Создание облачной виртуальной образовательной среды электронного обучения

E-learning creates and continues to actively develop new type of learning due to the organization of the educational process, typical for the third stage of development of the educational institutions of mankind. Creating cloud-based virtual educational enviroment is an example of creating a model for understanding the problems of analysis and design of e-learning.Электронное обучение (e-learning) создает и продолжает активно развивать новый тип обучения благодаря организации образовательного процесса, типичного для третьего этапа развития учебных заведений человечества. Создание облачной виртуальной образовательной среды является примером создания модели для понимания проблемы анализа и проектирования электронного обучения

In situ phytoplankton distributions in the Amundsen Sea Polynya measured by autonomous gliders

The Amundsen Sea Polynya is characterized by large phytoplankton blooms, which makes this region disproportionately important relative to its size for the biogeochemistry of the Southern Ocean. In situ data on phytoplankton are limited, which is problematic given recent reports of sustained change in the Amundsen Sea. During two field expeditions to the Amundsen Sea during austral summer 2010-2011 and 2014, we collected physical and bio-optical data from ships and autonomous underwater gliders. Gliders documented large phytoplankton blooms associated with Antarctic Surface Waters with low salinity surface water and shallow upper mixed layers (\u3c 50 m). High biomass was not always associated with a specific water mass, suggesting the importance of upper mixed depth and light in influencing phytoplankton biomass. Spectral optical backscatter and ship pigment data suggested that the composition of phytoplankton was spatially heterogeneous, with the large blooms dominated by Phaeocystis and non-bloom waters dominated by diatoms. Phytoplankton growth rates estimated from field data (\u3c = 0.10 day(-1)) were at the lower end of the range measured during ship-based incubations, reflecting both in situ nutrient and light limitations. In the bloom waters, phytoplankton biomass was high throughout the 50-m thick upper mixed layer. Those biomass levels, along with the presence of colored dissolved organic matter and detritus, resulted in a euphotic zone that was often \u3c 10 m deep. The net result was that the majority of phytoplankton were light-limited, suggesting that mixing rates within the upper mixed layer were critical to determining the overall productivity; however, regional productivity will ultimately be controlled by water column stability and the depth of the upper mixed layer, which may be enhanced with continued ice melt in the Amundsen Sea Polynya

Some properties of the k-dimensional Lyness' map

This paper is devoted to study some properties of the k-dimensional Lyness' map. Our main result presentes a rational vector field that gives a Lie symmetry for F. This vector field is used, for k less or equal to 5 to give information about the nature of the invariant sets under F. When k is odd, we also present a new (as far as we know) first integral for F^2 which allows to deduce in a very simple way several properties of the dynamical system generated by F. In particular for this case we prove that, except on a given codimension one algebraic set, none of the positive initial conditions can be a periodic point of odd period.Comment: 22 pages; 3 figure

Evidence for Shared Cognitive Processing of Pitch in Music and Language

Language and music epitomize the complex representational and computational capacities of the human mind. Strikingly similar in their structural and expressive features, a longstanding question is whether the perceptual and cognitive mechanisms underlying these abilities are shared or distinct – either from each other or from other mental processes. One prominent feature shared between language and music is signal encoding using pitch, conveying pragmatics and semantics in language and melody in music. We investigated how pitch processing is shared between language and music by measuring consistency in individual differences in pitch perception across language, music, and three control conditions intended to assess basic sensory and domain-general cognitive processes. Individuals’ pitch perception abilities in language and music were most strongly related, even after accounting for performance in all control conditions. These results provide behavioral evidence, based on patterns of individual differences, that is consistent with the hypothesis that cognitive mechanisms for pitch processing may be shared between language and music.National Science Foundation (U.S.). Graduate Research Fellowship ProgramEunice Kennedy Shriver National Institute of Child Health and Human Development (U.S.) (Grant 5K99HD057522

Broca's Region: Novel Organizational Principles and Multiple Receptor Mapping

A novel map of Broca's language region is proposed based on transmitter receptor distributions as functionally relevant molecular markers. It sheds new light on the relation between anatomy and functional segregation

The use of layered model when implementing E-learning

E-learning creates and continues to actively develop new type of learning due to the organization of the educational process, typical for the third stage of development of the educational institutions of mankind. Creating cloud-based virtual educational enviroment is an example of creating a model for understanding the problems of analysis and design of e-learning

Autour d'une étude génétique sur la négation conjonctive

Maury Liliane, Porro E., Rogalsky J. Autour d'une étude génétique sur la négation conjonctive. In: Bulletin de psychologie, tome 28 n°314, 1974. pp. 213-223

Comparação de métodos para determinação do extrato seco total em doce de leite pastoso

Dulce de leche is a typical product from Latin America, produced and consumed in large scale in Brazil and Argentina. In Brazil the Dulce de leche production is done by many companies from handmade by large firms generating products with a large variation in quality especially in physical-chemical (moisture/total dry matter) and sensory characteristics (color, appearance, texture, taste). The moisture content and the total dry matter are determined through the evaporation of water of the product or loss of the moisture in suitable temperature and evaluation until constant weight. The objective of this study was to compare four methods for determining of total dry matter described by Silva et. al. (1997), Brasil (2006-A,B) and Adolfo Lutz (1985). No significant differences (p>0,05) were found between the average values of total dry matter by the methods employed. In accordance with the data obtained in the total dry matter analysis for Dulce de leche concluded that the used methods in this work had presented high precision and repeatability. The Brazil (2006- A) method in addition to being a method recommended by the Brazilian legislation for total solids analysis in milk products presented greater ease in the analysis execution being therefore the method suggested for determining the total dry matter in Dulce de leche.O Doce de Leite é um produto típico da América Latina, produzido e consumido em grande escala no Brasil e na Argentina. No Brasil a produção de doce de leite é feita por muitas empresas, desde as caseiras até as grandes, gerando produtos com uma grande variação na qualidade, especialmente nas características físico-químicas (umidade/sólidos totais) e sensoriais (cor, aparência, textura, sabor). O teor de umidade e o extrato seco total são determinados por meio da evaporação da água ou perda da umidade do produto em estufa em temperatura adequada para cada produto e pesagem até peso constante. O objetivo deste estudo foi comparar quatro métodos para determinação do extrato seco, o descrito por Silva et. al. (1997), Brasil (2006 - A, B) e Adolfo Lutz (1985). A diferença encontrada entre os valores médios de extrato seco total nos métodos empregados não foi significativa (p>0,05). De acordo com os dados obtidos na análise de extrato seco total de doce de leite pastoso concluiu-se que os métodos empregados neste trabalho apresentaram alta precisão e repetibilidade. O método Brasil (2006, A) além de ser preconizado pela legislação brasileira para análise de sólidos totais em produtos lácteos, apresentou maior facilidade de execução sendo, portanto o método sugerido para determinação do extrato seco total em doce de leite pastoso.