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OALib Journal期刊

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匹配条件: “Brinkman” ,找到相关结果约157条。
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Town, village and bush: war and cultural landscapes in south-eastern Angola (1966-2002)
Brinkman, Inge
Afrika Focus , 2012,
Abstract: In most of the literature on the subject, urban and rural areas are presented as real physical entities that are geographically determined. Obviously such an approach is important and necessary, but in this contribution I want to draw attention to ‘the urban’ and ‘the rural’ as ideas, as items of cultural landscape rather than as physical facts. This will result both in a history of ideas and a social history of the war in Angola as experienced by civilians from the south-eastern part of the country. The article is based on a case-study that deals with the history of south-east Angola, an area that was in a state of war from 1966 to 2002. In the course of the 1990s I spoke with immigrants from this region who were resident in Rundu, Northern Namibia, mostly as illegal refugees. In our conversations the immigrants explained how the categories ‘town’ and ‘country’ came into being during colonialism and what changes occurred after the war started. They argued that during the war agriculture in the countryside became well-nigh impossible and an opposition between ‘town’ and ‘bush’ came into being that could have lethal consequences for the civilian population living in the region. This case-study on south-east Angola shows the importance of a historical approach to categories such as ‘urbanity’ and ‘rurality’ as such categories may undergo relatively rapid change – in both discourse and practice.
Nooit in ruste. De bewogen middeleeuwen van Herman Pleij
Brinkman, Herman
Neerlandistiek.nl , 2009,
Abstract:
Oude en nieuwe filologie bij Herman Pleij
Brinkman, Herman
Neerlandistiek.nl , 2009,
Abstract:
Nonlocal Cooper pair Splitting in a pSn Junction
M. Veldhorst,A. Brinkman
Physics , 2011, DOI: 10.1103/PhysRevLett.105.107002
Abstract: Perfect Cooper pair splitting is proposed, based on crossed Andreev reflection (CAR) in a p-type semiconductor - superconductor - n-type semiconductor (pSn) junction. The ideal splitting is caused by the energy filtering that is enforced by the bandstructure of the electrodes. The pSn junction is modeled by the Bogoliubov-de Gennes equations and an extension of the Blonder-Tinkham-Klapwijk theory beyond the Andreev approximation. Despite a large momentum mismatch, the CAR current is predicted to be large. The proposed straightforward experimental design and the 100% degree of pureness of the nonlocal current open the way to pSn structures as high quality sources of entanglement.
Electron-hole coupling in high-Tc cuprate superconductors
A. Brinkman,H. Hilgenkamp
Physics , 2005, DOI: 10.1016/j.physc.2005.03.011
Abstract: From recent Hall effect measurements and angle-resolved photo-emission spectroscopy the interesting picture emerges of co-existing hole- and electron-like quasiparticle bands, both in electron- and hole-doped superconducting cuprates. We reflect on the idea that bosonic electron-hole pairs may be formed in the cuprates and on the possibility that these pairs undergo Bose-Einstein condensation. The relevance to high-Tc superconductivity in the cuprates will be discussed.
A Survey of Flow Cytometry Data Analysis Methods
Ali Bashashati,Ryan R. Brinkman
Advances in Bioinformatics , 2009, DOI: 10.1155/2009/584603
Abstract: Flow cytometry (FCM) is widely used in health research and in treatment for a variety of tasks, such as in the diagnosis and monitoring of leukemia and lymphoma patients, providing the counts of helper-T lymphocytes needed to monitor the course and treatment of HIV infection, the evaluation of peripheral blood hematopoietic stem cell grafts, and many other diseases. In practice, FCM data analysis is performed manually, a process that requires an inordinate amount of time and is error-prone, nonreproducible, nonstandardized, and not open for re-evaluation, making it the most limiting aspect of this technology. This paper reviews state-of-the-art FCM data analysis approaches using a framework introduced to report each of the components in a data analysis pipeline. Current challenges and possible future directions in developing fully automated FCM data analysis tools are also outlined.
