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Results 1 - 10
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465
Self-determination and persistence in a real-life setting: Toward a motivational model of high school dropout.
- Journal of Personality and Social Psychology,
, 1997
"... The purpose of this study was to propose and test a motivational model of high school dropout. The model posits that teachers, parents, and the school administration's behaviors toward students influence students' perceptions of competence and autonomy. The less autonomy supportive the so ..."
Abstract
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Cited by 183 (19 self)
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as that discussed in footnote 11, we compared the paths involving parents, teachers, and the school administration, on one hand, and perceptions of competence and autonomy, on Lhe other. Here again, all differences in chi-square values from the equality models relative to the motivational model were significant
A METRIC APPROACH TOWARD POINT PROCESS DIVERGENCE
"... Estimating divergence between two point processes, i.e. probability laws on the space of spike trains, is an essential tool in many computational neuroscience applications, such as change detection and neural coding. However, the prob-lem of estimating divergence, although well studied in the Euclid ..."
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Estimating divergence between two point processes, i.e. probability laws on the space of spike trains, is an essential tool in many computational neuroscience applications, such as change detection and neural coding. However, the prob-lem of estimating divergence, although well studied
Amelioration of bacterial genomes: rates of change and exchange
- J. Mol. Evol
, 1997
"... Abstract. Although bacterial species display wide variation in their overall GC contents, the genes within a particular species ’ genome are relatively similar in base composition. As a result, sequences that are novel to a bacterial genome—i.e., DNA introduced through recent horizontal transfer—oft ..."
Abstract
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Cited by 137 (10 self)
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of horizontally transferred, protein-coding DNA. Estimates of amelioration times indicate that this DNA has accumulated at a rate of 31 kb per million years, which is on the order of the amount of variant DNA introduced by point mutations. This rate predicts that the E. coli and Salmonella enterica lineages have
Whom You Know Matters: Venture Capital Networks and Investment Performance,
- Journal of Finance
, 2007
"... Abstract Many financial markets are characterized by strong relationships and networks, rather than arm's-length, spot-market transactions. We examine the performance consequences of this organizational choice in the context of relationships established when VCs syndicate portfolio company inv ..."
Abstract
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Cited by 138 (8 self)
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money flowed into the VC industry in the year they were raised. The effect is large economically: A one-standarddeviation increase in vintage-year fund inflows reduces exit rates by seven percentage points from the 34.5% estimation sample average, holding all other covariates at their sample means
Unsupervised learning of an atlas from unlabeled point-sets
- IEEE Trans. Pattern Anal. Mach. Intell
, 2004
"... One of the key challenges in deformable shape modeling is the problem of estimating a meaningful average or mean shape from a set of unlabeled shapes. We present a new joint clustering and matching algorithm that is capable of computing such a mean shape from multiple shape samples which are represe ..."
Abstract
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Cited by 60 (2 self)
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are represented by unlabeled point-sets. An iterative bootstrap process is used wherein multiple shape sample point-sets are non-rigidly deformed to the emerging mean shape, with subsequent estimation of the mean shape based on these non-rigid alignments. The process is entirely symmetric with no bias toward any
Reversible Markov chains and optimality of symmetrized empirical estimators
- Bernoulli
, 1998
"... Suppose we want to estimate the expectation of a function of two arguments under the stationary distribution of two successive observations of a reversible Markov chain. Then the usual empirical estimator can be improved by symmetrizing. We show that the symmetrized estimator is efficient. We point ..."
Abstract
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Cited by 11 (8 self)
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Suppose we want to estimate the expectation of a function of two arguments under the stationary distribution of two successive observations of a reversible Markov chain. Then the usual empirical estimator can be improved by symmetrizing. We show that the symmetrized estimator is efficient. We point
Estimating divergence dates and substitution rates in the Drosophila phylogeny
- Mol Biol Evol
, 2012
"... Abstract An absolute timescale for evolution is essential if we are to associate evolutionary phenomena, such as adaptation or speciation, with potential causes, such as geological activity or climatic change. Timescales in most phylogenetic studies use geologically dated fossils or phylogeographic ..."
Abstract
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Cited by 6 (1 self)
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or phylogeographic events as calibration points, but more recently, it has also become possible to use experimentally derived estimates of the mutation rate as a proxy for substitution rates. The large radiation of drosophilid taxa endemic to the Hawaiian islands has provided multiple calibration points
Torsion of the symmetric algebra and implicitization
- 1855–1865. AND NONLINEAR EQUATIONS OF REES ALGEBRA 19
"... Abstract. Recently, a method to compute the implicit equation of a parametrized hypersurface has been developed by the authors. We address here some questions related to this method. First, we prove that the degree estimate for the stabilization of the MacRae’s invariant of Sym A (I)ν is optimal. Th ..."
Abstract
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Cited by 15 (4 self)
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. Then, we show that the extraneous factor that may appear in the process splits into a product a linear forms in the algebraic closure of the base field, each linear form being associated to a non complete intersection base point. Finally, we make a link between this method and a resultant computation
On-line Bayesian estimation of AR signals in symmetric . . .
, 2004
"... In this paper we propose an on-line Bayesian filtering and smoothing method for time series models with heavy-tailed #-stable noise, with a particular focus on TVAR models. #-stable processes have been shown in the past to be a good model for many naturally occurring noise sources, see e.g. [1, ..."
Abstract
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Cited by 8 (2 self)
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In this paper we propose an on-line Bayesian filtering and smoothing method for time series models with heavy-tailed #-stable noise, with a particular focus on TVAR models. #-stable processes have been shown in the past to be a good model for many naturally occurring noise sources, see e.g. [1
Computing the Eigen Decomposition of a Symmetric Matrix in Fixed-Point Arithmetic
, 2001
"... Since a number of signal processing algorithms requiring the EVD of a symmetric matrix are implemented on fixedpoint DSPs, there is considerable interest in matrix diagonalization algorithms that can be implemented in fixed-point arithmetic. We propose modifications to the Jacobi Cyclic Row algorith ..."
Abstract
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Cited by 4 (1 self)
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Since a number of signal processing algorithms requiring the EVD of a symmetric matrix are implemented on fixedpoint DSPs, there is considerable interest in matrix diagonalization algorithms that can be implemented in fixed-point arithmetic. We propose modifications to the Jacobi Cyclic Row
Results 1 - 10
of
465
