Bibliographies thématiques / CAD reconstruction

Littérature scientifique sur le sujet « CAD reconstruction »

Auteur : Grafiati
Publié le 10 mars 2023

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Consultez les listes thématiques d’articles de revues, de livres, de thèses, de rapports de conférences et d’autres sources académiques sur le sujet « CAD reconstruction ».

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Articles de revues sur le sujet "CAD reconstruction"

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Qian, Gui Ping, et Ruo Feng Tong. « Automatical Reconstruction of Deficient CAD Model ». Advanced Materials Research 186 (janvier 2011) : 241–45. http://dx.doi.org/10.4028/www.scientific.net/amr.186.241.

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This paper presents a new CAD model reconstruction method for finite element mesh analysis. It has been accepted by many researchers that modification of a model is often a necessity as a precursor to effective mesh generation. We design an IGES surface model transformation and repairing method based on trimmed B-spline surface patches, and give an algorithm for reconstructing Brep model from surface model without correct topology information. In processing Brep model for numerical simulation, the critical issues involves the rectification of geometrical and topological errors, clearing up sharp edges and cracks, geometry healing will be emphasized. Our model-healing algorithm essentially simplifies the problems of the imperfect models and allows one to deal with simple surface model rather than complex surface representations for finite element mesh.
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Sekou, Singare, Shou Yan Zhong, Guang Hui Xu, Wei Ping Wang et Jian Jun Zhou. « CAD-CAM Prosthesis in Maxillo-Facial Surgery ». Advanced Materials Research 139-141 (octobre 2010) : 1241–44. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.1241.

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To improve the maxillofacial surgery outcome, modern manufacturing methods such as rapid prototyping (RP), reverse engineering (RE) and medical imaging data have been utilised to manufacture custom-made prostheses after previous failed reconstructive surgery. After acquisition of data, an individual computer-based 3D model of the bony defect was generated and transferred into RE software to create the prosthesis CAD model. Then the physical model of the prosthesis was fabricated by RP technique. The precise fit of the prosthesis was evaluated using the prosthesis and skull models. The prosthesis was then directly used in investment casting such as “Quick Cast” pattern to produce the titanium model. In the clinical reports presented here, reconstructions of one patient with large mandible bone defects were performed using this method. The custom prostheses perfectly fit the defects during the operations, and surgery time was reduced. These cases showed that the prefabrication of a prosthesis using modern manufacturing technology is an effective method for maxillofacial defect reconstruction.
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Melchels, Ferry, Paul Severin Wiggenhauser, David Warne, Mark Barry, Fook Rhu Ong, Woon Shin Chong, Dietmar Werner Hutmacher et Jan-Thorsten Schantz. « CAD/CAM-assisted breast reconstruction ». Biofabrication 3, no 3 (1 septembre 2011) : 034114. http://dx.doi.org/10.1088/1758-5082/3/3/034114.

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Caro, Dann Joel, et Ferdinand Pamintuan. « Application of Open-Source 3D Planning Software in Virtual Reconstruction of Complex Maxillofacial Defects ». Philippine Journal of Otolaryngology Head and Neck Surgery 36, no 2 (11 novembre 2021) : 30. http://dx.doi.org/10.32412/pjohns.v36i2.1801.

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ABSTRACT Objective: To present our in-house 3D planning protocol utilizing open-source computer-aided design software and discuss specific applications in reconstruction of various craniomaxillofacial defects, demonstrating a free, accessible, efficient, accurate, and easily learnable alternative to expensive counterparts. Methods: Design: Case Series Setting: Tertiary Private Training Hospital Participants: Ten (10) patients who underwent CAD assisted reconstructive surgeries from February 2017 – May 2018. Results: A total of 10 patients were included; 7 mandibular reconstructions were surgically reconstructed using our 3D planning protocol and achieved symmetric mandibular contour, with good functional occlusion after surgery; 1 cranioplasty and 1 orbital trauma case also achieved good symmetry and adequate correction of enophthalmos respectively. However, inadequate soft tissue correction was seen in 1 case of maxillary reconstruction despite achieving symmetric bony contour. Conclusion: Our 3D planning protocol using open-source CAD applications is a viable alternative to expensive professional counterparts. Additional prospective studies may better demonstrate benefits in terms of accuracy and decreasing intraoperative time in craniomaxillofacial and head and neck reconstruction.
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Zhang, yanqun, Chunhua Sun et Ichiro Hagiwara. « 612 Research on CAD Modeling Freeform Surface Reconstruction from Mesh Data ». Proceedings of The Computational Mechanics Conference 2005.18 (2005) : 291–92. http://dx.doi.org/10.1299/jsmecmd.2005.18.291.

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Cho, Min-Jeong, Alex A. Kane, Rami R. Hallac, Noopur Gangopadhyay et James R. Seaward. « Liquid Latex Molding : A Novel Application of 3D Printing to Facilitate Flap Design ». Cleft Palate-Craniofacial Journal 54, no 4 (juillet 2017) : 453–56. http://dx.doi.org/10.1597/15-252.

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The approach to bony craniofacial reconstruction has been significantly enhanced with the development of patient-specific, computer-aided designed and manufactured (CAD/CAM) implants. This technology, however, has not yet been widely employed for soft tissue reconstruction. While algorithmic approaches based on the size, location, and etiology of the defect are effective in most cases, a patient-specific CAD/CAM approach has benefits in complex reconstructive problems. In this study, we present a patient-specific approach to preoperative flap planning: using three-dimensional (3D) printing and liquid latex to create a flexible model of a flap, and demonstrate its application in planning a complex scalp reconstruction.
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SHINODA, Junichi, Zohuqi WU, Wenjie CHENG et Ichiro HAGIWARA. « 611 Reconstruction Technique in Reverse Engineering ». Proceedings of The Computational Mechanics Conference 2005.18 (2005) : 289–90. http://dx.doi.org/10.1299/jsmecmd.2005.18.289.

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Bok, S. H., A. Y. C. Nee et S. L. Lee. « Object-Oriented Reconstruction for CAD Modelling ». CIRP Annals 39, no 1 (1990) : 133–36. http://dx.doi.org/10.1016/s0007-8506(07)61019-1.

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Lee, Hyunoh, Jinwon Lee, Hyungki Kim et Duhwan Mun. « Dataset and method for deep learning-based reconstruction of 3D CAD models containing machining features for mechanical parts ». Journal of Computational Design and Engineering 9, no 1 (30 décembre 2021) : 114–27. http://dx.doi.org/10.1093/jcde/qwab072.

