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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Untersuchungen zur Verbesserung der Resultatqualität bei Suchverfahren über Web-Archive

Hofmann, Frank 10 February 2003 (has links)
Eine Übersicht über die Verfahren der Erweiterten Suche (TF,IDF, Stemming, Indexing, Klang von Wörtern) sowie Textkorrektur, dazu deskriptorenbasierte Beschreibung von Dokumenten und Abstracts. Es erfolgt eine Evaluierung dieser Verfahren anhand von ausgewählten XML-Metadaten aus dem MONARCH. Den Abschluß bildet eine Analyse zum Ist-Zustand des MONARCH, bezogen auf Qualität der verwendeten Metadaten und deren Nutzbarkeit für die Erweiterte Suche.
42

"An investigation of the oral health of a selected group of preschool children in the Western Cape"

Yasin-Harnekar, S. January 1987 (has links)
Magister Chirurgiae Dentium (MChD) / The dental clinic of the University of the Western Cape provides oral health care for many preschool children. The clinical observation was that these children presented with rampant dental caries. A recent report compi1ed by an international Joint Working Group of the Internationale Dental Federation and the World Health Organisation identified the changes in oral health in children and factors associated with these changes. South Africa presents a unique opportuni ty to study the oral health status of different ethnic and socio-economic groups. A review of the relevant literature indicated that there was a lack of published data, especially on the oral health status of preschool children. A study was designed to investigate the oral health status of a selected group of preschool children ages 2-6 years in the Western Cape. The examinations were conducted at twelve different créches by two calibrated examiners. The examinees' weight and height were also measured. The data was recorded on a revised World Health Organization Basic Oral Health Assessment form. A total of 547 children were examined with an almost equal distribution of males and females. Only 18% of the sample had a compl ete sound primary dentition, dmft = O. The mean dmft was 5.37 which ranged from 2.73 for the 2 year age group to 7.01 for the 5 year age group. The mean dt of 4.09 made up 76% of the dmft, the mean mt of 1.22 made up 23% and the ft was negligible. Seventy-eight percent of the sample had decayed teeth present and 28% had missing teeth recorded. The treatment chosen by or for these children appeared to be extractions. Observations of extensively decayed teeth and the high prevalence of dento-alveolar abscesses suggested that this treatment was of an emergency nature. There was much unmet treatment as only 22% of subjects were free of decay and those with decayed teeth present had an average of 5. The dmft distribution showed 48% had a dmft.)5. There was a statistically significant linear association between the dmf and age for all the tooth types except the cani nes. There was no significant difference in caries prevalence between males and females. The phenomenon of bilateral symmetrical occurrence of dental caries in the primary dentition was demonstrated in the present study. The maxillary central incisors were the most frequently affected teeth (55%), followed by the mandibular second molars (47%) and maxillary second molars (42%). This is contrary to the findings in European communities where the primary second molars are the most susceptible tooth types. The present study found the fifth year of 1ife to be the critical one for the primary dentition. It was at this age that the greatest increment in dmft was observed, the greatest decrease in the number of caries-free subjects, more than a twofold increase in rampant caries, and a twofold increase in the number of subjects with dento-a1veo1ar abscesses. Few hard tissue anomalies were recorded. Localized enamel hypoplasia was quite common especially of the upper incisors and second molars. Most children claimed their teeth were brushed at least once a day. But soft deposits were present in almost all age groups in all the segments. Sixty percent of the sample had the sole responsibility of brushing their own teeth with no assistance from their parents. Parental assistance with toothbrushing was limited to the younger age group. In the present study soft deposits and gingivitis were recorded mostly on the buccal of the upper posterior segments and on the lingual of the lower posterior segments. The anterior segmentshad less plaque than the posterior segments. Thi s may be due to children finding it easier to brush anteriorly than posteriorly when they do brush. Also, the other areas are less accessible and require greater manipulative skill. There was a weak correlation between the total soft deposits and total gingivits. Although 60% of the sample had six segments of soft deposits present, only 4% had )six segments of gingivitis present. However, it was found that the higher the number of segments of soft deposits present, the greater the tendency for the presence of gingivitis. The association between dmft and soft deposits was not significant but between dmft and gingivitis was significant. This may be more preci se as these two are both cumulative measures. Soft tissue lesions were generally uncommon in this age group. The children in this community were generally lighter in weight and shorter in height compared to the NCHS (1979) percentiles. Recommendations regarding ways of redressing the obviously inadequate general and oral health of this sample of children were made.
43

