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142.
Serge Autexier 《International Journal of Software and Informatics》2015,9(2):259-277
Semi-structured documents and data pervade modern workflows in all areas. Collaborative work and version management rely on effective, automatic difference analysis and three-way difference analysis tools. In our effort to develop a three-way difference analysis for tree-structured documents we developed a kernel three-way difference
algorithm which extends the equality-based procedures, such as GNU diff3, by considering the similarity of documents in the difference analysis as well as to ignore the order of data if that is semantically suitable. As a result we obtain difference analysis algorithms that can be more fine-tuned to the application domain. Moreover, the equality-based counter-parts of our three-way difference analysis algorithms has the idempotency property, which the current three-way diff algorithms lacks. 相似文献
143.
144.
Sylvain Degrandsart Serge Demeyer Jan Van den Bergh Tom Mens 《Software and Systems Modeling》2014,13(1):191-208
Context-aware computing is a paradigm for governing the numerous mobile devices surrounding us. In this computing paradigm, software applications continuously and dynamically adapt to different “contexts” implying different software configurations of such devices. Unfortunately, modelling a context-aware application (CAA) for all possible contexts is only feasible in the simplest of cases. Hence, tool support verifying certain properties is required. In this article, we introduce the CAA model, in which context adaptations are specified explicitly as model transformations. By mapping this model to graphs and graph transformations, we can exploit graph transformation techniques such as critical pair analysis to find contexts for which the resulting application model is ambiguous. We validate our approach by means of an example of a mobile city guide, demonstrating that we can identify subtle context interactions that might go unnoticed otherwise. 相似文献
145.
146.
Serge Kaliaguine 《加拿大化工杂志》1968,46(6):446-449
A new type of thermobalance has been built, Sample temperatures have been determined by a new technique called “thermogradientimetry”. A special crucible assembly allows control of the atmosphere surrounding the sample. Kinetic results for the three successive stages in the dehydration of copper sulphate indicate that the reactions involved are of zero order. The apparent activation energy for each stage of the dehydration has been avaluated under isobaric conditions for different water vapor pressures. 相似文献
147.
Numerous design choices need to be made at several levels when designing high-tech products: technology, processes, architecture, components, materials… and these choices need to be made in relation to the product life cycle with the corresponding experts for each stage of the life cycle. At the same time, to ensure product sustainability, a specific focus on the future potential environmental impacts is highly recommended. In this research, an agile model is proposed to help designers make decisions while monitoring environmental performance indicators of high-tech solutions. The concept of Critical Product Life Cycle Parameters had to be introduced to facilitate the eco-design of the final product. The approach is illustrated by the Electric Vehicle Li-Ion Batteries case study. 相似文献
148.
The stereochemical features displayed by the N-glycosidic linkagein crystalline N-linked glycoproteins are analyzed. From thestatistical analysis of 44 different glycosylation sites belongingto 26 glycoproteins of the Brookhaven Protein Data Bank, a meanstandard geometry for the GlcNAc moiety, along with a rationalizationof its confornia-tional behavior, can be proposed. As for theglycopeptide linkage, the distribution of observed conformationshas been analyzed on the basis of molecular mechanics calculations.The rotamer distribution of the Asn side chains conforms tothat observed on non-glycosylated structures, and it agreeswith the pattern of flexible conformations gathered from NMRmeasurements. In characterizing the protein-glycan interactions,some hydrogen bonds occur. Stacking between the amphiphilicmoiety of the glycan and some surrounding aromatic, or at leasthydrophobic, amino acid residues is also found. When lookingat the secondary structure of the glycosylated peptide, only25% of the glycosylation sites correspond to situations whereAsn is located at the top of a ß-turn. Other typesof secondary structure exist which fulfil the spatial requirementof having the glycan exposed at the surface of the protein.These data can be compared with the most recent studies on thepeptide conformation which would be required for glycosylation. 相似文献
149.
The role of Ag in simultaneously catalyzing NO reduction and C3H6 oxidation was shown to be strongly dependent on the redox properties of its local environment. Under an atmosphere of 1,000 ppm
NO, 3,000 ppm C3H6, and 1% O2 and a GHSV of 30,000 h−1, a perovskite La0.88Ag0.12FeO3 prepared by reactive grinding is active giving a complete NO conversion and 92% C3H6 conversion at 500 °C. These values are much higher than the NO conversion of 55% and C3H6 conversion of 45% obtained over a 3 wt.% Ag/Al2O3 catalyst under the same conditions. Under an excess of oxygen (10% O2) a good SCR performance with a plateau of N2 yield above 97% over a wide temperature window of 350–500 °C along with C3H6 conversion of 90% at 500 °C was observed over Ag/Al2O3, while minor N2 yields (∼10% at 250–350 °C) and high C3H6 conversions (reaching ∼100% at 450 °C) were obtained over La0.88Ag0.12FeO3. Abundant molecular oxygen is desorbed from Ag substituted perovskite after 10% O2 adsorption as verified by O2- temperature programmed desorption (TPD). This reflects the strongly oxidative properties of La0.88Ag0.12FeO3, which lead to a satisfactory NO reduction at 1% O2 due to the ease of nitrate formation but to a significant C3H6 combustion above that value. The formation of nitrate species over the less oxidizing Ag/Al2O3 was accelerated under an excess of oxygen resulting in an excellent lean NO reduction behavior. The redox properties of silver
catalysts could be adjusted via mixing perovskite with alumina for an optimal elimination of both NO and C3H6 over the whole range of oxygen concentration between 0 to 10%. 相似文献
150.