Tesis sobre el tema "Secteur AHI"
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Carotenuto-Garot, Aurélien. "Les Sisyphes de l’urgence sociale : les facteurs structurels et les raisons individuelles de la fabrique sociale du sans-abrisme". Electronic Thesis or Diss., Paris 8, 2023. http://www.theses.fr/2023PA080006.
This thesis in sociology aims to understand the range of structural factors and individual reasons behind the growth of the number of homeless people in France. At the end of this work, the various working of the social factory of homelessness will be updated and it will then become possible for us to understand why a social phenomenon, which has been a major preoccupation of our institutions for the last 40 years, has not been resolved. …/…I am able to provide a detailed answer to this question thanks to the new point of view I have had on the institutions responsible for taking charge of homelessness. Indeed, from 2015 to 2018, I was hired as a CIFRE doctoral researcher in the Service Intégré d'Accueil et d'Orientation (SIAO) in Val-d'Oise. Thus, I was integrated into the heart of the Reception, Accommodation and Insertion (AHI) sector of this department, which allowed me to have an inside look at the operation of these devices. I conducted an ethnographic of the work of AHI actors and the daily life of homeless people. Thereby, this thesis was an opportunity to describe the main stages and dynamics of the process of self-transformation experienced by homeless people. To this end, I used the concept of a career of homeless, whose modelling constitutes one of the contributions of this thesis. In this perspective, a follow-up of several years of 80 trajectories of homeless households was carried out
Aragão-Lagergren, Aida. "Working children in the informal sector in Managua". Uppsala, Sweden : Uppsala University, Dept. of Social and Economic Geography, 1997. http://catalog.hathitrust.org/api/volumes/oclc/37028942.html.
He, Jia Cong. "Analyzing risks in public-private partnership infrastructure projects using ISM and AHP methods". Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3950676.
Wele, Idrissou Pascal Djaigbe Pierre. "Le secteur privé national face au désengaagement de l'état cas des privatisations /". [Benin] : Université nationale du Bénin, 1991. http://catalog.hathitrust.org/api/volumes/oclc/37686067.html.
Dante, Elena <1995>. "Application of Fuzzy AHP and TOPSIS methods for a Foreign Direct Investment in the aluminium industry sector". Master's Degree Thesis, Università Ca' Foscari Venezia, 2019. http://hdl.handle.net/10579/15842.
RIBEIRO, BRUNO AGRÉLIO. "A PROPOSAL TO DISCLOSE THE PREFERENCES OF SPECIALIST COMMITTEES VIA AHP METHOD: AN APPLICATION TO THE ELECTRICAL SECTOR". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=32280@1.
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
Processos decisórios envolvendo um número diverso de critérios são comumente problemas complexos. Em geral, tais problemas procuram atender interesses conflitantes, logo, soluções únicas tendem a não contemplar as preferências de todos os agentes envolvidos no processo. Esse é o caso do problema de seleção de modelos de geração de cenários estocásticos de Energia Natural Afluente (ENA), os quais são insumo ao cálculo do despacho hidrotérmico de médio prazo no planejamento da operação do Sistema Elétrico Brasileiro (SEB). Neste trabalho é proposta uma extensão de um consagrado método de apoio à decisão multicritério, para que este se torne apto a revelar a preferência de comitês de especialistas, e a partir destas preferências reveladas derivar soluções mais adequadas para cada comitê. A aplicação dessa metodologia proposta no contexto do SEB é feita de forma a auxiliar diferentes segmentos do setor (academia, indústria e órgão regulador) a identificarem qual modelo de geração de cenários melhor se adequa às preferências destes segmentos. Para tal, os especialistas destes três setores foram agrupados e a partir da revelação das preferências de cada comitê foi proposta uma nova ordenação dos modelos geradores de cenários. As preferências reveladas para os comitês da academia e da indústria corroboraram as conjecturas sobre as predileções destes setores, fidelidade na representação dos momentos para a academia e capacidade de replicação da variância para a indústria, já a hipótese por predileção à replicação de déficit não pode ser verificada para o comitê do órgão regulador. Dentre as novas soluções obtidas, o modelo melhor classificado para a academia e indústria foi o PAR(p) Multiplicativo e para o órgão regulador o PAR(p) Boot-MC.
