1,702 research outputs found

    The case of Ferbritas Cadastre Information System

    Get PDF
    The processes of mobilization of land for infrastructures of public and private domain are developed according to proper legal frameworks and systematically confronted with the impoverished national situation as regards the cadastral identification and regularization, which leads to big inefficiencies, sometimes with very negative impact to the overall effectiveness. This project report describes Ferbritas Cadastre Information System (FBSIC) project and tools, which in conjunction with other applications, allow managing the entire life-cycle of Land Acquisition and Cadastre, including support to field activities with the integration of information collected in the field, the development of multi-criteria analysis information, monitoring all information in the exploration stage, and the automated generation of outputs. The benefits are evident at the level of operational efficiency, including tools that enable process integration and standardization of procedures, facilitate analysis and quality control and maximize performance in the acquisition, maintenance and management of registration information and expropriation (expropriation projects). Therefore, the implemented system achieves levels of robustness, comprehensiveness, openness, scalability and reliability suitable for a structural platform. The resultant solution, FBSIC, is a fit-for-purpose cadastre information system rooted in the field of railway infrastructures. FBSIC integrating nature of allows: to accomplish present needs and scale to meet future services; to collect, maintain, manage and share all information in one common platform, and transform it into knowledge; to relate with other platforms; to increase accuracy and productivity of business processes related with land property management

    Prioridades competitivas y sistemas de información en la empresa manufacturera española del siglo XVIII: análisis de un caso

    Get PDF
    A lo largo de esta década, investigadores pertenecientes a diversas áreas de especialización han sugerido la importancia de diseñar un modelo integrado de indicadores del rendimiento de las innovaciones tecnológicas, similar al conocido Balanced Scorecard (Kaplan y Norton, 1992), que pudiera complementar, cuando no sustituir, al actual modelo imperante; éste descansa, principalmente, en indicadores financieros y variables macroeconómicas, no siempre fácilmente interpretables por las empresas adoptantes de las innovaciones. El nuevo marco conceptual de referencia, según se sugiere en la literatura, debería buscar el alineamiento entre los objetivos estratégicos empresariales, relacionados directamente con sus prioridades competitivas, y los parámetros de medición del cumplimiento de dichos objetivos y prioridades. En dicho marco, la información utilizada por los sistemas de contabilidad para la toma de decisión, o contabilidad estratégica, se ha mostrado particularmente útil, tal y como se desprende de los resultados de diferentes trabajos empíricos recientes. El objetivo de este artículo es poner de manifiesto que la utilización de estos sistemas de información integradores no constituye, necesariamente, una novedad en todos sus aspectos (en contra de 10 señalado por Atkinson et al., 1997, entre otros), como demuestra el análisis del sistema de información para la dirección empleado en el siglo XVIII en la Real Fábrica de Tabacos de Sevilla, la mayor planta manufacturera europea en aquel momento. A lo largo de este artículo iremos describiendo, a partir de la información archivística existente, cómo la estrategia empresarial establecida para esta organización condicionó el diseño, seguimiento y control de sus procesos productivos y cómo se buscó el alineamiento entre la estrategia de la empresa, la estrategia de operaciones y el sistema de información para lograr la consecución de una rentabilidad sostenida