A Method for Recommending Computer-Security Training for Software Developers

Nadeem, Muhammad 12 August 2016 (has links)
Vulnerable code may cause security breaches in software systems resulting in financial and reputation losses for the organizations in addition to loss of their customers’ confidential data. Delivering proper software security training to software developers is key to prevent such breaches. Conventional training methods do not take the code written by the developers over time into account, which makes these training sessions less effective. We propose a method for recommending computer–security training to help identify focused and narrow areas in which developers need training. The proposed method leverages the power of static analysis techniques, by using the flagged vulnerabilities in the source code as basis, to suggest the most appropriate training topics to different software developers. Moreover, it utilizes public vulnerability repositories as its knowledgebase to suggest community accepted solutions to different security problems. Such mitigation strategies are platform independent, giving further strength to the utility of the system. This research discussed the proposed architecture of the recommender system, case studies to validate the system architecture, tailored algorithms to improve the performance of the system, and human subject evaluation conducted to determine the usefulness of the system. Our evaluation suggests that the proposed system successfully retrieves relevant training articles from the public vulnerability repository. The human subjects found these articles to be suitable for training. The human subjects also found the proposed recommender system as effective as a commercial tool.
44

Recommending Answers to Math Questions Using KL-Divergence and the Approximate XML Tree Matching Approach

Gao, Siqi 30 May 2023 (has links) (PDF)
Mathematics is the science and study of quality, structure, space, and change. It seeks out patterns, formulates new conjectures, and establishes the truth by rigorous deduction from appropriately chosen axioms and definitions. The study of mathematics makes a person better at solving problems. It gives someone skills that (s)he can use across other subjects and apply in many different job roles. In the modern world, builders use mathematics every day to do their work, since construction workers add, subtract, divide, multiply, and work with fractions. It is obvious that mathematics is a major contributor to many areas of study. For this reason, retrieving, ranking, and recommending Math answers, which is an application of Math information retrieval (IR), deserves attention and recognition, since a reliable recommender system helps users find the relevant answers to Math questions and benefits all Math learners whenever they need help solve a Math problem, regardless of the time and place. Such a recommender system can enhance the learning experience and enrich the knowledge in Math of its users. We have developed MaRec, a recommender system that retrieves and ranks Math answers based on their textual content and embedded formulas in answering a Math question. MaRec (i) applies KL-divergence to rank the textual content of a potential answer A with respect to the textual content of a Math question Q, and (ii) together with the representation of the Math formulas in Q and A as XML trees determines their subtree matching scores in ranking A as an answer to Q. The design of MaRec is simple, since it does not require the training and test process mandated by machine learning-based Math IR systems, which is tedious to set up and time consuming to train the models. Conducted empirical studies show that MaRec significantly outperforms (i) three existing state-of-the-art MathIR systems based on an offline evaluation, and (ii) a top-of-the-line machine learning system based on an online performance analysis.
45

Sumarizace českých textů z více zdrojů / Multi-source Text Summarization for Czech

Brus, Tomáš January 2012 (has links)
This work focuses on the summarization task for a set of articles on the same topic. It discusses several possible ways of summarizations and ways to assess their final quality. The implementation of the described algorithms and their application to selected texts constitutes a part of this work. The input texts come from several Czech news servers and they are represented as deep syntactic trees (the so called tectogrammatical layer).
46

Avaliação do perigo de inundações bruscas por meio de modelagem hidrogeomorfológica : estudo de caso, Bacia do Arroio Forromeco-RS

