Academic literature on the topic 'Fixed arches'

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Journal articles on the topic "Fixed arches"

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Pi, Y. L. "Elastic flexural-torsional buckling of fixed arches." Quarterly Journal of Mechanics and Applied Mathematics 57, no. 4 (November 1, 2004): 551–69. http://dx.doi.org/10.1093/qjmam/57.4.551.

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Xi, Kuan Tang, Jin Li, Tie Gang Zhou, and Qing Xing Xu. "Out-of-Plane Stability Analysis of U-Section Pin-End Steel Arch." Applied Mechanics and Materials 351-352 (August 2013): 169–73. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.169.

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Two kinds of finite element model which can reflect the effects of different loading positions were constructed with Beam 188 and Shell 181. Effects of different restraints, load models and rise-span ratios on out-of-plane buckling were studied by comparing results of fixed arches with that of pin-end arches under three loading models. It is conservative to design by employing results of radial loading. As for out-of-plane stability, pin-end arches are better than fixed arches when rise-span ratio is big. Compared with U-section pin-end circular arches with diaphragm, those with batten plates
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Xi, Kuan Tang, Jin Li, Tie Gang Zhou, and Tao Lin. "Out-of-Plane Stability Analysis of I-Section Steel Arch." Applied Mechanics and Materials 405-408 (September 2013): 781–85. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.781.

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Finite element model which can reflect the effects of different loading positions were constructed with Beam 188. Effects of different restraints, load models and rise-span ratios on out-of-plane buckling were studied by comparing results of fixed arches with that of pin-end arches under three loading models. It is conservative to design by employing results of radial loading. For ideal restraints, out-of-plane stability of pin-end arches is better than fixed arches when rise-span ratio is big. Effects of different loading positions on out-of-plane buckling were studied. Buckling loads of arch
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Liu, Airong, Zhicheng Yang, Hanwen Lu, Jiyang Fu, and Yong-Lin Pi. "Experimental and analytical investigation on the in-plane dynamic instability of arches owing to parametric resonance." Journal of Vibration and Control 24, no. 19 (August 11, 2017): 4419–32. http://dx.doi.org/10.1177/1077546317726210.

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When an arch is subjected to a periodic load, it may lose in-plane stability dynamically owing to parametric resonance. Previous investigations have been concentrated on in-plane dynamic buckling of pin-ended shallow arches. However, in engineering practice, fixed arches with different rise-to-span ratios are often encountered. Little research on in-plane dynamic instability of deep fixed arches has been reported in the literature. This paper is concerned with experimental and analytical investigations for in-plane dynamic instability of fixed circular arches with rise-to-span ratios 1/8–1/2 u
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Sabale, Aditya, and K. V. Nagendra Gopal. "Nonlinear In-Plane Stability of Deep Parabolic Arches Using Geometrically Exact Beam Theory." International Journal of Structural Stability and Dynamics 18, no. 01 (January 2018): 1850006. http://dx.doi.org/10.1142/s0219455418500062.

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In this paper, we investigate the in-plane stability and post-buckling response of deep parabolic arches with high slenderness ratios subjected to a concentrated load on the apex, using the finite element implementation of a geometrically exact rod model and the cylindrical version of the arc-length continuation method enabled with pivot-monitored branch-switching. The rod model used here includes geometrically exact kinematics of the cross-section, exact kinetics, and a linear elastic constitutive law; and advantageously employs quaternion parameters to treat the cross-sectional rotations and
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Song, Xi, and Shi Rong Li. "Nonlinear Stability of Fixed-Fixed FGM Arches Subjected to Mechanical and Thermal Loads." Advanced Materials Research 33-37 (March 2008): 699–706. http://dx.doi.org/10.4028/www.scientific.net/amr.33-37.699.

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Based on Kirchhoff’s assumption of straight normal line of beams and considering the effects of the axial elongation, the initial curvature and the stretching-bending coupling on the arch deformation, geometrically nonlinear governing equations of functionally graded arch subjected to mechanical and thermal loads are derived. In the analysis, it is assumed that the material properties of the arch vary through the thickness as a power function. As a numerical example, the critical buckling load and the corresponding mode shapes of a semicircle arch, with both of the ends fixed, subjected to nor
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Pi, Yong-Lin, and Mark Andrew Bradford. "Nonlinear elastic analysis and buckling of pinned–fixed arches." International Journal of Mechanical Sciences 68 (March 2013): 212–23. http://dx.doi.org/10.1016/j.ijmecsci.2013.01.018.

