El Test de Ramsey y las lógicas condicionales

Frank Ramsey (1931) estableció ciertas condiciones que deberían cumplirse a fin de evaluar las proposiciones condicionales, conocidas hoy como Test de Ramsey (TR) En este trabajo se muestra que las teorías sobre condicionales contrafácticos de Chisholmj, Stalnaker y D. Lewis, satisfacen el TR y la incompatibilidad de TR con la Teoría de la revisión de creencias (AGM). En la última sección se analiza el comportamiento del TR en la propuesta de G. Grocco y L. Fariñas del Cerro, basada en una generalización del cálculo de Secuentes pero introduciendo la novedad de secuencias auxiliares cuya noción de consecuencia es no-monótona.

El Test de Ramsey y las lógicas condicionales

Frank Ramsey (1931) estableció ciertas condiciones que deberían cumplirse a fin de evaluar las proposiciones condicionales, conocidas hoy como Test de Ramsey (TR) En este trabajo se muestra que las teorías sobre condicionales contrafácticos de Chisholmj, Stalnaker y D. Lewis, satisfacen el TR y la incompatibilidad de TR con la Teoría de la revisión de creencias (AGM). En la última sección se analiza el comportamiento del TR en la propuesta de G. Grocco y L. Fariñas del Cerro, basada en una generalización del cálculo de Secuentes pero introduciendo la novedad de secuencias auxiliares cuya noción de consecuencia es no-monótona.

A homeostatic function of CXCR2 signalling in articular cartilage

Funding This work was funded by Arthritis Research UK (grants 17859, 17971, 19654), INNOCHEM EU FP6 (grant LSHB-CT-2005-51867), MRC (MR/K013076/1) and the William Harvey Research Foundation

The cysteine-rich frizzled domain of Frzb-1 is required and sufficient for modulation of Wnt signaling

Convincing evidence has accumulated to identify the Frizzled proteins as receptors for the Wnt growth factors. In parallel, a number of secreted frizzled-like proteins with a conserved N-terminal frizzled motif have been identified. One of these proteins, Frzb-1, binds Wnt-1 and Xwnt-8 proteins and antagonizes Xwnt-8 signaling in Xenopus embryos. Here we report that Frzb-1 blocks Wnt-1 induced cytosolic accumulation of β-catenin, a key component of the Wnt signaling pathway, in human embryonic kidney cells. Structure/function analysis reveals that complete removal of the frizzled domain of Frzb-1 abolishes the Wnt-1/Frzb-1 protein interaction and the inhibition of Wnt-1 mediated axis duplication in Xenopus embryos. In contrast, removal of the C-terminal portion of the molecule preserves both Frzb-Wnt binding and functional inhibition of Wnt signaling. Partial deletions of the Frzb-1 cysteine-rich domain maintain Wnt-1 interaction, but functional inhibition is lost. Taken together, these findings support the conclusion that the frizzled domain is necessary and sufficient for both activities. Interestingly, Frzb-1 does not block Wnt-5A signaling in a Xenopus functional assay, even though Wnt-5A coimmunoprecipitates with Frzb-1, suggesting that coimmunoprecipitation does not necessarily imply inhibition of Wnt function.

Auditory message studies for route diversion. Final report.

Mode of access: Internet.

Highway advisory radio in construction areas. Final report.

Mode of access: Internet.

Transformation of Nine-Accelerometer-Package (NAP) data for replicating headpart kinematics and dynamic loading. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Further studies on auditory messages. Final report.

Mode of access: Internet.

Modern trio album. [music] : fifteen special concert arrangements and original compositions for violin, cello and piano /

Elegie and consolation, op. 200, no. 2 / Atherton, Frank P. -- Hungarian dance no. 5 (in G minor) / Brahms, Johannes -- Humoreske : op. 101, no. 7 / Dvor̂ák, Anton ; arr. by Gustav Saenger -- La Cinquantaine / Gabriel-Marie ; special concert arr. by C. Arnold -- Gavotte Louis XIII : Amaryllis / Ghys, H. ; arr. by N. Hansen -- Serenade, from Op. 3 / Herbert, Victor -- Dreams of love = Liebesträume : notturno III / Liszt, Franz ; arr. by R. Klugescheid -- O Belle Nuite, Barcarolle from "Contes d'Hoffmann" / Offenbach, J. ; arr. by Max Woltag -- Celebrated Andante / Reissiger, C. G. -- My heart at thy sweet voice : Cantabile from "Samson and Dalila" / Saint-Saëns, C. ; arr. by R. Klugescheid -- Melodie Mignonne / Sinding, Christian ; arr. by N. Hansen -- Vienna life = Wiener Blut / Strauss, Johann ; special concert arr. by C. Arnold -- Autumn song = Chant d'automne ; Chant sans paroles : op. 40, no. 6 / Tschaikowsky, P. ; arr. by N. Hansen -- Song to the evening star : from "Tannhäuser" / Wagner, Richard ; concert paraphrase by C. Arnold.

A review of the Pocahontas strike and its causes from the operators' standpoint [microform] /

Cover-title.

Quad-City Solid Wastes Project; an interim report, June 1, 1966 to May 31, 1967.

The cities involved are: Paterson, Clifton, Passaic and Wayne, N. J.

Legal remedies for housing code violations,

Bibliographical references included in "Footnotes" (p. 155-264)

Expansion of the fertilizer industry in the Philippines /

Includes bibliographical references.

Final report of the Commission on Industrial Relations, including the report of Basil M. Manly, director of research and investigation, and the individual reports and statements of the several commissioners.

Senate doc. 415, 64th Cong., 1st sess., has title: Industrial relations. Final report and testimony.

"Chip's" old wood cuts.

Mode of access: Internet.