Thematische Bibliographien / Balance estimation

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Auswahl der wissenschaftlichen Literatur zum Thema „Balance estimation“

Autor: Grafiati

Veröffentlicht am 25. Juni 2021

Zuletzt aktualisiert am 13. Februar 2022

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Zeitschriftenartikel zum Thema "Balance estimation"

Behrmann, J. H. „A volume balance method for the estimation of finite deformation“. Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 1986, Nr. 8 (01.09.1986): 449–58. http://dx.doi.org/10.1127/njgpm/1986/1986/449.

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Sidorenko, Gennady Ivanovich. „Regional Carbon Balance and Rational Energetics Development“. Applied Mechanics and Materials 675-677 (Oktober 2014): 1701–5. http://dx.doi.org/10.4028/www.scientific.net/amm.675-677.1701.

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The technique of carbon balance estimation for large region is developed. The carbon balance estimations for the Republic of Karelia for 1990 are received. The estimations of direct and indirect carbon fluxes from fuel-energy complex for 1990 and 2000 are performed. The carbon fluxes in forest industry are determined and anthropogenic flux is calculated. The carbon fluxes determine potential for biofuels. Bioenergy has the potential for providing significant share of future energy supply.

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Jung, Hohyun, ChoongYeon Kim, Kyeong Jin Chun und Dohyung Lim. „ESTIMATION OF BALANCE CHARACTERISTICS UNDER MULTIDIRECTIONAL MOTION(GS7: Rehabilitation Biomechanics III)“. Proceedings of the Asian Pacific Conference on Biomechanics : emerging science and technology in biomechanics 2015.8 (2015): 191. http://dx.doi.org/10.1299/jsmeapbio.2015.8.191.

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Zack, Guido, Pilar Poncela, Eva Senra und Daniel Sotelsek. „Some New Results on the Estimation of Structural Budget Balance for Spain“. Revista Hacienda Pública Española 210, Nr. 3 (2014): 11–31. http://dx.doi.org/10.7866/hpe-rpe.14.3.1.

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Cummins, Donald P., David B. Stephenson und Peter A. Stott. „Optimal Estimation of Stochastic Energy Balance Model Parameters“. Journal of Climate 33, Nr. 18 (15.09.2020): 7909–26. http://dx.doi.org/10.1175/jcli-d-19-0589.1.

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AbstractThis study has developed a rigorous and efficient maximum likelihood method for estimating the parameters in stochastic energy balance models (with any k > 0 number of boxes) given time series of surface temperature and top-of-the-atmosphere net downward radiative flux. The method works by finding a state-space representation of the linear dynamic system and evaluating the likelihood recursively via the Kalman filter. Confidence intervals for estimated parameters are straightforward to construct in the maximum likelihood framework, and information criteria may be used to choose an optimal number of boxes for parsimonious k-box emulation of atmosphere–ocean general circulation models (AOGCMs). In addition to estimating model parameters the method enables hidden state estimation for the unobservable boxes corresponding to the deep ocean, and also enables noise filtering for observations of surface temperature. The feasibility, reliability, and performance of the proposed method are demonstrated in a simulation study. To obtain a set of optimal k-box emulators, models are fitted to the 4 × CO2 step responses of 16 AOGCMs in CMIP5. It is found that for all 16 AOGCMs three boxes are required for optimal k-box emulation. The number of boxes k is found to influence, sometimes strongly, the impulse responses of the fitted models.

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Roques, Lionel, Mickaël D. Chekroun, Michel Cristofol, Samuel Soubeyrand und Michael Ghil. „Parameter estimation for energy balance models with memory“. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 470, Nr. 2169 (08.09.2014): 20140349. http://dx.doi.org/10.1098/rspa.2014.0349.

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We study parameter estimation for one-dimensional energy balance models with memory (EBMMs) given localized and noisy temperature measurements. Our results apply to a wide range of nonlinear, parabolic partial differential equations with integral memory terms. First, we show that a space-dependent parameter can be determined uniquely everywhere in the PDE's domain of definition D , using only temperature information in a small subdomain E ⊂ D . This result is valid only when the data correspond to exact measurements of the temperature. We propose a method for estimating a model parameter of the EBMM using more realistic, error-contaminated temperature data derived, for example, from ice cores or marine-sediment cores. Our approach is based on a so-called mechanistic-statistical model that combines a deterministic EBMM with a statistical model of the observation process. Estimating a parameter in this setting is especially challenging, because the observation process induces a strong loss of information. Aside from the noise contained in past temperature measurements, an additional error is induced by the age-dating method, whose accuracy tends to decrease with a sample's remoteness in time. Using a Bayesian approach, we show that obtaining an accurate parameter estimate is still possible in certain cases.

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Solomko, M. N. „Budget balance: approaches to definition and estimation“. Vestnik Universiteta, Nr. 3 (12.04.2019): 143–50. http://dx.doi.org/10.26425/1816-4277-2019-3-143-150.

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The challenges of local budgets’ balance have been examined. Budget defi it (budget surplus) is one of the main budget characteristics, and indicators of balance are included in the number of the indicators of financial stability of public legal entities. The overview of diff rent approaches to budget balance definition allowed to identify their relationship, including manifested in the system of indicators for assessing the quality of balance. Dynamics of absolute and relative indicators of balance of local budgets has been analyzed, the structure of sources of financing of their deficit has been considered, the conclusion about a significant role of measures of budgetary regulation in maintenance of balance of local budgets has been made. Additions to the existing approaches to assessing the quality of budget balance have been proposed.