    The economic sustainability of tourism growth through leakage calculation

    Full text link
    The development and growth of tourism depend on its sustainability over time and on its benefits for destinations as a whole. However, calculating sustainability is not an easy task. This article focuses on the economic sustainability of tourism growth and, after an exhaustive review of the literature, proposes a quantitative mathematical model to measure it by analysing and calculating leakage in the hotel sector. Leakage analyses the amount of revenue generated by tourists that does not remain in the destination economy. Through a sample of 204 interviews with managers, this study validates the model created and calculates leakage in a mass tourism destination (the Valencian Region in Spain). The paper opens new areas of research in sustainability literature and will be of value to tourism planners and governments in their efforts to implement appropriate tourism development policies.Garrigós Simón, FJ.; Galdón Salvador, JL.; Gil Pechuán, I. (2015). The economic sustainability of tourism growth through leakage calculation. Tourism Economics. 21(4):721-739. doi:10.5367/te.2014.0372S721739214Abelson, P. (2011). Evaluating Major Events and Avoiding the Mercantilist Fallacy*. Economic Papers: A journal of applied economics and policy, 30(1), 48-59. doi:10.1111/j.1759-3441.2011.00096.xAdams, P. D., & Parmenter, B. R. (1995). An applied general equilibrium analysis of the economic effects of tourism in a quite small, quite open economy. Applied Economics, 27(10), 985-994. doi:10.1080/00036849500000079Archer, B. (1995). Importance of tourism for the economy of Bermuda. Annals of Tourism Research, 22(4), 918-930. doi:10.1016/0160-7383(95)00018-1Archer, B., & Fletcher, J. (1996). The economic impact of tourism in the Seychelles. Annals of Tourism Research, 23(1), 32-47. doi:10.1016/0160-7383(95)00041-0Arrow, K., Bolin, B., Costanza, R., Dasgupta, P., Folke, C., Holling, C. S., … Pimentel, D. (1995). Economic Growth, Carrying Capacity, and the Environment. Science, 268(5210), 520-521. doi:10.1126/science.268.5210.520Asiedu, A. B. (2008). Participants’ characteristics and economic benefits of visiting friends and relatives (VFR) tourism - an international survey of the literature with implications for Ghana. International Journal of Tourism Research, 10(6), 609-621. doi:10.1002/jtr.698Blake, A., & Sinclair, M. T. (2003). TOURISM CRISIS MANAGEMENT. Annals of Tourism Research, 30(4), 813-832. doi:10.1016/s0160-7383(03)00056-2Blake, A., Arbache, J. S., Sinclair, M. T., & Teles, V. (2008). Tourism and poverty relief. Annals of Tourism Research, 35(1), 107-126. doi:10.1016/j.annals.2007.06.013Buhalis, D., & Law, R. (2008). Progress in information technology and tourism management: 20 years on and 10 years after the Internet—The state of eTourism research. Tourism Management, 29(4), 609-623. doi:10.1016/j.tourman.2008.01.005Correspondence. (1999). Annals of Tourism Research, 26(3), 705-708. doi:10.1016/s0160-7383(99)00011-0Budeanu, A. (2007). Sustainable tourist behaviour ? a discussion of opportunities for change. International Journal of Consumer Studies, 31(5), 499-508. doi:10.1111/j.1470-6431.2007.00606.xBUTLER, R. W. (1980). THE CONCEPT OF A TOURIST AREA CYCLE OF EVOLUTION: IMPLICATIONS FOR MANAGEMENT OF RESOURCES. The Canadian Geographer/Le Géographe canadien, 24(1), 5-12. doi:10.1111/j.1541-0064.1980.tb00970.xButler, R. W. (1999). Sustainable tourism: A state‐of‐the‐art review. Tourism Geographies, 1(1), 7-25. doi:10.1080/14616689908721291Carbone, M. (2005). Sustainable Tourism in Developing Countries: Poverty Alleviation, Participatory Planning, and Ethical Issues. The European Journal of Development Research, 17(3), 