Ericka L. Daniels - Distinguishing between Risk Factors for Aggression Perpetration, and Victimization in Adolescent Dating Relationships

Objective: Aggression in adolescent romantic relationships occurs at a substantial rate and has negative effects on victims. This study will investigate risk factors that may anticipate a person’s role as a victim or perpetrator of aggression in dating relationships. Also, this study will examine whether males or females are more likely to perpetrate or be victimized by dating aggression. Expanding research on relationship aggression is important because TDV can cause significant mental and physical health problems (e.g. distress, physical injuries, and panic attacks). We focused on risk factors in four general categories: family, cognitions, emotions, and alcohol use. Some of these risk factors include: exposure to relationship violence, whether between the child and a parent or between parents, internalizing cognitions and behaviors, depressive symptoms, alcohol use, and hostility. Methods: Participants were undergraduate students from a private institution. Data was collected through a number of questionnaires completed online. Results: We found that majority of the predictors were common to both victimization and perpetration, such as alexithymia, callous, interparental and parent-child conflict. We also found unique predictors of both victimization and perpetration, which were alcohol use, and relationship quality with one’s partner. Also, attitudes accepting and justifying dating aggression uniquely predicted perpetration only. Conclusion: Our findings suggest that each unique predictor should be considered when developing strategies to reduce or prevent aggression in romantic relationships. Our study implies that couples should use alcohol moderately, find satisfaction in one’s relationship partner, and evaluate one’s beliefs about dating aggression in order to avoid TDV.https://epublications.marquette.edu/mcnair_2013/1011/thumbnail.jp

The effect of ultraviolet radiation on the intensity of luminescence

Effect of ultraviolet radiation on intensity of luminescenc

Infrared Spectral Emittance of Rocks from the Pisgah Crater and Mono Craters Areas, California

Infrared spectral emittance of natural rock surface from Pisgah Crater and Mono Craters area in Californi

Universal shapes formed by two interacting cracks

We investigate the origins of the widely-observed "en passant" crack pattern which forms through interactions between two approaching cracks. A rectangular elastic plate is notched on each long side and then subjected to quasistatic uniaxial strain from the short side. The two cracks propagate along approximately straight paths until they pass each other, after which they curve and release a lenticular fragment. We find that for materials with diverse mechanical properties, the shape of this fragment has an aspect ratio of 2:1, with the length scale set by the initial crack offset $s$ and the time scale set by the ratio of $s$ to the pulling velocity. The cracks have a universal square root shape which we understand using a simple geometric model of the crack-crack interaction

Liquid nitrogen blackbody for spectral emittance studies

Cryogenic black body used in spectral emittance of rock

How to make the fourth revolution: Human factors in the adoption of electronic instructional aids

The prospects and problems of getting higher education in the United States (high school and above) to more fully utilize electronic technologies are examined. Sociological, psychological, and political factors are analyzed to determine the feasibility of adopting electronic instructional techniques. Differences in organizations, attitudes, and customs of different kinds of students, teachers, administrators, and publics are crucial factors in innovation

Propagating Waves in a Monolayer of Gas-Fluidized Rods

We report on an observation of propagating compression waves in a quasi-two-dimensional monolayer of apolar granular rods fluidized by an upflow of air. The collective wave speed is an order of magnitude faster than the speed of the particles. This gives rise to anomalously large number fluctuations dN ~ $N^{0.72 \pm 0.04}$, which are greater than ordinary number fluctuations of N^{1/2}. We characterize the waves by calculating the spatiotemporal power spectrum of the density. The position of observed peaks, as a function of frequency w and wavevector k, yields a linear dispersion relationship in the long-time, long-wavelength limit and a wavespeed c = w/k. Repeating this analysis for systems at different densities and air speeds, we observe a linear increase in the wavespeed with increasing packing fraction with no dependence on the airflow. Although air-fluidized rods self-propel individually or in dilute collections, the parallel and perpendicular root-mean-square speeds of the rods indicate that they no longer self-propel when propagating waves are present. Based on this mutual exclusivity, we map out the phase behavior for the existence of waves vs self-propulsion as a function of density and fluidizing airflow

Using Arcane Data: Past Performance in NASA Sciences Principal Investigator (PI) Development Programs and Improving Future Peer Review for Space Flight Missions

This panel will explore challenges and initial findings from three qualitative studies that use the National Aeronautics and Space Administration's (NASA) Science Mission Directorate's(SMD) internal administrative data to begin to assess program effectiveness and document outputs and outcomes. SMD has funded both at and outside NASA, projects that promotethe development of SMD's future principal investigators (PI) workforce and science and technology investigations on space flight missions that advance the high priority science,technology, and exploration objectives. NASA's internal administrative data are arcane because they developed outside of relational databases. The studies reveal unique challenges to locating and using these data to document effective program processes, i.e.,peer review criteria for large flight missions, and results from the PI-development projects,e.g. the Hands-On Project Experience (HOPE) Training Opportunity solicitations limited to NASA Centers the Jet Propulsion Laboratory; and graduate student/postdoctoral opportunities at higher education institutions