A few philosophical ruminations on the human condition and choosing to live well

The notion that life is meaningful through choosing to live well has historically received substantive attention in various philosophical circles, notably the ancient Greek philosophers Socrates, Plato, and Aristotle, and more recently several of the existentialists. In some respects, the idea of choosing to live well is a “thematization” of two widely-recognized, independent components of a meaningful life: happiness and authenticity. I develop this notion of choosing to live well by exploring, developing, and relating these conceptions of happiness and authenticity. By appealing to a very basic account of human nature that has found favor among a great number of people, I show how happiness and authenticity complement each other as conditions for the possibility of living meaningfully.

Do you really know where you live?

Recurso para que los estudiantes comprendan la forma en que se desarrollan los asentamientos urbanos y rurales a través del tiempo, en el Reino Unido y en el extranjero. Se examinan los impactos positivos y negativos del cambio y busca formas de resolver los problemas que enfrentan los asentamientos de hoy, incluyendo la eliminación de residuos y los viajes.

Do you really know here you live?

Recurso para el profesor para la etapa clave 3 (Key Stage 3). Proporciona todo el apoyo necesario para asegurar a los estudiantes la comprensión de cómo se desarrollan los asentamientos urbanos y rurales a través del tiempo, en el Reino Unido y en el xtranjero. Incluye planes de lecciones, hojas de actividades, presentaciones en PowerPoint, fotografías, actividades interactivas y video clips.

La orientación e inserción sociolaboral de menores tutelados = Guidance and placement of children-youth who live in foster homes.

Resumen basado en el del autor

ICOM 2010: half a century of changes and impasse

Half a century, from 1947 to 2010, is enough for us to take stock of the impact of the “ideology of Development” on Heritage. An ideology induced by UNESCO and by ICOM. What has changed and what is still in an impasse? What effects has this ideology had on Heritage? It is after making this assessment that we can better understand the extent to which the theme of this 22nd ICOM General Conference – Shangai 2010 is ultimately an obvious product of that influence.

Entrevista a Roberto Fernández Retamar: la poesía, la Piadosa, me dio una razón para vivir (De la Escena Contemporánea. Entrevista)

El poeta y ensayista cubano confiesa que la poesía le dio una razón para vivir, y que sigue siendo su gran amor. Aunque difícil de definir, plantea que al ser humano le resulta imposible resistir sin ella: en toda crisis (la enfermedad, la muerte o la guerra), se recurre a la poesía. Las influencias literarias le llegaron de escritores alemanes, franceses y latinoamericanos (sobre todo, de Jorge Luis Borges, José Lezama Lima, Octavio Paz y Alfonso Reyes). El autor cubano destaca los méritos de varios poetas ecuatorianos y latinoamericanos. De Lezama Lima, quien “vivía para la poesía y el espíritu, con apenas unos pesitos”, resalta su sentido coral de la cultura (como construcción colectiva) y de la literatura. Respecto de la Revolución, aun reconociendo que hubo errores, está convencido de que es lo mejor que pudo pasarle a Cuba, no solo porque es la que buscó con insistencia, de Martí a Lezama, sino porque es la que triunfó y sigue adelante, pese al bloqueo económico de medio siglo por parte de la mayor potencia mundial, y de todas las dificultades.

Will the PRIPs' KID live up to its promise to protect investors? ECMI Commentary No. 33, 6 July 2012

Unveiled by the European Commission on July 3rd, the proposed Regulation on key information documents (KID) for packaged retail investment products (PRIPs) represents a step forward in enhancing the protection of retail investors and advancing the single market for financial services. While acknowledging in this Commentary that the KID is a commendable effort, ECMI/CEPS researcher Mirzha de Manuel Aramendía observes that pre-contractual disclosure is just one of the pieces in the jigsaw puzzle of investor protection and regrets that other pieces, such as MiFID and the IMD, are not so ambitiously constructed.

Simulated global-mean sea level changes over the last half-millennium

Simulations of the last 500 yr carried out using the Third Hadley Centre Coupled Ocean-Atmosphere GCM (HadCM3) with anthropogenic and natural (solar and volcanic) forcings have been analyzed. Global-mean surface temperature change during the twentieth century is well reproduced. Simulated contributions to global-mean sea level rise during recent decades due to thermal expansion (the largest term) and to mass loss from glaciers and ice caps agree within uncertainties with observational estimates of these terms, but their sum falls short of the observed rate of sea level rise. This discrepancy has been discussed by previous authors; a completely satisfactory explanation of twentieth-century sea level rise is lacking. The model suggests that the apparent onset of sea level rise and glacier retreat during the first part of the nineteenth century was due to natural forcing. The rate of sea level rise was larger during the twentieth century than during the previous centuries because of anthropogenic forcing, but decreasing natural forcing during the second half of the twentieth century tended to offset the anthropogenic acceleration in the rate. Volcanic eruptions cause rapid falls in sea level, followed by recovery over several decades. The model shows substantially less decadal variability in sea level and its thermal expansion component than twentieth-century observations indicate, either because it does not generate sufficient ocean internal variability, or because the observational analyses overestimate the variability.

