scholarly journals Computing Evolutionary Chains in Musical Sequences

10.37236/1604 ◽  
2000 ◽  
Vol 8 (2) ◽  
Author(s):  
Maxime Crochemore ◽  
Costas S. Iliopoulos ◽  
Yoan J. Pinzon
Keyword(s):  
Music Analysis ◽  
Efficient Algorithms ◽  
The Body ◽  
Considerable Importance ◽  
Musical Work ◽  
Identical Form ◽  
Musical Patterns ◽  
A Chain ◽  
Chain Problem

Musical patterns that recur in approximate, rather than identical, form within the body of a musical work are considered to be of considerable importance in music analysis. Here we consider the "evolutionary chain problem": this is the problem of computing a chain of all "motif" recurrences, each of which is a transformation of ("similar" to) the original motif, but each of which may be progressively further from the original. Here we consider several variants of the evolutionary chain problem and we present efficient algorithms and implementations for solving them.

Residual Deformation of a Hard-Coated Valve Seat Subjected to Thermal Shocks

2010 ◽  
Author(s):  
Jean-Philippe Mathieu ◽  
Jean-Franc¸ois Rit ◽  
Je`roˆme Ferrari ◽  
David Hersant
Keyword(s):  
Welding Process ◽  
Residual Deformation ◽  
The Body ◽  
Dominant Effect ◽  
Welding Temperature ◽  
Physical Test ◽  
Physical Testing ◽  
A Chain ◽  
Globe Valve ◽  
Thermal Shocks

Most safety related valves in EDF’s nuclear plant must prove their ability to sustain thermal shocks of approximately 240K amplitude. This paper evaluates the simulation of a globe valve tested for thermal shocks. Since the physical test campaign showed inadequate internal sealing, the simulation focuses on the residual deformation of the hard alloy, planar seat, welded on successive body designs. This deformation is the result of the thermal loadings first induced by the welding process, then by fluid flow inside the valve. A chain of 3D simulations successively computes: a welding temperature transient in the body, the resulting strain hardening — especially in the seat vicinity —; temperature transients in the flow and the valve parts, and the resulting strains in the body causing a bump deformation of the seat surface. This end result agrees with measurements on the tested valve specimen. We show that inaccurate results are obtained on simpler assumptions, such as no welding, and we give insights on the dominant effect of the first hot, cold, hot transient over other profiles. Finally, the agreement we obtain on deformation predictions is toned down by an unsatisfactory sealing prediction, as well as the complexity and duration of the simulation chain compared with physical testing.

Music Material Development Techniques (Lectures in «Principles of Music Analysis») 

2020 ◽  
pp. 53-69
Author(s):  
Р.Х. Лаул
Keyword(s):  
Final Section ◽  
High Efficiency ◽  
Music Analysis ◽  
Detailed Examination ◽  
Musical Composition ◽  
Musical Form ◽  
Musical Work ◽  
Saint Petersburg ◽  
Material Development ◽  
Development Processes

Настоящий материал продолжает серию публикаций лекций Рейна Лаула по анализу музыки в Санкт-Петербургской (Ленинградской) консерватории. Шестая лекция завершает обзор приемов разработочного развития музыкального материала. В нее вошли шесть из двадцати пяти приемов в авторской классификации (эпизодическая тема, производная тема, варьирование, полифонические варианты, приемы подвижного контрапункта, полифонические структуры), способствующей систематизации разработочных процессов. В поле зрения автора включены неспецифически сонатные способы преобразования музыкального материала, благодаря чему сонатность предстает в гибком и взаимодополняющем взаимодействии с иными принципами формообразования. Особое внимание уделено специфике применения полифонических средств развития музыкального материала в контексте сонатного формообразования. В ходе детального рассмотрения финала симфонии В. А. Моцарта Юпитер оказываются тесно связанными технологический, композиционно-драматургический и стилевой аспекты становления музыкальной формы. Заключительный раздел, обобщающий содержание лекции в целом, содержит пример практического применения предлагаемой автором методологии. Тем самым доказывается ее целесообразность и высокая эффективность как в аспекте анализа интонационной драматургии музыкального произведения, так и в достижении главной аналитической цели в формировании объективного представления о содержательной сути каждого этапа в развёртывании музыкальной композиции. This material continues the series of publications of R. H. Lauls lectures on music analysis at the Leningrad (Saint Petersburg) Rimsky-Korsakov State Conservatory. The sixth lecture concludes the review of techniques for developing musical material. It discusses six of the twenty-five techniques in the authors classification (episodic theme, derived theme, variation, polyphonic variants, mobile counterpoint techniques, polyphonic structures), which contributes to systematization of the development processes. The authors field of view includes non-specific Sonata methods of transforming the musical material, so that sonateness appears in a flexible and complementary interaction with other principles of formation. Special attention is paid to the specifics of using polyphonic means of developing musical material in the context of Sonata formation. The detailed examination of the finale of Mozarts Symphony Jupiter, shows that technological, compositional, dramatic, and stylistic aspects of the formation of a musical form appear to be closely related. The final section summarizing the content of the lecture as a whole contains an example of practical application of the methodology proposed by the author, proving its expediency and high efficiency not only in the aspect of analyzing the intonation drama of a musical work, but also of achieving the main analytical goal to form a reasoned judgment about the content of each stage in the deployment of a musical composition.

