Scaling tests aim to induce scaling behavior in concrete specimens similar to environmental conditions. The efficacy of laboratory tests’ ability to match environmental conditions is important to be able to evaluate the durability of concrete exposed to freeze-thaw cycles and de-icers. This study attempts to correlate results between two existing scaling test standards, ASTM C672 and the BNQ NQ 2621-900. The correlation is done via scaling evaluation including computer-based photogrammetric analysis, visual ratings, and cumulative mass loss measurements. Then a correlation between the laboratory testing and in-situ sidewalk panel specimens is made via visual ratings.

No mês de outubro de 2007 a Comissão Nacional de Cartografia (CONCAR) lançou uma norma cartográfica composta de especificações técnicas para Estruturação de Dados Geoespaciais Digitais Vetoriais (EDGV) para a realização do mapeamento topográfico sistemático no Brasil. No mês de novembro de 2008 foi publicado o Decreto n 6666, que institui a Infra-Estrutura Nacional de Dados Espaciais e ratifica o uso das normas homologadas pela CONCAR, pelas instituições Federais. Este trabalho realiza dois requisitos, a saber: (a) fornece um esquema relacional alinhado as especificações da EDGV e (b) implementa um protótipo, com vistas a sua utilização no processo de restituição fotogramétrica nas instituições públicas responsáveis pelo mapeamento topográfico no Brasil. A implementação é realizada em ambiente de software livre. Também é importante salientar o caráter educacional da plataforma de software a ser implementada, para que o seu uso seja também direcionado para o ensino teórico e prático da fotogrametria digital nas instituições de ensino e pesquisa. / The National Commission of Cartography (CONCAR) in October 2007 launched a pattern composed of standard specifications for Structuring of Digital Geospatial Data Vector (EDGV) for systematic topographic mapping production in Brazil. In November of 2008 it was published the Decree n 6666, that established the National Spatial Data Infrastructure and ratified the use of standards approved by CONCAR. This work accomplishes two goals: (a) to provide a relational schema specification aligned with the EDGV and; (b) to provide an implementation of a prototype, for using in the photogrammetric restitution of topographic mapping in Brazil. The implementation is performed in an environment of free software, according to the GNU/GPL approch. It is also important to emphasize the educational character of the software to be implemented so that its use is also directed to the theoretical and practical studies of digital photogrammetry in the institutions of education and research.

Sammanfattning Undersökningens syfte är att förstå hur noggrann UAS-fotogrammetrin i dagsläget (2013) är.  Frågeställningarna som undersökningen utgick ifrån var: kan UAS-fotogrammetri i dagsläget ge precisa punkter med hjälp av att mäta in centrum av 1x1 meter utlagda plattor som kan ses i ortofoto?;  Kan det ge snarlik noggrannhet med pixelstorleken? samt Kan UAS-tekniken idag användas för att producera pålitliga höjdmodeller? För att uppnå syftet har en undersökning utförts med jämförelse på koordinater insamlade med totalstation och insamlade med UAS-fotogrammetriska metoder. Resultatet visade att medelfelet var drygt 1 pixel på plana koordinater samt på koordinater i höjd. Pixlarnas storlek var mellan 4.7-9.3 cm. Största felkällan ser ut att vara upplösningen på bilderna, men tekniken utvecklas fort. UAS-fotogrammetrin lever väl upp till frågeställningarnas förväntningar. / Abstract The purpose of the study is to understand what the accuracy of UAS photogrammetry today (2013) is. The study was based on the following questions: Can UAS photogrammetry today give precise points, measuring the centre of 1x1 meter plywood boards viewed from an orthophoto?; Can it give similar accuracy as the size of the pixels? And can UAS technology today be used to produce elevation models of good quality? To investigate these questions, a study has been made to compare coordinates collected from a total station and UAS photogrammetric methods. The results show that the standard error is approximately 1 pixel on flat coordinates and 1 pixel on elevated coordinates. The pixel size was between 4.7 and 9.3 cm. The biggest source of error seems to be the resolution on the pictures, but the technology develops quickly. The UAS photogrammetry method definitely meets the expectations of the questions.

