717 research outputs found

    Accesibilidad aplicada a embarcaciones, caso de estudio Centro de AtenciĂłn Ambulatoria Fluvial (CAAF)

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    Accessibility as a design concept is generally applied in land constructions; however, the medical character of the case study requires it to be considered in the design process as of its conceptual stage. The riverine ambulatory care center (RACC) is a mobile health unit to carry out medical missions in populations located on the riverbanks; given the RACC dimensions, these have limited medical services to primary care and health brigades. Physical barriers1 are the causes for an environment being inaccessible; to eliminate them, from the RACC, an analysis and redesign was performed of the conceptual proposal, based on standards for accessibility, medical spaces, and ships. Two basic moments were taken for intervention, access and interior circulation, yielding as a result the design of an integrated system of products that eliminate the physical barriers from the environment, permitting boarding and offering medical services under equal, comfortable, and safe conditions. Accessibility as modifier of the environment to improve the quality of life of users should not only be applied in medical ships, this study opens an opportunity for industry to optimize the physical environment of other types of ships by applying this concept.La accesibilidad como concepto de diseño se aplica generalmente en las construcciones en tierra, sin embargo, el caråcter médico del caso de estudio requiere que sea considerado en el proceso de diseño desde su etapa conceptual. El Centro de Atención Ambulatoria Fluvial (CAAF) es una unidad sanitaria móvil para realizar misiones médicas en poblaciones ubicadas en la ribera de los ríos, por las dimensiones del CAAF han limitado los servicios médicos a atención primaria y brigadas de salud. Las barreras físicas1 son las causantes de que un entorno no sea accesible, para eliminarlas del CAAF, se realizó un anålisis y rediseño de la propuesta conceptual, apoyado en la normativa para accesibilidad, espacios médicos y embarcaciones. Se tomaron dos momentos båsicos a intervenir, el acceso y la circulación interior, dando como resultado el diseño de un sistema integrado de productos que eliminan las barreras físicas del entorno, permitiendo un abordaje y prestación de los servicios médicos en condiciones iguales, confortables y seguras. La accesibilidad como modificador del entorno para mejorar la calidad de vida de los usuarios no debe ser aplicado solamente en embarcaciones médicas, con este estudio se abre una oportunidad para la industria de optimizar el entorno físico de otros tipos de embarcaciones, por medio de la aplicación de este concepto

    ÂżSon las vĂ­as de asfalto modificado con GCR la soluciĂłn para el problema de la malla vial en BogotĂĄ (Colombia)?

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    In synthesis, this article consists of a brief investigation about the mixture of GCR (Recycled Rubber Granule) with asphalt as a new alternative for the solution of the problem of the road mesh in Colombia, especially in the capital of the country. The research emphasizes the origin of its components, the processes that must be carried out to obtain such mixture, among other important aspects of it.En sĂ­ntesis, este artĂ­culo consiste de una breve investigaciĂłn acerca de la mezcla de GCR (Granulo de Caucho Reciclado) con asfalto como una nueva alternativa para la soluciĂłn al problema de la malla vial en Colombia, especialmente en la capital del paĂ­s. La investigaciĂłn hace Ă©nfasis en el origen de sus componentes, los procesos que se deben llevar a cargo para conseguir dicha mezcla, entre otros aspectos importantes del mismo

    Sizing Geographic of the Shale Gas Supply Chain: A Case of Mexico

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    With the enactment of energy reform in Mexico, some of the energy sector activities are opened to national and foreign private investment. It is expected that this new panorama generates important changes for this sector and thus produce significant positive effects on the economy, especially if national companies associated with its supply chain manage to insert in the new productive dynamic. To locate this context, this research allowed identifying, typifying and quantifying Mexican companies dedicated to carrying out economic activities associated with the shale gas core business, in order to measure each of the links in its supply chain and identify some of its main strengths and opportunities. The results show that in Mexico exist mainly micro and small enterprises engaged in the production of goods and services for this sector, supported in conventional resources, with low possibility of effective integration into the supply chain competitively in cost and quality, against international companies with experience in conducting this kind of activities

