Готові списки джерел за темами / Flutter studies

Добірка наукової літератури з теми "Flutter studies"

Автор: Grafiati
Опубліковано: 6 вересня 2023

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями

Оберіть тип джерела:

Зміст

Ознайомтеся зі списками актуальних статей, книг, дисертацій, тез та інших наукових джерел на тему "Flutter studies".

Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.

Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.

Статті в журналах з теми "Flutter studies"

1

Gabriela, STROE, and ANDREI Irina-Carmen. "STUDIES ON FLUTTER PREDICTION." INCAS BULLETIN 4, no. 1 (March 9, 2012): 115–23. http://dx.doi.org/10.13111/2066-8201.2012.4.1.12.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Khan, Abid Ali, Muhammad Arif Ashraf, Asim Shehzad, Abroon Jamal Qazi, and Imran Hayat. "Computational and experimental studies of horizontal tail flutter suppression." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 1 (August 14, 2017): 34–43. http://dx.doi.org/10.1177/0954410017725363.

Повний текст джерела
Анотація:
Flutter is an extremely violent instability that may result in catastrophic failure. Thus, flutter clearance test is one of the critical phases in qualification of an aircraft’s airworthiness. During design and development process of an aircraft, flutter problems were experienced on an aerodynamic surface (horizontal tail). In order to tackle the observed problem, a number of approaches to optimize the design for flutter speed were computationally and experimentally studied and evaluated. This paper presents and discusses the outcomes of these studies. A hybrid approach based on evaluations and design change constraints has been proposed to suppress the flutter of the horizontal tail.
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Cosio, Francisco G., Maria Löapezgil, Antonio Goicolea, Fernando Arribas, and A. John Camm. "Electrophysiologic studies in atrial flutter." Clinical Cardiology 15, no. 9 (September 1992): 667–73. http://dx.doi.org/10.1002/clc.4960150910.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Sasaki, Kenichi, Shingo Sasaki, Masaomi Kimura, Shingen Owada, Daisuke Horiuchi, Taihei Itoh, and Ken Okumura. "Electrocardiographic and Electroanatomical Studies on Flutter Waves in Typical, Counterclockwise Atrial Flutter." Journal of Arrhythmia 27, Supplement (2011): OP52_4. http://dx.doi.org/10.4020/jhrs.27.op52_4.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Lobitz, Don W. "Parameter Sensitivities Affecting the Flutter Speed of a MW-Sized Blade." Journal of Solar Energy Engineering 127, no. 4 (July 12, 2005): 538–43. http://dx.doi.org/10.1115/1.2037091.

Повний текст джерела
Анотація:
With the current trend toward larger and larger horizontal axis wind turbines, classical flutter is becoming a more critical issue. Recent studies have indicated that for a single blade turning in still air the flutter speed for a modern 35 m blade occurs at approximately twice its operating speed (2 per rev), whereas for smaller blades (5–9 m), both modern and early designs, the flutter speeds are in the range of 3.5–6 per rev. Scaling studies demonstrate that the per rev flutter speed should not change with scale. Thus, design requirements that change with increasing blade size are producing the concurrent reduction in per rev flutter speeds. In comparison with an early small blade design (5 m blade), flutter computations indicate that the non rotating modes which combine to create the flutter mode change as the blade becomes larger (i.e., for the larger blade the second flapwise mode, as opposed to the first flapwise mode for the smaller blade, combines with the first torsional mode to produce the flutter mode). For the more modern smaller blade design (9 m blade), results show that the non rotating modes that couple are similar to those of the larger blade. For the wings of fixed-wing aircraft, it is common knowledge that judicious selection of certain design parameters can increase the airspeed associated with the onset of flutter. Two parameters, the chordwise location of the center of mass and the ratio of the flapwise natural frequency to the torsional natural frequency, are especially significant. In this paper studies are performed to determine the sensitivity of the per rev flutter speed to these parameters for a 35 m wind turbine blade. Additional studies are performed to determine which structural characteristics of the blade are most significant in explaining the previously mentioned per rev flutter speed differences. As a point of interest, flutter results are also reported for two recently designed 9 m twist/coupled blades.
Стилі APA, Harvard, Vancouver, ISO та ін.
6

ILIE, Marcel, and Augustin SEMENESCU. "COMPUTATIONAL STUDIES OF AEROELASTICITY OF AIRCRAFT ENGINE TURBINE BLADE." ANNALS OF THE ACADEMY OF ROMANIAN SCIENTISTS Series on ENGINEERING SCIENCES 14, no. 2 (2022): 19–32. http://dx.doi.org/10.56082/annalsarscieng.2022.2.19.

