Bibliografie tematiche / G-Computation

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Letteratura scientifica selezionata sul tema "G-Computation"

Autore: Grafiati
Pubblicato: 25 gennaio 2025

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Articoli di riviste sul tema "G-Computation"

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Breger, Tiffany L., Jessie K. Edwards, Stephen R. Cole, Daniel Westreich, Brian W. Pence e Adaora A. Adimora. "Two-stage g-computation". Epidemiology 31, n. 5 (settembre 2020): 695–703. http://dx.doi.org/10.1097/ede.0000000000001233.

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Wang, Changping, Chaokun Wang, Gaoyang Guo, Xiaojun Ye e Philip S. Yu. "Efficient Computation of G-Skyline Groups". IEEE Transactions on Knowledge and Data Engineering 30, n. 4 (1 aprile 2018): 674–88. http://dx.doi.org/10.1109/tkde.2017.2777994.

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Losev, Ivan V. "Computation of Weyl groups of $G$-varieties". Representation Theory of the American Mathematical Society 14, n. 02 (5 gennaio 2010): 9–69. http://dx.doi.org/10.1090/s1088-4165-10-00365-1.

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Herman, Allen. "Using G-algebras for Schur index computation". Journal of Algebra 260, n. 2 (febbraio 2003): 463–75. http://dx.doi.org/10.1016/s0021-8693(02)00577-x.

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Losev, I. V. "Computation of weight lattices of G-varieties". Journal of Mathematical Sciences 161, n. 1 (28 luglio 2009): 70–96. http://dx.doi.org/10.1007/s10958-009-9537-5.

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Vansteelandt, S., e N. Keiding. "Invited Commentary: G-Computation-Lost in Translation?" American Journal of Epidemiology 173, n. 7 (16 marzo 2011): 739–42. http://dx.doi.org/10.1093/aje/kwq474.

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Wang, Aolin, e Onyebuchi A. Arah. "G-computation demonstration in causal mediation analysis". European Journal of Epidemiology 30, n. 10 (ottobre 2015): 1119–27. http://dx.doi.org/10.1007/s10654-015-0100-z.

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Hall, Michael J., Neil E. Olson e Roger D. Chamberlain. "Utilizing Virtualized Hardware Logic Computations to Benefit Multi-User Performance". Electronics 10, n. 6 (12 marzo 2021): 665. http://dx.doi.org/10.3390/electronics10060665.

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Recent trends in computer architecture have increased the role of dedicated hardware logic as an effective approach to computation. Virtualization of logic computations (i.e., by sharing a fixed function) provides a means to effectively utilize hardware resources by context switching the logic to support multiple data streams of computation. Multiple applications or users can take advantage of this by using the virtualized computation in an accelerator as a computational service, such as in a software as a service (SaaS) model over a network. In this paper, we analyze the performance of virtualized hardware logic and develop M/G/1 queueing model equations and simulation models to predict system performance. We predict system performance using the queueing model and tune a schedule for optimal performance. We observe that high variance and high load give high mean latency. The simulation models validate the queueing model, predict queue occupancy, show that a Poisson input process distribution (assumed in the queueing model) is reasonable for low load, and expand the set of scheduling algorithms considered.
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Chu, Yunn-Kuang, e Jau-Chuan Ke. "Mean response time for a G/G/1 queueing system: Simulated computation". Applied Mathematics and Computation 186, n. 1 (marzo 2007): 772–79. http://dx.doi.org/10.1016/j.amc.2006.08.048.

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Chatton, A., F. Le Borgne, M. Léger, R. Lenain e Y. Foucher. "G-computation et intelligence artificielle en inférence causale". Revue d'Épidémiologie et de Santé Publique 69 (giugno 2021): S10—S11. http://dx.doi.org/10.1016/j.respe.2021.04.013.

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Tesi sul tema "G-Computation"

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Sirota, Leite Fernanda. "Role of the amino acid sequences in domain swapping of the B1 domain of protein G by computation analysis". Doctoral thesis, Universite Libre de Bruxelles, 2007. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210657.

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Domain swapping is a wide spread phenomenon which involves the association between two or more protein subunits such that intra-molecular interactions between domains in each subunit are replaced by equivalent inter-molecular interactions between the same domains in different subunits. This thesis is devoted to the analysis of the factors that drive proteins to undergo such association modes. The specific system analyzed is the monomer to swapped dimer formation of the B1 domain of the immunoglobulin G binding protein (GB1). The formation of this dimer was shown to be fostered by 4 amino acid substitutions (L5V, F30V, Y33F, A34F) (Byeon et al. 2003). In this work, computational protein design and molecular dynamics simulations, both with detailed atomic models, were used to gain insight into how these 4 mutations may promote the domain swapping reaction.