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Simila, Heidi, Jani Mantyjarvi, Juho Merilahti, Mikko Lindholm und Miikka Ermes. „Accelerometry-Based Berg Balance Scale Score Estimation“. IEEE Journal of Biomedical and Health Informatics 18, Nr. 4 (Juli 2014): 1114–21. http://dx.doi.org/10.1109/jbhi.2013.2288940.

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Jiang, Xuemei, Yishu Kong, Xinru Li, Cuihong Yang und Xikang Chen. „Re-estimation of China-EU trade balance“. China Economic Review 54 (April 2019): 350–66. http://dx.doi.org/10.1016/j.chieco.2019.01.008.

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Thibert, E., und C. Vincent. „Best possible estimation of mass balance combining glaciological and geodetic methods“. Annals of Glaciology 50, Nr. 50 (2009): 112–18. http://dx.doi.org/10.3189/172756409787769546.

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AbstractVariance analysis of the long time series of mass balances recorded on Glacier de Sarennes (45°07’ N, 6°07’ E) France, since 1949 shows that the variability can be separated linearly in two spatial and temporal terms. Annual balances deviate from their mean values over the period of record by an annual amount that is uniform over the glacier. Annual balances at each stake are therefore highly correlated, and sampling at a single site would be acceptable to record the annual deviation. A result of the linear character of the variance is the possibility of obtaining a systematic error-free estimate of the annual glacier-total budget by combining the mean annual balance obtained from photogrammetry and the annual deviation obtained from the variance analysis, rather than using the traditional area integration of balances at each stake.

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Dissertationen zum Thema "Balance estimation"

Chen, Liping Acevedo Miguel Felipe. „Soil characteristics estimation and its application in water balance dynamics“. [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-9789.

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Chen, Liping. „Soil Characteristics Estimation and Its Application in Water Balance Dynamics“. Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9789/.

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This thesis is a contribution to the work of the Texas Environmental Observatory (TEO), which provides environmental information from the Greenbelt Corridor (GBC) of the Elm Fork of the Trinity River. The motivation of this research is to analyze the short-term water dynamic of soil in response to the substantial rainfall events that occurred in North Texas in 2007. Data collected during that year by a TEO soil and weather station located at the GBC includes precipitation, and soil moisture levels at various depths. In addition to these field measurements there is soil texture data obtained from lab experiments. By comparing existing water dynamic models, water balance equations were selected for the study as they reflect the water movement of the soil without complicated interrelation between parameters. Estimations of water flow between soil layers, infiltration rate, runoff, evapotranspiration, water potential, hydraulic conductivity, and field capacity are all obtained by direct and indirect methods. The response of the soil at field scale to rainfall event is interpreted in form of flow and change of soil moisture at each layer. Additionally, the analysis demonstrates that the accuracy of soil characteristic measurement is the main factor that effect physical description. Suggestions for model improvement are proposed. With the implementation of similar measurements over a watershed area, this study would help the understanding of basin-scale rainfall-runoff modeling.

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Rim, Chang-Soo. „Daily estimation of local evapotranspiration using energy and water balance approaches“. Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/191190.

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Meteorological and environmental (i.e. soil water content) data measured from semiarid watersheds (Lucky Hills and Kendall) during the summer rainy and winter periods were used to study the interrelationships between variables, and to evaluate the effects of variables on the daily estimation of actual evapotranspiration (AET). The relationship between AET and potential evapotranspiration (PET) as a function of an environmental factor was the major consideration of this research. The relationship between AET and PET as a function of soil water content as suggested by Thornthwaite-Mather, Morton and Priestley-Taylor was studied to determine its applicability to the study area. Furthermore, multiple linear regression (MLR) analysis was employed to evaluate the order of importance of the meteorological and soil water factors involved. Finally, the information gained was used for MLR model development. The results of MLR analysis showed that the combined effects of available energy, soil water content and wind speed were responsible for 77 % of the observed variations in AET at Lucky Hills watershed and 70 % at Kendall watershed during the summer rainy period. The analyses also indicated that the combined effects of available energy, vapor pressure deficit and wind speed were responsible for 70 % of the observed variations in AET at Lucky Hills watershed and 72 % at Kendall watershed during the winter period. However, the test results of three different approaches, using the relationships between AET and PET as a function of soil water content indicated some inadequacy. The low correlation between PET, AET, and soil moisture conditions raised some doubt concerning the validity of methods developed elsewhere, and indicated the effects of energy availability on the relationship between PET, AET, and soil water content regardless of the soil water condition. In contrast, agreement between observed AET and estimated AET from MLR models during the summer rainy and winter periods at both watersheds indicated that MLR models can give reasonable estimates of AET, at least under the climatic conditions in which the formulae were developed.

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Jaedicke, Christian. „Lake Evaporation Estimation by Isotope, Energy Balance and Bulk Aerodynamic Methods“. Thesis, Uppsala universitet, Institutionen för geovetenskap, 1997. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-393212.

