A preference-based semantics for CTD reasoning

In [8] the authors developed a logical system based on the definition of a new non-classical connective ⊗ capturing the notion of reparative obligation. The system proved to be appropriate for handling well-known contrary-to-duty paradoxes but no model-theoretic semantics was presented. In this paper we fill the gap and define a suitable possible-world semantics for the system for which we can prove soundness and completeness. The semantics is a preference-based non-normal one extending and generalizing semantics for classical modal logics.

Sapientia, 1979, Vol. XXXIV, nº 133-134 (número completo)

Contenido: El orden humano / Octavio N. Derisi – Los primeros principios / Gustavo E. Ponferrada – La filosofía analítica actual y su terapia mediante la filosofía cristiana y tomista / Teófilo Urdánoz – Verdad y relativismo según el pensamiento de Tomás de Aquino / William R. Darós – El mundo espiritual de la persona / Octavio N. Derisi – Ordo et mysterium / Emilio Komar – La filosofía cristiana de la libertad / Abelardo Lobato – El significado de la encíclica “Aeterni Patris” de León XIII, a los cien años de su publicación / Octavio N. Derisi – Notas y comentarios -- Bibliografía

Experiments on the production of a highly dispersible calcium carbonate. ('Experimental section' only) [Translation from: Szklo i Ceramiki 30, 133-136, 1979]

This short translation summarises experiments on the production of a highly dispersible precipitate of calcium carbonate. The translation covers the 'Experimental section' (of the original larger paper) only.

133-W pulsed fiber amplifier with large-mode-area fiber

A master-oscillator fiber power amplifier (MOPA) system with a 4-m-long Yb3+-doped homemade large mode area (LMA) double-clad fiber is reported. The system emits up to 133.8 W of amplified radiation at a wavelength of 1064 nm and a repetition rate of 100 kHz, limited only by the available pump power. Peak power of 300 kW at 20 kHz with a pulse duration of 15 ns is obtained. (c) 2006 Society of Photo-Optical Instrumentation Engineers.