Relevant bibliographies by topics / Compositions

Academic literature on the topic 'Compositions'

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

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Journal articles on the topic "Compositions"

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ANTONENKO, Аrtem, Tetiana , BROVENKO, Myroslav KRYVORUCHKO, Nataliya STUKALSKA, Galina TOLOK, and Oleksii TONKYKH. "SIMULATION OF THE RECIPE COMPOSITION OF HEALTHY FOOD PRODUCTS BASED ON FUNCTIONAL COMPOSITIONS." Herald of Khmelnytskyi National University. Technical sciences 313, no. 5 (October 27, 2022): 243–50. http://dx.doi.org/10.31891/2307-5732-2022-313-5-243-250.

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The article provides justification and development of the methodology for modeling the recipe composition of health food products based on functional compositions. The basis of the modeling is the principle of food combinatorics, which consists in the justified quantitative selection of the main raw materials and food additives, which together ensure the formation of the necessary organoleptic and physicochemical properties, the given level of nutritional (food, biological) and energy value. Modeling of food products is the process of creating a product as a single integrated system consisting of elements that do not individually provide the specified properties. Conceptual approaches to the modeling of functional compositions and products based on them consist in optimizing the selection and ratio of ingredients, by which it is possible to obtain a composition that, in terms of quantitative content and qualitative composition, best meets the indicators of nutritional value and medical and biological requirements. The application of a mathematical apparatus based on the formalization of qualitative and quantitative indicators of the composition, nutritional value of individual ingredients and their combinations in the composition of model functional compositions allows, through simulation modeling, to determine the total content of an individual component. Taking into account the above-mentioned factors, the modeling results, as a rule, provide effective optimization of the product composition and parameters of individual operations of the technological process. Upon completion of the stage of multi-level experimental modeling, the functional compositions and technologies of the products are checked in laboratory and production conditions, after which their final adjustment is made. At the final stage, comprehensive studies of the main indicators of the quality of finished products, calculation of economic indicators, testing of technology in production conditions, preparation, coordination and approval of regulatory documents and organization of industrial implementation are carried out. The application of the design methodology of model functional compositions and food products allows to increase the degree of use of raw materials and expand the assortment of products with a given composition and properties for health purposes.
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KALIAKATSOS-PAPAKOSTAS, MAXIMOS A., MICHAEL G. EPITROPAKIS, ANDREAS FLOROS, and MICHAEL N. VRAHATIS. "CHAOS AND MUSIC: FROM TIME SERIES ANALYSIS TO EVOLUTIONARY COMPOSITION." International Journal of Bifurcation and Chaos 23, no. 11 (November 2013): 1350181. http://dx.doi.org/10.1142/s0218127413501812.

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Music is an amalgam of logic and emotion, order and dissonance, along with many combinations of contradicting notions which allude to deterministic chaos. Therefore, it comes as no surprise that several research works have examined the utilization of dynamical systems for symbolic music composition. The main motivation of the paper at hand is the analysis of the tonal composition potentialities of several discrete dynamical systems, in comparison to genuine human compositions. Therefore, a set of human musical compositions is utilized to provide "compositional guidelines" to several dynamical systems, the parameters of which are properly adjusted through evolutionary computation. This procedure exposes the extent to which a system is capable of composing tonal sequences that resemble human composition. In parallel, a time series analysis on the genuine compositions is performed, which firstly provides an overview of their dynamical characteristics and secondly, allows a comparative analysis with the dynamics of the artificial compositions. The results expose the tonal composition capabilities of the examined iterative maps, providing specific references to the tonal characteristics that they can capture.
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Bell, Brian R., and Ian T. Williamson. "Picritic basalts from the Palaeocene lava field of west-central Skye, Scotland: evidence for parental magma compositions." Mineralogical Magazine 58, no. 392 (September 1994): 347–56. http://dx.doi.org/10.1180/minmag.1994.058.392.01.

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AbstractMineral chemistry and whole-rock compositional data are reported for two lavas of picritic basalt from the Palaeocene lava field of west-central Skye, Scotland. Whole-rock compositions for both flows plot on Thompson's (1982) 9 kbar cotectic for olivine + plagioclase + clinopyroxene + liquid. Both flows contain highly forsteritic olivine phenocrysts (c. Fo89), which enclose early-precipitated crystals of chrome-spinel (Al2O3: c. 25 wt.%; Cr2O3: c. 36 wt.%; FeO + Fe2O3: c. 20 wt.%; MgO: c. 15 wt.%). The olivine compositions indicate equilibrium with picritic basalt magma compositions, as represented by the whole-rock compositions of both lavas. A high-pressure origin for the chrome-spinels is suspected on the basis of their textural association and aluminous composition. Compositional comparisons between the whole-rock and mineral chemistry characteristics of both flows and a picritic basalt chill facies of the temporally- and spatially-associated Rum Igneous Complex suggests that similar parental magmas were involved.
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Ushakov, Glib. "Free compositions in contemporary architecture." Current problems of architecture and urban planning, no. 66 (April 14, 2023): 84–94. http://dx.doi.org/10.32347/2077-3455.2023.66.84-94.

