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Добірка наукової літератури з теми "Spatial moments"

Автор: Grafiati

Опубліковано: 19 жовтня 2022

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Статті в журналах з теми "Spatial moments"

Raupach, Timothy H., and Alexis Berne. "Invariance of the Double-Moment Normalized Raindrop Size Distribution through 3D Spatial Displacement in Stratiform Rain." Journal of Applied Meteorology and Climatology 56, no. 6 (June 2017): 1663–80. http://dx.doi.org/10.1175/jamc-d-16-0316.1.

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AbstractDouble-moment normalization of the drop size distribution (DSD) summarizes the DSD in a compact way, using two of its statistical moments and a “generic” double-moment normalized DSD function. Results are presented of an investigation into the invariance of the double-moment normalized DSD through horizontal and vertical displacement in space, using data from disdrometers, vertically pointing K-band Micro Rain Radars, and an X-band polarimetric weather radar. The invariance of the double-moment normalized DSD is tested over a vertical range of up to 1.8 km and a horizontal range of up to approximately 100 km. The results suggest that for practical use, with well-chosen input moments, the double-moment normalized DSD can be assumed invariant in space in stratiform rain. The choice of moments used to characterize the DSD affects the amount of DSD variability captured by the normalization. It is shown that in stratiform rain, it is possible to capture more than 85% of the variability in DSD moments zero to seven using the technique. Most DSD variability in stratiform rain can thus be explained through the variability of two of its statistical moments. The results suggest similar behavior exists in transition and convective rain, but the limited data samples available do not allow for robust conclusions for these rain types. The results have implications for practical uses of double-moment DSD normalization, including the study of DSD variability and microphysics, DSD-retrieval algorithms, and DSD models used in rainfall retrieval.

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Hoballah, M., M. B. Barbaro, R. Kunne, M. Lassaut, D. Marchand, G. Quéméner, E. Voutier, and J. van de Wiele. "Connecting spatial moments and momentum densities." Physics Letters B 808 (September 2020): 135669. http://dx.doi.org/10.1016/j.physletb.2020.135669.

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Lan, Kevin, and James W. Jorgenson. "Spatial and temporal progressions of spatial statistical moments in linear chromatography." Journal of Chromatography A 905, no. 1-2 (January 2001): 47–57. http://dx.doi.org/10.1016/s0021-9673(00)00988-2.

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Ossant, Frédéric, Frédéric Patat, Matthias Lebertre, Marie-Laure Teriierooiterai, and Léandre Pourcelot. "Effective Density Estimators Based on the K Distribution: Interest of Low and Fractional Order Moments." Ultrasonic Imaging 20, no. 4 (October 1998): 243–59. http://dx.doi.org/10.1177/016173469802000402.

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The K distribution is an efficient model to the nonRayleigh statistics of the envelope of backscattered signals in random media. This modeling leads to estimate a parameter of effective density by means of the calculation of statistical moments of the envelope signal. In this study, we propose a mathematical analysis of an effective density estimator previously used and based on superior order moments. In order to improve the effective density estimate, we propose several estimators based on low and fractional order moments. The performances of these estimators are evaluated both with simulated signals and in an experimental context with synthetic foams. Estimators based on low and fractional moments appear to be more robust than superior moment-based estimator and an improvement of the spatial resolution of the estimate can be obtained. Results also confirm the capability of the effective density parameter to characterize the spatial distribution of scattering structures.

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Medeiros, Walter E., and João B. C. Silva. "Simultaneous estimation of total magnetization direction and 3-D spatial orientation." GEOPHYSICS 60, no. 5 (September 1995): 1365–77. http://dx.doi.org/10.1190/1.1443872.

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Magnetic interpretations are usually carried out either by assuming induced magnetization and estimating the model geometry, or by presuming a known source spatial orientation to estimate the total magnetization. We present a 3-D magnetic interpretation method that estimates simultaneously the total magnetization direction and the spatial orientation of the source. It is based on the approximation of the anomaly by the series derived from expanding the magnetic potential into multipoles and retaining source moments up to second order. The moments and linear combinations of moments appearing in the series are then inverted from the magnetic anomaly. The total magnetization is assumed constant in direction but not in magnitude. It is also presumed implicitly that the anomalous distribution of magnetization intensity has nonzero values in a finite‐volume region, is far from the observation points, and presents three othogonal planes of symmetry intersecting at the center of the dipole moment. The method is essentially linear and requires no a priori explicit assumption of a fixed geometry for the sources. The method is particularly suited to interpret compact, isolated or disjoint, but spatially correlated sources. If the source satisfies all assumptions presumed by the method, it is possible to obtain accurate, stable estimates of the total dipole moment vector, the position of the center of dipole moment, and the directions of all three principal axes of symmetry. If the source is not far from the observation plane and/or if the total magnetization direction is not constant, it is still possible to obtain accurate and stable estimates of the direction of the mean total magnetization and the projection, on the observation plane, of the center of dipole moment. The method is applied to magnetic data from the Gulf of Guinea Seamount. The estimated magnetic palaeopole is at 50°48′S and 74°54′E which is in good agreement with estimates published by other authors.

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Baddeley, Adrian, and Gopal Nair. "Approximating the moments of a spatial point process." Stat 1, no. 1 (September 12, 2012): 18–30. http://dx.doi.org/10.1002/sta4.5.

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SHEN, JUN, WEI SHEN, and DANFEI SHEN. "ON GEOMETRIC AND ORTHOGONAL MOMENTS." International Journal of Pattern Recognition and Artificial Intelligence 14, no. 07 (November 2000): 875–94. http://dx.doi.org/10.1142/s0218001400000581.

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Moments are widely used in pattern recognition, image processing, computer vision and multiresolution analysis. To clarify and to guide the use of different types of moments, we present in this paper a study on the different moments and compare their behavior. After an introduction to geometric, Legendre, Hermite and Gaussian–Hermite moments and their calculation, we analyze at first their behavior in spatial domain. Our analysis shows orthogonal moment base functions of different orders having different number of zero-crossings and very different shapes, therefore they can better separate image features based on different modes, which is very interesting for pattern analysis and shape classification. Moreover, Gaussian–Hermite moment base functions are much more smoothed, they are thus less sensitive to noise and avoid the artifacts introduced by window function discontinuity. We then analyze the spectral behavior of moments in frequency domain. Theoretical and numerical analyses show that orthogonal Legendre and Gaussian–Hermite moments of different orders separate different frequency bands more effectively. It is also shown that Gaussian–Hermite moments present an approach to construct orthogonal features from the results of wavelet analysis. The orthogonality equivalence theorem is also presented. Our analysis is confirmed by numerical results, which are then reported.