Decision-making processes involving a large number of criteria are often complex problems. In general, such problems seek to meet conflicting interests, so single solutions tend not to address the preferences of all agents involved in the process. This is the case of the problem of selection models for generation of stochastic scenarios of Natural Inflow Energy (NIE), which are input to the calculation of the medium term hydrothermal dispatch in the planning of the operation of the Brazilian Electric System (BES). This paper proposes an extension of a well-established multicriteria decision support method, so that it becomes able to reveal the preference of expert committees, and from these revealed preferences to derive more adequate solutions for each committee. The application of this methodology proposed in the context of BES is done to help different segments of the industry (academia, industry and regulator) to identify which model of scenario generation best suits the preferences of these segments. To this end, the specialists of these three sectors were grouped and from the revelation of the preferences of each committee a new ordering of the scenario generating models was proposed. The preferences revealed for the academy and industry committees corroborated the conjectures about the predilections of these sectors, fidelity in the representation of the moments for the academy and capacity of replication of the variance for the industry, however the hypothesis for predilection for the replication of deficit was not able to be verified to the regulatory committee. Among the new solutions obtained, the best classified model for the academy and industry was the PAR (p) Multiplicative and for the regulatory committee the PAR (p) Boot-MC.
Cerna, Risco Carlos Jesús y Valencia Nadia Valery Rojas. "Modelo de Gestión basado en MRP y AHP para la reducción del incumplimiento de pedidos en el sector vitivinícola". Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2021. http://hdl.handle.net/10757/655322.
The objective of this article is to address the case of an SME company in the wine sector, whose main problem is the non-fulfillment of customer orders. Among the reasons that cause this problem is the lack of available raw material due to inadequate planning when making the purchase orders to the supplier, which affects the company's inventory management. Also, other causes are the delay of the supplier in the delivery of the raw material and the delivery of the raw material with defects. This is due to an inappropriate choice of the optimal supplier and the fact that the company currently only has one supplier, which affects production and the fulfillment of customer orders within the established time frame. Based on this, studies were carried out where it is proposed to implement a management model based on MRP, oriented to supply management and AHP, oriented to supplier management; In order to reduce by 10% the percentage of non-compliance with respect to the requested orders and maintain a substantial improvement in the reliability of customers and suppliers towards the company.
Trabajo de investigación
Kazadi, Meta. "Le financement du secteur agricole zaïrois confirme-t-il le slogan "agriculture, priorite des priorites"? /". Kinshasa : Faculté des sciences économiques, Département de l'economie appliquée, Université de Kinshasa, 1990. http://catalog.hathitrust.org/api/volumes/oclc/22607080.html.
Al-Fawaz, Khaled. "Investigating enterprise resource planning adoption and implementation in service sector organisations". Thesis, Brunel University, 2012. http://bura.brunel.ac.uk/handle/2438/10078.
Parodi, de Camargo Violeta del Rosario. "Propuesta metodológica para la evaluación integral de proyectos en el sector energético". Doctoral thesis, Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/30063.
Parodi De Camargo, VDR. (2013). Propuesta metodológica para la evaluación integral de proyectos en el sector energético [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/30063
TESIS
Pitamber, Sunita C. S. "Women in the informal sector in Khartoum between poverty, entrepreneurship and empowerment /". Hamburg : Lit, 1999. http://catalog.hathitrust.org/api/volumes/oclc/43425152.html.
Pombeiro, Gonçalo Arez Mascarenhas Figueiredo. "Método de Análise de Investimentos em Sistemas de Informação e Tecnologias de Informação e Comunicação (SI/TIC) aplicado ao Sector Público". Master's thesis, Instituto Superior de Economia e Gestão, 2011. http://hdl.handle.net/10400.5/2922.
