Search Results - (Author, Cooperation:Révész)

2025-06-03

La presente publicación pretende ofrecer una mirada amplia y plural acerca de la cuestión del desarrollo rural en la sierra peruana sobre la base del trabajo realizado en el marco de la Red de Investigación sobre Desarrollo Rural de la Sierra, formada por investigadores del Instituto de Estudios Peruanos (IEP), el Centro de Investigación y Promoción del Campesinado (CIPCA) y el Grupo de Análisis para el Desarrollo (GRADE); y auspiciada por el Consorcio de Investigación Económica y Social (CIES).

Soziologie, Anthropologie ; Sociology & anthropology ; mercados agrícolas ; Entwicklungsländersoziologie, Entwicklungssoziologie ; Sociology of Developing Countries, Developmental Sociology ; Peru ; ländliche Entwicklung ; Landwirtschaft ; Agrarproduktion ; Entwicklungspolitik ; regionale Entwicklung ; Dezentralisation ; Kommunalverwaltung ; Andenraum ; rural development ; agriculture ; agricultural production ; development policy ; regional development ; decentralization ; municipal administration ; Andean Region ; 11000

Forschungsbericht, research report

article

2009

Empirische Forschung ; Schwierigkeitsgrad ; Experiment ; Methodik ; Foto ; Morphosyntax ; Vergleichende Analyse ; Fremdsprachenunterricht ; Zweitsprachenerwerbsforschung ; Englischunterricht ; Aufgabenstellung ; Effizienz ; Umwandlung ; Ungarn

Studies in second language acquisition, Bd. 31 (2009) H. 3, S. 437-470, 0272-2631

English

Tabellen 5, Anmerkungen

article

2015

Empirische Forschung ; Korrektur ; Feedback ; Fremdsprachenunterricht ; Englischunterricht ; Griechenland

The modern language journal, Bd. 99 (2015) H. 2, S. 263-282, 0026-7902

English

Anhang, Anmerkungen 1, Tabellen 5

article

2022

Auslandsbeziehungen ; Technische Hochschule ; Ausland ; China

Thelen, Gabriele (Hrsg.); u.a., Handbuch China-Kompetenzen. Best-Practice-Beispiele aus deutschen Hochschulen., Bielefeld: transcript (2022), S. 141-146, 978-3-8376-5975-7

978-3-8394-5975-1

German

article

2022

Auslandsbeziehungen ; Studium ; Hochschule ; Technische Hochschule ; Studentenschaft ; Ausland ; Berlin ; China

Thelen, Gabriele (Hrsg.); u.a., Handbuch China-Kompetenzen. Best-Practice-Beispiele aus deutschen Hochschulen., Bielefeld: transcript (2022), S. 189-194, 978-3-8376-5975-7

978-3-8394-5975-1

German

book

1985

Sozialer Konflikt ; Krieg ; Vergangenheit ; Freiheit ; Partei ; Politisches Handeln ; Revolution ; Studentenbewegung ; Jugendbewegung ; Polizei ; Jugendlicher ; Osteuropa ; Sowjetunion

German

Anmerkungen 460

book

1981

Hochschullehrer ; Hochschule ; Student ; Sozialistische Staaten

German

article

2013

Empirische Forschung ; Hörverstehen ; Fortgeschrittenenunterricht ; Text ; Englisch als Zweitsprache

Studies in second language acquisition, Bd. 35 (2013) H. 1, S. 31-65, 0272-2631

English

Anmerkungen 1, Literaturangaben, Tabellen 3

book

2005

Bildung ; Regionale Disparität ; Telekommunikation ; Wohnungsversorgung ; Gesundheitsversorgung ; Infrastruktur ; Verkehr ; Ungarn

English

article

2018

Empirische Forschung ; Aufmerksamkeit ; Test ; Grammatik ; Sprechen ; Englisch als Zweitsprache ; Schreiben

The modern language journal, Bd. 102 (2018) H. 3, S. 557-577, 0026-7902

English

Anhang, Tabellen 9

article

2015

Fragebogen ; Reliabilität ; Validität ; Sekundarbereich ; Schüler ; Messverfahren ; Sportunterricht ; Kapazität ; Jugendlicher ; Ungarn

Research quarterly for exercise and sport, Bd. 86 (2015) H. Suppl. 1, S. S74-S81, 0270-1367

2168-3824

English

2018-06-20

National Academy of Sciences

0027-8424

1091-6490

Biology

Medicine

Natural Sciences in General

2014-04-12

Nature Publishing Group (NPG)

0028-0836

1476-4687

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

Calibration ; Carbon Dioxide/analysis/economics ; Costs and Cost Analysis ; Ecosystem ; Environmental Policy/*economics/trends ; Food Supply/statistics & numerical data ; Global Warming/*economics/prevention & control ; *Models, Economic ; Risk Assessment ; Uncertainty

2018-04-07

American Chemical Society (ACS)