The stability of the wt and quadruple mutant GB1 monomers was assessed using the software DESIGNER, a fully automatic procedure that selects amino acid sequences likely to stabilize a given backbone structure (Wernisch et al. 2000). Results suggest that 3 of the mutations (L5V, F30V, A34F) have a destabilizing effect. The first mutation (L5V) forms destabilizing interactions with surrounding residues, while the second (F30V) is engaged in unfavorable interactions with the protein backbone, consequently causing local strain. Although the A34F substitution itself is found to contribute favorably to the stability of the monomer, this is achieved only at the expense of forcing the wild type W43 into a highly strained conformation concomitant with the formation of unfavorable interactions with both W43 and V54.

Finally, we also provide evidence that A34F mutation stabilizes the swapped dimer structure. Although we were unable to perform detailed protein design calculations on the dimer, due to the lower accuracy of the model, inspection of its 3D structure reveals that the 34F side chains pack against one another in the core of the swapped structure, thereby forming extensive non-native interactions that have no counterparts in the individual monomers. Their replacement by the much smaller Ala residue is suggested to be significantly destabilizing by creating a large internal cavity, a phenomenon, well known to be destabilizing in other proteins. Our analysis hence proposes that the A34F mutation plays a dual role, that of destabilizing the GB1 monomer structure while stabilizing the swapped dimer conformation.

In addition to the above study, molecular dynamics simulations of the wild type and modeled quadruple mutant GB1 structures were carried out at room and elevated temperatures (450 K) in order to sample the conformational landscape of the protein near its native monomeric state, and to characterize the deformations that occur during early unfolding. This part of the study was aimed at investigating the influence of the amino acid sequence on the conformational properties of the GB1 monomer and the possible link between these properties and the swapping process. Analysis of the room temperature simulations indicates that the mutant GB1 monomer fluctuates more than its wild type counter part. In addition, we find that the C-terminal beta-hairpin is pushed away from the remainder of the structure, in agreement with the fact that this hairpin is the structural element that is exchanged upon domain swapping. The simulations at 450 K reveal that the mutant protein unfolds more readily than the wt, in agreement with its decreased stability. Also, among the regions that unfold early is the alpha-helix C-terminus, where 2 out of the 4 mutations reside. NMR experiments by our collaborators have shown this region to display increased flexibility in the monomeric state of the quadruple mutant.

Our atomic scale investigation has thus provided insights into how sequence modifications can foster domain swapping of GB1. Our findings indicate that the role of the amino acid substitutions is to decrease the stability of individual monomers while at the same time increase the stability of the swapped dimer, through the formation of non-native interactions. Both roles cooperate to foster swapping.
Doctorat en sciences, Spécialisation biologie moléculaire
info:eu-repo/semantics/nonPublished

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Breuer, Thomas [Verfasser], Regina [Akademischer Betreuer] Dittmann e Tobias G. [Akademischer Betreuer] Noll. "Development of ReRAM-based devices for logic- and computation-in-memory applications / Thomas Breuer ; Regina Dittmann, Tobias G. Noll". Aachen : Universitätsbibliothek der RWTH Aachen, 2017. http://d-nb.info/1162499680/34.

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Higgs, C. "A computational study of the G-protein-G-protein coupled receptor interaction". Thesis, University of Essex, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324216.

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Taddese, Bruck. "Computational modelling of G protein-coupled receptors". Thesis, University of Essex, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.589439.

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G protein-coupled receptors (GPCRs) comprise the most "drugable" family of transmembrane proteins, GPCRs share a common structural template and a general mechanism of signal transduction, but vary greatly in sequence conservation, ligand recognition and function. The current set of class A GPCR crystal structures have facilitated the modelling of class A GPCRs. However, other classes of GPCRs have not been so easy to study. The main focus presented in this thesis is the utilisation of class A GPCR structural information to model medically important GPCRs other than class A GPCRs via molecular modelling. The lack of sequence conservation hampers modelling non-class A GPCRs using class A GPCR crystal structures. A plant GPCR, namely GCR1, has sequence homology to more than one GPCR family (class A, Band E GPCRs) and has been used to align the transmembrane region of class A and B GPCRs. Consequently, we have presented a computational protocol for the identification of putative plant GPCRs that may similarly be used to address the difficult issue of alignment between GPCR families but in this respect only GCR1 was found to be useful. GCR1 is still an orphan GPCR with no known cognate ligand. We first assessed whether GCR 1 was a valid GPCR via homology modelling and molecular dynamics. We found that GCR1 has more similarities to class A and class S GPCRs than was previously acknowledged and further support evidence that GCR1 is a GPCR. Consequently, using the class A - GCR1 - class B alignment, we have produced active and inactive homology models of the CGRP receptor, a prototypical class B GPCR. In conjunction with mutation data, these models were used to identify a number of distinct class B motifs and their class A equivalents for the first time. Finally, molecular dynamic simulations were used to further confirm the role of the class B motifs.
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Henne, Randal Marlow. "Computational studies of G-protein coupled receptors /". Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/8048.