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Lake evaporation from a shallow lake in central Sweden has been estimated using three independent methods from measurements during summer 1995. The applied isotope method is a combination of the water and isotope mass balance. Its main feature is that inflows need not to be measured. Only knowledge of their isotopic content is sufficient. For calculations by the bulk aerodynamic method a computer program was applied, which takes into account the different conditions of stratification. The energy balance of the lake was determined by using the short and long wave radiation, heat storage and advective heat energy. Measurements were done on a small island and at a mast in the middle of the lake. Evaporation estimated by all the methods varied from -1.1 to 5.0 mm/d during the summer months 1995. Values estimated by the energy balance method agreed well with those from the bulk aerodynamic method. Evaporation estimates from the isotope method a showed fairly good agreement with the two other methods, excepting a few periods. It was found that both the isotope as well as the energy balance method are sensitive to errors in lake volume. Both methods carry some uncertainty due to their dependence on water balance components, some of which are difficult to determine. The bulk aerodynamic method is independent of the water balance of the lake. A good accuracy can be achieved using only four variables i.e. wind speed, relative humidity, skin and air temperature.
Avdunstningen från den grunda sjön Tämnaren i centrala Sverige bestämdes med tre oberoende metoder ur mätningar från sommaren 1995. Den använda isotopmetoden är en kombination av vatten- och isotopbalansen. Dess viktigaste fördel är att inflödet inte behöver mätas, utan att kännedom om isotophalten är tillräcklig. För beräkningarna med den bulk-aerodynamiska metoden användes ett datorprogram som tar hänsyn till atmosfärens stabilitet. Energibalansen beräknades ur kort- och långvågsstrålningen, värmelagringen och den tillförda energin. Mätningarna utfördes dels på en liten ö och dels vid en mast mitt i sjön. Avdunstningen varierade mellan -1.1 mmd-1 till 5.0 mmd-1. Resultaten från energibalansmetoden överenstämde bra med resultaten från den bulk-aerodynamiska metoden. Även resultaten från isotopmetoden överenstämde bra med resultaten från de två andra metoderna, med undantag av några få perioder. Både isotop- och energibalansmetoden var känsliga för feluppskattningar av sjövolymen. Båda metoderna innehåller osäkerheter som en följd av deras beroende på vissa av vattenbalansens komponenter, som är svåra att bestämma. Den bulk-aerodynamiska metoden är oberoende av sjöns vattenbalans och en bra noggranhet kan uppnås med mätningar av endast de fyra variablerna vindhastighet, relativ fuktighet, yt- och lufttemperatur.
Die Verdunstung von einem ﬂachen See in Zentralschweden wurde mit Hilfe von drei unabhängigen Methoden bestimmt. Die Messungen wurden im Sommer 1995 durchgeführt. Die angewandte Isotopenmethode ist eine Kombination aus Wasserbilanz and lsotop-Massenbilanz. Das besondere Merkmal dieser Methode ist es, daß Zuflüsse nicht gemessen werden müssen. Es genügt, ihre isotopische Zusammensetzung zu kennen. Für die Berechungen mit der bulk-aerodynamischen Methode wurde ein Computerprogamm verwendet, das die unterschiedlichen atmosphärischen Schichtungen berücksichtigt. Die Energiebilanz des Sees wurde mit Hilfe der kurz- und langwelligen Strahlung, der gespeicherten Energie im See und der durch Zuflüsse und Niederschlag zugeführten Energie bestimmt. Die Messungen wurden auf einer kleiner Insel und an einem Mast in der Mitte des Sees durchgeführt. Die Verdunstung reichte von -1.1 mmd-1 bis 5.0 mmd-1 während der Sommermonate 1995. Die Ergebnisse der Energiebilanz stimmten gut mit den Ergebnissen der bulk-aerodynamischen Methode überein. Die Ergebnisse der Isotopenmethode stimmten relativ gut mit den Ergebnissen der beiden anderen Methoden überein, mit Ausnahme einiger Perioden. Es wurde festgestellt, daß sowohl die Isotopenmethode als auch die Energiebilanzmethode sensibel auf Fehler im Seevolumen reagieren. Beide Methoden enthalten einige Unsicherheiten wegen ihrer Abhängikeit von Wasserbilanzkomponenten, die z.T. schwer zu bestimmen sind. Die bulk-aerodynamische Methode dagegen ist unabhängig von der Wasserbilanz des Sees. Gute Ergebnisse können mit nur vier zu messenden Variablen erreicht werden (Windgeschwindigkeit, relative Luftfeuchtigkeit, Wasseroberflächen- und Lufttemperatur).

Parts of the thesis work later published as:

Saxena, R., Jaedicke, C., & Lundin, L. C. (1999). Comparison of lake evaporation estimated by isotope mass-balance, bulk-aerodynamic and bowen ratio methods. Phys. Chem Earth (B), Vol. 24, No. 7, pp. 851–859.

and

Saxena, R., & Jaedicke, C. (1997). Estimation of vapour flux from a shallow lake by oxygen -18 mass balance. Isotope Techniques in the Study of Environmental Change, 225–237. Vienna: IAEA-SM-349/23.

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Eilers, V. H. M. „The estimation of groundwater recharge by soil water balance in semi-arid regions“. Thesis, Cranfield University, 2002. http://dspace.lib.cranfield.ac.uk/handle/1826/4215.