The spectrum of accidental childhood poisoning in the Caribbean
Martin,Thomas C.; Brinkman,William;
Revista Panamericana de Salud Pública , 2002, DOI: 10.1590/S1020-49892002001100004
Abstract: objective. to assess accidental poisoning in children in the caribbean country of antigua and barbuda, including the incidence, the types of substances ingested, the age of the children involved, and the clinical outcomes. the results from antigua and barbuda were compared with the results of other reports from the english-speaking caribbean and from the united states of america. design and methods. we performed a retrospective review of the charts of all patients less than 13 years old admitted to the children's ward at holberton hospital in antigua for accidental poisoning between march 1989 and march 1999. those data were compared with data from earlier reports from barbados, guyana, jamaica, and the united states of america. results. in antigua and barbuda there were 255 hospital admissions for accidental poisoning among children below 13 years old over that 10-year period. of the 255 ingestions, 115 of them (45%) were in 1-year-old children, 69 (27%) were in 2-year-old children, and 26 (10%) were in 3-year-old children. these proportions in antigua and barbuda are similar to the age patterns seen in the other countries with which we made comparisons. in antigua and barbuda there was an annual average of 26 hospital admissions for poisoning for the roughly 20 000 children below 13 years of age, for a rate of 1.3 per 1 000. in comparing the patterns of childhood poisoning in all the countries we studied, we found that, as economic levels rose, there was a shift in the substances ingested, with hydrocarbon and plant ingestions decreasing and chemical and medication ingestions increasing. conclusions. there is an increasing variety and complexity of poisonous substances ingested as economic conditions improve. this trend would make the establishment of a poison control center for the english-speaking caribbean a logical step.
The spectrum of accidental childhood poisoning in the Caribbean
Martin Thomas C.,Brinkman William
Revista Panamericana de Salud Pública , 2002,
Abstract: Objective. To assess accidental poisoning in children in the Caribbean country of Antigua and Barbuda, including the incidence, the types of substances ingested, the age of the children involved, and the clinical outcomes. The results from Antigua and Barbuda were compared with the results of other reports from the English-speaking Caribbean and from the United States of America. Design and Methods. We performed a retrospective review of the charts of all patients less than 13 years old admitted to the Children's Ward at Holberton Hospital in Antigua for accidental poisoning between March 1989 and March 1999. Those data were compared with data from earlier reports from Barbados, Guyana, Jamaica, and the United States of America. Results. In Antigua and Barbuda there were 255 hospital admissions for accidental poisoning among children below 13 years old over that 10-year period. Of the 255 ingestions, 115 of them (45%) were in 1-year-old children, 69 (27%) were in 2-year-old children, and 26 (10%) were in 3-year-old children. These proportions in Antigua and Barbuda are similar to the age patterns seen in the other countries with which we made comparisons. In Antigua and Barbuda there was an annual average of 26 hospital admissions for poisoning for the roughly 20 000 children below 13 years of age, for a rate of 1.3 per 1 000. In comparing the patterns of childhood poisoning in all the countries we studied, we found that, as economic levels rose, there was a shift in the substances ingested, with hydrocarbon and plant ingestions decreasing and chemical and medication ingestions increasing. Conclusions. There is an increasing variety and complexity of poisonous substances ingested as economic conditions improve. This trend would make the establishment of a poison control center for the English-speaking Caribbean a logical step.
Crossed Andreev reflection in diffusive contacts
A. Brinkman,A. A. Golubov
Physics , 2006, DOI: 10.1103/PhysRevB.74.214512
Abstract: Crossed Andreev reflection in multiterminal structures in the diffusive regime is addressed within the quasiclassical Keldysh-Usadel formalism. The elastic cotunneling and crossed Andreev reflection of quasiparticles give nonlocal currents and voltages (depending on the actual biasing of the devices) by virtue of the induced proximity effect in the normal metal electrodes. The magnitude of the nonlocal processes is found to scale with the square of the barrier transparency and to decay exponentially with interface spacing. Nonlocal cotunneling and crossed Andreev conductances are found to contribute equally to the nonlocal current, which is of relevance to the use of normal metal-superconducting heterostructures as sources of entanglement.
Coherent effects in double-barrier Josephson junctions
A. Brinkman,A. A. Golubov
Physics , 1999, DOI: 10.1103/PhysRevB.61.11297
Abstract: The general solution for ballistic electronic transport through double-barrier Josephson junctions is derived. We show the existence of a regime of phase-coherent transport in which the supercurrent is proportional to the single barrier transparency and the way in which this coherence is destroyed for increasing interlayer thickness. The quasiparticle dc current at arbitrary voltage is determined.
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