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Artigos de revistas sobre o assunto "Newmark (1965)'s method"
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Lindasari, Maya Nur. "A Study of Diction in the Indonesian Translation Binatangisme from George Orwell`s Animal Farm". Humanitatis : Journal of Language and Literature 7, n.º 2 (3 de julho de 2021): 117–28. http://dx.doi.org/10.30812/humanitatis.v7i2.1224.
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This article examined the Indonesian translation of the novel Animal Farm by George Orwell (1945). It was translated into Binatangisme by Mahbub Djunaidi, published in 1983. The diction of the novel was highlighted because diction was one of the important elements in the acceptability and accuracy words in literary works that need to be considered. There are three categories of dictions which analyzed in this article such as translation of pronoun, translation of cultural adaptation, and translation of terms and sentencing as proposed by Newmark (1988) and Nida (1964). The qualitative method in the form of content analysis was applied to obtain information data that are objective, systematic, and descriptive quantitative about what appears in the choice of diction. The data were collected through close reading which highlighting or giving comments in the forms of monologues and dialogues as well as phrases and sentences. While the data analysis was compared between the source language and the target language. As the result, the translation was near to the target language culture. Mostly, the translator tend to describe the meaning through detailed explanation and used more specific meaning words.
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Rojas Gomez, Luis Felipe, Lesly Scarlet Ortiz Galindo e Jesús Andrés Cabrera Conislla. "Seismic displacement prediction methods, procedure, comparison and application". TECNIA 33, n.º 1 (6 de junho de 2023): 21–30. http://dx.doi.org/10.21754/tecnia.v33i1.1335.
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The methodology in the seismic design of slopes has evolved with technological advancement and the development of geotechnical engineering, methods with great limitations such as pseudostatic analysis to rigorous methods that require a lot of information for a better understanding of the behavior of the soil such as the dynamic analysis. This article develops the procedure, comparison and application of simplified earthquake-induced displacement methods, which are the Newmark method (1965), the Makdisi & Seed method (1978), the Bray and Travasarou method (2007), and the method of Bray, Macedo and Travasarou (2018). Each of these methods of simplified earthquake-induced displacements is associated with a model that explains the behavior of the sliding mass, of which the rigid block model, the decoupled model and the coupled model are analyzed in this article.
As an applicative case, an earthen dam with rocky and central core 50 m high placed in sandstone strata and moraine deposits interspersed with shale intrusions is shown, as seismic consideration the Lima 1974 earthquake, the Attic 2001 earthquake and the earthquake were used. of Pisco 2007, considering both NS and EW directions. Likewise, the response spectrum on the fault surface, resulting from a response analysis to 3 columns in the dam, is considered as information. The methods of Newmark (1965), Makdisi & Seed (1978), Bray and Travasarou (2007), and Bray, Macedo and Travasarou (2018) were applied, obtaining deformation results between 1 to 10 cm that according to their order of magnitude represent a stable condition for the dam.
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Hayat Khiy, M. Sikander. "Implementation of Newmark`s Method for Second Order Initial Value Problems". Journal of Applied Sciences 5, n.º 3 (15 de fevereiro de 2005): 402–10. http://dx.doi.org/10.3923/jas.2005.402.410.
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Sutikno, Eka Ugi. "Erotism and the Translation of the Poetry "Di Antara Kita" by Ajip Rosidi and "Nyanyian Duniawi" by W.S. Rendra". SUAR BETANG 18, n.º 1 (3 de junho de 2023): 21–40. http://dx.doi.org/10.26499/surbet.v18i1.6452.
