35 research outputs found

    Methods for Temporal Analysis

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    The authors review sociological literature describing different perspectives and uses of studies of change in discrete (qualitative) and quantitative outcomes. They show that, contrary to many injunctions, temporal analysis is not always superior to cross-sectional analysis for studying change, particularly for two-wave panel measures. The main factor is whether confounding influences vary more over time than over measured outcomes. Modeling change processes and event history methods use more of the data and provide a better picture of change using temporal data

    Quality of Maximum Likelihood Estimates of Parameters in a Log-Linear Rate Model

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    The authors address four sources of indeterminacy in maximum likelihood estimation (MLE) for multivariate modeling of change using panel data: censoring, caused by changes that occur after the observation period ends; small sample size; interacting censoring with sample size; and collinearity among causal variables. They explore the issues with simulations and conclude that MLE estimates are generally efficient except when censoring is extreme, and efficiency is only slightly affected by collinearity among independent variables. Related publications include Tuma and Hannan (1979) and Tuma, Hannan, and Groeneveld (1979)

    Alternative Estimation Procedures for Event-History Analysis: A Monte Carlo Study

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    The authors compare alternative procedures for estimating parameters of event-history models: ordinary least squares, Kaplan-Meier least squares, maximum likelihood, and partial likelihood. They report results of simulations comparing maximum likelihood and partial likelihood estimators for small samples in terms of several potential sources of error. A related paper is Tuma, Hannan, and Groeneveld (1979)

    Militarization and social development in the Third World

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    In this study we integrated the modernization and dependency theories of development to suggest the ways whereby militarization can affect development. We examined the effects of three components of militarization highlighted in these theories on the social development of ninety-two developing countries. Overall, our findings support the dependency theory's emphasis on the detrimental impact of international trade on disadvantaged nations. There is a significant negative correlation between arms import and social development. Arms export and indigenous spending are correlated with social development in the expected directions but their beta coefficients are not significant. The diverse ways these three aspects of militarization have been shown to affect social development help to explain some of the conflicting findings in the literature and point to the need to study these variables in their disaggregated form.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/69141/2/10.1177_144078339503100105.pd

    Adolescent Noncompliance And Occupational Attainment In Transitional Societies

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    The rapid accumulation of biological network data is creating an urgent need for computational methods capable of integrative network analysis. This paper discusses a suite of algorithms that we have developed to discover biologically significant patterns that appear frequently in multiple biological networks: coherent dense subgraphs, frequent dense vertex-sets, generic frequent subgraphs, differential subgraphs, and recurrent heavy subgraphs. We demonstrate these methods on gene co-expression networks, using the identified patterns to systematically annotate gene functions, map genome to phenome, and perform high-order cooperativity analysis. © 2011 The Author(s)

    Applications of event history analysis in life course research

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    Applications of event history analysis in life course research

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