Zambrano, Fernando Campo January 2017 (has links)
O aumento da ocorrência de desastres hidrológicos relacionados a inundações bruscas tem recebido maior atenção dos diversos órgãos em suas diferentes escalas, com o objetivo de reduzir ao máximo suas causas. Justamente por isso, as medidas não estruturais são medidas de extrema importância na prevenção de tais desastres. Uma dessas medidas deve ser o mapeamento de áreas de perigo de inundações. Portanto, o objetivo do presente trabalho foi propor e avaliar o perigo de inundações bruscas por meio de modelagem hidrogeomorfológica na bacia do arroio Forromeco-RS. Para isso, foi utilizado o modelo CAESAR-LISFLOOD, para representar os processos hidrológicos em escala de bacia e canal. Em escala de bacia foram gerados hidrogramas a partir da criação de chuvas de projeto para diferentes tempos de retorno (TR), considerando como base o maior evento registrado nessa bacia associado a um TR de 22 anos. Esses hidrogramas foram utilizados nas simulações em escala de canal para gerar os diferentes mapas de inundação em termos de profundidade e velocidade do fluxo da água. Para analisar as áreas de perigo de inundação, foram determinados os índices de perigo (IP) associados aos diferentes TR, a partir da profundidade e a velocidade d’água. Através das análises do resultado de IP foi criado o mapeamento final de perigo associado a três tempos de retorno (5, 22, e 100 anos). Além disso, estabeleceu-se três zonas para identificar os níveis de perigo, considerando o cenário mais crítico dos três mapas. Os resultados mostraram que a maior área inundada se encontra em alto perigo, ocupando 77% da área total, o que significa que as pessoas que moram nessa região estão em perigo tanto em casa, como fora delas. Ao mesmo tempo as construções estão em alta possiblidade de serem danificadas. / The increase in the occurrence of hydrological disasters related to flash floods has begun to be more important for several organs at different scales in order to reduce their magnitude and frequency as much as possible. Precisely because of it, non-structural measures are extremely important measures for preventing such disasters. One of these important measures might be the mapping of flood hazard areas. Therefore, the objective of the present work was to propose and evaluate the flash flood hazard by means of hydrogeomorphic modeling of the Forromeco river basin, Rio Grande do Sul state. Thus, the CAESAR-LISFLOOD model was used to represent the hydrological processes at basin and channel scale. At basin scale hydrographs were generated from the creation of hyetographs for different return periods (RP), considering the largest event recorded in this basin. These hydrographs were used in the channel scale simulations to generate the different flood maps in terms of depth and velocity of water flow. In order to analyze the flood hazard areas, the hazard indexes (HI) associated with the different RPs were determined from the depth and water velocity. Through the IP analysis, the final hazard mapping associated with three RPs (5, 22, and 100 years) was created. In addition, three zones were established to identify the hazard levels, considering the most critical scenario of the three maps. The results showed that the largest flood area is in high degree hazard, occupying 77% of the total area. It indicates that people are in danger both inside and outside houses. At the same time buildings are in high possibility of being damaged.
47

Construction of the Intensity-Duration-Frequency (IDF) Curves under Climate Change