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Duong, Chi-Hong. "Approches statistiques en pharmacoépidémiologie pour la prise en compte des facteurs de confusion indirectement mesurés dans les bases de données médico-administratives : Application aux médicaments pris au cours de la grossesse". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASR028.

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Les bases de données médico-administratives sont de plus en plus utilisées en pharmacoépidémiologie. Néanmoins, l'existence de facteurs de confusion (FDC) non mesurés et non pris en compte peut biaiser les analyses. Dans ce travail, nous explorons l'intérêt d'exploiter la richesse des données avec la sélection à large échelle d'un grand nombre de covariables mesurées corrélées avec d'éventuels facteurs manquants pour les ajuster indirectement. Ce concept est à la base du score de propension en grande dimension (hdPS), et nous appliquons la même démarche à la G-computation (GC) et l'estimation Ciblée par Maximum de Vraisemblance (TMLE). Bien que ces méthodes aient été évaluées dans certaines études de simulation, leurs performances sur de grandes bases de données réelles restent peu étudiées. Cette thèse vise à évaluer leurs contributions à l'atténuation de l'effet de FDC directement ou indirectement mesurés dans le système national des données de santé (SNDS) pour des études de pharmacoépidémiologie chez la femme enceinte. Dans le chapitre 2, nous avons utilisé un ensemble de médicaments de référence en lien avec la prématurité pour comparer les performances des trois méthodes. Toutes ont diminué le biais de confusion, la GC donnant les meilleures performances. Dans le chapitre 3, nous avons réalisé une analyse par hdPS dans un contexte de modélisation plus complexe pour étudier le lien controversé entre les anti-inflammatoires non stéroïdiens (AINS) et la fausse couche spontanée (FCS). Nous avons implémenté un modèle de Cox avec variable dépendant du temps et l'approche “lag-time” visant à corriger d'autres biais (biais de temps immortel et biais protopathique). Nous avons comparé des analyses basées sur les facteurs d'ajustement choisis selon la littérature actuelle ou avec le hdPS. Dans ces deux types d'analyse, les AINS étaient associés à un surrisque de FCS, les différences observées dans les risques estimés pouvant s'expliquer en partie par la différence entre les estimands théoriques ciblés par les approches. Nos travaux permettent de confirmer la contribution des méthodes statistiques à atténuer le biais de confusion. Ils soulignent aussi des difficultés majeures rencontrées lors de leur application en pratique en lien avec la complexité de la modélisation et du plan d'étude, ainsi qu'avec leur coût computationnel
Healthcare administrative databases are increasingly used in pharmacoepidemiology. However, the existence of unmeasured and uncontrolled confounders can bias analyses. In this work, we explore the value of leveraging the richness of data through large-scale selection of a large number of measured covariates correlated with unmeasured confounders to indirectly adjust for them. This concept is the cornerstone of the High-dimensional propensity score (hdPS), and we apply the same approach to G-computation (GC) and Targeted Maximum Likelihood Estimation (TMLE). Although these methods have been evaluated in some simulation studies, their performance on large real-world databases remains underexplored. This thesis aims to assess their contributions to mitigating the effect of directly or indirectly measured confounders in the French administrative health care database (SNDS) for pharmacoepidemiological studies in pregnant women. In Chapter 2, we used a set of reference drugs related to prematurity to compare the performance of the three methods. All reduced confounding bias, with GC showing the best performance. In Chapter 3, we conducted an hdPS analysis in a more complex modeling setting to investigate the controversial association between non-steroidal anti-inflammatory drugs (NSAIDs) and miscarriage. We implemented a Cox model with time-dependent variables and the “lag-time” approach to address other biases (immortal time bias and protopathic bias). We compared analyses adjusted for factors chosen according to the current literature with those chosen by the hdPS algorithm. In both types of analysis, NSAIDs were associated with an increased risk of miscarriage, and the observed differences in estimated risks could partly be explained by the difference between the causal estimands targeted by the approaches. Our work confirms the contribution of statistical methods to reducing confounding bias. It also highlights major challenges encountered during their practical application, related to the complexity of modeling and study design, as well as their computational cost
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Simpson, Lisa Marie. "Computational studies of G protein-coupled receptor activation". Thesis, University of Essex, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520117.

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Heo, Jiyoung Beauchamp Jesse L. "Computational studies of orphan G protein-coupled receptors /". Diss., Pasadena, Calif. : California Institute of Technology, 2007. http://resolver.caltech.edu/CaltechETD:etd-11102006-144154.

