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Tytuł:
Remote sensing techniques for tracking changes caused by illegal gold mining in Madre de Dios, Peru
Autorzy:
Adamek, Katarzyna
Lupa, Michał
Zawadzki, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/1955015.pdf
Data publikacji:
2021-12-10
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
environmental monitoring
geospatial analysis
South America
remote sensing
Peru
Opis:
Illegal extraction of gold has grown to be a problem in many countries, causing the degradation of the environment. The main purpose of this paper is to investigate changes in tree cover and surface pollution. The development of a mine site has been observed and analysed with images acquired from Landsat and the Sentinel missions. The results of the study showed changes in the state of the environment, strongly suggesting the possibility of ongoing pyrite weathering processes and the transportation of clay materials down watercourses, which can cause not only the further deterioration of the environment but also slow down the natural regeneration of the forest. In addition, research has found disturbing changes in vegetation, showing a loss of tree cover in the Amazon Rainforest as high as 17%. The validity of using remote sensing methods to observe the development of individual mining sites and their characteristics was confirmed.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2021, 25, 4; 205-212
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Postcranial remains of basal typotherian notoungulates from the Eocene of northwestern Argentina
Autorzy:
Armella, M.A.
Garcia-Lopez, D.A.
Babot, M.J.
Deraco, V.
Herrera, C.M.
Saade, L.
Bertelli, S.
Powiązania:
https://bibliotekanauki.pl/articles/2082173.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Mammalia
Notoungulata
calcaneum
astragalus
plantigrade
foot stances
Paleogene
South America
Opis:
Notoungulates represent the most taxonomically diverse and temporally and geographically widespread group among South American native ungulates. Here, we analyze anatomical and systematic aspects of proximal tarsal bones recovered from the Lower and Upper Lumbrera formations (middle and late middle Eocene) in northwestern Argentina. We provide detailed descriptions, comparisons, and infer foot stances and range of movements for the taxa implicated. Material studied includes astragali belonging to the oldfieldthomasiid Colbertia lumbrerense (Lower Lumbrera Formation), a set of proximal tarsals referred as Typotheria indet. (Lower Lumbrera Formation), and tarsals (also including navicular and cuboid) of the informal taxon “Campanorco inauguralis” (Upper Lumbrera Formation). The comparison of the tarsals of Colbertia lumbrerense (middle Eocene of Argentina) with Colbertia magellanica (early Eocene of Brazil) reveals several differences including variations on the development and arrangement of articular facets, and the size of the dorsal astragalar foramen in the Argentinean species. The specimen of Typotheria indet. shows morphological affinities with basal interatheriid taxa. However, its larger size contrasting with the overall small body sizes of Eocene interatheriids precludes an indisputable taxonomic assignment. Concerning “Campanorco inauguralis”, our observations indicate that there is no morphological evidence for a close phylogenetic relationship with Mesotheriidae. It presents a “reversed alternating tarsus” condition, which is also observed in Leontiniidae, “Notohippidae”, Toxodontidae, and some typotherians. However, the spectrum of singularities exhibited by this form precludes the assessment of its relationships in the context of the Paleogene radiation of Typotheria and it is necessary to extend the comparison to Eocene notoungulates. Finally, in a morphofunctional context a plantigrade foot posture is inferred for the specimens here reported. These observations have the potential to provide functional proxies for paleoecological reconstructions to be applied to the study of the early radiation of these notoungulate faunas.