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ABSTRACT Three-dimensional (3D) computer-aided design (CAD) model reconstruction techniques are used for numerous purposes across various industries, including free-viewpoint video reconstruction, robotic mapping, tomographic reconstruction, 3D object recognition, and reverse engineering. With the development of deep learning techniques, researchers are investigating the reconstruction of 3D CAD models using learning-based methods. Therefore, we proposed a method to effectively reconstruct 3D CAD models containing machining features into 3D voxels through a 3D encoder–decoder network. 3D CAD model datasets were built to train the 3D CAD model reconstruction network. For this purpose, large-scale 3D CAD models containing machining features were generated through parametric modeling and then converted into a 3D voxel format to build the training datasets. The encoder–decoder network was then trained using these training datasets. Finally, the performance of the trained network was evaluated through 3D reconstruction experiments on numerous test parts, which demonstrated a high reconstruction performance with an error rate of approximately 1%.
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Zhang, Dong, Teng Huang et Jing Cao Song. « CAD Model Reconstruction Using 3D Laser Scanning ». Applied Mechanics and Materials 71-78 (juillet 2011) : 3485–88. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3485.

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This paper presents a method for automatic CAD model reconstruction from 3D laser scanning data. 3D laser scanning is a surveying instrument integrated with various kinds of new high technologies, which operates by non-contact high speed laser measurement. The whole process includes data capturing, noise reduction, sub-sampling and surface reconstruction. Modeling accuracy is analyzed afterwards and finally comes to a conclusion that modeling from 3D laser scanning has a great value in virtual reproduction of the objects. Result shows the efficiency of the method addressed in the paper to mode objects.
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Thèses sur le sujet "CAD reconstruction"

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Hoppe, Hugues. « Surface reconstruction from unorganized points / ». Thesis, Connect to this title online ; UW restricted, 1994. http://hdl.handle.net/1773/6924.

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Lim, Alan Wui Tze. « Exploring vision mechanisms for constructing a CAD reconstruction and recognition system ». Thesis, University of Sussex, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336322.

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Liang, Haidong. « Facial soft tissue 3D modelling ». Thesis, University of Surrey, 1999. http://epubs.surrey.ac.uk/842802/.

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The purpose of this study is to find the design tool to create a soft tissue 3D model able to be used for finite element analysis to simulate the facial soft tissue deformation under g-loading and the helmet and mask/tissue interaction. Such a model will be of value in the design of new helmets and oxygen mask system, to reduce the effects of inertia, to provide improved fit, to minimise oxygen leakage especially when deformed under high g-loading. This work is concerned with the creation of a 3D geometric model. Further work may involve the measurement of mechanical properties of the facial soft tissue, finite element analysis and validation of the model. Using high frequency A-scan ultrasound allows the superficial tissue to be measured on volunteers without risk. The investigation covers 112 points on half of the face, linked to 11 defined morphological zones. The zonal boundaries are based on previous research and are initially identified by inspection and palpation of the face. There is large thickness range difference (30%) over the face in most zones defined in an individual. The iso-thickness zone hypothesis is not valid if the 'constant' thickness criterion is set to be 10% for all zones. Software algorithm for automatically detecting the facial soft tissue thickness is developed and validated to be effective (5% fail rate). Thickness data is acquired from European white males, females and Chinese males. The data collected in this study is also useful in forensic science for facial reconstruction purpose. Laser scanning method has been used to obtain the facial surface profile to create a surface model into which the soft tissue layer thickness distribution around the face can be incorporated. The surface model is exported in IGES format and can be imported in CAD software. Electromagnetic space locating method is used to acquire the ultrasound probe position so as to find the position of the tissue thickness. Point-based registration method is used to integrate the ultrasound thickness data into the laser scanned surface model to create a soft tissue shell solid model. The model is exported in IGES data format so that it can be imported into a finite element analysis package for further processing.
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Chhaya, Mohit Prashant. « Additive tissue manufacturing for breast reconstruction : Combining CAD/CAM with adipose tissue engineering ». Thesis, Queensland University of Technology, 2015. https://eprints.qut.edu.au/84762/9/Mohit_Prashant_Chhaya_Thesis.pdf.

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The primary aim of this multidisciplinary project was to develop a new generation of breast implants. Disrupting the currently prevailing paradigm of silicone implants which permanently introduce a foreign body into mastectomy patients, highly porous implants developed as part of this PhD project are biodegradable by the body and augment the growth of natural tissue. Our technology platform leverages computer-assisted-design which allows us to manufacture fully patient-specific implants based on a personalised medicine approach. Multiple animal studies conducted in this project have shown that the polymeric implant slowly degrades within the body harmlessly while the body's own tissue forms concurrently.
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Bénière, Roseline. « Reconstruction d’un modèle B-Rep à partir d’un maillage 3D ». Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20034/document.

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De nos jours, la majorité des objets manufacturés sont conçus par des logiciels informatiques de CAO (Conception Assistée par Ordinateur). Cependant, lors de la visualisation, d'échange de données ou des processus de fabrication, le modèle géométrique doit être discrétisé en un maillage 3D composé d'un nombre fini de sommets et d'arêtes. Or, dans certaines situations le modèle initial peut être perdu ou indisponible. La représentation discrète 3D peut aussi être modifiée, par exemple après une simulation numérique, et ne plus correspondre au modèle initial. Une méthode de rétro-ingénierie est alors nécessaire afin de reconstruire une représentation continue 3D à partir de la représentation discrète.Dans ce manuscrit, nous présentons une procédure automatique et complète de rétro-ingénierie pour les maillages 3D issus principalement de la discrétisation d'objets mécaniques. Pour cela, nous proposons des améliorations sur la détection de primitives géométriques simples. Puis, nous introduisons un formalisme clair pour la définition de la topologie de l'objet et la construction des intersections entre les primitives. Enfin, nous décrivons une nouvelle méthode de construction de surfaces paramétriques 3D, fondée sur l'extraction automatique de grilles rectangulaires régulières supports. La méthode a été testée sur des maillages 3D issus d'applications industrielles et permet d'obtenir des modèles B-Rep cohérents
Nowadays, most of the manufactured objects are designed using CAD (Computer-Aided Design) software. Nevertheless, for visualization, data exchange or manufacturing applications, the geometric model has to be discretized into a 3D mesh composed of a finite number of vertices and edges. But, in some cases, the initial model may be lost or unavailable. In other cases, the 3D discrete representation may be modified, for example after a numerical simulation, and does not correspond anymore to the initial model. A retro-engineering method is then required to reconstruct a 3D continuous representation from the discrete one.In this Ph.D. Thesis, we present an automatic and comprehensive reverse engineering process mainly dedicated to 3D meshes of mechanical items. We present first several improvements in automatically detecting geometric primitives from a 3D mesh. Then, we introduce a clear formalism to define the topology of the object and to construct the intersections between primitives. At the end, we describe a new method to fit 3D parametric surfaces which is based on extracting regular rectangular grids. The whole process is tested on 3D industrial meshes and results in reconstructing consistent B-Rep models
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Strand, Mathias. « Standardisering av processer och aktiviteter inom kontrollanläggningar och elmontage ». Thesis, KTH, Data- och elektroteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-169324.