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Dilner, David. "Profitability = f(G) : Computational Thermodynamics, Materials Design and Process Optimization". Doctoral thesis, KTH, Materialvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-191243.

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The thesis starts by giving a motivation to materials modeling as a way to increase profitability but also a possibility decrease the environmental impact. Fundamental concepts of relevance for this work are introduced, this include the materials genome, ICME and of course the CALPHAD method. As a demonstration promising results obtained by an ICME approach using genetic algorithms and CALPHAD on the vacuum degassing process are presented. In order to make good predictive calculations and process models it is important to have good thermodynamic descriptions. Thus most part of the work has concerned the thermodynamic assessments of systems of importance for steelmaking, corrosion and similar processes. The main focus has been the assessment of sulfur-containing systems and thermodynamic descriptions of the Fe-Mn-Ca-Mg-S, Fe-Ca-O-S, Fe-Mg-O and Mg-Mn-O systems are presented. In addition, heat capacity measurements of relevance for the Mg-Mn-O system have been performed. To summarize the efforts some application examples concerning thermodynamic calculations related to steelmaking and inclusion formation are shown.

QC 20160829


COMPASS
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Baragatti, Meïli. "Sélection bayésienne de variables et méthodes de type Parallel Tempering avec et sans vraisemblance". Thesis, Aix-Marseille 2, 2011. http://www.theses.fr/2011AIX22100/document.

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Cette thèse se décompose en deux parties. Dans un premier temps nous nous intéressons à la sélection bayésienne de variables dans un modèle probit mixte.L'objectif est de développer une méthode pour sélectionner quelques variables pertinentes parmi plusieurs dizaines de milliers tout en prenant en compte le design d'une étude, et en particulier le fait que plusieurs jeux de données soient fusionnés. Le modèle de régression probit mixte utilisé fait partie d'un modèle bayésien hiérarchique plus large et le jeu de données est considéré comme un effet aléatoire. Cette méthode est une extension de la méthode de Lee et al. (2003). La première étape consiste à spécifier le modèle ainsi que les distributions a priori, avec notamment l'utilisation de l'a priori conventionnel de Zellner (g-prior) pour le vecteur des coefficients associé aux effets fixes (Zellner, 1986). Dans une seconde étape, nous utilisons un algorithme Metropolis-within-Gibbs couplé à la grouping (ou blocking) technique de Liu (1994) afin de surmonter certaines difficultés d'échantillonnage. Ce choix a des avantages théoriques et computationnels. La méthode développée est appliquée à des jeux de données microarray sur le cancer du sein. Cependant elle a une limite : la matrice de covariance utilisée dans le g-prior doit nécessairement être inversible. Or il y a deux cas pour lesquels cette matrice est singulière : lorsque le nombre de variables sélectionnées dépasse le nombre d'observations, ou lorsque des variables sont combinaisons linéaires d'autres variables. Nous proposons donc une modification de l'a priori de Zellner en y introduisant un paramètre de type ridge, ainsi qu'une manière de choisir les hyper-paramètres associés. L'a priori obtenu est un compromis entre le g-prior classique et l'a priori supposant l'indépendance des coefficients de régression, et se rapproche d'un a priori précédemment proposé par Gupta et Ibrahim (2007).Dans une seconde partie nous développons deux nouvelles méthodes MCMC basées sur des populations de chaînes. Dans le cas de modèles complexes ayant de nombreux paramètres, mais où la vraisemblance des données peut se calculer, l'algorithme Equi-Energy Sampler (EES) introduit par Kou et al. (2006) est apparemment plus efficace que l'algorithme classique du Parallel Tempering (PT) introduit par Geyer (1991). Cependant, il est difficile d'utilisation lorsqu'il est couplé avec un échantillonneur de Gibbs, et nécessite un stockage important de valeurs. Nous proposons un algorithme combinant le PT avec le principe d'échanges entre chaînes ayant des niveaux d'énergie similaires dans le même esprit que l'EES. Cette adaptation appelée Parallel Tempering with Equi-Energy Moves (PTEEM) conserve l'idée originale qui fait la force de l'algorithme EES tout en assurant de bonnes propriétés théoriques et une utilisation facile avec un échantillonneur de Gibbs.Enfin, dans certains cas complexes l'inférence peut être difficile car le calcul de la vraisemblance des données s'avère trop coûteux, voire impossible. De nombreuses méthodes sans vraisemblance ont été développées. Par analogie avec le Parallel Tempering, nous proposons une méthode appelée ABC-Parallel Tempering, basée sur la théorie des MCMC, utilisant une population de chaînes et permettant des échanges entre elles
This thesis is divided into two main parts. In the first part, we propose a Bayesian variable selection method for probit mixed models. The objective is to select few relevant variables among tens of thousands while taking into account the design of a study, and in particular the fact that several datasets are merged together. The probit mixed model used is considered as part of a larger hierarchical Bayesian model, and the dataset is introduced as a random effect. The proposed method extends a work of Lee et al. (2003). The first step is to specify the model and prior distributions. In particular, we use the g-prior of Zellner (1986) for the fixed regression coefficients. In a second step, we use a Metropolis-within-Gibbs algorithm combined with the grouping (or blocking) technique of Liu (1994). This choice has both theoritical and practical advantages. The method developed is applied to merged microarray datasets of patients with breast cancer. However, this method has a limit: the covariance matrix involved in the g-prior should not be singular. But there are two standard cases in which it is singular: if the number of observations is lower than the number of variables, or if some variables are linear combinations of others. In such situations we propose to modify the g-prior by introducing a ridge parameter, and a simple way to choose the associated hyper-parameters. The prior obtained is a compromise between the conditional independent case of the coefficient regressors and the automatic scaling advantage offered by the g-prior, and can be linked to the work of Gupta and Ibrahim (2007).In the second part, we develop two new population-based MCMC methods. In cases of complex models with several parameters, but whose likelihood can be computed, the Equi-Energy Sampler (EES) of Kou et al. (2006) seems to be more efficient than the Parallel Tempering (PT) algorithm introduced by Geyer (1991). However it is difficult to use in combination with a Gibbs sampler, and it necessitates increased storage. We propose an algorithm combining the PT with the principle of exchange moves between chains with same levels of energy, in the spirit of the EES. This adaptation which we are calling Parallel Tempering with Equi-Energy Move (PTEEM) keeps the original idea of the EES method while ensuring good theoretical properties and a practical use in combination with a Gibbs sampler.Then, in some complex models whose likelihood is analytically or computationally intractable, the inference can be difficult. Several likelihood-free methods (or Approximate Bayesian Computational Methods) have been developed. We propose a new algorithm, the Likelihood Free-Parallel Tempering, based on the MCMC theory and on a population of chains, by using an analogy with the Parallel Tempering algorithm
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Libri sul tema "G-Computation"

