Water Conflicts: An Unavoidable Challenge from the Transboundary to the Local Dimension

Author(s):  
Andrea Nardini ◽  
Andrea Goltara ◽  
Bertrand Chartier
Author(s):  
Liang Yuan ◽  
Weijun He ◽  
Dagmawi Mulugeta Degefu ◽  
Zhongchi Wan ◽  
Thomas Stephen Ramsey ◽  
...  

Author(s):  
Gabriele U Varieschi

Abstract We continue our analysis of Newtonian Fractional-Dimension Gravity, an extension of the standard laws of Newtonian gravity to lower dimensional spaces including those with fractional (i.e., non-integer) dimension. We apply our model to three rotationally supported galaxies: NGC 7814 (Bulge-Dominated Spiral), NGC 6503 (Disk-Dominated Spiral), and NGC 3741 (Gas-Dominated Dwarf). As was done in the general cases of spherically-symmetric and axially-symmetric structures, which were studied in previous work on the subject, we examine a possible connection between our model and Modified Newtonian Dynamics, a leading alternative gravity model which explains the observed properties of these galaxies without requiring the Dark Matter hypothesis. In our model, the MOND acceleration constant a0 ≃ 1.2 × 10−10m s−2 can be related to a natural scale length l0, namely $a_{0} \approx GM/l_{0}^{2}$ for a galaxy of mass M. Also, the empirical Radial Acceleration Relation, connecting the observed radial acceleration gobs with the baryonic one gbar, can be explained in terms of a variable local dimension D. As an example of this methodology, we provide detailed rotation curve fits for the three galaxies mentioned above.


2020 ◽  
Vol 65 (2) ◽  
pp. 179-193
Author(s):  
Cătălin Badea

"The most crucial element of every life form on our planet, water has always been a source of potential animosity between clans, tribes and even states. With the advent of modern technology we have devoted less and less of our attention to this all-needed resource, but pollution, large-scale industrialization and agriculture, the population boom of the last centuries and crucially the climate calamity that it threatens to unleash, forces us to reconsider the key role played by water in the delicate and fragile ecosystem of our planet. This article takes a look at how water is, and will increasingly be, a source of contention and even conflicts between states, as climate changes and increasingly larger populations will be forced to fight over more and more depleted resources. With a focus on the case of the Nile river and the potential conflict over its water resources between Egypt and Ethiopia, this article examines how the mainstream state of water conflict thinking fails to explain the case of the Nile River Basis and the newly built Grand Ethiopian Renaissance Dam (GERD) and why the alternative ideas that are based on the notions of cooperation and justice might ultimately provide a better way of understanding the complex problem of the delicate management and use of water resources. Keywords: Water conflicts, Egypt, Ethiopia, GERD, The Nile"


Author(s):  
Robert Gwardyński

The Police constitute a major element in the state security system. Their operation has both a national and local dimension. The Police have an impact on a local community’s security, ensuring the safety of people, their health, life, property, as well as maintaining public safety and order. This article aims to indicate the areas of the Police’s operation that result in an improvement of the residents’ safety and an increase in their sense of security.


2007 ◽  
Vol 1 (2) ◽  
pp. 29-57
Author(s):  
K. J. Joy ◽  
Suhas Paranjape
Keyword(s):  

2009 ◽  
Vol 47 (5) ◽  
pp. 3608-3623 ◽  
Author(s):  
Daniel J. Bates ◽  
Jonathan D. Hauenstein ◽  
Chris Peterson ◽  
Andrew J. Sommese

2012 ◽  
Vol 31 (1) ◽  
pp. 74-78 ◽  
Author(s):  
Wenjie Sun ◽  
Qiang Wu ◽  
Donglin Dong ◽  
Jian Jiao
Keyword(s):  

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