A rigorous design of millimeter-waveguide devices using the 3d finite element method

A rigorous filter design using the finite element method and an optimization process is described. To show the validity of this method, it is here applied to a millimeter-wavelength metal insert filter. The influence of higher order mode interactions and of metallic losses is also described. © 1994 John Wiley & Sons, Inc.     

Prise de décision dans un groupe de familles québécoises.

Both spouses in 60 francophone families were asked, in 20 situations, who usually made the decisions. This methodology reflects a spouse's perception of conjugal power. Data show that an egalitarian pattern of decision was present in most families and that the decision power of women was much greater than that of men. Results point to an evolution of the québécois family, which seems to have freed itself from the traditional patriarchal authority. (English abstract) (26 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sens et référence: estimation subjective de la familiarité des concepts.

Studied differences between subjective perceptions of familiarity with the meaning of words and subjective perceptions of familiarity with their referents. 560 university students (aged 17–63 yrs) were presented with a set of 130 words from a list of 520 words encompassing 18 semantic categories. Familiarity with the meaning of a word was measured by asking Ss to evaluate the ease with which they would recognize a definition of the word. Familiarity with the referent was measured by asking Ss to evaluate the ease with which they would recognize a picture of the object corresponding to the word. (English abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Sensitivity analysis of a four-pole filter

Rigorous analysis of a four-pole elliptic filter, constructed by placing two cascaded dielectric resonators operating on their first hybrid mode, is performed using the finite element method. Sensitivity analysis of the input-output and the interresonator rectangular and cross irises is presented. Theoretical and experimental results are compared.     

Mixing characteristics and performance of the anaerobic upflow blanket filter (UBF) reactor

Mixing characteristics (using a radioactive tracer) and reactor performance of the upflow blanket filter (UBF) reactor operated at different loading rates (up to 32 kg chemical oxygen demand (COD) m^?3 day^?1) were compared. The results indicated that mixing profiles of the reactor operated with effluent recirculation and without biomass were of the perfectly mixed type. Operation without recirculation resulted in about 18% dead space. The filter made of plastic rings and located in the top third of the reactor had no negative effect on reactor mixing. Operation at loading rates of up to 25 kg COD m^?3 day^?1 permitted a soluble COD removal rate of 95% with a methane production rate of 5.9 m³ m^?3 day^?1. At higher loading rates, the efficiency of COD reduction decreased with a decrease of the specific acetoclastic activity to 0.5 kg acetate removed per kg volatile suspended solids (VSS) day^?1. At all loading rates studied it was observed that the performance was not related to the mixing characteristics, which had remained of the perfectly mixed type with an occasional small dead space (below 10%). The good mixing characteristics of the UBF reactor coupled with the high biomass content and the effective action of the filter make this reactor one of the most promising designs for the treatment of soluble wastes.     

Le système informatique GEMAU

GEMAU is a software system for writing and adapting computer operating systems, especially in electronic switching. It generates abstract or virtual machines in formalizing the notions of objects and of relations between these objects. Solutions are proposed for banalisation, hierachy, protection, acces control mechanisms, execution and representation domains.     

Étude par microscopie électronique de composés NbGe,NbSi et NbGeSi de structure A15

NbGe, NbSi and NbGeSi compounds with the A15 structure, produced by chemical vapour deposition, were examined by transmission electron microscopy. These examinations showed that inhomogeneities, voids, precipitates and fibrous zones were embedded in the A15 matrix of the grains. The results are correlated with the superconducting properties of the materials and are discussed in terms of the instability of the A15 phase.     

Optical rotation of branched polysaccharides

Summary Correlation between optical activity and conformational behavior is attempted for the series of oligomannosides and pure mannan polysaccharide. Then, the principle of decomposing the contribution to optical rotation into some basic components is extended to the case of branched polymers. It is shown that the derived relationship fits the experimental rotation data gathered for this series. Conclusions about the influence of branching on solution behavior of galactomannan chains are drawn.     

Expert guided integration of induced knowledge into a fuzzy knowledge base

This paper proposes a method for building accurate and interpretable systems by integrating expert and induced knowledge into a single knowledge base. To favor the cooperation between expert knowledge and data, the induction process is run under severe constraints to ensure the fully control of the expert. The procedure is made up of two hierarchical steps. Firstly, a common fuzzy input space is designed according to both the data and expert knowledge. The compatibility of the two types of partitions, expert and induced, is checked according to three criteria : range, granularity and semantic interpretation. Secondly, expert rules and induced rules are generated according to the previous common fuzzy input space. Then, induced and expert rules have to be merged into a new rule base. Thanks to the common universe resulting from the first step, rule comparison can be made at the linguistic level only. The possible conflict situations are managed and the most important rule base features, consistency, redundancy and completeness, are studied. The first step is thoroughly described in this paper, while the second is only introduced.