1,721,627 research outputs found
Alien Registration- Anderson, Thomas (Rumford, Oxford County)
Get PDFhttps://digitalmaine.com/alien_docs/13570/thumbnail.jp
Korea and the Knowledge-based Economy : Making the Transition
No full textKnowledge is fast becoming a key factor
in economic and social development worldwide. Rapid
innovations in science, communications and computing
technologies are opening up new opportunities for countries
to harness knowledge and participate more fully in the
global economy. Developing countries that successfully make
the transition to the knowledge-based economy will have
unprecedented possibilities to become more competitive in
world markets and to participate in the global information
society. New technologies can also extend the benefits of
knowledge to all segments of society and help countries
close the gap in living standards among their citizens. This
book defines a knowledge-based economy as one where
knowledge is created, acquired, transmitted and used
effectively by enterprises, organizations, individuals and
communities. It does not focus narrowly on high-technology
industries or on information and communications
technologies, but rather presents a framework for analyzing
a range of policy options in education, information
infrastructure and innovation systems that can help usher in
the knowledge economy. It also makes the case for better
co-ordination among the government, the private sector and
civil society to enhance competitiveness and advance
economic and social development
Plankton functional type modelling: running before we can walk?
No full textBiogeochemical cycling in marine systems is intimately linked to the activity of specific plankton functional types (PFTs) such as diatoms, coccolithophores and nitrogen fixers, thereby providing a focus for contemporary modelling studies. Incorporating extra complexity beyond simple nutrient-phytoplankton-zooplankton-detritus (NPZD) models is, however, fraught with difficulties: poorly understood ecology; lack of data; aggregating diversity within functional groups into meaningful state variables and constants; sensitivity of output to the parameterizations in question and their physical and chemical environment. Although regional models addressing the seasonal succession of plankton types have achieved some degree of success, predicted distributions of PFTs in global biogeochemical models have thus far been less than convincing. While the continued articulation of detail in ecosystem models is surely the way forward, I argue that this can only be so with due care and attention to the formulations employed and a healthy dose of scepticism regarding model outcomes. Future directions should emphasize building up complexity gradually, objective assessment of the resulting parameterizations, and variety in approach such as the use of empirical alternatives to the fully dynamic representation of PFTs in models
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Alien Registration- Anderson, Thomas I. (Portland, Cumberland County)
Get PDFhttps://digitalmaine.com/alien_docs/23817/thumbnail.jp
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
The Mojave-Sonora megashear — Field and analytical studies leading to the conception and evolution of the hypothesis
No full textThe megashear hypothesis is based upon reconnaissance geologic and geochronologic studies conducted principally from 1968 until 1974 in northwestern Sonora, Mexico. Our research incorporated U-Pb isotopic analyses of more than 70 zircon populations separated from 33 Precambrian rock samples with field relations and maps based upon structural and stratigraphic measurements. The results delineate a region known as the Caborca block and further reveal that the block is a principal element of an unexpected, discordant pattern of Proterozoic basement provinces. The Mojave-Sonora megashear was conceived in an effort to explain: (1) the unexpected pattern of two Proterozoic crystalline provinces with distinct chronologic histories of crust formation (1.8–1.7 Ga, Caborca block versus 1.7–1.6 Ga, Pinal Province); (2) the distribution of contrasting cover rocks overlying these basement blocks, (3) the abrupt northeastern limit of the Caborca block (terrane) against which volcanic and plutonic rocks of mid-Jurassic (mainly 180–160 Ma) age are juxtaposed, and (4) the distribution of Jurassic magmatic units that intervene between the provinces of Proterozoic crust. The similarities that exist between crystalline crust and overlying pre-Jurassic cover in northwestern Sonora, Mexico, and units in the Inyo Mountains–Death Valley region are attributed to the offset of correlative units along a Late Jurassic left-lateral strike-slip fault postulated to extend from the Gulf of Mexico to California and beyond. This large fault or megashear is a principal structure that accommodated 800–1000 km of left-lateral displacement among a set of transforms related to the opening of the Gulf of Mexico. The fault is compatible with Late Jurassic plate motion.
The inferred trace of the Mojave-Sonora megashear is obscured by contractional and extensional deformation and extensive plutonism. These processes, concentrated along the fault, commonly obfuscate and displace fault zone rocks along the inferred trace as well as the rocks adjacent to it. However, the fault zone is exposed in Sierra de Los Tanques near the international boundary between Mexico and the United States, where mylonitic rocks that comprise three aligned, discontinuous, segments crop out 1 for ∼25 km. The zone of mylonitic rocks, which crosses Route 8, 13 km SW of Sonoita, is locally almost 5 km wide and separates Triassic granitoids and Precambrian gneiss from Jurassic volcanic and clastic rocks.
The limited exposure of the fault zone is a principal concern of those who object to the Mojave-Sonora megashear hypothesis. Studies of paleomagnetism, structure, stratigraphy, crustal geochemistry, and detrital zircons do not refute the megashear concept; commonly they reinforce existing evidence in support of the hypothesis
Progress in marine ecosystem modelling and the “unreasonable effectiveness of mathematics”
No full textModelling methodology, it is argued, is primarily about providing explanations of data which, if sufficiently convincing, provide a basis for prediction and forecasting. Models allow us to synthesise our knowledge and explore its ramifications, leading to insight and discovery. As such, modelling is invaluable to the progress of marine science, the development and implementation of ever more complex models moving in tandem with our expanding knowledge base. It is possible to argue, however, that mathematics can be “unreasonably effective” at describing phenomena, particularly for complex models where there are often many free parameters to tune against limited data. Errors become difficult to pinpoint and correct, and creativity may be stifled as models become entrenched within the prevailing paradigm. Indiscriminately adding layer upon layer of complexity in models may therefore be counter productive, particularly if prediction of future scenarios such as changing climate is the ultimate goal. The inclusion of additional complexity in models is nevertheless desirable, where relevant and practicable. New modelling approaches that are coming to the fore likely hold the key to future progress such as targeting complexity in key species and trophic levels, adaptive parameterisations and the representation of physiological trade-offs, providing the potential to simulate emergent community structure
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