ASSOCIATIVITY AS A FORMATION SOURCE OF A MUSICAL COMPOSITION EDITING FORM OF THE SECOND HALF OF THE 20TH CENTURY

2021 ◽  
pp. 22-31
Author(s):  
ZARINA DENISOVA
Keyword(s):  
Characteristic Feature ◽  
20Th Century ◽  
Musical Composition ◽  
Musical Work ◽  
The Status ◽  
Associative Connection ◽  
New Type ◽  
General Scientific ◽  
A Chain ◽  
Russian Composers

The object of the research in this article is associativity as a characteristic feature of 20th century art. The nature, the role of the association in the work of artistic thinking, the principles of its functioning are considered. The subject of the research is the editing form of a musical work of the second half of the 20th century. Particular attention in the article is paid to the consideration of such an important factor influencing the formation of a stable associative connection as repetition. At the same time, it is specified that repetition is caused by a specific life situation. This repetition forms a chain of associations that create an integral content space of a musical work. The work uses general scientific research methods in the framework of comparative and logical analysis, including generalizations and comparisons. The work is based on the analytical method and has a systemic interdisciplinary nature as well. In revealing the specifics of the installation form, the author of the article turns to the theory of compositional ellipsis V. Bobrovsky. The main conclusion of the study is that the importance of associativity in the work of Russian composers in the second half of the 20th century is increasing, reaching the status of a characteristic feature of artistic thinking. The process of expanding associativity manifested itself, in particular, in the emergence in musical creativity of a new type of form creation - editing. The analysis revealed the features inherent in the montage type of construction of a work of art. This is the dismemberment of thematic material, the syntactic isolation of thematic structures, the organization of the form «from the end», the internal unity of the mosaic structure, and others. The novelty of this research lies in the fact that for the first time associativity is considered as a source of montage shaping, in the choice of research methodology, as well as in the identification of special features of the composition, manifested in the conditions of montage drama.

scholarly journals Ways of Knowing the Body, Bodily Ways of Knowing

2016 ◽  
Vol 22 (2) ◽  
Author(s):  
Peter Martens
Keyword(s):  
Case Studies ◽  
Music Theory ◽  
Music Cognition ◽  
Ways Of Knowing ◽  
Music Analysis ◽  
The Body ◽  
Musical Score ◽  
Research Methodologies

The central role of the body in producing music is hardly debatable. Likewise, the body has always played at least an implicit role in music theory, but has only been raised as a factor in music analysis relatively recently. In this essay I present a brief update of the body in music analysis via case studies, situated in the disciplines of music theory and music cognition, broadly construed. This current trajectory is part of a broader shift away from the musical score as the sole focus for analysis, which admittedly—though, in my view, delightfully—raises a host of challenging epistemological questions surrounding the interaction of performer (production) and listener (perception). While the concomitant research methodologies and technologies may be unfamiliar to scholars trained in humanities disciplines, I advocate for a full embrace of these approaches, either by individual researchers or in the form of cross-disciplinary collaboration.

scholarly journals THE INFLUENCE OF METISEVIT AND METIFEN ON THE INTENSITY OF LIPID PER OXIDATION IN THE BLOOD OF BULLS ON NITRATE LOAD