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Wang, Xinran, Hailin Ren, Anil Kumar, and Pinhas Ben-Tzvi. "Design and Analysis of a Variable Inertia Spatial Robotic Tail for Dynamic Stabilization." Biomimetics 5, no. 4 (October 25, 2020): 55. http://dx.doi.org/10.3390/biomimetics5040055.

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This paper presents the design of a four degree-of-freedom (DoF) spatial tail and demonstrates the dynamic stabilization of a bipedal robotic platform through a hardware-in-loop simulation. The proposed tail design features three active revolute joints with an active prismatic joint, the latter of which provides a variable moment of inertia. Real-time experimental results validate the derived mathematical model when compared to simulated reactive moment results, both obtained while executing a pre-determined trajectory. A 4-DoF tail prototype was constructed and the tail dynamics, in terms of reactive force and moments, were validated using a 6-axis load cell. The paper also presents a case study where a zero moment point (ZMP) placement-based trajectory planner, along with a model-based controller, was developed in order for the tail to stabilize a simulated unstable biped robot. The case study also demonstrates the capability of the motion planner and controller in reducing the system’s kinetic energy during periods of instability by maintaining ZMP within the support polygon of the host biped robot. Both experimental and simulation results show an improvement in the tail-generated reactive moments for robot stabilization through the inclusion of prismatic motion while executing complex trajectories.

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Zoccatelli, D., M. Borga, A. Viglione, G. B. Chirico, and G. Blöschl. "Spatial moments of catchment rainfall: rainfall spatial organisation, basin morphology, and flood response." Hydrology and Earth System Sciences 15, no. 12 (December 20, 2011): 3767–83. http://dx.doi.org/10.5194/hess-15-3767-2011.

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Abstract. This paper describes a set of spatial rainfall statistics (termed "spatial moments of catchment rainfall") quantifying the dependence existing between spatial rainfall organisation, basin morphology and runoff response. These statistics describe the spatial rainfall organisation in terms of concentration and dispersion statistics as a function of the distance measured along the flow routing coordinate. The introduction of these statistics permits derivation of a simple relationship for the quantification of catchment-scale storm velocity. The concept of the catchment-scale storm velocity takes into account the role of relative catchment orientation and morphology with respect to storm motion and kinematics. The paper illustrates the derivation of the statistics from an analytical framework recently proposed in literature and explains the conceptual meaning of the statistics by applying them to five extreme flash floods occurred in various European regions in the period 2002–2007. High resolution radar rainfall fields and a distributed hydrologic model are employed to examine how effective are these statistics in describing the degree of spatial rainfall organisation which is important for runoff modelling. This is obtained by quantifying the effects of neglecting the spatial rainfall variability on flood modelling, with a focus on runoff timing. The size of the study catchments ranges between 36 to 982 km2. The analysis reported here shows that the spatial moments of catchment rainfall can be effectively employed to isolate and describe the features of rainfall spatial organization which have significant impact on runoff simulation. These statistics provide useful information on what space-time scales rainfall has to be monitored, given certain catchment and flood characteristics, and what are the effects of space-time aggregation on flood response modeling.

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Zoccatelli, D., M. Borga, A. Viglione, G. B. Chirico, and G. Blöschl. "Spatial moments of catchment rainfall: rainfall spatial organisation, basin morphology, and flood response." Hydrology and Earth System Sciences Discussions 8, no. 3 (June 21, 2011): 5811–47. http://dx.doi.org/10.5194/hessd-8-5811-2011.

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Abstract. This paper provides a general analytical framework for assessing the dependence existing between spatial rainfall organisation, basin morphology and runoff response. The analytical framework builds upon a set of spatial rainfall statistics (termed "spatial moments of catchment rainfall") which describe the spatial rainfall organisation in terms of concentration and dispersion statistics as a function of the distance measured along the flow routing coordinate. The introduction of these statistics permits derivation of a simple relationship for the quantification of storm velocity at the catchment scale. The paper illustrates the development of the analytical framework and explains the conceptual meaning of the statistics by means of application to five extreme flash floods occurred in various European regions in the period 2002–2007. High resolution radar rainfall fields and a distributed hydrologic model are employed to examine how effective are these statistics in describing the degree of spatial rainfall organisation which is important for runoff modelling. This is obtained by quantifying the effects of neglecting the spatial rainfall variability on flood modelling, with a focus on runoff timing. The size of the study catchments ranges between 36 to 982 km2. The analysis reported here shows that the spatial moments of catchment rainfall can be effectively employed to isolate and describe the features of rainfall spatial organization which have significant impact on runoff simulation. These statistics provide essential information on what space-time scales rainfall has to be monitored, given certain catchment and flood characteristics, and what are the effects of space-time aggregation on flood response modeling.

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Дисертації з теми "Spatial moments"

Emidio, Fernando. "Analysis of multidimensional radiating structures by the spatial Fourier transform and computational electromagnetics." Thesis, Saint-Etienne, 2013. http://www.theses.fr/2013STET4011.

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Ce manuscrit présente les travaux de recherche qui concernent l'analyse et la synthèse de structures rayonnantes multidimensionnelles en utilisant une approche qui combine méthode des moments et la transformée de Fourier spatiale. La distribution source (courant électrique) et le diagramme de rayonnement sont liées par la transformée de Fourier spatiale - la théorie de la Relation de Fourier (FR). La distribution des courants est déterminée en utilisant une méthode d'analyse en électromagnétisme (EM), à savoir la Méthode des Moments (MoM). Des travaux antérieurs utilisant la théorie FR ont été réalisés par d'autres auteurs sur des réseaux linéaires - uniformément espacés ou non uniformes. Les sources radiantes élémentaires des dipoles électriques filaires. Les travaux actuels se développent en utilisant la théorie FR à deux et trois dimensions sur des structures réelles. En utilisant la méthode MoM nous pouvons prendre en compte le rayon du fil, sur n'importe quel point d'excitation (générateur de tension ou onde incidente) et le couplage mutuel entre les éléments, créant ainsi un modèle électromagnétique réaliste pour la structure d'antenne
This manuscript presents the research work in the analysis and synthesis of multidimensional radiating structures using an approach that combines Method of Moments and Spatial Fourier Transform. The source distribution (electric current) and radiation pattern are related by the spatial Fourier Transform - Fourier Relation theory (FR). Current distribution is determined using Computational Electromagnetics (CEM), namely Method of Moments (MoM). Previous work using FR theory was done by other authors on linear arrays – uniformly or nonuniformly spaced elemental radiators laid on a straight line. Present work expands FR theory to two and three dimensions on real-world structures. By using MoM we can take into account wire radius, excitation on any point (voltage generator or incident wave) and mutual coupling between elements, thus creating a realistic electromagnetic model for the antenna structure

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Yeh, Tian-Chyi J., Ming Ye, and Raziuddin Khaleel. "Estimation of effective unsaturated hydraulic conductivity tensor using spatial moments of observed moisture plume." Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/615768.