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Quantification of groundwater recharge is a crucial prerequisite for sustainable groundwater resource management, particularly in semi-arid areas where there are large demands for groundwater supplies. This research presents an alternative approach for recharge estimation based on the soil water balance technique. The purpose is to develop a model which provides a suitable balance between physical credibility and data which realistically can be gathered. A spreadsheet model was written based on the conceptual representation of the principal physical processes which actually affect recharge in a semi-arid area. Alternative procedures were included in order to represent: (a) the estimation of runoff, (b) the inclusion of the period with predominant bare soil evaporation and (c) the accounting for evapotranspiration following rainfall on dry soil. The model was tested using real data from a semi-arid region (Northeast Nigeria) making use of selected periods of days and years in order to illustrate the principal model characteristics. The results were presented in the form of diagrams and graphs helping to visualise the interactions between the physical components and the effect of the additional procedures on recharge estimation. The credibility of the model was investigated using an alternative concept of 'analysis of plausibility'. This concept makes use of as wide as possible a range of quantitative and qualitative information from the hydrological system in order to verify the robustness of the model when extensive datasets required by conventional validation techniques are not available. The results suggested that the modelled recharge is physically sound and it is in line with the overall determination of recharge in semi-arid areas by a range of methods. The soil water balance model was utilised to explore important aspects of recharge in semi-arid regions showing the effect of the field variability on the model's output. The preliminary results show that the developed concept reasonably represents the inherent field variability, thus corroborating the strength of the approach for recharge estimation in semi-arid regions.

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Runeskog, Henrik. „Continuous Balance Evaluation by Image Analysis of Live Video : Fall Prevention Through Pose Estimation“. Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-297541.

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The deep learning technique Human Pose Estimation (or Human Keypoint Detection) is a promising field in tracking a person and identifying its posture. As posture and balance are two closely related concepts, the use of human pose estimation could be applied to fall prevention. By deriving the location of a persons Center of Mass and thereafter its Center of Pressure, one can evaluate the balance of a person without the use of force plates or sensors and solely using cameras. In this study, a human pose estimation model together with a predefined human weight distribution model were used to extract the location of a persons Center of Pressure in real time. The proposed method utilized two different methods of acquiring depth information from the frames - stereoscopy through two RGB-cameras and with the use of one RGB-depth camera. The estimated location of the Center of Pressure were compared to the location of the same parameter extracted while using the force plate Wii Balance Board. As the proposed method were to operate in real-time and without the use of computational processor enhancement, the choice of human pose estimation model were aimed to maximize software input/output speed. Thus, three models were used - one smaller and faster model called Lightweight Pose Network, one larger and accurate model called High-Resolution Network and one model placing itself somewhere in between the two other models, namely Pose Residual Network. The proposed method showed promising results for a real-time method of acquiring balance parameters. Although the largest source of error were the acquisition of depth information from the cameras. The results also showed that using a smaller and faster human pose estimation model proved to be sufficient in relation to the larger more accurate models in real-time usage and without the use of computational processor enhancement.
Djupinlärningstekniken Kroppshållningsestimation är ett lovande medel gällande att följa en person och identifiera dess kroppshållning. Eftersom kroppshållning och balans är två närliggande koncept, kan användning av kroppshållningsestimation appliceras till fallprevention. Genom att härleda läget för en persons tyngdpunkt och därefter läget för dess tryckcentrum, kan utvärdering en persons balans genomföras utan att använda kraftplattor eller sensorer och att enbart använda kameror. I denna studie har en kroppshållningsestimationmodell tillsammans med en fördefinierad kroppsviktfördelning använts för att extrahera läget för en persons tryckcentrum i realtid. Den föreslagna metoden använder två olika metoder för att utvinna djupseende av bilderna från kameror - stereoskopi genom användning av två RGB-kameror eller genom användning av en RGB-djupseende kamera. Det estimerade läget av tryckcentrat jämfördes med läget av samma parameter utvunnet genom användning av tryckplattan Wii Balance Board. Eftersom den föreslagna metoden var ämnad att fungera i realtid och utan hjälp av en GPU, blev valet av kroppshållningsestimationsmodellen inriktat på att maximera mjukvaruhastighet. Därför användes tre olika modeller - en mindre och snabbare modell vid namn Lightweight Pose Network, en större och mer träffsäker modell vid namn High-Resolution Network och en model som placerar sig någonstans mitt emellan de två andra modellerna gällande snabbhet och träffsäkerhet vid namn Pose Resolution Network. Den föreslagna metoden visade lovande resultat för utvinning av balansparametrar i realtid, fastän den största felfaktorn visade sig vara djupseendetekniken. Resultaten visade att användning av en mindre och snabbare kroppshållningsestimationsmodellen påvisar att hålla måttet i jämförelse med större och mer träffsäkra modeller vid användning i realtid och utan användning av externa dataprocessorer.

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Sun, Xianfeng. „A water balance approach to groundwater recharge estimation in Montagu area of the Western Klein Karoo“. Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=init_4142_1178702615.

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This aim of this study was to improve the understanding and functioning of the Table Mountain Group aquifer system and contribute to the sustainable development of this potential source for water supply in the Montagu area.

