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607 Research products, page 1 of 61

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  • Open Access English
    Authors: 
    Kontogiannis, Kostas;
    Publisher: Dagstuhl Seminar Proceedings. 06301 - Duplication, Redundancy, and Similarity in Software
    Country: Germany

    Many software systems contained cloned code, i.e., segments of code that are highly similar to each other, typically because one has been copied from the other, and then possibly modified. In some contexts, clones are of interest because they are targets for refactoring. This paper summarizes the results of a working session in which the problems of merely managing clones that are already known to exist. Six key issues in the space are briefly reviewed, and open questions raised in the working session are listed.

  • English
    Authors: 
    Ferrara, Ida; Missios, Paul;
    Country: Germany
    Project: SSHRC

    Households have choices when it comes to reducing waste sent to landfills: reduction of consumption or packaging, reuse of goods purchased, or recycling. In this paper, we adopt a holistic approach to the analysis of these choices as separate but related facets of households' waste management behaviour. Theoretically, households produce waste as a by-product of their consumption and must then deal with it either by curbside disposal or by recycling. To the extent that managing additional waste is costly even if only in terms of time, households may also engage in waste prevention, that is, produce less waste by reducing their consumption level and/or changing their consumption patterns in favour of less waste-intensive products. As curbside disposal, waste prevention and recycling relate to the same problem and are linked via several constraints, we employ a three-equation mixed process estimation strategy which allows for the error terms of the three equations to be correlated. For the study, we rely on an original data set that permits defining waste prevention comprehensively from a list of 19 waste prevention activities, that provides for a more balanced policy representation (in terms of presence versus absence of unit pricing), and that covers a wide range of attitudinal elements, values, and norms. Given the richness of the data set, we also examine individuals' decisions over recyclable items that carry a refundable deposit in terms of both purchasing and returning habits, with particular attention to the interaction between a refundable deposit system and unit pricing.

  • English
    Authors: 
    Tondji, Jean-Baptiste;
    Country: Germany

    I consider the model of a differentiated duopoly with process R&D when goods are either substitute, complements or independent. I propose a non-cooperative two-stage game with two firms producing differentiated goods. In the first stage, firms decide their technologies and in the second stage, they compete in quantities or prices. I evaluate the social welfare within a framework of Cournot and Bertrand competition models with or without investment in research and development. I prove that the Cournot price can be lower than Bertrand price when the R&D technology is relatively inefficient; thus, Cournot market structure can generate larger consumer's surplus and welfare.

  • Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/19164/Nov27-1875.pdf?sequence=2&isAllowed=y

  • Other research product . 1892
    Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/21363/Jun27-1892.pdf?sequence=2

  • Open Access English
    Authors: 
    Schneider, M.; Barthlott, S.; Hase, F.; González, Y.; Yoshimura, K.; García, O. E.; Sepúlveda, E.; Gomez-Pelaez, A.; Gisi, M.; Kohlhepp, R.; +16 more
    Project: NSERC , EC | MUSICA (256961)

    Within the project MUSICA (MUlti-platform remote Sensing of Isotopologues for investigating the Cycle of Atmospheric water), long-term tropospheric water vapour isotopologue data records are provided for ten globally distributed ground-based mid-infrared remote sensing stations of the NDACC (Network for the Detection of Atmospheric Composition Change). We present a new method allowing for an extensive and straightforward characterisation of the complex nature of such isotopologue remote sensing datasets. We demonstrate that the MUSICA humidity profiles are representative for most of the troposphere with a vertical resolution ranging from about 2 km (in the lower troposphere) to 8 km (in the upper troposphere) and with an estimated precision of better than 10%. We find that the sensitivity with respect to the isotopologue composition is limited to the lower and middle troposphere, whereby we estimate a precision of about 30‰ for the ratio between the two isotopologues HD16O and H216O. The measurement noise, the applied atmospheric temperature profiles, the uncertainty in the spectral baseline, and the cross-dependence on humidity are the leading error sources. We introduce an a posteriori correction method of the cross-dependence on humidity, and we recommend applying it to isotopologue ratio remote sensing datasets in general. In addition, we present mid-infrared CO2 retrievals and use them for demonstrating the MUSICA network-wide data consistency. In order to indicate the potential of long-term isotopologue remote sensing data if provided with a well-documented quality, we present a climatology and compare it to simulations of an isotope incorporated AGCM (Atmospheric General Circulation Model). We identify differences in the multi-year mean and seasonal cycles that significantly exceed the estimated errors, thereby indicating deficits in the modeled atmospheric water cycle.

  • Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/15057/Oct18-1917.pdf?sequence=2&isAllowed=y

  • Other research product . 1901
    Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/16562/Mar18-1901.pdf?sequence=2

  • Other research product . 1899
    Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/17623/Jun28-1899.pdf?sequence=2

  • Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/19025/Dec26-1874.pdf?sequence=2&isAllowed=y

search
Include:
The following results are related to Canada. Are you interested to view more results? Visit OpenAIRE - Explore.
607 Research products, page 1 of 61
  • Open Access English
    Authors: 
    Kontogiannis, Kostas;
    Publisher: Dagstuhl Seminar Proceedings. 06301 - Duplication, Redundancy, and Similarity in Software
    Country: Germany

    Many software systems contained cloned code, i.e., segments of code that are highly similar to each other, typically because one has been copied from the other, and then possibly modified. In some contexts, clones are of interest because they are targets for refactoring. This paper summarizes the results of a working session in which the problems of merely managing clones that are already known to exist. Six key issues in the space are briefly reviewed, and open questions raised in the working session are listed.

  • English
    Authors: 
    Ferrara, Ida; Missios, Paul;
    Country: Germany
    Project: SSHRC

    Households have choices when it comes to reducing waste sent to landfills: reduction of consumption or packaging, reuse of goods purchased, or recycling. In this paper, we adopt a holistic approach to the analysis of these choices as separate but related facets of households' waste management behaviour. Theoretically, households produce waste as a by-product of their consumption and must then deal with it either by curbside disposal or by recycling. To the extent that managing additional waste is costly even if only in terms of time, households may also engage in waste prevention, that is, produce less waste by reducing their consumption level and/or changing their consumption patterns in favour of less waste-intensive products. As curbside disposal, waste prevention and recycling relate to the same problem and are linked via several constraints, we employ a three-equation mixed process estimation strategy which allows for the error terms of the three equations to be correlated. For the study, we rely on an original data set that permits defining waste prevention comprehensively from a list of 19 waste prevention activities, that provides for a more balanced policy representation (in terms of presence versus absence of unit pricing), and that covers a wide range of attitudinal elements, values, and norms. Given the richness of the data set, we also examine individuals' decisions over recyclable items that carry a refundable deposit in terms of both purchasing and returning habits, with particular attention to the interaction between a refundable deposit system and unit pricing.

  • English
    Authors: 
    Tondji, Jean-Baptiste;
    Country: Germany

    I consider the model of a differentiated duopoly with process R&D when goods are either substitute, complements or independent. I propose a non-cooperative two-stage game with two firms producing differentiated goods. In the first stage, firms decide their technologies and in the second stage, they compete in quantities or prices. I evaluate the social welfare within a framework of Cournot and Bertrand competition models with or without investment in research and development. I prove that the Cournot price can be lower than Bertrand price when the R&D technology is relatively inefficient; thus, Cournot market structure can generate larger consumer's surplus and welfare.

  • Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/19164/Nov27-1875.pdf?sequence=2&isAllowed=y

  • Other research product . 1892
    Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/21363/Jun27-1892.pdf?sequence=2

  • Open Access English
    Authors: 
    Schneider, M.; Barthlott, S.; Hase, F.; González, Y.; Yoshimura, K.; García, O. E.; Sepúlveda, E.; Gomez-Pelaez, A.; Gisi, M.; Kohlhepp, R.; +16 more
    Project: NSERC , EC | MUSICA (256961)

    Within the project MUSICA (MUlti-platform remote Sensing of Isotopologues for investigating the Cycle of Atmospheric water), long-term tropospheric water vapour isotopologue data records are provided for ten globally distributed ground-based mid-infrared remote sensing stations of the NDACC (Network for the Detection of Atmospheric Composition Change). We present a new method allowing for an extensive and straightforward characterisation of the complex nature of such isotopologue remote sensing datasets. We demonstrate that the MUSICA humidity profiles are representative for most of the troposphere with a vertical resolution ranging from about 2 km (in the lower troposphere) to 8 km (in the upper troposphere) and with an estimated precision of better than 10%. We find that the sensitivity with respect to the isotopologue composition is limited to the lower and middle troposphere, whereby we estimate a precision of about 30‰ for the ratio between the two isotopologues HD16O and H216O. The measurement noise, the applied atmospheric temperature profiles, the uncertainty in the spectral baseline, and the cross-dependence on humidity are the leading error sources. We introduce an a posteriori correction method of the cross-dependence on humidity, and we recommend applying it to isotopologue ratio remote sensing datasets in general. In addition, we present mid-infrared CO2 retrievals and use them for demonstrating the MUSICA network-wide data consistency. In order to indicate the potential of long-term isotopologue remote sensing data if provided with a well-documented quality, we present a climatology and compare it to simulations of an isotope incorporated AGCM (Atmospheric General Circulation Model). We identify differences in the multi-year mean and seasonal cycles that significantly exceed the estimated errors, thereby indicating deficits in the modeled atmospheric water cycle.

  • Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/15057/Oct18-1917.pdf?sequence=2&isAllowed=y

  • Other research product . 1901
    Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/16562/Mar18-1901.pdf?sequence=2

  • Other research product . 1899
    Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/17623/Jun28-1899.pdf?sequence=2

  • Open Access English
    Publisher: Nanaimo Free Press
    Country: Canada

    https://viurrspace.ca/bitstream/handle/10613/19025/Dec26-1874.pdf?sequence=2&isAllowed=y