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Knowledge of unsaturated zone hydraulic properties is critical for many environmental and engineering applications. Various stochastic methods have been developed during the past two decades to estimate the effective unsaturated hydraulic properties. Independent of these stochastic methods, we develop in this paper a practical approach to estimate the three-dimensional (3 -D) effective unsaturated hydraulic conductivity tensor using spatial moments of 3-D snapshots of a moisture plume under transient flow conditions. approach hydraulic hydraulic Application of the new to a field site in southeastern Washington State yields an effective unsaturated conductivity tensor that exhibits moisture- dependent anisotropy. The effective conductivities compare well with laboratory- measured unsaturated hydraulic conductivity data from small core samples; they also reproduce the general behavior of the observed moisture plume at the site. We also define a moisture diffusivity length concept which we use in conjunction with estimated correlation scales of the geological media at the field site to explain deviations between the observed and simulated plumes based on the derived effective hydraulic properties.

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Tao, Ji. "Spatial econometrics models, methods and applications /." Connect to this title online, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1118957992.

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Thesis (Ph. D.)--Ohio State University, 2005.
Title from first page of PDF file. Document formatted into pages; contains x, 140 p. Includes bibliographical references (p. 137-140). Available online via OhioLINK's ETD Center

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Wolff, Wagner. "Avaliação e nova proposta de regionalização hidrológica para o Estado de São Paulo." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-08042013-102503/.

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A regionalização hidrológica é uma técnica que permite transferir informação entre bacias hidrográficas semelhantes, a fim de calcular em sítios que não dispõem de dados, as variáveis hidrológicas de interesse; assim, a mesma caracteriza-se por ser uma ferramenta útil na obtenção de outorga de direitos de uso de recursos hídricos, instrumento previsto na Lei 9433/97. Devido à desatualização do modelo atual de regionalização hidrológica do Estado de São Paulo, proposto na década de 80, este estudo tem como objetivo geral avaliar se o mesmo está adequado ao uso, de acordo com a atualização de seu banco de dados, e propor um novo que supere as limitações do antigo. O estudo foi realizado no Estado de São Paulo, que tem área de aproximadamente 248197 km², localizado entre as longitudes -44° 9\', e -53º 5\', e entre as latitudes -22° 40\', e -22° 39\'. Utilizou-se, inicialmente, dados de 176 estações fluviométricas administradas pelo DAEE e pela ANA, disponíveis em http://www.sigrh.sp.gov.br. Determinou-se para as estações, a precipitação média anual da bacia hidrográfica (P), a vazão média plurianual (Q), a vazão mínima média de 7 dias seguidos com período de retorno de 10 anos (Q7,10) e as vazões com 90 e 95% de permanência no tempo (Q90 e Q95). Posteriormente, fez-se análise de consistência excluindo as estações inconsistentes do estudo; assim, restaram 172 para serem utilizadas na avaliação do modelo e formulação de um novo. A avaliação do modelo fez-se pelo índice de confiança (c), que é definido pelo produto entre o coeficiente de correlação (r) e o índice de concordância (d), utilizando como valor de estimativa as vazões geradas pelo modelo, e como valor padrão as calculadas por intermédio das estações fluviométricas. Todas as vazões avaliadas foram classificadas como ótimas, com índice de confiança (c) acima de 0,85; assim, o atual modelo rejeitou a hipótese de que a atualização de seu banco de dados pudesse inferir em sua capacidade preditiva; portanto, o mesmo pode ser usado na obtenção das vazões estudadas que são referência na emissão de outorga em diferentes Estados do Brasil. Entretanto, o modelo apresentou algumas limitações, como extrapolação para áreas de bacias de drenagem menores do que as utilizadas para formulá-lo, e problemas em seu aplicativo computacional: o mesmo informa a precipitação média anual na coordenada geográfica do local de captação da água, e não da bacia de drenagem a montante do referido local. Neste enfoque, foi formulado um novo modelo, que superou as limitações e proporcionou capacidade preditiva maior que a do antigo.
A hydrological regionalization is a technique that allows to transfer information between similar watersheds in order to calculate, in sites where there are no data on the hydrological variables of interest. This technique becomes a useful tool to ensure the rights of water resources use, instrument provided by Law 9433/97. Due to the outdated hydrological regionalization model of São Paulo State, proposed in the 1980\'s, this study aims to broadly assess whether the current model is appropriate to use, according to an analysis of its update database and to propose a new model to overcome the limitations of the current one. The study was conducted in State São Paulo with area of approximately 248197 km ², located between longitudes -44 ° 9 \', and -53 ° 5\', and between latitudes 40 ° -22\' and -22 ° 39\'. We used data from 176 initially gauged stations administered by ANA and DAEE available at http://www.sigrh.sp.gov.br, where it was determined to the stations, the average annual rainfall of the basin (P) multiannual average streamflow (Q), streamflow minimum average of 7 consecutive days with a return period of 10 years (Q7,10) and streamflows with 90 and 95% of permanence in time(Q90 e Q95). Afterwards, we analyzed the consistency excluding the inconsistent stations from the study, thus, remaining 172 to be used in the model evaluation and development of a new model. The model evaluation was made by the confidence index (c), which is the product between the correlation coefficient (r) and the agreement index (d), using as estimate value the streamflows generated by the model and as the standard value, the streamflows calculated through the gauged stations. All streamflows evaluated were classified as optimal, with confidence index (c) above 0.85, therefore, the current model rejected the hypothesis that upgrading the database could infer its predictive ability, so, it can be used to obtain the streamflows studied that refer to use grants in different States of Brazil. However, the model had some limitations, such as extrapolation to areas of smaller watersheds than those used to formulate it, and computer application problems, being that, it reports the average annual precipitation at the geographic coordinate at the local catchment water, not the watershed upstream of that location. A new model was formulated that surpasses the limitations and provides greater predictive ability than the current one.

