Academic literature on the topic 'SuDS modelling'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'SuDS modelling.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "SuDS modelling"
1
El Hattab, Mohamad H., Georgios Theodoropoulos, Xin Rong, and Ana Mijic. "Applying the Systems Approach to Decompose the SuDS Decision-Making Process for Appropriate Hydrologic Model Selection." Water 12, no. 3 (February 26, 2020): 632. http://dx.doi.org/10.3390/w12030632.
Full textAbstract:
Sustainable Urban Drainage Systems (SuDS) have gained popularity over the last few decades as an effective and optimal solution for urban drainage systems to cope with continuous population growth and urban sprawl. A SuDS provides not only resilience to pluvial flooding but also multiple other benefits, ranging from amenity improvement to enhanced ecological and social well-being. SuDS modelling is used as a tool to understand these complex interactions and to inform decision makers. Major developments in SuDS modelling techniques have occurred in the last decade, with advancement from simple lumped or conceptual models to very complex fully distributed tools. Several software packages have been developed specifically to support planning and implementation of SuDS. These often require extensive amounts of data and calibration to reach an acceptable level of accuracy. However, in many cases, simple models may fulfil the aims of a stakeholder if its priorities are well understood. This work implements the soft system engineering and Analytic Network Process (ANP) approaches in a methodological framework to improve the understanding of the stakeholders within the SuDS system and their key priorities, which leads to selecting the appropriate modelling technique according to the end-use application.
2
Lenaerts, J. T. M., M. R. van den Broeke, S. J. Déry, G. König-Langlo, J. Ettema, and P. Kuipers Munneke. "Modelling snowdrift sublimation on an Antarctic ice shelf." Cryosphere Discussions 4, no. 1 (February 9, 2010): 121–52. http://dx.doi.org/10.5194/tcd-4-121-2010.
Full textAbstract:
Abstract. In this paper, we estimate the contribution of snowdrift sublimation (SUds) to the surface mass balance at Neumayer, located on the Ekström ice shelf in Eastern Antarctica. A single column version of the RACMO2-ANT model is used as a physical interpolation tool of high-quality radiosonde and surface measurements for a 15 yr period (1993–2007), and combined with a routine to calculate snowdrift sublimation and horizontal snow transport. The site is characterised by a relatively mild, wet and windy climate, so snowdrift is a common phenomenon. The modelled timing and frequency of snowdrift events compares well with observations. This is further illustrated by an additional simulation for Kohnen base, where the timing of snowdrift is realistic, although the modelled horizontal transport is overestimated. Snowdrift sublimation is mainly dependent on wind speed, but also on relative humidity and temperature. During high wind speeds, SUds saturates and cools the air, limiting its own strength. We estimate that SUds removes around 16%±8% of the accumulated snow from the surface. The total sublimation more than triples when snowdrift is considered, although snowdrift sublimation limits sublimation at the surface. SUds shows a strong seasonal cycle, as well as large inter-annual variability. This variability can be related to the variability of the atmospheric conditions in the surface layer.
3
Lenaerts, J. T. M., M. R. van den Broeke, S. J. Déry, G. König-Langlo, J. Ettema, and P. K. Munneke. "Modelling snowdrift sublimation on an Antarctic ice shelf." Cryosphere 4, no. 2 (May 10, 2010): 179–90. http://dx.doi.org/10.5194/tc-4-179-2010.
Full textAbstract:
Abstract. In this paper, we estimate the contribution of snowdrift sublimation (SUds) to the surface mass balance at Neumayer, located on the Ekström ice shelf in Eastern Antarctica. A single column version of the RACMO2-ANT model is used as a physical interpolation tool of high-quality radiosonde and surface measurements for a 15-yr period (1993–2007), and combined with a routine to calculate snowdrift sublimation and horizontal snow transport. The site is characterised by a relatively mild, wet and windy climate, so snowdrift is a common phenomenon. The modelled timing and frequency of snowdrift events compares well with observations. This is further illustrated by an additional simulation for Kohnen base, where the timing of snowdrift is realistic, although the modelled horizontal transport is overestimated. Snowdrift sublimation is mainly dependent on wind speed, but also on relative humidity and temperature. During high wind speeds, SUds saturates and cools the air, limiting its own strength. We estimate that SUds removes around 16%±8% of the accumulated snow from the surface. The total sublimation more than triples when snowdrift is considered, although snowdrift sublimation limits sublimation at the surface. SUds shows a strong seasonal cycle, as well as large inter-annual variability. This variability can be related to the variability of the atmospheric conditions in the surface layer.
4
Lashford, Craig, Susanne Charlesworth, Frank Warwick, and Matthew Blackett. "Modelling the Role of SuDS Management Trains in Minimising Flood Risk, Using MicroDrainage." Water 12, no. 9 (September 13, 2020): 2559. http://dx.doi.org/10.3390/w12092559.
Full textAbstract:
This novel research models the impact that commonly used sustainable drainage systems (SuDS) have on runoff, and compare this to their land take. As land take is consistently cited as a key barrier to the wider implementation of SuDS, it is essential to understand the possible runoff reduction in relation to the area they take up. SuDS management trains consisting of different combinations of detention basins, green roofs, porous pavement and swales were designed in MicroDrainage. In this study, this is modelled against the 1% Annual Exceedance Potential storm (over 30, 60, 90, 120, 360 and 720 min, under different infiltration scenarios), to determine the possible runoff reduction of each device. Detention basins were consistently the most effective regarding maximum runoff reduction for the land they take (0.419 L/s/m2), with porous pavement the second most effective, achieving 0.145 L/s/m2. As both green roofs (20.34%) and porous pavement (6.76%) account for land that would traditionally be impermeable, there is no net-loss of land compared to a traditional drainage approach. Consequently, although the modelled SuDS management train accounts for 34.86% of the total site, just 7.76% of the land is lost to SuDS, whilst managing flooding for all modelled rainfall and infiltration scenarios.
5
Bird, R. J., E. Paterson, J. R. Downie, and B. K. Mable. "Linking water quality with amphibian breeding and development: a case study comparing natural ponds and Sustainable Drainage Systems (SuDS) in East Kilbride, Scotland." Glasgow Naturalist 27, Supplement (2018): 49–66. http://dx.doi.org/10.37208/tgn27s09.
Full textAbstract:
Amphibians have declined due to habitat loss and alteration. Sustainable Drainage Systems (SuDS) provide potential habitat for amphibians in urban landscapes. However, the contaminants they accumulate may cause increased pollutant exposure, and limited research has addressed whether differences in water quality between SuDS and natural ponds might restrict their use by amphibians. This study aimed to explore the effects of water quality on amphibian breeding and development in SuDS and natural ponds in East Kilbride, Scotland. A generalised linear modelling approach was employed to determine sources of variation in common frog (Rana temporaria) breeding and development in relation to pond size, pH, electrical conductivity (EC), chlorophyll and heavy metal concentrations. Key findings included that EC indicative of salt pollution was higher in SuDS than natural ponds, amphibians bred in both site types, but frog spawn clump densities were lower in SuDS, and tadpole development rates were higher in SuDS sites but decreased when aluminium concentrations exceeded concentrations those of surface water standards. However, pond desiccation was a significant element in the 2018 study year. It was concluded that natural ponds and SuDS varied in water quality but were important in supporting amphibian populations. However, water quality might influence amphibian development more than breeding attempts; implications and management recommendations are highlighted based on these observations.
