Дисертації з теми "Flutter studies"
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Wong, Maverick Teck Ming 1970. "System modeling and control studies of flutter in turbomachinery." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/49979.
Повний текст джерела
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Ferria, Hakim. "Experimental Campaign on a Generic Model for Fluid-Structure Interaction Studies." Thesis, KTH, Kraft- och värmeteknologi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-48975.
Повний текст джерелаАнотація:
Fluid-structure interactions appear in many industrial applications in the field of energy technology. As the components are more and more pushed to higher performance, taking fluid-structure interaction phenomena into account has a great impact on the design as well as in the cost and safety. Internal flows related to propulsion systems in aerodynamics area are of our interest; and particularly aeroelasticity and flutter phenomena. A new 2D flexible generic model, so called bump, based on previous studies at the division of Heat and Power Technology about fluid-structure interactions is here presented. The overall goal is to enhance comprehension of flutter phenomenon. The current study exposes a preliminary experimental campaign regarding mechanical behaviour on two different test objects: an existing one made of polyurethane and a new one of aluminium. The setup is built in such a way that it allows the bumps to oscillate until 500Hz. The objective is to reach this frequency range by remaining in the first bending mode shape which is indeed considered as fundamental for flutter study. In this manner being as close as possible to the bending flutter configuration in high-subsonic and transonic flows will provide a deeper understanding of the shock wave boundary layer interaction and the force phase angle related to it. The results have pointed out that the bumps can reach a frequency of 250Hz by remaining in the first bending mode shape. The one in polyurethane can even reach frequency up to 350Hz; however, amplitude is higher than the theoretical one fixed to 0.5mm. Then unsteady pressure measurements for one operating point have been performed based on using recessed-mounted pressure transducers with Kulite fast response sensors. Variation amplitudes and phases of the unsteady pressure are thus correlated with the vibrations of the model. The operating point has been defined with respect to previous studies on the same static geometric model in order to use steady state base line; the steady flows appear consistent with each other. The results have pointed out that the shock wave induces strong amplification of the steady static pressure; however, this rise decreases when the reduced frequency increases. Finally some elements regarding propagating waves are suggested in the analysis for deeper investigations on such complex phenomena.
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Melo, Sissy Lara. "Ablação do istmo cavo-tricuspídeo para controle do flutter atrial: estudo prospectivo e randomizado comparando eficácia e segurança de cateter irrigado com cateter de 8 mm." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/5/5131/tde-20102005-150207/.
Повний текст джерелаАнотація:
O cateter irrigado foi comparado com o de 8 mm para ablação com radiofrequência do istmo cavo-tricuspídeo(Ist-CT). Foram randomizados 52 pacientes portadores de flutter atrial típico para ablação com cateter irrigado(grupoI) ou com cateter de 8 mm(grupo II). O bloqueio do Ist-CT foi obtido em 51 pacientes. Não houve diferença estatística em relação aos parâmetros de aplicação de RF entre os dois grupos. A ablação do Ist-CT com cateter irrigado versus cateter de 8mm foi igualmente eficaz e segura no controle do flutter atrial típico.A 4-mm cooled tip catheter was compared to an 8-mm tip catheter to cavotricuspid isthmus(CTI) ablation. This prospective study enrolled 52 patients with typical atrial flutter to ablation with a closed cooled-tip catheter(group1) or an 8-mm tip catheter. Radiofrequency(RF) applications were performed to achieve complete CTI block wich was achieved in 51 patients. No significant differences were found in the procedure parameters. CTI ablation with an irrigated tip catheter versus an 8-mm tip catheter was equally effective and satisfactorily safe for ablation of typical atrial flutter.
4
Ferria, Hakim. "Contribution to Numerical and Experimental Studies of Flutter in Space Turbines. Aerodynamic Analysis of Subsonic or Supersonic Flows in Response to a Prescribed Vibratory Mode of the Structure." Phd thesis, Ecole Centrale de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00677648.
Повний текст джерелаАнотація:
Modern turbomachines are designed towards thinner, lighter and highly loaded blades. This gives rise to increased sensitivity to flow induced vibrations such as flutter, which leads to structure failure in a short period of time if not sufficiently damped. Although numerical tools are more and more reliable, flutter prediction still depends on a large degree on simplified models. In addition, the critical nature of flutter, resulting in poor welldocumented real cases in the open literature, and the lack of experimental database typical of engine flows make its apprehension even more challenging. In that context, the present thesis is dedicated to study flutter in recent turbines through aerodynamic analysis of subsonic or supersonic flows in response to a prescribed vibratory mode of the structure. The objective is to highlight some mechanisms potentially responsible for flutter in order to be in better position when designing blades. The strategy consists in leading both experimental and numerical investigations. The experimental part is based on a worldwide unique annular turbine sector cascade employed for measuring the aeroelastic response by means of the aerodynamic influence coefficient technique. The cascade comprises seven low pressure gas turbine blades one of which can oscillate in a controlled way as a rigid body. Aeroelastic responses are measured at various mechanical and aerodynamic parameters: pure and combined modeshapes, reduced frequency, Mach number, incidence angle. In addition to turbulence level measurements, the database aims at assessing the influence of these parameters on the aerodynamic damping, at validating the linear combination principle and at providing input for numerical tools. The numerical part is based on unsteady computations linearized in the frequency domain and performed in the traveling wave mode. The focus is put on two industrial space turbines: 2D computations are performed on an integrally bladed disk, also called blisk; its very low viscous material damping results in complex motions with combined modes and extremely high reduced frequency. The blisk operates at low subsonic conditions without strong non-linearities. Although the blades have been predicted aeroelastically stable, an original methodology based on elementary decompositions of the blade motion is presented to identify the destabilizing movements. The results suggest that the so-called classical flutter is surprisingly prone to occur. Moreover, the aerodynamic damping has been found extremely sensitive to the interblade phase angle and cut-on/cut-off conditions.* 3D computations are then performed on a supersonic turbine, which features shockwaves and boundary layer separation. In contrast, the blade motion is of elementary nature, i.e. purely axial. The blades have been predicted aeroelastically unstable for backward traveling waves and stable for forward traveling waves. The low reduced frequencies allow quasi-steady analysis, which still account for flutter mechanisms: the shock wave motion establishes the boundary between stable and unstable configurations.
