A systematic program design method can help developers ensure the correctness and performance of programs while minimizing the development cost. This book describes a method that starts with a clear specification of a computation and derives an efficient implementation by step-wise program analysis and transformations. The method applies to problems specified in imperative, database, functional...

Asynchronous circuit design is a beautiful application area for any formalism that can reason about parallelism By means of two small but challenging exercises we illustrate the similarities and di erences between parallel program and asynchronous circuit design The exercises are simple to state and have many solutions which are sometimes surprisingly e cient They all illustrate many aspects of...

This paper analyzed the characteristics of managed pressure drilling (MPD) technology and impact of wellhead back pressure on the wellbore annulus pressure profile, and found that the application of this technology provides room for improvement to the current casing program design. Meanwhile, the equivalent density of drilling fluid in wellbore annulus needs to consider the impact of back press...

In any program evaluation context, the quality and usefulness of an estimated intervention effect depends to a significant extent on its internal and external validity. If a study is internally valid, we can credibly state that the estimated impact was caused by the intervention being evaluated. If a study is externally valid, we can confidently extrapolate findings to a larger population of in...

From the Penn State College of Medicine, Department of Pediatrics, Penn State Children’s Hospital, Hershey, PA (M.G.); the Department of Pediatrics, University of Pennsylvania School of Medicine, Children’s Hospital of Pennsylvania, Philadelphia, PA (S.L.); the Department of Pediatrics, University of Florida College of Medicine – Jacksonville, Jacksonville, FL (E.Z.); and the Department of Pedi...

As a general framework, UNITY does not offer any specific facility for the design of distributed systems. For such systems, distribution aspects must be represented at a low level, resulting into intricated models and proofs. To provide a more abstract view of distributed systems, we propose two extensions to UNITY. The first one is an observation relation which is integrated in UNITY semantics...

Steinar Kristoffersen [email protected] University of Oslo Norway ABSTRACT For most rational systems development methods, distinct phases of construction work is envisaged: Analysis, design, programming, testing, etc. Different methods are often contrasted to each other with regards to the amount of design that is required before implementation, the importance for testing continually or the p...

Philip Jacob, is Program Development Coordinator, Segal Design Institute, Northwestern University, Evanston,, Illinois. The Segal Design Institute in the McCormick School of Engineering at Northwestern University offers an innovative design course called Engineering Design and Communication (EDC). EDC is a required program for all engineering undergraduates and is generally taken in their fresh...