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I detta examensarbete har en undersökning utförts på konsultföretaget ÅF, och deras arbetssätt inom dokumentation och kontrollanläggningar för att utreda om det fanns effektiviseringspotentialer. Undersökningen har i största del innefattat intervjuer med verksamma konsulter inom kontrollanläggningar och elmontage på transformatorstationer. Konsulterna arbetade som konstruktörer och tog fram ritningar främst till kontrollutrustningar. Resultatet från intervjuerna analyserades för att sedan dra slutsatser om effektiviseringsmöjligheter inom verksamheten. Olika kontor i verksamheten undersöktes och arbetssättet varierade på de olika kontoren. En skillnad var det CAD-program som användes och ett förslag var att använda samma program. Effektiviseringspotentialer fanns också genom att återanvända kretsscheman till viss del från föregående projekt. Ett annat förslag var därför att införa databaser där kretsscheman kan samlas in och delas mellan de olika kontoren.
In this thesis, a study has been carried out for the consulting company ÅF, and their work method within documentation and control facilities to investigate whether there were any potential for efficiency improvements. The investigation has largely involved interviews with operating consultants within the control facility on substations. The consultants worked as electrical designers and produced drawings mainly for control equipment. The results of the interviews were analyzed to draw conclusions about the efficiency potentials within the business. Different offices in the business were examined and the work approach varied between the offices. One difference was the CAD-software used and a suggestion was to use the same program. Efficiency improvement potentials were also by re-using electrical schematics to some extent from previous projects and another suggestion was to establish databases where electrical schematics can be gathered and shared between the different offices.
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Bey, Aurélien. « Reconstruction de modèles CAO de scènes complexes à partir de nuages de points basés sur l’utilisation de connaissances a priori ». Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10103/document.

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Certaines opérations de maintenance sur sites industriels nécessitent une planification à partir de modèles numériques 3D des scènes où se déroulent les interventions. Pour permettre la simulation de ces opérations, les modèles 3D utilisés doivent représenter fidèlement la réalité du terrain. Ces représentations virtuelles sont habituellement construites à partir de nuages de points relevés sur le site, constituant une description métrologique exacte de l’environnement sans toutefois fournir une description géométrique de haut niveau.Il existe une grande quantité de travaux abordant le problème de la reconstruction de modèles 3D à partir de nuages de points, mais peu sont en mesure de fournir des résultats suffisamment fiables dans un contexte industriel et cette tâche nécessite en pratique l’intervention d’opérateurs humains.Les travaux réalisés dans le cadre de cette thèse visent l’automatisation de la reconstruction,avec comme principal objectif la fiabilité des résultats obtenus à l’issu du processus. Au vu de la complexité de ce problème, nous proposons d’exploiter des connaissances et données a priori pour guider la reconstruction. Le premier a priori concerne la compositiondes modèles 3D : en Conception Assistée par Ordinateur (CAO), les scènes industrielles sont couramment décrites comme des assemblages de primitives géométriques simples telles que les plans, sphères, cylindres, cônes, tores, etc. Nous hiérarchisons l’analyse en traitant dans un premier temps les plans et les cylindres, comme un préalable à la détection de stores. On obtient ainsi une description fiable des principaux composants d’intérêt dans les environnements industriels. Nous proposons en outre d’exploiter un certain nombre de règles régissant la manière dont ces primitives s’assemblent en un modèle CAO, basées surdes connaissances ”métier” caractérisant les scènes industrielles que nous traitons. De plus,nous tirons parti d’un modèle CAO existant d´ecrivant une scène similaire à celle que nous souhaitons reconstruire, provenant typiquement de la reconstruction antérieure d’un site semblable au site d’intérêt. Bien que semblables en théorie, ces scènes peuvent présenterdes différences significatives qui s’accentuent au cours de leur exploitation.La méthode que nous développons se fonde sur une formulation Bayésienne du problème de reconstruction : il s’agit de retrouver le modèle CAO le plus probable vis à visdes différentes attentes portées par les données et les a priori sur le modèle à reconstruire. Les diverses sources d’a priori s’expriment naturellement dans cette formulation. Pour permettre la recherche du modèle CAO optimal, nous proposons une approche basée surdes tentatives d’insertion d’objets générés aléatoirement. L’acceptation ou le rejet de ces objets repose ensuite sur l’am´elioration systématique de la solution en cours de construction. Le modèle CAO se construit ainsi progressivement, par ajout et suppression d’objets, jusqu’à obtention d’une solution localement optimale
3D models are often used in order to plan the maintenance of industrial environments.When it comes to the simulation of maintenance interventions, these 3D models have todescribe accurately the actual state of the scenes they stand for. These representationsare usually built from 3D point clouds that are huge set of 3D measurements acquiredin industrial sites, which guarantees the accuracy of the resulting 3D model. Althoughthere exists many works addressing the reconstruction problem, there is no solution toour knowledge which can provide results that are reliable enough to be further used inindustrial applications. Therefore this task is in fact handled by human experts nowadays.This thesis aims at providing a solution automating the reconstruction of industrialsites from 3D point clouds and providing highly reliable results. For that purpose, ourapproach relies on some available a priori knowledge and data about the scene to beprocessed. First, we consider that the 3D models of industrial sites are made of simpleprimitive shapes. Indeed, in the Computer Aided Design (CAD) field, this kind of scenesare described as assemblies of shapes such as planes, spheres, cylinders, cones, tori, . . . Ourown work focuses on planes, cylinders and tori since these three kind of shapes allow thedescription of most of the main components in industrial environment. Furthermore, weset some a priori rules about the way shapes should be assembled in a CAD model standingfor an industrial facility, which are based on expert knowledge about these environments.Eventually, we suppose that a CAD model standing for a scene which is similar to theone to be processed is available. This a priori CAO model typically comes from the priorreconstruction of a scene which looks like the one we are interested in. Despite the factthat they are similar theoretically, there may be significant differences between the sitessince each one has its own life cycle.Our work first states the reconstruction task as a Bayesian problem in which we haveto find the most probable CAD Model with respect to both the point cloud and the a prioriexpectations. In order to reach the CAD model maximizing the target probability, wepropose an iterative approach which improves the solution under construction each time anew randomly generated shape is tried to be inserted in it. Thus, the CAD model is builtstep by step by adding and removing shapes, until the algorithm gets to a local maximumof the target probability
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Pamias, Romero Jorge. « Soluciones Customizadas en Reconstrucción Mandibular con Injerto Microvascularizado de Peroné y su Influencia en la Calidad de Vida ». Doctoral thesis, Universitat Autònoma de Barcelona, 2021. http://hdl.handle.net/10803/672608.

