Relevant bibliographies by topics / Regional scale

Academic literature on the topic 'Regional scale'

Author: Grafiati
Published: 4 June 2021
Last updated: 25 May 2024

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Journal articles on the topic "Regional scale"

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Klima, David A., Sarah H. Seiler, Jeff B. Peterson, A. Britton Christmas, John M. Green, Greg Fleming, Michael H. Thomason, and Ronald F. Sing. "Full-scale regional exercises." Journal of Trauma and Acute Care Surgery 73, no. 3 (September 2012): 592–98. http://dx.doi.org/10.1097/ta.0b013e318265cbb2.

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Rockel, Burkhardt, Raymond Arritt, Markku Rummukainen, and Andreas Hense. "The 2nd Lund Regional-scale Climate Modelling Workshop." Meteorologische Zeitschrift 19, no. 4 (August 1, 2010): 323–24. http://dx.doi.org/10.1127/0941-2948/2010/0462.

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ZIKU, Humihiko. "Regional small-scale sewage treatment." Journal of Environmental Conservation Engineering 15, no. 5 (1986): 375–79. http://dx.doi.org/10.5956/jriet.15.375.

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Biosca, Oriol, Klaus Spiekermann, and Marcin Stępniak. "Transport accessibility at regional scale." Europa XXI 24 (2013): 5–17. http://dx.doi.org/10.7163/eu21.2013.24.1.

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Chand, Annisa. "Nitrogen boundaries at regional scale." Nature Food 3, no. 11 (November 16, 2022): 888. http://dx.doi.org/10.1038/s43016-022-00652-2.

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Gioli, B., and F. Miglietta. "Carbon balance assessment at regional scale." Forest@ - Rivista di Selvicoltura ed Ecologia Forestale 4, no. 4 (December 20, 2007): 469–77. http://dx.doi.org/10.3832/efor0486-0040469.

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Lowenthal, Douglas H., John G. Watson, Darko Koracin, L. W. Antony Chen, David Dubois, Ramesh Vellore, Naresh Kumar, et al. "Evaluation of Regional-Scale Receptor Modeling." Journal of the Air & Waste Management Association 60, no. 1 (January 2010): 26–42. http://dx.doi.org/10.3155/1047-3289.60.1.26.

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Cuthrie, John A. "ECONOMIES OF SCALE AND REGIONAL DEVELOPMENT." Papers in Regional Science 1, no. 1 (January 14, 2005): 121–31. http://dx.doi.org/10.1111/j.1435-5597.1955.tb01423.x.

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Toon, O. B., A. Robock, R. P. Turco, C. Bardeen, L. Oman, and G. L. Stenchikov. "Consequences of Regional-Scale Nuclear Conflicts." Science 315, no. 5816 (March 2, 2007): 1224–25. http://dx.doi.org/10.1126/science.1137747.

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Vallega, Adalberto. "The regional scale of ocean management." Ocean & Coastal Management 39, no. 3 (July 1998): 179–88. http://dx.doi.org/10.1016/s0964-5691(98)00028-3.

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Dissertations / Theses on the topic "Regional scale"

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Benjamin, Jessica. "Regional-scale controls on rockfall occurrence." Thesis, Durham University, 2018. http://etheses.dur.ac.uk/12813/.

