WERE U.S. CROP YIELDS RANDOM IN RECENT YEARS?

Crop Production/Industries,

PRICE, YIELD, AND GROSS REVENUE VARIABILITY FOR SELECTED GEORGIA CROPS

Demand and Price Analysis,

Search for C=+C=+ charmonium and bottomonium states in e+e−→γ+Xe^+e^-\to \gamma+ X at B factories

We study the production of $C=+$ charmonium states $X$ in $e^+e^-\to \gamma + X$ at B factories with $X=\eta_c(nS)$ (n=1,2,3), $\chi_{cJ}(mP)$ (m=1,2), and $^1D_2(1D)$. In the S and P wave case, contributions of tree-QED with one-loop QCD corrections are calculated within the framework of nonrelativistic QCD(NRQCD) and in the D-wave case only the tree-QED contribution are considered. We find that in most cases the QCD corrections are negative and moderate, in contrast to the case of double charmonium production $e^+e^-\to J/\psi + X$, where QCD corrections are positive and large in most cases. We also find that the production cross sections of some of these states in $e^+e^-\to \gamma + X$ are larger than that in $e^+e^-\to J/\psi + X$ by an order of magnitude even after the negative QCD corrections are included. So we argue that search for the X(3872), X(3940), Y(3940), and X(4160) in $e^+e^-\to \gamma + X$ at B factories may be helpful to clarify the nature of these states. For completeness, the production of bottomonium states in $e^+e^-$ annihilation is also discussed.Comment: 13pages, 4 figure

Analisis Ketidakharmonisan antara PPSAK No. 13, 16, dan 19 dengan UU No. 36 Tahun 2008 dan Peraturan Menteri Keuangan No. 79/PMK 03/2008 Mengenai Revaluasi Aset Tetap, Properti Investasi, dan Aset Tak Berwujud

The purpose of this paper is to analyze disharmony between SFAS No. 13, 16, and 19 which are adopted from Internatonal Financial Reporting Standard (IFRS 2009) and Law no. 36 of 2008 and Regulation of the Minister of Finance No. 79/PMK 03/2008 about the Revaluation of Fixed Assets, Investment Property, and Intangible Assets. The Authors use descriptive analysis method in this paper. The analysis showed that (1) There are no major obstacles in implementing the revaluation model under SFAS No. 13 and 19 with the tax regulation, (2) The application of SFAS No. 16 is not in line with the Law No. 36 of 2008 and Regulation of the Minister of Finance No. 79/PMK 03/2008, (3) There are 7 dysharmony between SFAS No. 16 with the Regulation of the Minister of Finance No. 79/PMK 03/2008 with the level of problem: 3 are major, 3 are medium, and 1 is minor. Disharmony can cause companies reluctant to report their assets at fair value as required under the revaluation model. Though the information of assets which is measured by fair value is needed by investors and creditors in their economic decision-making. Therefore, the author suggesting the application of revaluation model is separated between fiscal and commercial financial reporting. Considering the purpose of SFAS and Law No. 36 of 2008 and Regulation of the Minister of Finance No.79/PMK 03/2008 basically different, the author recommendation can be considered by regulators

Theoretical studies of 63Cu Knight shifts of the normal state of YBa2Cu3O7

The 63Cu Knight shifts and g factors for the normal state of YBa2Cu3O7 in tetragonal phase are theoretically studied in a uniform way from the high (fourth-) order perturbation formulas of these parameters for a 3d9 ion under tetragonally elongated octahedra. The calculations are quantitatively correlated with the local structure of the Cu2+(2) site in YBa2Cu3O7. The theoretical results show good agreement with the observed values, and the improvements are achieved by adopting fewer adjustable parameters as compared to the previous works. It is found that the significant anisotropy of the Knight shifts is mainly attributed to the anisotropy of the g factors due to the orbital interactions.Comment: 5 page

Investigations of the g factors and local structure for orthorhombic Cu^{2+}(1) site in fresh PrBa_{2}Cu_{3}O_{6+x} powders

The electron paramagnetic resonance (EPR) g factors g_x, g_y and g_z of the orthorhombic Cu^{2+}(1) site in fresh PrBa_{2}Cu_{3}O_{6+x} powders are theoretically investigated using the perturbation formulas of the g factors for a 3d^9 ion under orthorhombically elongated octahedra. The local orthorhombic distortion around the Cu^{2+}(1) site due to the Jahn-Teller effect is described by the orthorhombic field parameters from the superposition model. The [CuO6]^{10-} complex is found to experience an axial elongation of about 0.04 {\AA} along c axis and the relative bond length variation of about 0.09 {\AA} along a and b axes of the Jahn-Teller nature. The theoretical results of the g factors based on the above local structure are in reasonable agreement with the experimental data.Comment: 6 pages, 1 figur