Flow tracing fidelity of scattering aerosol in laser Doppler velocimetry

An experimental method for determinating the flow tracing fidelity of a scattering aerosol used in laser Doppler velocimeters was developed with particular reference to the subsonic turbulence measurements. The method employs the measurement of the dynamic response of a flow seeding aerosol excited by acoustic waves. The amplitude and frequency of excitation were controlled to simulate the corresponding values of fluid turbulence components. Experimental results are presented on the dynamic response of aerosols over the size range from 0.1 to 2.0 microns in diameter and over the frequency range 100 Hz to 100 kHz. It was observed that unit density spherical scatterers with diameters of 0.2 microns followed subsonic air turbulence frequency components up to 100 kHz with 98 percent fidelity

Automated Reconstruction of Particle Cascades in High Energy Physics Experiments

We present a procedure for reconstructing particle cascades from event data measured in a high energy physics experiment. For evaluating the hypothesis of a specific physics process causing the observed data, all possible reconstruction versions of the scattering process are constructed from the final state objects. We describe the procedure as well as examples of physics processes of different complexity studied at hadron-hadron colliders. We estimate the performance by 20 microseconds per reconstructed decay vertex, and 0.6 kByte per reconstructed particle in the decay trees.Comment: 8 pages, 2 figures. Submitted to Computational Science & Discover

The Use of Agents in International Student Recruitment: International Education Professional’s Opinions

The use of recruitment agents in international student recruitment is a controversial topic with divisive and differing opinions among international education and higher education professionals. This paper researches international educator’s opinions on the use of recruitment agents in international education and explores the idea of a framework to regulate their use. A survey was sent out to international educators across the United States. 119 respondents gave their opinions on the use of agents and provided a valuable snapshot of the current outlook on the ethics and necessity of the use of agents

The Influence of Social Contagion and Technology on Epidemic Non-Suicidal Self-Injury

Non-suicidal self-injury (NSSI) is the deliberate damaging of one’s body without the intention of suicide (Nock & Favazza, 2009). NSSI can cause serious medical consequences and is associated with psychological impairment or distress in day-to-day functioning. When this type of pathological behavior occurs in inpatient settings, the behavior has been known to spread from patient to patient (Taiminen, Kallio-Soukainen, Nokso-Koivisto, Kaljonen, & Helenius, 1998). Recent internet-based research has shown that online forums have become a place for people to find social connections based on pathology (Whitlock, Powers, & Eckenrode, 2006). Christakis and Fowler (2009) showed that thoughts, actions, and feelings spread in epidemic-like-patterns through social networks and have determined the patterns and properties of this type of social influence. Because of the nature of the NSSI pathology, it seems to be the case that these rules will also govern the spread of NSSI contagion and therefore, these findings can be used to intervene by predicting who is most at risk and providing them with “inoculating” resources