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R C Underwood

Publications and source records attributed to R C Underwood.

2 recordsLinked to original sources

Do sexual offenders molest when other persons are present? A preliminary investigation.

This study utilized a rough clinical survey to assess the prevalence of child molestation perpetrated in the presence of other non-collaborating persons. Survey data were gathered on 131 post-incarcerated adult sex offenders at two community treatment programs. Subjects were divided into two groups, child molesters (CMs) and nonmolesters (NCMs). Results indicated that 54.9% of the CMs had molested when another child was present, 23.9% had molested when another adult was present, and 14.2% had molested when both a child and an adult were present. Both groups implicated increased excitement, a sense of mastery, and compulsive sexual behavior as the reasons for this type of offense. Moreover, the data indicated that approximately 63% of the offenders who had not molested in the presence of other persons felt they may have progressed to that point had they not been arrested and placed in treatment. Limitations of the study are discussed.

Adult↗

Stochastic context-free grammars for tRNA modeling.

Stochastic context-free grammars (SCFGs) are applied to the problems of folding, aligning and modeling families of tRNA sequences. SCFGs capture the sequences' common primary and secondary structure and generalize the hidden Markov models (HMMs) used in related work on protein and DNA. Results show that after having been trained on as few as 20 tRNA sequences from only two tRNA subfamilies (mitochondrial and cytoplasmic), the model can discern general tRNA from similar-length RNA sequences of other kinds, can find secondary structure of new tRNA sequences, and can produce multiple alignments of large sets of tRNA sequences. Our results suggest potential improvements in the alignments of the D- and T-domains in some mitochondrial tRNAs that cannot be fit into the canonical secondary structure.

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