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Altinakar, M. S. Computational modeling for the development of sustainable water-resources systems in Poland: US-Poland Technology Transfer Program US-AID award number: EEE-G-00-02-00015-00. Warszawa: Institute of Geophysics, Polish Academy of Science, 2005.

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Vychislitelʹnai︠a︡ filogenetika i genosistematika (2007 Moscow, Russia). Vychislitelʹnai︠a︡ filogenetika i genosistematika "VFGS'2007": K 50-letii︠u︡ stanovlenii︠a︡ otechestvennoĭ filogenetiki i genosistematiki : materialy mezhdunarodnoĭ konferent︠s︡ii, 16-19 noi︠a︡bri︠a︡ 2007 g., g. Moskva = Computational phylogenetics and molecular systematics "CPMS' 2007" : commemorating the 50th anniversary of Molecular Phylogenetics and Systematics in Russia conference proceedings, November 16-19, 2007, Moscow, Russia. Moskva: T-vo nauch. izdaniĭ KMK, 2007.

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Vychislitelʹnai︠a︡ filogenetika i genosistematika (2007 Moscow, Russia). Vychislitelʹnai︠a︡ filogenetika i genosistematika "VFGS'2007": K 50-letii︠u︡ stanovlenii︠a︡ otechestvennoĭ filogenetiki i genosistematiki : materialy mezhdunarodnoĭ konferent︠s︡ii, 16-19 noi︠a︡bri︠a︡ 2007 g., g. Moskva = Computational phylogenetics and molecular systematics "CPMS' 2007" : commemorating the 50th anniversary of Molecular Phylogenetics and Systematics in Russia conference proceedings, November 16-19, 2007, Moscow, Russia. Moskva: T-vo nauch. izdaniĭ KMK, 2007.

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International Conference of Mathematical Modeling and Computational Experiments (3rd 2002 Dushanbe, Tajikistan). Materialy 3-eĭ Mezhdunarodnoĭ konferent︠s︡ii po matematicheskomu modelirovanii︠u︡ i vychislitelʹnomu ėksperimentu, Dushanbe, 10-12 dekabri︠a︡ 2002 g. = Tajik State National University : proceedings of the 3rd International Conference of Mathematical Modeling and Computational Experiments, Dushanbe,December 10-12, 2002. Dushanbe: Tadzhikskiĭ gos. natsional'nyĭ universitet, 2002.

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Adamatzky, Andrew. Emergent Computation: A Festschrift for Selim G. Akl. Springer, 2016.

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Adamatzky, Andrew. Emergent Computation: A Festschrift for Selim G. Akl. Springer, 2018.