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Badinger, Harald, and Peter Egger. "Fixed Effects and Random Effects Estimation of Higher-Order Spatial Autoregressive Models with Spatial Autoregressive and Heteroskedastic Disturbances." WU Vienna University of Economics and Business, 2014. http://epub.wu.ac.at/4126/1/wp173.pdf.

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This paper develops a unified framework for fixed and random effects estimation of higher-order spatial autoregressive panel data models with spatial autoregressive disturbances and heteroskedasticity of unknown form in the idiosyncratic error component. We derive the moment conditions and optimal weighting matrix without distributional assumptions for a generalized moments (GM) estimation procedure of the spatial autoregressive parameters of the disturbance process and define both a random effects and a fixed effects spatial generalized two-stage least squares estimator for the regression parameters of the model. We prove consistency of the proposed estimators and derive their joint asymptotic distribution, which is robust to heteroskedasticity of unknown form in the idiosyncratic error component. Finally, we derive a robust Hausman-test of the spatial random against the spatial fixed effects model. (authors' abstract)
Series: Department of Economics Working Paper Series

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Yanni, Mamdouh. "The influence of thresholding and spatial resolution variations on the performance of the complex moments descriptor feature extractor." Thesis, University of Kent, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.262371.

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Othmani, Wadie. "Pratiques et moments touristiques des Tunisiens et des Maghrébins dans la métropole de Tunis." Thesis, Angers, 2018. http://www.theses.fr/2018ANGE0032/document.

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Le tourisme contribue à hauteur de plus de 15 % dans le PIB national tunisien (WTTC, 2017 : p 1). Ce secteur, depuis sa création dans le milieu des années soixante-dix, a toujours été un des plus importants moteurs de l’économie du pays. Depuis le début des années deux mille, le modèle, basé sur la commercialisation des produits classiques [4 S : sea, sun, sand (plage), sand (désert)] à une clientèle majoritairement occidentale, a atteint la saturation. Au cours de cette période, la chute a commencé à se sentir jusqu’à atteindre une situation critique aggravée par les événements terroristes qu’a subi le pays en 2015. Pour faire face à cette situation, les acteurs du secteur sont allés épuiser dans leur réserve stratégique qui n’était rien d’autre que le touriste national et le touriste maghrébin, essentiellement les Algériens et les Libyens : voisins immédiats de la Tunisie. Actuellement, ces touristes représentent les nationalités les plus présentes en Tunisie post-révolution.Cette thèse de doctorat a examiné le sujet via le recours à des analyses des documents statistiques officiels, des entretiens auprès des différents acteurs qui agissent sur le secteur touristique tunisien, des observations ciblant plusieurs hauts lieux touristiques dans la métropole Tunis et une enquête statistique. La population touristique ciblée est riche et variée puisqu’elle concerne les tunisiens (touristes nationaux), les Algériens, les Libyens, les Marocains, les mauritaniens et la diaspora maghrébine qui émane essentiellement des pays en dehors du territoire du Grand Maghreb, majoritairement de l’Occident. De ce fait, nous avons commencé par réfuter la thèse adoptée par des chercheurs occidentaux prétendant que l’accès au tourisme pour les sociétés en voie de développement est un phénomène récent. Par la suite, nous avons présenté comment ces touristes maghrébins consomment l’espace du Grand Tunis et dans quels lieux ils se concentrent. La thèse a permis également de dresser des profils des touristes maghrébins. Ce profilage se base sur l’âge, le sexe, la catégorie socioprofessionnelle et sur le pays de provenance du touriste. Dans d’autres termes, cette analyse répond aux besoins d’une population touristique nationale et maghrébine actuelle, mais aussi elle se considère comme une étude stratégique pour la population touristique du futur : les jeunes qui seront adultes et les adultes qui seront plus âgés
Tourism contributes more than 15% of Tunisia's national GDP (WTTC, 2017: p 1). This sector, since its creation in the mid-seventies, has always been one of the most important engines of the country's economy. Since the beginning of the two thousand years, the model, based on the marketing of classic products [4 S: sea, sun, sand (beach), sand (desert)] to a predominantly Western clientele, has reached saturation. During this period, the fall began to feel until reaching a critical situation aggravated by the terrorist events that the country suffered in 2015. To cope with this situation, the actors of the sector went to exhaust in their strategic reserve that was nothing but the national tourist and the Maghreb tourist, mainly Algerians and Libyans: immediate neighbors of Tunisia. Currently, these tourists represent the nationalities most present in post-revolution Tunisia. This doctoral thesis examined the subject through the use of analyzes of official statistical documents, interviews with the various actors who act on the Tunisian tourism sector, observations targeting several major tourist sites in the Tunis metropolis and a statistical survey. The targeted tourist population is rich and varied since it concerns Tunisians (national tourists), Algerians, Libyans, Moroccans, Mauritanians and the Maghreb diaspora, which comes mainly from countries outside the territory of the Greater Maghreb, mainly 'West. As a result, we began by refuting the thesis adopted by Western researchers claiming that access to tourism for developing societies is a recent phenomenon. Subsequently, we presented how these Maghreb tourists consume the space of Greater Tunis and in what places they focus. The thesis also made it possible to draw profiles of Maghreb tourists. This profiling is based on the age, gender, socio-professional category and country of origin of the tourist. In other words, this analysis meets the needs of a current national and North African tourist population, but it also considers itself a strategic study for the tourist population of the future: young adults and adults who will be older

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Badinger, Harald, and Peter Egger. "Estimation and Testing of Higher-Order Spatial Autoregressive Panel Data Error Component Models." Springer, 2013. http://epub.wu.ac.at/5468/1/JoGS_2012.pdf.

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This paper develops an estimator for higher-order spatial autoregressive panel data error component models with spatial autoregressive disturbances, SARAR(R,S). We derive the moment conditions and optimal weighting matrix without distributional assumptions for a generalized moments (GM) estimation procedure of the spatial autoregressive parameters of the disturbance process and define a generalized two-stage least squares estimator for the regression parameters of the model. We prove consistency of the proposed estimators, derive their joint asymptotic distribution, and provide Monte Carlo evidence on their small sample performance.

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Xu, Xingbai Xu. "Asymptotic Analysis for Nonlinear Spatial and Network Econometric Models." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461249529.

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Andriamanampisoa, Lala Bakonirina. "Simulation de la diffraction par des réseaux lamellaires 1D par la méthode modale en différences finies et la méthode des moments en coordonnées paramétriques." Phd thesis, Université Blaise Pascal - Clermont-Ferrand II, 2010. http://tel.archives-ouvertes.fr/tel-00653380.

