58 research outputs found
47. Φωκας (ΣΠ. Γ.), Οἱ Ἕλληνες εἰς τὴν ποταμοπλοΐαν τοῦ κάτω Δουνάβεως
No full textPanayotopoulos Vassilis. 47. Φωκας (ΣΠ. Γ.), Οἱ Ἕλληνες εἰς τὴν ποταμοπλοΐαν τοῦ κάτω Δουνάβεως. In: Revue des Études Grecques, tome 92, fascicule 436-437, Janvier-juin 1979. p. 291
45. Πανταζοπουλος (Ν. Ι.), Τά «Προνόμια» ὡς πολιτιστικὸς παράγων εἰς τὰς σχέσεις χριστιανῶν - μουσουλμάνων, ἀνάτυπον
No full textPanayotopoulos Vassilis. 45. Πανταζοπουλος (Ν. Ι.), Τά «Προνόμια» ὡς πολιτιστικὸς παράγων εἰς τὰς σχέσεις χριστιανῶν - μουσουλμάνων, ἀνάτυπον. In: Revue des Études Grecques, tome 92, fascicule 436-437, Janvier-juin 1979. p. 290
Nikos Panayotopoulos, Épreuve pénale et consécration sociale négative. Les établissements d'éducation surveillée en Grèce, 1997
No full textBalazs Gabrielle. Nikos Panayotopoulos, Épreuve pénale et consécration sociale négative. Les établissements d'éducation surveillée en Grèce, 1997. In: Actes de la recherche en sciences sociales. Vol. 120, décembre 1997. Violences. p. 70
Panayotopoulos D. et Abraham G. — Formes périodiques de la schizophrénie. Ann. Méd. Ps., 1964, t.l, n° 2, pp. 193-219
No full textPanayotopoulos D. et Abraham G. — Formes périodiques de la schizophrénie. Ann. Méd. Ps., 1964, t.l, n° 2, pp. 193-219. In: Bulletin de psychologie, tome 23 n°281, 1970. p. 316
Simulation of a four sensor probe using a rotating dual sensor probe
No full textIn the current project a rotating dual sensor probe has been designed and fabricated. A set of
measurements were performed using the rotating dual sensor. Analysis on the results occurred, and
it showed that the rotating dual sensor with the supporting algorithm has an acceptable, reliable and
repeatable performance for measurements in multiphase flows
Measurement of Reference Bubble Velocity Vector for a Local 4 Sensor Probe Using Orthogonal High Speed Cameras
No full textIn recent years, there has been an increase in the level of interest shown in making flow rate measurements in multiphase flow. This in part has been brought about by the metering requirements of the oil and natural gas industries. Measuring the volumetric flow rate of each of the flowing components is often required and this is particularly true in production logging applications, where it may be necessary to measure the flow rates of oil and water down hole in vertical and inclined oil wells. Within the University of Huddersfield, work has been undertaken on the study of vertical and inclined multiphase flow. Previous work was based on the use of local, dual-sensor conductance probes to obtain the local axial velocity and volume fraction of the bubbles in multiphase flows. The purpose of this research presented in this paper is to investigate the accuracy with which a 4-sensor probe can measure bubble velocity vectors using two orthogonal high speed cameras.
The probe was manufactured from 0.3mm diameter stainless steel acupuncture needles due to their high level of rigidity. The acupuncture needles were mounted inside a stainless steel tube with an outer diameter of 4mm. A procedure was carried out whereby where all the readings are taken simultaneously from both the cameras and 4-sensor probe. The camera and DAQ setting are made such they were controlled by an external trigger signal that is achieved thought the same circuit that is been used for the probe signal. The velocity vector of the top plane, centre of gravity (COG) and bottom plane of the bubbles were measured using the high speed cameras and compared with the bubble velocity vector obtained from the probe signal. In this paper bubble velocity vector is quantified in term of a polar angle α an azimuthal angle β and a velocity magnitude
Gas volume fraction and velocity profiles: vertical and inclined bubbly air-water flows
No full textUpward inclined gas-liquid flows are frequently encountered in the oil industry and data relating to the local gas volume fraction distribution and the local gas velocity distribution is important, for example, in pressure gradient prediction and in modeling oil well 'blowouts'. In this paper measurements are presented of the local gas volume fraction distribution and the local axial gas velocity distribution which were taken in bubbly air-water flows in an 80 mm diameter pipe which was inclined at angles of 0°, 15° and 30° to the vertical. Qualitative arguments are presented to explain the influence of the liquid superficial velocity on the local gas volume fraction distribution in inclined flow and also to explain the very high axial gas velocities observed towards the upper side of the inclined pipe
Les "grandes écoles" d'un petit pays
No full textStudium im Ausland : der Fall Griechenland.