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Cai, JianGuo, Jian Feng, Yao Chen, and LiFeng Huang. "In-plane elastic stability of fixed parabolic shallow arches." Science in China Series E: Technological Sciences 52, no. 3 (February 24, 2009): 596–602. http://dx.doi.org/10.1007/s11431-009-0057-9.

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Albati, Mohammed, Riham Showlag, Alaa Akili, Halah Hanafiyyah, Hanadi AlNashri, Waad Aladwani, Ghaida Alfarsi, Mashael Alharbi, and Abdulrahman Almutairi. "Space maintainers application, indication and complications." International Journal Of Community Medicine And Public Health 5, no. 11 (October 25, 2018): 4970. http://dx.doi.org/10.18203/2394-6040.ijcmph20184251.

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Dental space maintenance is essential in cases of premature loss of primary dentition to prevent malposition, supra-eruption, impaction, or crowding of the developing permanent teeth. Many types of space maintainers are available and each type is specifically designated for particular indications. Space maintainers have many classifications according to their design, their fixation pattern, their position, and their site. They can be fixed, semi-fixed, or removable, with or without loops, wires, and/or bands, unilateral or bilateral, and are placed on mandibular or maxillary arches. The most c
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Bradford, M. A., and Y. L. Pi. "Flexural–torsional buckling of fixed steel arches under uniform bending." Journal of Constructional Steel Research 62, no. 1-2 (January 2006): 20–26. http://dx.doi.org/10.1016/j.jcsr.2005.02.012.

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Dissertations / Theses on the topic "Fixed arches"

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Mill, Andrew John. "Ultimate load analysis of fixed arches." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25121.

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The advent of Limit States Design has created the necessity for a better understanding of how structures behave when loaded beyond first local yielding and up to collapse. Because the problem of determining the ultimate load capacity of structures is complicated by geometric and material non-linearity, a closed form solution for anything but the simplest of structure is not practical. With this as motivation, the ultimate capacity of fixed arches is examined in this thesis. The results are presented in the form of dimensionless collapse curves. The form of these curves is analogous to column c
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Liu, Xinpei Civil &amp Environmental Engineering Faculty of Engineering UNSW. "Nonlinear in-plane behaviour of fixed arches under thermal loading." Awarded by:University of New South Wales. School of Civil and Environmental Engineering, 2006. http://handle.unsw.edu.au/1959.4/27236.

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This thesis presents the nonlinear in-plane behaviour of circular fixed arches subjected to thermal loading only. Due to the nonlinear prebuckling behaviour of arches and its effects, classical buckling theory which is founded on geometric prebuckling linearity can not predict the in-plane buckling of arches accurately. Based on a nonlinear formulation of the strain and displacement relationship and considering constant thermal distributions only, virtual work formulations are used to establish the differential equations of in-plane equilibrium and the statical boundary conditions, from which
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Su, Po-Hua, and 蘇柏華. "Optimization of Cassette-Fixed Tool for Emergency Patient Radiographing Zygomatic Arches via Taguchi Methodology." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/17155048250515263211.

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碩士<br>中臺科技大學<br>醫學影像暨放射科學系暨研究所<br>104<br>The Optimization of the cassette-fixed tool for emergency patient radiographing zygomatic arches via Taguchi analysis was accomplished in this work. Radiographers in dealing of the patients delivered from urgently surgical accidents were strongly recommended for not removing the cervical collar to suppress the secondary injury risk. Therefore, the conventional suggestion for acquiring optimal image quality of cervical vertebra became inappropriate in practical cases. A revised technique for fulfilling the critical case was proposed according to the Tagu
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Books on the topic "Fixed arches"

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E, Hull Robert, Genealogical Association of Sacramento, and Sacramento Archives and Museum Collection Center., eds. Sacramento County marriage licenses and certificates, 1861-1937: Licenses and certificates of marriage filed by the Sacramento County Recorder. [Sacramento, Calif.]: Genealogical Association of Sacramento, 1995.

