We summarize our methodology for modeling space shuttle processing using discrete event simulation. Why the project was initiated, what the overall goals were, how it was funded, and who were the members of the project team are identified. We describe the flow of the space shuttle flight hardware through the supporting infrastructure and how the model was created to accurately portray the space...

Foreword This thesis is submitted in candidacy for the Ph.D. degree within the Physics Program at the Technical University of Denmark. The thesis describes part of the work that I have carried out under supervision of Antti-Pekka Jauho from the Department of Micro and Nanotechnology. I'm grateful to my supervisor for the very stimulating atmosphere that he has been able to create and maintain w...

NEWARK, N .J. [A.P.] — Got a cold? Dr. John T. Connell will pay you $30 to $50 a day to sit in his office and sneeze. Connell, a specialist in nose problems and allergies, is one of dozens of experts throughout the country who test cold remedies for drug companies trying to find out how well their products work. “ I’m an independent investi­ gator,” he said. “ They come to me. 1 design an exper...

The nanomechanical single-electron shuttle is a resonant system in which a suspended metallic island oscillates between and impacts at two electrodes. This setup holds promise for one-byone electron transport and the establishment of an absolute current standard. While the charge transported per oscillation by the nanoscale island will be quantized in the Coulomb blockade regime, the frequency ...

The use of exogeneous DNA probes, which replicate extrachromosomally, is proposed in order to study spontaneous and induced mutagenesis in mammalian cells. Simian virus 40 has already proved to be very useful, since it has provided much important information in this field. Recently, several shuttle vectors have been designed for this purpose; however, it seems that these molecules have high spo...

This paper describes the DATA-CHASER Automated Planner/Scheduler (DCAPS) system which automated generation and repair of command sequences for the DATA-CHASER shuttle payload. DCAPS uses general Artificial Intelligence (AI) heuristic search techniques, including an iterative repair framework in which the system iteratively resolves conflicts with the state, resource, and temporal constraints of...

A triose phosphate/3-phosphoglycerate shuttle for the indirect transfer of photosynthetically reduced NADP from chloroplasts to the cytoplasm has been demonstrated in vitro. Triose phosphate, formed from 3-phosphoglycerate in the chloroplast, was oxidized back to 3-phosphoglycerate outside the chloroplast by the nonreversible d-glyceraldehyde 3-phosphate dehydrogenase reaction which is specific...

Ice/frost formation on the Space Shuttle cryogenic propel 1 ant tanks presents a different problem from that of past launch vehicles. Lift off weight addition has been the primary concern on past launch vehicles. The primary ice/frost concern on the Shuttle vehicle is damage to the Orbiter Thermal Protection System due to ice/frost impact. The approach used to arrive at a solution to this uni­ ...

The concept of a competitive enzyme immunoassay that utilizes simultaneously the bound and the free analyte-enzyme conjugate (heterobifunctional conjugate) for signal generation in response to varying analyte concentrations in samples has been investigated. Two antigenic sites of the heterobifunctional conjugate are used in the assay for binding to immunoglobulins: the analyte derivative binds ...

This paper describes the DATA-CHASER Automated Planner/Scheduler (DCAPS) system for automated generation and repair of command sequences for the DATA-CHASER shuttle payload. DCAPS uses general Artificial Intelligence (AI) heuristic search techniques, including an iterative repair framework in which the system iteratively resolves conflicts with the state, resource, and temporal constraints of t...