French Academy of Sciences

About: French Academy of Sciences is a based out in . It is known for research contribution in the topics: Einstein & Population. The organization has 554 authors who have published 499 publications receiving 5300 citations. The organization is also known as: Académie des sciences & Academie des Sciences de l'Institut de France.

Experimental researches in electricity

Abstract: Originally apprenticed to a bookbinder, Michael Faraday (1791–1867) began to attend Sir Humphrey Davy's chemistry lectures purely out of interest. Although he soon recognised that science would be his vocation, there was no defined career path to follow, and when he applied to Davy for work he was gently told to 'attend to the bookbinding'. It was only after a laboratory explosion in which Davy partially lost his sight that Faraday was taken on as his amanuensis. From this difficult beginning stemmed perhaps the most famous scientific career of the nineteenth century. This three-volume collection of Faraday's papers provides a comprehensive record of a key branch of his work. Volume 1, reissued here in a second edition of 1849, covers his early work in electricity and magnetism, including papers on lightning, electric fish, and notes on the elaborate and often beautiful experiments conducted to investigate whether magnetism could produce electricity.

Food security for Africa: an urgent global challenge

Abstract: In 2012, food insecurity is still a major global concern as 1 billion people are suffering from starvation, under-, and malnutrition, and the Food and Agriculture Organization of the United Nations (FAO) has concluded that we are still far from reaching millennium development goal (MDG) number 1: to halve extreme poverty and hunger by 2015. In sub-Saharan Africa, the number of people suffering from hunger is estimated at 239 million, and this figure could increase in the near future. There are many examples of food insecurity in sub-Saharan Africa, some of them having reached catastrophic dimensions, for example, in the Horn of Africa or southern Madagascar. Food insecurity is not just about insufficient food production, availability, and intake, it is also about the poor quality or nutritional value of the food. The detrimental situation of women and children is particularly serious, as well as the situation among female teenagers, who receive less food than their male counterparts in the same households. Soaring food prices and food riots are among the many symptoms of the prevailing food crisis and insecurity. Climate change and weather vagaries, present and forecast, are generally compounding food insecurity and drastically changing farming activities, as diagnosed by the Consultative Group on International Agricultural Research (CGIAR) in June 2011. The key cause of food insecurity is inadequate food production. Since the global food crisis of 2007–2008, there has been an increasing awareness throughout the world that we must produce more and better food; and we should not be derailed from this goal, despite some relief brought by the good cereal harvests in 2011–2012. This is particularly true in sub-Saharan Africa, which needs and wants to make its own green revolution. The African challenge indeed is key to mitigating food insecurity in the world. Commitments were made by the heads of states and governments of the African Union to double the part of their domestic budgets devoted to agriculture in 2010–2011, so as to reach 10%. Technical solutions exist and there are indeed, throughout Africa, good examples of higher-yielding and sustainable agriculture. But good practices have to spread throughout the continent, while at the same time social and economic measures, as well as political will, are indispensable ingredients of Africa’s green revolution. It is also necessary that international donors fulfil their commitment to help African farmers and rural communities and protect them against unfair trade, competition, and dumping of cheap agrifood products from overseas.

Stochastic Calculus of Variations in Mathematical Finance

Abstract: Gaussian stochastic calculus of variations.- Pathwise propagation of Greeks in complete elliptic markets.- Market equilibrium and price-volatility feedback rate.- Multivariate conditioning and regularity of laws.- Non-elliptic markets and instability in HJM models.- Insider trading.- Rates of weak convergence and distribution theory on Gaussian spaces.-Fourier series method for the measurement of historical volatilities.