Źródło:
Acta Palaeontologica Polonica; 2020, 65, 2; 1-17
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First Records and Community Pattern of Arcellinida Inhabiting a Pristine and Remote Island from Southeastern Pacific, Chile
Autorzy:
Baessolo, Luisa
Powiązania:
https://bibliotekanauki.pl/articles/763539.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego
Tematy:
Chile, Guamblin Island National Park, lobose testate amoebae, North Patagonian rainforest, southwestern South America
Opis:
We investigate for the first time the species composition and community structure of lobose thecamoebians (Arcellinida) inhabiting an unpopulated and pristine island from the southeastern Pacific. Results revealed low alpha diversity and a high proportion of cosmopolitan species. One genus, four species and two subspecies were identified for the first time for southwestern South America. Further, four morphotypes were not identifi ed to species level, and one could not be identifi ed to species or genera level. They are probably endemics of this poorly studied and remote zone. These results were consistent with the moderate endemicity hypothesis of microbial biogeography. We hypothesized that the low diversity of species recorded on the island is due to selective colonization-extinction dynamics, processes that determines the low species richness of insular macro-organisms. However, this hypothesis needs to be evaluated in the future. Statistical analysis showed that testate amoebae were distributed in two discrete communities in the island. The first consisted of organisms inhabiting habitats located within a forest and the second by organisms inhabiting habitats located outside the forest. The suggested primary factor differentiating these both communities was the availability of appropriate habitat for the different species of testate amoebae.
Źródło:
Acta Protozoologica; 2012, 51, 2
1689-0027
Pojawia się w:
Acta Protozoologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The ground sloth Megatherium americanum: skull shape, bite forces, and diet
Autorzy:
Bargo, M S
Powiązania:
https://bibliotekanauki.pl/articles/23343.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Xenarthra
mastication
Megatherium americanum
behaviour
biomechanics
skull shape
morphology
dietary component
South America
diet
fossil
Megatherium
dietary habit
Pleistocene
fibrous food
Glossotherium robustum
Tardigrada
Bradypus variegatus
Opis:
Megatherium americanum (late Pleistocene of South America) has traditionally been regarded a herbivore, but its dietary habits have not been considered in terms of a morphofunctional analysis. This study describes and analyses the morphology of the masticatory apparatus in order to interpret the jaw mechanics of M. americanum, and thus to infer its diet and behaviour. The results are compared with those for the mylodontid Glossotherium robustum and the extant sloth Bradypus variegatus. The areas of origin and insertion of the masticatory musculature were reconstructed, and the moment arms generated by this musculature were estimated so that the mechanics of the feeding apparatus might be described. These analyses indicate that M. americanum was well adapted for strong and mainly vertical biting. The teeth are extremely hypsodont and bilophodont, and the sagittal section of each loph is triangular with a sharp edge. This suggests that the teeth were used mainly for cutting, rather than grinding, and that hard and fibrous food was not the main dietary component. The diet of M. americanum merits more rigorous analysis, but the evidence provided here indicates that it probably had a browsing diet in open habitats, but also could have fed on moderate to soft tough food.
Źródło:
Acta Palaeontologica Polonica; 2001, 46, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new approach to evaluate the cursorial ability of the giant theropod Giganotosaurus carolinii
Autorzy:
Blanco, R E
Mazzetta, G V
Powiązania:
https://bibliotekanauki.pl/articles/21508.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
Cretaceous
Theropoda
Dinosauria
theropod
dinosaur
Giganotosaurus
South America
Giganotosaurus carolinii
Opis:
The cursorial capability of the South American giant theropod Giganotosaurus carolinii should have been quite limited taking into account the strength indicator of its femur (approximately 7 GPa⁻¹) as well as the risk of experiencing grave or even lethal injuries involved in the falling of this multitonne animal on a run. However, even at low speeds a fall would have caused serious injuries. Thus, in accordance to the approach developed in this study, the maximum speed of Giganotosaurus should be not that which will implicate corporal lesions with minimum probability of lethalness. Instead, its maximum speed should be that which would permit the recovery of body equilibrium as each step is taken. Taking into consideration this approach, an indicator of stability is defined for bipedal, cursorial animals. This indicator is determined by the relationship between the time available for the movement of hip joint during the retraction of a hindlimb and the time needed to move the opposite hindlimb by an angle (in function of the speed) of sufficient magnitude as to facilitate the recovery of body equilibrium. This indicator was used to estimate the maximum speed of locomotion of Giganotosaurus (about 14 m s⁻¹) at which, from a kinematic point of view, the danger of falling does not exist.