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Undoubtedly W. S. Rendra's poem “Nyanyian Dunia” can be brought closer to semantics, worldviews, and humanities values. However, the three things above become a contrast when faced with research that focuses on eroticism and Newmark's method of translation. Mainly “Di Antara Kita” by Ajip Rosidi, which has not yet been analyzed. This study aims to explain how erotic texts are presented to create aesthetics in poetry writing and how the three poems above are translated through the perspective of the Newmark translation method. The method used in this article is qualitative. The results show that “Di Antara Kita” on ‘Between Us’ and “Nyanyian Duniawi” on ‘A Worldly Song’, translated by Harry Aveling above, is dominated by the free translation method, and the diction contained in the source text and translation cannot be classified into in pornographic texts. The conclusion is that eroticism in the two poems above is confronted with the choice of diction, so the poems “Di Antara Kita” and “Nyanyian Duniawi” are not included in pornography, which is so verbal and obscene. Also, the eroticism in the two poems above reflects the desire of the two subjects who want each other’s love and bodies. AbstrakTidak diragukan lagi, puisi W. S. Rendra yang berjudul “Nyanyian Dunia” memiliki nilai semantik, pandangan dunia, dan humaniora yang kental. Akan tetapi, ketiga hal itu menjadi kontras ketika dihadapkan pada penelitian yang menitikberatkan pada erotisme dan metode penerjemahan ala Newmark. Terlebih “Di Antara Kita” karya Ajip Rosidi yang belum pernah dianalisis. Tujuan kajian ini ialah menjelaskan bagaimana teks erotisme dihadirkan untuk menciptakan estetika dalam penulisan puisi dan bagaimana ketiga puisi di atas diterjemahkan melalui perspektif metode penerjemahan Newmark. Penelitian ini menggunakan metode kualitatif. Analisis menunjukkan bahwa “Antara Kita” atas Between Us dan “Nyanyian Duniawi” atas A Worldly Song yang diterjemahkan oleh Harry Aveling didominasi oleh metode free translation dan diksi yang terdapat di dalam teks sumber dan terjemahan tidak dapat digolongkan ke dalam teks pornografi. Simpulan yang diperoleh adalah erotisme di kedua puisi itu dihadapkan pada pemilihan diksi sehingga tidak termasuk ke dalam pornografi yang begitu verbal dan cabul. Erotisme di kedua puisi di atas mencerminkan adanya hasrat dari dua subjek yang saling menginginkan cinta dan tubuh mereka.
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Duan, Shao Wei, Wei Huang e Xian Tan. "Energy Dissipation Analysis of Composite Frame Structure with Supplemental Viscous Dampers". Applied Mechanics and Materials 501-504 (janeiro de 2014): 1498–502. http://dx.doi.org/10.4028/www.scientific.net/amm.501-504.1498.
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With a 10 layer of concrete filled square steel tubular column beam frame structure as the object of study ,discrete structure into multiparticle system and establish a dynamic differential equation,solve this dynamic equation by Newmark -β method .Establish thefinite element model of the structure is based on Sap2000 ,then dynamic elastic-plastic time history analysis are carried out, the research results show that the dynamic characteristics of structure,s story drifts,story shear and acceleration with energy dissipating devices are smaller than the model without energy dissipating devices under different earthquake intensities. the damped effect is considered obvious.
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CHANG, SHUENN-YIH. "CAPABILITY TO CAPTURE DYNAMIC LOADING IN LINEAR DYNAMIC ANALYSIS OF SINGLE DEGREE OF FREEDOM SYSTEMS". International Journal of Structural Stability and Dynamics 13, n.º 05 (28 de maio de 2013): 1350012. http://dx.doi.org/10.1142/s0219455413500120.
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In this work, the importance of the capability to capture dynamic loading for an integration method is emphasized. In a step-by-step integration procedure, amplitude distortions in the transient and steady-state responses depend on the step discretization error of dynamic loading for each time step. Correlations between amplitude distortion and step discretization error for dynamic loadings are analytically established for a specified integration method. These correlations may be considered as the basic numerical properties in evaluating a step-by-step integration method. As a result, the superiority of the previously published algorithm (PPA) [S. Y. Chang, Int. J. Numer. Meth. Eng.77(8) (2009) 1100–1120] over its modified form and the member of Newmark family method (MNM) with β = γ = 1/2 in capturing dynamic loading is analytically verified (even though the three algorithms have exactly the same characteristic equation).