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Rockfalls exert a first-order control on the rate of rock wall retreat on mountain slopes and on coastal rock cliffs. Their occurrence is conditioned by a combination of intrinsic (resisting) and extrinsic (driving) processes, yet determining the exact effects of these processes on rockfall activity and the resulting cliff erosion remains difficult. Although rockfall activity has been monitored extensively in a variety of settings, high-resolution observations of rockfall occurrence on a regional scale are scarce. This is partly owing to difficulties in adequately quantifying the full range of possible rockfall volumes with sufficient accuracy and completeness, and at a scale that exceeds the influence of localised controls on rockfalls. This lack of insight restricts our ability to abstract patterns, to identify long-term changes in behaviour, and to assess how rock slopes respond to changes in both structural and environmental conditions, without resorting to a space for-time substitution. This thesis develops a workflow, from novel data collection to analysis, which is tailored to monitoring rockfall activity and the resulting cliff retreat continuously (in space), in 3D, and over large spatial scales (> 10^4 m). The approach is tested by analysing rockfall activity and the resulting erosion recorded along 20.5 km of near-vertical coastal cliffs, in what is considered as the first multi-temporal detection of rockfalls at a regional-scale and in full 3D. The resulting data are then used to derive a quantitative appraisal of along-coast variations in the geometric properties of exposed discontinuity surfaces, to assess the extent to which these drive patterns in the size and shape of the rockfalls observed. High-resolution field monitoring is then undertaken along a subsection of the coastline (> 10^2 m), where cliff lithology and structure are approximately uniform, in order to quantify spatial variations in wave loading characteristics and to relate these to local morphological conditions, which can act as a proxy for wave loading characteristics. The resulting rockfall inventory is analysed to identify the characteristics of rock slope change that only become apparent when assessed at this scale, placing bounds on data previously collected more locally (< 10^2 m). The data show that spatial consistencies in the distribution of rockfall shape and volume through time approximately follow the geological setting of the coastline, but that variations in the strength of these consistencies are likely to be conditioned by differences in local processes and morphological controls between sites. These results are used to examine the relationships between key metrics of erosion, structural, and morphological controls, which ultimately permits the identification of areas where patterns of erosion are dominated by either intrinsic or extrinsic processes, or a mixture of both. Uniquely, the methodologies and data presented here mark a step-change in our ability to understand the competing effects of different processes in determining the magnitude and frequency of rockfall activity, and the resulting cliff erosion. The findings of this research hold considerable implications for our understanding of rockfalls, and for monitoring, modelling, and managing actively failing rock slopes.
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Cordova, Vicente D. "Regional-scale carbon flux estimation using MODIS imagery." Virtual Press, 2005. http://liblink.bsu.edu/uhtbin/catkey/1325989.

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The National Aeronautics and Space Agency NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) platform carried by Terra and Aqua satellites, is providing systematic measurements summarized in high quality, consistent and well-calibrated satellite images and datasets ranging from reflectance in the visible and near infrared bands to estimates of leaf area index, vegetation indices and biome productivity. The objective of this research was to relate the spectral responses and derived MODIS products of ecosystems, to biogeochemical processes and trends in their physiological variables. When different sources of data were compared, discrepancies between the MODIS variables and the corresponding ground measurements were evident. Uncertainties in the input variables of MODIS products algorithms, effects of cloud cover at the studied pixel, estimation algorithm, and local variation in land cover type are considered as the cause. A simple "continuous field" model based on a physiologically-driven spectral index using two ocean-color bands of MODIS satellite sensor showed great potential to track seasonally changing photosynthetic light use efficiency and stress-induced reduction in net primary productivity of terrestrial vegetation. The model explained 88% of the variability in Flux tower-based daily Net Primary Productivity. Also a high correlation between midday gross CO2 exchange with both daily and 8-day mean gross CO2 exchange, consistent across all the studied vegetation types, was found. Although it may not be possible to estimate 8-day mean Light Use Efficiency reliably from satellite data, Light Use Efficiency models may still be useful for estimation of midday values of gross CO2 exchange which could then be related to longer term means of CO2 exchange. In addition, the MODIS enhanced vegetation index shows a high potential for estimation of ecosystem gross primary production, using respiration values from MODIS surface temperature, providing truly per-pixel estimates.
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Begnert, Joel, and Rasmus Tilljander. "Combining Regional Time Stepping With Two-Scale PCISPH Method." Thesis, Blekinge Tekniska Högskola, Institutionen för datalogi och datorsystemteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-10948.

