Modular course design

The modular design integrates, as far as possible, existing software from member states, to permit the free distribution of the package. Version 1.0 of PSAPACK was used in a IAEA international training course on PSA in safety decisions (1988). Since then, PSAPACK evolved in response to users requirements, and has been widely distributed. 

The makeup of Mo-based complexes, represented by 1 [3], offers an attractive opportunity for the design, synthesis, and development of effective chiral metathesis catalysts. This claim is based on several factors 1) Mo-based catalysts such as 1 possess a modular structure [4] involving imido and alkoxide moieties that do not disassociate from the metal center in the course of the catalytic cycle. Any structural alteration of these ligands may thus lead to a notable effect on the reaction outcome and could be employed to control selectivity and reactivity. 2) Alkoxide moieties offer an excellent opportunity for incorporation of chirality within the catalyst structure through installment of non-racemic tethered chiral bis(hydroxy) ligands. 3) Mo-based complexes provide appreciable levels of activity and may be utilized to prepare highly substituted alkenes. 

This paper is a progress report of the initial phase of an effort which is expected to take several years for completion. Given the present rapid rate of evolution of new concepts in the field of expert systems and artificial intelligence, the development of distributed systems and networks, and continued introduction of new machine features, the design outlined in this paper could be modified during the course of development. Nevertheless, we feel that the basic modular concept will be adhered to, and that modifications will be in the nature of implementation details. 

The air-assisted gravity conveyor or air slide is generally constructed from modular components giving a reasonably wide flexibility of design. For example, it is relatively easy to construct a system with multiple inlets and outlets, to divert oversize material and curve the chute around comers to deliver to all parts of the plant. Of course, the declination must be maintained over the length or else the flow will halt. 

Later in the project after the main parameters had been fixed it was necessary to build up a detailed picture of the expected performance tracing the interactions between the nuclear and thermal hydraulic aspects. This led to the development of the PATRIARCH scheme (see Pig. 1) of computer codes which forms a set of modular compatible programmes designed to cover all performance aspects. It was of course necessary to relate the development of PATRIARCH very closely to the flow of data arising from the experimental reactor physics programme and from the thermal and hydraulic rigs (ref. 4). 

The second component of onr project is the incorporation of nanoscale science experimentation into the introdnctoiy level cnrricula in each science discipline. In doing so, we emphasize topics of cnrrent research interest in nanoscale science and use a common instrament across traditional disciplines. We incorporate a modular approach to facilitate replacement of existing laboratory exercises rather than the replacement of an entire course, or the development of an additional conrse that might be poorly populated as an elective course in a number of majors. Each module is designed aroimd the use of a scanning probe microscope (SPM), operated as either a scanning tuimeling microscope (STM) or as an atomic force microscope (AFM), independent of the scientific discipline involved. We incorporate the SPM because it is commonly used in nanoscale science experiments and because one way to illustrate the field s interdisciplinary nature is to demonstrate the multiple ways one instmment can be used in several traditional fields to obtain results of interest to that field. Thus each module makes use of a SPM and a model for a SPM to instmct the students in a specific science discipline, and simultaneously in the fundamental concepts of nanoscale science. The modules themselves can be found online (15) and will be addressed more completely elsewhere. 

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