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Butler, Lynn Edwards. Bach’s Report on Johann Scheibe’s Organ for St. Paul’s Church, Leipzig. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252040191.003.0001.

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This chapter revisits Johann Sebastian Bach’s 1717 report on Johann Scheibe’s organ for St. Paul’s Church at the University of Leipzig. On December 16, 1717, Bach examined the organ “partly newly built and partly renovated” by Scheibe for St. Paul’s Church. Bach’s report, written the following day, is deemed successful by contemporary sources. Scheibe himself said the organ was “found [to be] free of even the smallest major defect,” to which the University agreed. However, Gottfried Silbermann’s early twentieth-century biographer Ernst Flade claimed that Scheibe’s organ was a mediocre instrume
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Book chapters on the topic "Fixed arches"

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Vo, D., and P. Nanakorn. "Large Displacement Analysis of Pinned-Fixed Circular Arches with Different Rise-to-Span Ratios Using an Isogeometric Approach." In Lecture Notes in Civil Engineering, 951–60. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8079-6_89.

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Frey, Johannes, Denis Streitmatter, Fabian Götz, Sebastian Hellmann, and Natanael Arndt. "DBpedia Archivo: A Web-Scale Interface for Ontology Archiving Under Consumer-Oriented Aspects." In Semantic Systems. In the Era of Knowledge Graphs, 19–35. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59833-4_2.

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Abstract While thousands of ontologies exist on the web, a unified system for handling online ontologies – in particular with respect to discovery, versioning, access, quality-control, mappings – has not yet surfaced and users of ontologies struggle with many challenges. In this paper, we present an online ontology interface and augmented archive called DBpedia Archivo, that discovers, crawls, versions and archives ontologies on the DBpedia Databus. Based on this versioned crawl, different features, quality measures and, if possible, fixes are deployed to handle and stabilize the changes in the found ontologies at web-scale. A comparison to existing approaches and ontology repositories is given .
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Mahdi, Tariq. "Seismic Vulnerability of Arches, Vaults and Domes in Historical Buildings." In Civil and Environmental Engineering, 101–44. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9619-8.ch004.

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Arches, vaults and domes are common features in the cultures of old civilizations. They were usually made of sun-dried bricks, fired bricks or stones with different types of mortar. The majority of these components are vulnerable to seismic effects. Furthermore, the thrust actions transmitted by arches, vaults and domes to walls and piers usually cause damage to the supporting walls or piers. The present chapter discusses the structural behaviour and performance of these elements in past earthquakes and reviews the numerical models used for the seismic assessment of these elements. Furthermore, different damage assessment approaches are reviewed and suggestions are made on further research.
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Mahdi, Tariq. "Seismic Vulnerability of Arches, Vaults and Domes in Historical Buildings." In Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures, 401–47. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8286-3.ch014.

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Arches, vaults and domes are common features in the cultures of old civilizations. They were usually made of sun-dried bricks, fired bricks or stones with different types of mortar. The majority of these components are vulnerable to seismic effects. Furthermore, the thrust actions transmitted by arches, vaults and domes to walls and piers usually cause damage to the supporting walls or piers. The present chapter discusses the structural behaviour and performance of these elements in past earthquakes and reviews the numerical models used for the seismic assessment of these elements. Furthermore, different damage assessment approaches are reviewed and suggestions are made on further research.
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Fugini, Mariagrazia, Mirko Cesarini, and Mario Mezzanzanica. "Analysis-Sensitive Conversion of Administrative Data into Statistical Information Systems." In Cases on Public Information Management and E-Government Adoption, 186–218. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0981-5.ch008.