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Zheng, Hao, Hongfu Wang, Qiang Zhou, Jingjing Li, Junsong Huang, Baichuan Wang, Xiaorang Liu e Guochuan Yin. "Active control and prediction model for the dynamic shape of laminated plate/shell structures with piezoelectric actuators". Journal of Physics: Conference Series 2764, n.º 1 (1 de maio de 2024): 012013. http://dx.doi.org/10.1088/1742-6596/2764/1/012013.
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Abstract This study establishes an active control and prediction model for the dynamic shape of laminated plates/shells with piezoelectric actuators. Firstly, transient responses of shell structures are numerically calculated by adopting the finite element method (FEM) and the Newmark formulae, then the Kuhn-Tucker equation is utilized to get the time-varying voltage values with a minimum shape control error. Subsequently, a backpropagation neural network (BPNN) is constructed to predict the control precision for cases with different piezoelectric actuator layouts. Finally, the proposed control model is demonstrated through numerical examples with a maximum relative control error of only 0.023% for a given desired shape and the average error of the prediction model with 98 input neurons is 18%, thereby satisfying the application requirements. Furthermore, for a model with 3870 degrees of freedom and 21 discrete time points, the computational time is reduced significantly from 8.24 s to 0.002 s through the prediction model, making it highly suitable for optimization problems by utilizing heuristic algorithms.
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Guo, Pan, Wen-Hua Wu e Jun Zhao. "Modelling of Generalised Thermoelastic Wave Propagation of Multilayer Material under Thermal Shock Behaviour". Shock and Vibration 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/8398673.
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This paper describes a time-discontinuous Galerkin finite element method (DGFEM-βc) for the generalised thermoelastic problem of multilayer materials subjected to a transient high-frequency heat source. The governing and constitutive relations are presented on the basis of the well-known Lord–Shulman (L–S) theory. A DGFEM-βc method is developed to allow the general temperature-displacement vector and its temporal gradient to be discontinuous at a fixed time t. A stiffness proportional artificial damping term is added to the final DG discretisation form to filter out the spurious numerical oscillations in the wave-after stage and at adjacent-layer interfaces. The numerical results show that the present DGFEM-βc provides much more accurate solutions for generalised thermoelastic coupled behaviour of multilayer structures. Compared with widely used traditional numerical methods (e.g., the Newmark method), the present DGFEM-βc can effectively capture the discontinuities behaviours of impulsive waves in space in the simulation of high modes and sharp gradients.
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Fadlila, Hapsari, e Nunuk Nur Shokiyah. "KAJIAN SENI LUKIS KARYA DJOKO PEKIK DENGAN TEMA PERISTIWA SEPTEMBER 1965". Brikolase : Jurnal Kajian Teori, Praktik dan Wacana Seni Budaya Rupa 12, n.º 2 (15 de fevereiro de 2021): 109–20. http://dx.doi.org/10.33153/brikolase.v12i2.3357.
