90,221 research outputs found
GAME THEORY ANALYSIS OF COMPETITION FOR GROUNDWATER INVOLVING EL PASO, TEXAS AND CIUDAD JUAREZ, MEXICO
No full textWe examine the potential gains from cooperation in the withdrawal of water from the Hueco Bolson aquifer that provides municipal water supply for El Paso, Texas and Ciudad Juarez, Mexico. The aquifer lies beneath the international border, and both cities operate independently regarding pumping rates and withdrawals. We estimate the gains by comparing four scenarios in a dynamic setting: 1) a status quo scenario in which both cities continue extracting groundwater as they are at present, 2) a Nash non-cooperative game scenario, 3) a Nash bargaining scenario, and 4) a scenario that involves maximizing the sum of net benefits in both cities. All scenarios, including the non-cooperative game, provide a longer useful life of the Hueco Bolson aquifer than does the status quo. In the Nash bargaining scenario, both cities gain from cooperation and the sum of net benefits approaches the maximum that can be obtained by maximizing that value explicitly.Resource /Energy Economics and Policy,
Fertility transition in Benin : new reproductive patterns or traditional behaviours?.
No full textThis study analyses reproductive changes in Benin,
a
West African
country with
high fertility
and
low prevalence of use of modem contraceptive methods, using a combination
of quantitative
and
qualitative approaches. Findings indicate that a transition to
lower fertility is
underway, particularly
in the urban areas, as a result of an emerging pattern
of
birth limitation
and continued
desire for the
traditional long birth intervals. But only a
small
change
has
occurred
in the
main proximate
determinants of fertility. The data suggest:
that changes in childhood mortality
in
combination
with
increased
women's
education,
though modest, have probably created
a
demand for fertility
control
among
women;
that induced abortion among other
factors,
may
be
one of the
means through
which
such
demand was met, particularly in urban areas;
and that the economic crisis of the 1980s was the
main catalyst
which precipitated the
onset
of transition.
Changes in reproductive preference and practice suggest
a
diffusion
process,
from the
urban
and
more educated women to the rural and less educated
ones.
The
data
also
reveal that the
low
prevalence of use of modem contraception may
be
associated with
poor
knowledge,
widespread
fear
of side effects and complications and poor quality
of
family
planning
services.
The
main
policy
implication of these results is that an appropriate reproductive
health
programme
is
required
to
address women's needs and reduce the levels of
unwanted
pregnancies and
induced
abortion
which
are likely to be rising rapidly
ESTIMATING POTENTIAL GAINS TO COOPERATION FOR LIMITED WATER RESOURCES ALONG THE RIO GRANDE
No full textWe examine the potential gains from cooperation in the withdrawal of water from the Hueco Bolson aquifer that provides a substantial portion of municipal water supplies in El Paso, Texas and Ciudad Juarez, Mexico. The aquifer lies beneath the international border, and both cities operate independently regarding pumping rates and annual withdrawals. The natural the rate of recharge has been less than the sum of annual withdrawals since the early 1900s, and the resource likely will be depleted if current pumping rates are maintained. Optimal pumping rates and depths are described using a model that maximizes the sum of net benefits obtained from municipal water supplies in both cities. Those results are compared with pumping rates and depths obtained using a dynamic game-theory model of strategic behavior involving the two cities.Resource /Energy Economics and Policy,
Is fertility declining in Benin?
No full textThis study analyzes reproductive changes in Benin, a West African country with high fertility and low prevalence of use of modern contraceptive methods, using a combination of quantitative and qualitative approaches. Findings indicate that an irreversible fertility transition has started as the result of an emerging pattern of birth limitation and continued desire for the traditional long birth intervals. The data suggest that changes in childhood mortality in combination with an increase in women's education, although modest, have created a demand for fertility control among women; that induced abortion may be one of the means through which such demand is being met, particularly in urban areas; and that the economic crisis of the 1980s was the main catalyst that precipitated the onset of transition. Changes in reproductive preferences and practice suggest a diffusion process, from urban and more educated women to rural and less-educated ones
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Synthesis of binary transition metal nitrides, carbides and borides from the elements in the laser-heated diamond anvil cell and their structure-property relations
No full textTransition metal nitrides, carbides and borides have a high potential for industrial applications as they not only have a high melting point but are generally harder and less compressible than the pure metals. Here we summarize recent advances in the synthesis of binary transition metal nitrides, carbides and borides focusing on the reaction of the elements at extreme conditions generated within the laser-heated diamond anvil cell. The current knowledge of their structures and high-pressure properties like high-(p; T) stability, compressibility and hardness is described as obtained from experiments
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
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