336,749 research outputs found
Verdade e método em Francis Bacon
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em Filosofia.Estudo sobre o método e o conceito de verdade defendido por Francis Bacon, sendo nossos principais objetivos nesse trabalho: a) esclarecer algumas questões relativas ao método baconiano, principalmente no que se refere ao uso de hipóteses; b) apresentar uma interpretação falibilista da teoria de Francis Bacon, mostrando que a verdade e a utilidade são finalidades interdependentes em sua filosofia
'Beyond, both the Old World, and the New': Authority and Knowledge in the works of Francis Bacon, with special reference to the New Atlantis
No full textPhDThis study investigates the role of authority in the works of Francis Bacon,
arguing that the issue of authority provides not only an interpretation of New
Atlantis, but an important structural component of his body of works. From
the first manifestation of his philosophical project to his last works of natural
history, authority is an all-pervasive issue - the authority of nature, of
scripture, of the named author, and how authority functions in the
dissemination of natural knowledge. Chapter one argues that the publication
of New Atlantis alongside Sylva sylvarum in 1626/7 was more the result of
William Rawley's need to assert his own authority as the protector and
disseminator of Bacon's textual legacy than an appreciation of the work's own
qualities. Chapter two considers Bacon's views of history and time,
suggesting that Bacon not only conceived of a new, progressive mode of
historical time which would allow for the assertion of a textual authority based
on the records of a civilisation unbroken by the vicissitudes of time, but that
he figured these theories in New Atlantis. Chapter three argues that Bacon
used theology both as defence and imperative to his intellectual programme,
while his attempt to move beyond the deterministic, Calvinist world-view to
allow for multiple possible futures, or `chance': Bacon could then present
experiment as the way of eliminating chance, in order to accelerate the rate of
new discovery. Chapter four investigates Bacon's manipulations of textual
authority, from the early rehearsals of the Instauratio magna to the
performance of reliability in print in Sylva sylvarum. Finally, the afterword
seeks to suggest that the New Atlantis hinges on the issues of authority with
which Bacon engaged throughout his career and writings: in the issue of
authority, Francis Bacon found the beginning and the end of his philosophy
RRS James Clark Ross Cruise 81, 18 Dec 2002-02 Jan 2003. Drake Passage repeat hydrography: WOCE Southern Repeat Section 1b – Elephant Island to Burdwood Bank
No full textThis report describes the eighth repeat hydrography section across Drake Passage, first established during the World Ocean Circulation Experiment. Thirty CTD/LADCP stations were carried out across the 753 km section from Elephant Island to Burdwood Bank, plus one test station and one station at the Rothera Time Series (RaTS) site, just off Biscoe Wharf at Rothera. Maximum station spacing on thesection was 33 km, with stations closer together on the continental shelves. Water samples were drawn for salinity analysis, for subsequent CTD conductivity calibration. Samples were also drawn for analysis of oxygen isotope fraction ?18O, for later analysis back at Southampton Oceanography Centre. The LADCP comprised a single downward-looking RD Instruments Workhorse ADCP. The CTD was a SeaBird 911plus with dual conductivity and temperature sensors. Various underway measurements included navigation, vessel-mounted ADCP, sea surface temperature and salinity, water depth and meteorological parameters
RRS James Clark Ross Cruise 67, 19 Nov-17 Dec 2002. Drake Passage repeat hydrography: WOCE Southern Repeat Section 1b – Burdwood Bank to Elephant Island
No full textThis report describes the seventh repeat hydrography section across Drake Passage, first established during the World Ocean Circulation Experiment. Thirty CTD/LADCP stations were carried out across the 753 km section from Burdwood Bank to Elephant Island, plus one test station, one station in Drake Passage to provide sound speed information for concurrent geophysical activities, and one station at the Rothera Time Series (RaTS) site, just off Biscoe Wharf at Rothera. Maximum station spacing on thesection was 33 km, with stations closer together on the continental shelves. Water samples were drawn for salinity analysis, for subsequent CTD conductivity calibration. The LADCP was a new 2-instrument setup comprising upward– and downward–looking RD Instruments Workhorse ADCPs. The CTD was a SeaBird 911plus with dual temperature and conductivity sensors. Various underway measurements included navigation, vessel-mounted ADCP, sea surface temperature and salinity, water depth and meteorological parameters
The Rossby radius in the Arctic Ocean
No full textThe first (and second) baroclinic deformation (or Rossby) radii are presented north of ~60° N, focusing on deep basins and shelf seas in the high Arctic Ocean, the Nordic seas, Baffin Bay, Hudson Bay and the Canadian Arctic Archipelago, derived from climatological ocean data. In the high Arctic Ocean, the first Rossby radius increases from ~5 km in the Nansen Basin to ~15 km in the central Canadian Basin. In the shelf seas and elsewhere, values are low (1–7 km), reflecting weak density stratification, shallow water, or both. Seasonality strongly impacts the Rossby radius only in shallow seas, where winter homogenization of the water column can reduce it to below 1 km. Greater detail is seen in the output from an ice–ocean general circulation model, of higher resolution than the climatology. To assess the impact of secular variability, 10 years (2003–2012) of hydrographic stations along 150° W in the Beaufort Gyre are also analysed. The first-mode Rossby radius increases over this period by ~20%. Finally, we review the observed scales of Arctic Ocean eddies
Letter to Selden D. Bacon from Columbia University
No full textIn this letter Selden D. Bacon is informed that he had been chosen to be an associate at Columbia University to teach a s seminar on Drugs and Society
Decadal variability in the outflow from the Nordic seas to the deep Atlantic Ocean