Повний текст джерела
Анотація:
Transient blade loading limits the lifetime of aircraft engine turbine blades. Thus, accurate prediction of the unsteady aerodynamic loading and coupled fluid-structure interactions would improve the life the lifetime of the turbine blades. This study investigates the flutter instability of an axial turbine blade under unsteady aerodynamic loading. The viscous Navier-Stokes equations with the SST-kω turbulence model are employed. The results show that the flutter phenomenon causes unsteady oscillations of the aerodynamic coefficients lift and drag.
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Koch, Christopher. "Parametric whirl flutter study using different modelling approaches." CEAS Aeronautical Journal 13, no. 1 (October 6, 2021): 57–67. http://dx.doi.org/10.1007/s13272-021-00548-0.

Повний текст джерела
Анотація:
AbstractThis paper demonstrates the importance of assessing the whirl flutter stability of propeller configurations with a detailed aeroelastic model instead of local pylon models. Especially with the growing use of electric motors for propulsion in air taxis and commuter aircraft whirl flutter becomes an important mode of instability. These configurations often include propeller which are powered by lightweight electric motors and located at remote locations, e.g. the wing tip. This gives rise to an aeroelastic instability called whirl flutter, involving the gyroscopic whirl modes of the engine. The driving parameters for this instability are the dynamics of the mounting structure. Using a generic whirl flutter model of a propeller at the tip of a lifting surface, parameter studies on the flutter stability are carried out. The aeroelastic model consists of a dynamic MSC.Nastran beam model coupled with the unsteady ZAERO ZONA6 aerodynamic model and strip theory for the propeller aerodynamics. The parameter studies focus on the influence of different substructures (ranging from local engine mount stiffness to global aircraft dynamics) on the aeroelastic stability of the propeller. The results show a strong influence of the level of detail of the aeroelastic model on the flutter behaviour. The coupling with the lifting surface is of major importance, as it can stabilise the whirl flutter mode. Including wing unsteady aerodynamics into the analysis can also change the whirl flutter behaviour. This stresses the importance of including whirl flutter in the aeroelastic stability analysis on aircraft level.
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Yoshikawa, Masahiro, Kensuke Asaba, and Tomohiro Nakayama. "Causal effect of atrial fibrillation/flutter on chronic kidney disease: A bidirectional two-sample Mendelian randomization study." PLOS ONE 16, no. 12 (December 13, 2021): e0261020. http://dx.doi.org/10.1371/journal.pone.0261020.

Повний текст джерела
Анотація:
Chronic kidney disease (CKD) and atrial fibrillation are both major burdens on the health care system worldwide. Several observational studies have reported clinical associations between CKD and atrial fibrillation; however, causal relationships between these conditions remain to be elucidated due to possible bias by confounders and reverse causations. Here, we conducted bidirectional two-sample Mendelian randomization analyses using publicly available summary statistics of genome-wide association studies (the CKDGen consortium and the UK Biobank) to investigate causal associations between CKD and atrial fibrillation/flutter in the European population. Our study suggested a causal effect of the risk of atrial fibrillation/flutter on the decrease in serum creatinine-based estimated glomerular filtration rate (eGFR) and revealed a causal effect of the risk of atrial fibrillation/flutter on the risk of CKD (odds ratio, 9.39 per doubling odds ratio of atrial fibrillation/flutter; 95% coefficient interval, 2.39–37.0; P = 0.001), while the causal effect of the decrease in eGFR on the risk of atrial fibrillation/flutter was unlikely. However, careful interpretation and further studies are warranted, as the underlying mechanisms remain unknown. Further, our sample size was relatively small and selection bias was possible.
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Bandorski, Dirk, Jörn Schmitt, Claudia Kurzlechner, Damir Erkapic, Christian W. Hamm, Werner Seeger, Ardeschir Ghofrani, Reinhard Höltgen, and Henning Gall. "Electrophysiological Studies in Patients with Pulmonary Hypertension: A Retrospective Investigation." BioMed Research International 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/617565.

