Increasing U.S. Hard Red Winter Wheat Competitiveness in Latin American Markets

The United States wheat sector leadership in world markets is facing serious challenges. Canada, Australia, Argentina, the European Union (EU), and the Former Soviet Union (FSU) are growing contenders for international wheat markets. Wheat buyers´ concerns about quality specifications and its consistency have intensified without precedents in the last years. The study focuses on identifying the attributes that wheat buyers most value at the moment of purchase. The study will be done in two stages. The first stage will focus in estimating preferences from actual wheat transactions from different grain-sheds in the HRW growing area. The second stage will focus on the demand from Latin American millers and will estimate their attribute preference and elicit willingness to pay. The second stage will start with Mexican millers, given their importance for the HRW exports. A hedonic price model will be used for the first stage. The second part of the study will attempt to elicit miller´s preferences by using a self explicated approach. Expected results are that the "easy-to-measure attributes": test weight, and protein levels; and all functionality characteristics such as bake absorption, farinograph peak time, farinograph stability, alveograph p/l ratio will be the most valued by the wheat customers. We hypothesize that millers will be willing to pay a premium if those attributes are present in desirable levels. The information should provide insight into the efforts being made by wheat marketing agencies and the U.S. Wheat Associates to promote quality-based marketing of wheat to domestic and foreign millers. Discussion may also include the impacts of quality-based marketing on U.S. share of the world wheat market.International Relations/Trade,

Recovering S1S^1-invariant metrics on S2S^2 from the equivariant spectrum

We prove an inverse spectral result for $S^1$-invariant metrics on $S^2$ based on the so-called asymptotic equivariant spectrum. This is roughly the spectrum together with large weights of the $S^1$ action on the eigenspaces. Our result generalizes an inverse spectral result of the first and last named authors, together with Victor Guillemin, concerning $S^1$-invariant metrics on $S^2$ which are invariant under the antipodal map. We use higher order terms in the asymptotic expansion of a natural spectral measure associated with the Laplacian and the $S^1$ action.Comment: 16 pages; minor revisions throughout following comments from referee

Hearing Delzant polytopes from the equivariant spectrum

Let M^{2n} be a symplectic toric manifold with a fixed T^n-action and with a toric K\"ahler metric g. Abreu asked whether the spectrum of the Laplace operator $\Delta_g$ on $\mathcal{C}^\infty(M)$ determines the moment polytope of M, and hence by Delzant's theorem determines M up to symplectomorphism. We report on some progress made on an equivariant version of this conjecture. If the moment polygon of M^4 is generic and does not have too many pairs of parallel sides, the so-called equivariant spectrum of M and the spectrum of its associated real manifold M_R determine its polygon, up to translation and a small number of choices. For M of arbitrary even dimension and with integer cohomology class, the equivariant spectrum of the Laplacian acting on sections of a naturally associated line bundle determines the moment polytope of M.Comment: 23 pages, 9 figures; v2 is published versio

Ect2/Pbl Acts via Rho and Polarity Proteins to Direct the Assembly of an Isotropic Actomyosin Cortex upon Mitotic Entry.

Entry into mitosis is accompanied by profound changes in cortical actomyosin organization. Here, we delineate a pathway downstream of the RhoGEF Pbl/Ect2 that directs this process in a model epithelium. Our data suggest that the release of Pbl/Ect2 from the nucleus at mitotic entry drives Rho-dependent activation of Myosin-II and, in parallel, induces a switch from Arp2/3 to Diaphanous-mediated cortical actin nucleation that depends on Cdc42, aPKC, and Par6. At the same time, the mitotic relocalization of these apical protein complexes to more lateral cell surfaces enables Cdc42/aPKC/Par6 to take on a mitosis-specific function-aiding the assembly of a relatively isotropic metaphase cortex. Together, these data reveal how the repolarization and remodeling of the actomyosin cortex are coordinated upon entry into mitosis to provide cells with the isotropic and rigid form they need to undergo faithful chromosome segregation and division in a crowded tissue environment