No mês de outubro de 2007 a Comissão Nacional de Cartografia (CONCAR) lançou uma norma cartográfica composta de especificações técnicas para Estruturação de Dados Geoespaciais Digitais Vetoriais (EDGV) para a realização do mapeamento topográfico sistemático no Brasil. No mês de novembro de 2008 foi publicado o Decreto n 6666, que institui a Infra-Estrutura Nacional de Dados Espaciais e ratifica o uso das normas homologadas pela CONCAR, pelas instituições Federais. Este trabalho realiza dois requisitos, a saber: (a) fornece um esquema relacional alinhado as especificações da EDGV e (b) implementa um protótipo, com vistas a sua utilização no processo de restituição fotogramétrica nas instituições públicas responsáveis pelo mapeamento topográfico no Brasil. A implementação é realizada em ambiente de software livre. Também é importante salientar o caráter educacional da plataforma de software a ser implementada, para que o seu uso seja também direcionado para o ensino teórico e prático da fotogrametria digital nas instituições de ensino e pesquisa. / The National Commission of Cartography (CONCAR) in October 2007 launched a pattern composed of standard specifications for Structuring of Digital Geospatial Data Vector (EDGV) for systematic topographic mapping production in Brazil. In November of 2008 it was published the Decree n 6666, that established the National Spatial Data Infrastructure and ratified the use of standards approved by CONCAR. This work accomplishes two goals: (a) to provide a relational schema specification aligned with the EDGV and; (b) to provide an implementation of a prototype, for using in the photogrammetric restitution of topographic mapping in Brazil. The implementation is performed in an environment of free software, according to the GNU/GPL approch. It is also important to emphasize the educational character of the software to be implemented so that its use is also directed to the theoretical and practical studies of digital photogrammetry in the institutions of education and research.

Submitted by Cássia Santos (cassia.bcufg@gmail.com) on 2015-11-26T10:24:30Z No. of bitstreams: 2 Dissertação - Leomar Rufino Alves Júnior - 2015.pdf: 5358486 bytes, checksum: 65b930c6a83152c4867b2f00eb5865b2 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2015-11-27T07:27:21Z (GMT) No. of bitstreams: 2 Dissertação - Leomar Rufino Alves Júnior - 2015.pdf: 5358486 bytes, checksum: 65b930c6a83152c4867b2f00eb5865b2 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2015-11-27T07:27:21Z (GMT). No. of bitstreams: 2 Dissertação - Leomar Rufino Alves Júnior - 2015.pdf: 5358486 bytes, checksum: 65b930c6a83152c4867b2f00eb5865b2 (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2015-03-13 / Fundação de Amparo à Pesquisa do Estado de Goiás - FAPEG / This research aimed to verify the precision and accuracy of orthomosaics and Digital Surface Model (DSM) generated automatically by aerial photography taken with an Unmanned Aerial Vehicle (UAV) in urban and rural areas at the cities of Goiânia, Goiás and Edéia, all located in the state of Goiás. The survey also verified for the influence of the scale, depending on the flight height, the influence of the sunlight, and the phenological analysis obtained in agricultural areas with sugarcane and corn (vegetative cycle) crops. Flight plans were drawn up in E-mo-tion software provided by Sensefly - Swiss company manufacturer of UAV Swinglet CAM used in this work. The camera on board UAV was the Canon IXUS 220 HS, with a spatial resolution of 12.1 megapixel, CMOS sensor equipped with type 1 / 2.3" (4000 x 3000 pixel), pixel pitch of 1.54 m, and focal distance equivalent of 35 mm. To check the precision and accuracy of orthomosaics in urban areas, the flights were uniformly distributed in the study area with three-dimensional coordinates pre-marked targets read in the orthomosaic itself, and compared with the coordinates obtained by RTK and static fast positioning methods geodetic survey, using a pair of GNSS signal receiver. Evaluation of Cartographic Accuracy Standards (PEC, defined by the Brazilian decree, no. 89817 of June 20, 1984) was performed by discrepancies between these coordinates. The bias was analyzed by student's t test and the accuracy with the chi-square probability. We have found that in those orthomosaics performed over the urban area in Goiânia city, some buildings were not properly processed in terms of the conical to orthogonal projection; this