O objectivo deste estudo consiste em propor um método de análise ex-ante de investimentos na área de sistemas de informação e tecnologias de informação e comunicação (SI/TIC), com aplicação ao sector público, que represente uma melhoria face aos métodos actualmente existentes. A metodologia adoptada consiste em determinar as características identificadas na literatura como desejáveis para um método desta natureza, orientar o desenvolvimento do método no sentido dessas características e, uma vez desenvolvido, verificar em que medida o mesmo as conseguiu incorporar. Uma das características consideradas fundamentais é a da usabilidade pelos decisores: Para facilitar a utilização pelos decisores é desenvolvida uma aplicação que o implementa o método proposto. Outra característica tida como importante é a incorporação de conhecimentos já disponíveis, pelo que o método proposto é desenvolvido a partir de outros já existentes: a metodologia MAIS e a AHP expandida com cut off values (AHP+). O método resultante vai ao encontro de muitas características identificadas como desejáveis, sendo de destacar a capacidade de incorporar múltiplos critérios livremente escolhidos, numa avaliação que faculta um valor preciso facilitando a comparação precisa entre várias alternativas de investimento. As vertentes estratégica, financeira e de risco são abordadas de forma abrangente e sistemática. Posterior investigação orientada para aumentar a usabilidade do método fica facilitada pela disponibilização de uma aplicação que o implementa.
The goal of the present study is the proposal of an improved method for ex-ante investment assessment in information systems and information and communications technology to be mainly used in the public sector. The adopted methodology relies on literature review aimed at identification of key characteristics whose accommodation at the method to be developed is to be evaluated. One of the key characteristics is perceived usability since most available methods are not used while investment decisions are still made in a casuistic manner. In order to improve its usage the method is provided together with a software application. Since available knowledge embedding is an important characteristic the method is developed from existing ones, namely MAIS and an expanded version of AHP (AHP+). The resulting method meets most of the key characteristics notably its multi-criteria capacities as well as its precise evaluation feed-back allowing for a fine comparison between rival investment proposals. Strategic, financial and risk issues are also dealt with in a broad systematic way. Following investigation aiming to increase usability of the proposed method will be eased since the provided software application allows for real life tests which will give valuable feed-back.
Gryth, Alexander. "API:er i den offentliga sektorn : Öppenhet och datatillgänglighet enligt offentlighetsprincipen och PSI-direktivet". Thesis, Linnéuniversitetet, Institutionen för datavetenskap, fysik och matematik, DFM, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-13145.
Sweden has long had a good tradition of openness in the public sector, thanks to the principle ofpublic access. But due to increasing technological advances and demands on data availability theclassic transparency is no longer sufficient. There are already very interesting public data sets inSweden, but in most cases they are either stored in formats that are difficult to read digitally or it'stoo expensive to use.This thesis examines how an API can be developed, used and integrated with other API:s to open upthe above mentioned data in a better way and make it more accessible to potential users.Furthermore, the real benefits of the PSI directive are examined, and how they along with theprinciple of public access can contribute to the new openness. In connection to this thesis aprototype has also been developed to provide examples of how to combine different API:s for thevisualization of geographic data, and how an API can be built on top of the visualization to makethis data more available.
Endriekutė, Laura. "Atsinaujinančių energijos išteklių politikos įgyvendinimas: Lietuvos ir Švedijos biomasės panaudojimo atvejo analizė". Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140128_134054-95608.
