853 research outputs found
A EXPANSÃO CAPITALISTA NOS TERRITÓRIOS: UMA REFLEXÃO A PARTIR DO MODELO DE OFERTA ILIMITADA DE MÃO DE OBRA
O estudo busca contribuir com as diferentes perspectivas em relação à ótica do desenvolvimento regional, com enfoque territorial em suas diversas escalas. Além disto, discute brevemente as definições de território, globalização e as suas territorialidades dentro do contexto econômico mundial, determinada pela expansão do capitalismo nos territórios. O texto proporciona uma breve contextualização em relação ao modelo de oferta ilimitada de mão de obra, proposto por Arthur Lewis, o qual conquistou prêmio Nobel de Economia em 1979, que tratou do processo de internacionalização do capital. Para a realização da pesquisa, foram utilizados materiais bibliográficos correspondentes às definições de território, globalização, territorialidades, desenvolvimento regional e internacionalização do capital sob a ótica do modelo de oferta ilimitada de mão de obra. Por fim, serão evidenciados os principais determinantes do atual contexto econômico mundial, no que tange o desenvolvimento regional e, os efeitos da internacionalização do capital sobre o processo de formação dos territórios, bem como suas escalas de análise, as quais são resultantes de (des)interações e de situações conflitantes e contraditórias nas últimas décadas
FINTECH E O DIREITO DO CONSUMIDOR
A proposta do trabalho tem como objetivo uma análise sobre as Fintechs e seu ambiente virtual ensejador de controvérsias estabelecidos a respeito da relação de consumo virtual, o qual estão relacionados ao mecanismo e meio, pelo qual a relação jurídica se efetiva - internet e softwares O rápido avanço tecnológico não refletiu a efetiva regulamentação da matéria e sobretudo um desenvolvimento jurisprudencial. Para o estudo foi adotado o sistema de referência baseado na teoria dos princípios de Humberto Ávila o método de abordagem científica foi o dedutivo e dialético que se desenvolveu através do procedimento histórico e o funcionalista.
Population and railways in Portugal, 1801-1930
Portuguese historiography has mostly adopted a pessimistic view regarding the contribution of the railways to the development of country. Yet, railway access helped to increase population concentration and economic development, favoring migration into towns, the growth of pre-existing urban centers, and the emergence of new centers. But railways tended to be more beneficial to regions that were already prosperous and to aggravate the conditions unfavorable to development in areas with greater structural weaknesses
Ambiente de transición
Resulta difícil definir exactamente cuál es el alcance de lo que llamamos ambientes de transición y cuáles son sus límites, ya que la interacción entre la descarga de sedimentos acarreados desde el continente hacia las zonas costeras y su redistribución en los sectores cercanos, abarcan una enorme cantidad de interacciones no simples de clasificar. Estos ámbitos paleogeográficos son de enorme impacto en la naturaleza desde diferentes aspectos como el geomorfológico, biológico, hidrogeológico, sedimentológico, estratigráfico y por supuesto la aplicación de la resultante de todos estos aspectos en la geología del petróleo, la hidrogeología, la geotécnia, geoturismo y muchos otros aspectos de la vida humana. ¿Cuál es la medida en la que los factores externos o la dinámica propia de los ambientes de transición son los responsables de su organización a diferentes escalas? En el esquema de la Figura 1 se muestra la mayoría de los ambientes sedimentarios relacionados con áreas o sistemas de transición, obtenido de Boyd et al. (1992). Dentro de esta gran diversidad de ambientes pasaremos a describir cuales son las líneas de investigación que actualmente se están trabajando para la aplicación de los conocimientos de la sedimentología y estratigrafía en la prospección y desarrollo de los hidrocarburos.Fil: Arregui, Carlos Daniel. Universidad Nacional del Comahue; ArgentinaFil: de Moraes Lima Silveira, Miguel. Petrobras Argentina S.a; ArgentinaFil: Cuadrado, Diana Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; ArgentinaXVI Reunión Argentina de SedimentologíaGeneral RocaArgentinaAsociación Argentina de SedimentologiaUniversidad Nacional de Río Negr
Relationship between emotion and health: a two-way street
Emotional reactions impact on people's health and quality of life. With the advent of neuroscience in the 1990s, much research has focused on the relationship between neural circuits and emotional reactions. In this sense, we have identified a 2031% growth in research linking emotions and health between 1990 and 2022. Using the Text mining tool called "Biotext Tools", we performed a literature search, focusing on diseases of old age and covid-19. Emotion molecules (EMs), produced by the endocrine system, impact the homeostasis of the body, affecting the biological balance of the body. We related the EMs with diseases of the elderly and Covid-19, in order to analyze the impact of emotional states on the development and treatment of these pathologies. To this end, the bidirectional relationship between anxiety, depression, heart disease, stroke, and Alzheimer's and Parkinson's diseases was analyzed. Finally, Coronavirus severity and mortality levels were related to cortisol, testosterone, and serotonin levels
The “Hypertension Approaches in the Elderly: a Lifestyle study” multicenter, randomized trial (HAEL Study): rationale and methodological protocol
Background: Hypertension is a clinical condition highly prevalent in the elderly, imposing great risks to
cardiovascular diseases and loss of quality of life. Current guidelines emphasize the importance of
nonpharmacological strategies as a first-line approach to lower blood pressure. Exercise is an efficient lifestyle tool
that can benefit a myriad of health-related outcomes, including blood pressure control, in older adults. We herein
report the protocol of the HAEL Study, which aims to evaluate the efficacy of a pragmatic combined exercise
training compared with a health education program on ambulatory blood pressure and other health-related
outcomes in older individuals.
