A new type of nuclear collective motion - the spin scissors mode

The coupled dynamics of low lying modes and various giant resonances are studied with the help of the Wigner Function Moments method on the basis of Time Dependent Hartree-Fock equations in the harmonic oscillator model including spin-orbit potential plus quadrupole-quadrupole and spin-spin residual interactions. New low lying spin dependent modes are analyzed. Special attention is paid to the spin scissors mode.Comment: 21 page

Orbital and spin scissors modes in superfluid nuclei

Nuclear scissors modes are considered in the frame of Wigner function moments method generalized to take into account spin degrees of freedom and pair correlations simultaneously. A new source of nuclear magnetism, connected with counter-rotation of spins up and down around the symmetry axis (hidden angular momenta), is discovered. Its inclusion into the theory allows one to improve substantially the agreement with experimental data in the description of energies and transition probabilities of scissors modes in rare earth nuclei.Comment: arXiv admin note: text overlap with arXiv:1301.251

Mental health literacy: The knowledge of mental health literacy and help-seeking attitudes among NCAA Division I student-athletes and non-athletes

Context: By the age of 24 years, diagnosable mental disorders begin to develop in one out of four Americans (Kaier et al., 2015). Young people also have deficits in knowledge about mental health literacy. This deficiency is one reason why individuals lack the ability to recognize mental illness and the appropriate measures needed to take to seek professional help (Kelly et al., 2007). This study investigates the mental health literacy and help-seeking attitudes of NCAA Division I student-athletes and non-athletes. Objective: Investigate the knowledge of mental health literacy and help-seeking attitudes of collegiate student-athletes and non-athletes. Design: Non-experimental, correlation and descriptive design. Participants: 444 participants (227 males, 212 females, 5 other) with a mean age of 20.07 (SD = 2.53). Methods: Participants were recruited during designated class times or team meetings. Participants completed a one-time survey consisting of a demographics form, Mental Health Literacy Scale (MHLS), and Attitudes Towards Seeking Professional Psychological Help-Short Form (ATSPPH-SF). Main Outcome Measures: Mental health literacy was measured by the MHLS. Attitudes towards help-seeking were measured by the ATSPPH-SF. Results: A MANOVA revealed significant differences by gender and mental health literacy (p \u3c .0001). An ANOVA revealed significant differences by gender and help-seeking attitudes (p \u3c .0001). A MANOVA revealed significant differences by gender and athletic status on mental health literacy (p \u3c .0001). An ANOVA revealed significant differences gender and athletic status on help-seeking attitudes (p \u3c .0001). A MANOVA revealed significant differences on previous mental health history and mental health literacy (p \u3c .0001). An ANOVA revealed significant differences on previous mental health history and help-seeking attitudes (p \u3c .0001). Conclusion: Student-athletes and non-athletes had above average levels of mental health literacy. The results of the study found significant differences on the MHLS and ATSPPH-SF based on gender, gender and athletic status, and previous mental health history. The results from this study can aid clinicians in the development of educational programs on mental illness for college students and student athletes as well as implementing more extensive questionnaires regarding mental health on pre-participation exams and throughout the rehabilitation process

Nuclear Pairing in the T=0 channel revisited

Recent published data on the isoscalar gap in symmetric nuclear matter using the Paris force and the corresponding BHF single particle dispersion are corrected leading to an extremely high proton-neutron gap of $\Delta \sim 8$ MeV at $\rho \sim 0.5\rho_0$. Arguments whether this value can be reduced due to screening effects are discussed. A density dependent delta interaction with cut off is adjusted so as to approximately reproduce the nuclear matter values with the Paris force.Comment: 4 pages, 4 figure

FARMER EDUCATION AND ADOPTION OF SLASH AND BURN AGRICULTURE

Education can play a critical role in moving farmers in developing countries away from environmentally harmful slash and burn agriculture. The present research examines the extent to which extension education can promote adoption of cropping systems other than slash and burn. Choice of cropping system by farmers in Cameroon, whether slash and burn, multiple crops, or mono-cropping, is modeled as a function of farm size, farmer educational level, and visits by extension personnel. Results indicate that higher visitation rates by extension personnel reduce not only the likelihood of farmers choosing slash and burn agriculture, but also promotes movement into mono-cropping. Since mono-cropping represents a move toward export-oriented agriculture in Cameroon, this movement may assist in promoting greater economic development across western Africa. Continued efforts in extension education are, therefore, critical in both reducing the environmental damage from slash and burn agriculture and promoting adoption of more profitable cropping systems.conservation, slash and burn, production technology, economic development, Farm Management,

Tracking Vector Magnetograms with the Magnetic Induction Equation

The differential affine velocity estimator (DAVE) developed in Schuck (2006) for estimating velocities from line-of-sight magnetograms is modified to directly incorporate horizontal magnetic fields to produce a differential affine velocity estimator for vector magnetograms (DAVE4VM). The DAVE4VM's performance is demonstrated on the synthetic data from the anelastic pseudospectral ANMHD simulations that were used in the recent comparison of velocity inversion techniques by Welsch (2007). The DAVE4VM predicts roughly 95% of the helicity rate and 75% of the power transmitted through the simulation slice. Inter-comparison between DAVE4VM and DAVE and further analysis of the DAVE method demonstrates that line-of-sight tracking methods capture the shearing motion of magnetic footpoints but are insensitive to flux emergence -- the velocities determined from line-of-sight methods are more consistent with horizontal plasma velocities than with flux transport velocities. These results suggest that previous studies that rely on velocities determined from line-of-sight methods such as the DAVE or local correlation tracking may substantially misrepresent the total helicity rates and power through the photosphere.Comment: 30 pages, 13 figure

BENEFITS OF CONTROLLING SALINE WATER IN COLORADO

The Arkansas River in Colorado is confronted with a salinity issue; the majority of this salinity problem is due to agricultural runoff caused by irrigation. Reducing applications of irrigation water through adoption of more technically efficient irrigation systems is one means of improving water quality in the Arkansas River basin. This research uses positive mathematical programming to model the cropping practices of the farms along the Arkansas River. It examines the affect of acreage and profit levels of these farms given the choice of changing their irrigation technologies.Environmental Economics and Policy,