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This chapter presents a case study concerning the development of a Statistical Information System (SIS) out of data coming from administrative archives of the PAs. Such archives are a rich source of up to date information, but an attempt to use them as sources for statistical analysis reveals errors and incompatibilities among each other that do not permit their usage as a statistical and decision support basis. These errors and incompatibilities are usually undetected during administrative use, since they do not affect their day-by-day use in the PAs; however they need to be fixed before performing any further aggregate analysis. The reader is engaged with the basic aspects involved in building a SIS out of administrative data, such as design of an integration model for different and heterogeneous data sources, improvement of the overall data quality, removal of errors that might impact on the correctness of statistical analysis, design of a data warehouse for statistical analysis, and design of a multidimensional database to develop indicators for decision support. Finally, some examples are presented concerning the information that can be obtained by making use of a SIS constructed out of Registry and Income Office archives.
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Hunt, Arnold. "The Early Modern Secretary and the Early Modern Archive." In Archives and Information in the Early Modern World. British Academy, 2018. http://dx.doi.org/10.5871/bacad/9780197266250.003.0005.

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It was the secretary who handled the delivery of incoming letters, drafted and copied outgoing correspondence, filed papers for retention and, quite literally, held the keys to his master's secrets. This chapter reviews the current state of scholarship on the early modern secretary and asks what we can learn from the material traces that these invisible technicians left on the documents that passed through their hands. Secretaries sought to differentiate themselves from mere clerks by developing a more sophisticated range of techniques for the handling and retrieval of written documents, and the rise of the secretary as a distinct profession was therefore accompanied by the emergence of a new technology of the archive.
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Wagner, Delphine, Yves Remond, Yves Bolender, Pascal Laheurte, and Daniel George. "Mechanical Characterization of Orthodontic Archwires in a Pseudo In-Vivo Context." In Stem Cells and Regenerative Medicine. IOS Press, 2021. http://dx.doi.org/10.3233/bhr210012.

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Orthodontic fixed appliances are used to correct dental malocclusions by optimizing tooth movement and associated bone remodelling. Currently, orthodontic archwires made of shape memory alloys (SMAs) are widely used to initiate these treatments. We conduct experiments on SMA wires in pseudo in-vivo conditions, complementary to ISO standards, to assess the influence of temperature and humidity and to highlight their expected mechanical behaviour for clinical use. For this, an in-house built measurement device was developed to carry out experiments at controlled temperatures (21°C and 35°C) and in dry or wet conditions (artificial saliva). The dental arch was reproduced by 3D printing. The results show that the temperature has a major influence on the delivered forces whereas wet or dry conditions seem to have less impact. Also, we emphasize that at 35°C (in mouth conditions), in wet or dry conditions, SMAs superelasticity is only effective for displacements up to about 3 mm when an entire dental arch is considered.
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Furtado, Gustavo Procopio. "Epilogue." In Documentary Filmmaking in Contemporary Brazil, 203–8. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190867041.003.0008.

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This epilogue briefly discusses the interconnections between the three parts of the book and considers additional examples of recent films that deal with contemporary issues of social justice and post-dictatorship memory while maintaining an engagement with questions of the archive. As this book has explored in several contexts, Brazilian documentaries engage critically with archives while performing archival functions of their own—producing records of what would otherwise be lost and incorporating fragments of the present and the past that are preserved for the future. At the same time, films can be the vehicle for the de-archivization of documents and materials that are unearthed from unseen records and placed into public circulation as well as given new futures through their filmic inclusion. Functioning in liminal and transitional terrains, the documentary’s interaction with concepts of the archive and archival materials allows it to reflect on and intervene in the distribution of visibilities and invisibilities, centers and margins, silences and speech, forms of authority and forms of resistance, living memory and its preservation in fixed forms.
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Cohen-Levy, DDS, Julia. "Orthodontic Monitoring and Case Finishing With the T-Scan System." In Advances in Medical Technologies and Clinical Practice, 1057–124. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9254-9.ch015.