product was classified as PEC Class A to the 1/250 scale. In Goiás city, the generated orthomosaics without support points were classified as PEC Class A to the 1/2,500 scale, while the orthomosaic generated with eight supporting points was classified as PEC Class A to the 1/1,125 scale. The orthomosaic and MDS generated without ground supporting points presented planialtimetric trends. The mean difference calculated in the orthomosaic with ground supporting was 54 times lower on the E axis, and 111 times lower in N axis, and 10 times lower in the Z axis relative to the average of the discrepancies in orthomosaic without ground control points. The MDS generated with and without supporting showed vertical displacement trend. Thus it was evident the need for supporting points for making orthomosaics and MDS obtained with UAV. In flights performed in crop areas, it was observed that for a better estimate of MPRI vegetation index, the photographs needs to with larger scales (GSD of 5 cm), even with a higher software difficulty in finding homologous points. It did not occur when we used pictures with smaller scales (GSD 20 cm, or larger) for the generation of orthomosaics and MDS. / Esta pesquisa teve por objetivo verificar a precisão e acurácia dos ortomosaicos e Modelo Digital de Superfície (MDS) gerados automaticamente por programa de aerofotogrametria, utilizando fotografias aéreas tomadas com um Veículo Aéreo Não Tripulado (VANT) em áreas urbanas e rurais das cidades de Goiânia, Goiás e Edéia, todas no estado de Goiás. A pesquisa também verificou a influência da escala, em função da altura de voo, a influência da iluminação solar e a análise fenológica em ortomosaicos obtidos em áreas agrícolas com cultivo de cana-de-açúcar e milho (clico vegetativo). Os planos de voo foram elaborados no programa E-mo-tion, fornecido pela Sensefly – empresa suíça fabricante do VANT Swinglet CAM utilizado nesse trabalho. A câmara instalada no VANT foi a Canon IXUS 220 HS, com resolução espacial de 12,1 megapixel, equipada com sensor tipo CMOS 1/2,3” (4000 x 3000 pixel), pixel pitch de 1,54 m, e distância focal equivalente de 35 mm. Para verificar a precisão e acurácia dos ortomosaicos, nas áreas urbanas, foram uniformemente distribuídos nas áreas de estudo alvos pré-sinalizados, com coordenadas tridimensionais lidas nos ortomosaicos e comparadas com as coordenadas obtidas por levantamento geodésico nos métodos de posicionamento RTK e estático rápido, utilizando-se um par de receptor de sinais GNSS. A avaliação do Padrão de Exatidão Cartográfica (PEC) foi realizada pelas discrepâncias entre essas coordenadas. A tendenciosidade foi analisada pelo teste t de Student e a precisão pela probabilidade do qui-quadrado, considerando o ortomosaico Classe A conforme PEC estabelecido no Decreto nº 89.817 de 20.06.1984. Verificou-se que nos ortomosaicos oriundos do aerolevantamento realizado na área urbana (Goiânia), algumas edificações não foram devidamente transformadas da projeção cônica para a ortogonal. Os ortomosaicos gerados com mais de 8 pontos de controle foram classificados como Classe A para a escala de 1/250. Verificou-se, também, que o ortomosaico sem pontos de apoio, oriundo dos aerolevantamentos realizados na cidade de Goiás, foi classificado como Classe A na escala 1/2.500, enquanto o ortomosaico gerado com oito pontos de apoio foi classificado como Classe A na escala de 1/1.125, conforme parâmetros de precisão e exatidão estabelecidos por este mesmo Decreto Federal. O ortomosaico e MDS gerados sem pontos de apoio apresentaram tendência planialtimétrica. As médias das discrepâncias calculadas no ortomosaico com apoio foi 54 vezes menor no eixo E, 111 vezes menor no eixo N e 10 vezes menor no eixo Z, em relação à média das discrepâncias no ortomosaico sem pontos de apoio. O MDS gerado com e sem apoio apresentaram tendência de deslocamento vertical. Ficou evidente a necessidade de utilizar pontos de apoio para a confecção de ortomosaicos e MDS obtidos com VANT. Em relação aos voos realizados em áreas de cultivo observou-se que para uma melhor estimativa do MPRI observou-se que na geração de ortomosaicos a partir de fotografias com escalas maiores (GSD de 5 cm), o programa de processamento das fotografias teve dificuldade em encontrar os pontos homólogos necessários à geração dos ortomosaicos. Fato que não ocorreu quando se utilizou fotografias com escalas menores (GSD de 20 cm) para a geração dos ortomosaicos e MDS.