    Sustainability assessment of the valorization scheme of used cooking oils (UCOs): the case study of BogotĂĄ, Colombia

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    Harnessing of second-generation feedstocks via circular economy approaches is generally considered as environmentally friendly. Nonetheless, different potential impacts can be caused during collection and transformation of such feedstocks, affecting overall sustainability. Assessment of such impacts is of particular importance when producing waste-based biofuels. In this regard, this work’s aim was to carry out a sustainability assessment of the existing reclaiming and exploitation strategy of used cooking oil (UCO) in Bogota, Colombia. Currently, UCO is collected, pretreated, and mostly exported to Europe for biodiesel production. Based upon literature data and a life cycle assessment (LCA), several sustainability criteria were derived, measured, and interpreted within the framework of the integrative concept of sustainability (ICoS). As a reference system, results were compared with those obtained from assessing current production of first-generation palm-oil-based biodiesel. Results from LCA indicate that, per ton of UCO-based biodiesel, emissions of 1.06 kg PM2.5-eq, 2.54 kg NOx-eq, 607.6 kg CO2_2-eq, 2.81 kg SO2_2-eq, and 0.09 kg P-eq are generated and that there is use of 9.1 m3^3 water, and 259 kg oil-eq. UCO transportation and biodiesel production stages were the larger contributors to such impacts, and surprisingly, equivalent emissions of CO$_24 and fossil fuel consumption were higher than those of first-generation biodiesel. Nevertheless, UCO valorization displayed a better overall performance with respect to the reference system in terms of health, safety, environmental, economic, and social indicators. All impacts were reduced by 30 to 50% under a scenario of local production and consumption of biodiesel

    Construction and Demolition Waste: Challenges and Opportunities

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    The current production and consumption models of building materials are causing severe environmental and social problems worldwide. In this sense, construction and demolition waste (C&DW) are part of the problem and can be part of the solution, particularly in developing countries where the construction industry is growing very rapidly. Although many efforts have been made by stakeholders to increase the use of C&DW in construction materials, articulated efforts are required at global, national, and local scales to develop truly sustainable construction sectors. Therefore, this e-book, which is based on the “Special Issue on Construction and Demolition Waste: Challenges and Opportunities”, is an effort to articulate knowledge on novel and innovative building materials using C&DW and management systems to develop circular economy models (CE) for the construction sector. In this e-book, it is concluded that even though the valorization of C&DW has been developed worldwide, more incentives need to be provided to really convert the local and national construction chains in sustainable sectors, which appropriate the circular economy for production and consumption systems that imrpove, at the least, efficiency in terms of materials, water and energy use

    Disruptive and Conventional Technologies for the Support of Logistics Processes: A Literature Review

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    The supply chain has become a key element of increasing the productivity and competitiveness of companies. To achieve this, it is essential to implement a strategy based on the use of technologies, which depends on knowledge of the scope and impact of logistics technologies. Therefore, this article aims to identify the main technologies supporting logistics management and supply chain processes to establish their functionality, scope, and impacts. For this, conventional technologies and technologies framed by the concept of Industry 4.0 that allow the implementation of Logistics 4.0 in companies are analyzed. As a result of searching databases such as Scopus, Web of Science, and Science Direct, we provide an analysis of 18 technologies focusing on their definition, scope, and the logistics processes involved. This study concludes that technologies in logistics management allow for a reduction in total costs, improve collaboration with suppliers and customers, increase the visibility and traceability of products and information, and support decision-making for all agents in the supply chain, including the final consumer

    Green value stream mapping approach to improving productivity and environmental performance

