The framework of Petri nets is extended with imprecise temporal properties. Possibility theory is applied to model imprecise time by time-stamping tokens and assigning durations to firing of the transitions.

Coronavirus infection (COVID-19) has quickly emerged as a global pandemic leading to critical health complications. The possibility and risk of vertical transmission this virus is still unclear, particularly it relates pregnant women their fetuses. Regarding scientific data, there insufficient research focused on COVID-19 complicated with hydrops fetalis intrauterine fetal demise. In study, we ...

ttv was first isolated from the serum of a japanese patient with post transfusion hepatitis of unknown etiology in 1977. ttv has been visualized by electron microscopy and was found to be an unenveloped, small, spherical particle with a diameter of 30-32 nm, and is a member of family related to circovridae family. the exact role of ttv in the pathogenesis of liver disease is yet to be establish...

background: hydroxyurea (hu) is a well known chemotherapeutic agent that has been used largely for various myeloproliferative diseases over the past 20 years. in β-thalassemia, the effect of hu is much less clear and remains controversial. this study was undertaken to describe the hematologic and clinical responses of thalassemia major and intermediate patients to hu treatment during 2 years. m...

background: the development of anti-red blood cell alloantibodies remains a major problem in transfusion of blood in thalassemia major patients. also, autoantibodies can result in clinical hemolysis and difficulty in cross-matching blood. we studied the frequency of red blood cell alloimmunization and autoimmunization among thalassemia patients who received regular transfusions in ilam province...

David Chalmers’ conceivability argument against physicalism relies on the entailment from a priori conceivability to metaphysical possibility. The a posteriori physicalist rejects this premise, but is consequently committed to psychophysical strong necessities. These don’t fit into the Kripkean model of the necessary a posteriori, and they are therefore, according to Chalmers, problematic. But ...

In this paper, we consider several types of in­ formation and methods of combination asso­ ciated with incomplete probabilistic systems. \Ve discriminate between 'a priori' and evi­ dential information. The former one is a de­ scription of the whole population, the latest is a restriction based on observations for a particular case. Then, we proposse different combination methods for each one o...

I demonstrate that a consistent interpretation of Reichenbach’s (1947) primitives and their configurations enables the construction of an intuitive and elegant semantic space for all logically possible tense meanings, independent of their mode of expression. I argue that the property which defines the perfect in absolute tense systems is the dissociation of the temporal location of the situatio...

In Conceptual Spaces (Gärdenfors 2000), dimensions and their relations provide a topological representation of a concept’s constituents and their mode of combination. Consequently, as concepts are ndimensional geometrical structures, conceptual change denotes the dynamic development of these structures. Following this basic assumption, we apply conceptual spaces to the dynamics of empirical the...

and the management of linguistically expressed uncertainty. Int.