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Context. In computer graphics, realistic looking fluid is often desired. Simulating realistic fluids is a time consuming and computationally expensive task, therefore, much research has been devoted to reducing the simulation time while maintaining the realism. Two of the more recent optimization algorithms within particle based simulations are two-scale simulation and regional time stepping (RTS). Both of them are based on the predictive-corrective incompressible smoothed particle hydrodynamics (PCISPH) algorithm. Objectives. These algorithms improve on two separate aspects of PCISPH, two-scale simulation reduces the number of particles and RTS focuses computational power on regions of the fluid where it is most needed. In this paper we have developed and investigated the performance of an algorithm combining them, utilizing both optimizations. Methods. We implemented both of the base algorithms, as well as PCISPH, before combining them. Therefore we had equal conditions for all algorithms when we performed our experiments, which consisted of measuring the time it took to run each algorithm in three different scene configurations. Results. Results showed that our combined algorithm on average was faster than the other three algorithms. However, our implementation of two-scale simulation gave results inconsistent with the original paper, showing a slower time than even PCISPH. This invalidates the results for our combined algorithm since it utilizes the same implementation. Conclusions. We see that our combined algorithm has potential to speed up fluid simulations, but since the two-scale implementation was incorrect, our results are inconclusive.
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Hanssen, Christina Wår. "Representations of Scale : Influencing EU policy through transnational networks." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for historie og klassiske fag, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-21481.

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All Norwegian regions are represented with permanent offices and are engaged in different activities in the EU capital. This thesis investigates the regional and network level of EU policy-making, and asks the questions of what Norwegian regions are doing in Brussels; if are they are able to influence EU policy; and what effect participation in transnational policy networks have on their abilities to influence EU policy. To answer this, it applies a theoretical framework comprised of multi-level governance and the policy network approach to conduct an analysis of empirical data collected through interviews with different actors in Brussels. The present thesis argues that participation in transnational policy networks improve Norwegian regions' abilities to influence EU policy through being 'representations of scale'.
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Gallagher, Chris C. "Regional-scale transposition and late large-scale folding in the Teslin Zone, Pelly Mountains, Yukon." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0001/MQ43358.pdf.

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Gallagher, Chris C. Carleton University Dissertation Earth Sciences. "Regional-scale transposition and late large-scale folding in the Teslin zone, Pelly Mountains, Yukon." Ottawa, 1999.

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Carrasco, Luis Eduardo. "Scale and Strategy in Environmental Assessment of Regional Development Policies." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-08182008-212000/.

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Since the 1970s multiple research efforts around the world have focused on identifying potential environmental, economic, and social impacts of development. It is well understood that local project assessment approaches fail to identify, or worse quantify, indirect or cumulative effects, when they do not provide an appropriate baseline framework to understand the local and the regional environment as a connected entity. A conceptual approach based on several environmental assessment and spatial analysis tools suggests that we need to consider multi-scale methods that can help describe the different processes that occur within a region. This would help project managers and researchers to better evaluate ongoing regional policies by retrieving a wide characterization of the application and impacts of policies within the whole geographical spectrum. Within each policy assessment, these methods could evolve into a framework for environmental management practices at both local and regional scales that could be updated with new information through time. We analyze two regional policy case studies: poverty targeting in Sri Lanka, and payments for ecosystem services in Costa Rica.
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Boushaki, Farid Ishak. "Statistical relationship between drought indices and NDVI at regional scale." Thesis, The University of Arizona, 2002. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu_etd_hy0192_sip1_w.pdf&type=application/pdf.

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Smallman, Thomas Luke. "Atmospheric profiles of CO₂ as integrators of regional scale exchange." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/8886.

