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Search Results: 1 - 10 of 9870 matches for " Patrick Lallement "
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Volatility Forecasting of Market Demand as Aids for Planning Manufacturing Activities  [PDF]
Jean-Pierre Briffaut, Patrick Lallement
Journal of Service Science and Management (JSSM) , 2010, DOI: 10.4236/jssm.2010.34045
Abstract: The concepts and techniques designed and used for pricing financial options have been applied to assist in scheduling manufacturing activities. Releasing a manufacturing order is viewed as an investment opportunity whose properties are similar to a call option. Its value can be considered as the derivative of the market demand mirrored in the selling price of the manufactured products and changes over time following an Itô process. Dynamic programming has been used to derive the optimal timing for releasing manufacturing orders. It appears advisable to release a manufacturing when the unit selling price come to a threshold P* given by the relation P* = β/(β–1) C with C = unit cost price. β is a parameter whose value depends on the trend parameter α and the volatility σ of the selling price, the discount rate ρ applicable to the capital appreciation relevant to the business context under consideration. The results have been successfully applied to the evolution of the quarterly construction cost index in France over ten years.
Raízes alem?s da sociologia econ?mica
Lallement, Michel;
Tempo Social , 2006, DOI: 10.1590/S0103-20702006000100019
Abstract: the text reassesses the use of weber and the german historical school as classical sources in the formation of institutionalist economics in the us academic context during the final decades of the 19th century. this aim in mind, it turns to weber's writings on the sociology of law, and the connection between juridical norms and economic action. subsequently, the text presents the reception of his work on the other side of the atlantic, in particular via the figures of richard t. ely, the leading figure of a generation of students influenced by the german cultural environment, followed later by j. r. commons, a close reader of the former's work. the article also focuses on the relations between this intellectual tradition and the themes of industrial democracy and large cooperative companies in the united states, a process that established the historical conditions for the later emergence of economic sociology. in conclusion, it suggests that the 'elective affinities' between economics and other social spheres, an approach rooted in weber, help explain lines of continuity found in more recent disciplinary classifications.
Les enjeux de l’harmonisation des didactiques pour l’enseignement des langues en contexte scolaire plurilingue
Fabienne Lallement
Synergies France , 2005,
Le songe du livrier The Dream of the Bookwriter
Michel Lallement
Temporalités , 2010,
Abstract: Signé par L.S. Mercier, L’An deux mille quatre cent quarante. Rêve s’il en f t jamais (1771) transporte le lecteur dans un futur lointain, au sein d’une ville (Paris), qui cumule tous les atouts : les m urs, la religion, la vie culturelle, le système politique, le commerce… sont tels que la vie est bonne pour tous. Produit typique de la philosophie des Lumières, l’ouvrage impose un nouveau genre, celui de l’uchronie. L.S. Mercier découvre un troisième infini – le temps –, grace auquel il renouvelle la manière d’écrire l’utopie. Written by L.S. Mercier, L’An deux mille quatre cent quarante. Rêve s’il en f t jamais (1771) takes the reader to a distant future in a city (Paris) which accumulates all the advantages: customs, religion, culture, political life, economy… are perfect, so that the life is good for everybody. Typical application of the Enlightenment philosophy, the book creates a new literary style: uchronia. L.S. Mercier discovers a third infinity – time. Thanks to it, he renews the way to write utopia.
Une antinomie durkheimienne… et au-delà A Durkheimian antinomy… and beyond. Sociological considerations on Time and temporalities
Michel Lallement
Temporalités , 2009,
Abstract: Le temps demeure une énigme irrésolue pour les sociologues, qui préfèrent désormais mobiliser la catégorie de temporalité. Pour comprendre une telle option, l’article propose de brosser un tableau des grandes options intellectuelles retenues depuis la fin du XIXe siècle par les sociologues qui ont travaillé sur le sujet. Ce faisant, la thèse défendue dans l’article est la suivante. Suite à la tentative pour partie avortée de l’école durkheimienne de regarder le temps comme un fait social à part entière, deux directions différentes ont été empruntées : d’un c té des sociologies qui mettent avant tout l’accent sur la dimension collective des cadres temporels au risque d’en exagérer l’homogénéité, de l’autre des travaux qui insistent sur la pluralité et la fragmentation des temps sociaux. Afin de résoudre l’antinomie, il convient – ce que peu de sociologues se sont efforcés de réaliser – de construire une théorie sociologique à part entière du temps, ou plut t des temporalités. Ce n’est pas le moindre des mérites de W. Grossin que d’avoir travaillé à la construction d’un langage formel qui aide à uvrer en ce sens. For sociologists, time has always been an intellectual enigma. Lately, another concept – temporality – has been preferred in contemporary sociological research. To understand this evolution, this paper sketches a very short history of the sociological theories of Time. The Durkheimian school, which played a pioneering role in the sociology of knowledge, failed to analyze time as a social fact. Later, two types of theories evolved. The first one regards time as a collective construction, without paying attention to the different representations of time social groups build. On the contrary, the second one provides theories of the social based upon notions of segmentation and differentiation. In order to surmount this antinomy, we need a general theory of temporalities. The sociological framework proposed by W. Grossin is a relevant way to attain such a goal.