6
Zubelzu, Sergio, Leonor Rodríguez-Sinobas, Alvaro Sordo-Ward, Alan Pérez-Durán, and Rodolfo Cisneros-Almazán. "Multi-Objective Approach for Determining Optimal Sustainable Urban Drainage Systems Combination at City Scale. The Case of San Luis Potosí (México)." Water 12, no. 3 (March 16, 2020): 835. http://dx.doi.org/10.3390/w12030835.
Full textAbstract:
A method for determining the optimal Sustainable Urban Drainage Systems (SUDs) combination at city scale is presented in this paper. A comprehensive set of SUDs categories comprising infrastructures aimed at either detaining and locally reusing or infiltrating precipitation are considered. A volumetric water balance is proposed for modelling hydrological processes in urban catchments. A multi-criteria approach combining a cost function and aims for both recharging aquifers and limiting runoff contribution to water courses is proposed to find the optimal SUDs combination. The water balance was run with each possible SUDs combination and the optimal set of SUDs was found. The method was applied to the Metropolitan Area of San Luis Potosí (Mexico). The optimal solutions in this case clearly promoted surface runoff detention and reuse over porous pavements and green roofs but they were sensitive to the considered costs. The SUD requirements to potential new urban developments for each catchment to comply with the original hydrological aims were also studied. The method requires customizing the cost function and using representative climatic data.
7
Moore, S. L., V. R. Stovin, M. Wall, and R. M. Ashley. "A GIS-based methodology for selecting stormwater disconnection opportunities." Water Science and Technology 66, no. 2 (July 1, 2012): 275–83. http://dx.doi.org/10.2166/wst.2012.172.
Full textAbstract:
The purpose of this paper is to introduce a geographic information system (GIS)-based decision support tool that assists the user to select not only areas where (retrofit) sustainable drainage systems (SuDS) could be implemented within a large catchment (>100 ha), but also to allow discrimination between suitable SuDS techniques based on their likely feasibility and effectiveness. The tool is applied to a case study catchment within London, UK, with the aim of increasing receiving water quality by reducing combined sewer overflow (CSO) spill frequency and volume. The key benefit of the tool presented is to allow rapid assessment of the retrofit SuDS potential of large catchments. It is not intended to replace detailed site investigations, but may help to direct attention to sites that have the greatest potential for retrofit SuDS implementation. Preliminary InfoWorks CS modelling of ‘global disconnections’ within the case study catchment, e.g. the removal of 50% of the total impervious area, showed that CSO spill volume could be reduced by 55 to 78% during a typical year. Using the disconnection hierarchy developed by the authors, the feasibility of retrofit SuDS deployment within the case study catchment is assessed, and the implications discussed.
8
Viavattene, C., and J. B. Ellis. "The management of urban surface water flood risks: SUDS performance in flood reduction from extreme events." Water Science and Technology 67, no. 1 (January 1, 2013): 99–108. http://dx.doi.org/10.2166/wst.2012.537.
Full textAbstract:
The need to improve the urban drainage network to meet recent urban growth and the redevelopment of old industrial and commercial areas provides an opportunity for managing urban surface water infrastructure in a more sustainable way. The use of sustainable urban drainage systems (SUDS) can reduce urban surface water flooding as well as the pollution impact of urban discharges on receiving waters. However, these techniques are not yet well known by many stakeholders involved in the decision-making process, or at least the evidence of their performance effectiveness may be doubted compared with more traditional engineering solutions often promoted by existing 1D/2D drainage models. The use of geographic information systems (GIS) in facilitating the inter-related risk analysis of sewer surface water overflows and urban flooding as well as in better communication with stakeholders is demonstrated in this paper. An innovative coupled 1D/2D urban sewer/overland flow model has been developed and tested in conjunction with a SUDS selection and location tool (SUDSLOC) to enable a robust management approach to surface water flood risks and to improve the resilience of the urban drainage infrastructure. The paper demonstrates the numerical and modelling basis of the integrated 1D/2D and SUDSLOC approach and the working assumptions and flexibility of the application together with some limitations and uncertainties. The role of the SUDSLOC modelling component in quantifying flow, and surcharge reduction benefits arising from the strategic selection and location of differing SUDS controls are also demonstrated for an extreme storm event scenario.
9
Yildiz, Anil, and Ross A. Stirling. "Investigating green infrastructure as potential medium for ground heat exchangers." E3S Web of Conferences 205 (2020): 06013. http://dx.doi.org/10.1051/e3sconf/202020506013.
Full textAbstract:
Space heating and cooling comprises a significant portion of the overall energy consumption. Ground heat exchangers (GHE), are a sustainable alternative to conventional, non-renewably powered heating and cooling systems. Space is a scarce resource in densely urbanised areas, allocating dedicated locations to build GHE systems can result in high initial capital costs and an inflexibility in retrofitting. An alternative solution is to utilise existing, multi-benefit and resilient Sustainable Drainage Systems (SuDS) in cities. An investigation into the feasibility of utilising SuDS as sites for potential GHEs requires an understanding of their thermal and hydrological behaviour and boundary conditions. This study utilises a heavily-instrumented, vegetated lysimeter setup, exposed to atmospheric conditions, to test a pilot-scale SuDS heat exchanger. Heat rejection into the substrate of a SuDS has been simulated with the application of heat via voltage-controlled heating cables at a depth of 850 mm for 72-hour durations (at three different power inputs) with 96-hours between each power input. These heat dissipation periods are reflected in measured soil temperature profiles. Volumetric water content, matric suction, soil temperature and heat flux are monitored at various locations in the lysimeter. A finite difference modelling scheme has been developed to simulate the variation in soil temperature due to heat rejection.
10
Ma, Yao, Xilin Xia, Qiuhua Liang, and Hongyou Wan. "Investigating the Impact of Spatial Distribution of Sustainable Drainage System (SuDS) Components on Their Flood Mitigation Performance in Communities with High Groundwater Levels." Water 14, no. 9 (April 22, 2022): 1367. http://dx.doi.org/10.3390/w14091367.
