This book offers a sustained re-evaluation of the most central and perplexing themes of Leibniz's metaphysics. In contrast to traditional assessments that view the metaphysics in terms of its place among post-Cartesian theories of the world, Jan Cover and John O'Leary-Hawthorne examine the question of how the scholastic themes which were Leibniz's inheritance figure - and are refigured - in his mature account of substance and individuation. From this emerges a fresh and sometimes surprising assessment of Leibniz's views on modality, (...) the Identity of Indiscernibles, form as an internal law, and the complete-concept doctrine. As a rigorous philosophical treatment of a still-influential mediary between scholastic and modern metaphysics, their study will be of interest to historians of philosophy and contemporary metaphysicians alike. (shrink)

Basado enteramente en pruebas internas, este estudio se propone mostrar que el manuscrito único del Dīwān de Ibn Quzmān, publicado en edición facsímil por David de Gunzburg en 1896, es una copia dictada. Se indica también que el copista, a quien con frecuencia se ha culpado de introducir en el texto popular andaluz correcciones o clasicismos, no estaba bien equipado para desempeñar tal papel. Si bien era un calígrafo de primera categoría, se aducen pruebas de que su conocimiento del árabe (...) no estaba a la altura de la calidad de su caligrafía. El estudio muestra que él fue el responsable de una amplia gama de problemas textuales que ha dejado perplejos a sucesivos editores del Dīwān. En marcado contraste, se muestra que Ibn Quzmān poseía un dominio magistral de la lengua árabe y de las tradiciones-árabes clásicas. Al parecer también había adquirido un alto grado de 'aculturación' en la lengua romance. Además de ofrecer las pruebas en que se basan estos asertos, el estudio constituye un ejemplo ilustrativo de cómo estas pruebas pueden ayudar a una mejor lectura e interpretación del Dīwān de Ibn Quzmān. (shrink)

We believe that the task goal in voluntary movements provides meaning to existing information sources in the environment and determines, in a dynamic way, the use and relative importance of these different sources. This task-centered meaning bridges the apparent controversy between what information is available in principle (i.e., specification), and what information is perceived.

Filosofische ponering van de subjectiviteit van elke interpretatie.

Tsc question of the date of Ctesibius has been much obscured of late years by those German scholars1 who assert that Ctesibius the pneumatic and hydraulic engineer mentioned by Vitruvius IX. 8. 2 is distinct and separate from Κτησίβιος Κτησίβιος μηΧανικός who is mentioned by Athenaeus Mechanicus , Philo of Byzantium , and Hedylus ap. Athenaeum Naucratitam Deipn. XI., p. 497, d-e = Anthologia Graeca ed. Cougny, Paris , 1890, Vol. III., p. 298, n. 67.

Tick and tick-borne diseases, especially East Coast fever, caused byTheileria parva, are amongst the most important factors limiting cattle production in Eastern, Central, and Southern Africa. In the past, they have been controlled mainly by the use of acaricides to kill ticks. Immunization has been shown to be an effective alternative method of control of tick-borne diseases in limited field trials. A development program has been initiated to produce vaccines and implement immunization on a wide scale in the region in (...) a sustainable manner as part of an integrated tick and tickborne disease control program. The consequent reduction in cattle mortality is expected to have far-reaching benefits for the region. (shrink)

Physiological concentrations of retinoic acid can induce acute alterations in the expression of the enzyme tissue transglutaminase in cultured macrophages. The induction of this enzyme offers a probe to study the mechanism of retinoid action in both normal and leukemic cells.