Practical Student Self-affirmation

This research paper focuses on student peer interactional relationships in a tertiary level classroom setting in Japan. The research is based on the use of one piece of technology, Microsoft PowerPoint, to illustrate student peer interactional relationships during presentation tasks throughout the 2015 Spring Semester. The application of the particular software used in this research is of little importance, in that any piece of software could be used to investigate student interaction. The important findings of this research indicate that students can be made aware of their self-affirmation through an application of sociolinguistics and an introduction of critical pedagogy that encompasses a significant reduction in the influence of the traditional ‘teacher’ role to the benefit of student empowerment. The role of the student changes from being the passive object to that of a more active Subject role, as that of the ‘teacher,’ or better termed ‘facilitator,’ dispenses their traditional paternalistic, authoritative Subject position, in favor of being one that helps to bring about ‘…an outcome (as learning, productivity, or communication) by providing indirect or unobtrusive assistance, guidance, or supervision,’ on the part of the ‘facilitator,’ as it is defined in the Miriam-Webster dictionary (2015). For students to adopt a more active role requires a change in study habits, which requires more effort. However, this adheres perfectly to the Kyoai College motto; ‘You can develop your ability though it might be hard’ (Kyoai, 2015)

Hydrodynamic interaction in quasi-two-dimensional suspensions

Confinement between two parallel surfaces is found, theoretically and experimentally, to drastically affect the hydrodynamic interaction between colloid particles, changing the sign of the coupling, its decay with distance and its concentration dependence. In particular, we show that three-body effects do not modify the coupling at large distances as would be expected from hydrodynamic screening.Comment: 8 pages, 2 figure

Correlated particle dynamics in concentrated quasi-two-dimensional suspensions

We investigate theoretically and experimentally how the hydrodynamically correlated lateral motion of particles in a suspension confined between two surfaces is affected by the suspension concentration. Despite the long range of the correlations (decaying as 1/r^2 with the inter-particle distance r), the concentration effect is present only at short inter-particle distances for which the static pair correlation is nonuniform. This is in sharp contrast with the effect of hydrodynamic screening present in unconfined suspensions, where increasing the concentration changes the prefactor of the large-distance correlation.Comment: 13 page

Multi-Particle Collision Dynamics -- a Particle-Based Mesoscale Simulation Approach to the Hydrodynamics of Complex Fluids

In this review, we describe and analyze a mesoscale simulation method for fluid flow, which was introduced by Malevanets and Kapral in 1999, and is now called multi-particle collision dynamics (MPC) or stochastic rotation dynamics (SRD). The method consists of alternating streaming and collision steps in an ensemble of point particles. The multi-particle collisions are performed by grouping particles in collision cells, and mass, momentum, and energy are locally conserved. This simulation technique captures both full hydrodynamic interactions and thermal fluctuations. The first part of the review begins with a description of several widely used MPC algorithms and then discusses important features of the original SRD algorithm and frequently used variations. Two complementary approaches for deriving the hydrodynamic equations and evaluating the transport coefficients are reviewed. It is then shown how MPC algorithms can be generalized to model non-ideal fluids, and binary mixtures with a consolute point. The importance of angular-momentum conservation for systems like phase-separated liquids with different viscosities is discussed. The second part of the review describes a number of recent applications of MPC algorithms to study colloid and polymer dynamics, the behavior of vesicles and cells in hydrodynamic flows, and the dynamics of viscoelastic fluids

2006 Dayton Area Drug Survey Shows Decline in Teen Drug Use Continues

Results from the 2006 Dayton Area Drug Survey (DADS) show that the decline in drug use among adolescents in the Miami Valley, first noted in 2002, has continued. These findings are consistent with those from national studies which have also shown declining drug use among young people. Although there were declines in virtually all categories of drug use, the largest decreases were seen with cigarettes. Overall, the results are good news for all concerned about the health, safety, and welfare of young people. Nevertheless, the results also show that drug abuse remains a serious problem for many teens here in the Dayton area

Results from 2010 Dayton Area Drug Survey Suggest Long-Running Decline in Substance Abuse Among Teens is Reversing

Results from the 2010 Dayton Area Drug Survey (DADS) suggest the long-running trend of declining drug use by teens may be ending. For example, the percentage of 12th grade students reporting ever having been drunk increased from 54.3 percent in 2008 to 55.2 percent in 2010, with similar sized increases occurring for 7th and 9th graders as well. For the first time in many years, the percentage of teens reporting experience with cigarettes and smokeless tobacco increased. Marijuana initiation also increased over 2008 levels. And while the increases were generally small, they may be a harbinger of an upward swing in youthful drug use. The 2010 results were presaged by the mixed news from the 2008 DADS where it appeared the decline in the initiation of use had stalled with high school seniors. Notably, there are epidemiological indicators from several recent national surveys that also suggest the decline has leveled out and may be tilting upwards, at least for some drugs. Consequently, what is happening here in the Dayton area may be part of a national trend

Results from 2008 Dayton Area Drug Survey Offer Mixed News

Results from the 2008 Dayton Area Drug Survey (DADS) are mixed. The good news is that data from seventh and ninth grade students show that the general decline in the initiation of drug use noted in previous years has continued. Less encouraging are data from high school seniors suggesting that, among these older students, the decline may have stalled, at least for some drugs. Overall, the largest declines in drug use initiation occurred with alcohol and cigarettes. Even so, these drugs, along with marijuana, are still the ones most commonly abused by area school-aged teens