Abstract This work evaluated the safety and effectiveness of operative techniques used in cranioplastic surgery and outcomes of these surgical methods. In study I the feasibility of endocranial fixation in frontal remodeling surgery for metopic and coronal synostosis was established. Good to excellent aesthetic results were seen in 96% of cases evaluated by a surgeon at the time of follow-up. Three patients out of 27 had complications requiring revisions. No mortality or permanent morbidity, nor complications related to endocranial placement of the plates were seen. Thus it was verified that placing resorbable material intracranially reduces the aesthetic impact without hindering the final result. Study II found that posterior cranial vault distraction procedures produced a mean increase of 25% in intracranial volume. This proved to be an effective technique for treating a variety of craniosynostosis with significant shortage of intracranial volume. 3D photogrammetric imaging was found to be a suitable non-ionizing method for evaluation of cranial volume increase following distraction. In study III a new tool was developed and successfully used for the intraoperative guidance of distractor device placement to ensure congruent vectors and thus reduced complications of these surgical procedures. In study IV long-term functional and aesthetic outcomes of the surgical treatment for sagittal synostoses in patients reaching adulthood was examined. The mean follow-up time was 26.5 years and the patients were 18 to 41 years old at the time of follow-up. The patients treated for sagittal synostosis were equally satisfied with their facial appearance as were their age and gender matched controls. Independent panels found patients’ appearance to be slightly less attractive, but the difference was less than 10 mm on a 100 mm Visual Analogue Scale, representing a low clinical significance. Patients’ socioeconomic situation such as education, housing, employment and marital status equaled controls with similar frequencies of headaches, mental problems or health issues as the controls. / Tiivistelmä Tässä tutkimuksessa selvitettiin kallon saumojen ennenaikaisen luutumisen (kraniosynostoosi) leikkausmenetelmien tehokkuutta ja turvallisuutta sekä pitkäaikaisia tuloksia. Leikkausmenetelmä, jossa epämuotoinen kallo uudelleenmuotoillaan ja luiset osat kiinnitetään toisiinsa kallon sisäpuolelle asennettavilla ja kudokseen hajoavilla levyillä oli tehokas ja luotettava (N=27). Jälkitarkastuksessa tulos arvioitiin erinomaiseksi tai hyväksi 96 %:lla tapauksista. Leikkaushoitoa vaativia ongelmia tai komplikaatioita esiintyi kolmella, mutta pysyvää haittaa ei jäänyt. Komplikaatiot eivät johtuneet levyjen sijainnista kallon sisällä. Saumojen ennenaikaisesta luutumisesta johtuvaa kallon tilavuuden alenemaa hoidettiin venytyshoidolla (N=30). Menetelmällä saavutettiin keskimäärin 25 %:n lisääntyminen tilavuudessa, ja se soveltuukin erityisen hyvin potilaille, joilla tarvitaan suuri tilavuuden lisääntyminen. Leikkaustekniikkaan ei liittynyt isoja komplikaatioita. Tulosta arvioitiin osalla potilaista kolmiulotteisella valokuvauksella, joka perinteisistä seurantamenetelmistä poiketen ei altista ionisoivalle säteilylle, ja se osoittautui käyttökelpoiseksi seurantamenetelmäksi. Venytyshoitoa varten kallon pintaan kiinnitettävät pidennyslaitteet tulee asettaa yhdensuuntaisesti, ja se on teknisesti haasteellista. Työssä kehitettiin kirurginen instrumentti, jolla venyttimet voidaan luotettavammin asetella samansuuntaisiksi. Uusi tekniikka ehkäisee mekaanisia ongelmia, joita muuten voisi ilmetä erisuuntaisten venyttimien välillä pidennyksen edetessä. Lapsuudessa venekallon johdosta leikattujen potilaiden (N=40) pitkäaikaiset hoitotulokset sekä selviytyminen elämässä 26.5 vuoden seuranta-ajan jälkeen olivat hyviä. Heidän taloudellinen ja sosiaalinen tilanne (koulutus, asumismuoto, työllistyminen, siviilisääty ym.) ei eronnut ikä- ja sukupuolivakioitujen vertailuhenkilöiden (N=40) tilanteesta. Yleisessä terveydentilassa, päänsärkyjen esiintymisessä ja mielenterveysongelmissa ei ollut eroa. Potilaiden tyytyväisyys omaan ulkonäköönsä oli samankaltainen kuin vertailuhenkilöillä. Ulkopuolisen asiantuntijapaneelin tekemän arvion perusteella potilaiden kasvojen ulkonäkö oli vähemmän miellyttävä kuin vertailuhenkilöillä, mutta ero oli vähäinen (<10 % ero visual analogue scale, VAS, asteikolla). Asiantuntijapaneeli teki arvionsa tietämättä onko arvioitava henkilö potilas vai vertailuhenkilö.