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Farhadi, Leila. „Estimation of land surface water and energy balance flux components and closure relation using conditional sampling“. Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70757.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2012.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 348-364).
Models of terrestrial water and energy balance include numerical treatment of heat and moisture diffusion in the soil-vegetation-atmosphere continuum. These two diffusion and exchange processes are linked only at a few critical points. The performance and sensitivity of models are highly dependent on the nature of these linkages that are expressed as the closure function between heat and moisture dynamics. Land response to radiative forcing and partitioning of available energy into sensible and latent heat fluxes are dependant on the functional form. Since the function affects the surface fluxes, the influence reaches through the boundary layer and affects the lower atmosphere weather. As important as these closure functions are, they remain essentially empirical and untested across diverse conditions. It is critically important to develop observation-driven estimation procedures for the terrestrial water and energy closure problem, especially at the scale of modeling and with global coverage. In this dissertation a new approach to the estimation of key unknown parameters of water and energy balance equation and their closure relationship is introduced. This approach is based on averaging of heat and moisture diffusion equations conditioned on land surface temperature and moisture states respectively. The method is derived only from statistical stationarity and conservation statements of water and energy and thus it is scale free. The aim of this dissertation is to establish the theoretical basis for the approach and perform a global test using multi-platform remote sensing measurements. The feasibility of this approach is demonstrated at point-scale using synthetic data and flux-tower field site data. The method is applied to the mesoscale region of Gourma (West Africa) using multi-platform remote sensing data. The retrievals were verified against tower-flux field site data and physiographic characteristics of the region. The approach is used to find the functional form of the Evaporative Fraction (ratio of latent heat flux to sum of latent and sensible heat fluxes) dependence on soil moisture. Evaporative Fraction is a key closure function for surface and subsurface heat and moisture dynamics. With remote sensing data the dependence of this function on governing soil and vegetation characteristics is established.
by Leila Farhadi.
Ph.D.

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McCoy, Kurt J. „Estimation of vertical infiltration into deep Pittsburgh coal mines of WV-PA a fluid mass balance approach /“. Morgantown, W. Va. : [West Virginia University Libraries], 2002. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=2745.

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Thesis (M.S.)--West Virginia University, 2002.
Title from document title page. Document formatted into pages; contains x, 150 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references (p. 87-90).

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Sun, Jian. „Parameter estimation of coupled water and energy balance models based on stationarity constraints of soil moisture and temperature“. Thesis, Boston University, 2012. https://hdl.handle.net/2144/31613.

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Thesis (Ph.D.)--Boston University
PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.
A new method is developed for estimating the parameters of land surface water and energy balance models through enforcement of stationary constraints on soil moisture and temperature. Through conditional averaging of the water balance equation with respect to soil moisture and the energy balance equation with respect to surface temperature, a measure of stationarity is derived that approximates the errors present in predicted fluxes (e.g. evaporation, runoff, sensible heat, ground conduction) in terms of measured model inputs (e.g. precipitation, radiation, soil moisture and temperature). Minimization of the approximated error yields estimates of model parameters. The approach is distinct from traditional model calibration because the minimized error term does not depend on measurements of the predicted fluxes. This proposed method is applied to a land surface water and energy balance model similar to those used in global climate models. The approach is tested at two Ameriflux sites with continuous in-situ measurements of soil moisture, temperature, radiation, and surface turbulent fluxes (evapotranspiration and sensible heat). Fluxes estimated with the proposed method match field measurements approximately as well as those estimated by traditional calibration. Replacing the in-situ land surface temperature and soil moisture with estimates retrieved from satellite leads to minimal degradation of model performance. Sensitivity analysis at these sites demonstrates that increasing model complexity does not improve performance. With promising results from testing the approach at these field sites, the method is applied to estimate evapotranspiration over the Southern Great Plains region of North America. In this test, archived meteorological data and remotely sensed moisture and temperature are used to force the model. The spatial pattern of estimated mean annual evapotranspiration is in good agreement (RMSE of 8 Wm-2 , R 2 of 0.75) with published estimates derived from measured precipitation and streamflow. Estimated parameters are reasonably distributed and consistent with climate and vegetation patterns over the region. Because there are so few sites on earth where surface turbulent fluxes are measured, the proposed approach is more widely applicable than traditional calibration methods, and thus could be used, with satellite data, to estimate maps of land surface parameters required by global climate models.
2031-01-01

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Bücher zum Thema "Balance estimation"

Industry, Confederation of Indian, Hrsg. Estimation of energy & carbon balance of biofuels in India. New Delhi: Department of Biotechnology, Ministry of Science & Technology, Government of India, 2010.

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Seiichi, Katayama. Estimation of structural change in the import and export equations: An international comparison. Kobe, Japan: Institute of Economic Research, Kobe University of Commerce, 1985.

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Sinn, Stefan. Net external asset positions of 145 countries: Estimation and interpretation. Tübingen: J.C.B. Mohr, 1990.

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Scholz, M. J. Use of the HELP model to assist in estimation of heap leach water balance parameters. S.l: s.n, 1991.

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Gronberg, Jo Ann M. Estimation of a water budget for the central part of the western San Joaquin Valley, California. Sacramento, Calif: U.S. Dept. of the Interior, U.S. Geological Survey, 1992.

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Gronberg, JoAnn M. Estimation of a water budget for the central part of the western San Joaquin Valley, California. Sacramento, Calif: U.S. Dept. of the Interior, U.S. Geological Survey, 1992.

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Gronberg, JoAnn M. Estimation of a water budget for the central part of the western San Joaquin Valley, California. Sacramento, Calif: U.S. Dept. of the Interior, U.S. Geological Survey, 1992.

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Vasil'eva, Natal'ya. Mathematical models in the management of copper production: ideas, methods, examples. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1014071.