El empleo de los sociólogos: construcción de un objeto, desarrollo
Michel Lallement
Política y Sociedad , 2000, DOI: -
Abstract: Sin resumen
3D maps of the local interstellar medium: searching for the imprints of past events
Rosine Lallement
Physics , 2014, DOI: 10.1088/1742-6596/577/1/012016
Abstract: Inversion of interstellar gas or dust columns measured along the path to stars distributed in distance and direction allows reconstructing the distribution of interstellar matter (ISM) in 3D. A low resolution IS dust map based on the reddening of 23,000 stars illustrates the potential of future maps. It reveals the location of the main IS clouds within $\sim$1kpc and, owing to biases towards weakly reddened targets, regions devoid of IS matter. It traces the Local Bubble and neighboring cavities, including a giant, $\geq$1000 pc long cavity located beyond the so-called $\beta$CMa tunnel, bordered by the main constituents of the Gould belt (GB), the rotating and expanding ring of clouds and young stars, inclined by $\sim$ 20$^{\circ}$ to the galactic plane. From comparison with diffuse X-ray background and absorption data it appears that the giant cavity is filled with warm, ionized and dust-poor gas in addition to million K gas. This set of structures must reflect the main events that occurred in the past. It has been suggested that the Cretaceus-Tertiary mass extinction may be due to a gamma-ray burst (GRB) in the massive globular cluster (GC) 47 Tuc during its close encounter with the Sun $\sim$70 Myrs ago. Given the mass, speed and size of 47 Tuc, wherever it crossed the Galactic plane it must have produced at the crossing site significant dynamical effects on the disk stars and IS clouds, and triggered star formation. Interestingly, first-order estimates suggest that the GB dynamics and age could match the consequences of the cluster crossing. Additionally, the giant ionized, dust-free cavity could be related to an intense flux of hard radiation, and dust-gas decoupling after the burst could explain the high variability and pattern of the D/H ratio in the nearby gaseous ISM. Future Gaia data should confirm or dismiss this hypothesis.
Une révolution inachevée An unfinished revolution ? Durkheimism and the Sociology of time
Michel Lallement,Charles Gadea
Temporalités , 2009,
Abstract: L’ uvre de Durkheim, Les formes élémentaires de la vie religieuse, contient une formulation des fondements de la sociologie du temps qui n’a cessé d’alimenter les réflexions de ses successeurs. Toutefois, la notion de temps ne re oit, chez Durkheim, qu’un développement limité. Ce sont plut t ses disciples Hubert et Mauss, ou Halbwachs, qui s’inspirant d’une lecture critique de Bergson, lui donneront davantage d’ampleur et de substance. Partant d’un examen de la manière dont la notion de temps intervient dans les critiques et études de l’Année sociologique, cet article s’efforce de retracer l’émergence de la notion de temps dans la sociologie durkheimienne et d’en situer les positionnements initiaux. Durkheim’s Elementary forms of religious life contain a formulation of the foundations of a sociology of time which has constantly sparked the reflections of his successors. He himself did not develop it much further but his followers, Hubert and Mauss, or Halbwachs, drawing their inspiration from a critical reading of Bergson, gave it more scope and substance. Taking off from the way the notion of time intervenes in the critical notes and studies of L’Année sociologique, this papers attemps to retrace the emergence of the notion of time in the Durkheimian school and to locate its earlier positioning.
Distance to the northern high-latitude HI shells
Lucky Puspitarini,Rosine Lallement
Physics , 2012, DOI: 10.1051/0004-6361/201219284
Abstract: A detailed 3D distribution of interstellar matter in the solar neighborhood is increasingly necessary. As part of a 3D mapping program, we aim at assigning a precise distance to the high-latitude HI gas in particular the northern part (b \geq 55^{circ}) of the shell associated with the conspicuous radio continuum Loop I. This shell is thought to be the expanding boundary of an interstellar bubble inflated and recently reheated by the strong stellar winds of the nearby Scorpius-Centaurus OB. We recorded high-resolution spectra of 30 A-type target stars located at various distances in the direction of the northern part of Loop I. Interstellar NaI 5889-5895 and CaII K-H 3934-3968 {\AA} are modeled and compared with the HI emission spectra from the LAB Survey. About two-thirds of our stellar spectra possess narrow interstellar lines. Narrow lines are located at the velocity of the main, low-velocity Loop 1 HI shell ([-6,+1] km/s in the LSR). Using Hipparcos distances to the target stars, we show that the closest boundary of the b geq+70^{\circ} part of this low-velocity Loop I arch is located at of 98 \pm 6 pc. The corresponding interval for the lower-latitude part (55^{\circ} \leq b \leq 70^{\circ}) is 95-157 pc. However, since the two structures are apparently connected, the lower limit is more likely. At variance with this shell, the second HI structure, which is characterized by LSR Doppler velocities centered at -30 km/s, is NOT detected in any of the optical spectra. It is located beyond 200 parsecs or totally depleted in NaI and CaII. We discuss these results in the light of spherical expanding shells and show that they are difficult to reconcile with simple geometries and a nearby shell center close to the Plane. Instead, this high-latitude gas seems to extend the inclined local chimney wall to high distances from the Plane.
On the Stability of the Interstellar Wind through the Solar System
J. L. Bertaux,R. Lallement
Physics , 2014, DOI: 10.1088/1742-6596/577/1/012004
Abstract: As a follow-up of a recent study, we challenge the claim that the flow of interstellar helium through the solar system has changed substantially over the last decades. We argue that only the IBEX-Lo 2009-2010 measurements are discrepant with older consensus values. Then we show that the probability of the claimed variations of longitude and velocity are highly unlikely (about 1 per cent), in view of the absence of change in latitude and absence of change in the (flow velocity, flow longitude) relation, while random values would be expected. Finally, we report other independent studies showing the stability of Helium flow and the Hydrogen flow over the years 1996-2012, consistent with the seventies earlier determinations of the interstellar flow.
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