211 research outputs found
INCIDENCE AND UNEMPLOYMENT DURATION IN THE OLTENIA REGION
No full textIn this paper the author analyzes how identified factors influence the incidence and duration of unemployment spells in the Oltenia Region. The statistical data were obtained from the National Agency for Employment and the analyzed period is 1st January 2008-31st December 2010.unemployment, duration, hazard, employment
Letter from Dwight Heard to Carl Hayden
No full textLetter from Dwight B. Heard, president and publisher of The Arizona Republican, to Carl T. Hayden about a visit by Stephen Mathe
Study of jet precession, recirculation and vortex breakdown in turbulent swirling jets using LES.
No full textLarge eddy simulations (LES) are used to investigate turbulent isothermal swirling flows with a strong emphasis on vortex breakdown, recirculation and instability behaviour. The Sydney swirl burner configuration is used for all simulated test cases from low to high swirl and Reynolds numbers. The governing equations for continuity and momentum are solved on a structured Cartesian grid, and a Smagorinsky eddy viscosity model with the localised dynamic procedure is used as the sub-grid scale turbulence model. The LES successfully predicts both the upstream first recirculation zone generated by the bluff body and the downstream vortex breakdown bubble. The frequency spectrum indicates the presence of low frequency oscillations and the existence of a central jet precession as observed in experiments. The LES calculations well captured the distinct precession frequencies. The results also highlight the precession mode of instability in the center jet and the oscillations of the central jet precession, which forms a precessing vortex core. The study further highlights the predictive capabilities of LES on unsteady oscillations of turbulent swirling flow fields and provides a good framework for complex instability investigations
Quantum Network Utility Maximization
No full textNetwork Utility Maximization (NUM) is a mathe-matical framework that has endowed researchers with powerful methods for designing and analyzing classical communication protocols. NUM has also enabled the development of distributed algorithms for solving the resource allocation problem, while at the same time providing certain guarantees, e.g., that of fair treatment, to the users of a network. We extend here the notion of NUM to quantum networks, and propose three quantum utility functions - each incorporating a different entanglement measure. We aim both to gain an understanding of some of the ways in which quantum users may perceive utility, as well as to explore structured and theoretically-motivated methods of simultaneously servicing multiple users in distributed quantum systems. Using our quantum NUM constructions, we develop an optimization framework for networks that use the single-photon scheme for entanglement generation, which enables us to solve the resource allocation problem while exploring rate-fidelity tradeoffs within the network topologies that we consider. We learn that two of our utility functions, which are based on distillable entanglement and secret key fraction, are in close agreement with each other and produce similar solutions to the optimization problems we study. While these two utilities place a higher emphasis on end-to-end fidelity, our third utility- based on entanglement negativity - has more favorable mathematical properties, and tends to place a higher value on the rate at which users receive entangled resources. These contrasting behaviors thus provide ideas regarding the suitability of quantum network utility definitions to different quantum applications.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Quantum Computer ScienceCommunication QuTechQID/Wehner Grou
Active immunotherapy of mouse rc 19 and e(female)k1 leukaemias applied after the intravenous transplantation of the tumour cells.