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    [EN] Purpose The purpose of this paper is to introduce a new methodology called overall greenness performance for value stream mapping (OGP-VSM). Using value-added concepts, this approach has the potential to integrate, measure, control and improve productive and environmental performance in accordance with a companyÂżs context. Design/methodology/approach The OGP-VSM approach was developed by reviewing and integrating the environmental aspects of existing lean thinking tools and approaches. Findings This research revealed the lack of practical integration between productive and environmental performance. Using OGP-VSM, managers can see that environmental practices have a direct impact on productivity. OGP-VSM allows a balance to be found between lean and green practices in order to achieve the simultaneous improvement of productivity and environmental performance. Practical implications The proposed approach is applied to a case study in an automotive company in Spain and lays the groundwork for moving toward functional environmental sustainability in manufacturers. Originality/value Companies are increasingly implementing environmentally focused practices. Pursuing environmentally friendly (green) performance poses several challenges, but it also affords opportunities to create new methodologies for generating a competitive advantage for manufacturing companies. There are a limited number of approaches to drawing together the elements and attributes that are essential for a holistic, practical and long-lasting improvement of environmental performance in the manufacturing sectorThe work presented in this paper was carried out within the framework of the LIFE MCUBO research project funded by the European Union (LIFE15 ENV/ES/000379), through the LIFE programme. In addition, the authors would like to acknowledge the support received from AdP, the Special Patrimonial Fund at Universidad de La Sabana and the doctoral grant from TECNUN Escuela de Ingenieros, Universidad de Navarra.Muñoz-Villamizar, A.; Santos, J.; GarcĂ­a Sabater, JJ.; Lleo, A.; Grau, P. (2019). Green value stream mapping approach to improving productivity and environmental performance. International Journal of Productivity and Performance Management. 68(3):608-625. https://doi.org/10.1108/IJPPM-06-2018-0216S608625683Diaz-Elsayed, N., Jondral, A., Greinacher, S., Dornfeld, D., & Lanza, G. (2013). Assessment of lean and green strategies by simulation of manufacturing systems in discrete production environments. CIRP Annals, 62(1), 475-478. doi:10.1016/j.cirp.2013.03.066Maroto-SĂĄnchez, A. (2012). Productivity in the services sector: conventional and current explanations. The Service Industries Journal, 32(5), 719-746. doi:10.1080/02642069.2010.531266Mason, R., Nieuwenhuis, P., & Simons, D. (2008). Lean and green supply chain mapping: adapting a lean management tool to the needs of industrial ecology. Progress in Industrial Ecology, An International Journal, 5(4), 302. doi:10.1504/pie.2008.021921Molina-AzorĂ­n, J. F., TarĂ­, J. J., Claver-CortĂ©s, E., & LĂłpez-Gamero, M. D. (2009). Quality management, environmental management and firm performance: A review of empirical studies and issues of integration. International Journal of Management Reviews, 11(2), 197-222. doi:10.1111/j.1468-2370.2008.00238.xMolina‐AzorĂ­n, J. F., Claver‐CortĂ©s, E., LĂłpez‐Gamero, M. D., & TarĂ­, J. J. (2009). Green management and financial performance: a literature review. Management Decision, 47(7), 1080-1100. doi:10.1108/00251740910978313Montabon, F., Sroufe, R., & Narasimhan, R. (2006). An examination of corporate reporting, environmental management practices and firm performance. Journal of Operations Management, 25(5), 998-1014. doi:10.1016/j.jom.2006.10.003Morioka, S. N., & de Carvalho, M. M. (2016). A systematic literature review towards a conceptual framework for integrating sustainability performance into business. Journal of Cleaner Production, 136, 134-146. doi:10.1016/j.jclepro.2016.01.104Muñoz-Villamizar, A., Santos, J., Viles, E., & OrmazĂĄbal, M. (2018). Manufacturing and environmental practices in the Spanish context. Journal of Cleaner Production, 178, 268-275. doi:10.1016/j.jclepro.2018.01.026Netland, T. H., Schloetzer, J. D., & Ferdows, K. (2015). Implementing corporate lean programs: The effect of management control practices. Journal of Operations Management, 36(1), 90-102. doi:10.1016/j.jom.2015.03.005Ng, R., Low, J. S. C., & Song, B. (2015). Integrating and implementing Lean and Green practices based on proposition of Carbon-Value Efficiency metric. Journal of Cleaner Production, 95, 242-255. doi:10.1016/j.jclepro.2015.02.043(2001). Measuring Productivity - OECD Manual. doi:10.1787/9789264194519-enOrmazabal, M., Viles, E., Santos, J., & Jaca, C. (2018). An overview of environmental management in the Spanish food sector: a survey study. Management of Environmental Quality: An International Journal, 29(1), 49-62. doi:10.1108/meq-10-2016-0072Sunder M., V., Ganesh, L. S., & Marathe, R. R. (2018). A morphological analysis of research literature on Lean Six Sigma for services. International Journal of Operations & Production Management, 38(1), 149-182. doi:10.1108/ijopm-05-2016-0273Thanki, S. J., & Thakkar, J. J. (2016). Value–value load diagram: a graphical tool for lean–green performance assessment. Production Planning & Control, 27(15), 1280-1297. doi:10.1080/09537287.2016.1220647Tilina, D. I., Zapciu, M., & Bendic, V. (2014). The Link between Lean and Green Manufacturing - A Way to Reach Sustainable Development. Applied Mechanics and Materials, 656, 534-541. doi:10.4028/www.scientific.net/amm.656.534US EPA (2007), “The lean and environment toolkit”, available at: www.epa.gov/lean/lean-environment-toolkit (accessed January 24, 2018).US EPA (2011), “The lean and water toolkit”, available at: www.epa.gov/lean/lean-water-toolkit (accessed January 24, 2018)