Повний текст джерела
Анотація:
Few studies have investigated patients with pulmonary hypertension and arrhythmias. Data on electrophysiological studies in these patients are rare. In a retrospective dual-centre design, we analysed data from patients with indications for electrophysiological study. Fifty-five patients with pulmonary hypertension were included (Dana Point Classification: group 1: 14, group 2: 23, group 3: 4, group 4: 8, group 5: 2, and 4 patients with exercised-induced pulmonary hypertension). Clinical data, 6-minute walk distance, laboratory values, and echocardiography were collected/performed. Nonsustained ventricular tachycardia was the most frequent indication (n=15) for an electrophysiological study, followed by atrial flutter (n=14). In summary 36 ablations were performed and 25 of them were successful (atrial flutter 12 of 14 and atrioventricular nodal reentrant tachycardia 4 of 4). Fluoroscopy time was 16±14.4 minutes. Electrophysiological studies in patients with pulmonary hypertension are feasible and safe. Ablation procedures are as effective in these patients as in non-PAH patients with atrial flutter and atrioventricular nodal reentrant tachycardia and should be performed likewise. The prognostic relevance of ventricular stimulations and inducible ventricular tachycardias in these patients is still unclear and requires further investigation.
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Georghiades, G. A., and J. R. Banerjee. "Flutter Prediction for Composite Wings Using Parametric Studies." AIAA Journal 35, no. 4 (April 1997): 746–48. http://dx.doi.org/10.2514/2.170.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Дисертації з теми "Flutter studies"

1

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
Стилі APA, Harvard, Vancouver, ISO та ін.
2

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 джерела
Анотація:
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.
Стилі APA, Harvard, Vancouver, ISO та ін.
3

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 джерела
Анотація:
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.
Стилі APA, Harvard, Vancouver, ISO та ін.
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 джерела
Анотація:
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.
Стилі APA, Harvard, Vancouver, ISO та ін.
5

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 джерела
Анотація:
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.
Стилі APA, Harvard, Vancouver, ISO та ін.
6

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 джерела
Анотація:
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.
Стилі APA, Harvard, Vancouver, ISO та ін.
7

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 джерела
Анотація:
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.
Стилі APA, Harvard, Vancouver, ISO та ін.
8

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 джерела
Анотація:
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.
Стилі APA, Harvard, Vancouver, ISO та ін.
9

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 джерела
Анотація:

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.

Стилі APA, Harvard, Vancouver, ISO та ін.
10

Herring, Judith Ann. "A guide to intermediate-level flute concerti." Virtual Press, 1987. http://liblink.bsu.edu/uhtbin/catkey/487502.

Повний текст джерела
Анотація:
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.
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Книги з теми "Flutter studies"

1

Drouet, Louis. 72 studies for the Boehm flute. AMsterdam: Broekmans en Van Poppel, 1994.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Schmitz, Hans-Peter. Fürstenau heute: Flötenspiel in Klassik und Romantik. Kassel: Bärenreiter, 1988.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Robison, Paula. The Paula Robison flute warmups book. Valley Forge, Pa: European American Music, 1989.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Sollberger, Harvey. Quodlibetudes: For solo flute (1988). New York, N.Y: McGinnis & Marx, 1991.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Andrews, Christina. Foundations of flute technique: Scale studies and etudes for the intermediate flutist. Chicago: Ecoutez Pub., 2001.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Bernold, Philippe. 10 ans avec la flûte: Catalogue raisonné. Paris: Cite de la musique, 2002.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Arlette, Bigett, and Institut de pédagogie musicale (France), eds. 10 ans avec la flûte: Catalogue raisonné. Paris: Institut de pédagogie musicale et chorégraphique, 1989.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Koizumi, Hiroshi. Technique for contemporary flute music: For players and composers. Japan: Schott, 1996.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Association, National Flute, ed. The flutist's handbook: A pedagogy anthology. Santa Clarita, CA: The National Flute Association, 1998.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Hériché, Robert. À propos de... la flûte. Paris: Billaudot, 1985.

Знайти повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
Більше джерел

Частини книг з теми "Flutter studies"

