10,911 research outputs found

    Representation of Minorities Displayed on College Webpages

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    Advertisements play an important role in nearly everyone\u27s life. Every single day people view a wide range of advertisements. With the population of America becoming more and more diverse in terms of race it would make sense that advertisements would reflect that same concept. However, it does not appear that advertisements actually reflect this idea. In the 2010 ads for the Super Bowl, only four out of the sixty-seven featured an African American in an ad. (Lapchick, 2010) Not only are minorities not being adequately represented in advertisements but they also only get featured for certain ads. African Americans find themselves featured in ads for beauty whereas Asians are found more in ads for technology. (Sheehan, 2014) There is obviously a misrepresentation of minorities in ads however, what is currently unknown is if this is true when it comes to college ads. Nearly every college, if not all, are advertising their schools so that more and more people will attend their school. The true question is whether or not college ads have continued with the mainstream ideals of advertising. A way to analyze this is by selecting 3 universities and 3 community or junior colleges by random and then looking at students presented on their website front page. Students who were being showcased on the website are students interacting with each other and are singled out for a variety of reasons. By comparing how many times a minority student appears in an advertisement versus what the overall percentage that minority group makes up at that specific school, one could determine whether or not that minority group is being adequately represented in ads. This is important because schools could possibly not be representing what their student demographics show. Just in all types of other advertisements this could affect how someone views a school and potentially how someone selects a school. This deeply impacts both the students and the schools

    Analytical microprobes: getting more out of less

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    The arsenal of techniques capable of getting chemical information from reduced spatial domains has been a constant in the analytical instrumentation. Such evolution has run in parallel with the extraordinary advances in the field of microscopy that have produced a deep impact in our vision of the world and the relationship between functionality and molecular structure. It was obvious since our access to the microscopic world that even the most homogeneous structures where far from being considered as such when the zoom was on. Microbeam analysts are challenged daily by the sophisticated problems which arise with our high-tech world, and the shocking voracity of bioanalysis for any tool capable of a better understanding of our living systems. Since the early days of modern spectrochemical analysis where the capabilities of arc/spark to perform chemical analysis localized over an area of several square millimeters, a long journey has been run. One of the main advances has been the happy marriage of such techniques with mass spectrometry to get the best of both worlds. Nowadays, lasers, electron guns, ion guns, discharge lamps, electrospray jets, metal capillaries and many other approaches are used to create ions from reduced sample areas that are further sorted and detected in a mass spectrometer. The applications are still growing and it is still difficult to see if there is a limit. The talk will provide an overview of analytical microprobes focusing in those involving lasers and gas guns. Thus, laser-ionization mass spectrometry, secondary ion mass spectrometry or low-energy ion scattering will be commented and compared with some other. Selected applications will be shown trying to emphasize the strengths of the techniques, without forgetting the inherent weaknesses of each one.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

    A convergent expansion of the Airy's integral with incomplete Gamma functions

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    There are two main power series for the Airy functions, namely the Maclaurin and the asymptotic expansions. The former converges for all finite values of the complex variable, zz, but it requires a large number of terms for large values of z|z|, and the latter is a Poincar\'{e}-type expansion which is well-suited for such large values and where optimal truncation is possible. The asymptotic series of the Airy function shows a classical example of the Stokes phenomenon where a type of discontinuity occurs for the homonymous multipliers. A new series expansion is presented here that stems from the method of steepest descents, as can the asymptotic series, but which is convergent for all values of the complex variable. It originates in the integration of uniformly convergent power series representing the integrand of the Airy's integral in different sections of the integration path. The new series expansion is not a power series and instead relies on the calculation of complete and incomplete Gamma functions. In this sense, it is related to the Hadamard expansions. It is an alternative expansion to the two main aforementioned power series that also offers some insight into the transition zone for the Stokes' multipliers due to the splitting of the integration path. Unlike the Hadamard series, it relies on only two different expansions, separated by a branch point, one of which is centered at infinity. The interest of the new series expansion is mainly a theoretical one in a twofold way. First of all, it shows how to convert an asymptotic series into a convergent one, even if the rate of convergence may be slow for small values of z|z|. Secondly, it sheds some light on the Stokes phenomenon for the Airy function by showing the transition of the integration paths at argz=±2π/3\arg z = \pm 2 \pi/3.Comment: 21 pages, 23 figures. Changes in version 2: i) Footnote 10 has been added, ii) Figure 5 has been added for a deeper analysis of the results, iii) Reference 15 has been added, iv) Typo: A ±\pm was missing in argz=±2π/3\arg z = \pm 2 \pi/3 (abstract), v) Some font size changes and improved labelling in the figures Changes in version 3: minor edition change

    Nicaragua: Without structural changes there´ll be no sustainable reduction of rural poverty

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    This is a contribution of the ENVIO-NITLAPAN. The author is member of the scientific council of the RCASAE, and he is a senior researcher of the CAU NITLAPAN.Poverty Reduction Strategies, Agriculture and Development, Food Security and Poverty, E24, E23, D43, D72,
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