ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Springer  (969,750)
  • American Geophysical Union  (61,930)
  • 2010-2014  (485,276)
  • 1995-1999  (361,092)
  • 1970-1974  (185,312)
Collection
Keywords
Publisher
Language
Years
Year
  • 11
    facet.materialart.
    Unknown
    Improved Approximation Algorithm for the Number of Queries Necessary to Identify a Permutation (2013)
    Springer
    Details
    Publication Date: 2023-11-03
    Description: In the past three decades, deductive games have become interesting from the algorithmic point of view. Deductive games are two players zero sum games of imperfect information. The first player, called "codemaker", chooses a secret code and the second player, called "codebreaker", tries to break the secret code by making as few guesses as possible, exploiting information that is given by the codemaker after each guess. A well known deductive game is the famous Mastermind game. In this paper, we consider the so called Black-Peg variant of Mastermind, where the only information concerning a guess is the number of positions in which the guess coincides with the secret code. More precisely, we deal with a special version of the Black-Peg game with n holes and k 〉= n colors where no repetition of colors is allowed. We present a strategy that identifies the secret code in O(n log n) queries. Our algorithm improves the previous result of Ker-I Ko and Shia-Chung Teng (1985) by almost a factor of 2 for the case k = n. To our knowledge there is no previous work dealing with the case k 〉 n. Keywords: Mastermind; combinatorial problems; permutations; algorithms
    Type: Article , PeerReviewed
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 12
    facet.materialart.
    Unknown
    A New QEA Computing Near-Optimal Low-Discrepancy Colorings in the Hypergraph of Arithmetic Progressions (2013)
    Springer
    Details
    Publication Date: 2023-11-03
    Description: We present a new quantum-inspired evolutionary algorithm, the attractor population QEA (apQEA). Our benchmark problem is a classical and difficult problem from Combinatorics, namely finding low-discrepancy colorings in the hypergraph of arithmetic progressions on the first n integers, which is a massive hypergraph (e.g., with approx. 3.88 ×1011 hyperedges for n = 250 000). Its optimal low-discrepancy coloring bound is known and it has been a long-standing open problem to give practically and/or theoretically efficient algorithms. We show that apQEA outperforms known QEA approaches and the classical combinatorial algorithm (Sárközy 1974) by a large margin. Regarding practicability, it is also far superior to the SDP-based polynomial-time algorithm of Bansal (2010), the latter being a breakthrough work from a theoretical point of view. Thus we give the first practical algorithm to construct optimal colorings in this hypergraph, up to a constant factor. We hope that our work will spur further applications of Algorithm Engineering to Combinatorics.
    Type: Article , PeerReviewed
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 13
    facet.materialart.
    Unknown
    The strategic value of geoengineering research (2014)
    Springer
    Details
    Publication Date: 2023-08-15
    Description: Deployment of geoengineering technology should engender serious caution, but geoengineering research would engender a strategic effect on the climate change problem in general. First, the thought that scientists should research geongineering because the world might need it could help society develop an appreciation of the seriousness of the climate change problem. Second, conceptualizing geoengineering through research promotes conceptualizing a sorely needed technical strategy for climate change. Finally, geoengineering research will have a strategic benefit for climate science because the scientific issues that arise for geoengineering bring into focus the very issues that plague climate science in general.
    Type: Book chapter , PeerReviewed
    Format: text
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OCEANREP)
  • 14
    facet.materialart.
    Unknown
    Transgovernance: advancing sustainability governance (2013)
    Springer
    Details
    Publication Date: 2023-07-18
    Description: ‘Transgovernance: Advancing Sustainability Governance’ analyses what implications recent and ongoing changes in the relations between politics, science and media – together characterized as the emergence of a knowledge democracy – may have for governance for sustainable development, on global and other levels of societal decision making, and vice versa: How can the discussion on sustainable development contribute to a knowledge democracy? How can concepts such as second modernity, reflexivity, configuration theory, (meta)governance theory and cultural theory contribute to a ‘transgovernance’ approach which goes beyond mainstream sustainability governance? This volume presents contributions from various angles: international relations, governance and metagovernance theory, (environmental) economics and innovation science. It offers challenging insights regarding institutions and transformation processes, and into the paradigms behind contemporary sustainability governance. This book gives the sustainability governance debate a new context. It transforms classical questions into new options for societal decision making and identifies starting points and strategies aimed at effective governance of transitions to sustainability.
    Language: English
    Type: info:eu-repo/semantics/book
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    CITATION RIFS
  • 15
    facet.materialart.
    Unknown
    Ecosystem Services and Carbon Sequestration in the Biosphere (2013)
    Springer
    Details
    Publication Date: 2023-07-18
    Type: info:eu-repo/semantics/book
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    CITATION RIFS
  • 16
    facet.materialart.
    Unknown
    Recarbonization of the Biosphere : Ecosystems and the Global Carbon Cycle (2012)
    Springer
    Details
    Publication Date: 2023-07-18
    Language: English
    Type: info:eu-repo/semantics/book
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    CITATION RIFS
  • 17
    facet.materialart.
