The stellar coronal X-ray Explorer: STCOEX

The status of the newly born field of stellar X-ray astronomy is considered. The need for further observational capability, the study of stellar surface activity and the development of design criteria for a follow-up mission, with primary emphasis on stellar observations and with general capabilities within the scope of the Explorer program are examined. The criteria which lead to the desired instrumental capabilities are reviewed; and an overview of the proposed instrument and some of its capabilities, as indicated by simulations is presented. Two versions of a trial payload the stellar coronal. Explorer (STCOEX) which meet the observational desirable are developed

Trade disputes involving china and the wto: an institution-based analysis and future trends

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Is Santayana an Untimely Philosopher?

An interesting trend of recent scholarship on Santayana’s thought is focused on his criticism of modernity and brings him together with the major figures of postmodern philosophy, especially with Nietzsche, Heidegger, Derrida, and Rorty. In my opinion, while the criticism of modernity certainly offers a relevant key to understand Santayana’s philosophy, it should be rooted first and foremost in some cultural and philosophical linkages that Santayana himself makes explicit throughout his writings, namely, a classical Latin author such as Lucretius, and a modern author such as Giacomo Leopardi. Answering the question in my title, it seems to me that, ultimately, Santayana is a timely/untimely philosopher, if his concepts of rationality and spirituality can be viewed and understood within the framework labeled by Michel Foucault as epimeleia heautou or cura sui.An interesting trend of recent scholarship on Santayana’s thought is focused on his criticism of modernity and brings him together with the major figures of postmodern philosophy, especially with Nietzsche, Heidegger, Derrida, and Rorty. In my opinion, while the criticism of modernity certainly offers a relevant key to understand Santayana’s philosophy, it should be rooted first and foremost in some cultural and philosophical linkages that Santayana himself makes explicit throughout his writings, namely, a classical Latin author such as Lucretius, and a modern author such as Giacomo Leopardi. Answering the question in my title, it seems to me that, ultimately, Santayana is a timely/untimely philosopher, if his concepts of rationality and spirituality can be viewed and understood within the framework labeled by Michel Foucault as epimeleia heautou or cura sui

Final data reduction and analysis of the AS and E OSO-4 grazing incidence X-ray telescope experiment

Final data analysis of grazing incidence of solar X ray telescope experiment of OSO- 4 satellit

Orchies – Rue Marcel-Delommez

L’opération de diagnostic d’Orchies, sise 11, rue Marcel Delommez a été prescrite suite à une demande de permis de construire pour des logements. Elle se situe sur la parcelle D 2 264, en bordure nord du rempart médiéval, et impacte une surface au sol de 743 m2. Le diagnostic s’est déroulé du mercredi 21 au jeudi 22 janvier 2015. Malgré les 17 % d’ouverture (à travers trois tranchées et trois sondages profonds), le diagnostic s’est avéré négatif. La totalité de la parcelle est recouverte d’un..

A laboratory program to develop improved grazing incidence X-ray optics

Grazing incident double reflection X-ray telescop

Conversion of a Semi-two Lanes Roundabout into a Turbo-roundabout: A Performance Comparison

AbstractIn the last years, as regards the functional design of at-grade intersections, near to classic layouts (signal-controlled junctions, roundabouts, etc.) a new solution has born: the "turbo-roundabout". It is a canalized multilane oval intersection with a non-traversable or partially traversable center island and with a spiral circulatory carriageway. This kind of roundabout is also characterized by a predictable lane use: some direction flows are physically separated by curbs. Several roundabouts with spiraling circular carriageways were built in northern Europe (in particular in Netherlands) and they have further allowed to extend the notable advantages of this functional solution against multilane roundabouts, such as: 1) no lane changing on the circulatory carriageway; 2) no need to yield to traffic flow on more than two lanes; 3) low driving speed along the through movement because of raised lane dividers and, consequently, a high reduction of accident risk. In this paper a careful literature review on turbo-roundabouts is proposed. Furthermore, the Authors examine the potentialities offered by the transformation of an existing semi-two lanes roundabout into a "virtual" configuration of a turbo-roundabout. In particular, they also evaluate and compare the performance parameters in the two configurations by using a microsimulation software. The case study roundabout is placed in the city of Cosenza (Southern Italy) and it is characterized by great problems of congestion during peak hours. Experimental measures of traffic flows (O/D matrixes), critical gaps, queue lengths and approaching and circulating speeds represent input data for calibration procedures. Afterwards, derived calibration parameters are used as input variables for the new configuration of the intersection as a turbo roundabout. The Authors highlight that the conversion of the existing roundabout into a virtual turbo roundabout determine an increase of capacity together with a minimization of the queue lengths