2019 Mental Health Initiative Assembly: Choose Your Response

Mental health “State of well-being in which every individual realizes their own potential, can cope with the normal stresses of life, can work productively and fruitfully, and is able to make a contribution to their community.” (WHO, 2014, revised to remove gendered language

Building Our Future Together

How Linfield turned the voice of the community into a plan for the futur

Discriminants, symmetrized graph monomials, and sums of squares

Motivated by the necessities of the invariant theory of binary forms J. J. Sylvester constructed in 1878 for each graph with possible multiple edges but without loops its symmetrized graph monomial which is a polynomial in the vertex labels of the original graph. In the 20-th century this construction was studied by several authors. We pose the question for which graphs this polynomial is a non-negative resp. a sum of squares. This problem is motivated by a recent conjecture of F. Sottile and E. Mukhin on discriminant of the derivative of a univariate polynomial, and an interesting example of P. and A. Lax of a graph with 4 edges whose symmetrized graph monomial is non-negative but not a sum of squares. We present detailed information about symmetrized graph monomials for graphs with four and six edges, obtained by computer calculations

Report from the Secretary of War, transmitting, in compliance with the act of May 1, 1820, a statement of the appropriations and expenditures for that department during the year 1838.

346 H.doc.10425-3Report on War Dept. Appropriations. [339] For 1838; Indian expenses.1839-3

Constitution, By-Laws and Order of Business of Liberty Rebekah Lodge No. 94

The constitution, by-laws and order of business for the Liberty Rebekah Lodge of Auburn, Maine, approved January 18, 1938

In the Senate of the United States. Letter from the Secretary of the Interior, relative to the sale of certain lands belonging to the Indians in Kansas

52-1Indian AffairsSale of Indian Lands in Kansas. [2901] Belonging to the Swan Creek and Black River Chippewas, and the Munsee of Christian Indians.1892-16

Emergence of superfluid transport in a dynamical system of ultracold atoms

The dynamics of a Bose-Einstein condensate is studied theoretically in a combined periodic plus harmonic external potential. Different dynamical regimes of stable and unstable collective dipole and Bloch oscillations are analysed in terms of a quantum mechanical pendulum model. Nonlinear interactions are shown to counteract quantum-mechanical dephasing and lead to phase-coherent, superfluid transport

Accumulation of chromium metastable atoms into an Optical Trap

We report the fast accumulation of a large number of metastable 52Cr atoms in a mixed trap, formed by the superposition of a strongly confining optical trap and a quadrupolar magnetic trap. The steady state is reached after about 400 ms, providing a cloud of more than one million metastable atoms at a temperature of about 100 microK, with a peak density of 10^{18} atoms.m^{-3}. We have optimized the loading procedure, and measured the light shift of the 5D4 state by analyzing how the trapped atoms respond to a parametric excitation. We compare this result to a theoretical evaluation based on the available spectroscopic data for chromium atoms.Comment: 7 pages, 5 Figure