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The article summarizes the features of free compositions based on the experience of modern world architecture, which, together with other methods, bring the scope of possibilities of modern architectural composition beyond traditional principles. It is proposed to divide the architectural compositions according to orderliness into the following classes: ordered composition; free composition; a combination of ordered and free composition. The features of free compositions are considered: complexity, diversity, the absence of a simple and clear regularity of the arrangement of parts. A free composition is perceived as a complex, spatial, diverse collection of parts and surfaces. Peculiarities of perception and awareness of free compositions, which differ from perception and awareness of traditional ordered compositions, are analyzed. Examples of modern buildings created on the basis of free compositions are given. The main trend of modern architecture, where free compositions were introduced, is deconstructivism. However, architects working in other trends and creative approaches also used free compositions. The substantiation of this powerful phenomenon, realized in significant buildings, is based on the creativity of such modern architects as: Günter Behnisch, Frank Gehry, Toyo Ito, Rem Koolhaas, Daniel Libeskind, Eric Owen Moss, Thom Mayne, Wolf Dieter Prix, Zaha Hadid etc. An approximate generalization of methodical approaches to the creation of free compositions is proposed: free compositions based on a combination of various volumes; free compositions based on the combination of various fragments of surfaces; free compositions based on complex surfaces with various sections; physically variable free compositions (transformation of facade systems or parts of the building); illusory and variable free compositions (media facades installed on surfaces or external projection systems, holographic systems); free compositions based on the use of means of alternative materiality (transparent surfaces, mirror surfaces, light forms, forms from streams of water or steam, etc.).
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Blom, Diana. "Engaging Students With A Contemporary Music – Minimalism – through Composing Activities: Teachers’ Approaches, Strategies and Roles." International Journal of Music Education os-40, no. 1 (May 2003): 81–99. http://dx.doi.org/10.1177/025576140304000107.

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A study inviting teachers at primary, secondary and tertiary level to introduce their students to composing activities through a resource album of minimalist projects noted that some teachers led their students to write “pastiche” compositions while others enabled their student composers to move beyond pastiche to an expansion of the given compositional concepts. Results examined compositions of music as imitating the style of an existing work, or whether teachers enabled their students to move beyond pastiche composition to an expansion of the given compositional concepts. This paper discusses the approaches, strategies, and roles adopted by both groups of teachers.
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Jing, Chenchen, Yukun Li, Hao Chen, and Chunhua Shen. "Retrieval-Augmented Primitive Representations for Compositional Zero-Shot Learning." Proceedings of the AAAI Conference on Artificial Intelligence 38, no. 3 (March 24, 2024): 2652–60. http://dx.doi.org/10.1609/aaai.v38i3.28043.

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Compositional zero-shot learning (CZSL) aims to recognize unseen attribute-object compositions by learning from seen compositions. Composing the learned knowledge of seen primitives, i.e., attributes or objects, into novel compositions is critical for CZSL. In this work, we propose to explicitly retrieve knowledge of seen primitives for compositional zero-shot learning. We present a retrieval-augmented method, which augments standard multi-path classification methods with two retrieval modules. Specifically, we construct two databases storing the attribute and object representations of training images, respectively. For an input training/testing image, we use two retrieval modules to retrieve representations of training images with the same attribute and object, respectively. The primitive representations of the input image are augmented by using the retrieved representations, for composition recognition. By referencing semantically similar images, the proposed method is capable of recalling knowledge of seen primitives for compositional generalization. Experiments on three widely-used datasets show the effectiveness of the proposed method.
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Asplund, Jonas. "Compositionism and digital music composition education." Journal for Research in Arts and Sports Education 6, no. 3 (August 30, 2022): 96–120. http://dx.doi.org/10.23865/jased.v6.3578.