Źródło:
Acta Palaeontologica Polonica; 2001, 46, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Percepción de los estudiantes suramericanos hacia ciudadanos extranjeros: Un estudio vinculante sobre inmigración y educación
Perception of South American students towards foreign citizens: A binding study on immigration and xenophobia
Autorzy:
Briceño Núñez, Chess Emmanuel
Powiązania:
https://bibliotekanauki.pl/articles/2076300.pdf
Data publikacji:
2021-12-31
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
estudiante extranjero
estudiante de secundaria
inmigración
xenofobia
Suramérica
foreign student
high school student
immigration
xenophobia
South America
Opis:
Este documento contiene una investigación que presenta resultados asociados con las actitudes de los estudiantes suramericanos hacia compañeros extranjeros, presentando datos informativos en relación a xenofobia, inmigración y educación. La población estuvo compuesta por estudiantes activos de educación secundaria de 6 ciudades representativas de países suramericanos (Buenos Aires Argentina, São Paulo Brasil, Santiago de Chile, Bogotá Colombia, Guayaquil Ecuador y Lima Perú) y una muestra de 1440 estudiantes (240 por país) con edades comprendidas entre los 12 y 17 años de edad. Se aplicó de manera asincrónica un instrumento llamado “Test de Percepción Sociocultural” contentivo de 20 ítems presentados en una escala Likert agrupados en ítems de valoración positiva y valoración negativa. Los datos se procesaron con el Paquete Estadístico para las ciencias sociales (SPSS). Los resultados demuestran que en la mayoría de los países suramericanos existen entre la población escolar joven actitudes xenófobas hacia los inmigrantes suramericanos. Los resultados demuestran que en la mayoría de los países suramericanos participantes hay un grado de percepción positiva hacia los inmigrantes por parte de la población escolar joven, sin embargo hay casos puntales en los que se observa un grado de rechazo hacia los extranjeros.
This document contains an investigation that presents results associated with the attitudes of South American students towards foreign colleagues, presenting informative data in relation to xenophobia, immigration and education. The population was structured by active high school students from 6 representative cities of South American countries (Buenos Aires Argentina, São Paulo Brazil, Santiago de Chile, Bogotá Colombia, Guayaquil Ecuador and Lima Peru) and a sample of 1440 students (240 per country) with ages between 12 and 17 years of age. An instrument called "Sociocultural Perception Test" was applied asynchronously, containing 20 items presented on a Likert scale grouped into positive and negative assessment items. The data were processed with the Statistical Package for the social sciences (SPSS). The results show that in most of the participating South American countries, there is a degree of positive acceptance of immigrants by the young school population; however, there are key cases in which a degree of rejection of foreigners is observed.
Źródło:
Revista del CESLA. International Latin American Studies Review; 2021, 28; 311-334
1641-4713
Pojawia się w:
Revista del CESLA. International Latin American Studies Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diversity of cingulate xenarthrans in the middle–late Eocene of Northwestern Argentina
Autorzy:
CIANCIO, MARTÍN R.