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Kajian Karya Seni Lukis Djoko Pekik dengan Tema Peristiwa September 1965, skripsi Hapsari Fadlila. Program Studi Seni Rupa Murni, Jurusan Seni Rupa Murni, Fakultas Seni Rupa dan Desain, Institut Seni Indonesia Surakarta. Skripsi ini meneliti tentang karya-karya Djoko Pekik dengan tema Peristiwa September 1965. Permasalahan yang akan di bahas adalah latar belakang penciptaan dan estetika karya seni lukis Djoko Pekik dengan tema Peristiwa September 1965. Metode penelitian yang digunakan adalah metode penelitian kualitatif dengan analisis interaktif dan interpretasi. Teori untuk membedah interpretasi tanda yang terdapat dalam lukisan menggunakan teori semiotika Charles S. Pierce yaitu klasifikasi tanda menurut obyek. Hasil dari penelitian ini adalah bahwa pada latar belakang penciptaan karya bertema Peristiwa September 1965, Djoko Pekik berusaha mengungkapkan pengalaman yang dirasakan ketika terjadinya peristiwa-peristiwa di bulan September 1965. Penelitian ini mengupas tiga karya Djoko Pekik yaitu Awal Bencana Di Lintang Kemukus 1965, Kali Berantas Bengawan Solo Luweng dan Sirkus Adu Badak. Karya-karya tersebut terdapat ikon, indek dan simbol merupakan visualisasi tentang kejadian yang dialami Djoko Pekik di tahun 1965. Dimulai dari kemunculan lintang kemukus, ketika Djoko Pekik menjadi tahanan dan awal memasuki Orde Baru.Kata kunci: Djoko Pekik, Seni Lukis, Peristiwa September 1965Study of Djoko Pekik Painting Artwork themed the September 1965 Incidents, Hapsari Fadlila's thesis. Pure Arts Study Program, Department of Fine Arts, Faculty of Art and Design, Indonesian Institute of the Arts Surakarta. This thesis examines the Djoko Pekik’s works themed the September 1965 Incidents. The issues that will be discussed are the background of the creating and aesthetics of painting by Djoko Pekik themed the September 1965 Incidents. The research method used is qualitative research with interactive and interpretation analysize. The theory for dissecting the interpretation of the signs which iscontained in the painting uses Charles S. Pierce's semiotic theory namely classification of signs according to objects. The results of this research are that in the background of creating this work themed the September 1965 incident, Djoko Pekik tried to express the experiences which he felt during the incidents in September 1965. This research explores three Djoko Pekik’s works, namely Awal Bencana Di Lintang Kemukus 1965, Kali Berantas Bengawan Solo Luweng and Sirkus Adu Badak.The works contained icons, indexes and symbols which are a visualization about the incidents experienced by Djoko Pekik in 1965. Begins from lintang kemukus, when Djoko Pekik became a prisoner and early Orde Baru. Keywords : Djoko Pekik, Painting Arts, September 1965 Incidents
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Kıral, Zeki. "Numerical Investigation of the Dynamic Response of Symmetric Laminated Composite Beams to Harmonic Excitations". Advanced Composites Letters 18, n.º 5 (setembro de 2009): 096369350901800. http://dx.doi.org/10.1177/096369350901800503.
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The aim of this study is to investigate the dynamic response of a laminated composite beam subjected to a harmonic excitation by a numerical time integration method known as Newmark method. The finite element method based on the classical laminated plate theory is used in order to obtain structural stiffness. The structural damping is modelled as proportional damping which is referred to as Rayleigh damping and two different damping ratios are used. The effect of damping on the frequency response of the beam is investigated for a broad range of excitation frequency. The effect of excitation point on the harmonic response is also considered. Four different lay-up configurations namely [0]2s, [0/90]s, [45/-45]s and [90]2s are considered in order to show the effect of the stacking sequence on the frequency response of the beam. The numerical results presented in this study show that, the magnitude of the harmonic response of the beam reduces considerably as the damping ratio increases and [90]2s lay-up produces largest dynamic response due to the reducing flexural rigidity. Numerical results also show that the location and frequency of the harmonic excitation has important role on the dynamic response of the beam.
Teses / dissertações sobre o assunto "Newmark (1965)'s method"
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Mita, Mara. "Assessment of seismic displacements of existing landslides through numerical modelling and simplified methods". Electronic Thesis or Diss., Université Gustave Eiffel, 2023. http://www.theses.fr/2023UEFL2075.
