In this paper I examine a cluster of concepts relevant to the methodology of truth theories: ‘informative definition’, ‘recursive method’, ‘semantic structure’, ‘logical form’, ‘compositionality’, etc. The interrelations between these concepts, I will try to show, are more intricate and multi-dimensional than commonly assumed. 1. TRUTH AND RECURSION In his 1933 paper, “The Concept of Truth in F...

The blue supergiant Sher 25 in the massive Galactic cluster NGC3603 is surrounded by a striking emission line nebula. The nebula contains an equatorial ring and probable bi-polar outflows, and is similar in morphology, mass and kinematics to the shell now visible around SN1987A. It has been suggested that both nebulae were ejected while Sher 25 and the progenitor of SN1987A were in previous red...

Th is paper proposes a new a lgor i thm which when provided the relative costs of computa­ t ion vs. probing minimizes the to ta l cost of diagnosis. Dur ing the diagnosis process the de­ cision of whether to probe or to compute is dependent on the expected costs and benefits of each al ternat ive. I t is unl ikely tha t we w i l l be able to find general analyt ic and simpleto-compute models f...

During cell division, the genome is fully duplicated and then segregated to two daughter cells. In some tissues, however, cells repeatedly duplicate their genome and grow without dividing. This process results in large cells with many copies of their genome, a state known as polyploidy. In polyploid cells of the fruit fly Drosophila, DNA replication is not complete, which results in a relativel...

Plant parasitic nematodes were systematically surveyed in cereal production areas of Isparta and Burdur Provinces Turkey 2016-2017. Nine plant nematode genera identified [Ditylenchus (23%), Geocenamus (20%), Helicotylenchus (33%), Heterodera (<1%), Meloidogyne (3%), Pratylenchus (76%), Pratylenchoides (52%), Paratylenchus (41%) Tylenchus (18%)]. spp. was found 82% 68% samples, 55% 63% samples P...