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This chapter reviews T-Scan use in orthodontics from diagnosis to case finishing, and then in retention, while defining normal T-Scan recording parameters for orthodontically-treated subjects versus untreated subjects. T-Scan use in the case-finishing process is also described, which compensates for changes in the occlusion that occur during “post-orthodontic settling,” as teeth move freely within the periodontium to find an equilibrium position when the orthodontic appliances have been removed. T-Scan implementation is necessary because, often, despite there being a post treatment, visually “perfect” angle's Class I relationship established with the orthodontic treatment, ideal occlusal contacts do not result solely from tooth movement. Creating simultaneous and equal force occlusal contacts following fixed appliance removal can be accomplished using T-Scan data to optimize the end-result occlusal contact pattern. The T-Scan software's force distribution and timing indicators (the two- and three-dimensional force views, force percentage per tooth and arch half, the center of force trajectory and icon, the occlusion time [OT], and the disclusion time [DT]), all aid the Orthodontist in obtaining an ideal occlusal force distribution during case-finishing. Fortunately, most orthodontic cases remain asymptomatic during and after tooth movement. However, an occlusal force imbalance or patient discomfort may occur along with the malocclusion that needs orthodontic treatment. Symptomatic cases require special documentation at the baseline, and careful monitoring throughout the entire orthodontic process. The clinical use of T-Scan in these “fragile” cases of patient muscle in-coordination, mandibular deviation, atypical pain, and/or TMJ idiopathic arthritis, are illustrated by several case reports. The presented clinical examples highlight combining T-Scan data recorded during case diagnosis, tooth movement, and in case finishing, with patients that underwent lingual orthodontics and orthognathic surgery, orthodontic treatment using clear aligners, or conventional fixed treatment with a camouflage treatment plan, which require special occlusal finishing (when premolars are extracted in only one arch).
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Cohen-Levy, DDS, MS, PhD, Julia. "Orthodontic T-Scan Applications." In Handbook of Research on Computerized Occlusal Analysis Technology Applications in Dental Medicine, 523–61. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-6587-3.ch011.

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This chapter reviews T-Scan use in Orthodontics, defines normal T-Scan recordings for orthodontically treated subjects versus untreated subjects, and explains T-Scan use in the case-finishing process. After orthodontic appliance removal changes in the occlusion result from “settling,” because teeth can move freely within the periodontium. Despite a post treatment, visually “perfect” Angle's Class I relationship, ideal occlusal contacts often do not result solely from tooth movement. Creating simultaneous and equal contacts following fixed appliance removal can be accomplished using T-Scan data to optimize the end-result occlusal contact pattern. The software's force distribution and timing indicators (the 2 and 3-Dimensional ForceViews, force percentage per tooth and arch half, the Center of Force, and the Occlusion and Disclusion Times) aid in obtaining an ideal occlusal force distribution during case-finishing. Several case reports highlight combining lingual orthodontic treatment with Orthognathic surgery, where each presented case utilized T-Scan data during active treatment and retention.
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Conference papers on the topic "Fixed arches"

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Dou, Chao, Yan-Lin Guo, and Si-Yuan Zhao. "Out-of-Plane Elastic Buckling Load of Fixed Circular Arches in Uniform Compression." In 10th Pacific Structural Steel Conference (PSSC 2013). Singapore: Research Publishing Services, 2013. http://dx.doi.org/10.3850/978-981-07-7137-9_029.

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Toczkiewicz, Robert, Jan Biliszczuk, and Marco Teichgraeber. "Large Bridges Recently Built in Poland." In IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0889.

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&lt;p&gt;The road and railway infrastructure in Poland has been intensively developed and modernized for the last years. Around 300 new bridges are built annually. Among the new structures there is a group of modern long span bridges.&lt;/p&gt; &lt;p&gt;This paper presents examples of selected, most interesting large road bridges built in recent years in Poland. The following structures are described:&lt;/p&gt;&lt;ul&gt;&lt;li&gt; &lt;p&gt;two largest extradosed bridges in Europe – with spans exceeding 200 m;&lt;/p&gt;&lt;/li&gt;&lt;li&gt; &lt;p&gt;the largest arch bridge in Poland with 270 m
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van Swaaij, W. P. M. "HEAT AND MASS TRANSFER IN FIXED AND FLUIDIZED BEDS. International Symposium 1984." In Archives of Heat Transfer. Washington: Hemisphere, 1988. http://dx.doi.org/10.1615/ichmt.1988.20thaht.330.

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van Swaaij, W. P. M. "HEAT AND MASS TRANSFER IN FIXED AND FLUIDIZED BEDS. International Symposium 1984." In Archives of Heat Transfer. Connecticut: Begellhouse, 1988. http://dx.doi.org/10.1615/ichmt.1988.aht.330.

