Reconciling Theoretical Approaches to Stochastic Patch-occupancy Metapopulation Models

1998 ◽  
Vol 60 (5) ◽  
pp. 955-971 ◽  
Author(s):  
F Gosselin
Keyword(s):  
Patch Occupancy ◽  
Theoretical Approaches ◽  
Metapopulation Models

ON THE METAPOPULATION DYNAMICS OF AUTOCATALYSIS: EXTINCTION TRANSIENTS RELATED TO GHOSTS

2010 ◽  
Vol 20 (04) ◽  
pp. 1261-1268 ◽  
Author(s):  
JOSEP SARDANYÉS ◽  
ERNEST FONTICH
Keyword(s):  
Nonlinear Differential Equations ◽  
New Class ◽  
Local Populations ◽  
Theoretical Approaches ◽  
Spatially Extended ◽  
Approaches To Study ◽  
Diffusion Rates ◽  
Metapopulation Models ◽  
Delayed Transition

One of the theoretical approaches to study spatially-extended ecosystems is given by metapopulation models, which consider fragmented populations inhabiting discrete patches linked by migration. Most of the metapopulation models assume exponential growth of the local populations and few works have explored the role of cooperation in fragmented ecosystems. In this letter, we study the dynamics and the bifurcation scenarios of a minimal, two-patch metapopulation Turing-like model given by nonlinear differential equations with an autocatalytic reaction term together with diffusion. We also analyze the extinction transients of the metapopulations focusing on the effect of coupling two local populations undergoing delayed transition phenomena due to ghost saddle remnants. We find that increasing diffusion rates enhance the delaying capacity of the ghosts. We finally propose the saddle remnant as a new class of transient generator mechanism for ecological systems.

Simple discrete‐time metapopulation models of patch occupancy

Oikos ◽  
2021 ◽  
Vol 130 (2) ◽  
pp. 310-320
Author(s):  
Nathan G. Marculis ◽  
Alan Hastings
Keyword(s):  
Discrete Time ◽  
Patch Occupancy ◽  
Metapopulation Models

Theoretical Approaches to Trauma Adaptation: Beyond PTSD

2009 ◽  
Author(s):  
Tom Pyszczynski ◽  
Crystal Park ◽  
George Bonanno ◽  
Yuval Neria ◽  
Charles Benight
Keyword(s):  
Theoretical Approaches

Еnforcement of Property Rights and Conractual Obligations

2003 ◽  
pp. 83-100 ◽  
Author(s):  
A. Radygin ◽  
R. Entov
Keyword(s):  
Property Rights ◽  
Legal Framework ◽  
Economic Consequences ◽  
Theoretical Approaches ◽  
Contractual Obligations ◽  
Regional Authorities ◽  
Practical Recommendations

The paper deals with theoretical approaches to the problems of property rights and contractual obligations and with analysis of economic consequences of the imperfect enforcement system. In particular, the authors consider Russian experience in the sphere of corporate conflicts. Legal and practical recommendations related to the improvement of legal framework, judiciary reform, executory process and different federal and regional authorities are also presented.

Estimation of welfare costs of inflation: The case of Russia

2019 ◽  
pp. 55-69 ◽  
Author(s):  
Sergey M. Drobyshevskiy ◽  
Natalia V. Makeeva ◽  
Elena V. Sinelnikova-Muryleva ◽  
Pavel V. Trunin
Keyword(s):  
Inflation Targeting ◽  
Empirical Studies ◽  
Welfare Costs ◽  
Economic Agents ◽  
Academic Literature ◽  
Russian Economy ◽  
Theoretical Approaches ◽  
Real Gdp ◽  
Quantitative Estimates ◽  
Positive Effect

This paper is devoted to the estimation of welfare costs of inflation, taking into account the peculiarities of the Russian economy. Theoretical approaches that are used in the literature to analyze the costs of inflation are discussed in the paper. It also provides an overview of the empirical studies of this topic. Research found in academic literature shows that the results of quantitative estimates are extremely sensitive to the choice of the functional form of the money demand equation, as well as to assumptions that are made to simplify the analysis, some of which do not fit Russian data. As a result, we have modified the standard approaches to estimating welfare costs of inflation, taking into account the monetization growth in Russia, and provide quantitative estimates of the magnitude of welfare costs of inflation. The results indicate a significant gain for economic agents in terms of real GDP with a decrease in inflation, which is regarded as a positive effect from the inflation targeting policy.

Value Creating Education Philosophy and the Womanist Discourses of African American Women Educators

2020 ◽  
Vol 9 (SI) ◽  
pp. 102-113
Author(s):  
Paula Estrada Jones
Keyword(s):  
African American ◽  
Public Schools ◽  
Women Educators ◽  
African American Women ◽  
American Women ◽  
The Public ◽  
Education Philosophy ◽  
Theoretical Approaches ◽  
Educational Challenges ◽  
Helping Others

The paper documents the initiative of two African American women educators who have utilized these theoretical approaches to solve the educational challenges in their respective communities. Marva Collins and Corla Hawkins decided to build schools in their own communities after realizing that the public schools were not equipped to educate minorities. The story of these two women demonstrates that individuals can address systemic injustices in their communities. Collins and Hawkins were not wealthy. What they possessed was a passion for helping others. Their example can inspire more individuals to take steps using liberating philosophies, like value-creating education and womanist approaches in education, to transform the state of education in their communities.        