Full textAbstract:
This paper investigated the impact of the spatial distribution of SuDS components on their flood reduction performance and the underlying mechanisms in a community with high groundwater levels. The effects of SuDS components’ connectivity, decentralized level, and installation position along the flow direction on the reduction of total discharge volume (TDV), average discharge flow rate (ADFR), maximum discharge flow rate (MDFR), inundated area (IA), average inundated depth (AID), and maximum inundated depth (MID) were studied by coupling of the storm water management model (SWMM) and high-performance integrated hydrodynamic modelling system (HiPIMS). The results demonstrate that the connectivity has a positive linear correlation with the reduction of TDV (R2 > 0.991), ADFR (R2 > 0.992), and MDFR (R2 > 0.958), while the decentralized level of rain gardens and green roofs present positive one-phase exponential correlation with the reduction of TDV (R2 > 0.935), ADFR (R2 > 0.934) and MDFR (R2 > 0.967). A better-integrated mitigation of TDV and ADFR could be achieved by installing SuDS upstream along the flow direction. The connectivity from green roofs to rain gardens has a positive effect on the reduction of AID and MID but leads to the increase of IA. The findings of this study may contribute to the development of general spatial distribution guidelines and strategies to optimize the overall performance of SuDS components, especially at a community scale.
Dissertations / Theses on the topic "SuDS modelling"
1
Lind, Johanna. "Stormwater modelling tools : a comparison and evaluation." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-250267.
Full textAbstract:
Stormwater is rain, melt and rinse water that temporarily runs off the ground surface. In cities with many impermeable surfaces large amounts of stormwater may be formed. Stormwater is diverted through conduits and ditches to recipients. If the diversion of stormwater is insufficient flooding can occur. Stormwater contains contaminants from the catchment surfaces such as nutrients, heavy metals, bacteria, organic compounds and oils. To study stormwater pollution and flows various stormwater modelling tools are used. The purpose of this thesis is to test, compare and evaluate four stormwater modelling tools and conclude their strengths and weaknesses. This was done by a literature study, a market research, definition of evaluation criteria and by testing the tools on a case study of an industrial and residential area in Scotland. The main developed evaluation criteria was model characteristics, required input, user friendliness, output and model application. The four selected tools were StormTac, Infoworks CS, SuDS Studio and MUSIC. The case study included both flow and pollutants on a yearly basis and for a rainfall event. The results from the study were compared against observed values both before and after calibration. No model gave good model predictions for all parameters. The observed volumes of water were larger than modelled for all four models even after calibration. An intercomparison between the models however gave a better fit. Regarding pollutants, the model predictions compared with observed values varied between the tools and substances. Strengths with StormTac are that it includes over 70 pollutants, includes the recipient and gave good model predictions for pollutant concentrations when compared with observed pollutants. A weakness is that StormTacs automatically calculated base flow was much smaller than observed in the case study and the tool is not suited for studies of single event rainfalls.Strengths with Infoworks CS are that it is fully distributed, a complete network is built up and the tool can be used for design of networks, flood predictions and flows over time. It is time consuming to build a model in Infoworks CS, few default pollutants are included and it gave poor model predictions for nitrogen concentrations in the case study. SuDS Studio is a unique tool for defining suitable options for retrofitting SuDS solutions and this is a strength as it is the only tool of its kind. SuDS studio gave large intervals for pollutant loads in the case study which can be difficult to interpret. A strength with MUSIC is that it is user friendly and can be used for comparing water quality pre and post treatment. It does however only include three default pollutants in the model, and only three pollutants can be modelled at a time.
2
Lashford, C. "Modelling the role of SuDS management trains to minimise the flood risk of new-build housing developments in the UK." Thesis, Coventry University, 2016. http://curve.coventry.ac.uk/open/items/474dda63-e82a-4c40-9833-b1891f351fac/1.
Full textAbstract:
In a changing climate with an increasing risk of flooding, developing a sustainable approach to flood management is paramount. Sustainable Drainage Systems (SuDS) present a change in thinking with regards to drainage; storing water in the urban environment as opposed to rapidly removing it to outflows. The Non-Statutory Standards for SuDS (DEFRA 2015a) presented a requirement for all developments to integrate SuDS in their design to reduce runoff. This research models the impact on water quantity of combining different SuDS devices to demonstrate their success as a flood management system, as compared to conventional pipe based drainage. The research uses MicroDrainage®, the UK industry standard flood modelling tool which has an integrated SuDS function, to simulate the role of SuDS in a management train. As space is often cited as the primary reason for rejecting SuDS, determining the most effective technique at reducing runoff is critical. Detention basins were concluded as being highly effective at reducing peak flow (150 l/s when combined with swales), however Porous Pavement Systems (PPS) was nearly twice as effective per m3, reducing peak flow by up to 0.075 l/s/m3 compared to 0.025 l/s/m3. This therefore suggests that both detention basins and PPS should be high priority devices when developing new sites, but that no matter what combination of modelled SuDS are installed a reduction in runoff in comparison to conventional drainage can be achieved. A SuDS decision support tool was developed to assist design in MicroDrainage® by reducing the time spent determining the number of SuDS required for a site. The tool uses outputs from MicroDrainage® to rapidly predict the minimum and maximum peak flow for a site, in comparison to greenfield runoff, based on the site parameters of area, rainfall rate, infiltration, combined with the planned SuDS. The tool was underpinned by a model analysis for each site parameter and each SuDS device, which produced r2 values >0.8, with 70% above 0.9. This ensured a high level of confidence in the outputs, enabling a regression analysis between runoff and each site parameter and SuDS device at the 99% confidence level, with the outputs combined to create the tool. The final aspect of the research validated MicroDrainage® to analyse the accuracy of the software at predicting runoff. Using field data from Hamilton, Leicester, and laboratory data for PPS and filter drains, a comparison could be made with the output from MicroDrainage®. The field data created a Nash-Sutcliffe Efficiency (NSE) of 0.88, with filter drains and PPS providing an NSE of 0.98 and 0.94 respectively. This demonstrates the success with which MicroDrainage® predicts runoff and provides credibility to the outputs of the research. Furthermore, it offers SuDS specialists the confidence to use MicroDrainage® to predict runoff when using SuDS.
3
Smith, Kerry W. S. "Development of a transitioning approach to reduce surface water volumes in combined sewer systems." Thesis, Abertay University, 2016. https://rke.abertay.ac.uk/en/studentTheses/b7c5021f-2efe-421a-b32f-0ac3161fc511.