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Adamatzky, Andrew. Emergent Computation: A Festschrift for Selim G. Akl. Springer International Publishing AG, 2016.

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Enright, Brian E. Fractions, Decimals: Teachers Guide/Books E,F,G,L,M (Enright Computation Series, Th789). Curriculum Associates Inc, 1986.

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Bausch, Win. OPERA-G: A microkernel for computational grids. 2004.

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Guide: Guide for the Verification and Validation of Computational Fluid Dynamics Simulations (AIAA G-077-1998(2002)). Washington, DC: American Institute of Aeronautics and Astronautics, Inc., 1998. http://dx.doi.org/10.2514/4.472855.

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Capitoli di libri sul tema "G-Computation"

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Romero, G., M. G. Arenas, J. G. Castellano, P. A. Castillo, J. Carpio, J. J. Merelo, A. Prieto e V. Rivas. "Evolutionary Computation Visualization: Application to G-PROP". In Parallel Problem Solving from Nature PPSN VI, 902–12. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45356-3_88.

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Chakraborty, Bibhas, e Erica E. M. Moodie. "G-computation: Parametric Estimation of Optimal DTRs". In Statistical Methods for Dynamic Treatment Regimes, 101–12. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7428-9_6.

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Haqiqi, Iman, e Uris Lantz C. Baldos. "Computation and Baseline: Efficient Methods for Solving a Large System of Equations for Projection and Scenario Analysis". In SIMPLE-G, 103–11. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-68054-0_8.

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AbstractThe human system’s responses to climate change and conservation policies are often spatially heterogeneous. However, traditional large-scale environmental models often lack the market linkages and spatial granularity necessary to effectively capture these vital linkages. Understanding these responses requires quantitative geospatial modeling that integrates economic and biophysical variables. However, solving these large-scale models is difficult due to high interconnectivity through markets. To address this computational challenge, this chapter explores the promising potential of SIMPLE-G as an example of gridded quantitative models that connect local decisions about land, water, and agricultural production to regional and global markets.
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Fikioris, George. "Generalized Hypergeometric Functions, Meijer G-Functions, and Their Numerical Computation". In Mellin-Transform Method for Integral Evaluation, 17–20. Cham: Springer International Publishing, 2007. http://dx.doi.org/10.1007/978-3-031-01697-4_3.

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Herrmann, Christoph. "Efficient Computation of Waiting Time Moments for the DBMAP/G/1/N Queue". In IFIP Advances in Information and Communication Technology, 481–96. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-0-387-35353-1_24.

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Cornelissen, Gunther, e Norbert Peyerimhoff. "Examples of Homologically Wide Actions". In Twisted Isospectrality, Homological Wideness, and Isometry, 73–83. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-27704-7_9.

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AbstractAn action of a finite group G on a manifold M is homologically wide if the first homology of the manifold contains the regular representation of the group. In this chapter, we study this notion independently of the rest of this monograph. We first study the case where M is a surface and G acts freely, using the Lefschetz fixed point formula. We then recall a result of Broughton on the homology representation that allows us to deal with the case of a general action on a Riemann surface. After this, we switch to higher dimensional manifolds. We first recall Curtis’s theory of the virtual Lefschetz characters, and use results of Cooper and Long to construct examples and counterexamples to homological wideness in all dimensions ≥ 3. Finally, we study locally symmetric spaces. Property (T) implies that only the case of rank 1 is interesting, where we make some remarks on the relation to automorphic representations and Mostow rigidity. Finally, we study an example of using torsion homology: Mednykh’s explicit computation of the homology representation of the Seifert-Weber dodecahedral space, which we identify with a known modular representation through Brauer characters.
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Romero, Jazmín, e Alejandro López-Ortiz. "The ${\mathcal{G}}$ -Packing with t-Overlap Problem". In Algorithms and Computation, 114–24. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-04657-0_13.

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Dvořák, Zdeněk, e Vít Jelínek. "On the Complexity of the G-Reconstruction Problem". In Algorithms and Computation, 196–205. Berlin, Heidelberg: Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11602613_21.

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Zhu, Xin-jie. "A Finite Spectrum Unmixing Set For \mathcal{G}\mathcal{L}{\text{(3,}}\mathcal{R}{\text{)}}". In Computation and Control, 403–10. Boston, MA: Birkhäuser Boston, 1989. http://dx.doi.org/10.1007/978-1-4612-3704-4_30.

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Li, Quan-Lin. "Markov Chains of GI/G/1 Type". In Constructive Computation in Stochastic Models with Applications, 131–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-11492-2_3.

