Grain-size, lithic grains, foraminifera-derived and dinocyst-derived data of sediment core MD99-2281

The last glacial period was punctuated by abrupt climatic events with extrema known as Heinrich and Dansgaard-Oeschger events. These millennial events have been the subject of many paleoreconstructions and model experiments in the past decades, but yet the hydrological processes involved remain elusive. In the present work, high-resolution analyses were conducted on the 12-42 ka BP section of core MD99-2281 retrieved southwest of the Faeroe Islands, and combined with analyses conducted in two previous studies (Zumaque et al., 2012; Caulle et al., 2013). Such a multiproxy approach, coupling micropaleontological, geochemical and sedimentological analyses, allows us to track surface, subsurface, and deep hydrological processes occurring during these rapid climatic changes. Records indicate that the coldest episodes of the studied period (Greenland stadials and Heinrich stadials) were characterized by a strong stratification of surface waters. This surface stratification seems to have played a key role in the dynamics of subsurface and deep-water masses. Indeed, periods of high surface stratification are marked by a coupling of subsurface and deep circulations which sharply weaken at the beginning of stadials, while surface conditions progressively deteriorate throughout these cold episodes; conversely, periods of decreasing surface stratification (Greenland interstadials) are characterized by a coupling of surface and deep hydrological processes, with progressively milder surface conditions and gradual intensification of the deep circulation, while the vigor of the subsurface northward Atlantic flow remains constantly high. Our results also reveal different and atypical hydrological signatures during Heinrich stadials (HSs): while HS1 and HS4 exhibit a "usual" scheme with reduced overturning circulation, a relatively active North Atlantic circulation seems to have prevailed during HS2, and HS3 seems to have experienced a re-intensification of this circulation during the middle of the event. Our findings thus bring valuable information to better understand hydrological processes occurring in a key area during the abrupt climatic shifts of the last glacial period.

(Table 1) Composition of lipids in particulate matter and bottom sediments of the Baltic Sea

Lipid contents in the upper layer of bottom sediments in the Baltic Sea range from 0.37 to 2.66 mg/g (1.2-25.8% Corg). It is shown that the main factors determining composition of lipids in bottom precipitates are relative roles of different sources of lipids in sediments and conditions of sediment accumulation. Runoff of the Daugava River into the Gulf of Riga contributes simple low-polarity lipids. Sterols and certain bound fatty acids originate in living organic matter. Polar lipids are formed by inheritance of complex phospholipids and glycolipids from plankton and/or by formation of polycondensates.

Restoration ecology of coastal lagoons: new methods for the prediction of ecological trajectories and economic valuation

Conservation of the seven lagoons of the Palavas complex (southern France) has been severely impaired by nutrient over-enrichment during at least four decades. The effluents of the Montpellier wastewater treatment plant (WWTP) represented the main nutrient input. To improve the water quality of these lagoons, this WWTP was renovated and upgraded and, since the end of 2005, its effluents have been discharged 11 km offshore into the Mediterranean (total investment €150 M). Possibilities of ecosystem restoration as part of a conservation programme were explored by a focus group of experts. Their tasks were: (i) to evaluate the impact of the reduction of the nutrient input; (ii) if necessary, to design additional measures for an active restoration programme; and (iii) to predict ecosystem trajectories for the different cases. Extension of Magnoliophyta meadows can be taken as a proxy for ecosystem restoration as they favour the increase of several fish (seahorse) and bird (ducks, swans, herons) species, albeit they represent a trade-off for greater flamingos. Additional measures for active ecosystem restoration were only recommended for the most impaired lagoon Méjean, while the least impaired lagoon Ingril is already on a trajectory of spontaneous recovery. A multiple contingent valuation considering four different management options for the Méjean lagoon was used in a pilot study based on face-to-face interviews with 159 respondents. Three levels of ecosystem restoration were expressed in terms of recovery of Magnoliophyta meadows, including their impact on emblematic fish and avifauna. These were combined with different options for access (status quo, increasing access, increasing access with measures to reduce disturbance). The results show a willingness of local populations to pay per year about €25 for the highest level of ecological restoration, while they were only willing to allocate about €5 for additional footpaths and hides.

Una aplicación del método de análisis orientado a objetos de Grady Booch

Uno de los métodos de mayor difusión en análisis orientado a objetos es el de Grady y el artículo describe una parte de los resultados de la aplicación del método al sistema de información de una biblioteca universitaria. Este artículo hace parte de varios trabajos llevados a cabo con los estudiantes de Ingeniería de Sistemas para conocer y aplicar los principales métodos de análisis y diseño orientados a objetos desarrollados en el mundo.

Desarrollo científico de la contabilidad

El desarrollo científico tiene como su fundamento principal, la investigación y esta, a su vez, se vale del método científico, herramienta para el estudio sistemático de la naturaleza que incluye las técnicas de observación y las reglas para el razonamiento y la predicción, las cuales son aplicables a todas las disciplinas. Igualmente la investigación surge de algunas ideas sobre la experimentación planificada y los modos de comunicar los resultados experimentales y teóricos. Es por ello que en este libro se condensan, en siete capítulos, los resultados obtenidos por investigadores contables, que día a día luchan por hacer que la profesión contable sea generadora de nuevo conocimiento y que poco a poco vaya ganado el tan anhelado estatus de profesión científica. Estamos seguros y convencidos de que con los aportes que hagamos los investigadores la disciplina contable se convertirá en muy corto tiempo en una profesión de avanzada y con mayor rigor científico.

A MOBILIDADE DO TRABALHO DO MIGRANTE NORDESTINO E OS MOVIMENTOS XENOFÓBICOS DO CENTRO-SUL: UMA QUESTÃO MIGRATÓRIA

A teoria da mobilidade do trabalho de GAUDEMAR (1977) auxilia-nos na compreensão da presença dos nordestinos em São Paulo e no Centro-Sul brasileiro, pois seu foco está na produção e circulação da força de trabalho. O capital desloca uma quantidade de trabalhadores, não só espacialmente, como também, setorialmente e socialmente. Assim, a ampliação do capital deslocou os nordestinos de sua área de origem para o centro econômico do país – São Paulo, que naquele momento exigia mão de obra. Em geral pouco escolarizados ocupam as formas de trabalho mais precárias, bem como, residem nos espaços mais desvalorizados. Eles possuem uma grande participação nas áreas metropolitanas, em especial São Paulo e Rio de Janeiro. Esse migrante encontra uma diversidade de obstáculos para a sua inserção e sofre discriminações, sendo alvo de chacotas por parte dos paulistanos, ou sendo alvo dos movimentos xenofóbicos.

Curso Uso Terapêutico de Tecnologias Assistivas: direito das pessoas com deficiência e habilidade física motora - 2015

Este curso integra um conjunto de quatro qualificações sobre o tema geral “uso terapêutico de tecnologias assistivas”, organizado com esta finalidade. Seu objetivo é promover a atualização sobre o uso terapêutico das tecnologias assistivas no âmbito da habilitação e da reabilitação das pessoas com deficiência, enfocando habilidade física e autonomia motora com utilização das órteses, próteses e meios auxiliares. Os temas abordados são: Contexto e pressupostos: pessoas com deficiências, direitos, políticas públicas e inclusão social; A atenção à saúde das pessoas com deficiência; Habilidade física e motora