This paper provides an overview and a tutorial of molecular clock dating using MrBayes, which is a software for Bayesian inference of phylogeny. Two modern approaches, total-evidence dating and node dating, are demonstrated using a dataset of Hymenoptera with molecular sequences and morphological characters. The similarity and difference of the two methods are compared and discussed. Besides, a...

Youth emancipating from foster care have been found to be at higher risk for many adverse outcomes. Only one prior published study exists, however, about the dating violence experiences of foster youth. Asking similar questions about dating violence, this study attempted to replicate the prior findings regarding prevalence and to explore associations between foster care placement history, maltr...

This study addressed how two normative developmental factors, attachment and identity, are associated with adolescents' sexual attitudes and sexual risk-taking behavior. The sample consisted of 2029 adolescents (mean age = 16.2 years) living in the Southeast United States. Path analysis was used to test the hypotheses. Higher levels of attachment anxiety predicted more dating identity explorati...

Online dating systems are used by millions of people every year to find a romantic partner, yet many of these users report feeling frustrated by the online dating process. This paper presents an interview study in-progress of online dating system use. Findings from 35 users of a popular online dating system in the United States indicate that, contrary to previous research, users typically do no...

The collective influence of identity styles and romantic attachment insecurity on psychological dating aggression was examined for 1,975 adolescents living in a southern state of the United States. Informational identity style related negatively to psychological dating aggression, but anxious romantic attachment related positively to this behavior. Diffuse-avoidant identity style and using psyc...

In this paper, we empirically investigate the relationship between oil price changes and output in a group of oil exporting countries. The dynamics of business cycles in Libya, Saudi Arabia, Nigeria, Kuwait, Venezuela and Qatar are modeled by alternative regime switching models. We show that the extension of uni-variate Markov Switching model in order to include oil revenue improves dating busi...

This study examined relationship power as a possible mediator of the relationship between dating violence and sexually transmitted infections (STIs). The proposed mediation model was based on the theory of gender and power as well as previous research on intimate partner violence and STI risk. Survey results from a sample of 290 single, undergraduate women indicated that 85% experienced at leas...

Dating violence is an important public health concern and is considered to be a form of school violence. While digital technologies have enabled perpetrators of dating violence to target their victims online (cyber dating abuse), little is known about how this form of perpetration relates to specific adolescent risk behaviors. This brief research report focuses on the associations between subst...

Soil-geomorphic studies indicate that six major allostratigraphic units occur in Crater Flat, Nevada, adjacent to Yucca Mountain. These units are, from youngest to oldest, Crater Flat, Little Cones, Late Black Cone, Early Black Cone, Yucca, and Solitario. Presence and degree of differentiation of Av, Ak, Bw, Bt, Btk, Btkq, and Bqkm genetic soil horizons characterize units, confirm relative ages...