Master's thesis analyzes how the policy of Renewable energy recources is implementing in Lithuania, which is compared with example of Sweden‘s Renewable energy policy framework, emphasizing the use of biomass resources for energy. The paper aims to analyze the Renewable energy resources policies in Lithuania and Sweden with special Focus on biomass use of energy aspect. This is implemented: with defining the key concepts related to the theme; analyzed Lithuanian and Swedish energy sectors; selected intstruments of public policy and analyzed their use for the countries under discussion; by comparing the essential nuances of the renewable energy policy through biomass prism of Lithuania and Sweden, and providing examples of good practice which are useful for the future development of more effective energy policy; analysed European Union, sustainable development, regional policy and strategių planning impact for policy implementation of renewable energy resources. Also, there is a systematic summary of the topic analysis of the Renewable policy implementation in Lithuania and Sweden and the proposed recommendations.
Lourenço-Lindell, Ilda. "Walking the tight rope informal livelihoods and social networks in a West African city /". Stockholm : Almqvist & Wiksell International, 2002. http://catalog.hathitrust.org/api/volumes/oclc/49995507.html.
Wang, Chen-Ying y 王貞穎. "Developing Marketing Strategies Allocation Model in Taiwan’s Bio-Cosmetics Sector by Using the Fuzzy AHP". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/wf2e9f.
元培科學技術學院
經營管理研究所
94
Many female consumers regard cosmetics as a daily necessity, as reflected by the wide array of cosmetic brands in the intensely competitive market sector. Given the enormous consumer demand and stringent competition, manufacturers must more thoroughly understand the consumer purchasing behavior of this market niche. Cosmetic manufacturers are concerned not only with marketing practices, but also with potential marketing segmentation practices, necessitating the adoption of the multi-criteria decision making (MCDM) method. Therefore, this work presents a Fuzzy Analytic Hierarchy Process (Fuzzy AHP) model that adopts several important criteria that cosmetic manufacturers select objectively to determine the most appropriate marketing strategy. An optimal marketing resource model is also constructed to comply with the various demands of cosmetic manufacturers. Using a modified Delphi technique, a questionnaire is designed based on selection criteria identified from pertinent literature and interviews with experts and then sent to experts. Next, major selection criteria are analyzed and ranked by using the Fuzzy AHP. Analysis results indicate that the criteria weights of marketing for experts can be evaluated in Taiwan’s bio-cosmetics sector and effectively modeled for marketing segmentation. The proposed model enables local cosmetic manufacturers to effectively execute marketing segmentation strategies.
Almashaqbeh, Sahar, J. Eduardo Munive-Hernandez y M. Khurshid Khan. "Developing a Risk Assessment Model for non-Technical Risk in Energy Sector". 2018. http://hdl.handle.net/10454/17050.
Risk Management is one of the most relevant approaches and systematic applications of strategies, procedures and practices management that have been introduced in literatures for identifying and analysing risks which exist through the whole life of a product ,a process or services. Therefore, the aim of this paper is to propose a risk assessment model that will be implemented to the energy sector, particularly to power plants. This model combines the Analytic Hierarchy Process (AHP) technique with a new enhanced Balance Score Card (BSC). AHP is constructed to determine the weights and the priorities for all perspectives and risk indicators that involved in the BSC. The novelty in this paper is not only in using the BSC for risk assessment, but also, in developing a new BSC with six perspectives, which are sustainability perspective; economic; learning and growth; internal and operational business process; supply chain and customer/demand perspective. Another three contributions of this paper are firstly, including the sustainability dimension in BSC, and covering nine risk categories, which comprise 84 risk indicators that have been distributed across the six risk BSC perspectives. Secondly, assessing the non-technical risks in power plants and finally, this research will concentrate on the strategic level instead of the operational level where the majority of researches focus on latter but the former is far less researched. The created model will provide an effective measurement for the risks particularly, in the power plants sector. The results of this study demonstrate that the supply chain risks perspective is the keystone for the decision making process. Furthermore, these risk indicators with the new structure of BSC with six perspectives, help in achieving the organisation mission and vision in addition to affording a robust risk assessment model. The inputs of this model are composed from a previous stage using a modified Failure Mode and Effect Analysis (FMEA) (which has been used the Exponential Weighted Geometric Mean (EWGM)) to understand and analyse all risks, after which, the results of the developed FMEA which are the Risk Priority Numbers (RPN’s), have been used to build the AHP-BSC risk model. These risks are collected with difficulty from various literatures. This study will be validated in the next stage in power plants in the Middle East.
