نتایج جستجو برای: boolean center
تعداد نتایج: 306069 فیلتر نتایج به سال:
We find two Fσδ ideals on N neither of which is Fσ whose quotient Boolean algebras are homogeneous but nonisomorphic. This solves a problem of Just and Krawczyk (1984). We consider Boolean algebras of the form P(N)/I, where I is an ideal on N containing the ideal Fin of finite sets. In [3] Just and Krawczyk formulated several conditions on the ideals I,J that guarantee their quotients P(N)/I an...
the water crisis is harmful effects on human life. also one of the most problems in the human society is water resources management. in this study, site selection of most suitable areas for artificial recharge using boolean model. criteria used to select the most suitable area for artificial recharge included: infiltration, slope, aquifer thickness, aquifer quality. the layers were produced an...
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forest ecosystems that have spent a long time to mature, offer important goods and services to humanity. hence, utilization and exploitation of these resources should be based on careful assessment of their ecological value and potential. ecological land evaluation is an approach based on land quality, vulnerability and potential assessment for different acceptable uses drawing upon related mod...
The increasing growth of human population and the number of livestock and wasteful has led to a rise in the trend of land degradation in the last few decades. Identifying the factors of destruction and sustainability of Rangelands is one of the first steps in reforming the exploitation of these resources and rehabilitating them. hence This study was done on the necessity of analysis and evaluat...
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