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L’observation de la dynamique issue de l’appropriation des interventions en planification familiale à Ngaba explique mieux le faible résultat de ces interventions. Chaque couple recourt à une des méthodes de son choix, selon ses raisons propres. Au sein des couples, il est difficile de dégager un consensus ou un positionnement commun en matière de la reproduction. Il existe plusieurs facteurs qui influencent les couples dans la logique locale en contraste avec la logique globale des interventions en planification familiale. Cette réalité sous étude, nous induit à penser à l'anthropologie de la planification familiale pour chaque communauté ou peuple.

Copyright of Revista Philósophos is the property of Revista Philosophos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Philósophos is the property of Revista Philosophos and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The common belief in the history of science always relates the theory of relativity to the German physicist Albert Einstein, but many interested in the history of physics have doubt about this view, A number of scientists were able to know many of the ideas of theory of relativity before Einstein, Without their efforts, Einstein could not have built up the theory of relativity, The importance of these scientists is that they rebelled against old ideas and introduced new and bold ideas. They paved the way for a new paradigm of thinking in the physical world and opened a new phase in physics. [ABSTRACT FROM AUTHOR]

Copyright of Studii de Ştiintă şi Cultură is the property of Studii de Stiinta si Cultura and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Romanian Review of Private Law / Revista Română de Drept Privat is the property of Universul Juridic Publishing House and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

On 5 June 1905 Poincaré presented a Note to the Académie des Sciences entitled Sur la dynamique de l'électron (“On the dynamics of the electron”). After briefly recalling the context that led Poincaré to write this Note, we comment its content. We emphasize that Poincaré's electron model consists in assuming that the interior of the worldtube of the (hollow) electron is filled with a positive cosmological constant . We then discuss the several novel contributions to the physico-mathematical aspects of Special Relativity that are sketched in the Note, though they are downplayed by Poincaré, who describes them as having only completed the May 1904 results of Lorentz dans quelques points de détail (“in a few points of detail”). [ABSTRACT FROM AUTHOR]

In this paper, we explore some technical issue in the study of a spherical system coupled with isotropic matter distribution. We also study the horizon problem under the influence of higher curvature quantities. We evaluate well-known equations of motion. We also join the exterior region with an interior one by taking the well-known matching conditions. We first find total matter content within the system and then calculate black hole and cosmological horizons. We have developed a technique for determining some dynamical variables that are involved in controlling the time duration of the emergence of horizons as well as singularities. [ABSTRACT FROM AUTHOR]

Copyright of Romanian Review of Private Law / Revista Română de Drept Privat is the property of Universul Juridic Publishing House and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Proposed in 1997, the ACES/PHARAO experiment is a space mission in fundamental physics with two atomic clocks on the International Space Station, a network of ultra-stable clocks on the ground, and space-to-ground time transfer systems. The ACES flight instruments are near completion and launch in space is planned for the first half of 2017 for a mission duration of three years. A key element of the satellite payload is a cold-atom clock designed for microgravity environment, PHARAO, operating with laser-cooled cesium atoms. Here we first report on the design and tests of the PHARAO flight model, which is now completed and ready for launch. We then briefly present the status of development of the other instruments of the ACES payload, the Space Hydrogen Maser, the microwave time-transfer system (MWL), and the laser time transfer ELT. [ABSTRACT FROM AUTHOR]

Copyright of Revue de Synthèse is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A one-dimensional analog that reflects many of the features of the many-body Dirac equation is considered. The model can be solved numerically using a convenient finite basis discrete variable representation. Both an (unbound) harmonic oscillator potential and a (bound) inverse Gaussian one-particle potential are discussed for interacting particles. In a second thread in the paper, the mass term is neglected in the model many-body Dirac equation, and it is shown that the original equation, which has 2N coupled components for N particles can then be reduced to 2N decoupled one-component equations, which can be solved “analytically” for arbitrary many particles interacting through central two-body potentials. [ABSTRACT FROM AUTHOR]