Full textAbstract:
The overarching goal of this research is to establish a successful forum for a transition from the existing paradigm of managing wastewater infrastructure to a more sustainable paradigm that achieves a more efficient utilisation of wastewater assets. A transitioning approach to support a more efficient utilisation of surface water and wastewater assets and infrastructure is proposed and developed. The determined transitioning approach possesses key stages namely developing the arena, developing the agenda, case study, and monitoring. The case study stage investigates a drainage utility identifying their improvement drivers, the removal of surface water through detailed drainage modelling and the financial examination of the costs incurred under the various scenarios conducted. Understanding the implications of removing/attenuating surface water from the network is improved through obtaining data by detailed drainage modelling. Infoworks software is used to investigate and assess the current and future operational scenarios of a wastewater system operating over one calendar year. Modelling scenarios were conducted removing surface water from selected areas focusing on the volumes requiring pumping and durations of pumping station(s) operation prior to treatment during storm conditions. The financial implication of removing surface water in combined sewer systems is examined in three main components. Firstly the costs of electricity incurred at the single sewage pumping station (SPS) investigated during the various scenarios modelled require to be addressed. Secondly the costs to retrofit sustainable urban drainage system (SUDS) solutions needs to be identified. Thirdly the implications of removing surface water for the drainage utility at the national level and the potential saving for householder’s committing to a surface water disconnection rebate scheme. When addressed at the macro level i.e., with over 2,100 pumping stations, some operating in sequence and contained within one drainage utility annually treating 315,360 megalitres the significance of the same multiple quantifiable and intangible benefits becomes amplified. The research aims, objectives and findings are presented to the identified and convened stakeholders. The transitioning approach developed encourages positive discourse between stakeholders. The level of success of the transitioning approach determined is then tested using a quantitative methodology through the completion of questionnaires. From the questionnaires completed the respondents unanimously agreed that surface water flows should be removed as well as reduced from the combined sewer system. The respondents agreed that the removal of surface water from a typical combined sewer system is justified by applying a transitioning approach focusing on the energy consumption required to pump increased volumes during storm events. This response is significant based upon the economic evidence and is contrary to the respondents previous position that finance was their most influencing factor. When provided with other potentially available benefits the respondents were even more supportive of the justification to remove surface water from the combined sewer system. The combined findings of the work presented in this thesis provide further justification that the transitioning approach applied to the removal of surface water from a typical combined sewer system, as determined in this research has been successful.
4
Beniest, Anouk. "From continental rifting to conjugate margins : insights from analogue and numerical modelling." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066289/document.
Full textAbstract:
Les marges conjuguées de l'Atlantique Sud sont le produit du rifting et de la rupture du continent Pangée. Ce continent présente une hétérogénéité crustale et lithosphérique importante, dont la prise en compte est un objectif de la thèse. Afin de comprendre la rupture continentale à l'échelle lithosphérique de systèmes de rhéologies préexistantes très différentes, nous avons effectué des modélisations, analogique et numérique. Les modèles analogiques s'attachent à montrer l'effet des forces externes sur un tel système hétérogène tandis que les modèles numériques, thermomécaniques, se concentrent sur l'impact des anomalies de fusion du manteau sur le rifting avec une telle configuration.Avec la modélisation analogique, l'effet des forces aux limites sur un système composé de deux segments de rhéologies différentes a été testé à l’échelle de la lithosphère pour comprendre l'influence de l'hétérogénéité rhéologique dans un système en extension. Les résultats montrent que dans un système combiné, toute l'extension se produit dans le segment faible et que le contact entre les deux segments ne joue pratiquement aucun rôle dans l'initiation des failles. Lorsque le segment le plus faible contient une couche résistante dans le manteau supérieur, le rift évolue en deux phases. La première phase montre un système de failles larges où la déformation est distribuée. Une fois que la partie résistante du manteau supérieur est suffisamment affaiblie, l'extension se localise le long d'une zone de faille étroite. Si l'extension continuait, la rupture se produirait à cet emplacement, dans une partie plutôt homogène alors que le système est latéralement hétérogène. Le résultat de ce système extensif serait des marges asymétriques avec une croûte faible/hyper-étirée sur deux marges.Les résultats numériques montrent que, dans le cas de la rupture continentale induite par un panache, le mode de rupture «central», où la rupture se localise au-dessus du point de l'impact du panache, est une forme de rupture continentale parmi d'autres. Ainsi, lorsque l'anomalie de fusion du manteau est localisée de manière décalée par rapport au contact entre les segments rhéologiques, un mode de rupture "décalé" peut se développer. Dans ce cas, le matériel du panache atteint la base de la lithosphère et s’écoule latéralement jusqu’au contact entre les deux segments rhéologiques où le rifting se localise in fine. La partie du matériel qui n’arrive pas au centre de la zone de rupture, se situe au niveau de la croûte inférieure ou bien plus profond, ressemblant aux corps de densité/vitesse élevées imagés le long des marges de l'Atlantique Sud. De plus, le mode «décalé» reproduit l'asymétrie des marges conjuguéesThe South Atlantic conjugate margins are the product of continental rifting and break-up of Pangea, which was made up of different crustal features prior to rifting. This study investigates continental rift initiation and break-up of alternative lithospheric setups, consisting of large segments with different rheological strength, with the use of analogue and numerical modelling. The analogue models investigate the effect of far-field forces on a system that consist of multiple rheological segments, whereas the numerical models include thermal processes and focus on the impact of initial plume emplacement on such a setup.Lithosphere-scale analogue models consisting of two different rheological compartments have been subjected to extensional forces, to understand effect of far-field forces on large rheological heterogeneities in a system within an extensional tectonic regime. The results show that in such a system, the weaker segment accommodates all the extension. At the contact between the two compartments no rift-initiation is observed. In the presence of a strong sub-Moho mantle, the rift evolution consists of two phases. The first phase is a wide or distributed rift event. Once the strong part of the upper mantle has sufficiently weakened, the rift localizes and a narrow rift continues to accommodate the extension. If extension would continue, break-up would happen at the location of the narrow rift, thereby breaking a rather homogenous part within a laterally heterogeneous system. This would result in asymmetric margins with hyperextended, weak crust on both margins.The numerical results show that, in the case of plume-induced continental break-up, the classical ‘central’ mode of break-up, where the break-up centre develops above the plume-impingement point is not the only form of continental break-up. When the mantle anomaly is located off-set from the contact between rheological segments, a ‘shifted’ mode of break-up may develop. In this case, the mantle plume material rises to the base of the lithosphere and migrates laterally to the contact between two rheological segments where rifting initiates. Mantle material that does not reach the spreading centre and remains at lower crustal depths, resemble high density/high velocity bodies at depth found along the South Atlantic margin and providing geometric asymmetry.Further investigation on the exact influence of the initial plume position with respect to the contact between the rheological compartments shows that there is a critical distance for which the system develops either ‘central’ (or ‘plume-induced’) continental break-up or ‘shifted’ (or ‘structural inherited’) continental break-up. For Moho temperatures of 500 – 600 oC, there is a window of ~50 km where the system creates two break-up branches. These results explain complex rift systems with both vertical penetration of plume material into the overlying lithosphere as well as reactivated inherited structures developing break-up systems both aided by the same mantle plume
5
Santos, Clayton Eduardo dos. "Modelagem computacional de estruturas anatômicas em 3D e simulação de suas imagens radiográficas." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/18/18133/tde-15102008-141521/.
