نتایج جستجو برای: and increasing urbanization
تعداد نتایج: 16846470 فیلتر نتایج به سال:
Abstract Most of the global population will live in urban areas 21st century. We study impacts urbanization on future river pollution taking a multi-pollutant approach. quantify combined point-source inputs nutrients, microplastics, chemical (triclosan) and pathogen ( Cryptosporidium ) to 10,226 rivers 2010, 2050 2100, show how pollutants are related. Our scenarios consider socio-economic devel...
Zoonotic parasitic diseases are increasingly impacting human populations due to the effects of globalization, urbanization and climate change. Here we review the recent literature on the most important helminth zoonoses, including reports of incidence and prevalence. We discuss those helminth diseases which are increasing in endemic areas and consider their geographical spread into new regions ...
rapid population increase, expanding urbanization, lack of employment opportunities, particularly in agriculture, population pressure on natural resources and failing to create and expand medium and large industries, especially in developing countries led industrialization strategy that these countries from the mid-decade villages 1970 in their development programs to consider. this year emphas...
Sustainability of agriculture is challenged by increasing sprawl in urban agglomerations. Under increasing agglomeration economies in large and even medium sized cities, more and more soil is being subtracted to agriculture, depriving agricultural activities of the main production factor. The extent to which the expanding urbanization threatens agricultural development depends on the urban spat...
One of the most notable empirical regularities in political economy is the relationship between income per capita and democracy. Today, all OECD countries are democratic, while many of the nondemocracies are in the poor parts of the world, for example sub-Saharan Africa and Southeast Asia. The positive cross-country relationship between income and democracy in the 1990s is depicted in Figure 1,...
Complementing the results claiming that the maximal length L n of an increasing subsequence in a random permutation of f1; 2; : : : ; ng is highly concentrated, we show that L n is not concentrated in a short interval: sup l P(l L n l + n 1=16 log ?3=8 n) ! 0 as n ! 1.
Given a distribution G over labeled bipartite (multi) graphs, G = (W; M; E) where jWj = jMj = n, let L(n) denote the size of the largest planar matching of G (here W and M are posets drawn on the plane as two ordered rows of nodes, an upper and a lower one, and a (w; m) edge is drawn as a straight line between w and m). The main focus of this work is to understand the asymptotic (in n) behavior...
The length is(w) of the longest increasing subsequence of a permutation w in the symmetric group Sn has been the object of much investigation. We develop comparable results for the length as(w) of the longest alternating subsequence of w, where a sequence a, b, c, d, . . . is alternating if a > b < c > d < · · · . For instance, the expected value (mean) of as(w) for w ∈ Sn is exactly (4n + 1)/6...
We investigate the probability distribution of the length of the second row of a Young diagram of size N equipped with Plancherel measure. We obtain an expression for the generating function of the distribution in terms of a derivative of an associated Fredholm determinant, which can then be used to show that as N → ∞ the distribution converges to the Tracy-Widom distribution [TW] for the secon...
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