1,994 research outputs found

    Migration from Mexico to the US: The Impacts of NAFTA on Mexico and the United States and What to do Going Forward

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    Research indicates four main causes for migration from Mexico to the United States: Incredibly high crime rates, unemployment, poverty rates, and natural disasters. The first two are especially important in regards to trade between the two border sharing countries. Since agreeing to virtually total free trade, the United States has been able to take advantage of Mexico in such a way that has created further deterioration of the state. If the government of Mexico cannot resurrect the thousands of personal business that were effected do to NAFTA, the U.S. cannot expect for migration from Mexico to deteriorate or halt. By displacing Mexico’s small business owner’s, Mexico has effectively made their citizens weak to the inevitable increase in poverty, and the Cartels that have bought out swaths of land and human lives. In this paper, I reveal the direct correlations between agreements within the NAFTA and the millions of displaced agricultural workers in Mexico that caused an increase of immigration from Mexico to the United States. On January 1, 1994, The North American Free Trade Agreement (NAFTA), which includes Canada, Mexico, and the United States, was officially formed. By 2008, virtual free trade in almost all goods and services was established amongst all three countries, with the exception of a limited number of agricultural products traded specifically with Canada. The trade agreements of NAFTA were coupled with a surge of Mexican migrants to the U.S. The question under investigation is, why did so many Mexicans move to the United States after the NAFTA was signed? Contrary to the theoretical benefits of free trade, many citizens of the United States and Mexico have developed deep contention towards the agreement between their countries. In the United States, those whose’ lives revolve around the manufacturing industry argue that increased trade with low-wage countries, such as Mexico, threatens their employment due to industrial re-location. Mexican’s argue that the U.S. is dumping agricultural products and manufacturing industries that destroy local business and decrease the standard of living. Morethan 35 million Americans have Mexican roots, and Mexico is the United States’ third-largest trading partner, next to China. Despite the positive correlation that the economic gravity theory presents, that both countries are at an advantage to trade with one-another, I’m afraid it’s information is flawed. As the United States and Mexico attempt to find a way to grow their economies and decrease migration, from Mexico to the U.S., it is imperative for them to understand that free-trade, under the current NAFTA, has actually increased immigration from Mexico to the U.S. because of minimal protectionisms for Mexico’s workers- especially in agriculture. This paper is written with the intent to inform people of the relationship between trade and immigration, specifically, between the U.S. and Mexico

    Toward reliable morphology assessment of thermosets via physical etching: Vinyl ester resin as an example

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    The morphology of peroxide-cured, styrene crosslinked, bisphenol A-based vinyl ester (VE) resin was investigated by atomic force microscopy (AFM) after ‘physical’ etching with different methods. Etching was achieved by laser ablation, atmospheric plasma treatment and argon ion bombardment. Parameters of the etching were varied to get AFM scans of high topography resolution. VE exhibited a nanoscaled nodular structure the formation of which was ascribed to complex intra- and intermolecular reactions during crosslinking. The microstructure resolved after all the above physical etching techniques was similar provided that optimized etching and suitable AFM scanning conditions were selected. Nevertheless, with respect to the ‘morphology visualization’ these methods follow the power ranking: argon bombardment > plasma treatment > laser ablation

