Projecto e património edificado em São Paulo. Três casos como práticas de mudança.
Carolina Miguel dos Santos Barreiros
2013-11-06
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You search for fitness and 93,498 records were found.
This paper reviews and addresses a variety of issues relating to inclusive fitness. The main question is: are there limits to the generality of inclusive fitness, and if so, what are the perimeters of the domain within which inclusive fitness works? This question is addressed using two well known tools from evolutionary theory: the replicator dynamics, and adaptive dynamics. Both are combined with population structure. How generally Hamilton's rule applies depends on how costs and benefits are defined. We therefore consider costs and benefits following from Karlin & Matessi's (1983) "counterfactual method", and costs and benefits as defined by the "regression method" (Gardner et al., 2011). With the latter definition of costs and benefits, Hamilton's rule always indicates the direction of selection correctly, and with the former it doe...
Physically fit athletes have been found to have
elevated slow wave sleep (SWS) , longer sleep duration and
decreased sleep onset latency (SOL) compared with unfit
sedentary individuals. It has been hypothesized that the
critical variable in these effects is the subject's level
of fitness resulting from habitual exercise. Certain
negative findings, however, cast doubt on this interpretation.
The aim of the current series of experiments was to further
investigate the effects of physical fitness on electroencephalographic
(EEG) and hormonal aspects of sleep. These
investigations are of theoretical interest as they potentially
provide information regarding the functional significance
of sleep and SWS in particular. Those theories which hypothesize
a relationship between peripheral metabolism and
sleep, for example, the restor...
This study provides evidence suggesting that CEOs' physical fitness has a positive impact on firm value, consistent with the beneficial effects of fitness on, e.g., cognitive functions, stress coping and job performance. For each of the years 2001 to 2011, we define S&P 1500 CEOs as fit if they finish a marathon. CEO fitness is also associated with higher firm profitability and higher M&A announcement returns. Our identification strategy includes CEO-firm fixed effects, instrumental variables, permutation tests, random effects, and time-varying CEO, firm and industry effects. An additional analysis of sudden CEO deaths, based on a fitness measure not limited to running, confirms our results.
<p>Hill-climbing constitutes one of the simplest way to produce approximate solutions of a combinatorial optimization problem, and is a central component of most advanced metaheuristics. This paper focuses on evaluating climbing techniques in a context where deteriorating moves are not allowed, in order to isolate the intensification aspect of metaheuristics. We aim at providing guidelines to choose the most adequate method for climbing efficiently fitness landscapes with respect to their size and some ruggedness and neutrality measures. To achieve this, we compare best and first improvement strategies, as well as different neutral move policies, on a large set of combinatorial fitness landscapes derived from academic optimization problems, including NK landscapes. The conclusions highlight that first-improvement is globally more effic...
Objectives To assess physical fitness in pregnancy and to evaluate its effect on perceived health, back pain, blood pressure and duration of gestation. Also, to evaluate the effect of serum relaxin levels on blood pressure and duration of gestation. Material and methods A prospective cohort of 520 pregnant women were examined in early pregnancy and five months postpartum with regard to socio-demographic characteristics and estimated peak oxygen uptake (V̇O2 peak, est.). Serum concentrations of relaxin were carried out in early pregnancy. Physical exercise, possible back pain and blood pressure were measured repeatedly throughout pregnancy. Results Absolute V̇O2 peak, est. in early pregnancy was positively correlated to perceived health, which was lower during than after pregnancy. The average absolute V̇O2 peak, est. in early pregnancy...
Thesis (Master, Sociology) -- Queen's University, 2014-02-03 09:31:17.172
This article moves beyond a history of domestic home video fitness programs to explore digital fitness with specific attention to the self-monitored fitness 'movement' and the hardware and software that facilitate its proliferation. The research in this area is currently conducted through preliminary small scale studies, alongside some flawed but still (inadvertently) useful undergraduate and graduate projects. Popular cultural interest is burgeoning, with the popularity of the Fitbit suite and the iWatch surging through an array of commentaries on blogs, YouTube videos, tweets and Facebook posts. This theoretical paper links digitisation with fitness to explore the balance between self-monitoring and surveillance, motivation and shaming. The Fitbit is an example of this self-monitored fitness 'movement' that reveals the ambivalence of...
This paper introduces the concept of fitness cloud as an alternative way to visualize and analyze search spaces than given by the geographic notion of fitness landscape. It is argued that the fitness cloud concept overcomes several deficiencies of the landscape representation. Our analysis is based on the correlation between fitness of solutions and fitnesses of nearest solutions according to some neighboring. We focus on the behavior of local search heuristics, such as hill climber, on the well-known NK fitness landscape. In both cases the fitness vs. fitness correlation is shown to be related to the epistatic parameter K.
Thesis (Ph.D, Mathematics & Statistics) -- Queen's University, 2012-10-02 17:55:12.267