2014 December 1900 (has links)
Intensity-Duration-Frequency (IDF) curves are among the standard design tools for various engineering applications, such as storm water management systems. The current practice is to use IDF curves based on historical extreme precipitation quantiles. A warming climate, however, might change the extreme precipitation quantiles represented by the IDF curves, emphasizing the need for updating the IDF curves used for the design of urban storm water management systems in different parts of the world, including Canada. This study attempts to construct the future IDF curves for Saskatoon, Canada, under possible climate change scenarios. For this purpose, LARS-WG, a stochastic weather generator, is used to spatially downscale the daily precipitation projected by Global Climate Models (GCMs) from coarse grid resolution to the local point scale. The stochastically downscaled daily precipitation realizations were further disaggregated into ensemble hourly and sub-hourly (as fine as 5-minute) precipitation series, using a disaggregation scheme developed using the K-nearest neighbor (K-NN) technique. This two-stage modeling framework (downscaling to daily, then disaggregating to finer resolutions) is applied to construct the future IDF curves in the city of Saskatoon. The sensitivity of the K-NN disaggregation model to the number of nearest neighbors (i.e. window size) is evaluated during the baseline period (1961-1990). The optimal window size is assigned based on the performance in reproducing the historical IDF curves by the K-NN disaggregation models. Two optimal window sizes are selected for the K-NN hourly and sub-hourly disaggregation models that would be appropriate for the hydrological system of Saskatoon. By using the simulated hourly and sub-hourly precipitation series and the Generalized Extreme Value (GEV) distribution, future changes in the IDF curves and associated uncertainties are quantified using a large ensemble of projections obtained for the Canadian and British GCMs (CanESM2 and HadGEM2-ES) based on three Representative Concentration Pathways; RCP2.6, RCP4.5, and RCP8.5 available from CMIP5 – the most recent product of the Intergovernmental Panel on Climate Change (IPCC). The constructed IDF curves are then compared with the ones constructed using another method based on a genetic programming technique. The results show that the sign and the magnitude of future variations in extreme precipitation quantiles are sensitive to the selection of GCMs and/or RCPs, and the variations seem to become intensified towards the end of the 21st century. Generally, the relative change in precipitation intensities with respect to the historical intensities for CMIP5 climate models (e.g., CanESM2: RCP4.5) is less than those for CMIP3 climate models (e.g., CGCM3.1: B1), which may be due to the inclusion of climate policies (i.e., adaptation and mitigation) in CMIP5 climate models. The two-stage downscaling-disaggregation method enables quantification of uncertainty due to natural internal variability of precipitation, various GCMs and RCPs, and downscaling methods. In general, uncertainty in the projections of future extreme precipitation quantiles increases for short durations and for long return periods. The two-stage method adopted in this study and the GP method reconstruct the historical IDF curves quite successfully during the baseline period (1961-1990); this suggests that these methods can be applied to efficiently construct IDF curves at the local scale under future climate scenarios. The most notable precipitation intensification in Saskatoon is projected to occur with shorter storm duration, up to one hour, and longer return periods of more than 25 years.
48

Avaliação do perigo de inundações bruscas por meio de modelagem hidrogeomorfológica : estudo de caso, Bacia do Arroio Forromeco-RS

Zambrano, Fernando Campo January 2017 (has links)
O aumento da ocorrência de desastres hidrológicos relacionados a inundações bruscas tem recebido maior atenção dos diversos órgãos em suas diferentes escalas, com o objetivo de reduzir ao máximo suas causas. Justamente por isso, as medidas não estruturais são medidas de extrema importância na prevenção de tais desastres. Uma dessas medidas deve ser o mapeamento de áreas de perigo de inundações. Portanto, o objetivo do presente trabalho foi propor e avaliar o perigo de inundações bruscas por meio de modelagem hidrogeomorfológica na bacia do arroio Forromeco-RS. Para isso, foi utilizado o modelo CAESAR-LISFLOOD, para representar os processos hidrológicos em escala de bacia e canal. Em escala de bacia foram gerados hidrogramas a partir da criação de chuvas de projeto para diferentes tempos de retorno (TR), considerando como base o maior evento registrado nessa bacia associado a um TR de 22 anos. Esses hidrogramas foram utilizados nas simulações em escala de canal para gerar os diferentes mapas de inundação em termos de profundidade e velocidade do fluxo da água. Para analisar as áreas de perigo de inundação, foram determinados os índices de perigo (IP) associados aos diferentes TR, a partir da profundidade e a velocidade d’água. Através das análises do resultado de IP foi criado o mapeamento final de perigo associado a três tempos de retorno (5, 22, e 100 anos). Além disso, estabeleceu-se três zonas para identificar os níveis de perigo, considerando o cenário mais crítico dos três mapas. Os resultados mostraram que a maior área inundada se encontra em alto perigo, ocupando 77% da área total, o que significa que as pessoas que moram nessa região estão em perigo tanto em casa, como fora delas. Ao mesmo tempo as construções estão em alta possiblidade de serem danificadas. / The increase in the occurrence of hydrological disasters related to flash floods has begun to be more important for several organs at different scales in order to reduce their magnitude and frequency as much as possible. Precisely because of it, non-structural measures are extremely important measures for preventing such disasters. One of these important measures might be the mapping of flood hazard areas. Therefore, the objective of the present work was to propose and evaluate the flash flood hazard by means of hydrogeomorphic modeling of the Forromeco river basin, Rio Grande do Sul state. Thus, the CAESAR-LISFLOOD model was used to represent the hydrological processes at basin and channel scale. At basin scale hydrographs were generated from the creation of hyetographs for different return periods (RP), considering the largest event recorded in this basin. These hydrographs were used in the channel scale simulations to generate the different flood maps in terms of depth and velocity of water flow. In order to analyze the flood hazard areas, the hazard indexes (HI) associated with the different RPs were determined from the depth and water velocity. Through the IP analysis, the final hazard mapping associated with three RPs (5, 22, and 100 years) was created. In addition, three zones were established to identify the hazard levels, considering the most critical scenario of the three maps. The results showed that the largest flood area is in high degree hazard, occupying 77% of the total area. It indicates that people are in danger both inside and outside houses. At the same time buildings are in high possibility of being damaged.
49

