Informe ejecutivo SQyF - Desarrollo humano y organizacional

Banco del conocimiento

SQyF Septiembre 2012 - 2013 Vicepresidencia de competitividad

Banco del conocimiento

On affirmation and becoming : a Deleuzian reading of Nietzsche's critique of nihilism

The main thrust of this thesis is the re-exploration of Friedrich Nietzsche's "critique of nihilism" through the lenses of Gilles Deleuze. A Deleuzian reading of Nietzsche is motivated by a post-deconstrnctive style of interpretation, inasmuch as Deleuze goes beyond, or in between, henneneutics and deconstrnction. Deleuze's post-deconstrnctive reading of Nietzsche is, however, only secondary to the main aim of this thesis. The primary thrust of this study is the critique of a way of thinking characterized by Nietzsche as nihilistic. Therefore, it should be noted that this study is not about Deleuze's reading per se; rather, it is an appraisal of Nietzsche's "critique of nihilism" using Deleuze's experimental reading. We will accrue Nietzsche's critique and Deleuze's post-deconstrnctive reading in order to appraise Nietzsche's critique itself. Insofar as we have underscored Deleuze's purported experimentation of Nietzschean themes, this study is also an experiment in itself. Through this experimentation, we will find out whether it is possible to partly gloss Nietzsche's critique of nihilism through Deleuzian phraseology. Far from presenting a mere exposition of Nietzsche's text, we are, rather, re-reading, that is, re-evaluating Nietzsche's critique of nihilism through Deleuze's experimentation. This is our way of thinking with Nietzsche. Nihilism is the central problem upon which Nietzsche's philosophical musings are directed; he deems nihilism as a cultural experience and, as such, a phenomenon to be reckoned with. In our reconstruction of Nietzsche's critique of nihilism, we locate two related elements which constitute the structure of the prescription of a cure, Le., the ethics of affirmation and the ontology of becoming. Appraising Nietzsche's ethics and ontology amounts to clarifying what Deleuze thinks as the movement from the "dogmatic image of thought" to the "new image of thought." Through this new image of thought, Deleuze makes sense of a Nietzschean counterculture which is a perspective that resists traditional or representational metaphysics. Deleuze takes the reversal of Platonism or the transmutation of values to be the point of departure. We have to, according to Deleuze, abandon our old image of the world in order to free ourselves from the obscurantism of foundationalist or essentialist thinking. It is only through the transmutation of values that we can make sense of Nietzsche's ethics of affirmation and ontology of becoming. We have to think of Nietzsche's ethics as an "ethics" and not a moral philosophy, and we have to think of his ontology as 1/ ontology" and not as metaphysics. Through Deleuze, we are able to avoid reading Nietzsche as a moral philosopher and metaphysician. Rather, we are able to read Nietzsche as one espousing an ethical imperative through the thought of the eternal return and one advocating a theory of existence based on an immanent, as opposed to transcendent, image of the world.

Aerobic exercise in adolescence : self-efficacy and stage of change

The purpose of this cross-sectional exploratory study was to examine the relationships among self-efficacy, stage of change, and exercise behaviour in a sample of younger (Grade 9) and older (Grade 12) adolescents. A secondary objective of this study was to apply the transtheoretical model of Stage of Change, as a measure of intention to change, in order to discover the applicability of the model to an adolescent cohort in relation to exercise behaviour. This five-stage model is a self-report measure of an individual's readiness to adopt a new behaviour (e.g., regular exercise). The transtheoretical model incorporates Bandura's self-efficacy factor, which is purported to be a predictive measure of exercise behaviour and a covariant of stage. Exercise behaviour was measured with the Physical Activity Scale, and the University of Rhode Island Change Assessment Scale (URleA) was used to measure the stage of change and self-efficacy variables. The results of this study indicated significant differences between younger and older adolescents, and between males and females in their exercise behaviour. No significant differences were found for grade and gender on stage of change as measured by either a single-item question or a continuous measure of stage. Although grade and gender subgroups were not significantly different in their self-efficacy, significant interaction was found in the grade*gender variable.

