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Coopératives de production : quelle spécificité du rapport social d’activités coopératif à l’aune du rapport salarial ?
Published 2023-07-01“…Three main periods are identified : 1815–1910 with a “cooperative social relationship of activities” as an alternative to the emergence of the wage labor nexus ; 1910–1980 with its assimilation into the wage society ; and from the 1980s onwards with the return of an ideal bypassing wage subordination. …”
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Como Desenvolver Aulas de Matemática Centradas na Resolução de Problemas
Published 2024-12-01Get full text
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Characteristic Analysis of Annual Sediment Transport Modulus of Xijiang River Basin in Guangxi over Last 60 Years
Published 2022-01-01“…Mann-Kendall rank correlation test,Spearman rank correlation test and Mann-Whitney-Pettitt abrupt change point analysis were performed to study the trend and mutation components of the annual sediment transport modulus of the Xijiang River Basin.Then,the kriging interpolation method was used for spatial interpolation in the mean and trend of the annual sediment transport modulus.After a double cumulative curve was drawn,the hydrological analysis method was employed to examine the causes of the changes in the annual sediment transport modulus.The results show that the average annual sediment transport modulus of the Xijiang River Basin increased in the 1960s—1970s but kept decreasing in the 1980s.The multi-year sediment transport modulus drops gradually from west and east to northeast in the 1960s,from outer to central in the 1970s,from northwest and east to south and northeast in the 1980s,from northwest and east to central and northeast in the 1990s,and from east and west to north in 2000—2009.In general,the multi-year average sediment transport modulus of the upper reaches is greater than that of the middle and lower reaches.Without the influence of precipitation change,the variation of the annual sediment transport modulus of the Xijiang River mainly results from human activities affecting the erosion and sediment yield of the basin.The contribution rate of precipitation change to the sediment transport modulus is 6.3%~12.3%,whereas that of human activities is 87.7%~93.7%.…”
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Quantifying Spatiotemporal Dynamics of Solar Radiation over the Northeast China Based on ACO-BPNN Model and Intensity Analysis
Published 2017-01-01“…Research findings revealed that (1) the solar radiation resource in the study region increased from the 1980s to the 2000s and the average annual rate of variation from the 1980s to the 1990s was lower than that from the 1990s to the 2000s and (2) the gains and losses of solar radiation at each level were in different conditions. …”
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Enuresis, a problem to be faced in Primary Health Care due to its educational component
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Auxiliares de classe e a construção do “não lugar” profissional na Educação Infantil
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Évolution de l’urbanisme et exposition au risque cyclonique à Saint-Martin de 1954 à 2017
Published 2022-04-01“…Many neighbourhoods experienced significant growth which started in the late 1980's. However we observe differences in urban planning, a result of social and territorial segregation which exists on the island. …”
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THE NEXUS OF EXTERNAL DEBT, PRIVATE INVESTMENT AND FINANCIAL DEVELOPMENT: EVIDENCE FROM SELECTED SACU COUNTRIES
Published 2023-05-01“… This paper examines the dynamic causal relationship between financial development, external debt and investment in Lesotho, Namibia and Eswatini from 1980–2020 using a multivariate Granger–causality model. …”
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Data-Driven-Based Attribution of Runoff Changes in Tuwei River Basin in the Northern Windy-Sandy Region of Shaanxi
Published 2022-01-01“…The key point in analyzing the attribution of runoff changes is whether the natural runoff process of the basin can be accurately simulated.However,the application accuracy of hydrological models in arid and semi-arid regions of the Loess Plateau is generally not high.Taking the Tuwei River basin in the northern windy-sandy region of Shaanxi in the middle reach of the Yellow River as an example,this paper proposed an improved natural runoff simulation method based on the data-driven approach,so as to quantitatively analyze the effects of climate changes and human activities on runoff changes in the Tuwei River basin.The results show that the annual runoff series in the basin decreased significantly from 1961 to 2015,and there were two abrupt changes in 1979 and 1996,respectively.The annual runoff of the two periods (1980—1996 and 1997—2015) is 25.8% and 47.1% lower than that of the natural period (1961—1979),respectively.The runoff simulation accuracy of the three data-driven methods after improvement rises significantly.Specifically,the improved method proposed by Zhao Wenlin has the highest accuracy,and the Nash-Sutcliffe efficiency coefficient of annual runoff simulation in the natural period is 0.77.Climate change is the main reason for the significant decrease in the runoff between 1980 and 1996 (with a contribution of up to 80.9%).However,from 1997 to 2015,the contribution of climate change and human activities to the decrease in the runoff changed,with the influence of human activities increasing to a proportion of 58.8%.…”
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Cinco nomes, um traçado urbano e dois centros históricos
Published 2025-01-01“…Este artigo analisa as ações no Centro Histórico de João Pessoa entre as décadas de 1980 e 2010. O estudo foca na forma urbana e nas dinâmicas sociais que a moldaram, destacando as lacunas na preservação do patrimônio urbano. …”
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Climate Change and Fruit-Picking Tourism: Impact and Adaptation
Published 2016-01-01“…In this paper, phenological data on the FMD for 45 types of plants in 1980–2012, dates for more than 200 fruit-picking festivals, and data on monthly average air temperature in 1980–2013 were used to assess the impact of CC on FPTA by wavelet and correlation analyses. …”
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