1

Shanthini, G., A. C. Pankaj, and M. Manjuprasad. "Flutter Reliability Studies of a Swept Back Plate." In Lecture Notes in Civil Engineering, 537–50. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-0362-3_43.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Bilpriya, S. Rajendran, P. Ashok Gandhi, and Manju George. "Prevention of Flutter Instability in Control Surface of a Test Vehicle Through Parametric Studies." In Lecture Notes in Civil Engineering, 851–64. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-55115-5_76.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Safa, Etienne, Jean-Baptiste Barreau, Ronan Gaugne, Wandrille Duchemin, Jean-Daniel Talma, Bruno Arnaldi, Georges Dumont, and Valérie Gouranton. "Digital and Handcrafting Processes Applied to Sound-Studies of Archaeological Bone Flutes." In Digital Heritage. Progress in Cultural Heritage: Documentation, Preservation, and Protection, 184–95. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-48496-9_15.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Bisagni, Jacopo. "Flutes, pipes, or bagpipes? Observations on the terminology of woodwind instruments in Old and Middle Irish." In Studia Traditionis Theologiae, 343–94. Turnhout: Brepols Publishers, 2015. http://dx.doi.org/10.1484/m.stt-eb.5.103128.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Sellet, Frédéric. "My Flute Is Bigger Than Yours: Nature and Causes of Technological Changes on the American Great Plains at the End of the Pleistocene." In Studies in Human Ecology and Adaptation, 263–79. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-64407-3_12.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Miller, John M., Mithilesh K. Das, and Douglas P. Zipes. "Typical atrial flutter." In Case Studies in Clinical Cardiac Electrophysiology, 151–70. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-323-18772-5.00021-3.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Miller, John M., Mithilesh K. Das, and Douglas P. Zipes. "Pulmonary vein isolation, rotor mapping and ablation, and flutter ablation for AF/flutter." In Case Studies in Clinical Cardiac Electrophysiology, 254–78. Elsevier, 2018. http://dx.doi.org/10.1016/b978-0-323-18772-5.00026-2.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Schnalzer, Bianca, Simone Huber, Isabella Sumerauer, Maria Preininger, Baptiste Alcalde, and Robert Mischak. "Evidence-Based Mobile Wound Application to Support Professionals in State-of-the-Art Chronic Wound Treatment." In Studies in Health Technology and Informatics. IOS Press, 2022. http://dx.doi.org/10.3233/shti220354.

Повний текст джерела
Анотація:
Background: One of the most important tasks within wound management and the basis of successful wound care is a clear and accurate nursing documentation which can be created in various ways. However, this documentation is only partially standardized mainly due to the interdisciplinarity of this task. Objectives: The goal is to overcome interdisciplinary boundaries in home care between health professionals, and to increase the patient’s motivation to actively participate in wound healing by providing consistent structure and guidance. In this paper, the development of a mobile wound documentation application is described. Methods: Comprehensive literature reviews were conducted on state-of-the-art wound documentation as well as on machine learning frameworks, databases and mobile app development technologies. Results: As a result, a mobile wound application with Flutter, SQLite and Tensorflow Lite was developed. During the development process interoperability was considered to enable future extensibility. Conclusion: Further development in respect of backend and API is planned, involving user field tests.
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Wray, Shirley H. "Oscillopsia, Nystagmus, Saccadic Oscillations, and Intrusions." In Eye Movement Disorders in Clinical Practice, 373–412. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199921805.003.0010.

Повний текст джерела
Анотація:
Nystagmus, defined as an involuntary repetitive, rhythmic to-and-fro movement of the eyes initiated by a slow drift that shifts an image off the fovea, is discussed in detail. The steps to take in evaluating nystagmus are emphasized , including the importance of close observation with the patient supine, prone, and lying on either side Central vestibular nystagmus due to disease of the central nervous system is covered fully and case studies include patients with upbeat nystagmus and with acquired pendular nystagmus.. When a saccadic eye movement takes the eye away from fixation (saccadic intrusion), a variety of saccadic oscillations can occur, in particular multidirectional saccades without an intersaccadic interval, which is diagnostic of opsoclonus; ocular flutter; or the two oscillations combined. . Two paraneoplastic syndromes illustrate these disorders , a case of ocular flutter associated with paraneoplastic encephalitis and cancer of the lung, and an infant with opsoclonus as the herald syndrome of a neuroblastoma.
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Minami, H., Y. Okuda, and S. Kawamura. "101. Experimental studies on the flutter behaviour of membranes in a wind tunnel." In Space Structures 4, 1: 935–945. Thomas Telford Publishing, 1993. http://dx.doi.org/10.1680/ss4v1.19683.0101.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.