Biogeochemistry of Paleozoic brachiopods from New York State and Ontario

A comprehensive elemental, isotopic and microstructural analyses was undertaken of brachiopod calcites from the Hamilton Group (Middle Devonian), Clinton Group (Middle Silurian) and Middle to Upper Ordovician strata of Ontario and New York State. The majority of specimens were microstructurally and chemically preserved in a pristine state, although a number of specimens show some degree of post-depositional alteration. Brachiopod calcites from the Hamilton and Clinton Groups were altered by marine derived waters whereas Trenton Group (Middle Ordovician) brachiopods altered in meteorically derived fluids. Analysis of the elemental and isotopic compositions of pristine Hamilton Group brachiopods indicates there are several chemical relationships inherent to brachiopod calcite. Taxonomic differentiation of Mg, Sr and Na contents was evident in three co-occuring species from the Hamilton Group. Mean Mg contents of pristine brachiopods were respectively Athyris spiriferoides (1309ppm), Mucrospirifer mucronatus (1035ppm) and Mediospirifer audacula (789ppm). Similarly, taxonomic differentiation of shell calcite compositions was observed in co-occuring brachiopods from the Clinton Group (Middle Silurian) and the Trenton Group (Middle Ordovician). The taxonomic control of elemental regulation into shell calcite is probably related to the slightly different physiological systems and secretory mechanisms. A relationship was observed in Hamilton Group species between the depth of respective brachiopod communities and their Mg, Sr and Na contents. These elements were depleted in the shell calcites of deeper brachiopods compared to their counterparts in shallower reaches. Apparently shell calcite elemental composition is related to environmental conditions of the depositional setting, which may have controlled the secretory regime, mineral morphology of shell calcite and precipitation rates of each species. Despite the change in Mg, Sr and Na contents between beds and formations in response to environmental conditions, the taxonomic differentiation of shell calcite composition is maintained. Thus, it may be possible to predict relative depth changes in paleoenvironmental reconstructions using brachiopod calcite. This relationship of brachiopod chemistry to depth was also tested within a transgressiveregressive (T-R) cycle in the Rochester Shale Formation (Middle Silurian). Decreasing Mg, Sr and Na contents were observed in the transition from the shallow carbonates of the Irondequoit Formation to the deeper shales of the lowest 2 m of Rochester Shale. However, no isotopic and elemental trends were observed within the entire T-R cycle which suggests that either the water conditions did not change significantly or that the cycle is illusory. A similar relationship was observed between the Fe and Mn chemistries of shell calcite and redox/paleo-oxygen conditions. Hamilton Group brachiopods analysed from deeper areas of the shelf are enriched in Mn and Fe relative to those from shallow zones. The presence of black shales and dysaerobic faunas, during deposition of the Hamilton Group, suggests that the waters of the northern Appalachian Basin were stratified. The deeper brachiopods were marginally positioned above an oxycline and their shell calcites reflect periodic incursions of oxygen depleted water. Furthermore, analysis of Dalmanella from the black shales of the Collingwood Shale (Upper Ordovician) in comparison to those from the carbonates of the Verulam Formation (Middle Ordovician) confirm the relationship of Fe and Mn contents to periodic but not permanent incursions of low oxygen waters. The isotopic compositions of brachiopod calcite found in Hamilton Group (813C; +2.5% 0 to +5.5% 0; 8180 -2.50/00 to -4.00/00) and Clinton Group (813C; +4.00/00 to +6.0; 8180; -1.8% 0 to -3.60/ 00) are heavier than previously reported. Uncorrected paleotemperatures (assuming normal salinity, 0% 0 SMOW and no fractionation effects) derived from these isotopic values suggest that the Clinton sea temperature (Middle Silurian) ranged from 18°C to 28°C and Hamilton seas (Middle Devonian) ranged between 24°C and 29°C. In addition, the isotopic variation of brachiopod shell calcite is significant and is related to environmental conditions. Within a single time-correlative shell bed (the Demissa Bed; Hamilton Group) a positive isotopic shift of 2-2.5% 0 in 013C compositions and a positive shift of 1.0-1.50/00 in 0180 composition of shell calcite is observed, corresponding with a deepening of brachiopod habitats toward the axis of the Appalachian Basin. Moroever, a faunal succession from deeper Ambocoelia dominated brachiopod association to a shallow Tropidoleptus dominated assocation is reflected by isotopic shifts of 1.0-1.50/00. Although, other studies have emphasized the significance of ±20/oo shifts in brachiopod isotopic compositions, the recognition of isotopic variability in brachiopod calcite within single beds and within depositional settings such as the Appalachian Basin has important implications for the interpretation of secular isotopic trends. A significant proportion of the variation observed isotopic distribution during the Paleozoic is related to environmental conditions within the depositional setting.