HERRERA, CLAUDIA
ARAMAYO, ALEJANDRO
PAYROLA, PATRICIO
BABOT, JUDITH
Powiązania:
https://bibliotekanauki.pl/articles/945707.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
mammalia
cingulata
dasypodidae
palaeogene
eocene
south america
central andean puna
Opis:
The study of Paleogene mammals of intermediate and low latitudes has increased in the last decades and has been clearly demonstrated their importance in the comprehension of the evolution and faunistic changes outside Patagonia. The study of these faunas permits establishing new comparisons among contemporaneous faunistic associations, completing the distributional patterns, and evaluating evolutionary changes in the lineages in relation to climatic conditions prevailing in each of the different regions. In this work we study the diversity of Dasypodidae recovered from the Geste Formation (Northwestern Argentina). Bearing levels of Geste Formation were referred alternatively to a Barrancan subage of Casamayoran SALMA (middle Eocene, Lutetian–Bartonian) or a Mustersan SALMA (middle–late Eocene, Bartonian–Priabonian) on faunistic comparations with their equivalent in Patagonia, although absolute isotopic data indicates ca. 37–35 Ma (late Eocene, Priabonian). We described the following taxa of Dasypodidae: (i) Dasypodinae Astegotheriini: cf. Astegotherium sp., ?Prostegotherium sp., Parastegosimpsonia cf. P. peruana; (ii) Dasypodinae indet.; (iii) Euphractinae Euphractini: Parutaetus punaensis sp. nov.; (iv) Dasypodidae incertae sedis: Pucatherium parvum, Punatherium catamarcensis gen. et sp. nov. In comparison with other beds bearing Eocene cingulate faunas from Northwestern Argentina, Geste Formation presents the greatest diversity of dasypodids. This association is consistent with a late Eocene age and shows a taxonomic and biogeographic relevant features given by a unique specific composition: (i) it differs from that known for contemporaneous faunas from Southern latitudes and younger associations from more tropical areas; (ii) it includes genera with close affinities to those distant areas; (iii) it presents unique taxa typical from Eocene units exposed at Northwestern Argentina. This highlights the evolutionary and biogeographic meaning of the cingulate of the Geste Formation and supports the idea that the faunistic regionalization probably obeyed to latitudinal than to temporal factors.
Źródło:
Acta Palaeontologica Polonica; 2016, 61, 3; 575-590
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
,,Alfred Rosenblatt (1880-1947). Publikacje, odczyty i wyklady
Autorzy:
Ciesielska, Danuta
Maligranda, Lech
Powiązania:
https://bibliotekanauki.pl/articles/749812.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
20th century mathematics and mathematicians in Europe and South America, bibliographic studies, Alfred Rosenblatt
Opis:
Celem artykułu jest zaprezentowanie dorobku naukowego i dydaktycznego Alfreda Rosenblatta (1880-1947). Zgromadziliśmy pierwszy kompletny spis jego artykułów i książek naukowych, z podziałem na: podręczniki i monografie, artykuły naukowe z zakresu matematyki i jej zastosowań, astronomii, historii matematyki w tym biografie oraz recenzje, tłumaczenia i  inne. Zebraliśmy w publikowanych i niepublikowanych źródłach informacje o jego odczytach, w tym o odczytach i komunikatach na Międzynarodowych Kongresach Matematyków, wystąpieniach na Kongresach Matematyków Krajów Słowiańskich, Zjazdach PTM i innych. Przedstawiliśmy kompletny spis wykładów Rosenblatta na Uniwersytecie Jagiellońskim oraz dostępne informacje o wykładach na Uniwersytecie Świętego Marka w Limie. Ponadto w artykule znajduje się krótki biogram A. Rosenblatta i krótkie omówienie jego wyników naukowych z geometrii algebraicznej, teorii równań różniczkowych, funkcji analitycznych, rachunku wariacyjnego, szeregów, rachunku prawdopodobieństwa i statystyki oraz zastosowań matematyki w hydrodynamice.      