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This article aims to explore the sociomaterial relational activities within digital music composition education via the posthumanist concepts compositionism and assemblage. The study is an attempt at a nonlinear and non-reductivist understanding of educational activities where matter, nature, and culture shape performative practices. Engaging with Latour and Actor-Network Theory (ANT) and its onto-epistemological manifest as compositionism, the explorations also find impetus from posthumanist thinking, Barad’s intra-action, Haraway’s becoming-with, and post-qualitative inquiry. Four Year 9 classes in a Swedish compulsory school took part in the composing activity and the research intervention. During a four-week participation period, the music composition lessons were video-recorded. Sociomaterial transcriptions of the recorded lessons were transformed into assemblage compositions to explore the outcomes and becomings that emerged. What these sociomaterial compositions brings to the fore is the hybridity of digital music composition outcomes in learning activities.
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Ismailova, Jamilyam, Dinara Delikesheva, Aibek Abdukarimov, Nargiz Zhumanbetova, and Adel Sarsenova. "Development and application of fluid characterization algorithms to obtain an accurate description of a PVT model for Kazakhstani oil." Eastern-European Journal of Enterprise Technologies 5, no. 6 (125) (October 31, 2023): 6–20. http://dx.doi.org/10.15587/1729-4061.2023.289932.

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Compositional reservoir modeling often requires a large number of instantaneous calculations. To reduce the dimension of the problem and the amount of computation, several components are usually grouped into pseudo-components. However, to model surface processes, it is important to have a detailed phase composition. Accurate fluid composition requires laboratory analysis, which is costly and time-consuming. This study addresses this issue by introducing an advanced delumping procedure aimed at providing an accurate fluid characterization. The primary objective was to develop a sophisticated delumping procedure capable of precisely describing detailed fluid compositions from calculations involving mixtures. Its goal is to reduce reliance on laboratory analysis, making the process more efficient. The results obtained from this research can improve the planning and modeling of surface facilities, developed under conditions of reservoir pressure above saturation pressure. To test the effectiveness of the proposed delumping and achieve the goals set, experiments were carried out on compositional simulation of oil production in the Caspian basin. The procedure uses reduction parameters calculated from simulation data and an analytical approach to characterize fluid compositions from the original data. Detailed fluid compositions obtained through laboratory PVT analysis were then compared with the results of simulation using PVTsim software and numerical delumping procedures. The findings showed a close agreement between the outcomes of detailed compositions obtained through the delumping procedure and of laboratory analysis, with an average deviation less than 5 %, confirming the effectiveness of delumping as an alternative method for obtaining an accurate fluid composition
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Miryuk, O. A. "Influence of Fillers on Silicate Compositions Porization." Key Engineering Materials 887 (May 2021): 521–27. http://dx.doi.org/10.4028/www.scientific.net/kem.887.521.

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The article is devoted to the problem of raw material base expanding and improving construction and technical properties of porous granular materials. The results of experimental studies of silicate compositions based on liquid glass and technogenic fillers containing burnable or gas-forming components are presented. Influence of molding mixtures’ composition on thermal expansion nature of granular compositions was established. Preference of a filler combined, containing glass cullet, silica clay and mineral additives was revealed. Multicomponent composition of a filler helps to intensify composition’s expansion. Electron microscopy studies of porous silicate granules have confirmed the advantages of combined fillers using. Effectiveness of sodium additive introduction to regulate technological properties of the raw material and the process of pores formation has been proven. Expediency of mechanical activation of a raw mixture to reduce the temperature of expansion and obtain granules with a bulk density of not more than 300 kg/m3 has been determined.
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Ma, Y. Z. "Three-Dimensional Modeling of Mineral/Elemental Compositions for Shale Reservoirs." SPE Journal 25, no. 04 (May 20, 2020): 2067–78. http://dx.doi.org/10.2118/201118-pa.

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Summary Mineral compositional analysis of rocks is important for developing shale resources because the relationships between mineral compositions and petrophysical properties are critical for resource evaluation and completion optimization. Elementary properties are now routinely analyzed at wells in evaluating shale reservoirs. However, these properties have not been modeled in the three-dimensional (3D) reservoir. This is because an elemental composition has a physical constraint that is relatively easily adhered to in data analysis for wells but not in 3D modeling of reservoirs. A critical condition of elemental composition is that the sum of its components is equal to 100% to honor the mass-preservation principle. Traditional modeling methods do not satisfy this physical condition, sometimes producing nonphysical values, such as negative porosity values and fluid-saturation values greater than 100%. To date, only the compositional-modeling methods using a log-ratio transform can consistently satisfy this physical constraint. This paper presents modeling methods using additive log-ratio transform for modeling mineral compositions.
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Dissertations / Theses on the topic "Compositions"

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Mulvey, Grainne. "Composition portfolio : ten compositions and commentaries." Thesis, University of York, 1998. http://etheses.whiterose.ac.uk/10860/.