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The global climate is changing due to the accumulation of greenhouse gases (GHGs) in the atmosphere, primarily due to anthropogenic activity. The dominant GHG is CO₂ which originates from combustion of fossil fuels, land use change and management. The terrestrial biosphere is a key driver of climate and biogeochemical cycles at regional and global scales. Furthermore, the response of the Earth system to future drivers of climate change will depend on feedbacks between biogeochemistry and climate. Therefore, understanding these processes requires a mechanistic approach in any model simulation framework. However ecosystem processes are complex and nonlinear and consequently models need to be validated against observations at multiple spatial scales. In this thesis the weather research and forecasting model (WRF) has been coupled to the mechanistic terrestrial ecosystem model soil-plant-atmosphere (SPA), creating WRF-SPA. The thesis is split into three main chapters: i. WRF-SPA model development and validation at multiple spatial scales, scaling from surface fluxes of CO₂ and energy to aircraft profiles and tall tower observations of atmospheric CO₂ concentrations. ii. Investigation of ecosystem contributions to observations of atmospheric CO₂ concentrations made at tall tower Angus, Dundee, Scotland using ecosystem specific CO₂ tracers at seasonal and interannual time scales. iii. An assessment of detectability of a policy relevant national scale afforestation by observations made at a tall tower. Detectability of changes in atmospheric CO₂ concentrations was assessed through a comparison of a control simulation, using current day forest extent, and an experimentally afforested simulation using WRF-SPA. WRF-SPA performs well at both site and regional scales, accurately simulating aircraft profiles of CO₂ concentration magnitudes (error <+- 4 ppm), indicating appropriate source sink distribution and realistic atmospheric transport. Hourly observations made at tall tower Angus were also well simulated by WRF-SPA (R² = 0.67, RMSE = 3.5 ppm, bias = 0.58 ppm). Analysis of CO₂ tracers at tall tower Angus show an increase in the seasonal error between WRF-SPA simulated atmospheric CO₂ and observations, which coincides with simulated cropland harvest. WRF-SPA does not simulate uncultivated land associated with agriculture, which in Scotland represents 36 % of agricultural holdings. Therefore, uncultivated land components may provide an explanation for the increase in model-data error. Interannual variation in weather is indicated to have a greater impact on ecosystem specific contributions to atmospheric CO₂ concentrations at Angus than variation in surface activity. In a model experiment, afforestation of Scotland was simulated to test the impact on Scotland’s carbon balance. The changes were shown to be potentially detectable by observations made at tall tower Angus. Afforestation results in a reduction in atmospheric CO₂ concentrations by up to 0.6 ppm at seasonal time scales at tall tower Angus. Detection of changes in forest surface net CO₂ uptake flux due to afforestation was improved through the use of a network of tall towers (R² = 0.83) compared to tall tower Angus alone (R² = 0.75).
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Rahman, Abdullah Faizur 1963. "Monitoring regional-scale surface hydrologic processes using satellite remote sensing." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/191212.

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Satellite-based remotely sensed data were used to estimate regional-scale surface energy fluxes and a water deficit index of a semi-arid heterogeneous region in southeast Arizona. Spectral reflectance and radiometric temperature of the surface, derived from the digital counts of TM bands of LANDSAT-5 satellite, were used for this purpose. These reflectance and temperature, along with conventional meteorological information of the region, were used as inputs to numerical models which estimate surface energy fluxes. Point-based meteorological data of the region were spatially extrapolated over a grid of 120 m X 120 m so that it could be used with the spatially continuous remotely sensed data. The water deficit index (WDI) was estimated using surface temperature and a spectral vegetation index, "soil adjusted vegetation index" (SAVI). The surface fluxes were net radiation flux, sensible heat flux, soil heat flux and latent heat flux. Measured values obtained from the meteorological flux measurement (METFLUX) stations in the study area were compared with the modeled fluxes. Latent heat flux (LE) was the most important one to estimate in the scope of this study. The method of spatially extrapolating the point-based meteorological information and combining with the remotely sensed data produced good estimation of LE for the region, with a mean absolute difference (MAD) of 65 W/m² over a range of 67 to 196 W/m² . Also it was found that the numerical models that were previously used to estimate daily LE values from a region using mid-day remotely sensed data (mostly from NOAAAVHRR) can also be used with the mid-morning remotely sensed data (from LANDSAT). Out of the two models tested for this purpose (`Seguin-Itier' and 'Jackson' models), one was found to need some modification so that it could use mid-morning remotely sensed data as inputs. The other was found to be useable as it is, without any modification. Outputs from both models compared well with the measured fluxes from the METFLUX stations. In an effort of estimating the water deficit of the different biomes of the region, WDI of the biomes were estimated. The main goal of this effort was to be able to monitor the surface hydrologic conditions of the region using remotely sensed vegetation and surface information, and minimum ground data. Good estimation of the water deficit condition of the area were obtained by this method. This method was found to be sensitive to a few of the ground information such as wind speed and leaf area index (LAI). It was also found that if the required ground data were correctly estimated, this method could be used as an operational procedure for monitoring the vegetation water stress of the biomes and hence for better management of the region.
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Books on the topic "Regional scale"

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(Firm), Roger Lascalles, ed. Tuscany: Large scale regional map. Brentford: R.Lascelles, 1993.

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Zittoun, Tania. Sociocultural Psychology on the Regional Scale. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-33066-8.

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Major, David C., and Harry E. Schwarz. Large-Scale Regional Water Resources Planning. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2011-8.