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Björemo, Christine. "En kvalitativ studie om Flutter : Apputveckling inom crossplattform." Thesis, Karlstads universitet, Handelshögskolan (from 2013), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-80688.
Повний текст джерелаАнотація:
Syftet med denna kandidatuppsats i informatik är att undersöka på vilket sätt ramverket Flutter underlättar för dagens apputvecklare i cross-plattformmiljöer. Uppsatsen belyser för- och nackdelar med Flutter utifrån apputvecklare-perspektiv. Det största problemområde från tidigare studier och forskningar inom cross-plattformutveckling är främst den undermåttliga dokumentation samt långa utvecklingstider. Denna kvalitativa studie är fokuserad på dessa problemområden och resultatet presenteras under kapitel 4 ”Resultat”. En analysmodell har utformats och använts i syfte att, för respondenter, svara på relevanta frågor där ramverket Flutter hanterar dessa viktiga problemområden. Slutsatsen av denna studie visar att det finns ett tydligt mönster där ramverktyget Flutter har satsat på att hantera dessa problemområden genom följande styrkor: Verktyget ”Hot Reload” (hjälpmedel som uppdaterar koden för att snabbt se ändringar direkt i simulatorn) Dart (ett programmeringsspråk) Dokumentation (tydlig, alltid i tid och flera olika kommunikationskanaler) Parallellt med kandidatuppsatsen har författaren utvecklat en egen app via Flutter. Syftet med denna app är att underlätta semesterplaneringen åt en avdelning på företaget AFRY. I denna kandidatuppstats används ej författarens egna upplevelser med Flutter som empiri men avslutar uppsatsen med egna reflektioner.
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Sauma, Robin, and Milad Ziai. "Komparativ studie mellan React-Native och Flutter med avseende på utvecklarens produktivitet." Thesis, Tekniska Högskolan, Jönköping University, JTH, Datateknik och informatik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-49913.
Повний текст джерелаАнотація:
Utvecklingen av mobila hybrid applikationer har ökat drastiskt under det senaste årtiondet. Med tanke på mångfalden i hur stora företag börjar investera i ramverk med support för utveckling av mobila hybrid applikationer (multiplattforms ramverk), ökar nödvändigheten av aktuella studier inom detta ämnesområde. Facebook och Google är två välkända företag som har utvecklat React-Native respektive Flutter. Dessa multiplattforms ramverk utvecklas kontinuerligt och skillnader uppstår inom teknologierna hos ramverken vilket gör nya studier mer lämpliga. Syftet med denna studie är att undersöka vilket ramverk som bidrar med bäst produktivitet för utvecklaren med tanke på bristen av studier inom ämnet. Specifikt har en fallstudie utförts där studiens frågeställningar har besvarats. Respektive frågeställningarna blev uppdelade i tre delfrågeställningar där varje fråga fick angivna kriterier att följa i fallstudien och båda ramverken blev tilldelade poäng om tillhörande kriterium för varje fråga var uppfylld. I slutet av studien räknades ett medelvärde ut som tilldelades till båda ramverken. Resultaten visade att det finns små skillnader i form av dess bidrag med bäst produktivitet för utvecklaren.The development of hybrid mobile applications has increased rapidly in the last decade. Considering the diversity in how big companies starts to invest in frameworks that supports hybrid application development (cross-platform framework), the necessity of contemporary studies in this subject increase. Facebook and Google are two well-known companies that have developed React-Native and Flutter, respectively. These cross-platform frameworks are continuously developing, and differences occur in their technologies which makes new studies even more appropriate. The purpose of this study is to investigate which of these two frameworks contribute the most for the developer’s productivity considering the lack of studies in this specific subject. Specifically, a case study has been conducted where the research questions were answered. The two research questions were divided into three sub questions, respectively where each question was given criteria to follow in the case study and each framework were assigned points if the associated criterion for each question were met. In the end of the study a mean value was assigned to each framework. The results showed that there are small differences in terms of its contribution for the developer’s productivity.
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Lennartsson, Jonna, and Oscar Bjurelid. "En jämförande studie i prestanda vid bildbehandling mellan React Native och Flutter." Thesis, Tekniska Högskolan, Jönköping University, JTH, Datateknik och informatik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-50345.