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La tècnica clàssica per a la reconstrucció mandibular emprant empelt microvascularitzat de peroné implicava en bona mesura la utilització de tècniques de remodelació manual de l’empelt emprant plantilles dissenyades en dues dimensions (2D) amb mesures obtingudes a mà alçada i amb el modelatge manual de les plaques per a la fixació de l’empelt de peroné, que es duia a terme d’una forma artesanal durant el procediment quirúrgic. Al llarg de l’última dècada, i com a conseqüència del desenvolupament de les noves tecnologies, s’ha produït l’aplicació de la cirurgia virtual i del disseny assistit per ordinador (CAD: Computer-Aided Design) a tots els camps de la cirurgia maxil·lofacial, i més específicament en la reconstrucció mandibular. Aquesta tecnologia ha demostrat una millora de l’eficiència, la precisió i la reproduïbilitat en la cirurgia reconstructiva i ha proporcionat els mitjans per generar diferents dispositius i guies quirúrgiques, així com per dur a terme prototips ràpids de models (models de resina estereolitogràfics) sobre els quals poden modelar-se plaques o implants de titani abans de l’operació per al seu posterior ús intraoperatori. Una de les últimes innovacions en el camp de la tecnologia assistida per ordinador en la reconstrucció mandibular ha tingut lloc a través del procés de fabricació assistida per ordinador (CAM: Computer-Aided Manufacturing) amb l’adveniment del titani –imprès en 3D–, que ha permès la impressió de plaques de reconstrucció totalment a mida i personalitzades per al pacient. La impressió de les plaques de titani permet una transició automatitzada i directa del disseny (CAD) a la fabricació assistida per ordinador (CAM), cosa que redueix encara més la introducció d’errors humans en les etapes de fabricació finals, com a conseqüència del modelatge de la placa sobre un model estereolitogràfic. Per aquest motiu, amb aquesta tecnologia es podrien reduir encara més els temps quirúrgics i la freqüència de les complicacions, així com obtenir una reconstrucció més precisa. Amb aquesta tesi es pretén dur a terme una anàlisi exhaustiva d’una sèrie de pacients en els quals es van emprar plaques de titani impreses especifiques per a cada pacient en la reconstrucció mandibular amb empelt microvascularitzat de peroné. La tesi conclou que la reconstrucció mandibular amb tecnologia CAD-CAM emprant plaques de reconstrucció personalitzades és una tècnica que mostra estabilitat dels resultats al llarg del temps, i segura pel que fa a temps quirúrgics i d’isquèmia, complicacions i dies d’hospitalització, i una tècnica que mostra uns bons resultats en termes de qualitat de vida. A més a més, la tesi conclou que és possible descriure un protocol que permeti un flux de treball eficaç i eficient per tal de treballar amb tecnologia CAD-CAM en un hospital terciari.
La técnica clásica para la reconstrucción mandibular usando injerto microvascularizado de peroné implicaba en gran medida la utilización de técnicas de remodelado manual del injerto utilizando plantillas diseñadas en dos dimensiones (2D) con medidas obtenidas a mano alzada y con el modelado manual de las placas para la fijación del injerto de peroné, que se realizaba de una forma artesanal durante el procedimiento quirúrgico. En la última década, y debido al desarrollo de las nuevas tecnologías, se ha producido la aplicación de la cirugía virtual y el diseño asistido por ordenador (CAD: Computer-Aided Design) en todos los campos de la cirugía maxilofacial y más específicamente en la reconstrucción mandibular. Esta tecnología ha demostrado mejorar la eficiencia, la precisión y la reproducibilidad en la cirugía reconstructiva y ha proporcionado los medios para generar diferentes dispositivos y guías quirúrgicas así como realizar prototipos rápidos de modelos (modelos de resina estereolitográficos) sobre los cuales pueden modelarse placas o implantes de titanio antes de la operación para su posterior uso intraoperatorio. Una de las últimas innovaciones en el campo de la tecnología asistida por ordenador en la reconstrucción mandibular se ha producido a través del proceso de fabricación asistida por ordenador (CAM: Computer-Aided Manufacturing) con el advenimiento del titanio “impreso en 3D”, que ha permitido la impresión de placas de reconstrucción totalmente a medida y personalizadas para el paciente. La impresión de las placas de titanio permite una transición automatizada y directa del diseño (CAD) a la fabricación asistida por ordenador (CAM), lo que reduce aún más la introducción de errores humanos en las etapas de fabricación finales debido al modelado de la placa sobre un modelo estereolitográfico; por ello, con esta tecnología se podrían reducir aún más los tiempos quirúrgicos y la frecuencia de las complicaciones, así como obtener una reconstrucción más precisa. Con la presente tesis se pretende realizar un análisis exhaustivo de una serie de pacientes en los que se utilizaron placas de titanio impresas específicas para cada paciente en la reconstrucción mandibular con injerto microvascularizado de peroné. La tesis concluye que la reconstrucción mandibular con tecnología CAD-CAM utilizando placas de reconstrucción personalizadas es una técnica que muestra estabilidad de los resultados en el tiempo, y segura en cuanto a tiempos quirúrgicos y de isquemia, complicaciones y días de hospitalización, y una técnica que muestra unos buenos resultados en cuanto a calidad de vida. Además, la tesis concluye que resulta posible describir un protocolo que permita un flujo de trabajo eficaz y eficiente para trabajar con tecnología CAD-CAM en un hospital terciario.
The classical technique for mandibular reconstruction using a vascularized fibula flap involved to a great extent using manual modelling techniques on the flap using 2D-designed templates. Dimensions were obtained manually, and plates for locking the fibula flap were also modelled manually in a hand-made process that was performed during the surgical process. Over the last decade, given the development of new technologies, virtual surgery and Computer-Aided Design (CAD) have been applied to all maxillofacial surgery fields, specifically in mandibular reconstruction. This technology has been shown to improve efficiency, accuracy and reproducibility in reconstructive surgery, and has provided the means to generate several devices and surgical guides, and to created model rapid prototypes (stereolithographic resin models) on which to model plates or titanium implants –to be used over the surgical proces– before surgery. One of the latest innovations in computer-assisted technology involved in mandibular reconstruction has been achieved through the Computer-Aided Manufacturing (CAM) process, with the emergence of 3D-printed titanium, which allowed for printing reconstruction plates that are completely customized and tailored to the patient. Printing titanium plates allows for an automated, straightforward transition from design computer-assisted design (CAD) to computer-assisted manufacturing (CAM), which helps further avoid human mistakes in the final manufacturing steps, as the plate is modelled on a stereolithographic model. For this reason, this technology would bring about a further decrease in surgical time and frequency of surgical complications, and would also help increase the accuracy of reconstructions. The aim of this thesis is to perform a comprehensive analysis of a series of patients in which custom-made, patient-specific titanium plates for mandibular reconstruction with microvascularized fibula flap. The thesis concludes that mandibular reconstruction with CAD-CAM technology using custom-made reconstruction plates is a technique that provide stable results over time; it is a safe technique in terms of surgical times, ischemia times, complications and length of hospital stay, and a technique where good quality-of-life results are obtained. Besides, the thesis concludes that it is possible to describe a protocol that allows for an effective and efficient workflow in order to work with CAD-CAM technology in a tertiary hospital.
Universitat Autònoma de Barcelona. Programa de Doctorat en Cirurgia i Ciències Morfològiques
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Sembdner, Philipp. « Rechnergestützte Planung und Rekonstruktion für individuelle Langzeit-Knochenimplantate am Beispiel des Unterkiefers ». Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-220272.