2016 ◽  
Vol 18 (3(70)) ◽  
pp. 67-71 ◽  
Author(s):  
B.V. Gutyj ◽  
D.F. Hufriy ◽  
V.M. Hunchak ◽  
I.I. Khariv ◽  
N.D. Levkivska ◽  
...  
Keyword(s):  
The Body ◽  
Oxidation Products ◽  
Depressing Effect ◽  
Chain Reaction ◽  
Diene Conjugates ◽  
Inactive Compound ◽  
Nitrite Toxicity ◽  
Nitrate Load ◽  
Young Cattle ◽  
A Chain

The level of primary and secondary lipid per oxidation products were investigated: diene conjugates and malondialdehyde in conditions of nitrate loading. It was established that at bulls feeding with sodium nitrite at a dose of 0.2 hNO3ˉ/kg of body weight, the level of diene conjugates and malondialdehyde in their was increased during the entire the experiment. On the 30thday of the experiment the level of diene conjugates in blood of bull, which were conducted with nitrate load was 7.44 ± 0.15 mmol/l, and the level of malondialdehyde – 0.305 ± 0.014 mmol/l.Under conditions of nitrate load , young cattle was used a new integrated drug «Metisevit», which consists of sodium selenite, vitamin E and metifen. It was found the stimulating effect of metifen and metisevit on antioxidant system of the body of young cattle. Depressing effect of metifen and metisevit on the processes and lipid per oxidation in the blood of bulls under conditions of chronic nitrate–nitrite toxicity. Metifen and metisevit interact with radicals of fatty acids and delay the development of a chain reaction of oxidative stress, reduce the oxidation of phospholipids and form a biologically inactive compound with products of per oxidation of fats. Obtained results of the research indicate antioxidant drugs «Metisevit» and «Metifen» in the application of their young cattle.The mentioned changes are occurring through the comprehensive action of the drug components «Medisvit», that leads to the normalization of metabolic processes and free radical in the body of bulls. Obtained results of the research indicate the antioxidant action of the drugs «Metisevit» and «Metifen» in the application of their young cattle and the reasonableness of their administration to improve the antioxidant status of the organism according to nitrate loading.

scholarly journals Endoscopic removal of metal foreign bodies by magnet: case report

2020 ◽  
Vol 10 (4) ◽  
pp. 467-472
Author(s):  
Vladimir I. Petlakh ◽  
Vladimir A. Borovitsky ◽  
Alexander K. Konovalov ◽  
Natalya N. Strogova
Keyword(s):  
Case Report ◽  
Conservative Therapy ◽  
Foreign Bodies ◽  
Intestinal Wall ◽  
The Body ◽  
Surgical Interventions ◽  
Number Of Children ◽  
The Past ◽  
A Chain ◽  
The Right

The number of children swallowing magnetic foreign bodies has been a significantly high for the past decades, increasingly needing endoscopic or surgical interventions. Case report. In our observation, a 12-year-old girl swallowed magnetic balls from childrens designer 10 days prior to hospital admission. Foreign bodies (5 balls) were found during X-ray examination in the projection of the cecum. Conservative therapy carried out for 4 days had no success, thus colonoscopy was performed to remove foreign bodies. Foreign bodies were fixed to the intestinal wall, and attempts to separate them were unsuccessful. When a medical magnet was placed outside the body in the right iliac region, a chain of magnetic balls detached from the intestinal wall and made it possible to be captured in a trap loop and be removed. The girl avoided a laparotomy with an opening of the colon. Conclusion. External use of a medical magnet is effective for navigation and assistance during colonoscopic extraction when magnetic foreign bodies are found in the colon.

The Feeling of Leading

Voice Leading ◽  
2016 ◽  
Author(s):  
David Huron
Keyword(s):  
Voice Leading ◽  
Musical Work ◽  
Musical Patterns ◽  
Melodic Expectation

A distinction is made between part-writing and voice leading. Even though music may exhibit correct part-writing, the music may nevertheless sounds like it is meandering aimlessly: voice leading adds the sense of tending, yearning, resolution, or momentum that contributes to the feeling of music “going somewhere.” Research on melodic expectation is summarized. When the music fails to conform to expected voice movements, the music is likely to evoke a wandering or purposeless quality. Predictability transforms good part-writing into good voice leading. Predictability is increased when musical patterns follow the norms and clichés of established styles. Familiarity with a given musical work also increases predictability. For unfamiliar works, predictability is increased when music makes use of recurring or imitative figures, themes, or motives.