Повний текст джерелаАнотація:
Syfte Syftet med detta examensarbete var att undersöka potentiella prestandaskillnader mellan React Native och Flutter för att underlätta vid val av multiplattform-ramverk. Metod För att besvara examensarbetets frågeställningar utfördes en experimentell studie för att samla empirisk data. Resultat Studiens resultat påvisar att React Native presterar bättre än Flutter vid bildbehandling genom applicering av filter. Implikationer Detta examensarbete bidrar till att minska kunskapsluckan gällande jämförelser i prestanda mellan ramverken React Native och Flutter. Begränsningar Under den experimentella studien har en iOS enhet och en Android enhet använts. Studien begränsades till applicering av tre olika filter. Nyckelord Multiplattform, React Native, Flutter, bildbehandling, prestanda, mobil apputveckling.Purpose The purpose of this student thesis was to investigate potential differences in performance between React Native and Flutter, this to make the decision easier when choosing a cross-platform framework. Method To answer the thesis questions an experimental study was conducted to collect empirical data. Findings The findings in this student thesis shows that during image processing with filters, React Native performs better than Flutter. Implications This student thesis contributes by shrinking the gap regarding comparisons in performance between the frameworks React Native and Flutter. Limitations The experimental study was conducted on one iOS device and one Android device. The thesis was limited to applying three different image filters. Keywords Cross-platform, React Native, Flutter, image processing, performance, mobile app development.
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Malki, Ara. "Hybridapplikationer med Apache Cordova och Flutter : En jämförande studie ur ett prestandaperspektiv." Thesis, Karlstads universitet, Handelshögskolan (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84423.
Повний текст джерелаАнотація:
Idag ser man ett ökat intresset för applikationsutveckling. Den hybrida applikationsutvecklingen är något företag inte kan se förbi längre då dess fördelar väger tungt. Fördelarna med hybrida applikationer är bland annat det faktum att de använder en kodbas för flera plattformar. Detta i sin tur leder till en kraftig tids- och resursbesparing under utvecklingsfasen. De två hybrida ramverken som valts ut i ett jämförande syfte är Apache Cordova och Flutter, och syftet är att identifiera vilket ramverk presterar bäst ur ett prestandaperspektiv. Den frågeställning som besvaras i studien är: Vilket ramverk för att skapa en hybrid applikation av Apache Cordova och Flutter, är att rekommendera ur ett prestandaperspektiv? Studien mäter prestandarelaterade variabler, dessa är exekveringshastighet, uppstartstid, CPU-, RAM- och batterianvändning. Studien gör detta genom skapandet av två funktionellt identiska applikationer i respektive ramverk. Datainsamlingen görs genom Android Profiler, Logcat samt egen implementerad kod. Resultatet presenterar mätningar i respektive prestandarelaterad variabel. Det som redovisas i det totala resultatet visar på att Flutter är det ramverk som presterar snabbare men även är det ramverk som har en högre resursanvändning.Today we see an increased trend around the interest in application development, and in our society there are over three billion smartphone users. Hybrid application development is something companies can no longer overlook because the benefits weigh heavily. The benefits with hybrid applications include the fact that it uses a multi-platform code base. This in turn leads to a significant saving of time and resources during the development process. The two hybrid frameworks chosen for a comparative purpose are Apache Cordova and Flutter, and the purpose is to identify which framework performs the best out of a performance perspective. The question answered in the study is: What framework for creating a hybrid application between Apache Cordova and Flutter, is recommended out of a performance perspective? The study measures performance-related variables, these are execution speed, start-up time, CPU, RAM and battery usage. The study does this by creating two functionally identical applications in each framework. Data collection takes place via Android Profiler, Logcat and own implemented code. The result shows measurements in each performance-related variable. Not only does the overall results show that Flutter is the faster performing framework but also the framework with a higher use of resources.
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Redburn, Lauren C. "A world of flute music| A look at the impact of siku and shakuhachi flute traditions on Western classical repertoire." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1528029.
Повний текст джерелаАнотація:
This study investigates the siku of Argentina, Peru, Bolivia and Venezuela; and the shakuhachi of Japan and their effect on Western classical flute repertoire. By exploring the histories, construction of the flutes, and the role each flute has in its society, a better understanding of these flutes and the cultural aesthetic in which they work will be achieved thus creating a higher level of authenticity when performing these pieces. The pieces being surveyed are Flute 3.2.4. by Adriana Verdie and Nesting of Cranes by Wil Offermans. Notes on technique of what the author found useful when playing these pieces are found at the end of each chapter.
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Herring, Judith Ann. "A guide to intermediate-level flute concerti." Virtual Press, 1987. http://liblink.bsu.edu/uhtbin/catkey/487502.
Повний текст джерелаАнотація:
There exists a substantial lack of familiarity among flute teachers and music educators with extant publications of pertinent pedagogical flute repertoire at the intermediate level, specifically the concerto. Although readily available, suitable concerti for the important progression of the student from intermediate to the advanced level are often substituted with works too difficult technically and musically. In many situations, introduction and exposure to the concerto genre is virtually overlooked. Therefore, progression from an intermediate to an advanced level is often hampered, and a vital phase in the student's technical and musical development is neglected.This guide to intermediate-level concerti provides a systematic, methodical approach to the teaching of four concerti appropriate technically and musically for the established level of playing. The historical eras Baroque, Classical, Romantic, and Twentieth Century are each represented by one concerto.Chapters II, III, IV, and V provide a description of the concerto's evolution during the particular historical era specified. This examination is followed by a brief biographical sketch of the composer whose work is being discussed. The significance of each concerto in the composer's output is provided when such information is available. A list of all current and accessible editions is provided along with information about individual editors. An editorial paleography is supplied when more than one edition exists. Each of these four chapters concludes with a formal analysis of the concerto under discussion.Chapter VI provides a plan for the teaching and performing of each concerto. This plan is divided into two headings. The first is a didactic analysis of the following technical considerations: alternate fingerings, arpeggiated passages, double tonguing, meter, rhythmic patterns, and trills. Parallel etudes drawn from existing flute literature and original exercises by the writer are supplied. The second major area of discussion within the pedagogical analysis comes under the heading of the following interpretative considerations: articulation, breathing/phrasing dynamics, ornamentation, and tempo.The final chapter of the work includes a summary, conclusions, and recommendations. Three appendices contain moderately easy to intermediate, and intermediate to moderately difficult flute concerti as well as a publisher and agent code list.
