A new species of Cololejeunea (Lejeuneaceae: Cololejeuneoideae) from Panama

A new species of Cololejeunea section Protocolea, is described from Cerro Fábrega in Panama. The diagnostic characteristics of C. tixierii are lobes ovate-lanceolate, lobules never inflate but explanate or folded without forming a keel, reaching about half of the lobe length and perianth only faintly keeled at maturity

Las hepaticas comunicadas para Costa Rica

A survey of the literature and a few unpublished identifications of recent collections indicate that 426 taxa have been reported from Costa Rica, including Cocos Island. The distribution of each taxon is indicated by province and parameters are given for most localities within each province

E7(7) constraints on counterterms in N=8 supergravity

We prove by explicit computation that 6-point matrix elements of D^4R^4 and D^6R^4 in N=8 supergravity have non-vanishing single-soft scalar limits, and therefore these operators violate the continuous E7(7) symmetry. The soft limits precisely match automorphism constraints. Together with previous results for R^4, this provides a direct proof that no E7(7)-invariant candidate counterterm exists below 7-loop order. At 7-loops, we characterize the infinite tower of independent supersymmetric operators D^4R^6, R^8, phi^2 R^8,... with n>4 fields and prove that they all violate E7(7) symmetry. This means that the 4-graviton amplitude determines whether or not the theory is finite at 7-loop order. We show that the corresponding candidate counterterm D^8R^4 has a non-linear supersymmetrization such that its single- and double-soft scalar limits are compatible with E7(7) up to and including 6-points. At loop orders 7, 8, 9 we provide an exhaustive account of all independent candidate counterterms with up to 16, 14, 12 fields, respectively, together with their potential single-soft scalar limits.Comment: 9 pages, 1 table. Reference added, minor clarifications in abstract, typos correcte

Diplasiolejeunea involuta Winkler : una especie poco conocida

Diplasiolejeunea involuta Winkler, a species formerly known only from El Salvador, was collected from shrubs in a non pure Sphagnum - Blechnum bog in Costa Rica. The plant is easily recognized by its large leaves, very convex lobes and very large lobules with obviously involute apex; the species has 3-7 oil bodies of the Jungermannia type per cell. Most characteristics of D. involuta fit with those of the subgenus Austrolejeuneopsis, the size of the underleaves are like those of the subgenus Diplasiolejeunea and the stout lobule covers up to 85% of the lobe, as in the subgenus Physolejeunea

Intersecting Attractors

We apply the entropy formalism to the study of the near-horizon geometry of extremal black p-brane intersections in D>5 dimensional supergravities. The scalar flow towards the horizon is described in terms an effective potential given by the superposition of the kinetic energies of all the forms under which the brane is charged. At the horizon active scalars get fixed to the minima of the effective potential and the entropy function is given in terms of U-duality invariants built entirely out of the black p-brane charges. The resulting entropy function reproduces the central charges of the dual boundary CFT and gives rise to a Bekenstein-Hawking like area law. The results are illustrated in the case of black holes and black string intersections in D=6, 7, 8 supergravities where the effective potentials, attractor equations, moduli spaces and entropy/central charges are worked out in full detail.Comment: 1+41 pages, 2 Table

Historias de vida invisibles: Producci?n textual a partir de la observaci?n de espacios escolares.

