June versus March Calving for the Nebraska Sandhills: Economic Comparisons

Costs and returns of June and March calving systems were compared at four production phases. Financial costs of the June system were lowest, due primarily to lower costs of producing a weaned calf. Post-weaning financial and economic costs at each phase were nearly identical. Selling June-born steer calves at January weaning would double net returns compared to selling March-born steer calves at October weaning due to lower costs and higher market prices. Net returns for June-born steer calves retained beyond weaning are highest if calves are retained as yearlings and finished. Calves finished as calf-feds provided the highest net returns for the March calving system

Assessing Male vs. Female Business Student Perceptions of Plagiarism at a Southern Institution of Higher Education

Plagiarism, cheating, and academic dishonesty affect institutions of higher education. This study examines student perceptions of plagiarism within a Southern, Division-II teaching institution. This study employed a five-point Likert-scale to examine differences of perceptions between male versus female business students. Two statistically significant outcomes were observed between males and females involving the notions that plagiarism is perceived as a necessary evil and that plagiarism is illegal. Respectively, the analyses of the means showed that both male and female respondents tended toward disagreement concerning whether plagiarism is a necessary evil and neutrality regarding whether plagiarism is illegal

Ecology and management of the greater prairie-chicken

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Os saberes a ensinar e para ensinar matemática e suas relações com o ensino industrial brasileiro

Disponível em: http://revistas.upel.edu.ve/index.php/paradigma/article/view/6907/0Este trabalho é parte de uma pesquisa de doutorado que se preocupa em investigar o ensino de matemática no Liceu e na Escola Industrial de Florianópolis no período de 1937 a 1961. O objetivo é identificar os saberes a ensinar e para ensinar nos cursos do Liceu Industrial e da Escola Industrial de Florianópolis e quais as principais mudanças no ensino de Mat emática destas instituições de ensino industrial. Foram utilizados como referenciais teóricos Chervel (1990) sobre história das disciplinas escolares, Julia (2001) sobre cultura escolar , Hofstetter & Valente (2017) a respeito dos saberes a ensinar , Hofstet ter et al . (2017) na definição dos experts e Cellard (2008) para a análise documental . Percebeu - se que o ensino de Matemática era voltado para cálculos básicos, pois o enfoque era formar o aluno para a indústria, apesar de se intensificar o ensino de Álgeb ra e Trigonometria no início dos anos de 1940. Palavras - chave: Ensino Industrial. História da Educação Matemática. Experts . Saberes a ensinar. Saberes para ensinar

Measurements of branching fraction ratios and CP-asymmetries in suppressed B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^- decays

We report the first reconstruction in hadron collisions of the suppressed decays B^- -> D(-> K^+ pi^-)K^- and B^- -> D(-> K^+ pi^-)pi^-, sensitive to the CKM phase gamma, using data from 7 fb^-1 of integrated luminosity collected by the CDF II detector at the Tevatron collider. We reconstruct a signal for the B^- -> D(-> K^+ pi^-)K^- suppressed mode with a significance of 3.2 standard deviations, and measure the ratios of the suppressed to favored branching fractions R(K) = [22.0 \pm 8.6(stat)\pm 2.6(syst)]\times 10^-3, R^+(K) = [42.6\pm 13.7(stat)\pm 2.8(syst)]\times 10^-3, R^-(K)= [3.8\pm 10.3(stat)\pm 2.7(syst]\times 10^-3, as well as the direct CP-violating asymmetry A(K) = -0.82\pm 0.44(stat)\pm 0.09(syst) of this mode. Corresponding quantities for B^- -> D(-> K^+ pi^-)pi^- decay are also reported.Comment: 8 pages, 1 figure, accepted by Phys.Rev.D Rapid Communications for Publicatio