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Ce manuscrit est consacré à l'amélioration des deux méthodes numériques : MMDF et Méthode des Moments avec la technique de la RSA. Dans un premier temps, on présente les outils théoriques sur l'étude du problème de la diffraction par des réseaux lamellaires, éclairée sous incidence classique et les outils de simulation pour résoudre les équations de Maxwell. On choisit comme fonctions de base et de test, les fonctions triangles. On introduit par la suite, la technique de la RSA afin d'améliorer la vitesse de convergence de calcul. Les résultats obtenus sont comparés à ceux de la méthode MMFE et la méthode MMDF de "Lalanne et al". Une étude numérique de la stabilité et de la convergence de la méthode est effectuée. Enfin, on présente une extension de la Méthode des Moments basée sur l'hypothèse de Galerkin au cas de l'incidence conique. Le détail de la résolution des équations Maxwell est décrit. L'application numérique est traitée dans le cas du réseau diélectrique pour mettre au point les influences de l'état de la polarisation et les paramètres physiques.

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Книги з теми "Spatial moments"

Angular momentum: Understanding spatial aspects in chemistry and physics. New York: Wiley, 1988.

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Nikolaevskiĭ, V. N. Angular momentum in geophysical turbulence: Continuum spatial averaging method. Dordrecht: Kluwer Academic Publishers, 2003.

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Nikolaevskiy, Victor N. Angular Momentum in Geophysical Turbulence: Continuum Spatial Averaging Method. Dordrecht: Springer Netherlands, 2003.

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Forgetta, Emanuela. La città e la casa Spazi urbani e domestici in Maria Aurèlia Capmany, Natalia Ginzburg, Elsa Morante e Mercè Rodoreda. Venice: Fondazione Università Ca’ Foscari, 2022. http://dx.doi.org/10.30687/978-88-6969-586-5.

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This research work aims at the reconstruction of literary spaces created by four great female authors of the twentieth century. Analysed individually or from a comparative perspective, the texts solicit a reflection on the representation of space in literature produced by women. The focus of the investigation is the dynamic contrast that, at the moment of perception, is established between the ‘internal’, and therefore subjective, dimension and the ‘external’ dimension, regulated by the social context in which the subject moves. The work consists of three parts: the first part establishes the parameters within which the research is organised; the second part investigates the process of reappropriation of the city – a place of almost exclusive male prerogative – by the protagonists of the proposed novels and their “walking down the street” as a device of spatial organisation. In the third and last part, the female perception of the domestic space is analysed. A place of female confinement par excellence, it shows, even in literature, an ambivalent character, as an expression of abuse and affection at the same time. From the ‘spatial’ reinterpretation of the proposed works, therefore, both the intimate representation of space and the historical-social evaluation of the context in which the protagonists, and their own authors, move, emerge.

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Wikle, Christopher K. Spatial Statistics. Oxford University Press, 2018. http://dx.doi.org/10.1093/acrefore/9780190228620.013.710.

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The climate system consists of interactions between physical, biological, chemical, and human processes across a wide range of spatial and temporal scales. Characterizing the behavior of components of this system is crucial for scientists and decision makers. There is substantial uncertainty associated with observations of this system as well as our understanding of various system components and their interaction. Thus, inference and prediction in climate science should accommodate uncertainty in order to facilitate the decision-making process. Statistical science is designed to provide the tools to perform inference and prediction in the presence of uncertainty. In particular, the field of spatial statistics considers inference and prediction for uncertain processes that exhibit dependence in space and/or time. Traditionally, this is done descriptively through the characterization of the first two moments of the process, one expressing the mean structure and one accounting for dependence through covariability.Historically, there are three primary areas of methodological development in spatial statistics: geostatistics, which considers processes that vary continuously over space; areal or lattice processes, which considers processes that are defined on a countable discrete domain (e.g., political units); and, spatial point patterns (or point processes), which consider the locations of events in space to be a random process. All of these methods have been used in the climate sciences, but the most prominent has been the geostatistical methodology. This methodology was simultaneously discovered in geology and in meteorology and provides a way to do optimal prediction (interpolation) in space and can facilitate parameter inference for spatial data. These methods rely strongly on Gaussian process theory, which is increasingly of interest in machine learning. These methods are common in the spatial statistics literature, but much development is still being done in the area to accommodate more complex processes and “big data” applications. Newer approaches are based on restricting models to neighbor-based representations or reformulating the random spatial process in terms of a basis expansion. There are many computational and flexibility advantages to these approaches, depending on the specific implementation. Complexity is also increasingly being accommodated through the use of the hierarchical modeling paradigm, which provides a probabilistically consistent way to decompose the data, process, and parameters corresponding to the spatial or spatio-temporal process.Perhaps the biggest challenge in modern applications of spatial and spatio-temporal statistics is to develop methods that are flexible yet can account for the complex dependencies between and across processes, account for uncertainty in all aspects of the problem, and still be computationally tractable. These are daunting challenges, yet it is a very active area of research, and new solutions are constantly being developed. New methods are also being rapidly developed in the machine learning community, and these methods are increasingly more applicable to dependent processes. The interaction and cross-fertilization between the machine learning and spatial statistics community is growing, which will likely lead to a new generation of spatial statistical methods that are applicable to climate science.

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Spentzou, Efrossini. Propertius’ Aberrant Itineraries. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198768098.003.0002.

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Can we find the flâneur in ancient Rome? This is not a narrow question of whether this modern French literary figure has a Classical prehistory, but whether there is a parallel relationship at Rome between large urban centres, literary production, and individualism. This chapter suggests there are instances in Latin love elegy that offer a layered response to spatial forms. Observing the rhythms of the everyday in Rome, we discover shared spaces of erotic and imperial power. Propertius and Ovid are as much constructors of the eternal city as its monumental imperial builders. It is in fleeting and intense moments of escape that we become aware of the inflexibility of everyday life in Rome. In the moments when the citizen may (or may not) give way to the lover, the limitations of set scripts are revealed, and the implacable logic of imperial space softens in the undecidability of the moment.

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Zare, Richard N. Angular Momentum: Understanding Spatial Aspects in Chemistry and Physics. Dover Publications, 2007.

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Mattens, Filip. From the Origin of Spatiality to a Variety of Spaces. Edited by Dan Zahavi. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198755340.013.38.