Obwohl Griechenland nie eine Kolonie war, gehört es in herausragender Weise zu den Ländern, deren Studenten ihr Universitätsstudium im Ausland absolvieren, ein sonst besonders in den neuen Staaten der dritten Welt zu beobachtendes Phänomen. Immer unmittelbarer scheint das Studium an ausländischen Universitäten den Zugang zu angesehenen Posten im heimischen Machtfeld zu determinieren, während die nationalen Einrichtungen sich zunehmend auf niedrigere Ausbildungsgänge, z.B. fur Posten ausführender Organe, fur Techniker, mittlere Angestellte und Gymnasiallehrer, zu beschränken neigen. Der Autor schlägt ein allgemeines Denkmodell zur Neubetrachtung des Universitätsfeldes von marginalen Universitätsfeldern her vor, die sich zu einer Art universitärer Diaspora bei gleichzeitiger Bezugnahme auf das internationale Machtfeld und das internationale Universitätsfeld veranlaßt sehen. Die Analyse der sozialen Determinanten in der Wahl der verschiedenen Gastländer ermöglicht nützliche Aufschlüsse über die dauerhaften Merkmale des universitären und intellektuellen Lebens des Landes und trägt auf diese Weise zum Verständnis der internationalen Kämpfe um den Einfluß auf kultureller Ebene bei.« Grandes Écoles » of a little country.
Although Greece has never been a colony, it ranks high among countries whose students do their university work abroad, which is a feature observed primarily in new developing States. Study abroad is increasingly the key to prestigious jobs in the power field, while the national establishments are most often limited to lower-level training, namely for jobs as executants, technicians, middle management, high-school teachers. The author proposes a general model for rethinking the university field, taking the field of marginal universities which are relegated to a sort of university diaspora, and relating these to both the field of international power and the field of international universities. Analysing the social factors which determine the choice of the different countries enables the author to account for the constant features of the university and intellectual life of the country, and thereby contributes to an understanding of the international struggle for domination in the area of culture.Les « grandes écoles » d'un petit pays
Bien qu'elle n'ait jamais été une colonie, la Grèce se range au premier rang des pays dont les étudiants réalisent leur cursus universitaire à l'étranger, ce qui est un trait surtout observable dans les nouveaux États en cours de développement. Le passage par les établissements étrangers tend à commander de plus en plus étroitement l'accès aux postes prestigieux du champ du pouvoir, tandis que les établissements nationaux se limitent le plus souvent à des formations inférieures, à savoir des postes d'exécution, de techniciens, de cadres moyens, d'enseignants du secondaire. L'auteur propose un modèle général pour repenser le champ universitaire à partir de champs universitaires marginaux qui sont contraints à une sorte de diaspora universitaire, dans une double mise en relation avec le champ du pouvoir international d'une part et avec le champ universitaire international d'autre part. L'analyse des déterminants sociaux des choix des différents pays permet de rendre compte des caractéristiques permanentes de la vie universitaire et intellectuelle du pays, et, par là, contribue à la compréhension des luttes internationales pour la domination en matière culturelle.Estudios en el extranjero : el caso de Grecia.
Aunque Grecia nunca haya sido una colonia, se destaca entre los países cuyos estudiantes realizan estudios universitarios en el extranjero, rasgo que se observa sobre todo en los nuevos Estados en vías de desarrollo. El paso por los establecimientos extranjeros tiende a determinar, cada vez mas rigurosamente, el acceso a los puestos de prestigio en el campo del poder, mientras los establecimientos nacionales se limitan, en la mayoría de los casos, a las formaciones inferiores, a saber : puestos de ejecución, personal técnico y administrativo, docentes de enseñanza media. El autor propone un modelo general para estudiar el campo universitario desde una nueva perspectiva : a partir de los campos universitarios marginales que se ven forzados a una especie de diáspora universitaria, en un doble sistema de relaciones, con el campo del poder internacional y con el campo universitario internacional. El análisis de los determinantes sociales de las opciones de los diferentes países permite dar cuenta de las características permanentes de la vida universitaria e intelectual del país en cuestión, contribuyendo así a comprender las luchas internacionales por la dominación en materia cultural.Panayotopoulos Nikos. Les "grandes écoles" d'un petit pays . In: Actes de la recherche en sciences sociales. Vol. 121-122, mars 1998. Les ruses de la raison impérialiste. pp. 77-91
Meanders and Motzkin Words
No full textWe study the construction of closed meanders and systems of closed meanders, using Motzkin words with four letters. These words are generated by applying binary operation on the set of Dyck words. The procedure is based on the various kinds of intersection of the meandric curve with the horizontal line
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