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Die vorliegende Arbeit befasst sich mit der Entwicklung und Umsetzung von Methoden und Werkzeugen zur Bereitstellung von Modellen und Randbedingungen für die Konstruktion individueller Langzeit-Knochenimplantate (Konstruktionsvorbereitung). Grundlage dabei ist, dass die Planung aus medizinischer Sicht z.B. durch einen Chirurgen und die Konstruktion unter technischen Aspekten z.B. durch einen Konstrukteur getrennt erfolgt. Hierfür wird ein erarbeitetes Planungskonzept vorgestellt, welches sowohl die geplanten geometrischen Merkmale, als auch weiterführende Metadaten beinhaltet (Randbedingungen). Die Übergabe dieser Planungsdaten an die Konstruktion erfolgt über eine dafür entworfene Formatbeschreibung im Kontext der Schnittstelle zwischen Mediziner und Ingenieur. Weiterführend wird die Notwendigkeit von speziellen Funktionen für die Konstruktion von individuellen Implantaten in der Arbeitsumgebung des Konstrukteurs (z.B. Modelliersystem – CAD) am Beispiel der konturlinienbasierten Modellrekonstruktion erörtert. Die gesamtheitliche Basis bildet eine durchgängig digitale Prozesskette zur Datenaufbereitung, Konstruktion und Fertigung. Die Anwendbarkeit der Methoden und zweier umgesetzter Demonstratoren wurde innerhalb eines interdisziplinär angelegten Projektes am realen Patientenfall bestätigt.
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Stockley, Edward William. « Three-dimensional reconstruction and electronic modelling of CA1 hippocampal neurones ». Thesis, University of Southampton, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295927.

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Livres sur le sujet "CAD reconstruction"

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Architects without frontiers : War, reconstruction and design responsibility. Amsterdam : Architectural Press, 2006.

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Leonovich, Sergey, Nikolay Chernoivan, Viktor Tur et Dmitriy Litvinovskiy. Technology of reconstruction of buildings and structures. ru : INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1867636.

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The monograph provides the basics of technology for the production of general construction and finishing works performed during the reconstruction of existing industrial and civil facilities: strengthening and restoration of exploited structures, as well as the construction of new buildings and structures designed at the reconstructed facility. The issues of conducting field surveys of operated buildings and structures in order to prepare a conclusion on the technical condition of load-bearing and enclosing structures are considered. The main design solutions and technology of work during the reconstruction (repair, reinforcement) of load-bearing and enclosing structures of operated facilities made of the following materials are given: monolithic and precast reinforced concrete; metal structures; brickwork; elements of wooden structures. The technology of rehabilitation (repair) of finishing coatings is given: monolithic plaster, wall and floor cladding with ceramic tiles and synthetic coatings, as well as repair of surfaces lined with slabs made of natural materials (granite, marble). The effective technology of construction of building structures of shallow foundations, double-layer insulated brick walls, buildings with a monolithic reinforced concrete supporting frame; the device of a waterproof carpet made of PVC membranes, etc. are described. For civil engineers. It can be useful for students, postgraduates and teachers of technical universities.
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Cai jing zheng yi de xing fa guan dian : Reconstructing economic justice in criminal laws. Taibei Shi : Yuan zhao chu ban gong si, 2014.

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Political economy of statebuilding : Power after peace. New York : Routledge, 2012.

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American foreign policy and postwar reconstruction : Comparing Japan and Iraq. Milton Park, Abingdon, Oxon, [England] : Routledge, 2010.

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Engineering peace : The military role in postconflict reconstruction. Washington, DC : Institute of Peace Press, 2004.

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Military integration after civil wars : Multiethnic armies, identity, and post-conflict reconstruction. Milton Park, Abingdon, Oxon, [England] : Routledge, 2010.

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Chuvikov, Dmitriy. Models and algorithms for reconstruction and examination of emergency events of road accidents based on logical artificial intelligence. 2e éd. ru : INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1220729.