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How can a spatial world appear to a non-extended mind? This chapter focuses on two moments in which this question steered the development of phenomenology. The first part explains how Husserl’s understanding of perception took shape against the background of nineteenth-century debates on the psychological origin of spatial presentations. It is in his phenomenological reconsideration of this matter that the subject comes to be understood as a subject of bodily capacities, engaged in a primal form of praxis. The second part focuses on Straus’s crusade against the dominant, praxis-based understanding of spatiality. Radically rejecting the question itself as originating in a Cartesian misconception of sense-perception, Straus introduced a plurality of spaces by revealing different “forms of spatiality” flowing from the affective dimension underlying all perception.

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Manchon, A., and S. Zhang. Theory of Rashba Torques. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198787075.003.0024.

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This chapter focuses on the theory of current-driven Rashba torque, a special type of spin–orbit mediated spin torque that requires broken spatial-inversion symmetry. This specific form of spin-orbit interaction enables the electrical generation of a non-equilibrium spin density that yields both damping-like and field-like torques on the local magnetic moments. We review the recent results obtained in (ferromagnetic and antiferromagnetic) two-dimensional electron gases, bulk magnetic semiconductors, and at the surface of topological insulators. We conclude by summarizing recent experimental results that support the emergence of Rashba torques in magnets lacking inversion symmetry.

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Angular Momentum in Geophysical Turbulence: Continuum Spatial Averaging Method. Springer, 2003.

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Частини книг з теми "Spatial moments"

Walther, Bo Kampmann. "Cathartic moments or spatial liberty." In Comparative History of Literatures in European Languages, 395–407. Amsterdam: John Benjamins Publishing Company, 2017. http://dx.doi.org/10.1075/chlel.xxxi.31wal.

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D’Alessandro, Cristina, and Frannie Léautier. "Spatial and Temporal Issues and the Role of Moments." In Cities and Spaces of Leadership, 160–77. London: Palgrave Macmillan UK, 2016. http://dx.doi.org/10.1007/978-1-137-56191-6_9.

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Berglund, Sten, and George Demmy. "Effect of injection mode on the spatial moments of a non-reactive solute plume." In Groundwater Updates, 443–44. Tokyo: Springer Japan, 2000. http://dx.doi.org/10.1007/978-4-431-68442-8_76.

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Marti, Irene. "During Leisure Time." In Doing Indefinite Time, 235–328. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-12590-4_6.

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AbstractThis chapter focuses on the prisoners’ spatial, temporal and embodied experience of and during the particular part of the day that is labelled and organized by the prison as ‘leisure time’, taking place in a wide range of contexts. After a brief description of the legal and institutional norms and rules regarding leisure time in Swiss prisons, it presents the prisoners’ multiple approaches to doing leisure time, during which they have various opportunities to encounter the outside world. It is argued that these moments generally intensify their lives and allow them to feel free, or less imprisoned, but at the same time cause them to become intensely aware of their imprisonment, of what they have lost, miss and will probably never experience again.

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Nikolaevskiy, Victor N. "Spatial Averaging and Macroequations." In Angular Momentum in Geophysical Turbulence, 31–56. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-017-0199-0_3.

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Ohori, Michihiro. "Estimation of Empirical Green’s Tensor Spatial Derivative Elements: A Preliminary Study Using Strong Motion Records in Southern Fukui Prefecture, Japan." In Moment Tensor Solutions, 253–62. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-77359-9_11.

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Gomaa, Dalia M. A. "Moments of (Un)belonging: The Spatial Configuration of Home(land) in The Time between Places: Stories that Weave in and out of Egypt and Arnerica and The Namesake." In The Non-National in Contemporary American Literature, 93–128. New York: Palgrave Macmillan US, 2016. http://dx.doi.org/10.1057/9781137496263_4.

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Guenther, Marcel C., and Jeremy T. Bradley. "Higher Moment Analysis of a Spatial Stochastic Process Algebra." In Computer Performance Engineering, 87–101. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24749-1_8.

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Erberik, M. Altug, and Mahyar Azizi. "Spatial Distribution of Hysteretic Energy in Reinforced Concrete Moment Resisting Frames." In Lecture Notes in Civil Engineering, 47–62. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-73932-4_4.

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Wikman, Pär, and Marcus Mohall. "Translating Space: The Rise and Fall of Central Place Theory and Planning-Geography in Sweden." In Socio-Spatial Theory in Nordic Geography, 31–49. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04234-8_3.

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AbstractThis chapter explores the emergence and eventual decline of a distinctive kind of planning-oriented human geography in post-war Sweden and the closely related adaptation of Walter Christaller’s central place theory by geographers such as Torsten Hägerstrand and Sven Godlund. The rapidly expanding Swedish welfare state gave rise to a demand for skills and expertise of a kind many geographers were eager to provide, and Christaller’s abstract framework allowed them to position themselves as producers of socially useful knowledge. Eventually, however, several voices raised concerns about how the focus on planning and the dominance of reductive theories such as central place theory constrained the academic development of the discipline. The end of the expansive phase of the welfare state also decreased the demand for the expertise geographers had provided. In essence, the popularity of central place theory was tethered to a particular historical moment, and it only allowed for rather narrow analyses of socio-spatial relations. Nonetheless, the theory played a key role in the transformation of Swedish human geography into a modern social science, insofar as the comparatively novel understanding of space it provided contributed to the development of more complex and philosophical theories and approaches to geography.

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Тези доповідей конференцій з теми "Spatial moments"

He, Wenda, Erika R. E. Denton, and Reyer Zwiggelaar. "Mammographic segmentation based on mammographic parenchymal patterns and spatial moments." In 2009 9th International Conference on Information Technology and Applications in Biomedicine (ITAB 2009). IEEE, 2009. http://dx.doi.org/10.1109/itab.2009.5394451.

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Ayala, G. "Texture classification based on moments of the spatial size distribution." In International Conference on Visual Information Engineering (VIE 2003). Ideas, Applications, Experience. IEE, 2003. http://dx.doi.org/10.1049/cp:20030543.

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Fan, XinFeng, and HongQun Wang. "A runway tracking model using Zernike moments and particle filters for a landing unmanned aerial vehicle based on vision." In Second International Conference on Spatial Information Technology, edited by Cheng Wang, Shan Zhong, and Jiaolong Wei. SPIE, 2007. http://dx.doi.org/10.1117/12.775199.

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Boutaleb, Manel, Imen Lassoued, and Ezzeddine Zagrouba. "A Comparative Study between Spatial-Temporal Orthogonal Moments for Volumes Description." In 2012 4th International Conference on Intelligent Networking and Collaborative Systems (INCoS). IEEE, 2012. http://dx.doi.org/10.1109/incos.2012.40.