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Todd, Benedict Francis de Pomeroy. "Portfolio of compositions and composition commentary." Thesis, University of Bristol, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.730838.

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Minor, Laura. "Unsound compositions women and compositional agency /." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0010587.

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Beiert, Michael. "Portfolio of compositions, with accompanying composition commentary." Thesis, University of Liverpool, 2015. http://livrepository.liverpool.ac.uk/2042979/.

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The following chapters describe compositional methods applied to the compositions of the portfolio (Volume I), which consists of eight works for instruments and electronic sound, as well as one purely electronic piece. The main concern in all these works is aspects of open form and, to a lesser extent, indeterminacy during performance. I highlight the research I have undertaken in preparation for each of the compositions, show how all of these pieces are progressively linked by my evolving interest in open form, and place them in context with works by other composers, past and present, who have employed similar, or different, experimental procedures. Volume II, the composition commentary, includes a technical appendix, explaining the different software processes for the individual works, and a recourses appendix containing recordings of all of the nine compositions, as well as all of the Max patches, Max for Live devices and sound files I have programmed and created for the electronic parts of the pieces.
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Chen, Ya-Chun. "Compositions." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/393.

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The thesis for the Master of Music degree in Composition consists of live performances of original works composed during graduate study. The student is expected to have written and performed approximately forty-five minutes of music for various media. My compositions were performed on January 27 (Autumn Fantasia) and February 20 (Five Elements) of 2006, and March 12 (Bounce!), 30 (The Little Fairy), April 3 (String Quartet No.1), August 15(Ballads of Four Seasons) and November 19 (Three Pieces for Solo Violin) of 2007. Briefly, each work was written in different compositional approach such as the timbres, specific colours, textures, themes and rhythmic practices. Autumn Fantasia and The Little Fairy explore the transformations and developments of thematic material. Bounce! is a piece in the procedure of tempo modulations and polyrhythmic practices. The textural experiment is the "source" for String Quartet No. 1.In both Ballads of Four Seasons and Five Elements, I employed the oriental tone color (pentatonic scales)in one particular line combining with western-based (chromaticism) sonority and sounding in other parts. Finally, to accumulate every compositional skills and techniques, Three Pieces for Solo Violin is a work binding each practices altogether.
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Wilson, Benjamin Franklin. "Compositions." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31605.

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The thesis for the Master of Music degree in Composition consists of live performances of original works composed during graduate study. The student is expected to have written and have performed approximately an hour of music for various media. My compositions were performed on. March 21, 2005, June 2, 2005, August 1, 2005, October 1, 2005, October 3, 2005, June 9, 2006, June 17, 2006, June 25, 2006, January 15, 2007, March 5, 2007, February 17, 2007 and March 30, 2007.
Arts, Faculty of
Music, School of
Graduate
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Harty, Heather Jean. "Compositions." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31790.

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The thesis for the Master of Music degree in Composition consists of live performances of original works composed during graduate study. I have written approximately an hour of music for various media. Included in this submission are the following works: The Fir Woods (SATB choir), Night Cycles (chamber ensemble), Days (chamber ensemble), Stick, Stock, Stone (SSA choir), Air Ameva (concert band), and Stanzas from 'The Prince's Progress' (song cycle). While some of these works have had multiple performances, the most significant performance date for each piece is, respectively: April 16, 2005, April 4, 2005, January 30, 2007, February 19, 2007, June 29, 2007, and November 19, 2007.
Arts, Faculty of
Music, School of
Graduate
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Macura, Nebojsa Slobodan. "Compositions." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31971.

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The thesis for the Master of Music degree in Composition consists of live performances of original works composed during graduate study. The student is expected to have written and have performed approximately an hour of music for various media. My compositions were performed on March 3, 2006; March 18, 2006; April 13, 2006; November 9, 2006; January 7, 2007; January 26, 2007; March 12, 2007; March 17, 2007; March 31, 2007; and April 19, 2007.
Arts, Faculty of
Music, School of
Graduate
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Roark, Timothy Benton. "Compositions." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/32279.