Full textAbstract:
Os métodos de controle de qualidade tradicionais aplicados ao radiodiagnóstico, é a melhor maneira de garantir a boa qualidade das imagens produzidas. No entanto, a investigação de particularidades oriundas do processo de formação de imagens radiológicas requer ferramentas computacionais complementares, em função do número de variáveis envolvidas. Entretanto, os fantomas computacionais baseados em voxels não conseguem representar as variações morfométricas necessárias para a simulação de exames cujo diagnóstico é baseado em imagem. Neste trabalho foi desenvolvido um novo tipo de fantoma computacional, baseado em modelagem 3D, que possui as vantagens apresentadas pelos fantomas computacionais tradicionais sem os problemas encontados nestes. A ferramenta de modelagem utilizada, o Blender, é disponibilizada gratuitamente na internet. A técnica utilizada foi a box modeling, que consiste na deformação de uma primitiva básica, nesse caso um cubo, até que apresente a forma da estrutura que se deseja modelar. Para tanto, foram utilizadas como referencia, imagens obtidas de atlas de anatomia e fotografias de um esqueleto fornecido pela Universidade de Mogi das Cruzes. Foram modelados o sistema ósseo, os órgãos internos e a anatomia externa do corpo humano. A metodologia empregada permitiu a alteração de parâmetros do modelo dentro da ferramenta da modelagem. Essa possibilidade foi mostrada através da variação, dos formatos do intestino e do aumento da quantidade de tecido adiposo da malha referente a pele. A simulação das imagens radiológicas foi realizada a partir de coeficientes de atenuação de massa de materiais, ossos e tecidos e de modelos com diversas características físicas. Essa versatilidade permite prever a influência que as diferenças morfométricas entre os indivíduos provocam nas imagens, propriciando dessa forma, uma ferramenta relevante complementar aos métodos de controle de qualidade tradicionais.The conventional methods of quality control applied to radio diagnosis are the best way to have assured good quality of the produced images. Due the amount of variables to consider, the study of particular issues of the process of formation of radiological images requires complementary computational tools. However, the computational voxel based phantoms are not suitable to represent the morphometrical variations, intended for test simulations with image based diagnosis. This work developed a new type of computational phantom, based on 3D modelling. It has the same advantages of the conventional ones, without some of their restrictions. The modeling tool employed, Blender, is available on internet for free download. The project uses the technique called box modeling, which consists in the deformation of a primitive form (a cube, in this case) until it presents a similar form to that it is wanted to model. In order to achieve it, some images, obtained from anatomy atlas and a skeleton pictures obtained from University of Mogi das Cruzes, were used as reference. Were built models from skeletal system, internal organs and external human body anatomy. The applied methodology allowed model´s parameter settings on the modelling tool. This option was presented by means of intestine format variation and increase of adipose tissue on the mesh that represents skin. The simulation of radiological images was done by means of x-ray mass attenuation coefficients, bones and tissues and models with diferent physical characteristics. This flexibility allows the analysis and forecasting of the influences that morphometrical differences of individual implies on images, revealing an important tool that complements the conventional quality control tools.
6
Vidal, Jr João de Deus. "Histórico da ocupação das chapadas brasileiras por espécies do gênero Rauvolfia L. (Apocynaceae) e suas implicações biogeográficas." Botucatu, 2018. http://hdl.handle.net/11449/153936.
Full textAbstract:
Orientador: Ingrid KochResumo: Neste estudo, nós desenvolvemos marcadores moleculares e aplicamos abordagens integrativas em filogeografia e ecologia para investigar e descrever a história biogeográfica das chapadas da região oeste do Cerrado brasileiro. Utilizando como modelo duas espécies do gênero Rauvolfia L. (Apocynaceae, Rauvolfioideae), Rauvolfia weddelliana Müll.Arg. e Rauvolfia gracilis I.Koch & Kin.-Gouv., típicas destes ambientes, nós desenvolvemos um conjunto de marcadores nucleares microssatélites e sequenciamos espaçadores de cloroplasto, com os quais estimamos métricas de diversidade genética e estruturação populacional. A partir destes dados, nós reconstruímos relações filogenéticas entre as linhagens, estimamos tempos de divergência e realizamos simulações demográficas e modelos de distribuição, com o intuito de testar possíveis cenários biogeográficos. Em sequência, nós desenvolvemos modelos de distribuição potencial em escala de comunidade e análises espaciais, para estimar o impacto relativo das flutuações climáticas do Pleistoceno sobre o endemismo no Cerrado, quando comparadas a outros processos. Os resultados estão apresentados em três capítulos. No primeiro, intitulado “Development and cross-validation of microsatellite markers for Rauvolfia weddelliana Müll.Arg. (Apocynaceae) species complex”, nós descrevemos o desenvolvimento de uma biblioteca de microssatélites específica para R. weddelliana e testamos sua transferabilidade para a espécie R. gracilis. Nós isolamos dez marcadores ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: In this study, we developed molecular markers and applied integrative approaches in phylogeography and ecology to investigate and describe the biogeographic history of the plateaus of the west region of the Cerrado in Brazil. Using as models two species of the genus Rauvolfia L. (Apocynaceae, Rauvolfioideae), Rauvolfia weddelliana Müll.Arg. and Rauvolfia gracilis I.Koch & Kin.-Gouv., typical from these habits, we developed a set of nuclear microsatellite markers and sequenced chloroplast spacers, which we used to estimate metrics of genetic diversity and population structure. From this data, we reconstructed phylogenetic relationships between lineages, estimated divergence times and conducted demographic simulations and distribution models, intending to test possible biogeographic scenarios. In sequence, we also developed community wise models of potential distribution and conducted spatial analysis to estimate the relative impact of climatic shifts of the Pleistocene on the endemism of the Cerrado, when compared to other processes. Our results are presented in three chapters. In the first, entitled “Development and cross-validation of microsatellite markers for Rauvolfia weddelliana Müll.Arg. (Apocynaceae) species complex”, we describe the development of a specific microsatellite library to R. weddelliana and tested its transferability to the species R. gracilis . We isolated ten transferable markers with high polymorphism content that may now be applied to genetics studies ... (Complete abstract click electronic access below)
Doutor
7
Bound, Alice Jayne. "The development and use of satellite remote sensing techniques for the monitoring and hydrological modelling of the Sudd Marshes." Thesis, University College London (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313982.
Full text
8
LIMA, Renato Paiva de. "Modelos de capacidade de suporte de carga e suas relações com atributos físicos e mecânicos em argissolo amarelo distrocoeso." Universidade Federal Rural de Pernambuco, 2013. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5670.
Full textAbstract:
Submitted by (lucia.rodrigues@ufrpe.br) on 2016-10-11T14:11:57Z
No. of bitstreams: 1
Renato Paiva de Lima.pdf: 524535 bytes, checksum: 47be2d27255026d21fdeb8e8a90a484f (MD5)Made available in DSpace on 2016-10-11T14:11:57Z (GMT). No. of bitstreams: 1 Renato Paiva de Lima.pdf: 524535 bytes, checksum: 47be2d27255026d21fdeb8e8a90a484f (MD5) Previous issue date: 2013-07-18
Models that predict pre-consolidation stress in Ultisol are scarce, given the importance of these soils for the production of sugarcane in the Northeast. The current study aimed to fit linear and nonlinear regression models and study the relationship of soil physical attributes on pre-consolidation stress (σp) variation. On a plot, 42 points were delimited to get samples in the layers 0-0.20 and 0.20-0.40 m, totaling 84 samples. Deformed and undeformed samples were collected to obtain the variables: water content (θ), bulk density (BD), soil resistance to penetration (RP), organic carbon (OC), clay content (C), plastic limit (PL) and liquid limit (LL), as well as the pre-consolidation stress (σp). Four models were fitted to predict the σp: linear multiple regression, two nonlinear multiple model and charge supporter capacity model. Was also held for each layer a principal component analysis was performed and, after obtaining the scores for those components retained, a linear multiple regression model was fitted for the σp data to establishment of the relationships. The average of σp was 73.0 kPa. The multiple linear regression model was the best fit soil conditions and management of the area in the two analyzed layers. Only soil bulk density and penetration resistance contributed significantly to variation σp models with the best settings. The θ and the OC showed negative relations with σp; while BD, RP, C, LL and PL showed positive relation. Higher values of σp are associated with higher values of BD, RP, C, LL and PL, as well as smaller values are linked with the increase of OC concentration and θ.