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Atti di convegni sul tema "G-Computation"

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Alsunaidi, Abdullah, Safwat Abdel-Azeim, C. Richard Catlow, Alexey Sokols e Scott Woodley. "Charge Transfer in the Fe/g-C3N4/MoS2 Heterojunction: A Computational Study". In 2024 IEEE 14th International Conference Nanomaterials: Applications & Properties (NAP), 1–4. IEEE, 2024. http://dx.doi.org/10.1109/nap62956.2024.10739735.

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Spera, Emiliano, Giovanni Gallo, Dario Allegra, Filippo Stanco, Andrea Maugeri, Annalisa Quattrocchi, Martina Barchitta e Antonella Agodi. "Randomized G-Computation Models in Healthcare Systems". In 2018 IEEE 31st International Symposium on Computer-Based Medical Systems (CBMS). IEEE, 2018. http://dx.doi.org/10.1109/cbms.2018.00021.

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Wang, Changping, Chaokun Wang, Gaoyang Guo, Xiaojun Ye e Philip S. Yu. "Efficient Computation of G-Skyline Groups (Extended Abstract)". In 2018 IEEE 34th International Conference on Data Engineering (ICDE). IEEE, 2018. http://dx.doi.org/10.1109/icde.2018.00242.

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Zacharewicz, G., N. Giambiasi e C. Frydman. "Improving the lookahead computation in G-DEVS/HLA environment". In DS-RT 2005 Proceedings. Ninth IEEE International Symposium on Distributed Simulation and Real-Time Applications. IEEE, 2005. http://dx.doi.org/10.1109/distra.2005.24.

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Zhang, Jie, Yan Chen, Xiang Hu, Jiwei Hu e Lintao Yang. "G-Computation Demonstration in Causal Mediation Analysis with Multiple Mediators". In 2022 IEEE 2nd International Conference on Software Engineering and Artificial Intelligence (SEAI). IEEE, 2022. http://dx.doi.org/10.1109/seai55746.2022.9832193.

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Liu, Fuhao, Yongmin Shuai, Xin Zhang, Yunfei Xiong e Yong Zeng. "G-Computation Demonstration in Estimating Causal Effects with Time-Dependent Confounding". In 2022 IEEE 2nd International Conference on Software Engineering and Artificial Intelligence (SEAI). IEEE, 2022. http://dx.doi.org/10.1109/seai55746.2022.9832345.

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Spitler, Jeffrey, e Jack Cook. "Faster computation of g-functions used for modeling of ground heat exchangers". In 2021 Building Simulation Conference. KU Leuven, 2021. http://dx.doi.org/10.26868/25222708.2021.31086.

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Bean, Andrew, Nachiket Kapre e Peter Cheung. "G-DMA: improving memory access performance for hardware accelerated sparse graph computation". In 2015 International Conference on ReConFigurable Computing and FPGAs (ReConFig). IEEE, 2015. http://dx.doi.org/10.1109/reconfig.2015.7393317.

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Amiri, Neda Kazemian, Sied Mehdi Fakhraie, Gholam-Ali Hosein-Zadeh e Sied Mahmoud Mousavinejad. "Modeling of ITU-T G.729 codec with bit-width optimization for intensive computation blocks". In 2007 International Conference on Microelectronics - ICM. IEEE, 2007. http://dx.doi.org/10.1109/icm.2007.4497659.

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Jin, Yue, Chengying Huan, Heng Zhang, Yongchao Liu, Shuaiwen Leon Song, Rui Zhao, Yao Zhang, Changhua He e Wenguang Chen. "G-Sparse: Compiler-Driven Acceleration for Generalized Sparse Computation for Graph Neural Networks on Modern GPUs". In 2023 32nd International Conference on Parallel Architectures and Compilation Techniques (PACT). IEEE, 2023. http://dx.doi.org/10.1109/pact58117.2023.00020.

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Rapporti di organizzazioni sul tema "G-Computation"

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Smith, Bradley W. Distributed Computing for Signal Processing: Modeling of Asynchronous Parallel Computation. Appendix G. On the Design and Modeling of Special Purpose Parallel Processing Systems. Fort Belvoir, VA: Defense Technical Information Center, maggio 1985. http://dx.doi.org/10.21236/ada167622.

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Bryan Sallee, Colleen E. Characterization of Reference Material 8210:. Gaithersburg, MD: National Institute of Standards and Technology, 2024. http://dx.doi.org/10.6028/nist.sp.260-248.

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The National Institute of Standards and Technology (NIST) Reference Material (RM) 8210 Hemp Plant delivers non certified values for cannabinoids and toxic elements in a dried ground hemp plant material to help cannabis and forensic laboratories for use as a control and research material. A unit of RM 8210 contains three sample packets (approximately 1.5 g each), each sealed with a desiccant pouch in an aluminized polyester bag. This publication documents the production, analytical methods, and computations involved in characterizing this product.
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Tow Leong, Tiang, Mohd Saufi Ahmad, Ang Qian Yee, Syahrun Nizam Md Arshad@Hashim, Mohd Faizal Mohd Zahir, Mohd Azlizan Moh Adib, Nazril Husny, Tan Kheng Kwang e Dahaman Ishak. HANDBOOK OF ELECTRICAL SYSTEM DESIGN FOR NON-DOMESTIC BUILDING. Penerbit Universiti Malaysia Perlis, 2023. http://dx.doi.org/10.58915/techrpt2023.001.