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Mosello, Adah Toland. "The university flute choir : a study of its viability as a performing ensemble and instructional medium with a compendium of recommendations and warm-up exercises." Virtual Press, 1989. http://liblink.bsu.edu/uhtbin/catkey/722776.
Повний текст джерелаАнотація:
The purpose of this project was to examine aspects of flute choir formation, participation, and performance as they relate to ensembles at the university level. Three main areas were covered: (1) a presentation and an analysis of data resulting from a survey of colleges and universities that are members of the National Association of Schools of Music (NASM); (2) a discussion of the advantages of establishing a college flute choir and the problems encountered in maintaining the ensemble; and (3) a presentation of various warm-up exercises that may be used in a flute choir rehearsal.Of the 449 flute choir questionnaires distributed, 120 (26.9%) were returned of which 71 (59.2%) were found to have existing flute choirs. A list of states represented by the respondents and twelve tables were presented. The tables included facts pertaining to the profile of the universities and music departments of the respondents, various structural elements of flute choirs, reasons for maintaining a university flute choir, and the relative importance of various warm-up exercises.The data presented in the tables included details regarding frequency and length of rehearsals, availability of E-•flat, alto, and bass flutes, number of concerts given, membership and audition requirements, and college credit offerings for university flute ensembles. Problems encountered in maintaining the ensemble, selection of repertoire, and preparation for performance were also covered. The reasons deemed most important for establishing or retaining a university flute choir include the development of chamber ensemble playing skills, individual playing skills, style interpretation, sight-reading skill, and the addition of a performance outlet. Warm-up exercises listed as the most often used in flute choir rehearsals include those for intonation, scales, and triads. Warm-up exercises that can be used in a flute ensemble setting to enhance the rehearsal routine are included and cover the following areas: Relaxation Techniques, Breathing, Tone Development, Intonation, Technical Exercises (Scales and Triads), Rhythmic Drills, and Sight-reading.From the statistics cited and the topics explored in this project, the premise is substantiated that the university flute choir is a viable performing ensemble and can also serve as an effective instructional medium.School of Music
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Joyce-Grendahl, Kathleen. "The Native American flute in the southwestern United States: Past and present." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/282153.
Повний текст джерелаАнотація:
This document focuses upon the past and present role of the Native American flute in the Southwestern United States, with the primary emphasis being placed upon the present-day use of the flute. Through this study, I hope to provide an evaluation of the Native American flute's musical significance (past and present use, and current literature and capabilities) that will lead to its possible inclusion into the Western curriculum of collegiate music scholarship, and contribute to a greater understanding of the instrument. In addition, through the information that is generated and disclosed by this exploration, it is hoped that the Native American flute may begin to gain an overall acceptance as an instrument of cultural and musical distinction and merit, specifically within the world of collegiate music education. This document is divided into chapters dealing with past and present uses of the Native American flute. The "Introduction" states the purpose, scope, and justification for this study. Chapter 1 describes the physical characteristics of the past and present-day Native American flute. Chapter 2 deals exclusively with the past traditions and functions of the flute. For example, selected myths from various tribes that employ the Native American flute are discussed. Also in Chapter 2, the past ceremonial and non-ceremonial functions of the Native American flute are detailed. Chapter 3 deals exclusively with the flute as it is used in today's world. Here, the rise in status of the flute is illustrated by discussing four prominent performers, their recordings, and approach to flute playing. They are as follows: Kelvin Bizahaloni, R. Carlos Nakai, John Rainer, Jr., and Ward Jene Stroud. Also, three composers who are presently creating repertoire for this instrument are discussed. They are James DeMars, Gina Genova, and Jay Vosk. Chapter 4 deals with the ways in which the Native American flute can be imported into the college music curriculum. Finally, Chapter 5 summarizes the document and provides ideas for further study.
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PERLOVE, NINA MARGARET. "ETHEREAL FLUIDITY: THE LATE FLUTE WORKS OF AARON COPLAND." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1053453216.
Повний текст джерела
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Molumby, Nicole Lena. "The application of different teaching strategies reflective of individiual students' learning modalities in the university flute studio class." The Ohio State University, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=osu1086122579.
Повний текст джерела
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Scott, Lorie Elizabeth. "Gradus ad Parnassum of Modern Flute Technique: An Explication of Musical Intention and Design in 30 Capricen für Flöte allein, Opus 107 by Sigfrid Karg-Elert, with Three Recitals of Selected Works by Schulhoff, Telemann, Berio, Bach, Rodrigo, Gieseking, Reinecke, and Others." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4931/.