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Melas, Dimitrios, and Dimiter Syrakov, eds. Air Pollution Processes in Regional Scale. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1071-9.

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Dimitrios, Melas, and Syrakov D, eds. Air pollution processes in regional scale. Dordrecht: Kluwer Academic Publishers, 2003.

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Demetrios, Melas, and Syrakov D, eds. Air pollution processes in regional scale. Dordrecht: Kluwer Academic, 2003.

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Instytut Geografii i Przestrzennego Zagospodarowania im. Stanisława Leszczyckiego, ed. Transport accessibility at regional scale in Europe. Warszawa: Institute of Geography and Spatial Organisation. Polish Academy of Sciences, 2013.

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NATO Advanced Workshop on Regional and Global Ozone Interaction and its Environmental Consequences (1987 Lillehammer, Norway). Tropospheric ozone: Regional and global scale interactions. Dordrecht: D. Reidel Pub. Co., 1988.

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Major, David C. Large-scale regional water resources planning: The North Atlantic regional study. Dordrecht: Kluwer Academic Publishers, 1990.

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Uribe-Echevarría, Francisco. Small-scale manufacturing and regional industrialization: The urban and regional development perspective. The Hague, Netherlands: Publications Office, Institute of Social Studies, 1991.

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Book chapters on the topic "Regional scale"

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Damborenea, Susana E., Javier Echevarría, and Sonia Ros-Franch. "Regional Scale." In Southern Hemisphere Palaeobiogeography of Triassic-Jurassic Marine Bivalves, 45–77. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5098-2_4.

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Kotta, Jonne, and Jon D. Witman. "Regional-Scale Patterns." In Ecological Studies, 89–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/b76710_6.

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Goldberg, Paul, and Richard I. Macphail. "Regional Scale Geoarchaeology." In Practical and Theoretical Geoarchaeology, 7–9. Malden, MA USA: Blackwell Publishing Ltd., 2013. http://dx.doi.org/10.1002/9781118688182.part1.

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Kalma, Jetse D., Gregory P. Laughlin, Joseph M. Caprio, and Paul J. C. Hamer. "Regional Scale Frost Risk Mapping." In Advances in Bioclimatology, 44–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-58132-8_5.

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Ma, Zongjin, Zhengxiang Fu, Yingzhen Zhang, Chengmin Wang, Guomin Zhang, and Defu Liu. "Large-scale Regional Anomalous Phenomena." In Earthquake Prediction, 189–205. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-61269-5_9.

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Sykes, Olivier, and Alexander Nurse. "The scale of the century? – the new city regionalism in England and some experiences from Liverpool." In Regions and Regional Planning, 122–44. London: Routledge, 2022. http://dx.doi.org/10.4324/9781003294252-8.

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Galmarini, S. "Evaluation Techniques for Regional Models." In Air Pollution Processes in Regional Scale, 65–78. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1071-9_8.

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Zlatev, Z. "Large Scale Air Pollution Models." In Air Pollution Processes in Regional Scale, 373–84. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1071-9_39.

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Gryning, S. E. "Meteorological Data for Regional Model Validation." In Air Pollution Processes in Regional Scale, 107–19. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1071-9_12.

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Steyn, D. G. "Mesoscale Circulations and Regional Air Pollution." In Air Pollution Processes in Regional Scale, 281–94. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-007-1071-9_31.

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Conference papers on the topic "Regional scale"

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Greenfield, Michael W., and Alex Grant. "Regional-Scale Liquefaction Analyses." In Geo-Congress 2022. Reston, VA: American Society of Civil Engineers, 2022. http://dx.doi.org/10.1061/9780784484043.039.

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Lewis, Janelle Branch, Adam Dassey, Daryl Grubb, and Scott Marshall. "NORM Scale Removal Using a High-Power Fiber Laser Beam Delivery." In SPE Western Regional Meeting. SPE, 2021. http://dx.doi.org/10.2118/205400-ms.

