Exactly solvable one-qubit driving fields generated via non-linear equations

Using the Hubbard representation for $SU(2)$ we write the time-evolution operator of a two-level system in the disentangled form. This allows us to map the corresponding dynamical law into a set of non-linear coupled equations. In order to find exact solutions, we use an inverse approach and find families of time-dependent Hamiltonians whose off-diagonal elements are connected with the Ermakov equation. The physical meaning of the so-obtained Hamiltonians is discussed in the context of the nuclear magnetic resonance phenomeno

Geodesic Structure of Lifshitz Black Holes in 2+1 Dimensions

We present a study of the geodesic equations of a black hole space-time which is a solution of the three-dimensional NMG theory and is asymptotically Lifshitz with $z=3$ and $d=1$ as found in [Ayon-Beato E., Garbarz A., Giribet G. and Hassaine M., Phys. Rev. {\bf D} 80, 104029 (2009)]. By means of the corresponding effective potentials for massive particles and photons we find the allowed motions by the energy levels. Exact solutions for radial and non-radial geodesics are given in terms of the Weierstrass elliptic $\wp$, $\sigma$, and $\zeta$ functions.Comment: 10 pages, 6 figures, accepted for publication in Eur. Phys. J.

Communications in Choreographies, Revisited

Choreographic Programming is a paradigm for developing correct-by-construction concurrent programs, by writing high-level descriptions of the desired communications and then synthesising process implementations automatically. So far, choreographic programming has been explored in the monadic setting: interaction terms express point-to-point communications of a single value. However, real-world systems often rely on interactions of polyadic nature, where multiple values are communicated among two or more parties, like multicast, scatter-gather, and atomic exchanges. We introduce a new model for choreographic programming equipped with a primitive for grouped interactions that subsumes all the above scenarios. Intuitively, grouped interactions can be thought of as being carried out as one single interaction. In practice, they are implemented by processes that carry them out in a concurrent fashion. After formalising the intuitive semantics of grouped interactions, we prove that choreographic programs and their implementations are correct and deadlock-free by construction

Social exclusion and economic growth at the European Union: can social marketing and behavioral economics help us to overcome the problem?

The problem of poverty and social exclusion is growing nowadays in the European Union context, according to Eurostat (2015 and 2016). And, in spite of the fact that Europe 2020 Strategy is apparently focused on that situation, the perspectives are not promising. What could be happening? In this paper we analyze this issue from a Macromarketing approach, including elements from Behavioral Economics (stigmatization process and stress coping theories, going further than the “homo economicus” traditional model) to reach a better understanding, and recommending a combined public-private response to overcome the problem, using the elements that Marketing provide us (such as Social Marketing, Macro-social Marketing, Corporate Social Marketing and also traditional Commercial Marketing techniques, under a “fortune at the bottom of the pyramid” approach). Doing so, we do not only want to eradicate this sort of curse, but also to boost economic growth in an effective inclusive manner.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

A systematic framework to improve knowledge management through information technology

Title from PDF of title page (University of Missouri--Columbia, viewed on September 21, 2010).The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Thesis advisor: Dr. C. Alec Chang.M.S. University of Missouri--Columbia 2009.Organizations rely on their IT infrastructure to perform on a daily basis, and a constant debate on whether the IT tools used are the appropriate ones to achieve their strategic planning objectives is always present. Many IT tools are modified or purchased to encourage knowledge flow within the organization, but there are no established frameworks to help organizations link their business priorities and IT infrastructure. This research presents a systematic framework for knowledge management through IT structured according to the Baldrige Performance Criteria; which gives the framework the capacity to be implemented in any organization. A survey instrument measuring importance and user satisfaction of IT is used to analyze the impact of IT tools in an organization through the Opportunity Algorithm (OA) and Analytical Hierarchy Process (AHP). Quality Function Deployment (QFD) is finally used along with a Knowledge Management System (KMS) flowchart based on current literature to provide a guideline for organizations to define their current knowledge domains and identify issues preventing knowledge flow. The implementation of this framework at the Missouri Small Business Development Center helped management deciding what IT tools are more important based on their organizational needs. It also helped in identifying factors of each IT tool that provide the biggest opportunity for improvement, and increased collaboration for knowledge management across the company.Includes bibliographical references

Species Delimitation among Southeastern US Oxyloma (Gastropoda: Succineidae)

The Succineid genus Oxyloma found throughout Canada and United States contains approximately 15 described species whose criterion for differentiation is considered unreliable. As a first step towards understanding the evolutionary history and revising the taxonomy of North American Oxyloma, we have sampled four species found in eastern North America (O. salleana, O. subeffusa, O. effusa, and O. retusa) from their type localities. We used mitochondrial COI, and nuclear LSU sequences with samples found across their range and members of the family to produce a phylogenetic hypothesis of evolutionary relationships and test species boundaries. Molecular phylogeny and species delimitation analyses using mitochondrial and nuclear data finds three monophyletic groups among the four nominal Oxyloma species, confirming doubts concerning the validity of these species