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Les glissements de terrain sismo-induits sont des effets secondaires fréquents des séismes qui peuvent provoquer des dommages plus importants que les séismes eux-mêmes. Prévoir ces phénomènes est donc essentiel pour la gestion des risques dans les régions sismiques. Les déplacements co-sismiques sont généralement évalués par la méthode « bloc rigide » de Newmark (1965). Malgré ses limites, cette méthode a deux avantages: i) des temps de calcul relativement courts, ii) une compatibilité avec les logiciels SIG pour des analyses à l'échelle régionale. Les modélisations numériques complexes permettent quant à elles de simuler la propagation des ondes sismiques dans les versants et les effets associés. Cependant, elles sont caractérisées par des temps de calcul longs, ce qui limite leur utilisation à l'échelle des versants. L'objectif de cette étude est de mieux comprendre dans quel cas les méthodes analytiques et numériques prédisent des valeurs de déplacements différentes. 216 prototypes de glissements de terrain ont été définis en 2D en combinant des paramètres géométriques et géotechniques déduits de la littérature. Ces modèles ont été soumis à 17 signaux sismiques d'Intensité Arias constante (IA~ 0,1 m/s) et de période moyenne variable. Les résultats ont permis de définir un modèle « Random Forest » préliminaire pour prédire a priori la différence entre les valeurs de déplacements des deux méthodes. Les résultats ont ainsi permis : i) d'identifier les paramètres qui contrôlent les déplacements dans les deux méthodes, ii) de conclure que les différences entre les valeurs de déplacements sont négligeables dans la plupart des cas pour cette valeur de IALandslides are common secondary effects related to earthquakes which can be responsible for greater damages than the ground shaking alone. Predicting these phenomena is therefore essential for risk management in seismic regions. Nowadays, landslides permanent co-seismic displacements are assessed by the traditional « rigid-sliding block » method proposed by Newmark (1965). Despite its limitations, this method has two advantages: i) relatively short computation times, ii) compatibility with GIS software for regional-scale analyses. Alternatively, more complex numerical analyses can be performed to simulate seismic waves propagation into slopes and related effects. However, due to their longer computation times, their use is usually limited to slope-scale analyses. This study aims at better understanding in which conditions (i.e. combinations of introduced relevant parameters), analytical and numerical methods predict different landslides earthquake-induced displacements. At this regard, 216 2D landslide prototypes were designed by combining geometrical and geotechnical parameters inferred by statistical analysis on data collected by literature review. Landslide prototypes were forced by 17 signals with constant Arias Intensity (AI ~ 0.1 m/s) and variable mean period. Results allowed defining a preliminary Random Forest model to predict a priori, the expected difference between displacements by the two methods. Analysis of results allowed: i) identifying parameters affecting displacement variation according to the two methods, ii) concluding that in here considered AI level, computed displacements differences are negligible in most of the cases
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Hoffmann, Deborah. "The spirit of sound prosodic method in the poetry of William Blake, W.B. Yeats, and T. S. Eliot". Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=115657.
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Accompanying materials housed with archival copy.This project focuses on the prosody of three major poets, William Blake, W. B. Yeats, and T. S. Eliot. It explores the relationship between each poet's poetic sound structures and his spiritual aims. The project argues that in Blake's prophetic poems The Four Zoas, Milton, and Jerusalem, in Yeats's middle and late poetry, and in Eliot's post-conversion poetry, the careful structuring of the non-semantic features of language serves to model a process through which one may arrive at the threshold of a spiritual reality.
The introductory chapter situates these poets' works within the genre of mystical writing; establishes the epistemological nature of poetic sound and its relationship to mystical expression; considers the historical and personal exigencies that influence each poet's prosodic choices; and outlines the prosodic method by which their poetry is scanned. Chapter one addresses William Blake's efforts to re-vision Milton's Christian epic Paradise Lost by means of a logaoedic prosody intended to move the reader from a rational to a spiritual perception of the self and the world. Chapter two considers the development of W.B. Yeats's contrapuntal prosody as integral to his attempt to make of himself a modern poet and to his antithetical mystical philosophy. Chapter three explores the liminal prosody of T. S. Eliot by which he creates an incantatory movement that points to a spiritual reality behind material reality. The project concludes with a consideration of the spiritual aims of Gerard Manley Hopkins and H.D. (Hilda Doolittle) and posits a revaluation of Hopkins' sprung rhythm and H.D.'s revisionary chain of sound as prosodic practices intrinsic to their spiritual aims.