Relativistic density functional theory (ZORA-PBE, COSMO solvation) is used to address the title question, based on comparison with recent experimental data (1). Structural data (bond lengths), vibrational frequencies, and 17O NMR chemical shifts are used to prove that [NpO4(OH)2]3– is the predominant species in high-ionic-strength alkaline solutions of NpVII. Neptunium(VII) complexes have stronger bonds than their formally isoelectronic uranium(VI) analogues. The experimentally observed 300 ppm shift in 17O chemical shifts between the known [UO2(OH)4]2– and NpVII solution is shown to be partly a function of the central metal (NpVII vs. UVI) and not of the coordination environment (tetraoxo vs. dioxo). Comparing, for a given An (UVI or NpVII), actinyl complexes [AnO2X4]2–/1–, X = Cl, F, OH, a decreasing strength of the axial actinyl bond is observed that is traced to electronic factors (equatorial π-competition). [ABSTRACT FROM AUTHOR]

Copyright of Canadian Journal of Chemistry is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Portnov B. A. and Schwartz M. On the relativity of urban location, Regional Studies. The effect of location attributes (e.g., topography, proximity to networks, etc.) depends on how much they stand out in their regional or national contexts. In a region or country where a given advantage or disadvantage are commonplace, they are likely to have lesser effects than where they are uncommon. Thus, cold and rainy places may repel would-be residents in countries or regions offering sunnier alternatives, but might not deter them if such alternatives are absent. Location advantage is thus a relative notion: it might matter regionally and nationally more than internationally... [ABSTRACT FROM AUTHOR]

Abstract: What is the Lorentz transformation (LT) of a spherical wavefront (a set of simultaneous events)? According to Einstein (1905) the LT produces a spherical wavefront whilst according to Poincaré (1908) the LT produces an ellipsoidal wavefront (the events are no longer simultaneous). What is the LT of a plane wavefront (a set of simultaneous events)? According to Einstein the LT is a space transversal (to the direction of propagation) plane wavefront. According to Poincaré, the LT is a non transversal spacetime wavefront (the tangent plane to the ellipsoid). We show that this contrast between Einstein''s and Poincaré''s theory of wavefronts is not connected with the electromagnetic fields but with electromagnetic potentials. Poincaré''s explicit choice is the Lorenz gauge while Einstein''s implicit choice is the transverse gauge. In other words, the convention of synchronization of clocks with light signals is not the same. We show that Poincaré''s elongated ellipse in the system of the source is not only a direct explanation of the null result of Michelson''s experiment but also a direct explanation of the non null Sagnac''s experiment. The fruitless historical polemics of priority between Poincaré and Einstein has been replaced by a very current scientific problematic about the best implementation of simultaneity in the GPS system. To cite this article: Y. Pierseaux, C. R. Physique 8 (2007). [Copyright &y& Elsevier]

Copyright of Synthesis Philosophica is the property of Croatian Philosophical Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revue de Synthèse is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revue de Synthèse is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revue de Synthèse is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revue de Synthèse is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revue de Synthèse is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revue de Synthèse is the property of Brill Academic Publishers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Electric field gradients at the nuclei of gallim and indium are determined by finite field calculations of the atomic energies as functions of the nuclear quadrupole moments. The four-component Dirac–Coulomb–Gaunt Hamiltonian serves as framework, and all electrons are correlated by Fock-space coupled cluster with single and double excitations or by single reference coupled cluster with approximate triples. Large, converged basis sets (e.g., 28s24p20d13f5g4h for In) and virtual spaces are used. Together with experimental nuclear quadrupole coupling constants, known with high precision, the calculated electric field gradients yield the nuclear quadrupole moments. For 69Ga, we get Q = 174(3) mb, in agreement with the earlier 171(2) mb obtained from molecular calculations. The 115In moment is Q = 772(5) mb, considerably lower than the previously accepted 810 mb, and in good agreement with the recent molecular value of 770(8) mb. [ABSTRACT FROM AUTHOR]

Copyright of Canadian Journal of Chemistry is the property of Canadian Science Publishing and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)