1535-3893

1535-3907

Chemistry and Pharmacology

1089-7550

AIP Digital Archive

Physics

We have employed 16O(α,α)16O oxygen resonance measurement and transmission electron microscopy to study the oxidation and reduction of copper oxide thin films. The in- and out-diffusion of oxygen-induced oxygen concentration variations and microstructural changes in the films were monitored. The study of reduction was carried out by annealing CuO and Cu4O3 thin films in vacuum. Dark-field microscopic images show that isolated and large Cu2O grains emerge from the small CuO and Cu4O3 grain matrices. The growth of Cu2O grains in both CuO and Cu4O3 matrices has been measured to be linear with time, and have activation energies 1.1 and 0.7 eV, respectively. The main controlling mechanism to the discontinuous morphology of the Cu2O grain growth is the migration of the phase boundaries between the oxides induced by oxygen out-diffusion along the moving boundary. An oxygen in-diffusion study was performed by annealing Cu2O and Cu4O3 in an oxygen ambient. The CuO phase nucleates randomly and rapidly in both Cu2O and Cu4O3 matrices. The small grain growth rate of CuO suggests that nucleation rather than grain growth is the predominant event during oxidation. The kinetics study of the reduction and oxidation of copper oxides shows that the two processes are asymmetrical and the latter is faster.

Electronic Resource

1089-7550

AIP Digital Archive

Physics

Silicon-on-insulator structures obtained by single-step implantation of oxygen followed by high temperature annealing were studied by K-band electron spin resonance (ESR) at 4.3–31 K. The spectrum has a strong line at g=2.0059±0.0001 with a spin density of 7.1×1013 cm−2. Various features indicate that it is very similar to that characteristic of dangling Si-bonds (DBs) in a-Si but different from the ESR signal of the Pb center associated with single-crystal-Si/SiO2 interfaces. Irradiation by γ rays to a dose of 1 Mrad(Si) resulted in a 2.5-fold increase in DB density and in the appearance of a new, anisotropic signal of spin density 1.1×1012 cm−2. The latter signal is similar to that originating from a shallow donor in Si, of axial symmetry and preferentially aligned along [001]. It is tentatively assigned to an oxygen-related double donor in Si regions close to the Si/SiO2 interface and/or in the buried oxide. These donors are not generated by irradiation; rather, their ionization state is altered through band bending tuning resulting from irradiation-induced charges in the oxide.

Electronic Resource

1089-7550

AIP Digital Archive

Physics

The interactions of deuterium gas (D2) with implantation-formed Si-SiO2-Si structures were investigated in the temperature range 500–1000 °C using nuclear-reaction analysis. At 600 °C and above there is substantial permeation of D through the overlying Si layer, and this D becomes stably bound within the buried SiO2. The reactions within the implantation-formed oxide differ significantly from those in thermal oxides and are characterized by two distinct time regimes. In the first regime there is a rapid transient reaction which, at least at 600 °C, is controlled by permeation through the Si overlayer. After the initial transient there is a much slower reaction within the oxide, prominent at 700 °C and higher, which is controlled by a reaction barrier. The results indicate that the implantation-formed oxides contain more numerous hydrogen-reactive sites than do silica or thermal oxides on Si, and further that the number of these sites is substantially increased by Si epitaxial deposition. Deuterium permeation through the Si overlayer was used to determine the permeability of hydrogen in Si at 600 °C for the first time.

Electronic Resource

1089-7690

AIP Digital Archive

Physics

Chemistry and Pharmacology

The photochemistry of adsorbed CH3Cl on clean and potassium-dosed Pd(100) surfaces has been studied by illumination with low-intensity UV light from a high-pressure Hg lamp. The effects of illumination were established by post-irradiation thermal desorption, Auger and photoelectron spectroscopic measurements. Evidences are presented for photodissociation of the C–Cl bond to give surface bound methyl group coadsorbed with chlorine. The thermal decomposition of the surface methyl is accompanied by desorption of methane, and small amounts of ethane and ethylene. The presence of preadsorbed potassium greatly enhanced the extent of photodissociation of the C–Cl bond. The efficiency of potassium adatoms depended on its amount, i.e., on the work function of the coadsorbed systems. From the study of the wavelength dependence it is concluded that in the photodissociation of CH3–Cl the optical excitation of the substrate to produce photoelectrons plays a dominant role.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

12C(α,α)12C, 16O(α,α)16O resonances and the 16O(3He,α)15O nuclear reaction in situ analysis have been employed to study the influence of carbon on the reduction of CuO to Cu2O. Significant oxygen loss from CuO starts in the presence of carbon at 250 °C. During in situ annealing of a CuO film, CO2 was detected by mass spectrometry. The combination of carbon and oxygen atoms to form CO2 at the carbon/copper oxide interface is the limiting step to the enhanced oxygen loss rate from CuO thin films.

Electronic Resource

1077-3118

AIP Digital Archive

Physics

Thermal and ion beam induced reactions in Ni thin films on BP(100) have been investigated. For thermally annealed samples the reaction of the Ni layer on BP started at temperatures between 350 and 400 °C and the formation of the crystalline phase corresponding to a composition of Ni4BP was observed at 450 °C. It was observed that oxygen in the Ni layer could retard the progress of the reaction. The full reaction of the Ni layer with BP induced by energetic heavy ion bombardments (600 keV Xe) was observed at 230 °C. The crystalline phase has the same composition and x-ray diffraction pattern for both thermal and ion-induced reactions.

Electronic Resource