Źródło:
Antiquitates Mathematicae; 2014, 8
1898-5203
2353-8813
Pojawia się w:
Antiquitates Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluating the Frasnian-Famennian mass extinction: Comparing brachiopod faunas
Autorzy:
Copper, P
Powiązania:
https://bibliotekanauki.pl/articles/22494.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
brachiopod fauna
global loss
Palmatolepis linguiformis
climate cycle
Palmatolepis rhenana
Atrypida
water setting
mass extinction
Brachiopoda
South America
Famennian
shelf area
Frasnian
atrypid extinction
Late Devonian
Devonian
reef habitat
paleontology
Opis:
The Frasnian-Famennian (F-F) mass extinctions saw the global loss of all genera belonging to the tropically confined order Atrypida (and Pentamerida): though Famennian forms have been reported in the literafure, none can be confirmed. Losses were more severe during the Givetian (including the extinction of the suborder Davidsoniidina, and the reduction of the suborder Lissatrypidina to a single genus), but origination rates in the remaining suborder surviving into the Frasnian kept the group alive, though much reduced in biodiversity from the late Early and Middle Devonian. In the terminal phases of the late Palmatolepis rhenana and P. linguiformis zones at the end of the Frasnian, during which the last few Atrypidae dechned, no new genera originated, and thus the Atrypida were extirpated. There is no evidence for an abrupt termination of all lineages at the F-F boundary, nor that the Atrypida were abundant at this time, since all groups were in decline and impoverished. Atypida were well established in dysaerobic, muddy substrate, reef lagoonal and off-reef deeper water settings in the late Givetian and Frasnian, alongside a range of brachiopod orders which sailed through the F-F boundary: tropical shelf anoxia or hypoxia seems implausible as a cause for atrypid extinction. Glacial-interglacial climate cycles recorded in South America for the Late Devonian, and their synchronous global cooling effect in low latitudes, as well as loss of the reef habitat and shelf area reduction, remain as the most likely combined scenarios for the mass extinction events.
Źródło:
Acta Palaeontologica Polonica; 1998, 43, 2
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
La inclusión cultural en las normativas migratorias de la República Argentina en el contexto sudamericano (1983–2018)
Autorzy:
Crescentino, Diego Sebastián
Powiązania:
https://bibliotekanauki.pl/articles/683021.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Argentina, migratory laws, cultural inclusion, South America, regional institutions for cultural integration
Argentina, leyes migratorias, inclusión cultural, Sudamérica, instituciones regionales de integración cultural
Opis:
This paper seeks to recover the debate on the cultural inclusion of migrants in the Argentine legal system (1983–2018), paying attention to regional integration initiatives in the South American context. For this, I expose a theoretical sketch around the concept of cultural policy. After that, I analyse the Argentine immigration regulations since 1983, the current immigration law and the legal order that emerged from its promulgation, exposing those points devoted to cultural inclusion. At the same time, I examine the reciprocal influence existing between the Argentine migratory order and the agreements reached by supranational organizations. By way of closing, I explain the incipient institutionalization of regional cultural integration initiatives.
Este artículo tiene por objetivo recuperar el debate en torno a la inclusión cultural de los migrantes en el ordenamiento legal argentino (1983–2018), prestando atención a las iniciativas regionales de integración en el contexto sudamericano. Para ello, se realiza un esbozo teórico en torno al concepto de política cultural. Posteriormente, se analizan las normativas migratorias argentinas desde 1983, la ley migratoria vigente y el ordenamiento legal surgido desde su promulgación, exponiendo aquellos puntos consagrados a la inclusión cultural. Paralelamente, se examina la influencia recíproca existente entre el ordenamiento migratorio argentino y los acuerdos alcanzados por organismos supranacionales. A modo de cierre, se expone la incipiente institucionalización de iniciativas de integración cultural regional.
Źródło:
Anuario Latinoamericano – Ciencias Políticas y Relaciones Internacionales; 2018, 6
2449-8483
2392-0343
Pojawia się w:
Anuario Latinoamericano – Ciencias Políticas y Relaciones Internacionales
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Flora mszaków i porostów Kanionu Colca (Peru) - badania rekonesansowe
Bryophyte and lichen flora of the Colca Canyon (Peru) - reconnaissance research
Autorzy:
Cykowska, B.
Flakus, A.