Повний текст джерелаАнотація:
Gradus ad Parnassum of Modern Flute Technique: An Explication of Musical Intention and Design in 30 Capricen für Flöte allein, Opus 107 by Sigfrid Karg-Elert, with Three Recitals of Selected Works by Schulhoff, Telemann, Berio, Bach, Rodrigo, Gieseking, Reinecke, and Others
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Godoy, Jr Martin. "Flute Music of Cristóbal Halffter: His Roots in Spanish Tradition and Place in the Avant-Garde Generación del 51." Thesis, University of North Texas, 2020. https://digital.library.unt.edu/ark:/67531/metadc1703350/.
Повний текст джерелаАнотація:
Cristóbal Halffter, born in 1930, established himself as an important figure in Spanish avant-garde composition in the middle of the twentieth-century. As one of the prominent leaders of the Generación del 51, he helped establish modernity in music as a part of Spain's identity. His compositional style mixing tradition with the avant-garde was built on the success and breakthrough of Manuel de Falla, a composer with close ties to Halffter's family and served as a 'father figure' to the Generación del 51. This study begins with a discussion on Falla's work and reception, as he lay the groundwork for modernism in Spanish music. Further, discussion on Halffter's background and compositional periods, from his nationalist approach in the 1950s to his embrace of the avant-garde in the 1960s and beyond exemplifies Halffter's prominent role in shaping Spanish modernity. This research then sheds light on previously unexplored solo flute works Debla [Solo VI] for Flute and Studie II [Solo III] for Flute by Halffter. Provided is insight to their respective influences (the Spanish debla and the Fibonacci sequence), analysis of each work, and a discussion on their similarities and differences. By taking an informative approach prior to analysis and performance suggestions, readers will gain insight to Halffter's Spanish roots as they relate to nationalism and the avant-garde, his affiliation with the Generación del 51, and his compositional style.
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Hartstein, Marcus. "The creative process in Don Banks' early chamber music : a sketch study of Three studies for cello and piano and Three episodes for flute and piano." Phd thesis, Sydney Conservatorium of Music, 2000. http://hdl.handle.net/2123/9109.
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Seger, Olivia. "Varför väljer elever tvärflöjt? : En kvantitativ studie i barn- och ungdomars syn på musikundervisning i tvärflöjt i musik- och kulturskolor." Thesis, Karlstads universitet, Institutionen för konstnärliga studier (from 2013), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-70167.
Повний текст джерелаАнотація:
Föreliggande studies syfte är att få insikt i vad som påverkar elevers val av tvärflöjt och fortsatta spelande i musik- och kulturskolan.I bakgrundskapitlet presenteras forskning om musik- och kulturskolor samt tidigare forskning kring barn- och ungdomars instrumentval. Som teoretisk utgångspunkt användspositivism. Sammanlagt 97 respondenter i åldrarna 7–22 år genomförde en tvärsnittsdesignad webbenkät. Resultatet har analyserats med en univariat analys där en variabel studerats i taget. I resultatet framkommer det att de största påverkansfaktorerna till att elever valt att spela tvärflöjt är instrumentprovdagar och att känna någon som spelar tvärflöjt. Vidare visar resultatet att det eleverna önskar ha mer av i musik- och kulturskolan är att få möjlighet att spela med andra i band eller orkester. I diskussionen lyfts fem teman upp: genus och instrumentvalet, betydelse av sociala sammanhang, instrumentets egenskaper, förebilders påverkan och lärarens betydelse.The purpose of the present study is to gain insight into what influencesstudents´ choice of flute and continued participation in Swedish community music schools. Research on community music schools as well as the factors influencinginstrument choice among children and youths are presented in the background section. Positivism was applied as a theoretical lens for the present study. A total of 97 participants ranging from 7 to 22 years of age, filled out a cross sectional websurvey. The result has been analyzed with a univariate analysis where one variable is studied at a time.The results revealed that instrument trial days and knowing someone who plays flute were the most important factors determining the student´ perference for flute playing. Furthermore, the results revealed that students requested more frequent oportunities to play with others in bands or orchestras. In the discussion, five themes are raised: gender and instrument selection, importance of social contexts, the characteristics of the instrument, the impact of role models and the importance of the teacher.
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Sandberg, Julia. ""Är det inte dags nu att öva litegrann?" : En studie om föräldrars delaktighet i sitt barns musicerande på tvärflöjt." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik, konst och samhälle, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-85296.
Повний текст джерелаАнотація:
Studiens syfte är att synliggöra hur föräldrar upplever sin delaktighet i sitt barns musicerande på tvärflöjt. Studien är främst kvalitativ med pragmatismen som teoretisk utgångspunkt. I studien genomfördes och användes fyra halvstrukturerade intervjuer med föräldrar vars barn spelar tvärflöjt som underlag för analys. Studien använde sig också av en kvantitativ metod då en enkät användes för en närmare undersökning av fältet och som inspiration till intervjufrågorna. Enkäten vände sig till vårdnadshavare vars barn spelar tvärflöjt och besvarades av 64 personer. Resultatet visar att föräldrar upplever sin delaktighet i sitt barns musicerande genom att på olika sätt vara delaktig i barnets musicerande bland annat genom att visa intresse och lösa barnets problem som uppkommer i samband med musicerandet på tvärflöjt. Resultatet visar också att föräldrarna upplever utmaningar i att vara delaktig i sitt barns musicerande på tvärflöjt främst på grund av föräldrarnas musikaliska kunskaper men också tid och ork. Slutsatsen är att föräldrar upplever sin delaktighet som varierande i sitt barns musicerande men att deras attityd och uppfattning kring musik och barnets musicerande är genomgående positiv.The aim of this study is to make visible how parents experience their involvement in their kid’s flute playing. The study is a qualitative study with pragmatism as its theoretical framework. In this study four half structured interviews with parents whose kids play the flute was used as basis for the analysis. This study also used a quantitative method in the form of a survey that was used to examine the field and for inspiration for the interview questions. The survey was directed to parents whose kids play the flute and was answered by 64 parents. The result of this study shows that parents experience their involvement in their kid’s flute playing by being involved in different ways for example by showing interest and to solve their kid’s problems that arise when the kid is playing the flute. The result also shows that parents experience challenges in their involvement with their kids playing the flute mostly because of their limited musical knowledge but also because of lack of time and energy. The conclusion of this study is that parents experience their involvement in their kid’s flute playing as variated but that the parent’s attitude and perception of music and the fact that their kids are playing the flute is throughout positive.