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The purpose of the monograph is to create a methodology, combined expert and simulation models, as well as algorithms and software-modeling tools for reconstruction and examination of accident events for automating decision-making by an expert center employee. The methodology of combining and algorithms of joint work of an expert system based on logical artificial intelligence (mivar approach) and a simulation system for solving problems of reconstruction and examination of road accidents are developed; model reconstruction and examination of the accident in the formalism of the knowledge base bipartite oriented mivar nets, including analysis formulas braking qualities of the vehicle, determining the speed of a car's performance in terms of specific DTS, the formula for calculating different occasions: - slip car when braking, driving on curved sections of the road, hitting a car on the pedestrian in uniform motion and unlimited visibility; a method of generation of interfaces for designer expert systems based on the concept of mivar approach; special software in the form of expert systems "Analysis of road accident" in order to reduce the complexity of the process of calculating the disputed accidents, errors in the calculation and improve the accuracy and objectivity of the results obtained and the speed and quality of the calculations. It can be useful to specialists of expert institutions, insurance companies, educational institutions in the field of expertise, as well as unmanned vehicles in terms of objective analysis and examination of road accidents.
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1962-, Al-Harithy Howayda, dir. Lessons in post-war reconstruction : Case studies from Lebanon in the aftermath of the 2006 war. New York : Routledge, 2010.

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1962-, Al-Harithy Howayda, dir. Lessons in post-war reconstruction : Case studies from Lebanon in the aftermath of the 2006 war. New York : Routledge, 2010.

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Chapitres de livres sur le sujet "CAD reconstruction"

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Heinz, Siegfred. « Surface reconstruction and variable offset ». Dans CAD Systems Development, 199–206. Berlin, Heidelberg : Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60718-9_14.

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Afyouni, Andrew Shea, Aurus Dourado et Zhamshid Okhunov. « 3D Reconstruction and CAD Models ». Dans Anatomy for Urologic Surgeons in the Digital Era, 21–33. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-59479-4_2.

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Sapidis, Nickolas S. « Variable-Order Surface Reconstruction Through Region Growing ». Dans CAD Systems Development, 207–18. Berlin, Heidelberg : Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60718-9_15.

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Buonamici, Francesco, Monica Carfagni, Rocco Furferi, Lapo Governi et Yary Volpe. « CAD Reconstruction : A Study on Reverse Modelling Strategies ». Dans Lecture Notes in Mechanical Engineering, 165–76. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-31154-4_15.

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Bouras, Abdelaziz, Behzad Shariat, Eliane Perna et Sebti Foufou. « Surface Reconstruction Based on a Descriptive Approach ». Dans CAD Tools and Algorithms for Product Design, 194–210. Berlin, Heidelberg : Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04123-9_13.

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Motavalli, Saeid, et Bopaya Bidanda. « On the Applications of Part Image Reconstruction Systems in Automated Manufacturing ». Dans CAD/CAM Robotics and Factories of the Future ’90, 406–11. Berlin, Heidelberg : Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-58214-1_62.

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Motavalli, Saeid, et Bopaya Bidanda. « On the Applications of Part Image Reconstruction Systems in Automated Manufacturing ». Dans CAD/CAM Robotics and Factories of the Future ’90, 990–95. Berlin, Heidelberg : Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-85838-3_129.

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Timofeev, Gennady, Olga Egorova et Ilya Grigorev. « Applying Modern CAD Systems to Reconstruction of Old Design ». Dans New Trends in Mechanism and Machine Science, 323–31. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44156-6_33.

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Lauria, Adele. « Computer Aided Detection (CAD) Systems for Mammography and the Use of GRID in Medicine ». Dans Molecular Imaging : Computer Reconstruction and Practice, 161–73. Dordrecht : Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8752-3_9.

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Mei, Zhang, et Wen Jinghua. « Mickey Mouse 3D CAD Model Reconstruction Based on Reverse Engineering ». Dans Recent Developments in Intelligent Systems and Interactive Applications, 282–89. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-49568-2_40.

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Actes de conférences sur le sujet "CAD reconstruction"

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Rosen, David W. « Multi-Scale, Heterogeneous CAD Representation for Metal Alloy Microstructures ». Dans ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34563.

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Most heterogeneous CAD representations in the literature represent materials using a volume fraction vector, which may not by physically realizable or meaningful. In contrast, the multi-scale, heterogeneous CAD representation presented here models materials using their microstructure. For the specific metal alloys of interest in this work, the material model is a probabilistic model of grain characteristics, represented as cumulative distribution functions. Several microstructure reconstruction algorithms are presented that enable different alloy grain structures to be reconstructed in a part model. Reconstructions can be performed at any desired size scale, illustrating the multi-scale capability of the representation. A part rendering algorithm is presented for displaying parts with their material microstructures. The multi-scale, heterogeneous CAD representation is demonstrated on two Inconel alloys and is shown to be capable of faithfully reconstructing part representations consistent with the probabilistic grain models.
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Denker, Klaus, Daniel Hagel, Jakob Raible, Georg Umlauf et Bernd Hamann. « On-Line Reconstruction of CAD Geometry ». Dans 2013 International Conference on 3D Vision (3DV). IEEE, 2013. http://dx.doi.org/10.1109/3dv.2013.28.

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Qie, Yifan, et Nabil Anwer. « Invariance Class-based Surface Reconstruction using Deep Learning ». Dans CAD'22. CAD Solutions LLC, 2022. http://dx.doi.org/10.14733/cadconfp.2022.350-354.

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Liu, Xueshu. « Functional Surface Reconstruction from Unorganized Noisy Point Clouds ». Dans CAD'14. CAD Solutions LLC, 2014. http://dx.doi.org/10.14733/cadconfp.2014.84-86.

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Lagace, Patrick, Claude Lepage, Wagdi Habashi et Michel Fortin. « Automatic CAD Reconstruction for CAD-Based Anisotropic Mesh Smoothing and Adaptation ». Dans 42nd AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina : American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-85.

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Lechelek, L., S. Gerbaud, R. Zrour, M. Naudin, C. Guillevin et S. Horna. « Comparative Study of 3D Reconstruction Methods for Medical Imaging ». Dans CAD'21. CAD Solutions LLC, 2021. http://dx.doi.org/10.14733/cadconfp.2021.198-202.

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Marzola, Antonio, Lapo Governi, Lorenzo Genitori, Federico Mussa, Yary Volpe et Rocco Furferi. « A Semi-Automatic Hybrid Approach for Defective Skulls Reconstruction ». Dans CAD'19. CAD Solutions LLC, 2019. http://dx.doi.org/10.14733/cadconfp.2019.54-58.

