I am very pleased to see Donahoe, Palmer, and Burgos foster this important discussion with a very clear and cogent paper. I find their reasoning inescapable that environment–behavior relations are what is always conditioned. My own computer model of operant behavior is built on the same assumptions (Hutchison, 1984, 1985, 1995, 1997; Stephens & Hutchison, 1993), and the many simulations I have ...

This project aims to model the h-index of a firm as a function of several properties of the owning organization’s patent co-authorship and citation networks. Studies have shown that the number of forward citations a patent receives strongly correlate with its market value [3], which is of great interest to potential investors. Unfortunately, future number of forward citations of particularly hi...

against several kind of sickness including cancer, gastric ulcers, dyspepsia and also useful as an antibacterial and antiinflammatory. Sesquiterpenes, triterpenes, quinone-methide and sesquiterpene pyridine alkaloids have been identified in these species. Maytenus obtusifolia MART. is a plant found in many states of the Northeast and South-east of Brazil, which is used in traditional medicine f...

The Keccak hash function is one of the five finalists in NIST’s SHA-3 competition, and so far it showed remarkable resistance against practical collision finding attacks: After several years of cryptanalysis and a lot of effort, the largest number of Keccak rounds for which actual collisions were found was only 2. In this paper we develop improved collision finding techniques which enable us to...

science&justice Volume 42 No.4 (2002) 223 – 224 Page 223 *Corresponding author © The Forensic Science Society 2002