Capítulos de livros sobre o assunto "Newmark (1965)'s method"
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Han, Chang Dae. "Rheology of Immiscible Polymer Blends". In Rheology and Processing of Polymeric Materials: Volume 1: Polymer Rheology. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195187823.003.0017.
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The polymer industry has been challenged to produce new polymeric materials by blending two or more homopolymers or random copolymers or by synthesizing graft copolymers. To meet the challenge, various methods have been explored, namely, (1) by synthesizing a new monomer, polymerizing it, and then blending it with an existing homopolymer or random copolymer, (2) by copolymerizing existing monomers and then blending it with an existing homopolymer or random copolymer, (3) by chemically modifying an existing homopolymer or random copolymer and then blending it with other homopolymers or copolymers already available, or (4) by synthesizing new compatibilizer(s) to improve the mechanical properties of two immiscible homopolymers or random copolymers that otherwise have unacceptable mechanical properties. There are numerous monographs (Cooper and Estes 1979; Han 1984; Paul and Newman 1978; Platzer 1971, 1975; Sperling 1974; Utracki 1990) describing various aspects of polymer blends. In the 1970s, Han and coworkers (Han 1971, 1974; Han and Kim 1975; Han and Yu 1971a, 1971b, 1972; Han et al. 1973, 1975; Kim and Han 1976) conducted seminal experimental studies on the rheology of immiscible polymer blends and related the observed rheological behavior to blend morphology. Independently, in the same period, Vinogradov and coworkers (Ablazova et al. 1975; Brizitsky et al. 1978; Tsebrenko et al. 1974, 1976; Vinogradov et al. 1975) conducted a series of experimental studies relating the blend rheology to blend morphology. Van Oene (1972, 1978) also pursued, independently, experimental studies for a better understanding of rheology–morphology relationships in immiscible polymer blends. Since then, using different polymer pairs, numerous researchers have conducted experimental studies, which were essentially the same as, or very similar to, the previous experimental studies of Han and coworkers, Vinogradov and coworkers, and van Oene in the 1970s. It is fair to state that those studies in the 1980s and 1990s have not revealed any significant new findings.
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Glyde, Henry R. "Mori And Kinetic Theories Of Liquid 3He". In Excitations in Liquid and Solid Helium, 312–22. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780198510093.003.0020.
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Abstract Lovesey (1975), Yoshida and Takeno (1979), and Pathak and Lücke (1983) have evaluated S(Q, ω) in liquid 3 He using techniques initiated by Mori (1965) and Zwanzig (1966). There are many variants of the Mori method. It was developed initially for classical liquids and its use there is reviewed by Copley and Lovesey (1975). Takeno and Yoshida (1978) and Yoshida and Takeno (1989) have presented a parallel treatment of classical and quantum liquids which provides an excellent introduction to their work. The Mori method is also called the memory function formalism. Here we survey the three applications to 3He emphasizing common features.
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Zarandi, Mohammad Hossein Fazel, e Milad Avazbeigi. "A New Optimization Approach to Clustering Fuzzy Data for Type-2 Fuzzy System Modeling". In Cross-Disciplinary Applications of Artificial Intelligence and Pattern Recognition, 499–508. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-61350-429-1.ch025.