The elliptic sine-Gordon equation in a half plane

We consider boundary value problems for the elliptic sine-Gordon equation posed in the half plane y > 0. This problem was considered in Gutshabash and Lipovskii (1994 J. Math. Sci. 68 197–201) using the classical inverse scattering transform approach. Given the limitations of this approach, the results obtained rely on a nonlinear constraint on the spectral data derived heuristically by analogy with the linearized case. We revisit the analysis of such problems using a recent generalization of the inverse scattering transform known as the Fokas method, and show that the nonlinear constraint of Gutshabash and Lipovskii (1994 J. Math. Sci. 68 197–201) is a consequence of the so-called global relation. We also show that this relation implies a stronger constraint on the spectral data, and in particular that no choice of boundary conditions can be associated with a decaying (possibly mod 2π) solution analogous to the pure soliton solutions of the usual, time-dependent sine-Gordon equation. We also briefly indicate how, in contrast to the evolutionary case, the elliptic sine-Gordon equation posed in the half plane does not admit linearisable boundary conditions.

Spectral functions of half-filled one-dimensional Hubbard rings with varying boundary conditions

We study the effect of varying the boundary condition on: the spectral function of a finite one-dimensional Hubbard chain, which we compute using direct (Lanczos) diagonalization of the Hamiltonian. By direct comparison with the two-body response functions and with the exact solution of the Bethe ansatz equations, we can identify both spinon and holon features in the spectra. At half-filling the spectra have the well-known structure of a low-energy holon band and its shadow-which spans the whole Brillouin zone-and a spinon band present for momenta less than the Fermi momentum. Features related to the twisted boundary condition are cusps in the spinon band. We show that the spectral building principle, adapted to account for both the finite system size and the twisted boundary condition, describes the spectra well in terms of single spinon and holon excitations. We argue that these finite-size effects are a signature of spin-charge separation and that their study should help establish the existence and nature of spin-charge separation in finite-size systems.

The Klein-Gordon equation on the half line: a Riemann-Hilbert approach

We solve an initial-boundary problem for the Klein-Gordon equation on the half line using the Riemann-Hilbert approach to solving linear boundary value problems advocated by Fokas. The approach we present can be also used to solve more complicated boundary value problems for this equation, such as problems posed on time-dependent domains. Furthermore, it can be extended to treat integrable nonlinearisations of the Klein-Gordon equation. In this respect, we briefly discuss how our results could motivate a novel treatment of the sine-Gordon equation.

Optimal protection of stabilised dry live bacteria from bile toxicity in oral dosage forms by bile acid adsorbent resins

We previously found that dried live bacteria of a vaccine strain can be temporarily sensitive to bile acids and suggested that Bile Adsorbing Resins (BAR) can be used in oral vaccine tablets to protect dried bacteria from intestinal bile. Here, we report a quantitative analysis of the ability of BAR to exclude the dye bromophenol blue from penetrating into matrix tablets and also sections of hard capsule shells. Based on this quantitative analysis, we made a fully optimised formulation, comprising 25% w/w of cholestyramine in Vcaps™ HPMC capsules. This gave effectively 100% protection of viability from 4% bile, with 4200-fold more live bacteria recovered from this formulation compared to unprotected dry bacteria. From the image analysis, we found that the filler material or compaction force used had no measurable effect on dye exclusion but did affect the rate of tablet hydration. Increasing the mass fraction of BAR gave more exclusion of dye up to 25% w/w, after which a plateau was reached and no further dye exclusion was seen. More effective dye exclusion was seen with smaller particle sizes (i.e. cholestyramine) and when the BAR was thoroughly dried and disaggregated. Similar results were found when imaging dye penetration into capsule sections or tablets. The predictions of the dye penetration study were tested using capsules filled with dried attenuated Salmonella vaccine plus different BAR types, and the expected protection from bile was found, validating the imaging study. Surprisingly, depending on the capsule shell material, some protection was given by the capsule alone without adding BAR, with Vcaps™ HPMC capsules providing up to 174-fold protection against 1% bile; faster releasing Vcaps Plus™ HPMC capsules and Coni Snap™ gelatin capsules gave less protection.