A Gricean Theory of Expressive Conduct

In Spence v. Washington, the Supreme Court devised a two-part test for determining whether a nonverbal action is expressive conduct protected by the First Amendment. According to the Spence test, a nonverbal action is expressive if and only if: (1) it is intended to communicate a particularized message; and (2) in the circumstances in which the action is performed, the likelihood is great that the message will be understood by observers. In subsequent cases, however, the Court has made clear that the category of “expressive conduct” embraces a much wider variety of nonverbal behaviors than a literal reading of the Spence test would suggest. It includes, for example, such behaviors as composing instrumental music, creating nonrepresentational visual artworks, penning nonsense verse, and dancing in the nude for the entertainment of others. Drawing on the work of Paul Grice, one of the twentieth century’s most influential philosophers of language, this Comment develops a two-part expressive conduct test that captures the expressive character of this wider variety of behaviors. It shows that the Gricean test displays striking consistency with the Supreme Court’s particularized judgments about which sorts of nonverbal conduct are expressive and which sorts are not

Empirical evidence for Niss' implemented anticipation in mathematising realistic situations

Mathematisation of realistic situations is an on-going focus of research. Classroom data from a Year 9 class participating in a program of structured modelling of real situations was analysed for evidence of Niss’s theoretical construct, implemented anticipation, during mathematisation. Evidence was found for two of three proposed aspects. In addition, unsuccessful attempts at mathematisations were related in this study to inability to use relevant mathematical knowledge in the modelling context rather than lack of mathematical knowledge, an application oriented view of mathematics or persistence

THE U.S. DAIRY INDUSTRY

Agribusiness,

Where Fail-Safe Default Logics Fail

Reiter's original definition of default logic allows for the application of a default that contradicts a previously applied one. We call failure this condition. The possibility of generating failures has been in the past considered as a semantical problem, and variants have been proposed to solve it. We show that it is instead a computational feature that is needed to encode some domains into default logic

Ultraviolet radiation sensitivity and reduction of telomeric silencing in Saccharomyces cerevisiae cells lacking chromatin assembly factor-I

In vivo, nucleosomes are formed rapidly on newly synthesized DNA after polymerase passage. Previously, a protein complex from human cells, termed chromatin assembly factor-I (CAF-I), was isolated that assembles nucleosomes preferentially onto SV40 DNA templates that undergo replication in vitro. Using a similar assay, we now report the purification of CAF-I from the budding yeast Saccharomyces cerevisiae. Amino acid sequence data from purified yeast CAF-I led to identification of the genes encoding each subunit in the yeast genome data base. The CAC1 and CAC2 (chromatin assembly complex) genes encode proteins similar to the p150 and p60 subunits of human CAF-I, respectively. The gene encoding the p50 subunit of yeast CAF-I (CAC3) is similar to the human p48 CAF-I subunit and was identified previously as MSI1, a member of a highly conserved subfamily of WD repeat proteins implicated in histone function in several organisms. Thus, CAF-I has been conserved functionally and structurally from yeast to human cells. Genes encoding the CAF-I subunits (collectively referred to as CAC genes) are not essential for cell viability. However, deletion of any CAC gene causes an increase in sensitivity to ultraviolet radiation, without significantly increasing sensitivity to gamma rays. This is consistent with previous biochemical data demonstrating the ability of CAF-I to assemble nucleosomes on templates undergoing nucleotide excision repair. Deletion of CAC genes also strongly reduces silencing of genes adjacent to telomeric DNA; the CAC1 gene is identical to RLF2 (Rap1p localization factor-2), a gene required for the normal distribution of the telomere-binding Rap1p protein within the nucleus. Together, these data suggest that CAF-I plays a role in generating chromatin structures in vivo

Progressive Dentistry and Stomatology: 6. Periodontoclasia: Etiology, Diagnosis and Treatment

n/