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
  • 68C25  (1)
  • 81.60  (1)
  • 1985-1989  (2)
  • 1987  (2)
  • 1
    Electronic Resource
    Electronic Resource
    A linear time algorithm to find the jump number of 2-dimensional bipartite partial orders (1987)
    Springer
    Order 3 (1987), S. 359-367 
    Details
    ISSN: 1572-9273
    Keywords: 06A10 ; 68C25 ; Ordered set ; jump number ; matching ; dynamic programming ; bipartite permutation graphs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract Let L=u 1 , u 2 , ..., u k be a linear extension of a poset P. Each pair (u i , u i+1 ) of unrelated elements in P is called a jump of L. The jump number problem is to find L with the minimum number of jumps. The problem is known to be NP-hard even on bipartite posets. Here we present a linear time algorithm for it in 2-dimensional bipartite posets. We also discuss briefly some weighted cases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00340778
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Surface chemistry of Zn3P3 single crystals studied by XPS (1987)
    Springer
    Applied physics 43 (1987), S. 197-201 
    Details
    ISSN: 1432-0649
    Keywords: 81.60 ; 82.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract X-ray photoemission spectroscopy (XPS) has been used to study the surface reaction of Zn3P2 single crystals. The spectra of crystals exposed to H2, O2, CO2, O2+H2O or CO2+H2O during a four week period were compared to the spectra of as-grown or in UHV scraped samples. For samples contaminated with the wet gases O2+H2O and CO2+H2O additional phosphorus core levels together with a shift of the zinc core levels were observed. For crystals exposed to atmosphere during several months no phosphorus could be detected on the gasgrown surface, whereas the stochiometry of Zn3P2 was maintained within the bulk. Crystals with scraped surfaces showed no moisture sensitivity. No surface contamination was also detected for Zn3P2 crystals deposited with up to 1000 L H2O or exposed to atmosphere during 30 min.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695623
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...