    Indicators Affecting the Urban Resilience with a Scenario Approach in Tehran Metropolis

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    Urban resilience refers to the capacity of an urban system to fully recover from unforeseen calamities. This study aims to assess the physical resilience indicators used to measure urban resilience in Tehran, the political and economic capital of Iran, and to pinpoint the most significant direct and indirect influences on urban resilience. The research process divided into two parts. The environmental scanning approach (reviewing papers and published sources, interviewing specialists, and monitoring conferences) and the literature review were employed in the first part to compile a database of the key information on the elements impacting physical resilience. The most significant factors impacting physical resilience over the next ten years were requested to be identified by specialists and intellectuals in the second part. Finally, the MicMac program was used to analyze the data after 29 variables were specified in Delphi. In light of the trace-analysis-dependence diagram, which depicts the instability of the influential factors and the persistence of their impact on other variables, the results demonstrate that Tehran’s physical resilience is in an unstable condition. According to the results, the factors that have the maximum impact on other variables are granularity drivers, emergency evacuation capacity, rescue and security spaces (emergency, fire station, and police station), impermeability, rate of the amendment and retrofitting measures in the buildings of each zone, building age, and the compatibility of land uses. The variables that are most susceptible to change from other variables include the distribution status of dangerous land uses, the quality of the buildings, the rate of historically vulnerable buildings, the vulnerability of internal and external roads, the rate of improvements and retrofitting measures in buildings in each zone, as well as historically vulnerable historical buildings

    City indicators : now to Nanjing

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    This paper provides the key elements to develop an integrated approach for measuring and monitoring city performance globally. The paper reviews the role of cities and why indicators are important. Then it discusses past approaches to city indicators and the systems developed to date, including the World Bank's initiatives. After identifying the strengths and weaknesses of past experiences, it discusses the characteristics of optimal indicators. The paper concludes with a proposed plan to develop standardized indicators that emphasize the importance of indicators that are measurable, replicable, potentially predictive, and most important, consistent and comparable over time and across cities. As an innovative characteristic, the paper includes subjective measures in city indicators, such as well-being, happy citizens, and trust.Cultural Policy,City Development Strategies,Cultural Heritage&Preservation,ICT Policy and Strategies,Housing&Human Habitats
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