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The thesis for the Master of Music degree in Composition consists of live performances of original works composed during graduate study. The student is expected to have written and have performed approximately an hour of music for various media. My compositions were performed on: A Set of Various Future Times ("'... but not all'") as Foretold by Tsui Pen's Garden of Forking Paths, performed by the Bozzini String Quartet on April 28th, 2007 for the Composer's Kitchen Workshop (9.29) The Arcturus Agora, read by the Vancouver Symphony Orchestra on April 19th, 2007 (6.32) Orfeo Beyond Thunderdome !, performed by the Ad Mare Quintet for the Music in the Schools Outreach Program in a series of concerts in April, 2007 (2.50) 'Crazy Jane and the Bishop', performed on April 3rd, 2007 by Margo Levae, Mike Broder, Mark McGregor, Nicholas Jacques, Joy Yeh, and Grace Harvey and directed by Francine Dulong in the UBC Recital Hall, Vancouver, BC (9.20) The Arcturus Agora, read by the Victoria Symphony Orchestra on February 2nd, 2007 (6.04) Le Portail d'Asni, performed on January 26th, 2007 by the UBC Contemporary Players in the UBC Recital Hall (8.10) On Nights Like Tonight..., performed September 10th, 2006 by the Aventa Ensemble in the Philip T. Young Recital Hall, Victoria, BC (5.32) Il Pleut, Il Pleut Bergere: Variations on a Folk Melody, performed on April 8th, 2006 by Mark McGregor, Jessica Raposo, Jennifer Butler, and Sara Kalke in the UBC Recital Hall, Vancouver, BC (7.44) Sketches for Three Pianos After Paintings by G. Richter, performed on March 20th, 2006 by Jesse Popov, Aleks Szram, and Brad Stark in the UBC Recital Hall, Vancouver, BC (9.09)
Arts, Faculty of
Music, School of
Graduate
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Samandari, Farshid. "Compositions." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/32340.

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The thesis for the Master of Music degree in Composition consists of live performances of original works composed during graduate study. The student is expected to have written and have performed approximately an hour of music for various media. My compositions were performed on: Apogee on November 10, 2005, by Mark McGregor in Recital Hall. Prelude to Certitude on April 3, 2006, by VSO in Orpheum. Of Life and Love on March 18, 2006 by Turning Point Ensemble in Western Front. Asheghaneh on September 30, 2006 by VICO IN Chan Center. Beyond on March 31 2007 by Morgan Zentner in Recital Hall. This compilation, despite the variety of medium, clearly represents my interest in contemporary classical vocabulary, spectral analysis, and extended techniques, as well as the precious universal heritage of ethnic music. Shapes and forms of these pieces though representative of contemporary composition, has aesthetic roots in various ethnic arts, especially in their frequent use of non-western ratios. The pitch material despite its occasional resemblance to existing traditional music is derived from synthetic modes, which combines a number of divergent elements including Indian raga, Persian gushe and Varesian techniques. I have adapted a harmonic language, which is derived from spectral analysis of few Persian instruments, including Tar and Santur. This bimodal harmonic language is often ornated with a modal counterpoint, which has its roots in different ethnic modes. In other words, not only the structure and plan but also the content of these pieces conveys intercultural elements.
Arts, Faculty of
Music, School of
Graduate
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Books on the topic "Compositions"

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Museu d'Art Contemporani (Barcelona, Spain), ed. Compositions. Barcelona: MACBA, 2019.

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Harrison, James Patrick. Portfolio of compositions (for MMus in composition). Birmingham: Universityof Birmingham, 1994.

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Liffen, David Alan. Portfolio of compositions (for MMus in composition). Birmingham: University of Birmingham, 1994.

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1866-1944, Kandinsky Wassily, Museum of Modern Art (New York, N.Y.), and Los Angeles County Museum of Art., eds. Kandinsky compositions. New York: Museum of Modern Art, 1995.

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Archer-Hind, Richard Dacre, and Robert Drew Hicks, eds. Cambridge Compositions. Cambridge: Cambridge University Press, 2009. http://dx.doi.org/10.1017/cbo9780511693465.

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Bariolla, Ottavio. Keyboard compositions. [S.l.]: American Institute of Musicology, 1986.

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Holloway, Charlene Hampton. Whitlock's compositions. [Louisville, Ky: Char and Cher's 5Grands Enterprises, 2004.

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Creating compositions. 6th ed. New York: McGraw-Hill, 1991.

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Wiener, Harvey S. Creating compositions. 5th ed. New York: McGraw-Hill, 1987.

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Fellmann, Ellen, Charlie Bendisch, Cornelia Horsch, and Almut Röhrborn. Extended compositions. Biel: Pasquart Kunsthaus Centre d'art, 2017.