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Murray, John J., Harish Mukundan, Apurva Gupta, and Guibog Choi. "Dry Disconnectable Riser System for Low Keel Clearance Floaters." In ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2009. http://dx.doi.org/10.1115/omae2009-79734.

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Fixed structures operating in extreme offshore environments (eg: arctic) have to resist and survive the challenging conditions like large ice forces. On the other hand, the floating systems in such environments benefit from their ability to be evacuated and transported in the event of severe condition. However, such an ice-management scheme requires the moorings and risers to be disconnected in the severe conditions and reconnected during more clement conditions. Among the floater designs typically considered for extreme offshore applications is the Spar. The Spar offers low extreme motion res
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Schaub, R. G., and F. P. Bell. "LIPID ACCUMULATION AND METABOLISM IN CARRAGEENAN-INDUCED GRANULOMAS COMPARED TO BLOOD MONOCYTES AND THE AORTA." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643410.

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Arteries undergoing atherogenic change show an increase in cholesteryl esterifying activity by acylCoA:cholesterol acetyl-transferase (ACAT) and a progressive accumulation of cholesterol esters within monocyte derived foam cells. The study of these factors, however, is limited by the necessity of obtaining artery tissues for analysis. In this study, an in vivo model (Am J Path 118:134 and 120:391, 1985) which permits the analysis of foam cell development without requiring collection of aortas was examined in more detail. New Zealand rabbits (6 each) were either maintained on a 1% cholesterol/p
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Jorgensen, Kris L., Joseph R. Strempek, William J. Arvan, and Raymond H. Schauer. "Use of Numerical Modeling to Compare Over-Fire Air Systems on Stoker-Fired Furnaces." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68348.

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The method by which air is introduced to a furnace is an important aspect of the combustion system. With the demands of more stringent regulations affecting modern combustion systems, numerical modeling has become a valuable tool for design and analysis. Numerical modeling has been used to compare a conventional Controlled Combustion Zone (CCZ™) overfire air system design typically used on stoker-fired furnaces to a more advanced design. The new design involves removing the opposed arches and replacing the numerous small overfire air ports with a smaller number of controlled penetration Precis
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CANN, G., and T. PUGMIRE. "Design of multikilowatt arcjets with high voltage, fixed length, swirl controlled arc discharges." In 22nd Joint Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1986. http://dx.doi.org/10.2514/6.1986-1509.

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Jorquera-Lucerga, Juan José, and Juan Manuel GARCÍA-GUERRERO. "Stiffened Hangers: an Often Overlooked Tool for Conceptual Design of Tied-Arch Footbridges." In Footbridge 2022 (Madrid): Creating Experience. Madrid, Spain: Asociación Española de Ingeniería Estructural, 2021. http://dx.doi.org/10.24904/footbridge2022.049.

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&lt;p&gt;In tied-arch bridges, the way the arch and the deck are connected may become crucial. The deck is usually suspended from hangers made out of steel pinned cables capable of resisting axial forces only. However, a proper structural response, (both in-plane and out-of-plane) may be ensured by fixing and stiffening the hangers in order to resist, additionally, shear forces and bending moments. This paper studies the effect of different pinned and stiffened hanger arrangements on the structural behavior of the tied-arch footbridges, with the intention of providing designers with useful too
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Labanca, Edson L., Elton J. B. Ribeiro, Cipriano J. Medeiros, José A. N. Ferreira, Victor P. Gomes, Renato D. C. Amaral, Oscar J. P. R. Mejia, Leandro P. Basilio, and Celso C. Noronha Neto. "Viability of Fixed Riser Support Structures for Lazy S Riser Configuration in Shallow Waters." In ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/omae2014-24666.

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When in shallow waters, not only the risers, but also the structures and equipment are submitted to different conditions from the ones related to deepwater applications. OGX has developed offshore applications in shallow waters in Campos Basin, Brazil, using a FPSO with Lazy S riser configuration, based on the Midwater Arch systems (MWA). MWA systems are feasible due to OGX application scenario, but they present some disadvantages, such as: high compliance of the buoyant section to the FPSO, large static offset (common issue in shallow waters applications), which makes the MWA carry the risers
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