The formal verification of compilers and related programming tools depends crucially on the availability of appropriate mechanized semantics for the source, intermediate and target languages. In this invited talk, I review various forms of operational semantics and their mechanization, based on my experience with the formal verification of the CompCert C compiler. What does this program do, exa...

The following outline summarizes some suggestions about ways in which translation may be mechanized that were worked out by the authors in 19481952. The treatment is not exhaustive, and many modifications in detail would certainly be necessary should the ideas here mooted be put into active operation. It is considered, however, that it would be serviceable to describe the techniques here envisa...

Formal, modular, and mechanized verification of realistic systems code is desirable but challenging. Verification of machine context management (a basis of multi-tasking) is one representative example. With context operations occurring hundreds to thousands of times per second on every computer, their correctness deserves careful examination. Given the small and stable code bases, it is a commo...

Rock abrasivity is an essential factor for selecting cutting tools, estimating tool wear and life, and ultimately, matching various mechanized excavation systems with a given geologic condition. It also assists engineers to determine economic limits of different cutting tools and machines used in civil and mining projects. The Cerchar abrasion test is a simple and most widely used method for ro...

introduction : the pectoralis major flap is the best flap for head and neck defects. this flap has both a vascular pedicle and some disadvantages such as deformity, needing tunneling, clavicular f.x and shortening after the tunneling. case presentation: the patient was a 56 years old man with large face defect from child hood. the patient had two surgical failures in her history. external pecto...

ion in AI and CS In the early days of CS, algorithms were often seen as an abstract formulation of procedures. Nowadays, this workshop illustrates well that category theory is associated to an abstract formulation of CS. The example of computer algebra teaches us that such methodologies do not amount to a full abstraction paradigm. Giunchiglia and Walsh introduced theories of abstraction for me...