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Abstract In oil and gas operations, there is a potential for NORM scale to accumulate on process piping and equipment. This scale can be removed prior to recycling or disposal of the material, yet common removal methods may be costly, time consuming, or create large volumes of secondary waste streams that must be managed. The feasibility of using a laser beam delivery to remove NORM scale was investigated because of its potential to reduce the time and cost associated with scale removal without creating large secondary waste streams. Results from this study indicate that a laser beam delivery could be an effective method to remove NORM scale from a steel surface. Background levels of alpha and beta surface contamination and gamma exposure rate were achieved for certain pipe sections when applying a laser power of at least 5 kW. Alternative laser powers, linear speeds, or incident angles may optimize the removal efficiency for thicker scales or scales with higher surface contamination or gamma exposure rates.
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Coleman, Tristan. "Regional Scale Atmospheric Transportation Modelling." In SPE Middle East Health, Safety, Environment & Sustainable Development Conference and Exhibition. Society of Petroleum Engineers, 2014. http://dx.doi.org/10.2118/170367-ms.

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Tague, J. R., G. F. Hollman, and G. Chaffin. "Downhole Video Optimizes Scale-Removal Program." In SPE Western Regional Meeting. Society of Petroleum Engineers, 1999. http://dx.doi.org/10.2118/54600-ms.

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Rush, Tyler. "Aerodynamic Efficiency Analysis of Small-Scale Wind Turbine Blades." In 2023 Regional Student Conferences, Region I - North East. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2023. http://dx.doi.org/10.2514/6.2023-71361.

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Yuan, Changli, Mojdeh Delshad, and Mary Fanett Wheeler. "Parallel Simulations of Commercial-Scale Polymer Floods." In SPE Western Regional Meeting. Society of Petroleum Engineers, 2010. http://dx.doi.org/10.2118/132441-ms.

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Sahni, Akshay, Dale Beeson, and David A. DiCarlo. "Field Scale Production Decline Characteristics During Gravity Drainage." In SPE Western Regional Meeting. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/154327-ms.

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Abouie, A., M. Tagavifar, A. Sanaei, and K. Sepehrnoori. "Production Loss by Scale Formation in Unconventional Reservoirs." In SPE Western Regional Meeting. Society of Petroleum Engineers, 2018. http://dx.doi.org/10.2118/190148-ms.

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Nagao, Masahiro, Sathish Sankaran, and Zhenyu Guo. "Distributed Agent Optimization for Large-Scale Network Models." In SPE Western Regional Meeting. SPE, 2023. http://dx.doi.org/10.2118/213022-ms.

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Abstract Optimization of production networks is key for managing efficient hydrocarbon production as part of closed-loop asset management. Large-scale surface network optimization is a challenging task that involves high nonlinearity with numerous constraints. In existing tools, the computational cost of solving the surface network optimization can exponentially increase with the size and complexities of the network using traditional approaches involving nonlinear programming methods. In this study, we accelerate the large-scale surface network optimization by using a distributed agent optimization algorithm called alternating direction method of multipliers (ADMM). We develop and apply the ADMM algorithm for large-scale network optimization with over 1000 wells and interconnecting pipelines. In the ADMM framework, a large-scale network system is broken down into many small sub-network systems. Then, a smaller optimization problem is formulated for each sub-network. These sub-network optimization problems are solved in parallel using multiple computer cores so that the entire system optimization will be accelerated. A large-scale surface network involves many inequality and equality constraints, which are effectively handled by using augmented Lagrangian method to enhance the robustness of convergence quality. Additionally, proxy or hybrid models can also be used for pipe flow and pressure calculation for every network segment to further speed up the optimization. The proposed ADMM optimization method is validated by several synthetic cases. We first apply the proposed method to surface network simulation problems of various sizes and complexities (configurations, fluid types, pressure regimes, etc.), where the pressure for all nodes and fluxes in all links will be calculated with a specified separator pressure and reservoir pressures. High accuracy was obtained from the ADMM framework compared with a commercial simulator. Next, the ADMM is applied to network optimization problems, where we optimize the pressure drop across a surface choke for every well to maximize oil production. In a large-scale network case with over 1000 wells, we achieve 2X – 3X speedups in computation time with reasonable accuracy from the ADMM framework compared with benchmarks. Finally, we apply the proposed method to a field case, and validate that the ADMM framework properly works for the actual field applications. A novel framework for surface network optimization was developed using the distributed agent optimization algorithm. The proposed framework provides superior computational efficiency for large- scale network optimization problems compared with existing benchmark methods. It enables more efficient and frequent decision-making of large-scale petroleum field management to maximize the hydrocarbon production subject to numerous system constraints.
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Price, Tanner C., Christopher J. Rathman, and Kurt Rouser. "Design and Evaluation of a Small-Scale Hybrid Rocket Test Stand." In 2023 Regional Student Conferences, Region I - North East. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2023. http://dx.doi.org/10.2514/6.2023-71109.