No full textOptimal control of the system of coupled cylinders
No full textWe consider the problem of optimal control of a system consisting of two coupled cylinders. Such a system is a mathe-matical model of the nuclear fuel transfer mechanism at the nuclear power plant reactor. And also, such models are found in various robotic systems. We have obtained optimal control under certain assumptions on a controllable system. © 2018 Author(s).The research was supported by Russian Foundation for Basic Research, project no. 17-08-01385
Architecture for the New Man in the 1950's in Romania. First Glimpse of Communism Build Environment
No full textAbstractAfter the Second World War, the communist regime supported by Moscow started building the New Order and environment for the New Man/Woman. After a few projects that were in line with the Stalinist architecture and had Moscow's approval, the New City tried to find its own way in. The political context had had no direction in constructions until Nikita Khrushchev's discourse in 1954.In the 1950's, communism started building the neighborhood of tomorrow.This project involved two cities: Hunedoara, located in the largest heavy industry area of the country, and Bucharest, the capital of Romania. A young architect, Nicolae Porumbescu, started working on the new project: a building with a cultural function, a theatre seen as the greatest object erected in “Piata infratirii intre popoare” (“The Fraternization between Peoples Square”) in Bucharest, and another similar structure in the main square of Hunedoara. Porumbescu's inspiration for the object was the Bolshoi Theatre in Moscow. The project was developed in the two cities, but at a different scale and relation with the surrounding blocks of flats built for the New Communist Man. The Communist rulers were in search for a new identity of the communist city. The House of the New Man of the 1950's was a pastiche of composite style inspired from classical values. The five-pointed red star ruled in the flamboyant decoration of a hypostyle classical hall. Why does history repeat itself in architecture? Why is the Hellenistic style the only style applied when the idea of dominating the crowds occurs? Nicolae Porumbescu tried to work against the Stalinist style which a few years later, in the 1960's, was to be considered “without utility” because of its decoration, space and urban composition.Why is the classical option always considered the right path of a new ideology of image? Why does one always employ the classical style when one wants to impose oneself? What did Nikita Khrushchev do to the new way? This paper intends to provide answers to such questions
A policy study of the Growth Employment and Redistribution (GEAR) with respect to social development and Adult Basic Education and Training (ABET)
No full textThesis (M.Ed.) - University of Natal, Pietermaritzburg, 2002.This study analyses the Growth Employment and Redistribution (GEAR) strategy with respect to social development, and adult basic education and training (ABET). Since its adoption as official economic policy, replacing the RDP policy in June 1996, the GEAR strategy has been a subject of much debate, and blamed for all social and economic ills, including job losses and high unemployment, poverty, problems in the education, health and welfare system, as well as poor delivery of social services. Motivated by these debates, the author set out to investigate how GEAR provides / does not provide for social development and ABET, both areas of interest to the author. This study investigates this question based only on a review of literature.
While the GEAR strategy makes policy proposals in various aspects of the economy, and sets an economic growth target of 6% per annum by the year 2000, and the creation of 400 000 jobs per annum during the same period (all of which were not met), evidence shows no policy provisions in the GEAR strategy with respect to social development, and ABET. In fact, ABET is not mentioned at all in the GEAR strategy. However, the GEAR strategy makes specific mention of the Human Resources Development Strategy, as a vehicle for addressing education and training problems, thereby improving the skills base of the country. The Human Resources Development Strategy and the National Skills Development Strategy sponsored by the DoE and DoL respectively, all seem to be sound policies. There is however growing evidence that South Africa has developed sound policies which it fails to implement because of lack of capacity and financial resources partly due to the government's acceptance of the neoliberal agenda. This appears to be particularly true with respect to social development and ABET targets in the
Human Resources Development and the National Skills Development strategies.
This study concludes that the GEAR strategy is based on neoliberal assumptions of stimulating foreign investment, export-led economic growth, global trade and global competition, underpinned by the conception that the state must play a minimal role in the economy and is therefore not appropriate for the social development challenges (especially illiteracy) facing South Africa. If progress is to be made in addressing these challenges in South Africa, an alternative to the GEAR strategy must be found
Achievement emotions and arithmetic fluency-Development and parallel processes during the early school years
No full textThis study investigated the developmental trajectories and interrelationships of mathematics-related achieve-ment emotions and arithmetic fluency from first to third grade, and the effects of these on third grade mathe-matics performance. Participants were 232 Norwegian students. Students' emotions and arithmetic fluency were measured four times and mathematics performance once. Applying latent growth curve modeling, developmental patterns of decreasing enjoyment and increasing boredom were observed over time. The mean level of enjoyment remained fairly high, and of both boredom and anxiety quite low. Individual differences were observed in both the initial levels and development of all emotions and arithmetic fluency, indicating differences in developmental trajectories. Only the initial levels and rate of change in arithmetic fluency predicted mathematics performance at the third grade.Peer reviewe
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