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This technical report presents the electrical system installation design for development of a factory with 1 storey and 2 storey of offices. Firstly, the general methodology of designing the electrical system are elaborated in this report. As overall, the methodologies in designing the components of the electrical system are explained and elaborated, which included: (a) load and maximum demand estimation; (b) miniature circuit breaker (MCB) selection; (c) moulded case circuit breaker (MCCB) selection; (d) air circuit breaker (ACB) selection, (e) residual current device (RCD) selection; (f) protection relay selection; (g) current transformer (CT) selection; (h) sizing selection for cable and live conductors; (i) capacitor bank selection for power factor correction (PFC); and (j) distribution transformer and its protection devices selection. Then, the electrical system of this project is computed and designed by using the methodologies aforementioned. Firstly, the electrical system of various distribution boards (DBs) with the protection/metering devices along with its phase and earthing cables for every final circuits are designed and installed in the factory. Next, the installation is proceeded with the electrical system of main switchboard (MSB) with the protection/metering devices along with its phase and earthing cables for every DBs. Also, the electrical system of PFC by using detuned capacitor bank with various protection/metering devices is designed and built in the plant. Apart from that, the factory is equipped with the electrical system of high tension (HT) room that included the distribution power transformer with the protection/metering devices along with its phase and earthing cables. Lastly, the methodologies and the computation design of the electrical system installation in the context of connected load, load currents, maximum demand, MCB, MCCB, ACB, RCD, protection relay, metering CTs, live cable, protection conductor/earth cable, detuned capacitor bank, and distribution transformer, are prepared according to several important standards, for instance, the MS IEC 60364, Electrical Installations for Buildings, Suruhanjaya Tenaga (ST) – Non-Domestic Electrical Installation Safety Code, Electricity Supply Application Handbook, Tenaga Nasional Berhad (TNB).
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Vold, E. Synopsis of some preliminary computational studies related to unsaturated zone transport at Area G. Office of Scientific and Technical Information (OSTI), marzo 1998. http://dx.doi.org/10.2172/650172.

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Shukla, Manoj K., Luidmyla K. Sviatenko, Sergly I. Okovytyy, Danuta Leszczynska e Jerzy Leszczynski. Catalytic Role of Solvated Electron in the Spontaneous Degradation of Insensitive Munition Compounds : Computational Chemistry Investigation. Engineer Research and Development Center (U.S.), luglio 2021. http://dx.doi.org/10.21079/11681/41122.

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The DNAN (2,4-dinitroanisole), NTO (3-nitro-1,2,4-triazol-5-one), and NQ (nitroguanidine) are important insensitive energetic materials used in military applications. They may find their way to the environment during manufacturing, transportation, storage, training, and disposal. A detailed investigation of possible mechanisms for self-degradation of radical-anions formed by addition of solvated electron to DNAN, NTO, and NQ species was performed by computational study using the PCM(Pauling)/M06-2X/6-311++G(d,p) approach. Obtained results suggest that only NQ radical-anion is able for self-degradation by elimination of nitrite anion. Formation of urea radical on the earlier stage of the NQ radical-anion degradation was also predicted.
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Borgwardt, Stefan, Felix Distel e Rafael Peñaloza. Gödel Description Logics: Decidability in the Absence of the Finitely-Valued Model Property. Technische Universität Dresden, 2013. http://dx.doi.org/10.25368/2022.199.

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In the last few years there has been a large effort for analysing the computational properties of reasoning in fuzzy Description Logics. This has led to a number of papers studying the complexity of these logics, depending on their chosen semantics. Surprisingly, despite being arguably the simplest form of fuzzy semantics, not much is known about the complexity of reasoning in fuzzy DLs w.r.t. witnessed models over the Gödel t-norm. We show that in the logic G-IALC, reasoning cannot be restricted to finitely valued models in general. Despite this negative result, we also show that all the standard reasoning problems can be solved in this logic in exponential time, matching the complexity of reasoning in classical ALC.
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Kotliar, Gabriel. Final Report of the CMSN team working on computational-design-Fe-based-superconductors ( 8/31/10-8/31/13). Team Leader G. Kotliar Rutgers University. (DE-SC0005468). Office of Scientific and Technical Information (OSTI), novembre 2014. http://dx.doi.org/10.2172/1163667.

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