111 p. Recurso Electr?nicoEl trabajo de investigaci?n HISTORIAS DE VIDA INVISIBLES, se enmarca dentro del macro-proyecto Redescubrir la Escuela del grupo de Investigaci?n Argonautas y hace parte de la versi?n ?Cartografiar el territorio para comprender la escuela? del semillero de investigaci?n Lenguaje y Territorio Escolar. El trabajo se basa en los siguientes conceptos: El territorio espacio cotidiano; La cartograf?a social visualiza el contexto; el lenguaje facilita la comunicaci?n; Las pr?cticas pedag?gicas facilitan el ejercicio del maestro; las historias de vida, relatos que reflejan la cotidianidad; las TIC permiten la manipulaci?n de la informaci?n; El posconflicto periodo para la b?squeda de la paz y la armon?a. El trabajo HISTORIAS DE VIDA INVISIBLES, parte de la siguiente pregunta: ?C?mo fundamentar la producci?n textual a partir de la construcci?n de historias de vida invisibles mediadas por las TIC, tomando como referencia la observaci?n de espacios escolares, con el fin de elaborar un documental hacia el posconflicto en los estudiantes de los grados 3? y 5? de la instituci?n educativa la paz N?1 sede San Luis, Flandes? La investigaci?n facilita vincular la cartograf?a con la formaci?n del Licenciado en Lengua Castellana para la comprensi?n de la realidad para fortalecer procesos pedag?gicos pertinentes. El territorio de observaci?n inicial fue el Colegio Militar Liceo Moderno del municipio de Girardot, Colombia, A?o 2015. El territorio de observaci?n final es la Instituci?n Educativa La Paz N?1 sede San Luis, Flandes ? Tolima, Colombia, A?o 2016.The research work ?INVISIBLE LIFE STORIES? It frames into macro project ?Rediscovering the school of Argonaut Investigation group? and this is part of ?Maping the territory to understand the school?s version?, of Research seed: Language and School environment. The Work is based on the following concepts: Territory?s a daily space; The social cartography visualizes the context; language eases the communication; The pedagogical practices eases the teacher?s exercise; Life Stories, that reflect everyday life; ICTs (Information and Communications Technology) allow the management of information; The post-conflict period for the search of peace and harmony. Deegree work ?Invisible life Stories? stars from the question; How do we base the textual production from the creation of invisible life stories mediated by ICTs, taking as a reference the observation of school spaces in order to make a documentary towards postconflict with students in the third and fifth grade of Educational institution "La Paz 1, headquarters San Luis - Flandes"? The research facilitates the linking of cartography with the training of the graduate in Spanish Language for undertanding of student reality and strengthening of relevant pedagogical processes. The first observation environment was The Military School Modern Lyceum in Girardot ? Colombia, Year: 2015. The final observation environment is the Educational institution "La Paz 1, headquarters San Luis ? Flandes ? Tolima, Colombia, Year: 2016. Keywords: Social cartography, school environment, Life stories, post-conflict

Analysis and assessment of the restrained energy market in the clean development context of the Araçatuba Administrative Region

Este artigo avalia o mercado reprimido de eletricidade, gás natural e álcool na Região Administrativa de Araçatuba (RAA), comparando o consumo com o consumo médio do estado de São Paulo e do estado da Flórida, EUA, onde se acredita que a demanda é plenamente satisfeita. O artigo apresenta uma projeção para o atendimento da demanda no contexto do desenvolvimento limpo em um cenário hipotético.This article assesses the restrained market of electricity, natural gas and alcohol in the Araçatuba Administrative Region (RAA), comparing the its consumption with the average consumption of the states of São Paulo and Florida (USA), where the demand is believed to be fully satisfied. Projections are made for answering the demand in a clean development context for a hypothetical scenario

Lealtad en el Aire: Factores Reales y Ficticios de la Formacion de Lealtad del Pasajero de Líneas Aereas

28 p.La lealtad del pasajero ha crecido en importancia en el servicio de líneas aéreas comerciales internacionales, debido especialmente a la crítica situación por la que atraviesa el sector turístico en los últimos años y la mayor competencia entre los proveedores del servicio en un mercado que se ha achicado. Por esta razón se ha aumentado la promoción del servicio y se han acentuado los programas de clubes destinados a crear lealtad. Sin embargo, la membresía múltiple a esos clubes y la tenue satisfacción con cada servicio han vuelto inefectivos a dichos programas, como queda demostrado en los frecuentes cambios de aerolínea o la postergación de vuelos por parte del cliente. Los estudios clásicos de la lealtad indican que éste es el resultado directo de la satisfacción del cliente, razón por la cual surgieron los “programas de lealtad.” Este vínculo directo ha sido cuestionado en estudios recientes, según los cuales la lealtad se encuentra determinada por factores relacionales y no transaccionales. Este estudio explora dichos factores respecto de la lealtad del pasajero de líneas aéreas. Los datos primarios provienen de una encuesta en el Aeropuerto Internacional de Santiago. La evidencia empírica demuestra que el proceso generador de lealtad en el servicio de líneas aéreas está determinado por el compromiso, la confianza, y la satisfacción, en ese orden de importancia

AdS Duals of Matrix Strings

We review recent work on the holographic duals of type II and heterotic matrix string theories described by warped AdS_3 supergravities. In particular, we compute the spectra of Kaluza-Klein primaries for type I, II supergravities on warped AdS_3xS^7 and match them with the primary operators in the dual two-dimensional gauge theories. The presence of non-trivial warp factors and dilaton profiles requires a modification of the familiar dictionary between masses and ``scaling'' dimensions of fields and operators. We present these modifications for the general case of domain wall/QFT correspondences between supergravities on warped AdS_{d+1}xS^q geometries and super Yang-Mills theories with 16 supercharges.Comment: 7 pages, Proceedings of the RTN workshop ``The quantum structure of spacetime and the geometric nature of fundamental interactions'', Leuven, September 200