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This chapter presents a new optimization method for clustering fuzzy data to generate Type-2 fuzzy system models. For this purpose, first, a new distance measure for calculating the (dis)similarity between fuzzy data is proposed. Then, based on the proposed distance measure, Fuzzy c-Mean (FCM) clustering algorithm is modified. Next, Xie-Beni cluster validity index is modified to be able to valuate Type-2 fuzzy clustering approach. In this index, all operations are fuzzy and the minimization method is fuzzy ranking with Hamming distance. The proposed Type-2 fuzzy clustering method is used for development of indirect approach to Type-2 fuzzy modeling, where the rules are extracted from clustering fuzzy numbers (Zadeh, 1965). Then, the Type-2 fuzzy system is tuned by an inference algorithm for optimization of the main parameters of Type-2 parametric system. In this case, the parameters are: Schweizer and Sklar t-Norm and s-Norm, a-cut of rule-bases, combination of FATI and FITA inference approaches, and Yager parametric defuzzification. Finally, the proposed Type-2 fuzzy system model is applied in prediction of the steel additives in steelmaking process. It is shown that, the proposed Type-2 fuzzy system model is superior in comparison with multiple regressions and Type-1 fuzzy system model, in terms of the minimization the effect of uncertainty in the rule-base fuzzy system models an error reduction.
Trabalhos de conferências sobre o assunto "Newmark (1965)'s method"
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Adiputra, Ristiyanto, e Tomoaki Utsunomiya. "Finite Element Modelling of Ocean Thermal Energy Conversion (OTEC) Cold Water Pipe (CWP)". In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-78135.
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Abstract An OTEC CWP can be modelled as a submerged free-hanging pipe conveying fluid. The large amount of the required transported deep seawater might cause catastrophic failure of the pipe due to Centrifugal and Coriolis forces driven by the Internal Flow Effect (IEF). To predict the critical velocity, this paper analyzes the stability of the pipe using a Finite Element Method. At the first step, the general motion equation of the pipe is derived and for each term of the equation, its potential energy equation is represented. Using Hermite shape functions, the local matrixes of each element can be obtained based on virtual displacement principle. Flow field and flow direction change at the inlet is considered at the bottom-end of the pipe as a local boundary condition. After the global matrixes of the system are produced, the global boundary conditions are imposed. Finally, the system is solved using the Newmark time-scheme method. The result are then compared to the previous published works of a small scale model. After being verified, the developed FEM will be used to analyze the full-scale model of the OTEC CWP. The result shows that the critical velocity is around 4.5–4.8 m/s.
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Zhang, R., G. S. Li, X. Z. Yao, J. G. Shi, Y. Guo, X. Z. Song, Z. P. Zhu e B. Y. Li. "An Interpretable Method for Formation Pressure Calculation with Embedding Mechanism". In 57th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2023. http://dx.doi.org/10.56952/arma-2023-0094.
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ABSTRACT Formation pressure is a key parameter in the process of oilfield exploration and development. In this study, a novel deep learning model is proposed for accurate calculation of formation pressure. Particularly, making use of the long short-term memory (LSTM) network in solving sequential-data based regression problems, this paper considers the specific domain knowledge of logging and develops a self-interpretable LSTM (SI-LSTM) to calculate the formation pressure. It can dynamically capture the potential correlation between the formation pressure and input variables, and interpretability analysis is conducted for weighting coefficient of characteristics and temporal. Field logging datasets are adopted to evaluate the accuracy and effectiveness of the proposed models. The results indicate that the model embedded mechanism knowledge has greatly improved the prediction accuracy and stability with a mean absolute percentage error of 1.223%. The interpretation results show that the formation pressure has short-term auto-correlation. The proposed method provides a new idea for field calculation of formation pressure, and can be a useful and high-precision scientific alternative to the traditional methods. INTRODUCTION Formation pore pressure is a crucial parameter in the process of exploring and developing oilfields, and accurate prediction of this parameter is essential to reduce the occurrence of wellbore instability, such as overflow (Song et al., 2022). Currently, formation pore pressure prediction methods can be broadly classified into four categories: (1) under-compaction theory-based methods, such as the equivalent depth method (Hottman and Johnson, 1965; Walter and George, 1988; Song et al., 2011) and the Eaton method (Bektas et al., 2015; Ernanda et al., 2018; Yi et al., 2019), which construct the normal compaction trend equation through the mud shale layer and consider only the under-compaction effect; (2) rock mechanics theory-based methods, such as the effective stress method (Sun et al., 2011; Wang et al., 2019) the Bowers formula method (Bowers, 1995; Etminan et al., 2012; Qiang et al., 2020). These methods require a large amount of logging data, experimental data, and statistical regression analysis to determine the empirical coefficients; (3) empirical statistical model methods, such as multiple regression method (Deng et al., 2015) which involves more empirical parameters. The errors of each parameter are superimposed on each other, making the calculation accuracy of formation pore pressure limited; (4) artificial intelligence prediction methods, which have been a hot research topic in recent years, such as the gray prediction model with drilling (Zhang and Gao, 2005; He et al., 2008), artificial neural networks (S et al., 2018; Rashidi and Asadi, 2018; Hadi et al., 2019; Hutomo et al., 2019), support vector machines (Wei et al., 2007). Although these intelligent methods effectively improve the prediction accuracy, they do not integrate with empirical knowledge, which leads to the instability of the prediction results. Moreover, the black-box nature of the internal decision making of the model also makes the results weakly interpretable.
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Sardenberg, Victor, e Mirco Becker. "Aesthetic Measure of Architectural Photography utilizing Computer Vision: Parts-from-Wholes". In Design Computation Input/Output 2022. Design Computation, 2022. http://dx.doi.org/10.47330/dcio.2022.ggnl1577.
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The existing methods for solution space navigation require numerical values to score solutions. The authors introduce a method of quantitative aesthetic evaluation utilizing Computer Vision (CV) as a criterion to navigate solution spaces. Therefore, aesthetics can complement structural, environmental, and other quantitative criteria. The work stands in the extended history of quantifying the visual aesthetic experience. Some precedents are: Birkhoff [1933] and Max Bense [1965] built an approach with experiments to empirically support a measure, whereas Birkin [2010], Ostwald, and Vaughan [2016] devised the first computational methods working on vector drawings. Our research automates and accelerates aesthetic quantification by utilizing CV to extract computable datasets from images. We are especially keen on architectural images as a shorthand to assign an aesthetic value to design, aiming to navigate the solution space in architecture. This work devises a method for rearranging parts in architectural images focusing on formal aspects, in opposition to semantic segmentation where objects unrelated to architectural design (cars, persons, sky…) are quantified to score images [Verma and Jana and Ramamritham 2018]. It uses Maximally Stable Extremal Regions (MSER) [Matas 2004] to recognize architectural parts because it is superior to similar methods such as SimpleBlobDetector in this task. Our method disassembles the parts in a diagram of scaled parts (Fig. 2) to analyze them in isolation, and a diagram of connectivity graph (Fig. 3), to evaluate relationships. These diagrams are examined to compare photos of buildings, cars, and trees to assess the applicability of such a method to a range of objects. Parts and connections are thus quantified, and these values are inputted in a refined version of Birkhoff’s formula to calculate an aesthetic score for each image for navigating the solution space. Finally, it tests the method to draw comparisons between the discrete and continuous paradigms (Fig. 1) in the contemporary discourse of architecture, comparing Zaha Hadid Architects` Heydar Aliyev Centre and Gilles Retsin´s Diamonds House to argue that there is a difference between the aesthetic effects of continuous and discrete designs, besides their distinction in tectonic logic. The method proved to be an efficient procedure for comparatively quantifying the aesthetic judgment of architectural images, enabling designers to incorporate aesthetics as a complementary criterion for solution space navigation in computational design. The method of computational aesthetic measure for solution space navigation and its calibrations via crowdsourced evaluation of images is further detailed in a paper by the authors being published at the 2022 eCAADe conference.