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Book chapters on the topic "Compositions"

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Arndt, Jörg. "Compositions." In Matters Computational, 194–201. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14764-7_7.

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Mazzola, Guerino. "Global Compositions." In The Topos of Music, 299–332. Basel: Birkhäuser Basel, 2002. http://dx.doi.org/10.1007/978-3-0348-8141-8_13.

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Mazzola, Guerino. "Local Compositions." In The Topos of Music, 105–33. Basel: Birkhäuser Basel, 2002. http://dx.doi.org/10.1007/978-3-0348-8141-8_7.

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Matoušek, Jiří. "Counting compositions." In The Student Mathematical Library, 119–23. Providence, Rhode Island: American Mathematical Society, 2010. http://dx.doi.org/10.1090/stml/053/26.

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Im, Sung Hyun. "Shampoo compositions." In Human Health Handbooks no. 1, 434–47. Wageningen: Wageningen Academic Publishers, 2012. http://dx.doi.org/10.3920/978-90-8686-728-8_22.

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Mazzola, Guerino. "Global Compositions." In The Topos of Music I: Theory, 245–71. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-64364-9_13.

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Mazzola, Guerino. "Local Compositions." In The Topos of Music I: Theory, 89–112. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-64364-9_7.

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vom Lehn, Dirk. "Assembling compositions." In The Practical Accomplishment of Everyday Activities Without Sight, 180–98. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003156819-9.

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Bose, Ajoy K. "Incendiary Compositions." In Military Pyrotechnics, 297–305. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003093404-15.

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Bose, Ajoy K. "Gunpowder Compositions." In Military Pyrotechnics, 361–70. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003093404-21.

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Conference papers on the topic "Compositions"

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Mawlod, Arwa, Afzal Memon, Nikolaos Varotsis, Vassilis Gaganis, Vicky Anastasiadou, John Nighswander, and Muataz Salem Al Shuaibi. "Reducing Composition Characterization Uncertainties Through Advanced Machine Learning (ML) Techniques - Data Clustering." In ADIPEC. SPE, 2022. http://dx.doi.org/10.2118/211378-ms.

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Abstract Objectives/Scope Round-robin tests and laboratory audits have demonstrated that reservoir fluid compositions measurements can be systematically uncertain. To reduce compositional uncertainties, this work uses Machine Learning (ML) algorithms to update the existing measured fluid compositions and applies a compositional adjustment anchored on a decreased number of selected fluids representative of the entire compositional space. The resulting composition will reduce uncertainty in exploration and production models and diminish the risks in field development decisions. Methods, Procedures, Process Statistical error propagation analysis of reservoir fluid compositional measurements were completed to identify the parameters that most affect the overall uncertainty of the compositional analysis data. Advanced ML techniques were then used to perform clustering analysis of 800+ unique fluid compositions from legacy PVT reports. Dimensionality reduction exercise and data clustering utilizing the k-means algorithm were employed to identify parameters that best characterize the reservoir fluid properties to be corrected. The sampling candidate wells were identified to obtain new samples for the selected anchor points fluids that will be subjected to detailed fluids characterization. Results, Observations, Conclusions Systematic error propagation analysis demonstrated that, of the 140 independent parameters measured to determine a reservoir fluid composition (to C30+), the plus fraction concentration and molecular weight measurements uncertainties contributed the most towards the overall composition uncertainty for most black oil fluids. After extraction and collation of available reservoir fluid analysis data, a detailed review was completed to eliminate samples with significant mud filtrate contamination, obvious light end weathering and/or other inconsistencies. Once the dataset was validated, the dimensionality reduction task led to 5 principal dimensions space out of 57 initial possible features. The reduced dimension set included two distinct Cn- molar distribution slopes that best correlated the compositions data. Data clustering analysis was performed to identify the cluster centroids in the reduced dimension space. Wells with the closest compositions to cluster centroids were selected for sampling based on this work and the suitability of target wells for sampling. Further, extensive fluid compositions analysis with physical separation processes will be undertaken on the 50 selected anchor point fluids. Novel/Additive Information An original combination of reservoir fluids domain knowledge and advanced ML techniques have been applied to identify candidate wells to sample with the goal to significantly reduce the uncertainty in measured reservoir fluid composition. This unique workflow for composition corrections will help reduce the uncertainty in the critical techno-economic decisions that depend on fluids characterization data in the oil and gas field development domain.
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Carlsen, Mathias Lia, Mohamad Majzoub Dahouk, Stian Mydland, and Curtis Hays Whitson. "Compositional Tracking: Predicting Wellstream Compositions in Tight Unconventionals." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2020. http://dx.doi.org/10.2523/iptc-19596-ms.

