Challenge of Culture in Africa: From Restoration to Integration

This book was first published as a two-part essay in 1965 and 1967 in ABBIA - Cameroon Cultural Review - under the title 'Idea of Culture'. Its main argument is that indigenous Africans cultures must be the foundation on which the modern African cultural structure should be raised; the soil into which the new seed should be sown; the stem into which the new scion should be grafted; the sap that should enliven the entire organism. This culture, the object of imperialist mockery and rejected, needs rehabilitation. However, such rehabilitation of African culture cannot be a mere archaeological enterprise. It will not answer to dig up the past and live it as it was. Not only is African culture not without its imperfections, times change and African culture must adapt itself, at every turn, to the changing times. In restoring African culture, it is imperative to steer clear of two extremes: on the one hand, the imperialist arrogance which declared everything African as only fit for the scrap-heap and the dust-bin, and, on the other hand, the overly enthusiastic and rather naive tendency to laud every aspect of African culture as if it were the quintessence of human achievement

Odyssey 2 : A mission toward Neptune and Triton to test General Relativity

Odyssey 2 will be proposed in December 2010 for the next call of M3 missions for Cosmic Vision 2015-2025. This mission, under a Phase 0 study performed by CNES, will aim at Neptune and Triton. Two sets of objectives will be pursued. The first one is to perform a set of gravitation experiments at the Solar System scale. Experimental tests of gravitation have always shown good agreement with General Relativity. There are however drivers to continue testing General Relativity, and to do so at the largest possible scales. From a theoretical point of view, Einstein's theory of gravitation shows inconsistencies with a quantum description of Nature and unified theories predict deviations from General Relativity. From an observational point of view, as long as dark matter and dark energy are not observed through other means than their gravitational effects, they can be considered as a manifestation of a modification of General Relativity at cosmic scales. The scientific objectives are to: (i) test the gravitation law at the Solar System scale; (ii) measure the Eddington parameter; and (iii) investigate the navigation anomalies during fly-bys. To fulfil these objectives, the following components are to be on board the spacecraft: (i) the Gravity Advanced Package (GAP), which is an electrostatic accelerometer to which a rotating stage is added; (ii) radio-science; (iii) laser ranging, to improve significantly the measure of the Eddington parameter. The second set of objectives is to enhance our knowledge of Neptune and Triton. Several instruments dedicated to planetology are foreseen: camera, spectrometer, dust and particle detectors, and magnetometer. Depending on the ones kept, the mission could provide information on the gravity field, the atmosphere and the magnetosphere of the two bodies as well as on the surface geology of Triton and on the nature of the planetary rings around Neptune.Comment: 61st International Astronautical Congress (Prague, Czech Republic - September 2010), 7 page

Serum proteins electrophoresis changes in dogs infected with Dirofilaria immitis, with Dirofi/aria repens and with both of them

L’électrophorèse des protéines sériques sur acétate de cellulose (migration de 4 heures, bande et courbe de même longueur) a été réalisée sur 4 groupes de chiens: l.Non infestés. 2. Infestés par Dirofilaria immitis. 3. Infestés par Dirofilaria repens. 4. Infestation mixte. L’étude statistique des résultats indique une augmentation significative des globulines gamma pour les groupes 2 et 4.Serum proteins electrophoresis on cellulose ace tat (four hours migration, same length for bands and curves) was carried out on four groups of dogs. Group 1 : not infected, group 2 : only infected with Dirofilaria immitis, group 3 : only infected with Dirofilaria repens and group 4 : infected with both of them. A statistic study shows that the serum globulins level rises to a significative value in groups two and four

MICROSCOPE mission analysis, requirements and expected performance

The MICROSCOPE mission aimed to test the Weak Equivalence Principle (WEP) to a precision of $10^{-15}$. The WEP states that two bodies fall at the same rate on a gravitational field independently of their mass or composition. In MICROSCOPE, two masses of different compositions (titanium and platinum alloys) are placed on a quasi-circular trajectory around the Earth. They are the test-masses of a double accelerometer. The measurement of their accelerations is used to extract a potential WEP violation that would occur at a frequency defined by the motion and attitude of the satellite around the Earth. This paper details the major drivers of the mission leading to the specification of the major subsystems (satellite, ground segment, instrument, orbit...). Building upon the measurement equation, we derive the objective of the test in statistical and systematic error allocation and provide the mission's expected error budget.Comment: References update

Astrodynamical Space Test of Relativity using Optical Devices I (ASTROD I) - A class-M fundamental physics mission proposal for Cosmic Vision 2015-2025: 2010 Update

This paper on ASTROD I is based on our 2010 proposal submitted for the ESA call for class-M mission proposals, and is a sequel and an update to our previous paper [Experimental Astronomy 23 (2009) 491-527; designated as Paper I] which was based on our last proposal submitted for the 2007 ESA call. In this paper, we present our orbit selection with one Venus swing-by together with orbit simulation. In Paper I, our orbit choice is with two Venus swing-bys. The present choice takes shorter time (about 250 days) to reach the opposite side of the Sun. We also present a preliminary design of the optical bench, and elaborate on the solar physics goals with the radiation monitor payload. We discuss telescope size, trade-offs of drag-free sensitivities, thermal issues and present an outlook. ASTROD I is a planned interplanetary space mission with multiple goals. The primary aims are: to test General Relativity with an improvement in sensitivity of over 3 orders of magnitude, improving our understanding of gravity and aiding the development of a new quantum gravity theory; to measure key solar system parameters with increased accuracy, advancing solar physics and our knowledge of the solar system; and to measure the time rate of change of the gravitational constant with an order of magnitude improvement and the anomalous Pioneer acceleration, thereby probing dark matter and dark energy gravitationally. It is envisaged as the first in a series of ASTROD missions. ASTROD I will consist of one spacecraft carrying a telescope, four lasers, two event timers and a clock. Two-way, two-wavelength laser pulse ranging will be used between the spacecraft in a solar orbit and deep space laser stations on Earth, to achieve the ASTROD I goals.Comment: 15 pages, 11 figures, 1 table, based on our 2010 proposal submitted for the ESA call for class-M mission proposals, a sequel and an update to previous paper [Experimental Astronomy 23 (2009) 491-527] which was based on our last proposal submitted for the 2007 ESA call, submitted to Experimental Astronom

Cellular and Molecular Mechanisms Underlying the Strong Neonatal IL-12 Response of Lamb Mesenteric Lymph Node Cells to R-848

International audienceabsen

MICROSCOPE mission: first results of a space test of the equivalence principle

According to the weak equivalence principle, all bodies should fall at the same rate in a gravitational field. The MICROSCOPE satellite, launched in April 2016, aims to test its validity at the 10−15 precision level, by measuring the force required to maintain two test masses (of titanium and platinum alloys) exactly in the same orbit. A nonvanishing result would correspond to a violation of the equivalence principle, or to the discovery of a new long-range force. Analysis of the first data gives δ(Ti,Pt)=[−1±9(stat)±9(syst)]×10−15 (1σ statistical uncertainty) for the titanium-platinum Eötvös parameter characterizing the relative difference in their free-fall accelerations

Constitutional Law

This Part provides a vignette of French constitutional history as well as some significant features of the current regime, including information on the State and its territory, as well as up-to-date data on population and demographics.University College Dublin2019-07-02 JG: Origianally submitted with flyer only. Introduction chapter added with author's participation

Constitutional Law

This Part provides a vignette of French constitutional history as well as some significant features of the current regime, including information on the State and its territory, as well as up-to-date data on population and demographics.University College Dublin2019-07-02 JG: Origianally submitted with flyer only. Introduction chapter added with author\u27s participation