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Presents the current status in modelling of metallurgical processes considered by the model the mathematical model used in the description of the processes of copper production and their classification. Set out a system of methods and models in the field of mathematical modeling of technological processes, including balance sheet, statistics, optimization models, forecasting models and predictive models. For specific technological processes are developed: the model of the balance of the cycle of pyrometallurgical production of copper, polynomial model for prediction of matte composition on the basis of the passive experiment, predictive model of quantitative estimation of the copper content in the matte based on fuzzy logic. Of interest to students, postgraduates, teachers of technical universities, engineers and research workers who use mathematical methods for processing of data of laboratory and industrial experiments.

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Shapouri, Hosein. Estimating the net energy balance of corn ethanol. [Washington, D.C.]: U.S. Dept. of Agriculture, ERS, 1995.

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United States. Bureau of Economic Analysis. The balance of payments of the United States: Concepts, data sources, and estimating procedures. Washington, D.C: U.S. Dept. of Commerce, Bureau of Economic Analysis, 1990.

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Buchteile zum Thema "Balance estimation"

Griend, A. A., und R. J. Gurney. „Satellite Remote Sensing and Energy Balance Modelling for Water Balance Assessment in (Semi-) Arid Regions“. In Estimation of Natural Groundwater Recharge, 89–116. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-015-7780-9_6.

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Tarabella, Angela, und Barbara Burchi. „Factors Influencing Energy Balance: Estimation Methods“. In Aware Food Choices: Bridging the Gap Between Consumer Knowledge About Nutritional Requirements and Nutritional Information, 31–53. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23856-2_4.

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Khanduri, Tripti, und Praveen K. Thakur. „Snowmelt Runoff Estimation Using Energy-Balance Approach“. In Lecture Notes in Civil Engineering, 193–201. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-7067-0_15.

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Bacciu, Valentina, Donatella Spano und Michele Salis. „Emissions from Forest Fires: Methods of Estimation and National Results“. In The Greenhouse Gas Balance of Italy, 87–102. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-32424-6_6.

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Li, Yang, und Xiaojing Zhang. „Comparison of National Wealth of China and the US and Estimation of the Value of Land Resources in China“. In China's National Balance Sheet, 281–88. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4385-7_17.

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Matuszak, Z., und G. Nicewicz. „The Estimation of the Marine Main Diesel Engine Energy Balance“. In Lecture Notes in Mechanical Engineering, 281–89. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05203-8_40.

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Bouslihim, Yassine, Aicha Rochdi und Namira El Amrani Pazza. „Water Balance Estimation in Semiarid Mediterranean Watersheds Using SWAT Model“. In Recent Advances in Environmental Science from the Euro-Mediterranean and Surrounding Regions (2nd Edition), 1537–43. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-51210-1_245.

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Vachaud, G., L. Kengni, B. Normand und J. L. Thony. „Field estimation of water and nitrate balance for an irrigated crop“. In Crop Yield Response to Deficit Irrigation, 71–86. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4752-1_5.

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Ofwono, M., K. Dabrowska-Zielinska, J. Kaduk und V. Nicolás-Perea. „Satellite Derived Information for Drought Detection and Estimation of Water Balance“. In Earth Observation for Land and Emergency Monitoring, 285–99. Chichester, UK: John Wiley & Sons, Ltd, 2017. http://dx.doi.org/10.1002/9781118793787.ch15.

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Hedong, Sun, Cui Yongping, Cao Wen und Li Yanchun. „Reserves Estimation of Two-Layer Commingled Gas Well by Material Balance Method“. In Proceedings of the International Field Exploration and Development Conference 2018, 822–27. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-7127-1_76.

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Konferenzberichte zum Thema "Balance estimation"

Mummolo, Carlotta, Luigi Mangialardi und Joo H. Kim. „Estimation of Balance Stability States for Legged Robotic Systems“. In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59676.

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A three-dimensional criterion is provided for the estimation of balance stability states of legged robotic systems subject to various constraints. A general framework is established to evaluate the balance stability boundary of a given system in the state space of Center of Mass (COM) Cartesian position and velocity. For each assigned COM initial position, an optimization-based iterative algorithm finds the minimum and maximum COM initial velocity that the system can handle along a given direction, such that it maintains the capability to reach a final static equilibrium. The resulting set of velocity extrema constitutes the system’s balance stability boundary, which represents the sufficient condition to estimate falling states versus balanced states, according to the definitions provided herein. The COM state space domain identified with this approach contains all possible balanced states for the given legged system, with respect to the necessary physical, balancing, and design constraints. The balance state estimation is demonstrated for 1- and 2-degrees of freedom planar legged systems in single support. The domain identified by the balance stability boundary can be used as a “map” for the given legged system in which the distance from a given state to the domain boundaries can provide a quantitative measure of balance stability/instability.

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Groh, Andreas, Theodore E. Simos, George Psihoyios und Ch Tsitouras. „Parameter Estimation in Population Balance Models“. In ICNAAM 2010: International Conference of Numerical Analysis and Applied Mathematics 2010. AIP, 2010. http://dx.doi.org/10.1063/1.3498319.

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Wang, Po-Min, und Chiou-Shann Fuh. „Automatic White Balance with Color Temperature Estimation“. In 2007 Digest of Technical Papers International Conference on Consumer Electronics. IEEE, 2007. http://dx.doi.org/10.1109/icce.2007.341338.