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Wang, Wei, ZhenYu Guo, JiaMing Yang et Pai Zheng. « Segmentation and Local Reconstruction of Turbine Blade Point Cloud ». Dans CAD'20. CAD Solutions LLC, 2020. http://dx.doi.org/10.14733/cadconfp.2020.193-198.

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Bhatt, Amba, Archak Goel, Ujjaval Gupta et Stuti Awasthi. « Reconstruction of Branched Surfaces : Experiments with Disjoint B-spline Surface ». Dans CAD'14. CAD Solutions LLC, 2014. http://dx.doi.org/10.14733/cadconfp.2014.13-15.

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De Backer, Wout, Max Kirkpatrick, Ramy Harik et Joshua Tarbutton. « Automated Reconstruction of Continuous Robotic Motion from G-Code Patterns ». Dans CAD'16. CAD Solutions LLC, 2016. http://dx.doi.org/10.14733/cadconfp.2016.316-321.

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Rapports d'organisations sur le sujet "CAD reconstruction"

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Iffat, Idris. Anti-corruption Measures in Post-conflict Reconstruction. Institute of Development Studies, juin 2022. http://dx.doi.org/10.19088/k4d.2022.082.

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Corruption risks in post-conflict reconstruction are high, notably due to the typically large influx of international aid coupled with weak/illegitimate governments and low state capacity. Combatting corruption in post-conflict settings is vital in the short- and medium-term to promote development and growth, and in the long-term to prevent renewed conflict. Anti-corruption efforts can focus on strengthening the rule of law; public financial management; civil service reform to promote meritocratic hiring, proper training and proper remuneration; promoting transparency and accountability – on the part of both donors as well as recipient governments; and promoting external accountability mechanisms of the media and civil society.
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Meyer, Robin D. Provincial Reconstruction Teams Aren't for Everyone : Where and When PRTs can be a Useful Mechanism for SSTR Operations. Fort Belvoir, VA : Defense Technical Information Center, octobre 2008. http://dx.doi.org/10.21236/ada494615.

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Striessnig, Erich, Claudia Reiter et Anna Dimitrova. Global improvements in Years of Good Life since 1950. Verlag der Österreichischen Akademie der Wissenschaften, juin 2021. http://dx.doi.org/10.1553/populationyearbook2021.res1.2.

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Human well-being at the national aggregate level is typically measured by GDP per capita, life expectancy or a composite index such as the HDI. A more recent alternative is the Years of Good Life (YoGL) indicator presented by Lutz et al. (2018; 2021). YoGL represents a refinement of life expectancy in which only those person-years in a life table are counted that are spent free from material (1), physical (2) or cognitive limitations (3), while being subjectively perceived as satisfying (4). In this article, we present the reconstruction of YoGL to 1950 for 140 countries. Since life expectancy – as reported by the UN World Population Prospects in fiveyearly steps – forms the basis of our reconstruction, the presented dataset is also available on a five-yearly basis. In addition, like life expectancy, YoGL can be flexibly calculated for different sub-populations. Hence, we present separate YoGL estimates for women and men. Due to a lack of data, only the material dimension can be reconstructed based directly on empirical inputs since 1950. The remaining dimensions are modelled based on information from the more recent past.
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Torres, Marissa, Norberto Nadal-Caraballo et Alexandros Taflanidis. Rapid tidal reconstruction for the Coastal Hazards System and StormSim part II : Puerto Rico and U.S. Virgin Islands. Engineer Research and Development Center (U.S.), août 2021. http://dx.doi.org/10.21079/11681/41482.

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This Coastal and Hydraulics Engineering Technical Note (CHETN) describes the continuing efforts towards incorporating rapid tidal time-series reconstruction and prediction capabilities into the Coastal Hazards System (CHS) and the Stochastic Storm Simulation System (StormSim). The CHS (Nadal-Caraballo et al. 2020) is a national effort for the quantification of coastal storm hazards, including a database and web tool (https://chs.erdc.dren.mil) for the deployment of results from the Probabilistic Coastal Hazard Analysis (PCHA) framework. These PCHA products are developed from regional studies such as the North Atlantic Coast Comprehensive Study (NACCS) (Nadal-Caraballo et al. 2015; Cialone et al. 2015) and the ongoing South Atlantic Coast Study (SACS). The PCHA framework considers hazards due to both tropical and extratropical cyclones, depending on the storm climatology of the region of interest. The CHS supports feasibility studies, probabilistic design of coastal structures, and flood risk management for coastal communities and critical infrastructure. StormSim (https://stormsim.erdc.dren.mil) is a suite of tools used for statistical analysis and probabilistic modeling of historical and synthetic storms and for stochastic design and other engineering applications. One of these tools, the Coastal Hazards Rapid Prediction System (CHRPS) (Torres et al. 2020), can perform rapid prediction of coastal storm hazards, including real-time hurricane-induced flooding. This CHETN discusses the quantification and validation of the Advanced Circulation (ADCIRC) tidal constituent database (Szpilka et al. 2016) and the tidal reconstruction program Unified Tidal analysis (UTide) (Codiga 2011) in the Puerto Rico and U.S. Virgin Islands (PR/USVI) coastal regions. The new methodology discussed herein will be further developed into the Rapid Tidal Reconstruction (RTR) tool within the StormSim and CHS frameworks.
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Snyder, S. F., W. T. Farris, B. A. Napier, T. A. Ikenberry et R. O. Gilbert. Parameters used in the environmental pathways and radiological dose modules (DESCARTES, CIDER, and CRD codes) of the Hanford Environmental Dose Reconstruction Integrated Codes (HEDRIC). Office of Scientific and Technical Information (OSTI), mai 1994. http://dx.doi.org/10.2172/10158073.

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Carrera-Marquis, Daniela, Marisela Canache et Franklin Espiga. Open configuration options Hurricane Dorian “AT-A-GLANCE” Assessment of the Effects and Impacts DALA Visualization. Inter-American Development Bank, mars 2022. http://dx.doi.org/10.18235/0004056.