Modelos que predizem a tensão de pré-consolidação em Argissolo Amarelo distrocoeso são escassos na literatura, dada a importância desses solos para produção de cana-de-açúcar no Nordeste. O presente estudo teve como objetivos ajustar modelos de regressão lineares e não lineares e estudar as relações dos atributos físicos do solo na variação da tensão de pré-consolidação (σp). O trabalho foi realizado em área de Argisssolo Amarelo distrocoeso cultivado com cana-de-açúcar. Em um talhão, foram demarcados 42 pontos e coletadas amostras nas camadas 0-0,20 e 0,20-0,40 m, totalizando 84 pontos amostrais. Foram coletadas amostras deformadas e não deformadas para obtenção das variáveis: umidade do solo (θ), densidade do solo (DS), resistência à penetração (RP), carbono orgânico (CO), teor de argila (TA), limite de plasticidade (LP) e limite de liquidez (LL), além da tensão de pré-consolidação (σp). Foram ajustados quatro modelos para predição da σp: regressão linear múltipla, dois modelo não lineares e um modelo não linear de capacidade de suporte de carga, bem como, foi realizada análise de componentes principais, em cada uma das camadas estudadas, que após obtenção dos escores dos componentes principais retidos em cada camada de solo, um modelo de regressão linear múltiplo foi ajustado aos dados de σp para estabelecimento das relações. A σp média foi de 73,0 kPa; sendo o modelo de regressão linear múltipla o que melhor se ajustou as condições de solo e manejo da área nas duas camadas analisadas. Apenas a densidade do solo e a resistência à penetração contribuíram significativamente para variação da σp nos modelos com os melhores ajustes. A θ e o CO apresentaram relações negativas com a σp, enquanto DS, RP, TA, LL e LP positivas. Maiores valores de σp estão associados a maiores valores de DS, RP, TA, LL e LP, assim como os menores a um aumento da concentração de CO e da θ.
9
Pau, Claudia. "Economia dello sviluppo, teorie e modelli di cooperazione internazionale: caso di studio nel sud del Marocco." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2445/.
Full text
10
Toro, Balbontin Darío. "Analyse de la détérioration de la forêt de la Cordillère de la Costa dans le sud chilien : géomatique et modélisation prospective appliquée sur une forêt patrimoniale de la province d'Osorno (41º 15’ - 41º 00’ latitude Sud)." Thesis, Toulouse 2, 2014. http://www.theses.fr/2014TOU20068/document.
Full textAbstract:
On étudie une zone de la Cordillère de la Costa au sud du Chili (41°15'S-41°00'S), habitée par l'ethnie Mapuche. Là, il y a encore des précieuses forêts tempérées, qui ont une haute priorité de conservation au plan mondial. Mais, il est constaté, un processus continu de transformation lié à l'extraction de bois de chauffe, l'élevage extensif, la perturbation de l'habitat du conifère Fitzroya cupressoides, et le déploiement des plantations forestières. Sur la base d'une classification multi-temporelle d'images satellite, une modélisation spatio-temporelle a été mise en œuvre pour comprendre et anticiper la dynamique de la détérioration de la forêt. L'analyse rétrospective révèle qu'entre 1976 et 2008, la forêt a été réduite 12400 ha, soit un taux de déforestation 0,25% par an. 20 modèles de déforestation sont calibrés, 4 d'entre eux sont sélectionnés pour construire des scénarios prospectifs. La simulation prévoit que la diminution de forêt entre 2008 et 2040 pourrait atteindre 13000 ha. Deux autres modèles mis en œuvre simulent l'évolution de la qualité de l'habitat de F. cupressoides. Les scénarios prévoient une augmentation de la surface détériorée ; l’extrapolation à partir de la période d’apprentissage 2001-2008 pendant laquelle la plus grande part de terres indigènes a été légalisée, par rapport à la période précédente à 2001, prédit une augmentation plus significative de la surface détériorée. On fournit un outil pour amplifier la gestion territoriale des systèmes environnementaux toujours non incorporée dans la planification chilienne. Enfin, la thèse met également d'intéressantes comparaisons entre modèles qui diffèrent par rapport aux paramètres de calibrationSAn area of the Cordillera de la Costa is studied in southern Chile (41°15'S - 41°00'S), inhabited by ethnic Mapuche. There are still valuable temperate forests that have high conservation priority worldwide. But it is found, a continuous process of transformation related to the extraction of firewood, ranching, disruption of habitat conifer Fitzroya cupressoides, and deployment of forest plantations. Based on a multi-temporal satellite images classification, a spatial-temporal modeling was implemented to understand and predict the dynamics of the deterioration of the forest. Retrospective analysis revealed that between 1976 and 2008, the forest has been reduced 12,400 ha, a deforestation rate of 0.25% per annum. 20 models of deforestation are calibrated, 4 of them are selected to construct scenarios. The simulation predicted that reductions of forest between 2008 and 2040 could reach 13,000 ha. Two other models implemented simulate changes in habitat quality F. cupressoides. Scenarios predict an increase in the damaged surface; extrapolating from the learning period 2001-2008 during which the largest share of indigenous lands was legalized, compared with the previous period to 2001, predicts a significant increase in the damaged surface. In this way, it provides a tool to enhance the local management of environmental systems still not incorporated into the Chilean planning. Finally, the thesis also makes interesting comparisons between models that differ with respect to the calibration parameters
Books on the topic "SuDS modelling"
1
Novati, Giampaolo Calchi. L'alternativa Sud-Sud, chi vince e chi perde: Economia, politica, modelli culturali. Roma: Carocci, 2011.
Find full text
2
Novati, Giampaolo Calchi. L'alternativa Sud-Sud, chi vince e chi perde: Economia, politica, modelli culturali. Roma: Carocci, 2011.
Find full text
3
Martinelli, Caterina. Origine e sviluppo dell'immigrazione sud-asiatica in Gran Bretagna: Modelli d'insediamento tra il secondo dopoguerra e i primi anni '90. Verona: QuiEdit, 2008.
Find full text
4
Martinelli, Caterina. Origine e sviluppo dell'immigrazione sud-asiatica in Gran Bretagna: Modelli d'insediamento tra il secondo dopoguerra e i primi anni '90. Verona: QuiEdit, 2008.