Hashemite University, Jordan
Taghdiri, Ali Reza. "The underground economy in the United States annual estimates, 1977-83 /". 1985. http://catalog.hathitrust.org/api/volumes/oclc/33112960.html.
Castro, Luiz Carlos de. "The southern oscillation in the tropical Atlantic sector". 1986. http://catalog.hathitrust.org/api/volumes/oclc/14881571.html.
Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 70-79).
Haase, Dwight. "Gender, microcredit, and the informal sector in Nicaragua". 2006. http://catalog.hathitrust.org/api/volumes/oclc/84843882.html.
Selinsky, Renee. "Measuring interregional competition in the U.S. dairy sector". 1992. http://catalog.hathitrust.org/api/volumes/oclc/32442403.html.
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Ishmael, Len. "Informal sector factor mobilization the process by which poor people shelter themselves and implications for policy focus on the Caribbean, St. Vincent and Dominica /". 1988. http://catalog.hathitrust.org/api/volumes/oclc/25206271.html.
Howarth, Richard B. "Energy use trends in the manufacturing sector 1954-81 /". 1987. http://catalog.hathitrust.org/api/volumes/oclc/15869296.html.
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Ofstead, Cynthia. "Hidden workers Mexican women in the urban informal sector /". 1989. http://catalog.hathitrust.org/api/volumes/oclc/20939808.html.
Cooke, Benjamin. "Petrology and geochemistry of Sangeang Api and recent volcanism in the Sumbawa-Flores sector of the Sunda Arc: the response of along-arc geochemistry to subduction processes". Thesis, 2017. http://hdl.handle.net/2440/115477.
Thesis (Ph.D.) (Research by Publication) -- University of Adelaide, School of Physical Sciences, 2018
Lee, Young Gyun. "Analysis of public sector growth in South Korea, 1953-1991". 1993. http://catalog.hathitrust.org/api/volumes/oclc/33416420.html.
Allen, Michele Lee. "Gender and service sector migration the case of Filipino nurses /". 1991. http://catalog.hathitrust.org/api/volumes/oclc/25407808.html.
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Krohn, Gregory Alan. "Interest rate volatility and the size of the financial sector". 1985. http://catalog.hathitrust.org/api/volumes/oclc/12109020.html.
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Strohl, Derek A. "An interdisciplinary approach to pollution in the Mexican manufacturing sector". 1997. http://catalog.hathitrust.org/api/volumes/oclc/38529400.html.
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Tomberlin, David A. "Timber supply, trade, and environment in the Pacific Rim Forest sector". 1999. http://catalog.hathitrust.org/api/volumes/oclc/45141214.html.
Coffey, Sergia. "Tax evasion and the development of a financial sector in LDC's". 1995. http://catalog.hathitrust.org/api/volumes/oclc/36384812.html.
Doms, Mark E. "Essays on capital equipment and energy technology in the manufacturing sector". 1992. http://catalog.hathitrust.org/api/volumes/oclc/28910757.html.
McGinn, Barbara. "Service sector employment and income inequality in nonmetropolitan counties, 1950-1980". 1988. http://catalog.hathitrust.org/api/volumes/oclc/19095684.html.
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Neuendorf, David L. "The dynamics of private sector employment change in Wisconsin 1978-1986 /". 1988. http://catalog.hathitrust.org/api/volumes/oclc/18176937.html.
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Salcedo-Baca, Salomon. "Economic analysis of cheap food policies the wheat sector in Mexico /". 1985. http://catalog.hathitrust.org/api/volumes/oclc/12725543.html.
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Cheikhetov, Serguei. "Private enterpreneurship in the Soviet Union 1920s-1980s /". Diss., 2002. http://catalog.hathitrust.org/api/volumes/oclc/52385476.html.
