory into personal mental models for those involved in the change process. Next, we describe an action-oriented process we call "walkies and talkies" used for analyzing what Schein refers to as artifacts and espoused values. Finally, we present a range of change initiatives that may be used if the culture analysis reveals any misalignments - "tune-ups" are actions that can be taken during the analysis or immediately thereafter. "Re-builds" are intermediate actions that take one to six months to complete. "Replacements" are longer-term interventions requiring significant investments of time and resources, and represent change at its deepest level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/01437730110380219
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  • 4
    Electronic Resource
    Electronic Resource
    Microstructure and tribological behavior of polymeric nanocomposites (2001)
    Bradford : Emerald
    Industrial lubrication & tribology 53 (2001), S. 72-77 
    Details
    ISSN: 0036-8792
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Nanocomposites represent a new prospective branch in the huge field of polymer materials science and technology. It has been shown that an overall enhancement of properties of polymers can be achieved under certain conditions by the addition of nanoparticles. To examine the influence of microstructure on the tribological performance of nanocomposites, different ways of compounding were used in this study. It was found that the friction and wear behavior of polymeric nanocomposites under sliding environment was rather sensitive to the dispersion states of the nanoparticles. When the microstructural homogeneity of the nanocomposites was improved, their wear resistance could be increased significantly. The present work demonstrates the importance of TiO2-nanoparticles dispersion in an epoxy resin matrix, on the materials' tribological properties, when sliding against a smooth steel counterpart.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/00368790110383993
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  • 5
    Electronic Resource
    Electronic Resource
    Serviceflow management for health provider networks (2003)
    Bradford : Emerald
    Logistics information management 16 (2003), S. 259-269 
    Details
    ISSN: 0957-6053
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: Exploding expenditure in health care has led to new reimbursement regulations forcing health care providers to conduct their organisations as business concerns. In order to be competitive providers have started to build networks that allow the delivery of interrelated health services in a well-adjusted and uniform manner. However, besides strategic agreement, successful networking requires the support of information systems for efficient cooperation and process management in order to deliver efficient day to day service. With serviceflow management we provide a general concept that answers these needs. Based on modelling process patterns and the exchange of XML-representations of process knowledge and data between service providers, serviceflow management supports organisations in jointly delivering services that cross provider boundaries. Furthermore, it enables flexible handling of processes, which is indispensable in health care. Based on a health care example, we explore the possibilities of serviceflow management and present a Web-based prototype on the basis of our generic, four-layered architecture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09576050310483844
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  • 6
    Electronic Resource
    Electronic Resource
    Using of EM fields during industrial CZ and FZ large silicon crystal growth (2003)
    Bradford : Emerald
    Compel 22 (2003), S. 123-133 
    Details
    ISSN: 0332-1649
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: The paper describes numerical simulation tools for electromagnetic (EM), hydrodynamic, temperature and concentration fields in industrial Czochralski (CZ) and floating zone (FZ) single silicon crystal growth facilities under the influence of several alternating current (AC) and static DC magnetic fields. Such fields are expected to provide additional means to influence the melt behaviour, especially in the industrial growth of large diameter (200–300?mm) silicon crystals. The simulation tools are based on axisymmetric 2D models for (1) AC and DC magnetic fields in the whole crystal growth facility and (2) hydrodynamics, temperature and mass transport in the melt under the influence of the EM fields. The simulation tools are verified by comparison to temperature and velocity measurements in a laboratory CZ set-up with eutectics InGaSn model melt and to resistivity measurements in grown silicon crystals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03321640310452222
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  • 7
    Electronic Resource
    Electronic Resource
    Mathematical modelling of the industrial growth of large silicon crystals by CZ and FZ process (2003)
    Bradford : Emerald
    Compel 22 (2003), S. 158-169 
    Details
    ISSN: 0332-1649
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Electrical Engineering, Measurement and Control Technology , Mathematics
    Notes: The present paper gives an overview of the complex mathematical modelling of industrial Czochralski (CZ) and floating-zone (FZ) processes for the growth of large silicon single crystals from melt. Extensive numerical investigations of turbulent Si-melt flows in large diameter CZ crucibles, global thermal calculations in growth facilities and analysis of the influence of various electromagnetic fields on CZ process are presented. For FZ process, a complex system of coupled 2D and 3D mathematical models is presented to show the possibilities of modelling from the calculation of the molten zone shape till the resistivity distribution in the grown crystal. A special developed program code is presented that is used to calculate the temperature field in the crystal including radiation exchange with reflectors, stress field due to thermal expansion and shape of the dislocated zone in the case of dislocation generation. Besides the macroscopic modelling of crystal growth processes, the crystallisation model on the atomistic level in the mean field approximation is also presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/03321640310452259
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  • 8
    Electronic Resource
    Electronic Resource
    Anomalies and Unusual Patterns in Reported Earnings: Japanese Managers Round Earnings (2004)
    Oxford, UK and Boston, USA : Blackwell Publishing Ltd.
