Georgia College & State University

About: Georgia College & State University is a education organization based out in Milledgeville, Georgia, United States. It is known for research contribution in the topics: Population & Context (language use). The organization has 950 authors who have published 1591 publications receiving 37027 citations.

Ratio of S factors for (p,γ) reactions on 12 C and 13 C at astrophysically relevant energies

Abstract: We present measurements of the ${}^{12}\mathrm{C}(p,{\ensuremath{\gamma}}_{0}{)}^{13}\mathrm{N}{/}^{13}\mathrm{C}(p,{\ensuremath{\gamma}}_{0}{)}^{14}\mathrm{N}$ S factor ratio at ${E}_{p}=160 \mathrm{keV}.$ The overall result of $0.33\ifmmode\pm\else\textpm\fi{}0.03$ is in good agreement with the value of this ratio obtained from previous experimental values of the S factors for the ${}^{12}\mathrm{C}(p,{\ensuremath{\gamma}}_{0}{)}^{13}\mathrm{N}$ and the ${}^{13}\mathrm{C}(p,{\ensuremath{\gamma}}_{0}{)}^{14}\mathrm{N}$ reactions. A value for the total S factor ratio of $S{[}^{12}\mathrm{C}(p,{\ensuremath{\gamma}}_{\mathrm{total}})]/S{[}^{13}\mathrm{C}(p,{\ensuremath{\gamma}}_{\mathrm{total}})]=0.24\ifmmode\pm\else\textpm\fi{}0.03$ is computed by correcting the ${}^{13}\mathrm{C}(p,{\ensuremath{\gamma}}_{0})$ S factor for transitions to the other intermediate states. The direct + resonance model calculation of this ratio and the impact on the CNO cycle are also explored.

Mechanisms linking mindfulness and early smoking abstinence: An ecological momentary assessment study.

Abstract: Research has suggested that individuals with greater dispositional mindfulness (i.e., nonjudgmental, present-focused attention) are more likely to quit smoking, but the underlying mechanisms are unclear. This study investigated mechanisms linking mindfulness and early smoking abstinence using ecological momentary assessment (EMA). Participants were 355 smokers (33% Caucasian, 33% African American, 32% Latino; 55% female) receiving smoking cessation treatment. Mindfulness was assessed at baseline and on the quit date. For 4 days prequit and 1 week postquit, participants completed up to 4 EMAs per day indicating levels of negative affect (NA), positive affect (PA), smoking urges, and affect regulation expectancies. Mean, slope, and volatility were calculated for each prequit and postquit EMA variable. Associations among mindfulness, EMA parameters, and abstinence on the quit day and 7 days postquit, as well as indirect effects of mindfulness on abstinence through EMA parameters, were examined. Mindfulness predicted higher odds of abstinence in unadjusted but not covariate-adjusted models. Mindfulness predicted lower NA, higher PA, and lower affective volatility. Lower stress mediated the association between mindfulness and quit-day abstinence. Higher ratings of happy and relaxed, and lower ratings of bored, sad, and angry, mediated the association between mindfulness and postquit abstinence. Mindfulness appeared to weaken the association between craving and postquit abstinence. This study elucidates real-time, real-life mechanisms underlying dispositional mindfulness and smoking abstinence. During the early process of quitting smoking, more mindful individuals appeared to have more favorable emotional profiles, which predicted higher likelihood of achieving abstinence 1 week after the quit date. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Electronic structure and bulk modulus of silicon dicarbide: a glitter phase

Abstract: A hypothetical, metallic and hard three-dimensional extended structure is described with the chemical formula SiC 2 . This structure is achieved by replacing the tetrahedral carbon atoms in the previously described glitter lattice with tetrahedral silicon atoms. The new structure, like the parent carbon allotrope glitter, has polymeric substructures that can be carved from the three-dimensional extended structure. These substructures, which make use of the 1,4-disila-2,5-cyclohexadiene (1,4-disilaquinoid) moiety as a common theme, are of a polyquinoid, polyspiroquinoid and polyparaquinoid (polycyclophane) nature. Oligomers of the poly-1,4-disilaquinoid and poly-1,4-disilaspiroquinoid substructures have been synthesized in the laboratory and some of their properties have been investigated. The present report describes theoretical calculations, at the semi-empirical (EHMO) and density functional (DFT) level of theory, of the electronic structure of the three-dimensional SiC 2 lattice and of the synthetically realized poly-1,4-disilaspiroquinoid oligomers. It is seen that a relatively high-lying carbon–silicon σ level causes the ordinarily insulated π and π* levels in SiC 2 to be bridged, so that a conducting, metallic system is achieved. Finally, the bulk modulus of the three-dimensional SiC 2 structure is evaluated at zero pressure using a semi-empirical formula developed by Cohen. The zero-pressure bulk modulus of SiC 2 is one of the highest known in crystalline materials at 230 GPa. The zero-pressure bulk modulus of silicon dicarbide is comparable to that observed in the commonly used industrial abrasive called carborundum (SiC), which has an experimental zero-pressure bulk modulus of 211 GPa. In addition, it is estimated that the bulk modulus at pressure of the silicon dicarbide lattice can attain values in excess of 545 GPa by a mechanism of harmonic compression which has been described earlier for glitter.

The stationarity of inflation in Croatia: anti-inflation stabilization program and the change in persistence

Abstract: This study examines the impact of the anti-inflation stabilization policies on the behavior of inflation in Croatia in the early 1990s and through the subsequent post-stabilization period using fractional integration techniques. Indeed, the implementation of the stabilization program in October 1993 brought immediate deflation with a relative high degree of inflation stability in the post-stabilization period. With allowance for a structural break corresponding to the stabilization program in October 1993, the degree of persistence was substantially reduced with the fractional differencing parameter being positive but close to zero in the post-stabilization period.