559-565. doi:10.1080/09578810500209841Cawley, M., & Gillmor, D. A. (2008). Integrated rural tourism: Annals of Tourism Research, 35(2), 316-337. doi:10.1016/j.annals.2007.07.011Cernat, L., & Gourdon, J. (2012). Paths to success: Benchmarking cross-country sustainable tourism. Tourism Management, 33(5), 1044-1056. doi:10.1016/j.tourman.2011.12.007Chhabra, D., Sills, E., & Cubbage, F. W. (2003). The Significance of Festivals to Rural Economies: Estimating the Economic Impacts of Scottish Highland Games in North Carolina. Journal of Travel Research, 41(4), 421-427. doi:10.1177/0047287503041004012Dritsakis, N. (2004). Tourism as a Long-Run Economic Growth Factor: An Empirical Investigation for Greece Using Causality Analysis. Tourism Economics, 10(3), 305-316. doi:10.5367/0000000041895094Dritsakis, N. (2012). Tourism Development and Economic Growth in Seven Mediterranean Countries: A Panel Data Approach. Tourism Economics, 18(4), 801-816. doi:10.5367/te.2012.0140Dwyer, L., Forsyth, P., Madden, J., & Spurr, R. (2000). Economic Impacts of Inbound Tourism under Different Assumptions Regarding the Macroeconomy. Current Issues in Tourism, 3(4), 325-363. doi:10.1080/13683500008667877Dwyer, L., Forsyth, P., & Spurr, R. (2006). Assessing the Economic Impacts of Events: A Computable General Equilibrium Approach. Journal of Travel Research, 45(1), 59-66. doi:10.1177/0047287506288907Frechtling, D. C., & Horváth, E. (1999). Estimating the Multiplier Effects of Tourism Expenditures on a Local Economy through a Regional Input-Output Model. Journal of Travel Research, 37(4), 324-332. doi:10.1177/004728759903700402Simón, F. J. G., Narangajavana, Y., & Marqués, D. P. (2004). Carrying capacity in the tourism industry: a case study of Hengistbury Head. Tourism Management, 25(2), 275-283. doi:10.1016/s0261-5177(03)00089-xGartner, W. C. (s. f.). SMALL SCALE ENTERPRISES IN THE TOURISM INDUSTRY IN GHANA’S CENTRAL REGION. CONTEMPORARY ISSUES IN TOURISM DEVELOPMENT, 158-175. doi:10.4324/9780203380307_chapter_10Gooroochurn, N., & Thea Sinclair, M. (2005). Economics of tourism taxation. Annals of Tourism Research, 32(2), 478-498. doi:10.1016/j.annals.2004.10.003Haddad, E. A., Porsse, A. A., & Rabahy, W. (2013). Domestic Tourism and Regional Inequality in Brazil. Tourism Economics, 19(1), 173-186. doi:10.5367/te.2013.0185Hjerpe, E. E., & Kim, Y.-S. (2007). Regional economic impacts of Grand Canyon river runners. Journal of Environmental Management, 85(1), 137-149. doi:10.1016/j.jenvman.2006.08.012Hohl, A. E., & Tisdell, C. A. (1995). Peripheral tourism. Annals of Tourism Research, 22(3), 517-534. doi:10.1016/0160-7383(95)00005-qHughes, H. L. (1994). Tourism multiplier studies: a more judicious approach. Tourism Management, 15(6), 403-406. doi:10.1016/0261-5177(94)90059-0Huse, M., Gustavsen, T., & Almedal, S. (1998). Tourism impact comparisons among norwegian towns. Annals of Tourism Research, 25(3), 721-738. doi:10.1016/s0160-7383(98)00019-xKim, S. S., Chon, K., & Chung, K. Y. (2003). Convention industry in South Korea: an economic impact analysis. Tourism Management, 24(5), 533-541. doi:10.1016/s0261-5177(03)00006-2Klijs, J., Heijman, W., Maris, D. K., & Bryon, J. (2012). Criteria for Comparing Economic Impact Models of Tourism. Tourism Economics, 18(6), 1175-1202. doi:10.5367/te.2012.0172Kokkranikal, J., McLellan, R., & Baum, T. (2003). Island Tourism and Sustainability: A Case Study of the Lakshadweep Islands. Journal of Sustainable Tourism, 11(5), 426-447. doi:10.1080/09669580308667214Kweka, J., Morrissey, O., & Blake, A. (2003). The economic potential of tourism in Tanzania. Journal of International Development, 15(3), 335-351. doi:10.1002/jid.990Lacher, R. G., & Nepal, S. K. (2010). From Leakages to Linkages: Local-Level Strategies for Capturing Tourism Revenue in Northern Thailand. Tourism Geographies, 12(1), 77-99. doi:10.1080/14616680903493654Lee, C.