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  • 1
    Electronic Resource
    Electronic Resource
    Neurochemical research 24 (1999), S. 1067-1074 
    ISSN: 1573-6903
    Keywords: Adenosine A2 receptors ; NECA binding ; guanine nucleotides ; glutamate analog ; cAMP ; chicks
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Binding properties of the subtypes of adenosine A2 receptors in membrane preparations and the effects of adenosine receptor ligands on cAMP accumulation in slices from the optic tectum of neonatal chicks have been investigated. [3H]2-[4-(2-p-carboxyethyl)phenylamino]-5'-N-ethylcarboxaminoadenosine (CGS 21680), a selective ligand for adenosine A2a receptors, did not bind to optic tectal membranes, as observed with rat striatal membranes. CGS 21680 also did not induce cyclic AMP accumulation in optic tectum slices. However, 5'-N-ethylcarboxamidoadenosine (NECA), 2-chloro-adenosine or adenosine induced a 2.5- to 3-fold increase on cyclic AMP accumulation in this preparation. [3H]NECA binds to fresh non-washed-membranes obtained from optic tectum of chicks, displaying one population of binding sites, which can be displaced by NECA, 8-phenyltheophylline, 2-chloro-adenosine, but is not affected by CGS 21680. The estimated KD value was 400.90 ± 80.50 nM and the Bmax was estimated to be 2.51 ± 0.54 pmol/mg protein. Guanine nucleotides, which modulate G-proteins activity intracellularly, are also involved in the inhibition of glutamate responses by acting extracellularly. Moreover, we have previously reported that guanine nucleotides potentiate, while glutamate inhibits, adenosine-induced cyclic AMP accumulation in slices from optic tectum of chicks. However, the guanine nucleotides, GMP or GppNHp and the metabotropic glutamate receptors agonist, 1S,3R-ACPD did not alter the [3H]NECA binding observed in fresh non-washed-membranes. Therefore, the adenosine A2 receptor found in the optic tectum must be the adenosine A2b receptor which is available only in fresh membrane preparations, and its not modulated by guanine nucleotides or glutamate analogs.
    Type of Medium: Electronic Resource
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  • 2
    s.l.: PRME Regional Chapter Brazil, UNDP Office Brazil
    Publication Date: 2018-01-19
    Description: The aim of this paper is to create an indicator that compares the efficiency of countries in converting economic complexity into human development through the Data Envelopment Analysis (DEA) method and econometric validation. The DEA will not only enable comparisons of efficiency across countries, but will also enable the creation of a global indicator and social efficiency rankings.
    Description: O objetivo deste trabalho é criar um indicador que compare a eficiência dos países na conversão da complexidade econômica em desenvolvimento humano através do método de análise de envolvimento de dados (DEA) e validação econométrica. A DEA não só permitirá comparações de eficiência entre países, mas também permitirá a criação de um indicador global e rankings de eficiência social.
    Keywords: O3 ; O4 ; ddc:330 ; Economic Complexity ; Human Development ; Data Envelopment Analysis
    Language: English
    Type: doc-type:conferenceObject
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  • 3
    São Carlos: Universidade Federal de São Carlos | ZBW - Deutsche Zentralbibliothek für Wirtschaftswissenschaften, Leibniz-Informationszentrum Wirtschaft Kiel, Hamburg
    Publication Date: 2020-04-24
    Description: Economic growth is not the unique factor to explain human development. Due to that many authors have prioritized studies to measure the Human Development Index. However, these indices do not analyze how Economic Complexity can increase Human Development. The aim of this paper is to determine the efficiency of a set of nations from Latin America and Asia, to measure a country’s performance in converting Economic Complexity into Human Development, between 2010 and 2014. The method used was Data Envelopment Analysis (DEA), through the Variable Returns of Scale (VRS) Model and Window Analysis. Results showed in 2014, all Asian countries were efficient except China and the Philippines, and Cuba was the benchmark for inefficient countries. Window Analysis showed Japan, Republic of Korea and Singapore were efficient over time. This result confirms the initial hypothesis of this article: the more complex countries are more efficient in generating Human Development.
    Description: Article accepted for publication in the journal Gestão & Produção.
    Description: O crescimento econômico não é o único fator que explica o desenvolvimento humano. Neste aspecto, índices sobre a qualidade de vida têm sido recorrentes na literatura. Entretanto, estes índices não analisam como a complexidade econômica é convertida em desenvolvimento humano. O objetivo deste artigo é mensurar a eficiência dos países latino americanos e asiáticos em converter complexidade econômica em desenvolvimento humano, entre 2010 e 2014. O método utilizado foi o Data Envelopment Analysis (DEA), por meio do modelo de Retornos Variáveis à Escala (BCC) e Análise de Janela. Os resultados demonstraram que, em 2014, todos os países asiáticos foram eficientes, exceto a China e Filipinas. Neste ano, Cuba foi o país que mais serviu de benchmark para os países ineficientes. A análise em janela demonstrou que apenas Japão, Coréia do Sul e Singapura se mantiveram eficientes ao longo do tempo. Este resultado confirma a hipótese inicial deste artigo: economias mais complexas são mais eficientes em gerar desenvolvimento humano.
    Keywords: O15 ; O32 ; ddc:330 ; Data Envelopment Analysis (DEA) ; Window Analysis ; Economic Complexity ; Human Development
    Language: English
    Type: doc-type:article
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