DUŠEK, Jan. "Využití metod vícekriteriálního hodnocení variant ve veřejném sektoru". Master's thesis, 2008. http://www.nusl.cz/ntk/nusl-48984.
Gandhi, Rajesh. "Classical and non-perturbative aspects of the gauge sector in superstring theory". 1987. http://catalog.hathitrust.org/api/volumes/oclc/17314691.html.
Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 49-51).
Hernandez, Pablo. "Environmental consequences of foreign sector expansion Mexico's maquiladora performance throughout the 1990s /". 2003. http://catalog.hathitrust.org/api/volumes/oclc/60249797.html.
Willis, Eliza Jane. "The state as banker the expansion of the public sector in Brazil /". 1986. http://catalog.hathitrust.org/api/volumes/oclc/18493648.html.
Barnes, Kenneth A. "The impact of social objectives in electric sector planning case study: Nepal /". 1997. http://catalog.hathitrust.org/api/volumes/oclc/37766534.html.
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Tannenbaum, Roberta. "Energy conservation decision making in the commercial sector a Wisconsin case study /". 1988. http://catalog.hathitrust.org/api/volumes/oclc/17596738.html.
Wibowo, Sasmito H. "Growth convergence in Southeast Asia and underground economy in Indonesia". 2001. http://catalog.hathitrust.org/api/volumes/oclc/50260267.html.
Taveira, Alvaro D. "A successful quality improvement team project in the public sector a retrospective investigation /". 1996. http://catalog.hathitrust.org/api/volumes/oclc/36852592.html.
Dmytraczenko, Tania. "Structural adjustment policy and productivity growth in the Brazilian state-owned telecommunications sector". 1994. http://catalog.hathitrust.org/api/volumes/oclc/34787509.html.
Kim, Junki. "State-owned enterprise sector reform and privatization theory and some evidence from Korea /". 1996. http://catalog.hathitrust.org/api/volumes/oclc/36846929.html.
Norberg-Bohm, Vicki. "Technological change for sustainable development lessons from the electric power sector in Mexico /". 1996. http://catalog.hathitrust.org/api/volumes/oclc/38762787.html.
Zhu, Shushuai. "Effects of accelerated tariff liberalization on the global forest products sector, 1997-2010". 1999. http://catalog.hathitrust.org/api/volumes/oclc/46966719.html.
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Reis, Luís Miguel Conceição Silva dos. "Avaliação do potencial endocársico do sector setentrional do Planalto de Santo António (Maciço Calcário Estremenho, Portugal Central)". Master's thesis, 2021. http://hdl.handle.net/10316/97004.
A avaliação do potencial de carsificação, sobretudo no que concerne a componente subterrânea, num maciço lítico carbonatado, é uma tarefa sempre complexa e de difícil execução devido ao elevado número de fatores condicionantes envolvidos, aos seus diferentes graus de influência e ao facto de estes estarem sempre (ou quase sempre) interrelacionados, como, por exemplo, a estrutura geológica e a permeabilidade. É principal propósito deste trabalho a produção de um modelo cartográfico que permita representar espacialmente a probabilidade da existência de formas cársicas em profundidade (e.g., grutas), ou seja, o “potencial endocársico”.Incidindo sobre o sector setentrional do Planalto de Santo António, no Maciço Calcário Estremenho (Portugal Central), foram considerados para a modelação espacial do potencial endocársico os seguintes fatores condicionantes: litologia (a que se juntam as caraterísticas faciológicas e estratonómicas - unidades litostratigráficas), estrutura geológica (onde se inclui a fraturação e a geometria das camadas rochosas), topografia e ocupação do solo. Antes de mais, tentou-se perceber a influência de cada um destes fatores para a carsificação subterrânea e com essa informação estabelecer uma hierarquia da sua importância relativa.Com base nos resultados obtidos, e por ordem de importância, verificamos que na área de estudo são fatores potenciadores da carsificação subterrânea (à escala local) as seguintes caraterísticas geológicas, geomorfológicas e edáficas: (i) rochas carbonatadas relativamente mais puras e com textura mais fina que, geralmente, pertencem as sucessões estratigráficas com estratos mais espessos e pouco inclinados; (ii) existência de sucessões carbonatadas mais heterogéneas onde, juntamente com os estratos mais solúveis, interestratificam outros conjuntos