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Loughlin, Patrick J. "Local spectral and spatial frequency moments of shallow-water sound propagation." In International Symposium on Optical Science and Technology, edited by Franklin T. Luk. SPIE, 2002. http://dx.doi.org/10.1117/12.455784.

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Castaneda, Roman. "Imaging quality analysis in spatial frequency domain by using PSF moments." In Second Iberoamerican Meeting on Optics, edited by Daniel Malacara-Hernandez, Sofia E. Acosta-Ortiz, Ramon Rodriguez-Vera, Zacarias Malacara, and Arquimedes A. Morales. SPIE, 1996. http://dx.doi.org/10.1117/12.231053.

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Cohn, Robert W., and R. J. Nonnenkamp. "Statistical moments of the transmittance of phase-only spatial light modulators." In San Diego '92, edited by Chandrasekhar Roychoudhuri and Wilfrid B. Veldkamp. SPIE, 1993. http://dx.doi.org/10.1117/12.138892.

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BOTERO, BLANCA A., and JUAN JOSÉ OCAMPO. "CHARACTERIZATION OF SPATIAL VARIABILITY OF PRECIPITATION BY SPATIAL MOMENTS OF CATCHMENT RAINFALL IN A TROPICAL ENVIRONMENT." In 38th IAHR World Congress. The International Association for Hydro-Environment Engineering and Research (IAHR), 2019. http://dx.doi.org/10.3850/38wc092019-0629.

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Wang, Kairong, Bingjia Xiao, Jinyao Xia, and Dan Li. "A Dynamic Hand Gesture Recognition Algorithm Using Codebook Model and Spatial Moments." In 2015 7th International Conference on Intelligent Human-Machine Systems and Cybernetics (IHMSC). IEEE, 2015. http://dx.doi.org/10.1109/ihmsc.2015.202.

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Welch, Edward B., Phillip J. Rossman, Joel P. Felmlee, and Armando Manduca. "Self-navigated motion correction using moments of spatial projections in radial MRI." In Medical Imaging 2004, edited by J. Michael Fitzpatrick and Milan Sonka. SPIE, 2004. http://dx.doi.org/10.1117/12.536913.

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Звіти організацій з теми "Spatial moments"

Andricevic, R. Transport of sorbing solutes in randomly heterogeneous formations: Spatial moments, macrodispersion, and parameter uncertainty. Office of Scientific and Technical Information (OSTI), June 1993. http://dx.doi.org/10.2172/10105844.

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Robert Pincus. Accounting for Unresolved Spatial Variability in Large Scale Models: Development and Evaluation of a Statistical Cloud Parameterization with Prognostic Higher Order Moments. Office of Scientific and Technical Information (OSTI), May 2011. http://dx.doi.org/10.2172/1013591.

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Gutiérrez Rodríguez, Encarnación. Entangled Migrations The Coloniality of Migration and Creolizing Conviviality. Maria Sibylla Merian International Centre for Advanced Studies in the Humanities and Social Sciences Conviviality-Inequality in Latin America, 2021. http://dx.doi.org/10.46877/rodriguez.2021.35.

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This Working Paper discusses entangled migrations as territorially and temporally entangled onto-epistemological phenomena. As a theoretical-analytical framework, it addresses the material, epistemological and ethical premises of spatial-temporal entanglements and relationality in the understanding of migration as a modern colonial phenomenon. Entangled migrations acknowledges that local migratory movements mirror global migrations in complex ways, engaging with the analysis of historical connections, territorial entrenchments, cultural confluences, and overlapping antagonistic relations across nations and continents. Drawing on European immigration to the American continent and specifically to Brazil in the 19th century, this argument is tentatively developed by discussing two opposite moments of entangled migrations, the coloniality of migration and creolizing conviviality. To do this, the paper engages first with the theoretical framework of spatial-temporal entanglements. Second, it approaches the coloniality of migration. Finally, it briefly discusses creolizing conviviality.

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Over, Thomas, Riki Saito, Andrea Veilleux, Padraic O’Shea, Jennifer Sharpe, David Soong, and Audrey Ishii. Estimation of Peak Discharge Quantiles for Selected Annual Exceedance Probabilities in Northeastern Illinois. Illinois Center for Transportation, June 2016. http://dx.doi.org/10.36501/0197-9191/16-014.

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This report provides two sets of equations for estimating peak discharge quantiles at annual exceedance probabilities (AEPs) of 0.50, 0.20, 0.10, 0.04, 0.02, 0.01, 0.005, and 0.002 (recurrence intervals of 2, 5, 10, 25, 50, 100, 200, and 500 years, respectively) for watersheds in Illinois based on annual maximum peak discharge data from 117 watersheds in and near northeastern Illinois. One set of equations was developed through a temporal analysis with a two-step least squares-quantile regression technique that measures the average effect of changes in the urbanization of the watersheds used in the study. The resulting equations can be used to adjust rural peak discharge quantiles for the effect of urbanization, and in this study the equations also were used to adjust the annual maximum peak discharges from the study watersheds to 2010 urbanization conditions. The other set of equations was developed by a spatial analysis. This analysis used generalized least-squares regression to fit the peak discharge quantiles computed from the urbanization-adjusted annual maximum peak discharges from the study watersheds to drainage-basin characteristics. The peak discharge quantiles were computed by using the Expected Moments Algorithm following the removal of potentially influential low floods defined by a multiple Grubbs-Beck test. To improve the quantile estimates, regional skew coefficients were obtained from a newly developed regional skew model in which the skew increases with the urbanized land use fraction. The skew coefficient values for each streamgage were then computed as the variance-weighted average of at-site and regional skew coefficients. The drainage-basin characteristics used as explanatory variables in the spatial analysis include drainage area, the fraction of developed land, the fraction of land with poorly drained soils or likely water, and the basin slope estimated as the ratio of the basin relief to basin perimeter. This report also provides: (1) examples to illustrate the use of the spatial and urbanization-adjustment equations for estimating peak discharge quantiles at ungaged sites and to improve flood-quantile estimates at and near a gaged site; (2) the urbanization-adjusted annual maximum peak discharges and peak discharge quantile estimates at streamgages from 181 watersheds including the 117 study watersheds and 64 additional watersheds in the study region that were originally considered for use in the study but later deemed to be redundant. The urbanization-adjustment equations, spatial regression equations, and peak discharge quantile estimates developed in this study will be made available in the web-based application StreamStats, which provides automated regression-equation solutions for user-selected stream locations. Figures and tables comparing the observed and urbanization-adjusted peak discharge records by streamgage are provided at http://dx.doi.org/10.3133/sir20165050 for download.