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Pagliacci, Vanessa. "Aritmie in atrio destro e morfologia del seno coronario." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Знайти повний текст джерелаАнотація:
Il seno coronario è la principale vena della circolazione coronaria, che ha il compito di portare il sangue refluo del cuore all'atrio destro, dove il suo orifizio si trova. Data tale posizione, si ipotizza che sia influenzato dall'attività elettrica del cuore morfologicamente e dimensionalmente, e in particolare in questa tesi si dimostra come in presenza di determinate aritmie sopraventricolari il suo ostio risulti dilatato. Per fare ciò viene analizzato un database contenente informazioni relative a 71 pazienti affetti da AVNRT, FA, flutter atriale e TAE che si sono sottoposti ad una procedura di ablazione transcatetere con radiofrequenza.
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Payerl, Linda. "Med kroppen som arbetsredskap : - en enkätstudie om muskelspänningar och belastningsskador bland tvärflöjtlärare på Sveriges kommunala musik- och kulturskolor." Thesis, Karlstads universitet, Institutionen för konstnärliga studier, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-44444.
Повний текст джерелаАнотація:
Denna studies syfte är att kartlägga förekomsten av fysiska besvär hos tvärflöjtlärare på Sveriges kommunala musik- och kulturskolor samt deras kunskap om, användning av och undervisning om ergonomi och förebyggande av skador. De frågeställningar som tas upp i arbetet är hur vanligt förekommande det är med fysiska besvär bland tvärflöjtlärare, huruvida de har fått adekvat ergonomikunskap för den profession de utövar, om de arbetar med förebyggande åtgärder mot fysiska besvär och i vilken utsträckning de inkluderar ergonomi i sin undervisning. Studien är en kvantitativ surveyundersökning och den genomfördes i form av en webb-enkät. Resultatet visar att 49 % av de tillfrågade tvärflöjtlärarna lider av fysiska besvär som de kopplar till tvärflöjtspelet. Besvären sitter framförallt i axlar, nacke/hals och rygg. 60 % av tvärflöjtlärarna arbetar med förebyggande åtgärder mot fysiska besvär, varav de vanligaste vardagliga åtgärderna handlar om att ta regelbundna pauser under tvärflöjtspelet och att regelbundet utöva någon fysisk träningsform. De vanligaste ergonomiska momenten som lärare tar upp med sina elever är övningsrutiner, kropps- och instrumenthållning, stretch- och avslappningsövningar samt vikten av fysisk träning. Resultatet visar även att många tvärflöjtlärare skulle vilja eller behöva bättre kunskaper om ergonomi eftersom musikutbildningar generellt förbereder musiker dåligt på de kroppsliga utmaningar som yrkeslivet innebär. I slutdiskussionen poängteras även att sjukvården behöver få bättre kunskap om musikerskador för att dessa ska kunna förhindras och botas, och att musiklärares arbetsvillkor måste uppmärksammas för att antalet skador ska kunna minimeras.The purpose of this study is to map the occurrence of physical ailments among flute teachers in Swedish community schools of music and art, as well as their knowledge of, their use of and their teaching in ergonomics and injury prevention. The questions raised are how commonly occurring physical ailments are among flute teachers, whether or not they have received adequate knowledge in ergonomics for the profession they practice, if they work with preventive measures against physical ailments and to what extent they include ergonomics in their teaching. The study is a quantitative survey in the form of a web questionnaire. The results show that 49 % of the surveyed flute teachers suffer from physical ailments, which they connect to flute playing. The problems are mainly located in the shoulders, the neck and the back. 60 % of the flute teachers work with preventive measures against physical ailments, of which the most common everyday actions are regular breaks during flute practice and physical exercise on a regular basis. The most common ergonomic factors that teachers communicate to their pupils are practice routines, body posture, instrumental grip, stretching and relaxation exercises and the importance of physical training. The results also show that many flute teachers would want or need better knowledge of ergonomics, because music education generally prepares musicians poorly for the physical challenges of the professional life. In the concluding discussion is emphasized that healthcare needs to be better informed of musicians’ injuries for these to be prevented and cured, and music teachers’ working conditions require attention to minimize the number of injuries.
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Fleming, Patrick Hugh. "Wind tunnel studies on rotational effects in lightly-iced transmission line galloping." 2010. http://hdl.handle.net/1993/4017.