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fter hurricane Dorian and the provision of initial emergency services, the government of The Bahamas asked the Inter-American Development Bank (IDB) to assess the resulting damage, losses and additional costs. The IDB requested the United Nations Economic Commission for Latin America and the Caribbean (ECLAC) for technical assistance with the assessment. The report, Assessment of the Effects and Impacts of HURRICANE DORIAN in THE BAHAMAS, published in August 2020 presents the results in detail (1). It also brings recommendations to guide a resilient reconstruction process that can reduce vulnerabilities and risks for the population and for every sector of the economy. Since 2015, it is the fourth assessment in this kind conducted by IDB and ECLAC in The Bahamas. The Bahamas Country Office Preparedness Recovery and Reconstruction Team (P2RCT) has prepared a visual summary of the Assessment of the Effects and Impacts of HURRICANE DORIAN in THE BAHAMAS. This brief will facilitate the dissemination and awareness of key information related to The Bahamas vulnerability to the effects of natural disasters, as well as emphasize the need to strengthen efforts in policy management and disaster risk management (DRM) to achieve greater levels of resilience and risk mitigation. The HURRICANE DORIAN “AT-A-AGLANCE” Assessment of the Effects and Impacts DALA Visualization document, collects economic data and the most relevant aspects of the work carried out during the field sessions, with IDB and ECLAC experts analysis and recommendations.
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Huang, Haohang, Erol Tutumluer, Jiayi Luo, Kelin Ding, Issam Qamhia et John Hart. 3D Image Analysis Using Deep Learning for Size and Shape Characterization of Stockpile Riprap Aggregates—Phase 2. Illinois Center for Transportation, septembre 2022. http://dx.doi.org/10.36501/0197-9191/22-017.

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Riprap rock and aggregates are extensively used in structural, transportation, geotechnical, and hydraulic engineering applications. Field determination of morphological properties of aggregates such as size and shape can greatly facilitate the quality assurance/quality control (QA/QC) process for proper aggregate material selection and engineering use. Many aggregate imaging approaches have been developed to characterize the size and morphology of individual aggregates by computer vision. However, 3D field characterization of aggregate particle morphology is challenging both during the quarry production process and at construction sites, particularly for aggregates in stockpile form. This research study presents a 3D reconstruction-segmentation-completion approach based on deep learning techniques by combining three developed research components: field 3D reconstruction procedures, 3D stockpile instance segmentation, and 3D shape completion. The approach was designed to reconstruct aggregate stockpiles from multi-view images, segment the stockpile into individual instances, and predict the unseen side of each instance (particle) based on the partial visible shapes. Based on the dataset constructed from individual aggregate models, a state-of-the-art 3D instance segmentation network and a 3D shape completion network were implemented and trained, respectively. The application of the integrated approach was demonstrated on re-engineered stockpiles and field stockpiles. The validation of results using ground-truth measurements showed satisfactory algorithm performance in capturing and predicting the unseen sides of aggregates. The algorithms are integrated into a software application with a user-friendly graphical user interface. Based on the findings of this study, this stockpile aggregate analysis approach is envisioned to provide efficient field evaluation of aggregate stockpiles by offering convenient and reliable solutions for on-site QA/QC tasks of riprap rock and aggregate stockpiles.
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Schmidt-Sane, Megan, Tabitha Hrynick, Erica Nelson et Tom Barker. Mutual Learning for Policy Impact : Insights from CORE. Adapting research methods in the context of Covid-19. Institute of Development Studies (IDS), décembre 2021. http://dx.doi.org/10.19088/core.2021.008.

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On 25 November 2021, the CORE Knowledge Translation Services team at the Institute of Development Studies, UK, hosted an online clinic session to facilitate the sharing of experiences and mutual learning on how CORE projects have or can adapt their research activities in the context of the Covid-19 pandemic. The clinic was attended by 22 CORE members from 12 projects and featured contributions from two CORE projects: The Youth Question in Africa: Impact, Response and Protection Measures in the IGAD Region and A New Digital Deal for an Inclusive Post-Covid-19 Social Compact: Developing Digital Strategies for Social and Economic Reconstruction. This learning guide captures the practical insights and advice from the event, to help inform the practice of participants and other projects across the portfolio.
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Herbert, Sian. Approaches to Stabilisation. Institute of Development Studies, avril 2022. http://dx.doi.org/10.19088/k4d.2022.068.

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This rapid literature review explores how approaches to stabilisation have varied by the donor, local context, and over time. While this paper was framed around a research question on the “Area Based Stabilisation” (ABS) approach, this term is barely used in the literature. Therefore, it is not possible to define an ABS approach or compare it to other approaches. However, there is considerable literature on approaches to stabilisation more generally, with some comparative analysis of approaches by donors and how these are evolving according to the context and some illustrative lessons from their application. As per the question from FCDO, this query also draws on analyses of the following case examples: Regional Strategy for the Stabilization, Recovery and Resilience (RSS) of the Boko Haram-affected areas of the Lake Chad Basin Region; Helmand Provincial Reconstruction Team (PRT) in Afghanistan; Area Based Recovery Approach (ABRA) in Iraq; and the Stabilisation Facility for Libya (SFL). As the Stabilisation Unit (2019) emphasises, as the purpose of engaging in stabilisation activities, and the political and conflict contexts, vary so much, it is only possible to draw out some generic/illustrative lessons across cases.
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Hastings, Rachel, Meghan Quinn, Andrew Bernier et Craig Rutland. A review of airfield pavement drainage guidance. Engineer Research and Development Center (U.S.), octobre 2022. http://dx.doi.org/10.21079/11681/45720.

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Inadequate drainage conditions may lead to airfield pavement deterioration. A thorough review of existing pavement drainage guidance and literature was necessary to identify key drainage considerations such as surface drainage infrastructure, pavement drainage layer thickness, use of geotextiles, and performance in freeze–thaw climates. Existing airport drainage guidance is provided by the Unified Facilities Criteria (UFC), the Federal Aviation Administration (FAA), and the Tri-Service Pavements Working Group (TSPWG). Pavement drainage guidance is buried within regulations for pavement de-sign and can, at times, be split awkwardly to accommodate pavement guidance that is split between rigid and flexible designs. Most airfield pavement guidance has been adapted from guidance for highway design. Most guidance is also strength based, with little to no attention paid to material erodibility (a potential cause of pavement deterioration). This review also found very little reference to repairing, rather than completely replacing, damaged subsurface drainage layers. Further research is needed to assess the use of geofabrics and moisture in freeze–thaw conditions on drainage layers and surface structures. With further research, the retrofit and repair of existing subpavement systems might become a more economical solution to drainage-caused pavement deterioration issues than complete reconstruction.
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