Pobreza e desigualdades socioterritoriais: uma problematiza??o acerca da perspectiva territorial nas politicas p?blicas sociais no munic?pio de Pau dos Ferros/RN

Lima, Francisca Elizonete de Souza 26 March 2014 (has links)
Made available in DSpace on 2015-03-13T17:10:57Z (GMT). No. of bitstreams: 1 FranciscaESL_DISSERT.pdf: 6055112 bytes, checksum: a1ec1ab159603a31ddf5cfc8bde893a1 (MD5) Previous issue date: 2014-03-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / El presente trabajo se constituye en un estudio sobre la pobreza y las desigualdades socio territoriales en el Brasil, problematizando la perspectiva territorial de las pol?ticas p?blicas sociales observando la distribuci?n espacial del ?ndice de Desarrollo de las familias (IDF) en el municipio de Pau dos Ferros/RN, as? como las principales pol?ticas sociales, a ejemplo del Programa Bolsa Familia. En este sentido, el objetivo principal de esa disertaci?n se di? en la tentativa de comprender la importancia de la lectura previa del territorio para la reflexi?n sobre la pobreza en su aspecto multidimensional y para la territorializaci?n de las pol?ticas P?blicas sociales construidas en el intento de minimizar la problem?tica de la desigualdad social, observando la distribuci?n espacial do IDF en el municipio de Pau dos Ferros/RN. A partir del objetivo general trazado, hicimos una revisi?n te?rica sobre los temas, pobreza, desigualdades sociales y pol?ticas p?blicas, en el primero caso atentando para el aspecto multidimensional de esta, abogando la importancia de analizarnos la pobreza no apenas por el nivel de rienda, pero considerando otras dimensiones que corroboran para la constituci?n del ser pobre, como habitaciones precarias, falta de saneamiento b?sico e infraestructura, el no acceso a la salud, la educaci?n y los otros servicios que posibilitan el individuo vivir con el mejor dignidad. Comprendiendo la importancia del conocimiento previo del territorio para que ocurra las debidas reflexiones e intervenciones en la realidad territorial buscamos reflexionar acerca de ese concepto en sus nexos con la construcci?n e implementaci?n de las pol?ticas p?blicas sociales teniendo la Pol?tica Nacional de Asistencia Social (PNAS) como pol?tica esencial y tambi?n el el Programa Bolsa Familia (PBF), una vez que buscamos compreender su importancia a partir de la visi?n del sujeto, o sea las beneficiadas del PBF en el Municipio de Pau dos Ferros. Para tanto, hicimos entrevistas orales con las beneficiadas del PBF que fueron elegidas aislada a partir de los equipos del CRAS, adem?s de la aplicaci?n de cuestionarios semiesctructurados y abiertos con gestores y asistentes sociales del muninicipio.Buscamos adem?s trabajar con algunos datos del Cad?nico para el munic?pio en estudio proponiendo analisar las condiciones sociales y econ?micas de las fam?lias cadastradas. Algunos resultados fueron posibles, a saber, es necesario interpretarse la pobreza a partir de varias dimensiones para no tener el riesgo de quedarnos solamente en la perspectiva financiera, o sea de la rienda, que mismo sirva para lo emergencial no es suficiente para transformar las condiciones de vida de las fam?lias; PNAS puede ser considerada como un avanzo de la pol?tica social en el Brasil una vez que posuye importancia fundamental en la familia. Sin embargo, es preciso avanzar en la interpretaci?n del territorio que en la pol?tica y en el habla de los agentes