Methods: Randomized, single-blinded, multicenter, two-arm, parallel, superiority trial.
A total of 184 subjects (92/center), ≥60 years of age, with no recent history of cardiovascular events, will be
randomized on a 1:1 ratio to 12-week interventions consisting either of a combined exercise (aerobic and
strength) training, three times per week, or an active-control group receiving health education intervention,
once a week. Ambulatory (primary outcome) and office blood pressures, cardiorespiratory fitness and
endothelial function, together with quality of life, functional fitness and autonomic control will be measured
in before and after intervention.
Discussion: Our conceptual hypothesis is that combined training intervention will reduce ambulatory blood
pressure in comparison with health education group. Using a superiority framework, analysis plan prespecifies
an intention-to-treat approach, per protocol criteria, subgroups analysis, and handling of missing data. The
trial is recruiting since September 2017. Finally, this study was designed to adhere to data sharing practices.
Trial registration: NCT03264443. Registered on 29 August, 2017
Mast cell quantification in the skin of dogs with hormonal dermatosis
The mast cells are important in physiological and pathological skin events. They play an important role in the homeostatic regulatory mechanisms in the skin and thyroid gland. Mast cells present a barrier to difference external environmental stimuli and play a mediating role in the presence of infectious agents under the epidermis. This study aimed to quantify the number of mast cells in histological sections of the skin of healthy dogs and dogs with hypothyroidism and hyperadrenocorticism and to determine the distribution of mast cell numbers in the superficial dermis and deep dermis. When we compared the total mast cell count per high power field in dogs with hypothyroidism, hyperadrenocorticism and healthy dogs, only dogs with hypothyroidism had a significant difference in the quantification of mast cells per high power field, (p < 0.05). After analyzing our results, it was possible to conclude that animals with hypothyroidism produce greater amount of mast cells in the superficial dermis than patients with hyperadrenocorticism and healthy animals
Fractal signature as a rotational modulation and stellar noise classifier based on the active Kepler stars
In this study, we report on the analysis of 701 stars in a solar vicinity
defined in three categories namely subsolar, solar, and supersolar with
rotation periods between 1 and 70 days, based on rotational modulation
signatures inferred from time series from the Kepler mission's Public Archives.
In our analysis, we performed an initial selection based on the rotation period
and position in the period-H diagram, where H denotes the Hurst exponent
extracted from fractal analysis. To refine our analysis, we applied a fractal
approach known as the R/S method, taking into account the fluctuations of the
features associated with photometric modulation at different time intervals and
the fractality traces that are present in the time series of our sample. In
this sense, we computed the so-called Hurst exponent for the referred stars and
found that it can provide a strong discriminant of rotational modulation and
background noise behavior, going beyond what can be achieved with solely the
rotation period itself. Furthermore, our results emphasize that the rotation
period of stars is scaled by the exponent H which increases following the
increase in the rotation period. Finally, our approach suggests that the
referred exponent may be a powerful rotational modulation and noise classifier.Comment: 18 pages, 5 figures, submitted to BJ
Fractal signature as a rotational modulation and stellar noise classifier based on the active kepler stars: Assinatura fractal como um classificador de ruído estelar e modulação rotacional baseada nas estrelas ativas da missão kepler
In this study, we report on the analysis of 701 stars in a solar vicinity defined in three categories namely subsolar, solar, and supersolar with rotation periods between 1 and 70 days, based on rotational modulation signatures inferred from time series from the Kepler mission’s Public Archives. In our analysis, we performed an initial selection based on the rotation period and position in the period–H diagram, where H denotes the Hurst exponent extracted from fractal analysis. To refine our analysis, we applied a fractal approach known as the R/S method, taking into account the fluctuations of the features associated with photometric modulation at different time intervals and the fractality traces that are present in the time series of our sample. In this sense, we computed the so-called Hurst exponent for the referred stars and found that it can provide a strong discriminant of rotational modulation and background noise behavior, going beyond what can be achieved with solely the rotation period itself. Furthermore, our results emphasize that the rotation period of stars is scaled by the exponent H which increases following the increase in the rotation period. Finally, our approach suggests that the referred exponent may be a powerful rotational modulation and noise classifier
The growth index of matter perturbations and modified gravity
We place tight constraints on the growth index by using the recent
growth history results of 2dFGRS, SDSS-LRG, VIMOS-VLT deep Survey (VVDS) and
{\em WiggleZ} datasets. In particular, we investigate several parametrizations
of the growth index , by comparing their cosmological evolution
using observational growth rate data at different redshifts. Utilizing a
standard likelihood analysis we find that the use of the combined growth data
provided by the 2dFGRS, SDSS-LRG, VVDS and {\em WiggleZ} galaxy surveys, puts
the most stringent constraints on the value of the growth index. As an example,
assuming a constant growth index we obtain that for the
concordance CDM expansion model. Concerning the
Dvali-Gabadadze-Porrati gravity model, we find which is
lower, and almost away, from the theoretically predicted value of
. Finally, based on a time varying growth index we
also confirm that the combined growth data disfavor the DGP gravity.Comment: 8 pages, 5 figures. Revised version accepted in MNRAS. arXiv admin
note: text overlap with arXiv:1202.163
- …