Browsing by Subject "North America"

Now showing items 1-9 of 9

    • Article  

      Experimental and theoretical studies on physico-chemical parameters affecting the solubility of phosphogypsum 

      Papanicolaou, F.; Antoniou, Stella; Pashalidis, Ioannis (2009)
      Phosphogypsum is a waste by-product of the phosphate fertilizer industry, which is usually disposed in the environment because of its restricted use in industrial applications. Physico-chemical conditions existing in stack ...
    • Article  

      Financial variables and real activity in Canada 

      Hassapis, Christis (2003)
      In this paper we utilize Canadian and U.S. data to investigate the relationship between financial market variables (Canadian and U.S.) and Canadian output growth, using a non-parametric technique. The financial variables ...
    • Article  

      Global dispersal pattern of HIV type 1 subtype CRF01-AE: A genetic trace of human mobility related to heterosexual sexual activities centralized in southeast Asia 

      Angelis, Konstantinos; Albert, Jan; Mamais, Ioannis A.; Magiorkinis, Gkikas; Hatzakis, Angelos E.; Hamouda, O.; Struck, D.; Vercauteren, J.; Wensing, A. M. J.; Alexiev, Ivailo; Åsjö, Birgitta; Balotta, Claudia; Camacho, Ricardo J.; Coughlan, S.; Griskevicius, A.; Grossman, Z.; Horban, A.; Kostrikis, Leontios G.; Lepej, S.; Liitsola, K.; Linka, M.; Nielsen, C.; Otelea, D.; Paredes, R.; Poljak, M.; Puchhammer-Stöckl, E.; Schmit, J. -C; Sönnerborg, A.; Staneková, D.; Stanojevic, M.; Boucher, C. A. B.; Kaplan, L.; Vandamme, A. -M; Paraskevis, Dimitrios N. (2015)
      Background. Human immunodeficiency virus type 1 (HIV-1) subtype CRF01-AE originated in Africa and then passed to Thailand, where it established a major epidemic. Despite the global presence of CRF01-AE, little is known ...
    • Article  

      The global spread of HIV-1 subtype B epidemic 

      Magiorkinis, Gkikas; Angelis, Konstantinos; Mamais, Ioannis A.; Katzourakis, A.; Hatzakis, Angelos E.; Albert, Jan; Lawyer, G.; Hamouda, O.; Struck, D.; Vercauteren, J.; Wensing, A.; Alexiev, Ivailo; Åsjö, Birgitta; Balotta, Claudia; Gomes, P.; Camacho, Ricardo J.; Coughlan, S.; Griskevicius, A.; Grossman, Z.; Horban, A.; Kostrikis, Leontios G.; Lepej, S. J.; Liitsola, K.; Linka, M.; Nielsen, C.; Otelea, D.; Paredes, R.; Poljak, M.; Puchhammer-Stöckl, E.; Schmit, J. C.; Sönnerborg, A.; Staneková, D.; Stanojevic, M.; Stylianou, Dora C.; Boucher, C. A. B.; Nikolopoulos, Georgios K.; Vasylyeva, T.; Friedman, S. R.; van de Vijver, D.; Angarano, G.; Chaix, M. -L; de Luca, A.; Korn, K.; Loveday, C.; Soriano, V.; Yerly, S.; Zazzi, M.; Vandamme, A. M.; Paraskevis, Dimitrios N. (2016)
      Human immunodeficiency virus type 1 (HIV-1) was discovered in the early 1980s when the virus had already established a pandemic. For at least three decades the epidemic in the Western World has been dominated by subtype B ...
    • Article  

      A heuristic solution for the empty container substitution problem 

      Chang, H.; Jula, H.; Chassiakos, Anastassios; Ioannou, Petros A. (2008)
      This paper studies substitution between empty containers of different types in an attempt to reduce the cost of empty container interchange. Since finding an optimal solution requires substantial computational efforts, a ...
    • Article  

      Long-run PPP under the presence of near-to-unit roots: The case of the British Pound-US dollar rate 

      Pittis, Nikitas; Christou, Christina; Kalyvitis, Sarantis; Hassapis, Christis (2009)
      Empirical tests typically provide evidence that the British pound-US dollar exchange rate and the relative wholesale price index contain exact unit roots and exhibit cointegration. However, the cointegrating vector is ...
    • Article  

      R&D depreciation, stocks, user costs and productivity growth for US R&D intensive industries 

      Bernstein, Jeffrey I.; Mamuneas, Theofanis P. (2006)
      This paper estimates R&D depreciation rates for U.S. R&D intensive industries. R&D annually depreciates at
    • Article  

      R&D, innovation, and technological progress: A test of the Schumpeterian framework without scale effects 

      Zachariadis, Marios (2003)
      I use U.S. manufacturing industry data to estimate a system of three equations implied by a model of R&D-induced growth in steady state. These equations relate R&D intensity to patenting, patenting to technological progress, ...
    • Article  

      Research spillovers among European and North-American economics departments 

      Kalaitzidakis, Pantelis; Mamuneas, Theofanis P.; Savvides, Andreas; Stengos, Thanasis (2004)
      In this paper, we investigate the determinants of research output by European economics departments. We use data from a survey we conducted on the various characteristics of these departments. We pay particular attention ...