    Simulating ice core 10Be on the glacial–interglacial timescale

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    10Be ice core measurements are an important tool for paleoclimate research, e.g., allowing for the reconstruction of past solar activity or changes in the geomagnetic dipole field. However, especially on multi-millennial timescales, the share of production and climate-induced variations of respective 10Be ice core records is still up for debate. Here we present the first quantitative climatological model of the 10Be ice concentration up to the glacial–interglacial timescale. The model approach is composed of (i) a coarse resolution global atmospheric transport model and (ii) a local 10Be air–firn transfer model. Extensive global-scale observational data of short-lived radionuclides as well as new polar 10Be snow-pit measurements are used for model calibration and validation. Being specifically configured for 10Be in polar ice, this tool thus allows for a straightforward investigation of production- and non-production-related modulation of this nuclide. We find that the polar 10Be ice concentration does not immediately record the globally mixed cosmogenic production signal. Using geomagnetic modulation and revised Greenland snow accumulation rate changes as model input, we simulate the observed Greenland Summit (GRIP and GISP2) 10Be ice core records over the last 75 kyr (on the GICC05modelext timescale). We show that our basic model is capable of reproducing the largest portion of the observed 10Be changes. However, model–measurement differences exhibit multi-millennial trends (differences up to 87% in case of normalized to the Holocene records) which call for closer investigation. Focusing on the (12–37) b2k (before the year AD 2000) period, mean model–measurement differences of 30% cannot be attributed to production changes. However, unconsidered climate-induced changes could likely explain the model–measurement mismatch. In fact, the 10Be ice concentration is very sensitive to snow accumulation changes. Here the reconstructed Greenland Summit (GRIP) snow accumulation rate record would require revision of +28% to solely account for the (12–37) b2k model–measurement differences

    Overcoming of Information Extremism as a Condition of Human and Social Wellbeing

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    The urgency of this research is indisputable because the subjects of information extremism having at their disposal various mass media can disseminate their beliefs and ideas over thousands of people in different countries all over the world. International collaboration is needed to struggle against this evil. The paper provides deep insight into the notion "information extremism", as well as its classification and forms. It is aimed at revealing the specific character of the notions "information extremism" and "information terrorism" and their investigation. Illocutionary influence as the major method of information extremism is highlighted in the paper. The authors demonstrate important influence of mass media including the Internet over readership, especially the youth. It is concluded that the issue of information extremism requires for more rigorous and deeper consideration. It is necessary to fight against forms of its manifestation, because they have a significant effect on homeland and international safety and stability

    Chandrasekhar-Kendall functions in astrophysical dynamos

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    Some of the contributions of Chandrasekhar to the field of magnetohydrodynamics are highlighted. Particular emphasis is placed on the Chandrasekhar-Kendall functions that allow a decomposition of a vector field into right- and left-handed contributions. Magnetic energy spectra of both contributions are shown for a new set of helically forced simulations at resolutions higher than what has been available so far. For a forcing function with positive helicity, these simulations show a forward cascade of the right-handed contributions to the magnetic field and nonlocal inverse transfer for the left-handed contributions. The speed of inverse transfer is shown to decrease with increasing value of the magnetic Reynolds number.Comment: 10 pages, 5 figures, proceedings of the Chandrasekhar Centenary Conference, to be published in PRAMANA - Journal of Physic

    A Conditional Yeast E1 Mutant Blocks the Ubiquitin–Proteasome Pathway and Reveals a Role for Ubiquitin Conjugates in Targeting Rad23 to the Proteasome

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    E1 ubiquitin activating enzyme catalyzes the initial step in all ubiquitin-dependent processes. We report the isolation of uba1-204, a temperature-sensitive allele of the essential Saccharomyces cerevisiae E1 gene, UBA1. Uba1-204 cells exhibit dramatic inhibition of the ubiquitin–proteasome system, resulting in rapid depletion of cellular ubiquitin conjugates and stabilization of multiple substrates. We have employed the tight phenotype of this mutant to investigate the role ubiquitin conjugates play in the dynamic interaction of the UbL/UBA adaptor proteins Rad23 and Dsk2 with the proteasome. Although proteasomes purified from mutant cells are intact and proteolytically active, they are depleted of ubiquitin conjugates, Rad23, and Dsk2. Binding of Rad23 to these proteasomes in vitro is enhanced by addition of either free or substrate-linked ubiquitin chains. Moreover, association of Rad23 with proteasomes in mutant and wild-type cells is improved upon stabilizing ubiquitin conjugates with proteasome inhibitor. We propose that recognition of polyubiquitin chains by Rad23 promotes its shuttling to the proteasome in vivo
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