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Whitson, Curtis Hays, Bilal Younus, and Markus Hays Nielsen. "Separator Sample Analysis and Calculating Wellstream Composition." In Asia Pacific Unconventional Resources Symposium. SPE, 2023. http://dx.doi.org/10.2118/217328-ms.

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Abstract This paper discusses the use of separator gas and separator oil samples as the primary method used in tight unconventional wells. Separator samples provide direct measurement of surface product compositions and properties, but they are primarily used in the calculation of wellstream composition. Our discussion encompasses a comprehensive and quantitative QC and correction of separator sample compositions, also providing improved accuracy in the estimation of wellstream composition, both for conventional and tight unconventional wells. The standard QC of separator sample compositions assumes that the samples collected should represent equilibrium gas and oil phases at conditions of pressure and temperature in the separator at the time of sampling. The Hoffman-Crump-Hocott method plots the log of component K-value and separator pressure log(Kpsp) versus a component factor F. The Hoffman "KpF" plot should result in a linear trend, with deviations from the linear trend indicating that the sampled phases are not in equilibrium. The problem with this QC method is that it does not provide a method to correct erroneous separator sample compositions. Our paper presents such a correction method for separator gas, separator oil, and wellstream compositions. The proposed method uses the lab-reported wellstream composition based on the sampled gas and oil separator compositions using a recombination ratio computed from the separator gas-oil ratio at the time of sampling, and separator oil molar volume. This wellstream composition is flashed with K-values applicable at separator temperature and pressure, e.g. from the Standing correlation using a Rachford-Rice phase split calculation, or doing a flash with an appropriate equation of state. The resulting flash calculation provides corrected separator gas and separator oil compositions that are more accurate than lab-reported separator gas and oil compositions, and can be used to calculate a corrected wellstream composition using the lab-reported recombination ratio. We have studied the utility of this method for a wide range of wellstream mixtures, separator conditions, and the four potential sources of errors in separator samples: (1) leakage during transportation to the laboratory, (2) samples being collected at different times when pressure-temperature conditions differ for the gas and oil samples, (3) liquid carryover in the separator gas and gas carryover in the separator oil, and (4) gas chromatography errors in laboratory compositional measurements. We show that the proposed method of correcting separator gas, separator oil, and wellstream compositions are accurate for all fluid types and errors that may be found in separator sampling. The approach is consistent with, but not dependent on, the Hoffman KpF method. The method does require K-value estimates at separator conditions, but this is almost always available from the Standing correlation (often used in connection with the Hoffman KpF QC plot) or an available EOS model.
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Verges, Melody A., Paul J. Schilling, Jeffrey D. Germond, Puja Upadyhay, William K. Miller, Pramathesh Maji, Nathan J. Takas, and Pierre F. P. Poudeu. "Young’s Modulus and Hardness of Zr0.5Hf0.5CoxRh1−xSb0.99Sn0.01 and Zr0.5Hf0.5CoxIr1−xSb0.99Sn0.01 Half-Heusler Alloys." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38988.

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Mechanical testing was performed to determine the influence of compositional changes on the Young’s modulus and hardness of half-Heusler compounds of the base composition Zr0.5Hf0.5CoSb0.99Sn0.01. In the efforts to decrease the thermal conductivity of the composition toward the development of thermoelectric materials with high thermal conversion efficiencies, specimens were fabricated with varying amounts of rhodium and iridium at the cobalt site. In addition to the general Zr0.5Hf0.5CoSb0.99Sn0.01 composition, six hot-pressed samples of the Zr0.5Hf0.5CoxRh1−xSb0.99Sn0.01 (0.0≤x≤1.0) composition and four hot-pressed samples of the Zr0.5Hf0.5CoxIr1−xSb0.99Sn0.01 (0.0≤x≤0.7) composition were synthesized. Indentation measurements were obtained using both microhardness testing and depth-sensing nanoindentation. The general Zr0.5Hf0.5CoSb0.99Sn0.01 composition was observed to have a hardness and elastic modulus around 896HV0.2 and 247GPa, respectively. For all of the compositions tested the hardness range was observed to lie between 347HV0.2 and 951HV0.2. The elastic moduli for these compositions were found to range between 97GPa and 247GPa. The effects of the rhodium substitution and iridium substitution at the cobalt site on the elastic stiffness and hardness are examined.
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Higgins, W. M., E. Van Loef, J. Glodo, A. Churilov, and K. S. Shah. "New scintillator compositions." In Optical Engineering + Applications, edited by F. Patrick Doty, H. Bradford Barber, and Hans Roehrig. SPIE, 2007. http://dx.doi.org/10.1117/12.740834.