sociales , es interpretaci?n apenas como un recorte donde deber?n ocurrir las acciones para minimizar la pobreza ; al fin, o PBF es un programa de urgencia moral una vez que combate lo mas emergencial que es el directo de sobrevivir , pero aun no consegui? transformar de una manera significativa la pobreza en el pa?s / O presente trabalho se constitui de um estudo sobre a pobreza e as desigualdades socioterritoriais no Brasil, problematizando as pol?ticas p?blicas sociais (a exemplo da Pol?tica Nacional da Assist?ncia Social e o Programa Bolsa Fam?lia) tendo como refer?ncia a materializa??o destas no territ?rio a partir da an?lise da distribui??o espacial do ?ndice de Desenvolvimento da Fam?lia (IDF) no munic?pio de Pau dos Ferros/RN. Neste sentido, o objetivo principal dessa disserta??o se deu na tentativa de compreender a import?ncia da leitura pr?via do territ?rio para a reflex?o sobre a pobreza em seu aspecto multidimensional e para a territorializa??o das pol?ticas p?blicas sociais constru?das no intento de minimizar a problem?tica da desigualdade social, observando a distribui??o espacial do IDF no munic?pio de Pau dos Ferros/RN. A partir do objetivo geral tra?ado, fez-se uma revis?o te?rica sobre os temas, pobreza, desigualdades sociais e pol?ticas p?blicas, no primeiro caso atentando para o aspecto multidimensional desta, advogando a import?ncia de analisarmos a pobreza n?o apenas pelo crivo da renda, mas considerando outras dimens?es que corroboram para a constitui??o do ser pobre, como moradias prec?rias, falta de saneamento b?sico e infraestrutura, o n?o acesso ? sa?de, educa??o e demais servi?os que possibilitam o indiv?duo viver com melhor dignidade. Compreendendo a import?ncia do conhecimento pr?vio do territ?rio para que ocorra ?s devidas reflex?es e interven??es na realidade territorial buscamos refletir acerca desse conceito e seus nexos com a constru??o e implementa??o das pol?ticas p?blicas sociais tendo a Pol?tica Nacional de Assist?ncia Social (PNAS) como pol?tica basilar e tamb?m o Programa Bolsa Fam?lia (PBF), uma vez que buscamos compreender sua relev?ncia a partir da vis?o do sujeito, ou seja, as benefici?rias do PBF no munic?pio de Pau dos Ferros. Para tanto, realizamos entrevistas orais com as benefici?rias do PBF que foram escolhidas aleatoriamente a partir das equipes dos CRAS, al?m da aplica??o de question?rios semiestruturados e abertos com gestores e assistentes sociais do munic?pio. Buscamos ainda trabalhar com alguns dados do Cadastro ?nico do munic?pio em estudo propondo analisar as condi??es sociais e econ?micas das fam?lias cadastradas. Alguns resultados foram poss?veis, a saber, ? preciso que se interprete a pobreza a partir de v?rias dimens?es para n?o corremos o risco de ficarmos apenas na perspectiva financeira, isto ?, da renda, que embora supra o emergencial n?o ? suficiente para transformar as condi??es de vida das fam?lias; a PNAS pode ser considerada como um avan?o da pol?tica social no Brasil uma vez que possui matricialidade na fam?lia. No entanto, ? preciso avan?ar na interpreta??o do territ?rio que na pol?tica e na fala dos agentes sociais, ? interpretado apenas como um recorte areal onde dever? ocorrer ?s a??es para minimizar a pobreza; por fim, o PBF ? um programa de urg?ncia moral uma vez que sana o mais emergencial que ? o direito de subsist?ncia, mas ainda n?o conseguiu transformar de forma profunda a pobreza no pa?s
50