Find full text
5
Origine e sviluppo dell'immigrazione sud-asiatica in Gran Bretagna: Modelli d'insediamento tra il secondo dopoguerra e i primi anni '90. Verona: QuiEdit, 2008.
Find full text
6
Granja, José, and João Poças Martins. 4º Congresso Português de Building Information Modelling vol. 1 - ptBIM. Edited by Bruno Figueiredo, Miguel Azenha, and José Carlos Lino. UMinho Editora, 2022. http://dx.doi.org/10.21814/uminho.ed.32.
Full textAbstract:
Livro de atas do Congresso ptBIM 2022, onde se promove um fórum de discussão técnico-científica em língua Portuguesa nas metodologias ‘Building Information Modelling’ (BIM), envolvendo a participação ativa das comunidades profissional e académica das áreas de Arquitetura e Engenharia. Pretende-se enfatizar os problemas e esforços de implementação na Indústria da Construção e reforçar as redes de profissionais que incorporam práticas BIM nas suas atividades. https://ptbim.org/
7
Figueiredo, Bruno, João Poças Martins, José Granja, José Carlos Lino, and Miguel Azenha. 4º congresso português de ‘Building Information Modelling’ vol. 2 - ptBIM. UMinho Editora, 2022. http://dx.doi.org/10.21814/uminho.ed.77.
Full textAbstract:
Livro de atas do Congresso ptBIM 2022, onde se promove um fórum de discussão técnico-científica em língua Portuguesa nas metodologias ‘Building Information Modelling’ (BIM), envolvendo a participação ativa das comunidades profissional e académica das áreas de Arquitetura e Engenharia. Pretende-se enfatizar os problemas e esforços de implementação na Indústria da Construção e reforçar as redes de profissionais que incorporam práticas BIM nas suas atividades. https://ptbim.org/
8
Martins, João Poças, António Aguiar Costa, and Luís Sanhudo, eds. 3º Congresso Português de ‘Building Information Modelling’ (ptBIM 2020). FEUP, 2020. http://dx.doi.org/10.24840/978-972-752-272-9.
Full textAbstract:
A crescente importância da representação digital de elementos de construção, tornada possível pelas metodologias ‘Building Information Modelling’ (BIM), está a introduzir alterações muito relevantes no projeto, na construção e gestão de operações. Estes processos digitais introduzem novos paradigmas de relacionamento entre os vários ‘atores’ envolvidos, com grande impacto nas formas de desenvolver o trabalho. O objetivo do Congresso PTBIM é o de promover um fórum de discussão técnico-científica em língua Portuguesa, envolvendo a participação ativa das comunidades profissional e académica das áreas de Arquitetura e Engenharia. Pretende-se enfatizar os problemas e esforços de implementação na Indústria da Construção e reforçar as redes de profissionais que incorporam práticas BIM nas suas atividades. Depois do sucesso do 1º e 2º Congresso PTBIM, decorridos, respetivamente, em Guimarães e Lisboa, é com grande expectativa que se organiza esta 3ª edição. O desafio é continuarmos a partilhar experiências, boas práticas e conhecimento, rumo a uma implementação mais consistente da metodologia BIM na indústria da construção.
9
Lacaze, Laura. Encuesta BIM: América Latina y el Caribe 2020. Inter-American Development Bank, 2021. http://dx.doi.org/10.18235/0003023.
Full textAbstract:
Este informe presenta los resultados de una primera encuesta regional de empresas del sector construcción de América Latina y el Caribe para entender mejor la lenta adopción de Building Information Modelling (BIM), una nueva metodología de trabajo colaborativo en base a modelos de datos que contribuye enormemente a la mejora de la productividad del sector. BIM facilita la colaboración entre empresas en un sector donde la falta de coordinación conlleva grandes costos. Pese al reconocimiento unánime de las ventajas del BIM, las empresas encuestadas señalan que la falta de demanda y la ausencia de capacidades y estándares BIM han frenado hasta ahora su adopción. El informe busca ofrecer insumos a actores clave del sector de AEC, a hacedores de política pública, así como a grupos de interés privados y académicos, para orientar mejor sus esfuerzos de apoyo a la transición digital del sector.
Book chapters on the topic "SuDS modelling"
1
El Hattab, Mohamad H., and Ana Mijic. "Adaptation of SuDS Modelling Complexity to End-Use Application." In New Trends in Urban Drainage Modelling, 91–95. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99867-1_16.
Full text
2
Torres, María Narine, Zhenduo Zhu, and Juan Pablo Rodríguez. "A Prioritization Tool for SUDS Planning in Large Cities by Coupling an Urban Drainage Model with Mixed Integer Linear Programming." In New Trends in Urban Drainage Modelling, 141–45. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99867-1_25.
Full text
3
Emberchts, Paul, Claudia Klüppelberg, and Thomas Mikosch. "Fluctuations of Sums." In Modelling Extremal Events, 59–111. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-33483-2_3.
Full text
4
Buldygin, Valeriĭ V., Karl-Heinz Indlekofer, Oleg I. Klesov, and Josef G. Steinebach. "Equivalence of Limit Theorems for Sums of Random Variables and Renewal Processes." In Probability Theory and Stochastic Modelling, 1–25. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99537-3_1.
Full text
5
Buschfeld, Sarah. "Synopsis: Fine-tuning the EIF Model." In Modelling World Englishes, 397–415. Edinburgh University Press, 2020. http://dx.doi.org/10.3366/edinburgh/9781474445863.003.0018.
Full textAbstract:
Chapter 18 offers a synopsis of the preceding chapters. In the light of chapters 2 to 17, the editor sums up and comments on the advantages, shortcomings, and potential pitfalls of the Extra- and Intra-territorial Forces Model and thus evaluates its suitability for both postcolonial and non-postcolonial contexts. The synopsis provides an extended list of extra- and intra-territorial forces which can be identified in the case studies discussed (for a first list of potential forces, see Buschfeld and Kautzsch 2017). It also meets the critical voices raised in some of the contributions and offers some alternations and modifications to the original conception of the model, viz. the revised Extra- and Intra-territorial Forces Model.
6
Heunen, Chris, and Jamie Vicary. "Linear Structure." In Categories for Quantum Theory, 61–88. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198739623.003.0002.
Full textAbstract:
Many aspects of linear algebra can be reformulated as categorical structures. This chapter examines abstractions of the base field, zero-dimensional spaces, addition of linear operators, direct sums, matrices, inner products and adjoints. These features are essential for modelling features of quantum theory such as superposition, classical data and measurement.
7
Andrews, John. "Railway Infrastructure Asset Management Modelling." In Cases on Optimizing the Asset Management Process, 209–40. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-7943-5.ch009.