Powiązania:
https://bibliotekanauki.pl/articles/183537.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Ameryka Południowa
Andy góry
Peru
Kanion Colca
Bryophyta
Marchantiophyta
Anthocerotophyta
grzyby zlichenizowane (porosty)
bioróżnorodność
ochrona gatunkowa
South America
Andes
Colca Canyon
lichenized fungi (lichens)
biodiversity
species conservation
Opis:
Artykuł jest pierwszym doniesieniem o długofalowym projekcie, mającym na celu poznanie różnorodności gatunkowej mszaków i porostów na obszarze projektowanego Parku Narodowego Kanion Colca i Dolina Wulkanów (Arequipa, Peru) oraz ich ekologii w kontekście zróżnicowania środowiska abiotycznego. Środowisko przyrodnicze tego najgłębszego kanionu świata nie doczekało się dotychczas kompleksowego opracowania flory mszaków i porostów. Już na podstawie wstępnych obserwacji stwierdzono ich znaczący udział w szacie roślinnej tego obszaru oraz potencjalnie duże bogactwo gatunkowe wynikające ze znacznego zróżnicowania siedlisk. Istotnym wynikiem rozpoczętych badań jest odkrycie pierwszych stanowisk porostów Lecanora leuckertiana w Ameryce Południowej i Lepraria impossibilis na Półkuli Południowej. Dalsze badania powinny zaowocować opracowaniem pełnej listy gatunków mszaków i porostów Parku Narodowego Kanion Colca i Dolina Wulkanów oraz dostarczyć argumentów do ochrony jego unikalnej przyrody.
The paper is a preliminary report of a long-term project that aims at completing the flora of bryophytes and lichens in the projected Canyon Colca and the Valley of the Volcanoes National Park area (Arequipa, Peru). The bryophytes and lichens of this deepest canyon in the world has remained underexplored for a long time. These organisms dominate in the vegetation cover and exhibit a remarkable species diversity resulting from habitat richness in this area. The important result of preliminary studies was discovered the first records of lichens Lecanora leuckertiana in South America and Lepraria impossibilis in the Southern Hemisphere. Further researeh should result in completing floristic lists of bryophytes and lichens of the Canyon Colca and the Valley of the Volcanoes National Park and should provide arguments for the protection of its unique wild life.
Źródło:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie; 2008, 34, 2/1; 193-203
0138-0974
Pojawia się w:
Geologia / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ameryka Północna i Południowa. Teraźniejszość i przyszłość integracji gospodarczej
Autorzy:
Czarnacki, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/1856549.pdf
Data publikacji:
2004
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
NAFTA
FTAA
integracja gospodarcza
USA
Kanada
Meksyk
Ameryka Południowa
economic integration
Canada
Mexico
South America
Opis:
The 1990s saw a number of relevant events in the area of international economic integration that are best demonstrated by huge political and economic blocs that appeared in this period. The European Union and The North American Free Trade Agreement (NAFTA) are one of the biggest and most important of them. With the view to the strategic importance of the cooperation between American states, the author presents how the North American Free Trade Agreement functions and describes the process of founding the Free Trade Area of the Americas (FTAA). The first part of the article devoted to the NAFTA looks at the main principles of the Area as well as at trends in trade among its members. In the second part dealing with the FTAA the author presents the main reasons for the commencement of negotiations regarding the foundation of the FTAA and synthetically presents its economic potential.
Źródło:
Roczniki Nauk Społecznych; 2004, 32, 3; 75-83
0137-4176
Pojawia się w:
Roczniki Nauk Społecznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Restrukturyzacja gospodarki brazylijskiej w latach 1950-2004
Restructurisation of the Brazilian Economy 1950-2004
Autorzy:
Czarnacki, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/38890052.pdf
Data publikacji:
2006
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
Ameryka Południowa
Brazylia
restrukturyzacja
industrializacja
reforma
kryzys zadłużeniowy
kryzys walutowy
Plan Real
South America
Brazil
restructurization
industrialization
reform
debt crisis
currency crisis
Opis:
The article presents the process of restructurization of Brazilian economy in the second half of the 20th century. The Author presents major economic programs implemented by the Brazilian government since 1950's until 2004 and shows the main assumptions of implemented reforms and their effects in the economy. The Author proves that structural changes, which can be noticed in the Brazilian economy, are fundamental for further strengthening of Brazil’s position in both South America and global economy.