    Unknown
    Continental deformation of Antarctica during Gondwana’s breakup (2013)
    Springer
    In:  EPIC3Earth System Science: Bridging the gaps between disciplines—A multi-disciplinary Helmholtz Graduate Research School, Berlin Heidelberg, Springer, 7 p., pp. 83-89, ISBN: 978-3-642-32235-8
    Details
    Publication Date: 2023-06-21
    Description: Geophysical data acquired along the Antarctic passive margins constrain the structure and geometry of the deformed continental crust. Crustal thickness estimates range between 7 and 50 km and the Antarctic continent–ocean transition zone (COTZ) extends up to 100–670 km towards the ocean. Continental deformation prior to rifting over a c. 100 million years long time span resulted in crustal stretching factors varying between 1.8 and 5.9. The time span of deformation was sufficiently large and the rifting velocity low enough to extend the margin by up to 300–400 km. Crustal thinning generates a significant subsidence and shallow water passages might already have developed during the rifting phase along the margin. Accounting for accurate continental margin deformation has also consequences for plate-tectonic reconstructions.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 18
    facet.materialart.
    Unknown
    The Significance of the long lived (〉400 Years) bivalve Arctica islandica as a high-resolution bioarchive (2013)
    Springer
    In:  EPIC3Earth system science: bridging the gap between disciplines, Earth system science: bridging the gap between disciplines, Heidelberg, Springer, 7 p., pp. 97-103, ISBN: 978-3-642-32234-1
    Details
    Publication Date: 2023-06-21
    Description: Information about past environmental conditions is preserved in the elemental signature of biogenic marine carbonates. Thus, trace element to calcium ratios (Me/Ca) of biogenic calcium carbonates, such as bivalve shells, are often used to reconstruct past environmental conditions at the time of carbonate formation (Foster et al., 2008). In this study, we examine the suitability of the long-lived (〉 400 years) bivalve Arctica islandica as a high-resolution bioarchive by measuring Me/Ca ratios in the shell carbonate. Pb/Ca concentrations in A. islandica shells reflect anthropogenic gasoline lead consumption and further provide a centennial record of lead pollution for the collection site off the coast of Virginia, USA. With A. islandica shells from the North Sea we test the hypothesis that Ba/Ca and Mn/Ca ratios are indicators of the diatom abundance. Our results indicate that statistically both ratios correlate well with the diatom abundance, and yet, on a year-to-year base, there is no consistent reflection of diatom abundance patterns in the Ba/Ca and Mn/Ca annual profiles. These findings indicate that primary production affects Ba/Ca and Mn/Ca shell ratios, though we suggest that both elements are coupled to primary production through different processes and are affected by further, yet unknown processes.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 19
    facet.materialart.
    Unknown
    Seaweed and Man (2012)
    Springer
    In:  EPIC3Seaweed Biology: Novel Insights into Ecophysiology, Ecology and Utilization, Seaweed Biology: Novel Insights into Ecophysiology, Ecology and Utilization, Heidelberg, Berlin, Springer, 509 p., pp. 471-493, ISBN: 978-3642284502
    Details
    Publication Date: 2023-06-21
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 20
    facet.materialart.
    Unknown
    Evaluation of the coupled and extended SCIATRAN version including radiation processes within the water: intial results. (2012)
    Springer
    In:  EPIC3Earth System Science: Bridging the Gaps between Disciplines Perspectives from a Multi-disciplinary Helmholtz Graduate Research School, Series: SpringerBriefs in Earth System Sciences, Heidelberg, Springer, 138 p., pp. 28-30, ISBN: 978-3-642-32235-8
    Details
    Publication Date: 2023-06-21
    Description: To date, the software package SCIATRAN (Rozanov et al. 2002; Rozanov et al., 2005, 2008) has been used for modelling radiative processes in the atmosphere for the retrieval of trace gases from satellite data from the satellite sensor SCIAMACHY (Scanning Imaging Absorption Spectrometer for Atmospheric CHartographY onboard the satellite ENVISAT). This SCIATRAN version only accounted for radiative transfer within the atmosphere and reflection of light at the earth surface. However, radiation also passes the air-water interface, proceeds within the water and is modified by the water itself and the water constituents. Therefore, SCIATRAN has been extended by oceanic radiative transfer and coupling it to the atmospheric radiative transfer model under the terms of established models for radiative transfer underwater (Kopelevich 1983; Morel et al. 1974, 2001; Shifrin 1988; Buitevald et al. 1994; Cox and Munk 1954a, 1954b; Breon and Henriot 2006; Mobley 1994) and extending the data bases to include the specific properties of the water constituents (Pope and Fry 1997; Haltrin 2006; Prieur and Sathyendranath 1981).
    Repository Name: EPIC Alfred Wegener Institut
    Type: Inbook , peerRev
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    PAPER (OA)
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...