Legitimation of Private Property in the Means of Production in Ukraine

2020 ◽  
Vol 53 (3) ◽  
pp. 64-87
Author(s):  
Volodymyr Reznik ◽  
Oleksandr Reznik
Keyword(s):  
Private Property ◽  
Psychological Adaptation ◽  
Social Recognition ◽  
Private Enterprises ◽  
Private Land ◽  
National Academy Of Sciences ◽  
Theoretical Approaches ◽  
Basic Hypothesis ◽  
Ideological Attitudes ◽  
Means Of Production

This article explores the sources of legitimacy of private property in the means of production in Ukraine. The conceptualization of legitimacy of private property was made by analyzing theoretical approaches to the study of the foundations of private property relations in Western countries. The application of these approaches tests economic utilitarian, psychological, and sociocultural explanations of legitimacy of large and small private enterprises and private land in the process of activation of post-communist transition of Ukrainian society. The basic hypothesis was that the process of legitimation of private property in the means of production proceeds by uniting utilitarian and psychological adaptation with sociocultural agreement of ideological attitudes. This hypothesis was verified with the help of created legitimacy indices by comparison of linear regressions and data of the Institute of Sociology of the National Academy of Sciences (NAS) of Ukraine for 2013 and 2017. The results indicate that the hypothesis has been held true only concerning legitimacy of small private enterprises. They have acquired a moderate extent of legitimacy owing to the fact that besides the factors of adaptation, social recognition has increased at the expense of people who support the multiparty system and the liberal and mixed methods of regulation of the economy. In contrast, the existence of large private enterprises and private land has not acquired the corresponding sociocultural foundation.

МЕТОДОЛОГІЧНІ ПРОБЛЕМИ ДОСЛІДЖЕННЯ СОЦІАЛЬНОГО ІНТЕЛЕКТУ ДІТЕЙ МОЛОДШОГО ШКІЛЬНОГО ВІКУ

1970 ◽  
Vol 8 (1) ◽  
pp. 119-126
Author(s):  
Марина Орап
Keyword(s):  
Social Interaction ◽  
Social Intelligence ◽  
Social Situation ◽  
Verbal Response ◽  
Primary School Children ◽  
School Age ◽  
Theoretical Approaches ◽  
The Social ◽  
Definition Of ◽  
Interpersonal Situations

У  статті  висвітлено  методологічні  та  практичні  засади  вивчення  онтогенезу  соціального  інтелекту. Складність вивчення даного соціально-психологічного феномену пов’язана із дотичністю його  до багатьох явищ, які описують умови успішності соціальної взаємодії особистості. Проаналізовано наявні  теоретичні   підходи   до   визначення   змісту   та   структури  соціального  інтелекту,   до   взаємозв’язку  останнього  з  іншими  видами  інтелекту.  Визначено,  що  дослідження  соціального  інтелекту  молодших  школярів слід здійснювати на основі розуміння останнього як здатності, що виникає на базі комплексу  інтелектуальних,   особистісних,   комунікативних   і   поведінкових   рис,   що   зумовлюють   прогнозування  розвитку  міжособистісних  ситуацій,  інтерпретацію  інформації  і  поведінки,  готовність  до  соціальної  взаємодії і прийняття рішень. Здійснене пілотажне емпіричне дослідження прогностичних можливостей  дітей  молодшого  шкільного  віку  продемонструвало  наявні  позитивні  кореляційні  зв’язки  між  рівнем  розвитку здатності до передбачення найбільш адекватного сценарію розвитку подій у соціальній ситуації  та рівнем розвитку мовленнєвого досвіду. Найбільш тісний взаємозв’язок виявлено між рівнем розвитку  здатності  передбачати  адекватну  вербальну  відповідь  у  ситуації  комунікації  та  рівнем  розвитку  мовленнєвої компетентності та мовленнєвої діяльності дітей молодшого шкільного віку. Таким чином,  були зроблені попередні висновки про наявність взаємозв’язку між мовленнєвим досвідом та прогностичним  можливостями у складі соціального інтелекту дитини молодшого шкільного віку The  article  outlines  the  methodological  and  practical  principles  of  studying  the  ontogenesis  of  social  intelligence. The complexity of studying this socio-psychological phenomenon is associated with its attractiveness to  many  phenomena  that  describe  the  conditions  for  the  successful  social  interaction.  The  existing  theoretical  approaches to the definition of the content and structure of social intelligence, to the interrelationship of it with  other types of intelligence are analyzed. It is determined that research of social intelligence of junior pupils should  be carried out on the basis of the understanding of this kind of intelligencer as an ability that based on a complex of  intellectual, personal, communicative and behavioral features. This complex predetermines the forecasting of the  development  of  interpersonal  situations,  the  interpretation  of  information  and  behavior,  readiness  for  social  interaction  and  decision-making.  The  research  of  the  prognostic  possibilities  of  primary  school  children  demonstrated the positive correlation between the level of development of the ability to predict the most adequate  scenario of the development of events in the social situation and the level of development of speech experience. The  closest relationship is found between the level of development of the ability to provide an adequate verbal response  in the context of communication and the level of development of speech competence and speech activity of children  of junior school age. Thus, was done a conclusion about the existence of a relationship between speech experience  and prognostic possibilities in the social intellect of a child of junior school age.   

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