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Reports on the topic "Regional scale"

1

Flatte, Stanley M. Effects of Small-Scale Heterogeneities on Regional Propagation. Fort Belvoir, VA: Defense Technical Information Center, January 1990. http://dx.doi.org/10.21236/ada222810.

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2

Ploeger, S. K., M. J. Nollet, M. Sawada, and A. Abo El Ezz. Inventory models for regional scale natural hazards risk assessment. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2018. http://dx.doi.org/10.4095/308352.

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3

Hinzman, Larry D., William Robert Bolton, and Jessica (Cable) Young-Robertson. Toward the Development of a Cold Regions Regional-Scale Hydrologic Model, Final Project Report. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1415347.

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4

Lindsay, J. B. Opportunities and challenges provided by regional-scale LiDAR data sets. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2019. http://dx.doi.org/10.4095/313594.

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5

Testor, Pierre, Thibaut Wagener, Anthony Bosse, Remy Asselot, Virginie Thierry, and Johannes Karstensen. Estimate of magnitude and drivers of regional carbon variability for both regions. EuroSea, 2022. http://dx.doi.org/10.3289/eurosea_d7.3.

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This deliverable provides an overview of EuroSea outcomes related to interior ocean carbon variability in deep convection areas in order to assess the linkage of these processes for the use in national climate action (NCA) plans delivered in the framework of the Paris Agreement. In summary, large-scale connectivity in the ocean does not allow clear delineation of patterns of regional carbon uptake across national boundaries, limiting an assessment of the Exclusive Economic Zones (EEZ) in light of NCA plans. This problem becomes already clear by a simple scale estimation: considering sluggish, open ocean (away from continental boundaries) advection speeds of 2 cm/s result in a “relocation” of any water parcel by roughly 630 km per year (or 3150 km in 5 years Paris Agreement carbon auditing period) and crossing national borders easily. (EuroSea Deliverable, D7.3)
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Campbell, Elliott, Joe Berry, Margaret Torn, Billesbach David, and Ulrike Seibt. Quantifying Carbon-Climate Processes at the Regional Scale Using Atmospheric Carbonyl Sulfide. Office of Scientific and Technical Information (OSTI), October 2013. http://dx.doi.org/10.2172/1095809.

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7

Brunsell, Nathaniel, David Mechem, and Chunsheng Ma. Assessing Regional Scale Variability in Extreme Value Statistics Under Altered Climate Scenarios. Office of Scientific and Technical Information (OSTI), February 2015. http://dx.doi.org/10.2172/1170412.

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8

Nema, Rohit, and Sooraj M. Raveendran. A Method for Estimating Distribution of Household Income at a Regional Scale. Indian Institute for Human Settlements, 2023. http://dx.doi.org/10.24943/amedhirs08.2023.

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Measuring income at household and individual levels has always been a conundrum in the policymaking and research space in India. Since a lot of policy decisions relating to the welfare of the most vulnerable are taken based on income data, it is imperative that an estimation method that captures the complex ground reality is used. In the existing literature, it is often observed that researchers take an approach that uniformly allocates the entire population into income brackets at the national or state level.
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RUGGERI, Paolo, Erwan GLOAGUEN, James IRVING, and Klaus HOLLIGER. Integration of Local-Scale Hydrological and Regional-Scale Geophysical Data Based on a non-Linear Bayesian Equential Simulation Approach. Cogeo@oeaw-giscience, September 2011. http://dx.doi.org/10.5242/iamg.2011.0250.

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10

Elliott, S., C. Y. J. Kao, and G. E. Streit. Regional to global scale atmospheric effects of the emerging mainland Chinese transportation system. Office of Scientific and Technical Information (OSTI), October 1997. http://dx.doi.org/10.2172/534495.

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