Disabling the avant-garde: Listening to Berberian and Lucier

2019 ◽  
Vol 4 (2) ◽  
pp. 157-177
Author(s):  
Jennifer Iverson
Keyword(s):  
Electronic Music ◽  
The Body ◽  
Musical Work ◽  
Avant Garde

Abstract Avant-garde electronic music purports to be abstract rather than representational. We are supposed to care only about sound qua sound, but what if the body is fundamentally audible in the musical work? Furthermore, what if the audible body is disabled? This essay pursues several close listenings of the avant-garde electronic works Visage (1961) and I Am Sitting in a Room (1969). Both pieces feature stuttering voices that are highly mediated by technology. Sounding out disabilities from traumatic to mundane, the works promote an aural staring encounter, asking listeners to grapple with the discomfort that they may hear.

Preliminary Observations on the Ultrastructure of the Body Wall of Pomphorhynchus laevis (Acanthocephala)

1966 ◽  
Vol 40 (3-4) ◽  
pp. 395-402 ◽  
Author(s):  
F. R. Stranack ◽  
M. A. Woodhouse ◽  
R. L. Griffin
Keyword(s):  
Endoplasmic Reticulum ◽  
Body Wall ◽  
The Body ◽  
Pomphorhynchus Laevis ◽  
A Chain

The ultrastructure of the metasomal body wall of the acanthocephalan Pomphorhynchus laevis has been studied.The cuticle was seen to be pierced by numerous pores leading into tubular channels of the striped layer which appeared to have connections with the endoplasmic reticulum deeper in the body wall. The inner edge of the body wall was perforated by a number of channels which, it was thought, might form the final link in a chain of ramifying channels leading from the exterior of the parasite to the pseudocoel. The syncytial cytoplasm of the body wall was thought to be supported by the network of strands forming the felt layer.

scholarly journals Free Radicals and Antioxidants in Ankylosing Spondylitis

2019 ◽  
Vol 69 (12) ◽  
pp. 3634-3637
Author(s):  
Aurel Nechita ◽  
Ciprian Dinu ◽  
Alexandru Bogdan Ciubara ◽  
Gheorghe Raftu ◽  
Codrina Ancuta
Keyword(s):  
Oxidative Stress ◽  
Free Radicals ◽  
Ankylosing Spondylitis ◽  
The Body ◽  
System Response ◽  
Pathogenic Potential ◽  
Immune Mediated ◽  
Cell Processes ◽  
A Chain ◽  
Cell Variance

Free radicals are widely recognized as overloaded atoms, molecules or compounds that become unstable when lacking an electron;they steal an electron from various macromolecules (e.g. DNA, RNA, proteins) to chemically stabilize, while preferred targets remains polyunsaturated fatty acids in their membranes. When electron theft produces a chain reaction, normal cell processes turn into a real chaos that ultimately degrades the normal functioning of the cell. Variance of free radicals existing or formed in nature as a result of many processes (ultraviolet radiation, gamma, action specific particles, etc.) makes extremely difficult their classification. A partof the oxygen molecules (O2) that have entered the body through breathing is divided and oxygen atoms become reactive (free radicals) damaging the cell wall by oxidation. Oxidative stress, a term widely used to characterise inflammatory disorders caused by destructive oxygen molecules called free radicals, may exacerbate inflammation and impair immune system response due to free radicals. Oxidative stress is defined as the imbalance between oxidants and antioxidants, in favour of oxidants, with destructive and pathogenic potential. Depending on intensity, oxidative stress can occur inside or outside the cell. Intracellular stress can lead to cell necrosis or a more or less marked disruption of the cell, and may be catastrophic in the case of a non-reproducible cell; the extracellular oxidative stress is cytotoxic. Although considered in the pathobiology of several inflammatory immune-mediated rheumatic conditions, the exact role of oxidative stress in ankylosing spondylitis is still debatable.

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