-C., & Chang, C.-P. (2008). Tourism development and economic growth: A closer look at panels. Tourism Management, 29(1), 180-192. doi:10.1016/j.tourman.2007.02.013Lejárraga, I., & Walkenhorst, P. (2010). On linkages and leakages: measuring the secondary effects of tourism. Applied Economics Letters, 17(5), 417-421. doi:10.1080/13504850701765127Mbaiwa, J. E. (2005). Enclave tourism and its socio-economic impacts in the Okavango Delta, Botswana. Tourism Management, 26(2), 157-172. doi:10.1016/j.tourman.2003.11.005Mihalič, T. (2000). Environmental management of a tourist destination. Tourism Management, 21(1), 65-78. doi:10.1016/s0261-5177(99)00096-5Morrison, A., & Thomas, R. (1999). The future of small firms in the hospitality industry. International Journal of Contemporary Hospitality Management, 11(4), 148-154. doi:10.1108/09596119910263531Mowforth, M. (2003). Tourism and Sustainability. doi:10.4324/9780203422779Mshenga, P. M., & Richardson, R. B. (2012). Micro and small enterprise participation in tourism in coastal Kenya. Small Business Economics, 41(3), 667-681. doi:10.1007/s11187-012-9449-5Patterson, T. M., Niccolucci, V., & Marchettini, N. (2008). Adaptive environmental management of tourism in the Province of Siena, Italy using the ecological footprint. Journal of Environmental Management, 86(2), 407-418. doi:10.1016/j.jenvman.2006.04.017Pratt, S. (2011). Economic linkages and impacts across the talc. Annals of Tourism Research, 38(2), 630-650. doi:10.1016/j.annals.2010.11.014Pratt, S., & Blake, A. (2009). The Economic Impact of Hawaii’s Cruise Industry. Tourism Analysis, 14(3), 337-351. doi:10.3727/108354209789704977Rid, W., Ezeuduji, I. O., & Pröbstl-Haider, U. (2014). Segmentation by motivation for rural tourism activities in The Gambia. Tourism Management, 40, 102-116. doi:10.1016/j.tourman.2013.05.006Saarinen, J. (2006). Traditions of sustainability in tourism studies. Annals of Tourism Research, 33(4), 1121-1140. doi:10.1016/j.annals.2006.06.007Sandbrook, C. G. (2008). Putting leakage in its place: The significance of retained tourism revenue in the local context in Rural Uganda. Journal of International Development, 22(1), 124-136. doi:10.1002/jid.1507Shaalan, I. M. (2005). Sustainable tourism development in the Red Sea of Egypt threats and opportunities. Journal of Cleaner Production, 13(2), 83-87. doi:10.1016/j.jclepro.2003.12.012Sheng, L., & Tsui, Y. (2009). Taxing tourism: enhancing or reducing welfare? Journal of Sustainable Tourism, 17(5), 627-635. doi:10.1080/09669580902855828Simpson, P., & Wall, G. (1999). Consequences of resort development. A comparative study. Tourism Management, 20(3), 283-296. doi:10.1016/s0261-5177(99)00025-4Slee, B., Farr, H., & Snowdon, P. (1997). THE ECONOMIC IMPACT OF ALTERNATIVE TYPES OF RURAL TOURISM. Journal of Agricultural Economics, 48(1-3), 179-192. doi:10.1111/j.1477-9552.1997.tb01144.xTorres, R. (2003). Linkages between tourism and agriculture in Mexico. Annals of Tourism Research, 30(3), 546-566. doi:10.1016/s0160-7383(02)00103-2Wagner, J. E. (1997). Estimating the economic impacts of tourism. Annals of Tourism Research, 24(3), 592-608. doi:10.1016/s0160-7383(97)00008-xWalpole, M. J., & Goodwin, H. J. (2000). Local economic impacts of dragon tourism in Indonesia. Annals of Tourism Research, 27(3), 559-576. doi:10.1016/s0160-7383(99)00088-2Zhang, J., Madsen, B., & Jensen-Butler, C. (2007). Regional Economic Impacts of Tourism: The Case of Denmark. Regional Studies, 41(6), 839-854. doi:10.1080/00343400701281733Zhou, D., Yanagida, J. F., Chakravorty, U., & Leung, P. (1997). Estimating economic impacts from tourism. Annals of Tourism Research, 24(1), 76-89. doi:10.1016/s0160-7383(96)00035-