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Cette thèse présente une étude expérimentale sur un voilier instrumenté, menée pour décrire le comportement aéro-élastique des voiles et du gréement pour des navigations au portant. Les formes des voiles utilisées sont des surfaces non développables avec de fortes courbures provoquant une séparation massive de l’écoulement. De plus, les spinnakers sont des voiles fines et souples rendant l’interaction fluide-structure fortement couplée. A cause du non-respect de certaines règles de similitude, le comportement dynamique d’un spinnaker se prête mal à l’étude en soufflerie et nécessite une comparaison avec des mesures in-situ. Les simulations numériques instationnaires modélisant le comportement aéro-élastique des voiles et du gréement doivent être qualifiées et demandent également des validations. C’est pourquoi un système d’instrumentation embarquée est mis en place sur un J/80, un voilier de huit mètres de long. Il s’agit de mesurer dynamiquement la forme en navigation du spinnaker, les efforts dans les gréements dormant et courant, la répartition de pression sur la voile ainsi que le vent et les attitudes du bateau. La forme du spinnaker en navigation est obtenue grâce à un système de mesure photogrammétrique développé pendant la thèse. La précision de ce système, meilleure que 1,5%, permet de mesurer la forme générale de la voile ainsi que les déformations importantes telles que celles liées au faseyement du guindant. L’effort aérodynamique produit par le spinnaker est obtenu grâce à la mesure de l’intensité des efforts et de leurs directions aux trois extrémités (drisse, amure, écoute) ainsi que par la mesure des pressions sur la voile. Le comportement général du spinnaker est analysé en fonction de l’angle du vent apparent. Une nouvelle représentation utilisant les surfaces de Bézier triangulaires est développée pour décrire la forme tridimensionnelle du spinnaker. Quelques points de contrôles suffisent pour représenter la voile et caractériser le type de voile. Un comportement dynamique propre au spinnaker est également étudié. Le réglage supposé optimal d’un spinnaker est à la limite du faseyement, en laissant le guindant se replier légèrement. Cependant ce réglage n’a jamais été scientifiquement étudié auparavant. Nous avons montré qu’il s’agit d’une forte interaction fluide-structure tridimensionnelle où une importante dépression apparaît au bord d’attaque, qui augmente temporairement les efforts, ce qui n’est pas observé avec un réglage plus bordé. / A full-scale experimental study on an instrumented sailing yacht is conducted to better assess the aero-elastic behaviour of the sails and rigging in downwind navigations. The downwind sail shape is a non-developable surface with high curvature leading to massive flow separation. In addition, spinnakers are thin and flexible sails leading to a strongly coupled Fluid-Structure Interaction. Due to the non-respect of some rules of similitude, the unsteady behaviour of downwind sails cannot be easily investigated with wind tunnel tests that would need comparison with full-scale experiments. Moreover unsteady numerical simulations modelling the aero-elastic behaviour of the sails and rigging require validations. An inboard instrumentation system has been developed on a 8 meter J/80 sailboat to simultaneously and dynamically measure the flying shape of the spinnaker, the aerodynamic loads transmitted to the rigging, the pressure distribution on the sail as well as the boat and wind data. The shape of the spinnaker while sailing is acquired by a photogrammetric system developed during this PhD. The accuracy