Avaliação do perigo de inundações bruscas por meio de modelagem hidrogeomorfológica : estudo de caso, Bacia do Arroio Forromeco-RS

Zambrano, Fernando Campo January 2017 (has links)
O aumento da ocorrência de desastres hidrológicos relacionados a inundações bruscas tem recebido maior atenção dos diversos órgãos em suas diferentes escalas, com o objetivo de reduzir ao máximo suas causas. Justamente por isso, as medidas não estruturais são medidas de extrema importância na prevenção de tais desastres. Uma dessas medidas deve ser o mapeamento de áreas de perigo de inundações. Portanto, o objetivo do presente trabalho foi propor e avaliar o perigo de inundações bruscas por meio de modelagem hidrogeomorfológica na bacia do arroio Forromeco-RS. Para isso, foi utilizado o modelo CAESAR-LISFLOOD, para representar os processos hidrológicos em escala de bacia e canal. Em escala de bacia foram gerados hidrogramas a partir da criação de chuvas de projeto para diferentes tempos de retorno (TR), considerando como base o maior evento registrado nessa bacia associado a um TR de 22 anos. Esses hidrogramas foram utilizados nas simulações em escala de canal para gerar os diferentes mapas de inundação em termos de profundidade e velocidade do fluxo da água. Para analisar as áreas de perigo de inundação, foram determinados os índices de perigo (IP) associados aos diferentes TR, a partir da profundidade e a velocidade d’água. Através das análises do resultado de IP foi criado o mapeamento final de perigo associado a três tempos de retorno (5, 22, e 100 anos). Além disso, estabeleceu-se três zonas para identificar os níveis de perigo, considerando o cenário mais crítico dos três mapas. Os resultados mostraram que a maior área inundada se encontra em alto perigo, ocupando 77% da área total, o que significa que as pessoas que moram nessa região estão em perigo tanto em casa, como fora delas. Ao mesmo tempo as construções estão em alta possiblidade de serem danificadas. / The increase in the occurrence of hydrological disasters related to flash floods has begun to be more important for several organs at different scales in order to reduce their magnitude and frequency as much as possible. Precisely because of it, non-structural measures are extremely important measures for preventing such disasters. One of these important measures might be the mapping of flood hazard areas. Therefore, the objective of the present work was to propose and evaluate the flash flood hazard by means of hydrogeomorphic modeling of the Forromeco river basin, Rio Grande do Sul state. Thus, the CAESAR-LISFLOOD model was used to represent the hydrological processes at basin and channel scale. At basin scale hydrographs were generated from the creation of hyetographs for different return periods (RP), considering the largest event recorded in this basin. These hydrographs were used in the channel scale simulations to generate the different flood maps in terms of depth and velocity of water flow. In order to analyze the flood hazard areas, the hazard indexes (HI) associated with the different RPs were determined from the depth and water velocity. Through the IP analysis, the final hazard mapping associated with three RPs (5, 22, and 100 years) was created. In addition, three zones were established to identify the hazard levels, considering the most critical scenario of the three maps. The results showed that the largest flood area is in high degree hazard, occupying 77% of the total area. It indicates that people are in danger both inside and outside houses. At the same time buildings are in high possibility of being damaged.

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