    Proton charge radius extraction from muon scattering at MUSE using dispersively improved chiral effective field theory

    Get PDF
    The MUSE experiment at Paul Scherrer Institute will perform the first measurement of low-energy muon-proton elastic scattering (muon lab momenta 115–210 MeV) with the aim of determining the proton charge radius. We study the prospects for the proton radius extraction using the theoretical framework of dispersively improved chiral effective field theory (DIχEFT). It connects the proton radii with the finite-Q2 behavior of the form factors through complex analyticity and enables the use of data up to Q2 ∼ 0.1 GeV2 for radius extraction. We quantify the sensitivity of the μp cross section to the proton charge radius, the theoretical uncertainty of the cross section predictions, and the size of two-photon exchange corrections. We find that the optimal kinematics for radius extraction at MUSE is at momenta 210 MeV and Q2 ∼ 0.05–0.08 GeV2. We compare the performance of electron and muon scattering in the same kinematics. As a by-product, we obtain explicit predictions for the μp and ep cross sections at MUSE as functions of the assumed value of the proton radius.Agencia Estatal de Investigació

    Hemangiolymphangioma of the spermatic cord in a 17 year-old: A case report

    Get PDF
    AbstractBackgroundHemangiolymphangiomas are extremely rare tumours arising from blood and lymphatic vessels. It is a benign disorder, and 95% are of the neck and axilla.ObjectiveTo present a case of hemangiolymphangioma of the spermatic cord with contralateral recurrence.Clinical caseA 17-year-old patient with a progressively growing tumour in the right inguinoscrotal region. Examination revealed a painless, movable and soft right inguinoscrotal tumour, mobile and soft. Surgical resection showed a 25cm×25cm tumour from spermatic cord, right testicle, and subcutaneous cellular tissue. Histopathological study reported a hemangiolymphangioma.ConclusionsThe spermatic cord is an unusual location of hemangiolymphangiomas with contralateral recurrence. Surgical treatment, with histopathological diagnosis, is associated with good prognosis

    Optimization techniques for computationally expensive rendering algorithms

    Get PDF
    Realistic rendering in computer graphics simulates the interactions of light and surfaces. While many accurate models for surface reflection and lighting, including solid surfaces and participating media have been described; most of them rely on intensive computation. Common practices such as adding constraints and assumptions can increase performance. However, they may compromise the quality of the resulting images or the variety of phenomena that can be accurately represented. In this thesis, we will focus on rendering methods that require high amounts of computational resources. Our intention is to consider several conceptually different approaches capable of reducing these requirements with only limited implications in the quality of the results. The first part of this work will study rendering of time-­¿varying participating media. Examples of this type of matter are smoke, optically thick gases and any material that, unlike the vacuum, scatters and absorbs the light that travels through it. We will focus on a subset of algorithms that approximate realistic illumination using images of real world scenes. Starting from the traditional ray marching algorithm, we will suggest and implement different optimizations that will allow performing the computation at interactive frame rates. This thesis will also analyze two different aspects of the generation of anti-­¿aliased images. One targeted to the rendering of screen-­¿space anti-­¿aliased images and the reduction of the artifacts generated in rasterized lines and edges. We expect to describe an implementation that, working as a post process, it is efficient enough to be added to existing rendering pipelines with reduced performance impact. A third method will take advantage of the limitations of the human visual system (HVS) to reduce the resources required to render temporally antialiased images. While film and digital cameras naturally produce motion blur, rendering pipelines need to explicitly simulate it. This process is known to be one of the most important burdens for every rendering pipeline. Motivated by this, we plan to run a series of psychophysical experiments targeted at identifying groups of motion-­¿blurred images that are perceptually equivalent. A possible outcome is the proposal of criteria that may lead to reductions of the rendering budgets