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Pawignya, Harsa, Aji Prasetyaningrum, Endah R. Dyartanti, Tutuk D. Kusworo und Bambang Pramudono. „Estimation hydrophilic-lipophilic balance number of surfactants“. In PROCEEDINGS OF INTERNATIONAL SEMINAR ON MATHEMATICS, SCIENCE, AND COMPUTER SCIENCE EDUCATION (MSCEIS 2015). AIP Publishing LLC, 2016. http://dx.doi.org/10.1063/1.4941521.

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Hsu, Eugene, Tom Mertens, Sylvain Paris, Shai Avidan und Frédo Durand. „Light mixture estimation for spatially varying white balance“. In ACM SIGGRAPH 2008 papers. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1399504.1360669.

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van Aken, Johannes. „Multi-component balance load estimation using neural networks“. In 37th Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1999. http://dx.doi.org/10.2514/6.1999-940.

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Bandyopadhyay, Debmita, und Gulab Singh. „Mass Balance Estimation using Sar Data in Central Himalaya“. In IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium. IEEE, 2018. http://dx.doi.org/10.1109/igarss.2018.8517297.

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Ajisaka, Shimon, Sosuke Nakamura, Takashi Kubota und Hideki Hashimoto. „Physiological estimation of body balance for Affinitive Personal Vehicle“. In 2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE). IEEE, 2014. http://dx.doi.org/10.1109/isie.2014.6864754.

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LI, LEI, K. H. HOON und K. H. LOW. „BALANCE ANALYSIS AND OPTIMAL POSTURE ESTIMATION DURING ASSISTED WALKING“. In CLAWAR 2015: 18th International Conference on Climbing and Walking Robots and the Support Technologies for Mobile Machines. WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814725248_0013.

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Kong Guoling und Zhong Zaimin. „AMT starting process analysis and clutch thermal balance estimation model“. In 2011 International Conference on Electric Information and Control Engineering (ICEICE). IEEE, 2011. http://dx.doi.org/10.1109/iceice.2011.5777278.

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Berichte der Organisationen zum Thema "Balance estimation"

Cooper, Clay A., Ronald L. Hershey, John M. Healey und Brad F. Lyles. Estimation of Groundwater Recharge at Pahute Mesa using the Chloride Mass-Balance Method. Office of Scientific and Technical Information (OSTI), Juli 2013. http://dx.doi.org/10.2172/1113247.

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Ardanaz, Martín, Ana Corbacho, Alberto Gonzales und Nuria Tolsa Caballero. Structural Fiscal Balances in Latin America and the Caribbean: New Dataset and Estimations. Inter-American Development Bank, Juni 2015. http://dx.doi.org/10.18235/0000028.

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Steinberg, Dmitri. Reconstructing the Soviet National Economic Balance, 1965 - 1984: An Alternative Approach to Estimating Soviet Military Expenditures. Volume 1. Technical Discussion. Fort Belvoir, VA: Defense Technical Information Center, März 1986. http://dx.doi.org/10.21236/ada266500.

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Meneses, Juan Francisco, und José Luis Saboin. Growth Recoveries (from Collapses). Inter-American Development Bank, Juli 2021. http://dx.doi.org/10.18235/0003419.

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This paper analyzes the behavior of a long list of economic variables during episodes of recovery from an economic collapse. A set of stylized facts is proposed so as to depict what in this work is called \saygrowth recoveries. Through different estimation techniques, it is inferred under which conditions and policies the likelihood of experiencing a growth recovery increases. The results of the paper indicate that collapses tend to occur in countries with high dependence on natural resource rents, macroeconomic mismanagement, low levels of democratic accountability and rule of law and high levels of conflict. Recoveries, on the other hand, tend to be longer than collapses and are more likely to occur in contexts of: improved external conditions, less natural resource rents, balanced fiscal accounts, where the exchange rate corrects but within a more fixed exchange rate regime and a more restricted financial account, and where there are: rebounds in private consumption, increases in international trade and improvements on property rights.

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Steinberg, Dmitri. Reconstructing the Soviet National Economic Balance, 1965 - 1984: An Alternative Approach to Estimating Soviet Military Expenditures. Volume 2. Compilation of Working Tables. Fort Belvoir, VA: Defense Technical Information Center, März 1986. http://dx.doi.org/10.21236/ada266502.

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Downing, W. Logan, Howell Li, William T. Morgan, Cassandra McKee und Darcy M. Bullock. Using Probe Data Analytics for Assessing Freeway Speed Reductions during Rain Events. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317350.

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Rain impacts roadways such as wet pavement, standing water, decreased visibility, and wind gusts and can lead to hazardous driving conditions. This study investigates the use of high fidelity Doppler data at 1 km spatial and 2-minute temporal resolution in combination with commercial probe speed data on freeways. Segment-based space-mean speeds were used and drops in speeds during rainfall events of 5.5 mm/hour or greater over a one-month period on a section of four to six-lane interstate were assessed. Speed reductions were evaluated as a time series over a 1-hour window with the rain data. Three interpolation methods for estimating rainfall rates were tested and seven metrics were developed for the analysis. The study found sharp drops in speed of more than 40 mph occurred at estimated rainfall rates of 30 mm/hour or greater, but the drops did not become more severe beyond this threshold. The average time of first detected rainfall to impacting speeds was 17 minutes. The bilinear method detected the greatest number of events during the 1-month period, with the most conservative rate of predicted rainfall. The range of rainfall intensities were estimated between 7.5 to 106 mm/hour for the 39 events. This range was much greater than the heavy rainfall categorization at 16 mm/hour in previous studies reported in the literature. The bilinear interpolation method for Doppler data is recommended because it detected the greatest number of events and had the longest rain duration and lowest estimated maximum rainfall out of three methods tested, suggesting the method balanced awareness of the weather conditions around the roadway with isolated, localized rain intensities.