Full textAbstract:
Railway infrastructure comprises a large collection of diverse and complex systems and structures. Many of them are aging assets and require a significant budget to deliver the maintenance to ensure the required safety and service performance standards. With such a large amount of money spent each year to maintain and renew the network assets, small percentage savings can amount to substantial sums of money. There is therefore a huge incentive to better understand the degradation that assets experience and how these can be effectively managed through the implementation of efficient maintenance strategies. Track and bridges are the most expensive assets to keep in the required condition, and this chapter provides a method to analyse their degradation and build Petri net models to predict the future state of the asset, the number of each maintenance activity which are expected to be undertaken, and their costs experienced by following a particular strategy. Utilising these models enables the quality of the asset management decisions made to be improved and optimised.
8
Boulaki, Vasiliki, Dimitrios Vlachakis, Smaragda Sotiraki, and Sophia Kossida. "An Up-To-Date Review of Piglet Isosporosis." In Veterinary Science, 116–31. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5640-4.ch006.
Full textAbstract:
Piglet isosporosis caused by Isospora suis represents a considerable problem worldwide with great economic losses and veterinary importance in pig production. So the control of this parasite is a great need. However, little is known about porcine coccidiosis concerning dynamics, pathophysiology and immunology of this disease, as well as host-parasite interactions. In addition, only few studies deal with experimental modelling of this illness with parameters such as the excretion patterns and the age-related susceptibility. However, besides natural I. suis infections occurring in pig farms, there are some experimental infections described that allow investigating accurately the course of infection. Experimental infections could contribute to a more effective control of these infections. In addition, managerial practices of farrowing facilities and piglet manipulations can contribute to this purpose. So, the description of hygiene measures, the appropriate management of farrowing facilities and piglet manipulations, as well as appropriate farm-specific environment, comprising appropriate design and materials of the farrowing pen and enough room, could diminish the occurrence and transmission of this parasite. However, unfortunately there are only very few reports documenting all this subjects that are so important for the effective control of this disease.
Conference papers on the topic "SuDS modelling"
1
"Sums of Exponentials Approximations for the Kohlrausch Function." In 19th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand (MSSANZ), Inc., 2011. http://dx.doi.org/10.36334/modsim.2011.a3.anderssen.
Full text
2
Smith, G., and N. Chateau. "MODELLING THE EFFECTS OF OPTICAL FACTORS ON THE CSF." In Vision Science and its Applications. Washington, D.C.: OSA, 1999. http://dx.doi.org/10.1364/vsia.1999.sud1.
Full text
3
Petrova, Tatyana, Elisaveta Kirilova, Wilfried Becker, and Jordanka Ivanova. "Analytical Modelling of Graphene/PMMA Nanocomposite under Hygrothermomechanical Loading." In Materials for Sustainable Development Conference (MAT-SUS). València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2022. http://dx.doi.org/10.29363/nanoge.nfm.2022.024.
Full text
4
Uijt de Haag, Maarten, Svenja Huschbeck, and Christian Berth. "Modelling Assured Navigation of sUAS Swarms in Urban Environments." In 2021 IEEE/AIAA 40th Digital Avionics Systems Conference (DASC). IEEE, 2021. http://dx.doi.org/10.1109/dasc52595.2021.9594465.
Full text
5
"Estimating tail probabilities of random sums of scale mixture of phase-type random variables." In 24th International Congress on Modelling and Simulation. Modelling and Simulation Society of Australia and New Zealand, 2021. http://dx.doi.org/10.36334/modsim.2021.a1.yao.
Full text
6
Nelson, Jenny, Flurin Eisner, Mohammed Azzouzi, Jun Yan, Brian Tam, Phil Sandwell, and Benedict Winchester. "Modelling of materials, devices and systems to optimise integrated photovoltaic applications." In Materials for Sustainable Development Conference (MAT-SUS). València: FUNDACIO DE LA COMUNITAT VALENCIANA SCITO, 2022. http://dx.doi.org/10.29363/nanoge.nfm.2022.193.
Full text
7
Korolev, Victor, Maria E. Grigoryeva, and Alexander Zeifman. "On Convergence Of The Distributions Of Random Sums And Statistics Constructed From Samples With Random Sizes To Exponential Power Laws." In 28th Conference on Modelling and Simulation. ECMS, 2014. http://dx.doi.org/10.7148/2014-0583.
Full text
8
Kunz, O., S. Varlamov, and A. G. Aberle. "Modelling the effects of distributed series resistance on Suns-Voc, m-Voc and Jsc-Suns curves of solar cells." In 2009 34th IEEE Photovoltaic Specialists Conference (PVSC). IEEE, 2009. http://dx.doi.org/10.1109/pvsc.2009.5411707.
Full text
9
Kizel, Fadi, Maxim Shoshany, and Nathan S. Netanyahu. "Spatially adaptive hyperspectral unmixing based on sums of 2D Gaussians for modelling endmember fraction surfaces." In IGARSS 2015 - 2015 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2015. http://dx.doi.org/10.1109/igarss.2015.7326812.
Full text
10
Dousi, Niek. "Novel Workflows to Model Fishbone Wells and Generate Reliable Production Forecasts, Employing an Economic Optimization Procedure." In SPE Norway Subsurface Conference. SPE, 2022. http://dx.doi.org/10.2118/209570-ms.
Full textAbstract:
Abstract In the last years it has become technically- and economically feasible to drill productivity enhancing fishbone wells in tight and/or thin formations or in areas where hydraulic fracturing is not permitted due to local environmental regulations. Modeling of fishbone wells is complex and currently very time-consuming. A fully integrated workflow has been developed to model fishbone wells, using dynamic models to generate reliable production forecasts. This novel workflow comprises of the implementation of pre-defined well trajectories and number of needles in a box- and/or full-field dynamic model. Subsequently, the number of needles and number of wells to be drilled is optimized using a workflow driven by project economics. The workflow comprises the ability to generate forecasts for different well configurations, such as horizontal well length, well depth, number of needles and needle lengths. The needles are modeled explicitly as multilaterals. The needles cannot be oriented during drilling. To obtain a reliable prediction of the recovery of the fishbone wells, a so-called "needle rotation randomizer" has been developed. The orientation of the needles is important in the prediction of future production, as the ratio between the horizontal- and the vertical permeability (KvKh) can be significant in tight formations. The attractiveness of different well- and needle configurations, as well as the number of fishbone wells is assessed as part of the workflow. This paper addresses how different scenarios, including variation of the number of needle stations (subs) and wells impact project economics by applying a simplified Net-Present-Value (NPV) calculation. Modelling results highlight that more subs will lead to a higher production rate, with corresponding higher NPV's. However, too many subs will lead to lower NPV's, as recovery increase becomes more marginal. It will be demonstrated how modelling can be used to optimize the number of subs. With further full-field dynamic modeling the production forecast can be enhanced by varying well numbers and their spacing the using the optimized number of subs. This paper will showcase how, a fully optimized full field development plan, applying fishbone wells can be generated using the applied workflow in a very short timeframe. The novel workflow involves the generation reliable production forecasts for fishbone wells, employing a "needle rotation randomizer". Secondly, the new workflow enables optimizing the number of subs and wells, using an efficient economic optimization assessment.