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    Economic and Technical Analysis of Universal Accessibility in Social and Private Housing in Chile
    (2020)
    FERRADA CALVO, XIMENA VERÓNICA  
    ;
    C Valderrama
    ;
    C Fuentes-Contreras
    According to studies of accessibility in Chile show that the country is aging, by 2050 the population of the third age will increase to more than double where, in addition, the third of that group will develop some type of disability, with the physical type prevailing. Under this problem, Chile has modified his regulatory building body (OGUC) in 2016 establishing new design standards in order to have homes with basic characteristics of accessibility universal. But these modifications are not retroactive in housing policy. Because of this, the present study analyzes the incorporation of accessibility standards into social and private housing that are already built. Technically, it discusses basic solutions to comply with the regulatory approaches and then analyze the economic impact of the solutions, along with the modifications of non-structural elements for regulatory compliance without changing the useful surface of the housing. Showing to achieve accessibility in an existing private home the cost can increase by 0.08 UF/m2 and for social housing by 0.05 UF/m2. The study shows that with a good projection of the evolution of the people who will inhabit the houses, in conjunction with decisions from the design stage, they can have affordable housing at a low cost preventing the owner have to make large investments for adapt his house to any situation of disability that may be present throughout life. © 2020 Published under licence by IOP Publishing Ltd.
      2Scopus© Citations 6
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    An integrated multi-criteria decision analysis and optimization modeling approach to spatially operational road repair decisions
    (2021)
    Sättar Ezzati
    ;
    PALMA INFANTE, CRISTIAN DERECK  
    ;
    Pete Bettinger
    ;
    Ljusk Ola Eriksson
    ;
    Anjali Awasthi
    In this study, we developed a generic cost-effective approach for spatially explicit decision support involving the allocation of road repair treatments. The approach begins with an assessment of the existing road condition to identify the extent of environmental impacts and to determine road repair regimes in a subjective manner using group-decision making efforts. An integer programming model is then formulated by combining expert opinions with operational costs to guide repair schedules required for each road segment at the operational planning level. To demonstrate model performance, we applied it to a 400 km<jats:sup>2</jats:sup> landscape consisting of 289 km of paved roads in the mountainous region of the Hyrcanian forests in Iran. We assessed sensitivity of the inputs, such as weight verification, budgetary limitations, and rehabilitation weights. The results of the subjective analysis show that 76% of the roads analyzed in these forests must be prioritized to receive treatments as intended for logistical purposes. Incorporating the extent of environmental dimensions into operational costs allows us to generate an optimal tradeoff curve by selecting an appropriate treatment for segments of a road network. The approach demonstrated here can be used to design detailed alternative solutions for addressing spatially-informed road decisions under various terrain conditions.
      4Scopus© Citations 5
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      6Scopus© Citations 4
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    The impact of bus punctuality on users’ decisions and welfare
    (2022)
    Fernando Feres
    ;
    Franco Basso
    ;
    Raúl Pezoa
    ;
    VARAS VALDÉS, MAURICIO ANDRÉS  
    ;
    Eusebio Vargas-Estrada
    Scopus© Citations 9  4
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    Viability analysis of underground mining machinery using green hydrogen as a fuel
    (2020)
    C. Fúnez Guerra
    ;
    L. Reyes-Bozo
    ;
    E. Vyhmeister
    ;
    M. Jaén Caparrós
    ;
    J.L. Salazar
    Scopus© Citations 34  2
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    Scopus© Citations 251  1
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    Scopus© Citations 5  2