    Journal of international financial management & accounting 15 (2004), S. 0 
    Details
    ISSN: 1467-646X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: Using Benford's law, this study documents pervasive evidence that managers of Japanese firms tend to engage in earnings manipulative activities of rounding earnings numbers to achieve key reference points. Similar to Carslaw (1988) and Thomas (1989), we find that the first digit of earnings numbers is often emphasized by the management. We also find that key reference points are not limited to the first digit. The second, third, or even fourth digits are sometimes used as the reference points of the rounding earnings behavior. Finally, our results show that the incentives of rounding earnings numbers are negatively associated with the distance of pre-rounded earnings to the next reference point.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-646X.2004.00108.x
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  • 9
    Electronic Resource
    Electronic Resource
    Nutritional quality of leaf detritus altered by elevated atmospheric CO2: effects on development of mosquito larvae (2003)
    Oxford, UK : Blackwell Science Ltd
    Freshwater biology 48 (2003), S. 0 
    Details
    ISSN: 1365-2427
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: 1. Populus tremuloides leaf litter was produced under elevated (ELEV = 720 ppm) and ambient (AMB = 360 ppm) atmospheric CO2 conditions. Leaf chemical quality was significantly altered by CO2 enrichment. ELEV leaves had significantly higher concentrations of phenolic compounds and lignins, and higher C : N ratios than AMB.2. Leaf litter was incubated in a headwater stream for 14 days to become colonised by microorganisms; aquatic bacterial productivity was significantly lower on ELEV than on AMB leaf litter. Colonised leaves were fed to four species of detritivorous mosquito larvae to assess their survivorship and development rates.3. Larval mortality was 2.2 times higher for Aedes albopictus fed ELEV litter when compared with AMB. Although mortality of A. triseriatus, A. aegypti and Armigeres subalbatus was not affected by treatment, larval development rate was delayed by 78, 25 and 27%, respectively, when fed ELEV litter.4. Increased mosquito mortality and/or delayed larval development rates are more likely to have negative implications for food web structure and productivity in ecosystems where immature stages of mosquitoes are an important food source of predators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2427.2003.01102.x
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  • 10
    Electronic Resource
    Electronic Resource
    Elevated atmospheric CO2 lowers leaf litter nutritional quality for stream ecosystem food webs (2002)
    Oxford, UK : Blackwell Science Ltd
    Global change biology 8 (2002), S. 0 
    Details
    ISSN: 1365-2486
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Energy, Environment Protection, Nuclear Power Engineering , Geography
    Notes: Up to 99% of the carbon fuelling the food webs of temperate woodland streams is derived from inputs of terrestrial leaf litter. Aquatic bacteria, fungi, and detritivore invertebrates directly utilize these inputs, transferring this energy to other components of the food web. Increases in atmospheric CO2 could indirectly impact woodland stream food webs by chemically altering leaf litter. This study evaluated CO2-induced chemical changes in aspen (Populus tremuloides) leaf litter, and the corresponding effects on stream bacteria, fungi and leaf-shredding cranefly larvae (Tipula abdominalis: Diptera). Leaf litter from plants grown under elevated CO2 had decreased nutritional value to aquatic decomposers and detritivores because of higher levels of structural compounds and lower nitrogen content. Consequently, elevated CO2-grown leaf litter supported 59% lower bacterial production in a stream than litter grown at ambient CO2 levels, while not affecting fungal biomass. Larval craneflies fed elevated CO2-grown microbially colonized leaves consumed less, assimilated less, and grew 12 times slower than their ambient fed counterparts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2486.2002.00460.x
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