of this new system, better than 1.5%, is used to measure the global shape and the main dynamic deformations, such as the flapping of the luff. The aerodynamic load produced by the spinnaker is assessed by the measurements of the load magnitudes and directions on the three corners of the sail (head, tack and clew), and also by the pressure distribution on the spinnaker. The global behaviour of the spinnaker is analysed according to the apparent wind angle. A new representation using Bézier triangular surfaces defines the spinnaker 3D shape. A few control points enable to represent the sail and can easily characterise the type of sail. A typical unsteady behaviour of the spinnaker is also analysed. Letting the luff of the sail flap is known by sailors as the optimal trim but has never been scientifically studied before. It is found that it is a complex three dimensional fluid-structure interaction problem where a high suction near the leading edge occurs, producing a temporary increase of the force coefficient that would not be possible otherwise.

El siguiente trabajo de investigación se realizó en la bajada de Armendáriz, acantilado de la Costa Verde, distrito de Miraflores, provincia de Lima, Perú. En este se propone la creación de una metodología de control topográfico en la zona anteriormente mencionada, esto debido a que se presentan constantes deslizamientos de rocas por diversos factores como la erosión marina y el tránsito vehicular cercano. Usando información del Instituto Geográfico Nacional (IGN), información brindada por profesionales en el área e información obtenida del vuelo fotogramétrico con dron Mavic 2 Pro realizado, se elaboró la comparación de perfiles longitudinales de los años 2019, 2020 y 2021 en una zona del talud que sufre deslizamientos de manera constante. Con el fin de mantener la precisión y coherencia de los resultados, se procesó la información obtenida para lograr las mismas características entre los planos de curvas de nivel que sirvieron para la realización de los cálculos y el posterior análisis. Entre los principales resultados obtenidos se determinó que la parte superior del talud se redujo 1.30 m durante los años evaluados, la parte media una reducción de 0.50 m y la parte inferior un incremento de 1.20 m. Con los resultados mencionados anteriormente se determinó la tendencia a sufrir derrumbes que posee la zona del talud evaluada y se propuso la realización de vuelos fotogramétricos anuales para el seguimiento del comportamiento del talud con el fin de implementar obras de ingeniería de contención en las zonas vulnerables. / The following research work was carried out in the Bajada de Armendariz, cliff of the Costa Verde, district of Miraflores, province of Lima, Peru. In this, the creation of a topographic control methodology in the aforementioned area is proposed, due to the fact that there are constant rock slides due to various factors such as marine erosion and nearby vehicular traffic. Using information from the National Geographic Institute (IGN), information provided by professionals in the area and information obtained from the photogrammetric flight with a Mavic 2 Pro drone carried out. the comparison of longitudinal profiles of the years 2019, 2020 and 2021 in an area of ​​the slope was elaborated that suffers landslides constantly. In order to maintain the precision and coherence of the results, the information obtained was processed to achieve the same characteristics between the contour planes that were used to carry out the calculations and the subsequent analysis. Among the main results obtained, it was determined that the upper part of the slope decreased 1.30 m during the evaluated years, the middle part a reduction of 0.50 m and the lower part an increase of 1.20 m. With the aforementioned results, the tendency to collapse in the area of ​​the evaluated slope was determined and it was proposed to carry out annual photogrammetric flights to monitor the behavior of the slope in order to implement containment engineering works in vulnerable areas. / Trabajo de investigación