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Global Economic Integration and Land Use Change
( Alla Golub ),( Thomas W. Hertel ) 세종대학교 경제통합연구소 2008 Journal of Economic Integration Vol.23 No.3
The goal of this work is to investigate the role of global integration in determining long-run patterns of land-use change. We utilize a dynamic general equilibrium model that has been modified to incorporate the most important economic features driving global land demand and supply, and simulate a baseline period from 1997-2025 over which land rents world-wide rise sharply and the global allocation of land between agriculture and forestry changes rather significantly in some regions. Through a series of restricted simulations of the model, we are able to isolate the impact on land markets of the following elements of growth and globalization: (i) population growth, (ii) real income growth, (iii) access of new forest lands, and (iv) international trade. We found that international trade plays a very substantial role in mediating between the land-abundant, slower growing economies of the Americas and Australia/New Zealand, and the land-scarce, rapidly growing economies of Asia. In summary, when combined, the forces of globalization are expected to play a large role in determining the pattern of land use change.
COMPUTATIONAL EXPERIMENT FOR FOCUSATORS INVESTIGATION
Doskolovich, L. L.,Golub, M. A.,Kazanskiy, N. L.,Soifer, V. A. 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
Computer generated diffractive optical elements, known as $quot;focusators$quot;, provide for very complicated focal intensity distributions, depending on the number of pixels and quantization levels. The manufacturing of such elements is very expensive and must be preceded by computer simulation of their performance. Computer experiment with laser beam focusator into segments is described in this report, the estimations of power efficiency and focal line quality for various parameters of the phase digitization are obtained.
Carbonate Coatings on Plant Twigs Found from a Travertine-Depositing Small Stream, Dijon, France
이성주,공달용,Stjepko Golubic 한국지구과학회 2014 한국지구과학회지 Vol.35 No.5
A number of coated grains (spherical to elongated ones in shape) were collected from a small stream, Dijon,France. They were characterized by typical concentric lamination surrounding broken twigs, and were thus identified asconcentric precipitation on plant twigs. Within carbonate coatings of the plant twigs, two morphological groups including,eukaryotic green algae (Vaucheria sp.) and cyanobacteria (Scytonema sp. and Rivularia sp.) were detected, which formcarbonate crystals that are surrounding their filaments. The filaments could have triggered carbonate precipitation byphotosynthetic removal of CO2 causing the increase of alkalinity of the water, and by supporting their sheaths asnucleation sites. Such encrusted twigs were found from 70 meters downstream, in which temperature and pH weremeasured as 11.1oC and 8.18, respectively. These water chemistries (11.1oC and pH 8.18), with the aid of microbialphotosynthesis, were likely to provide a suitable condition for carbonate precipitation on the twigs.
Papynov, E.K.,Belov, A.A.,Shichalin, O.O.,Buravlev, I. Yu,Azon, S.A.,Golub, A.V.,Gerasimenko, A.V.,Parotkina, Yu. А.,Zavjalov, A.P.,Tananaev, I.G.,Sergienko, V.I. Korean Nuclear Society 2021 Nuclear Engineering and Technology Vol.53 No.7
In the present study, an original spark plasma sintering-reactive synthesis (SPS-RS) method for minerallike ceramic materials based on SrAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> feldspar-like skeleton structure was used for the first time, promising solid-state matrices for reliable immobilization of high-energy <sup>90</sup>Sr. The method is based on the "in-situ" reaction of a mixture of SrO, Al<sub>2</sub>O<sub>3</sub> and SiO<sub>2</sub> oxides when heated by a unipolar pulsed current under compacting pressure. The phase and elemental composition structure were studied. The dynamics of the consolidation of the reaction mixture of oxides was studied in the range of 900-1200 ℃. The study found the temperature of the high-speed (minutes) SPS-RS formation of single-phase SrAl<sub>2</sub>Si<sub>2</sub>O<sub>8</sub> composition ceramic in the absence of intermediate reaction products with a relative density of up to 99.2% and compressive strength up to 145 MPa and a strontium leaching rate of 10<sup>-4</sup>g/cm<sup>2</sup>·day.