Massive vector fields on the Schwarzschild spacetime: quasinormal modes and bound states

We study the propagation of a massive vector or Proca field on the Schwarzschild spacetime. The field equations are reduced to a one-dimensional wave equation for the odd-parity part of the field and two coupled equations for the even-parity part of the field. We use numerical techniques based on solving (scalar or matrix-valued) three-term recurrence relations to compute the spectra of both quasi-normal modes and quasi-bound states, which have no massless analogue, complemented in the latter case by a forward-integration method. We study the radial equations analytically in both the near-horizon and far-field regions and use a matching procedure to compute the associated spectra in the small-mass limit. Finally, we comment on extending our results to the Kerr geometry and its phenomenological relevance for hidden photons arising e.g. in string theory compactifications.Comment: 15 pages, 8 figures; minor corrections, to be published in Phys. Rev.

The use of gas for heat and power; The testing of gas

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Working, but Poor: A Study of Georgia\u27s Economic Self-Sufficiency Policies

The work first philosophy of the Personal Responsibility and Work Opportunity Reconciliation Act sent millions of people into the labor force, many for the first time. The result was a dramatic increase in the number of workers whose earnings failed to pull them and their families out of poverty. Assistance in the form of childcare, transportation, medical coverage, and the Earned Income Tax Credit is beginning to receive attention as support mechanisms for people who do not earn adequate wages and receive little benefits from their employers. This study examines the effectiveness of Georgia\u27s approach to providing work support programs to its working poor citizens. No single entity is responsible for making work supports accessible. Thus, services often go underutilized because those who might qualify are not aware of their potential eligibility. Further, there is no state level strategy for ensuring that wage advancement is considered by agencies providing work support services. Using client administrative wage data from the Georgia Department of Labor and qualitative interviews from program staff, the state\u27s structure for assisting the working poor is examined

Plan de clase de la unidad de óptica reflexión y refracción

Debido a los altos índices de estudiantes que reprueban la materia Física D, se ha decidido realizar un plan piloto para implementar un plan de estudio que incluya el cambio de metodología para el dictado de esta materia. La metodología a seguir está basada en el método de Gagne, ya que este pone énfasis en el aprendizaje para lograr el desarrollo individual y promueve el desarrollo de habilidades más complejas en el individuo. El método de Gagne se fundamenta en la teoría del procesamiento de la información, que se refiere a la secuencia de procesos y operaciones mentales que se realizan para llegar a un conocimiento organizado de grandes cantidades de información. Las variables que interfieren en la aplicación de este método son: 1. Los procesos de aprendizaje 2. Las fases del aprendizaje 3. Los resultados del aprendizaje 4. Las condiciones del aprendizaj

Effect of Publicly Released Quality Information for US Hard Red Winter Wheat on Mexican Millers' Welfare

Entities have been providing quality related information to overseas wheat buyers as a response to the increased requests for this information. This study measures the value of information to Mexican millers. The value to Mexican millers is measured by the difference of the flour mill surplus and compensating variation.Agribusiness, Research and Development/Tech Change/Emerging Technologies,

CONSCIÊNCIA DE CLASSE E LUTA POR DIREITOS NAS REDES DE FAST FOOD

Esse artigo, fruto de um projeto de tese em desenvolvimento, tem como objetivo apresentar algumas questões que perpassam a discussão do trabalho em redes de fast food. A partir da compreensão de que os trabalhadores inseridos nesses espaços sofrem intensa exploração, são apontados elementos que contribuirão para o entendimento da forma como a ideologia opera em suas lutas por direitos. Apresentase, portanto, uma breve discussão sobre o trabalho nesses espaços, considerando o perfil etário predominante desses trabalhadores – jovens – e uma breve discussão acerca de ideologia e consciência de classe, que irá subsidiar as pesquisas a serem desenvolvidas