Повний текст джерелаАнотація:
Overhead transmission lines are prone to undergo large amplitude, low frequency vibrations when exposed to freezing rain and steady side winds. These vibrations are referred to as galloping. They involve a dominant vertical motion in addition to twisting and horizontal swaying. Field reports indicate that the majority of galloping cases are associated with lightly-iced lines with thin ice accretions. Previous studies have failed to explain this trend satisfactorily. The present thesis involves a series of wind tunnel experiments to understand the rotational effects in lightly-iced transmission line galloping. The work to restore and upgrade the wind tunnel used for the experiments are also reported.
Aerodynamic loads are measured first on a stationary model of a short, representative section of a lightly-iced conductor. Subsequently, automated controls force the model to undergo rotational oscillations, and the aerodynamic loads measured from these dynamic tests are compared to the stationary results. The airflow in both sets of experiments is visualised by using a laser-based system. The stationary test shows that
the well-established den Hartog criterion for predicting vertical galloping does not explain why lightly-iced lines gallop. The dynamic experiments however confirm the presence of rotation-induced lift, unaccounted for by quasi-steady theory and the den Hartog criterion.
This additional lift force increases the coupling between the rotational and vertical directions and may promote coupled aerodynamic instability. Visualisations indicate that the surface irregularities of the ice and the rotational motion are jointly responsible for the rotation-induced lift forces observed in the aerodynamic measurements.
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Mackie, DC. "The flute study : a comparative data base of flute studies for the development of the pedagogy of the flute." Thesis, 1998. https://eprints.utas.edu.au/20667/1/whole_MackieDouglasClive1999_thesis.pdf.
Повний текст джерелаАнотація:
The purpose of this dissertation was to construct a database of flute studies for use by teachers and students. There are difficulties for teachers in the choice of suitable studies caused by geographic isolation or lack of familiarity with, or access to, the available study repertoire. There is also a need to identify currently available technical and study repertoire for the flute, according to criteria of suitability for particular needs of students. In order to address these problems a survey of teachers was undertaken to establish a comprehensive list of criteria relating to the perceived technical needs of students at various levels. Once this was done, approximately three thousand studies from the currently available technical study repertoire were analysed, using the developed criteria. Some collections of studies were also analysed and compared with the general repertoire, and catalogues examined to see if these could be a viable solution to teachers' difficulties. This was found not to be the case, and a database was presented as the most practical solution for teachers searching for studies which address specific technical problems.
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Beard, Christine Elizabeth 1971. "Excerpts for flute from the wind band literature : an annotated guide for practice, performance, and audition preparation, presented as a progressive supplementary teaching method." 2003. http://hdl.handle.net/2152/12546.
Повний текст джерела
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Смородіна, Валерія Юріївна. "Розробка Android-додатку «Chat App» засобами Firebase". Магістерська робота, 2021. https://dspace.znu.edu.ua/jspui/handle/12345/6090.
Повний текст джерелаАнотація:
Смородіна В. Ю. Розробка Android-додатку «Chat App» засобами Firebase : кваліфікаційна робота магістра спеціальності 121 "Інженерія програмного забезпечення" / наук. керівник О. В. Кудін. Запоріжжя : ЗНУ, 2021. 48 с.UA : Робота викладена на 48 сторінках друкованого тексту, містить 22 рисунків, 5 таблиць, 10 джерел, 1 додаток. Об’єкт дослідження: процес передачі повідомлень через мобільний додаток. Мета дослідження: розробка програмної реалізації мобільного додатку з графічним інтерфейсом для обміну повідомленнями у мережі. У кваліфікаційної роботі викладені теоретичні відомості про сервіси обміну повідомленнями та мобільний додаток. На основі даних теоретичних відомостей розроблено програмну реалізацію електронного мобільного додатку месенджер та користувацький інтерфейс у середовищі програмування Android Studiо у вигляді проекту мобільного додатку, використовуючи мову програмування Dart. В результаті роботи отримано багатокористувацький додаток для сервісу обміну повідомленнями.
EN : The work is presented on 48 pages of printed text, 22 figures, 5 tables, 10 references, 1 supplement. The object of the study is the process of sending messages through a mobile application. The aim of the study is to develop a mobile application for the messaging service. Qualification work contains theoretical information about messaging services and a mobile application. Based on the data of theoretical information, the software implementation of the electronic mobile application of the messaging service and the user interface in the Android Studio programming environment in the form of a mobile application project using the Dart programming language have been developed. As a result of work the multiuser application for messaging service is received.
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Ke, Chun-Sheng, and 柯俊生. "The latent curriculum studies of Art mass organizations-as Wirral Community Wind Band and Straight flute group in Wunlin Elementary school." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/28373207214785169491.
Повний текст джерелаАнотація:
碩士國立臺北教育大學
藝術與造形設計學系碩士班
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Abstract The target of this study is focused on the unexpected learning achievements for the students who join the wirral community wind band or straight flute group in Wunlin Elementary school besides of their regular learning processes. During 2007 to 2010, I took up the position of the chief of Student business department. For this reason, I had chances to participate in the operation of the groups and observe them directly, such as competitions, practicing, yearly achievement publication,School anniversary concerts, performances of the community festival celebrations or performance of student recruitment. Base on the data of directly observation and analysis of the reflection, from the side of alumnus to review the conclusion of observing, what is the resource of the potential curriculum in the art mass organizations? What is the content? How to effect? Every student has a chance to learn each other in the groups. When finding the shorts by observing the others, they can collect their thoughts and increase their will and motive to practice with the others. They are willing to learn and realize their target. This is the result of inspiring each other in the groups. A school is a planned place of intensive learning. It’s impossible to give the whole knowledge and experiments in one time, especially for the different students. How to collect suitable materials to students? As this reason, the ways to provide choices of Multi-dimensional mass organizations and a suitable Multi-dimensional development, explore their potentials, help them to establish their self-confidence and self-approval, and increase the extra velum are very important. Key words: potential curriculum, Association dynamics, Multi-dimensional intelligence, the operation of the groups
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Untiedt, Glenda Louise. "Scenography in context : a comparative analysis of the influences on set designs for Wolfgang Amadeus Mozart's opera The Magic Flute (1791) with specific reference to selected set designers." Thesis, 2013. http://hdl.handle.net/10413/9669.