Źródło:
Roczniki Wydziału Nauk Prawnych i Ekonomicznych KUL; 2006, 2, 2; 243-260
1896-6365
Pojawia się w:
Roczniki Wydziału Nauk Prawnych i Ekonomicznych KUL
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial structure of the economy - the evolution of nodes and networks in South and Central America
Autorzy:
Czerny, Mirosława
Czerny, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2134634.pdf
Data publikacji:
2019-11-10
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Space structure of economy
regional nodes and networks
South America
Central America
spatial organization
Opis:
The form assumed contemporarily by spatial organization in South and Central America as a network of nodes and spatial linkages represents the outcome for the space of this region of long-acting external influences plus internal conditions that have - at diferent times in diferent ways shaped spatial relationships and the manner in which space in this part of the world is planned. Naturally, the spatial structure of today's economy is influenced further by globalization, with growing competition for access to resources, be these either mineral deposits or agricultural in nature. These impacts ensure that, notwithstanding the widely-voiced opinion on the need to protect nature in areas of the continent supporting moist tropical forests, and in the high Andes, the governments of the diferent countries continue to award concessions allowing corporations of global reach to exploit resources of value that are in demand worldwide. This aggressive “resources race” has its serious consequences with regard to the forms and scope the region's spatial management and organization assume. These processes ought to be regulated by spatial planning, which is thus failing to play its proper role at regional levels. Those researching South America refer without hesitation to the lack of planning and overexploitation of raw materials, with all the serious consequences this has for society, not least with regard to internal migration, expulsions, the impoverishment of groups in society deprived of their land, and so on.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2019, 23, 4; 225-234
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New remains attributable to the holotype of the sauropod dinosaur Neuquensaurus australis, with implications for saltasaurine systematics
Autorzy:
D'emic, M.
Wilson, J.
Powiązania:
https://bibliotekanauki.pl/articles/20033.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
paleontology
Dinosauria
Sauropoda
Titanosauria
Neuquensaurus australis
Saltasaurus loricatus
taxonomy
Cretaceous
South America
remains
new remains
holotype
sauropod dinosaur
dinosaur
systematics
saltasaurine systematics
Opis:
The Late Cretaceous South American sauropods Neuquensaurus australis and Saltasaurus loricatus are represented by well−preserved and abundant material that has been integral to our understanding of titanosaur anatomy for decades. Although the hypodigms for these species span most of the skeleton, holotypic materials are limited to a few bones that do not overlap between the two taxa. In this contribution, we augment the holotype of Neuquensaurus australis with a partial sacrum that was preserved in articulation with one of the caudal vertebrae from its original description, but not recognised as such at the time. We document this field association via the presence of a broken piece of matrix on the sixth sacral vertebral centrum that has a snap−fit to matrix on the rim of the anterior condyle of the holotypic biconvex vertebra. Based on comparisons with a more complete sacrum and ilium of a referred specimen of Neuquensaurus australis, we interpret this biconvex vertebra to be the seventh sacral vertebra. This raises the possibility that the biconvex “first caudal” vertebra of some other titanosaurs may be part of the sacrum as well. Augmentation of the Neuquensaurus australis holotype to include a sacrum makes it directly comparable to the holotype of Saltasaurus loricatus. Morphological differences in the number, shape, and proportion of sacral vertebrae allow discrimination between Neuquensaurus and Saltasaurus, confirming their generic separation. The El Brete quarry, which preserves the holotypic sacrum and abundant referred specimens of Saltasaurus loricatus, also preserves a sacrum consisting of seven vertebrae that bears autapomorphies of Neuquensaurus australis, indicating that these two saltasaurines coexisted.
Źródło:
Acta Palaeontologica Polonica; 2011, 56, 1
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 69

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