Thermodynamic properties of UF6 at high temperatures

The equilibrium composition and the thermodynamic properties of the mixture resulting from the decomposition of uranium hexafluoride is calculated for temperatures ranging from 600 K to 4000 K at pressures from 0.01 atmospheres to 10 atmospheres

Analysis of plasmas generated by fission fragments

A kinetic model is developed for a plasma generated by fission fragments and the results are employed to study helium plasma generated in a tube coated with fissionable material. Because both the heavy particles and electrons play important roles in creating the plasma, their effects are considered simultaneously. The calculations are carried out for a range of neutron fluxes and pressures. In general, the predictions of the theory are in good agreement with available intensity measurements. Moreover, the theory predicts the experimentally measured inversions. However, the calculated gain coefficients are such that lasing is not expected to take place in a helium plasma generated by fission fragments. The effects of an externally applied electric field are also considered

The electron Boltzmann equation in a plasma generated by fission fragments

A Boltzmann equation formulation is presented for the determination of the electron distribution function in a plasma generated by fission fragments. The formulation takes into consideration ambipolar diffusion, elastic and inelastic collisions, recombination and ionization, and allows for the fact that the primary electrons are not monoenergetic. Calculations for He in a tube coated with fissionable material show that, over a wide pressure and neutron flux range, the distribution function is non-Maxwellian, but the electrons are essentially thermal. Moreover, about a third of the energy of the primary electrons is transferred into the inelastic levels of He. This fraction of energy transfer is almost independent of pressure and neutron flux but increases sharply in the presence of a sustainer electric field

Changing Attitudes toward LGBT Students: An Analysis of an Awareness Training Paradigm Aimed at Increasing Pro-LGBT Attitudes

This paper examines potential diversity training techniques designed to increase awareness about LGBT individuals in an attempt to foster more pro-LGBT attitudes in a college sample. The study utilized a biological, a social, and a combined approach to increase awareness. Based on the results of the training, it appears that college students’ attitudes may be negatively impacted by overt training mechanisms. However, many college students know and regularly associate with LGBT friends and family. Implications for contact training and increasing awareness on college campuses are discussed, as well as the potential for backlash from training attempts

A Systematic Approach for the Analytical Analysis and Prediction of the Yield From Liquid Propellant Explosions

This paper presents a systematic approach by which the expected yield from liquid propellants can be predicted and furthermore gives an insight into the physical phenomena involved. The yield potential and the mixing function can be determined allowing for the type of propellants, their relative proportions, the reaction rates between the components depending upon mixture composition, the heat transfer rates between the components and the propellants and the surroundings, the mode of failure and the resulting mixing characteristics, and the ignition and reaction delay times. Combining the above information into seven charts as presented leads to a systematic analytical determination of the expected yield

Working with adoptive families in educational settings : creating positive attitudes and developing inclusive practices

Diversity in educational settings exists beyond racial and cultural definitions. Family diversity is also an important concept in education. However, the needs of adoptive families have rarely been addressed in schools, and considerable research suggests that adoptive family members experience social stigma. Accordingly, this review of the literature examines attitudes toward adoption, including research revealing the perceptions of adoptive family members, as well as research on community attitudes, attitudes of students, and attitudes of professional educators. The review continues by addressing the foundations for these attitudes in American family ideology, theory and research on adoption, practices in social work, and media representations of adoption. Research on positive outcomes in adoption is also presented for a balanced view of adoptive children and families, and the plausible effects of social stigma in educational settings are explored. The study culminates with a discussion of effective educational practices for teachers and administrators to implement to effectively counter social stigma in educational settings, as well as suggestions for educator preparation programs and future research

A study of denotative similarity with restricted word associations

Data for this study were collected in two parts. In the first, 70 Ss responded to a list of stimuli in seven tasks of restricted association. The second part of the study employed stimuli consisting of 11 of these original stimuli plus their primary responses in each of the seven tasks. These were given to 50 new Ss under the same seven task instructions. The seven tasks were Superordinates, Coordinates, Similars, Contrasts, Functions, Qualities, and Parts. The main analysis of data was the derivation of matrices of response overlap for the seven semantic relationships corresponding to the restricted-association tasks.Primary interest centered on similarity relationships. High overlap along the diagonal of the response-overlap matrix characterized the Similars. Overlap in five of these diagonal cells was found to discriminate Similars from the other relationships. A measure of the degree of Restricted-Association Similarity (RAS) was derived, based on this discriminating overlap.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/33281/1/0000673.pd

False claims about false memory research

Pezdek and Lam [Pezdek, K. & Lam, S. (2007). What research paradigms have cognitive psychologists used to study “False memory,” and what are the implications of these choices? Consciousness and Cognition] claim that the majority of research into false memories has been misguided. Specifically, they charge that false memory scientists have been (1) misusing the term “false memory,” (2) relying on the wrong methodologies to study false memories, and (3) misapplying false memory research to real world situations. We review each of these claims and highlight the problems with them. We conclude that several types of false memory research have advanced our knowledge of autobiographical and recovered memories, and that future research will continue to make significant contributions to how we understand memory and memory errors