    Hemiepifisiodesis femoral distal mediante biomateriales reabsorbibles: Estudio experimental en el conejo

    Get PDF
    Se valoró experimentalmente un implante triangular compuesto de 3 tornillos metálicos unidos por un filamento de PDS II o Tendofil como método de epifisiodesis. Se utilizaron conejos esqueléticamente inmaduros, divididos en 4 Grupos, según el seguimiento postoperatorio (1,2,3 y 4 meses), subdivididos a su vez en 2 subgrupos según el filamento empleado. Se colocó el implante en la cara lateral de la epífisis femoral distal izquierda. La extremidad posterior derecha sirvió como control practicándose estudios radiológicos, histológicos e histomorfométrico. Las extremidades intervenidas presentaron una desviación en valgo significativa respecto a las control. El implante utilizado consiguió el frenado misario con ambos filamentos. Durante el primer mes, la eficacia del implante reabsorbible fue comparable al metálico. Posteriormente, el metálico resultó más eficaz. Los estudios histológicos e histomorfométrico mostraron un frenado asimétrico de la fisis intervenida. No hubo daños fisarios en relación con la degradación del implante reabsorbible. Nuestros resultados sugieron el diseño de implantes reabsorbibles en la cirugía del cartílago de crecimiento.A triangular implant compound by 3 metallic screws united by a filament (PDS II vs. Tendofil) as method of experimental epiphysiodesis was evaluated. They were used 32 immature rabbits, divided into 4 Groups acoording to the follow-up (1.2.3. and 4 months), and subdivided according to the employed filament. The implant was located at the lateral face of the distal left femoral epiphysis. The right extremity served as control. Radiographic, histologic and histomorphometric studies were performed. The operated legs presented a significant valgus deviation as compared to controls. The epiphysiodesis was achieved with both types of filaments. During the first month, the efficiency of the absorbable implant was comparable to the metallic. Thereafter, the metallic implant results more effective. Histologic and morphometric studies showed the hemiepiphysiodesis. No physeal damaged in relationship to the degradation of the absorbable implant was observed. Our results suggests the use of absorbable implant in growth plate surgery

    Population genetic structure of a sandstone specialist and a generalist heath species at two levels of sandstone patchiness across the Strait of Gibraltar

    Get PDF
    Many habitat specialist species are originally composed of small, discontinuous populations because their habitats are naturally fragmented or patchy. They may have suffered the long-term effects of natural patchiness. Mediterranean heathlands, a representative habitat in the Strait of Gibraltar region, are associated with nutrient-poor, acidic sandstone soils. Sandstone soil patches in the African side of the Strait (Tangier) are, in general, smaller and more scattered than in the European side (Algeciras). In this study, we analyze the effect of this sandstone patchiness on the population genetic diversity and structure of two Erica species from these Mediterranean heathlands that differ in their edaphic specificity, E. australis, sandstone specialist, and E. arborea, generalist. Average levels of within-population genetic diversity and gene flow between populations were significantly lower in Tangier (high sandstone patchiness) than in Algeciras (low patchiness) for the sandstone specialist, whereas no differences between both sides of the Strait were detected in the edaphic generalist. Since most endemic species in Mediterranean heathlands of the Strait of Gibraltar are sandstone specialists, these results highlight an increased vulnerability to loss of genetic diversity and local extinction of the heathland endemic flora in the Tangier side of the Strait of Gibraltar. © 2014 Gil-López et al.Project BREATHAL (CGL2011-28759/BOS) was financed by the Spanish Ministerio de Ciencia e Innovación.Peer Reviewe
    corecore