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Sbai, Othman, Camille Couprie, and Mathieu Aubry. "Surprising image compositions." In 2021 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW). IEEE, 2021. http://dx.doi.org/10.1109/cvprw53098.2021.00438.

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Haase, Felix, Maximilian Klein, Andreas Tarnowsky, and Franz-Erich Wolter. "Interactive fractal compositions." In the 11th ACM SIGGRAPH International Conference. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2407516.2407563.

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Oliveira, Vinicius César, and José Henrique Padovani. "Mapping, Triggering, Scoring, and Procedural Paradigms of Machine Listening Application in Live-Electronics Compositions." In Simpósio Brasileiro de Computação Musical. Sociedade Brasileira de Computação - SBC, 2021. http://dx.doi.org/10.5753/sbcm.2021.19445.

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Since the advent of real-time computer music environments, composers have increasingly incorporated DSP analysis, synthesis, and processing algorithms in their creative practices. Those processes became part of interactive systems that use real-time computational tools in musical compositions that explore diverse techniques to generate, spatialize, and process instrumental/vocal sounds. Parallel to the development of these tools and the expansion of DSP methods, new techniques focused on sound/musical information extraction became part of the tools available for music composition. In this context, this article discusses the creative use of Machine Listening and Musical Information Retrieval techniques applied in the composition of live-electronics works. By pointing out some practical applications and creative approaches, we aim to circumscribe, in a general way, the strategies for employing Machine Listening and Music Information Retrieval techniques observed in a set of live-electronics pieces, categorizing four compositional approaches: namely, mapping, triggering, scoring, and procedural paradigms of application of machine listening techniques in the context of live-electronics music compositions.
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Zech, Rebecca, Andrea Giuliani, and Max W. Schmidt. "New constraints on kimberlite melt compositions using bulk and groundmass compositions." In Goldschmidt2023. France: European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.18147.

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Baresi, L., E. Di Nitto, S. Guinea, and S. Dustdar. "Multi-dimensional service compositions." In 2009 31st International Conference on Software Engineering - Companion Volume. IEEE, 2009. http://dx.doi.org/10.1109/icse-companion.2009.5071012.

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Reports on the topic "Compositions"

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Hester, J. R. Radiolytic Bubble Gas Hydrogen Compositions. Office of Scientific and Technical Information (OSTI), August 2001. http://dx.doi.org/10.2172/785470.

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Hester, J. R. Radiolytic Bubble Gas Hydrogen Compositions. Office of Scientific and Technical Information (OSTI), February 2003. http://dx.doi.org/10.2172/807671.

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Gupta, P. K. Stable Compositions for Fluoride Glasses. Fort Belvoir, VA: Defense Technical Information Center, April 1988. http://dx.doi.org/10.21236/ada196021.

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Jaasma, D. R., D. C. Osucha, and J. Scheuren. Preparation of biliquid foam compositions. Office of Scientific and Technical Information (OSTI), December 1990. http://dx.doi.org/10.2172/5884018.

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Drolet, J. P. Automatic Loading of Priming Compositions. Fort Belvoir, VA: Defense Technical Information Center, August 2001. http://dx.doi.org/10.21236/ada385935.

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Mueller, H., and L. M. Perle. Long lifetime silicate laser glass compositions. Office of Scientific and Technical Information (OSTI), August 1985. http://dx.doi.org/10.2172/6730599.

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Seidman, D. N., and K. L. Merkle. Atomic structures and compositions of interfaces. Office of Scientific and Technical Information (OSTI), September 1990. http://dx.doi.org/10.2172/5006479.

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Kohut, Peter, and David Diamond. Increasing Compositions in NBSR Neutronics Model. Office of Scientific and Technical Information (OSTI), January 2019. http://dx.doi.org/10.2172/1497373.

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Rigali, Mark, Eric Lindgren, Mark Phillips, Patrick Burton, and Eduardo Basurto. Accelerated Testing of Selected Filler Compositions. Office of Scientific and Technical Information (OSTI), September 2019. http://dx.doi.org/10.2172/1647436.

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Nunn, S. D., J. O. Jr Kiggans, R. E. II Simpson, and J. P. Maria. Gelcasting of silicon compositions for SRBSN. Office of Scientific and Technical Information (OSTI), December 1995. http://dx.doi.org/10.2172/179264.

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