Search results for " format"
showing 10 items of 2156 documents
Manoeuvring in Between: Mapping Out the Transnational Identity of Russian-Speaking Latvians in Sweden and Great Britain
2019
AbstractThe proportion of the Russian-speaking population in Latvia increased dramatically during the Soviet period from 12% in 1935 to 42% in 1990 due to organised labour migration within the Soviet Union. After the collapse of the Soviet Union, especially since the end of the 1990s, many Russian-speaking Latvians have migrated to Western countries. Very little is known about the national identities of these Russian-speaking Latvians. By analysing 30 life histories of Russian-speaking migrants from Latvia in Sweden and Great Britain, this study aims to analyse the transnational identities of Russian-speaking Latvians abroad. The analysis shows that the migrants’ own migration patterns in a…
Noise in ecosystems: a short review
2004
Noise, through its interaction with the nonlinearity of the living systems, can give rise to counter-intuitive phenomena such as stochastic resonance, noise-delayed extinction, temporal oscillations, and spatial patterns. In this paper we briefly review the noise-induced effects in three different ecosystems: (i) two competing species; (ii) three interacting species, one predator and two preys, and (iii) N-interacting species. The transient dynamics of these ecosystems are analyzed through generalized Lotka-Volterra equations in the presence of multiplicative noise, which models the interaction between the species and the environment. The interaction parameter between the species is random …
Open challenges in environmental data analysis and ecological complex systems (a)
2020
Abstract This letter focuses on open challenges in the fields of environmental data analysis and ecological complex systems. It highlights relations between research problems in stochastic population dynamics, machine learning and big data research, and statistical physics. Recent and current developments in statistical modeling of spatiotemporal data and in population dynamics are briefly reviewed. The presentation emphasizes stochastic fluctuations, including their statistical representation, data-based estimation, prediction, and impact on the physics of the underlying systems. Guided by the common thread of stochasticity, a deeper and improved understanding of environmental processes an…
Time evolution of non-lethal infectious diseases: a semi-continuous approach.
2005
A model describing the dynamics related to the spreading of non-lethal infectious diseases in a fixed-size population is proposed. The model consists of a non-linear delay-differential equation describing the time evolution of the increment in the number of infectious individuals and depends upon a limited number of parameters. Predictions are in good qualitative agreement with data on influenza.
ON THE EXISTENCE OF LIMIT CYCLES IN OPINION FORMATION PROCESSES UNDER TIME PERIODIC INFLUENCE OF PERSUADERS
2008
This paper concerns a model of opinion formation in a population of interacting individuals under the influence of external leaders or persuaders, which act in a time periodic fashion. The model is formulated within a general framework inspired to a discrete generalized kinetic approach, which has been developed in Ref. 6. It is expressed by a system of non-autonomous nonlinear ordinary differential equations. The dynamics of such a system is investigated and the existence of a globally asymptotically stable periodic solution is analytically proved in three example cases, each one corresponding to a different quantitative choice of the actions of the persuaders. Equivalently, in three part…
Bargaining for the Spoils of War: Somalia’s Failing Path from War to Peace
2014
ABSTRACTFor more than 20 years, Somalia has experienced state failure. Today, radical political Islam and groups such as al-Shabab with links to al-Qaida are gaining ground. The current federal government is failing to provide public goods, such as security, education, and health, to the population it claims to represent. To date, more than a dozen peace negotiations to end this conflict have failed. The objective of this article is to shed light on why past peace processes have failed. The study of the Mbagathi peace process that preceded the United Nations–led Djibouti peace process can help to better understand the current political stalemate and conflict in Somalia. Moreover, some of th…
Hippocampal Sharp Waves: A Physiological Correlate of LTP?
1988
The irregularly occurring large amplitude hippocampal sharp waves (SPWs) are correlated with synchronous population bursts of CA1-CA3 and subicular pyramidal cells, dentate granule cells and interneurons in all hippocampal fields. We suggest that the SPW-associated neuronal burst is the best candidate for a physiological basis of long-term potentiation (LTP).
Utilizing Informal Formative Assessment and Dialogicity During Reflections on Educational Dialogue in Mathematics
2022
In this study, educational dialogue is explored through informal formative assessment and dialogicity. We enhance the understanding of informal formative assessment and dialogicity by considering their relationship. Even though the interconnection of informal formative assessment and dialogicity is acknowledged, it has not been explicitly examined in research on educational dialogue. The data consists of video-stimulated joint reflections between mathematics student teachers and a teacher educator. The reflections were part of a teacher education program integrated in a mathematics pedagogic course. Conversational analysis was conducted to detect interactional patterns and indicators that e…
Los retos del sistema educativo en España
2011
International audience; A lo largo de las últimas décadas, el sistema educativo español ha cambiado profundamente. Sin embargo, a pesar de los esfuerzos realizados y de las múltiples reformas emprendidas, la eficacia interna y externa del sector sigue siendo pequeña en comparación con otros países de nuestro entorno. Gran parte de los problemas que padece el sector se debe a su escasa diversidad y a su ausencia de diferenciación. A nuestro juicio, organizar el sistema de enseñanza de manera que cada alumno encuentre un lugar en la esfera educativa que le permita adquirir unas cualificaciones a la medida de sus posibilidades y negociables en el mercado de trabajo es el mayor reto al que se e…
Ekumeniczna formacja wyzwaniem i zadaniem Kościołów
2020
Sobór Watykański II, który w świadomości katolickiej zapoczątkował głęboki przełom w myśleniu o Kościele i o realizacji jego posłannictwa w świecie, uczynił ekumenizm jednym z zasadniczych paradygmatów ewangelizacyjnych, a permanentną ekumeniczną formację uznał za ważny paradygmat ekumeny wartości. Soborowy „Dekret o Ekumenizmie Unitatis redintegratio” nadaje ekumenicznej formacji właściwe ramy etyczne: domaga się skutecznego wyrzeczenia się logiki podporządkowywania sobie innych na rzecz logiki szacunku i braterstwa. Ekumeniczna formacja stała się więc szczególnym wyzwaniem dla Kościołów i Wspólnot. Jej zadaniem jest nie tylko przekazywanie odpowiedniego zasobu wiedzy na dany temat, ale ta…