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Estimating ground-water inflow to lakes in central Florida using the isotope mass-balance approach. US Geological Survey, 2002. http://dx.doi.org/10.3133/wri024192.

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Estimating ground-water exchange with lakes using water-budget and chemical mass-balance approaches for ten lakes in ridge areas of Polk and Highlands counties, Florida. US Geological Survey, 1998. http://dx.doi.org/10.3133/wri984133.

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Financial Stability Report - September 2015. Banco de la República, August 2021. http://dx.doi.org/10.32468/rept-estab-fin.sem2.eng-2015.

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From this edition, the Financial Stability Report will have fewer pages with some changes in its structure. The purpose of this change is to present the most relevant facts of the financial system and their implications on the financial stability. This allows displaying the analysis more concisely and clearly, as it will focus on describing the evolution of the variables that have the greatest impact on the performance of the financial system, for estimating then the effect of a possible materialization of these risks on the financial health of the institutions. The changing dynamics of the risks faced by the financial system implies that the content of the Report adopts this new structure; therefore, some analyses and series that were regularly included will not necessarily be in each issue. However, the statistical annex that accompanies the publication of the Report will continue to present the series that were traditionally included, regardless of whether or not they are part of the content of the Report. In this way we expect to contribute in a more comprehensive way to the study and analysis of the stability of the Colombian financial system. Executive Summary During the first half of 2015, the main advanced economies showed a slow recovery on their growth, while emerging economies continued with their slowdown trend. Domestic demand in the United States allowed for stabilization on its average growth for the first half of the year, while other developed economies such as the United Kingdom, the euro zone, and Japan showed a more gradual recovery. On the other hand, the Chinese economy exhibited the lowest growth rate in five years, which has resulted in lower global dynamism. This has led to a fall in prices of the main export goods of some Latin American economies, especially oil, whose price has also responded to a larger global supply. The decrease in the terms of trade of the Latin American economies has had an impact on national income, domestic demand, and growth. This scenario has been reflected in increases in sovereign risk spreads, devaluations of stock indices, and depreciation of the exchange rates of most countries in the region. For Colombia, the fall in oil prices has also led to a decline in the terms of trade, resulting in pressure on the dynamics of national income. Additionally, the lower demand for exports helped to widen the current account deficit. This affected the prospects and economic growth of the country during the first half of 2015. This economic context could have an impact on the payment capacity of debtors and on the valuation of investments, affecting the soundness of the financial system. However, the results of the analysis featured in this edition of the Report show that, facing an adverse scenario, the vulnerability of the financial system in terms of solvency and liquidity is low. The analysis of the current situation of credit institutions (CI) shows that growth of the gross loan portfolio remained relatively stable, as well as the loan portfolio quality indicators, except for microcredit, which showed a decrease in these indicators. Regarding liabilities, traditional sources of funding have lost market share versus non-traditional ones (bonds, money market operations and in the interbank market), but still represent more than 70%. Moreover, the solvency indicator remained relatively stable. As for non-banking financial institutions (NBFI), the slowdown observed during the first six months of 2015 in the real annual growth of the assets total, both in the proprietary and third party position, stands out. The analysis of the main debtors of the financial system shows that indebtedness of the private corporate sector has increased in the last year, mostly driven by an increase in the debt balance with domestic and foreign financial institutions. However, the increase in this latter source of funding has been influenced by the depreciation of the Colombian peso vis-à-vis the US dollar since mid-2014. The financial indicators reflected a favorable behavior with respect to the historical average, except for the profitability indicators; although they were below the average, they have shown improvement in the last year. By economic sector, it is noted that the firms focused on farming, mining and transportation activities recorded the highest levels of risk perception by credit institutions, and the largest increases in default levels with respect to those observed in December 2014. Meanwhile, households have shown an increase in the financial burden, mainly due to growth in the consumer loan portfolio, in which the modalities of credit card, payroll deductible loan, revolving and vehicle loan are those that have reported greater increases in risk indicators. On the side of investments that could be affected by the devaluation in the portfolio of credit institutions and non-banking financial institutions (NBFI), the largest share of public debt securities, variable-yield securities and domestic private debt securities is highlighted. The value of these portfolios fell between February and August 2015, driven by the devaluation in the market of these investments throughout the year. Furthermore, the analysis of the liquidity risk indicator (LRI) shows that all intermediaries showed adequate levels and exhibit a stable behavior. Likewise, the fragility analysis of the financial system associated with the increase in the use of non-traditional funding sources does not evidence a greater exposure to liquidity risk. Stress tests assess the impact of the possible joint materialization of credit and market risks, and reveal that neither the aggregate solvency indicator, nor the liquidity risk indicator (LRI) of the system would be below the established legal limits. The entities that result more individually affected have a low share in the total assets of the credit institutions; therefore, a risk to the financial system as a whole is not observed. José Darío Uribe Governor

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