Selenium supplemented fertilization - effects on the selenium content of foods and the selenium intake in Finland

The effect of Se fertilization was distinct. Winter cereals were not affected as much as spring cereals due to the different cultivation and fertilization practice. The variation between the farms was large. In organic cultivation Se content of cereals was low

A Duality Exact Sequence for Legendrian Contact Homology

We establish a long exact sequence for Legendrian submanifolds L in P x R, where P is an exact symplectic manifold, which admit a Hamiltonian isotopy that displaces the projection of L off of itself. In this sequence, the singular homology H_* maps to linearized contact cohomology CH^* which maps to linearized contact homology CH_* which maps to singular homology. In particular, the sequence implies a duality between the kernel of the map (CH_*\to H_*) and the cokernel of the map (H_* \to CH^*). Furthermore, this duality is compatible with Poincare duality in L in the following sense: the Poincare dual of a singular class which is the image of a in CH_* maps to a class \alpha in CH^* such that \alpha(a)=1. The exact sequence generalizes the duality for Legendrian knots in Euclidean 3-space [24] and leads to a refinement of the Arnold Conjecture for double points of an exact Lagrangian admitting a Legendrian lift with linearizable contact homology, first proved in [6].Comment: 57 pages, 10 figures. Improved exposition and expanded analytic detai

Log-mean linear models for binary data

This paper introduces a novel class of models for binary data, which we call log-mean linear models. The characterizing feature of these models is that they are specified by linear constraints on the log-mean linear parameter, defined as a log-linear expansion of the mean parameter of the multivariate Bernoulli distribution. We show that marginal independence relationships between variables can be specified by setting certain log-mean linear interactions to zero and, more specifically, that graphical models of marginal independence are log-mean linear models. Our approach overcomes some drawbacks of the existing parameterizations of graphical models of marginal independence

The Minimal Length of a Lagrangian Cobordism between Legendrians

To investigate the rigidity and flexibility of Lagrangian cobordisms between Legendrian submanifolds, we investigate the minimal length of such a cobordism, which is a $1$-dimensional measurement of the non-cylindrical portion of the cobordism. Our primary tool is a set of real-valued capacities for a Legendrian submanifold, which are derived from a filtered version of Legendrian Contact Homology. Relationships between capacities of Legendrians at the ends of a Lagrangian cobordism yield lower bounds on the length of the cobordism. We apply the capacities to Lagrangian cobordisms realizing vertical dilations (which may be arbitrarily short) and contractions (whose lengths are bounded below). We also study the interaction between length and the linking of multiple cobordisms as well as the lengths of cobordisms derived from non-trivial loops of Legendrian isotopies.Comment: 33 pages, 9 figures. v2: Minor corrections in response to referee comments. More general statement in Proposition 3.3 and some reorganization at the end of Section

3-D Scene Reconstruction from Aerial Imagery

3-D scene reconstructions derived from Structure from Motion (SfM) and Multi-View Stereo (MVS) techniques were analyzed to determine the optimal reconnaissance flight characteristics suitable for target reconstruction. In support of this goal, a preliminary study of a simple 3-D geometric object facilitated the analysis of convergence angles and number of camera frames within a controlled environment. Reconstruction accuracy measurements revealed at least 3 camera frames and a 6 convergence angle were required to achieve results reminiscent of the original structure. The central investigative effort sought the applicability of certain airborne reconnaissance flight profiles to reconstructing ground targets. The data sets included images collected within a synthetic 3-D urban environment along circular, linear and s-curve aerial flight profiles equipped with agile and non-agile sensors. S-curve and dynamically controlled linear flight paths provided superior results, whereas with sufficient data conditioning and combination of orthogonal flight paths, all flight paths produced quality reconstructions under a wide variety of operational considerations

Rhetorical Strategies Implemented By The American Medical Association To Identify Roles Within The Interprofessional Healthcare Team

PURPOSE: Healthcare reform is introducing new models of care to serve complex patient needs, including expanded roles for nursing. This has resulted in interested parties debating formal definitions of provider roles in healthcare teams. The purpose of this study is to conduct a rhetorical criticism of content produced by the American Medical Association (AMA) concerning the role of providers within the healthcare team. THEORETICAL/CONCEPTUAL FRAMEWORK: This study’s framework uses rhetorical criticism, an analysis of an organization’s “strategic use of symbols to generate meaning” (Hoffman & Ford, 2010). This analysis evaluates the rhetoric on its potential function both to influence the definition of provider roles and to critique how the organization’s potential power may be implemented. By understanding what the organization displays in its public texts, one can potentially infer the intentions of the organization. METHOD: Press releases and newsletter articles publicly available from the AMA website from 2010 to 2014 were selected based on their relevance to the discussion of healthcare team leadership. The texts were analyzed using a systematic approach to identify and describe rhetorical strategies. This is a systematic, rigorous method for deconstructing texts in order to draw conclusions about the choices a rhetor made in achieving a goal. The analysis was then further enhanced with relevant contextual and historical research, analyzing the development of health care professions as disciplines in the US, and the organization’s history itself in its development as a trade association. RESULTS: Rhetorical strategies used by the AMA include: Appealing to the values of patient safety, teamwork, and competent leaders of teams; and making logical arguments based on contradictions in lay definitions of teamwork and independence. These are used to argue for maintaining legal and financial interests for physicians within healthcare systems. Limitations include analyzing select materials publicly available without an AMA membership. CONCLUSIONS: Defining the role of members within the interprofessional team is of interest to healthcare providers and their representative organizations as new models of care attempt to increase quality, access, and value within the system. As nursing organizations attempt to expand nursing scope of practice at the state level, oppositional views of these bills should be understood to provide counterarguments and effectively engage stakeholders

Are the HI deficient galaxies on the outskirts of Virgo recent arrivals?

The presence on the Virgo cluster outskirts of spiral galaxies with gas deficiencies as strong as those of the inner galaxies stripped by the intracluster medium has led us to explore the possibility that some of these peripheral objects are not newcomers. A dynamical model for the collapse and rebound of spherical shells under the point mass and radial flow approximations has been developed to account for the amplitude of the motions in the Virgo I cluster (VIC) region. According to our analysis, it is not unfeasible that galaxies far from the cluster, including those in a gas-deficient group well to its background, went through its core a few Gyr ago. The implications would be: (1) that the majority of the HI-deficient spirals in the VIC region might have been deprived of their neutral hydrogen by interactions with the hot intracluster medium; and (2) that objects spending a long time outside the cluster cores might keep the gas deficient status without altering their morphology.Comment: Accepted for publication in ApJ. 4 pages, 3 figures. Uses emulateapj