Повний текст джерелаАнотація:
The aim of this dissertation is to comparatively analyse the set designs for Wolfgang Amadeus Mozart’s (1756-1791) opera, The Magic Flute (1791), with specific reference to selected set designers from the 18th to the early 21st century. The selection was made in light of each set designer’s unique design concepts for The Magic Flute which were all realised as stage settings in a proscenium arch theatre.
In order to analyse the designs, it is necessary to trace theatrical practices and chronologically examine the reforms that affected the visual and spatial representation of scenography from the 18th to the 20th
Chapter one provides a brief overview of the development of the proscenium arch stage. It examines the architectural reforms that were made to the proscenium arch in order to accommodate deeper stages and changes in stage settings. In addition, Chapter one investigates methods that theatre architects used to alter the proscenium arch and forestage in order to create a unity between the audience members and the performance. century. The set designs for The Magic Flute by Emanuel Johann Schikaneder (1791), Karl Friederich Schinkel (1816), David Hockney (1978) and William Kentridge (2007) will be analysed within the context of this investigation.
Chapter two further considers the architectural modifications that were made to the stage and auditoria of opera theatres in more detail, from the first U-shaped auditorium onwards. It is essential to consider the different architectural structures of opera theatres because in order for each designer to initiate their design concept, they would be required to consider the architectural limitations of their chosen auditoria. The architectural structure would be determined by the foyer area, the style and arrangement of seating and the size of the proscenium arch and stage.
Chapter three, by means of a comparative analysis, considers the social and cultural influences on the design concepts of Schikaneder, Schinkel and Hockney and how they informed those of Kentridge for The Magic Flute. It also provides a brief overview of stage lighting, scenic styles and stage machinery used in opera from the 16th to the 20th
Chapter four classifies the theatrical spaces used in opera theatres by examining three key areas in an opera theatre, in relation to the foyer, auditorium and stage area. This investigation will be conducted with specific reference to the Theatre Auf Der Wieden, The Royal Opera House, the old Glyndebourne Opera House and The Artscape Opera House. In addition to this it will examine the selected designers’ approach to their design concepts by comparatively analysing the stage settings of Schikaneder, Schinkel, Hockney and Kentridge for The Magic Flute and the stage technology that was used to realise their design concepts. Thereafter, the set designs for Kentridge’s production and how they were conceptualised from a South African perspective will be examined. century
Chapter five summarises the ways in which scenography is influenced by architectural, cultural and theatrical discourses, from the analysis of the designs and concepts for The Magic Flute.Thesis (M.A.)-University of KwaZulu-Natal, Durban, 2013.
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Simard-Saint-Cyr, Nora. "Le répertoire baroque interprété par les grands flûtistes de 1960 à aujourd’hui : une étude sur l’authenticité et son évolution à travers le temps." Thèse, 2019. http://hdl.handle.net/1866/23592.
Повний текст джерелаАнотація:
Dans ce mémoire, nous avons étudié l’impact du mouvement HIP (Historically informed performance) sur la manière dont les flûtistes interprètent le répertoire baroque depuis 60 ans. Nous avons analysé avec Sonic visualiser des enregistrements de cinq flûtistes, réalisés tant sur la flûte baroque que la flûte moderne. Le logiciel a permis de générer des données graphiques qui appuient objectivement les constats observés en ce qui a trait au tempo, aux ornements, aux articulations, aux nuances et au vibrato. En comparant ces enregistrements, nous avons remarqué qu’il existe plusieurs points communs entre les interprètes qui jouent sur un instrument baroque et ceux qui jouent sur un instrument moderne, au point où l’on peut parler d’un transfert des pratiques d’interprétation de l’un vers l’autre. Nous avons aussi fait une synthèse de quelques sources baroques afin de vérifier dans quelle mesure les interprètes observent ces indications. Nous avons observé qu’au cours des années, le mouvement HIP a changé la définition de ce qu’est une interprétation authentique et qu’il a modifié la manière dont les flûtistes modernes dans leur ensemble interprètent la musique baroque.In this master’s thesis, we studied how the historically informed performance (HIP) movement has impacted the way flutists have approached Baroque repertoire since 1960. We analyzed recordings from five flute players with Sonic Visualiser. We used this software to generate graphical data to objectively support our observations on tempo, articulation, dynamics, and vibrato. By comparing recordings made on baroque and modern instruments, we found that in the past 20 years, flutists who are performing this repertoire on the modern flute started integrating performance practice from the baroque players in their own performance of early music. To contextualize the performance practices, we synthesized a few baroque sources to verify the extent to which flutists have respected these indications. Through the process of this research, we observed that the HIP movement has changed the definition of an authentic performance of early music and that it has modified the way modern flutists perform Baroque music.