No full textThe global thermohaline circulation is the oceanic overturning mode, which is manifested in the North Atlantic Ocean as northward-flowing surface waters which sink in the Nordic (Greenland, Iceland and Norwegian) seas and return southwards—after overflowing the Greenland–Scotland ridge—as deep water. This process has been termed the 'conveyor belt', and is believed to keep Europe 5–8 °C warmer than it would be if the conveyor were to shut down. The variability of today's conveyor belt is therefore an important component of climate regulation. The Nordic seas are the only Northern Hemisphere source of deep water and a previous study has revealed no long-term variability in the outflow of deep water from the Nordic seas to the Atlantic Ocean. Here I use flows derived from hydrographic data to show that this outflow has approximately doubled, and then returned to previous values, over the past four decades. I present evidence which suggests that this variability is forced by variability in polar air temperature, which in turn may be connected to the recently reported Arctic warming
Roger Bacon's Theory of Signs
No full textThe subject of this thesis is Roger Bacon`s work De signis. Its goal is to consider in what sense Bacon works out the general theory of signs. In this sense the thesis` method is situated in the field of "archeology of sings". First it examines Bacon`s definition of sign as a relation, investigates its formal properties and ways of application in particular cases, i.e. Bacon`s classification of signs. Then it shows the way in which Bacon applies this general notion in particular examinations, that is in problems of what the words signify, concept of univaocation and equivocation, theory of analogy and last but not least it considers a question of the nature of signification itself. The last chapter is dedicated to the examination of the (re)imposition phenomenon together with consideration of result it has on the notion of sign relation`s nature and how it serves as an explanation of the process in which these relations work. Keywords: Roger Bacon, John Deely, Charles S. Peirce, medieval semiotics, archeology of signs.Předmět práce je pojednání De signis Rogera Bacona. Jejím cílem je zvážit, jakým způsobem v tomto pojednání Bacon vypracovává obecnou teorii znaku. V tomto smyslu se práce metodicky zařazuje do oblasti "archeologie znaků". Nejprve zkoumá Baconovu definici znaku jako relace, zabývá se jejími formálními náležitostmi a způsoby, jimiž se uplatňuje v jednotlivých případech, tedy Baconovou klasifikací znaků. Dále ukazuje, jakým způsobem s tímto obecným pojetím Bacon pracuje v jednotlivých dílčích zkoumáních, tj. v otázkách, co a jak označují slova, koncepcí univokace a ekvivokace, teorií analogie a v neposlední řadě otázkou povahy signifikace jako takové. Závěrečná kapitola je věnována zkoumání fenoménu (re)impozice se zvážením důsledků, jaké má na pojetí povahy znakové relace jako takové a nakolik slouží jako výklad procesu, v němž se tyto relace uplatňují. Klíčová slova: Roger Bacon, John Deely, Charles S. Peirce, středověká sémiotika, archeologie znaků.Katedra elektronické kultury a sémiotikyDepartment of Electronic Culture and SemioticsFaculty of HumanitiesFakulta humanitních studi
RRS Discovery Cruise 309-310, 18 Aug-05 Sep 2006. Cape Farewell and Eirik Ridge (CFER-2)
No full textThis report describes scientific activities during RRS Discovery cruise 309-310 in the vicinity of Cape Farewell, southern Greenland, during late summer 2006. A Deep Western Boundary Current array of seven moorings was recovered and a replacement array of five moorings was deployed. For IFREMER, one mooring and one glider were recovered; one IfM-GEOMAR and three NIOZ moorings were recovered, serviced and redeployed. Hydrographic work comprised 25 CTD/LADCP stations, and three tows of the Moving Vessel Profiler (MVP); water samples were captured on each station for the measurement of salinity. Continuous underway measurements comprised: navigation; currents, using ship-mounted ADCPs (75 and 150 kHz); meteorology; sea surface temperature and salinity; and bathymetry. D309-310 (CFER-2) is a part of the project “Cape Farewell and Eirik Ridge: Interannual to Millennial Thermohaline Circulation Variability”, funded by the UK Natural Environment Research Council as part of its “Rapid Climate Change” Directed Research Programme
Endogenous N-nitroso compounds, and their precursors, present in bacon, do not initiate or promote aberrant crypt foci in the colon of rats
No full textProcessed meat intake is associated with increased risk of colorectal cancer. This association may be explained by the endogenous formation of N-nitroso compounds (NOC). The hypothesis that meat intake can increase fecal NOC levels and colon carcinogenesis was tested in 175 Fischer 344 rats. Initiation was assessed by the number of aberrant crypt foci (ACF) in the colon of rats 45 days after the start of a high-fat bacon-based diet. Promotion was assessed by the multiplicity of ACF (crypts per ACF) in rats given experimental diets for 100 days starting 7 days after an azoxymethane injection. Three promotion studies were done, each in 5 groups of 10 rats, whose diets contained 7%, 14%, or 28% fat. Tested meats were bacon, pork, chicken, and beef. Fecal and dietary NOC were assayed by thermal energy analysis. Results show that feces from rats fed bacon-based diets contained 10-20 times more NOC than feces from control rats fed a casein-based diet (all p < 0.0001 in 4 studies). In bacon-fed rats, the amount of NOC input (diet) and output (feces) was similar. Rats fed a diet based on beef, pork, or chicken meat had less fecal NOC than controls (most p < 0.01). No ACF were detected in the colon of bacon-fed uninitiated rats. After azoxymethane injection, unprocessed but cooked meat-based diets did not change the number of ACF or the ACF multiplicity compared with control rats. In contrast, the bacon-based diet consistently reduced the number of large ACF per rat and the ACF multiplicity in the three promotion studies by 12%, 17%, and 20% (all p < 0.01). Results suggest that NOC from dietary bacon would not enhance colon carcinogenesis in rats
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