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Midak, Liliia Ya, Ivan V. Kravets, Olga V. Kuzyshyn, Tetiana V. Kostiuk, Khrystyna V. Buzhdyhan, Victor M. Lutsyshyn, Ivanna O. Hladkoskok, Arnold E. Kiv, and Mariya P. Shyshkina. Augmented reality while studying radiochemistry for the upcoming chemistry teachers. [б. в.], July 2021. http://dx.doi.org/10.31812/123456789/4627.

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The objective of the research is developing a mobile application (on Android) designed to visualize the basic definitions of the discipline “Radiochemistry and radioecology” in 3D. Studying the education material of this discipline (phenomena of radionuclide, radioisotope, the nucleus, the fundamental particle etc and their specifics) requires a more sophisticated explanation from the teacher and dynamic dimensional image from the student. Decent detailed visualization of the study material makes this process easier. So applying the augmented reality is rational for the purpose of visualizing the study material, applying it allows demonstrate 3D-models of the nucleus, the fundamental particles, the nature of radioactive decay, nuclear fission, the specifics of managing the nuclear weapon and the NPS. Involving this instrument of the up-to-date information and communication technologies while studying the new material gives the opportunity to develop and boost the spatial imagination of the students, “to see” the invisible and to understand the received material in a better way, which improves its better memorizing. As far as the augmented reality is one of the most recent new-age education trends, all the teachers are required to have the ability to use it. In this reason the upcoming teachers, the students of the “General Education (Chemistry)” specialty, must be trained with this technology. Within the study process the students have the opportunity to review the positive moments of applying AR from a student’s stand of point and to understand, how to apply similar education tools in the future pedagogic work.

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Lamontagne, M. Macroseismic information for the 1935 moment magnitude 6.1 earthquake, near Témiscamingue, Quebec. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/329136.

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The November 1st, 1935, Témiscaming earthquake occurred within 20 km of the town of Témiscaming, Quebec. This earthquake was felt west to Fort William (now part of Thunder Bay), Ontario, east to Saint John, New Brunswick, and south to Kentucky and Virginia. Damaged chimneys were reported in Témiscaming, Quebec, and North Bay and Mattawa, Ontario. In the epicentral region, rockfalls were observed as well as cracks in gravel and sand along the shores of islands and lakes. Some 350 km away from the epicentre, near Parent, Quebec, earthquake vibrations triggered a 30 metre slide of railroad embankment. Numerous aftershocks were felt in Témiscaming and Kipawa during the following months, the largest rated as magnitude ML 5.4 (or mN 4.9). For the main shock and its largest aftershock, this Open File Report provides the available macroseismic information interpreted on the Modified Mercalli Intensity Scale using newspaper accounts as the main source of information for Canada. Macroseismic information from total of 126 localities in Canada and nearly 900 communities in the US (from the NOAA database of intensities) are tabulated in a Microsoft Excel spreadsheet. When available, newspaper clippings are included, together with some original damage accounts, photographs and scientific reports. The Open File also includes a Google Earth kmz file that allows the felt information reports to be viewed in a spatial tool.

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Lamontagne, M., P. Archambault, and S. Halchuk. Macroseismic information for the seven largest moderate earthquakes of the Charlevoix seismic zone, Quebec, between 1870 and 2021: February 3, 1902, M 4.5; September 30, 1924, M 5.2; January 08, 1931, M 4.9; October 19, 1939, M 5.3; October 14, 1952, M 4.5; August 19, 1979, M 4.8; March 6, 2005, M 4.7. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/329135.

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This Open File Report provides the available macroseismic information for the seven largest moderate earthquakes that occurred in the Charlevoix Seismic Zone between 1870 and 2021. These earthquakes and their moment magnitude (M) are: 1) February 3, 1902, M 4.5; 2) September 30, 1924, M 5.2; 3) January 08, 1931, M 4.9; 4) October 19, 1939, M 5.3; 5) October 14, 1952, M 4.5; 6) August 19, 1979, M 4.8; 7) March 6, 2005, M 4.7. Five, possibly six, of these seven earthquakes occurred in the northeast portion of the CSZ, where the largest event of the period, the 1925 M 6.2 earthquake, also occurred. For each locality where the earthquakes were felt, macroseismic information is given and interpreted on the Modified Mercalli Intensity Scale. The original mail questionnaires filled by postmasters for earthquakes no. 3, 4, 5 and 6 are lost. Consequently, the main sources of information are the newspaper accounts except for no. 7 for which web-based questionnaires are available. The macroseismic information from localities in Canada and in the US (from NOAA) are tabulated in Microsoft Excel spreadsheets. Most newspaper clippings that have macroseismic information are included. The Open File also provides Google Earth kmz files that allow the felt information reports to be viewed in a spatial tool.

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Lamontagne, M., K. B. S. Burke, and L. Olson. Felt reports and impact of the November 25, 1988, magnitude 5.9 Saguenay, Quebec, earthquake sequence. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328194.

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The November 25, 1988, moment magnitude 5.9 (Mw) Saguenay earthquake is one of the largest eastern Canadian earthquakes of the 20th century. It was preceded by a magnitude (MN) 4.7 foreshock and followed by very few aftershocks considering the magnitude of the main shock. The largest aftershock was a magnitude (MN) 4.3 event. This Open File (OF) Report presents a variety of documents (including original and interpreted felt information, images, newspaper clippings, various engineering reports on the damage, mass movements). This OF updates the report of Cajka and Drysdale (1994) with additional material, including descriptions of the foreshock and largest aftershock. Most of the felt report information come from replies of a questionnaire sent to postmasters in more than 2000 localities in Canada and in the United States. Images of the original felt reports from Canada are included. The OF also includes information gathered in damage assessments and newspaper accounts. For each locality, the interpreted information is presented in a digital table. The fields include the name, latitude and longitude of the municipality and the interpreted intensity on the Modified Mercalli Intensity (MMI) scale (most of which are the interpretations of Cajka and Drysdale, 1996). When available or significant, excerpts of the felt reports are added. This OF Report also includes images from contemporary newspapers that describe the impact. In addition, information contained in post-earthquake reports are discussed together with pictures of damage and mass movements. Finally, a GoogleEarth kmz file is added for viewing the felt information reports within a spatial tool.

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