líticos mais insolúveis; (iii) áreas com maior densidade de fraturação; (iv) áreas com maior diferença altimétrica em relação aos locais de recarga (tanto difusa como concentrada) e de descarga (exsurgências) do sistema – i.e., as áreas com maior energia do relevo; (v) por último, áreas com uma cobertura detrítica, de solo e vegetação que originam um atraso na infiltração e na percolação subsuperficial, ao mesmo tempo que tornam as águas meteóricas mais agressivas.A avaliação dos fatores condicionantes da carsificação subterrânea baseou-se na análise multicritério, sendo esta materializada pelo Processo de Análise Hierárquica (AHP - Analytic Hierarchy Process), onde a ponderação atribuída aos fatores destacou claramente a importância da litologia (juntamente com as caraterísticas das fácies) e da fraturação. O modelo cartográfico do potencial de carsificação subterrânea foi construído em SIG (Sistemas de Informação Geográfica) e a sua avaliação/verificação realizada através da correlação com a localização das entradas das cavidades naturais subterrâneas conhecidas. Os resultados obtidos parecem bastante promissores, na medida em que as entradas da maioria das cavidades conhecidas no sector setentrional do Planalto de Santo António se localizam nas áreas classificadas com elevado a muito elevado potencial endocársico.
The evaluation of the karstification potential, especially regarding the underground component, in a carbonate massif, is always a complex and difficult task to carry out, due to the high number of conditioning factors involved, their different degrees of influence and the fact that these are always (or almost always) interrelated, such as geological structure and permeability. The main purpose of this work is to produce a cartographic model that allows to spatially represent the probability of the existence of subterranean karst forms (e.g., caves), which represents the so-called “endokarst potential”.Focusing on the northern sector of the Santo António plateau, in the Estremadura Limestone Massif (Centre of Portugal), the following conditioning factors were considered for the spatial modeling of endokarst potential: lithology (with the faciological and stratonomic characteristics - lithostratigraphic units), geological structure (which includes fractures and geometry of carbonate rock layers), topography and soil cover. First, we tried to understand the influence of each of these factors on underground karstification and, with that information, establish a hierarchy of their relative importance.Based on the results obtained, and in order of importance, we found that in the study area the following geological, geomorphological and edaphic characteristics are potentiating factors for underground karstification (at local scale): (i) relative pure carbonate rocks with more thin texture, which generally belong to stratigraphic successions with thicker and less inclined strata; (ii) existence of more heterogeneous carbonate successions where, together with the more soluble strata, they interstratify other more insoluble lithic bodies; (iii) the areas with the highest fracture density; (iv) the areas with the greatest altimetric difference in relation to the recharge (both diffuse and concentrated) and discharge (karst springs) sites of the system - i.e., the areas with higher relief energy; (v) the existence of a detrital, soil and vegetation cover that cause a delay in infiltration and subsurface percolation, while making meteoric waters more aggressive.The evaluation of the conditioning factors of underground karstification was based on multi-criteria analysis, which was materialized by the Analytic Hierarchy Process (AHP), where the weighting attributed to the factors clearly highlighted the importance of lithology (along with the facies characteristics) and fractures. The cartographic model of the underground karstification potential was built in a GIS (Geographic Information Systems) and its validation was carried out through the correlation with the location of the known caves entrances. The results obtained seem quite promising, as the entrances of the most known caves in the northern sector of the Santo António plateau are in areas classified as having high to very high endokarst potential.
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