Тези доповідей конференцій з теми "Flutter studies"

1

Nydick, Ira, Peretz Friedmann, and Xaolin Zhong. "Hypersonic panel flutter studies on curved panels." In 36th Structures, Structural Dynamics and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1995. http://dx.doi.org/10.2514/6.1995-1485.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
2

Šnábl, P., L. Pešek, P. Procházka, and V. Skála. "A new blade cascade for flutter studies." In Engineering Mechanics 2023. Institute of Thermomechanics of the Czech Academy of Sciences, Prague, 2023. http://dx.doi.org/10.21495/em2023-247.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
3

Pidaparti, R., V. Tischler, and V. Venkayya. "Flutter instability tracking for aeroelastic design optimization studies." In 41st Structures, Structural Dynamics, and Materials Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-1329.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
4

Sulaeman, Erwin, Rakesh Kapania, and Raphael Haftka. "Parametric Studies of Flutter Speed in a Strut-Braced Wing." In 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2002. http://dx.doi.org/10.2514/6.2002-1487.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
5

Miura, Toshimasa, and Naoto Sakai. "Numerical and Experimental Studies of Labyrinth Seal Aeroelastic Instability." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90427.

Повний текст джерела
Анотація:
Abstract A labyrinth seal is commonly used to decrease the flow leakage loss between rotating and static components in aero engines. It is susceptible to aeroelastic instability because of its low stiffness. The aim of this study is to clarify the physical mechanism of labyrinth seal flutter and to establish a method to predict and suppress it effectively. To achieve this, both numerical and experimental investigations are conducted using ANSYS CFX and ANSYS Mechanical. These solvers are coupled to simulate the flutter precisely. Also, to assess the accuracy of the simulation qualitatively and quantitatively, a test rig is built. In the first part of this study, the accuracy of the numerical method is confirmed for several test cases with different seal clearance variations. Both one-way and two-way fluid structure interaction (FSI) analyses are performed. Flutter inception is evaluated in detail for various pressure ratios and rotation speeds. The numerical results show reasonably good agreement with the experimental results. It is also confirmed that the aeroelastic instability is very sensitive to the seal clearance variations. These results show the same tendency as those in previous works [1–5]. In the second part of this study, this paper tries to develop a flutter suppression method without deteriorating the flow leakage performance. This is achieved by changing the seal geometry without changing the seal clearance variation. To detect the important geometric parameters, the contribution of each geometric component to aeroelastic instability is carefully analyzed. On the basis of this, the seal geometry is modified and its performance is also evaluated. The optimized labyrinth seal shows good performance in terms of flow leakage and aeroelastic stability. Through this study, a new method to suppress the flutter with low flow leakage is established.
Стилі APA, Harvard, Vancouver, ISO та ін.
6

Ricci, Sergio, Federico Fonte, Alessandro De Gaspari, Luca Riccobene, Paolo Mantegazza, Francesco Toffol, and Eli Livne. "Development of a Wind Tunnel Model for Active Flutter Suppression Studies." In AIAA Scitech 2019 Forum. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2019. http://dx.doi.org/10.2514/6.2019-2029.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
7

Botez, Ruxandra, Alin Dinu, and Lulian Cotoi. "Approximations of unsteady aerodynamic forces for closed loop flutter aeroservoelasticity studies." In 44th AIAA Aerospace Sciences Meeting and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2006. http://dx.doi.org/10.2514/6.2006-444.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
8

Zahra, Husam Abu, and Samer Zein. "A Systematic Comparison Between Flutter and React Native from Automation Testing Perspective." In 2022 International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT). IEEE, 2022. http://dx.doi.org/10.1109/ismsit56059.2022.9932749.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
9

Cavallaro, Rauno, Luciano Demasi, Rocco Bombardieri, and Andrea Iannelli. "PrandtlPlane Joined Wing: Body Freedom Flutter, Limit Cycle Oscillation and Freeplay Studies." In 56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-1184.

Повний текст джерела
Стилі APA, Harvard, Vancouver, ISO та ін.
10

Vahdati, Mehdi, George Simpson, and Mehmet Imregun. "Mechansims for Wide-Chord Fan Blade Flutter." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60098.

Повний текст джерела
Анотація:
This paper describes a detailed wide-chord fan blade flutter analysis with emphasis on flutter bite. The same fan was used with three different intakes of increasing complexity to explain flutter mechanisms. Two types of flutter, namely stall flutter and acoustic flutter, were identified. The first intake is a uniform cylinder for which there are no acoustic reflections. Only stall flutter, driven by flow separation, can exist in this case. The second intake, based on the first one, has a ‘bump’ feature to reflect the fan’s forward pressure wave at a known location so that detailed parametric studies can be undertaken. The analysis revealed a mechanism for acoustic flutter, which is driven by the phase of the reflected wave. The third intake has the typical geometric features of a flight intake. The results indicate that flutter bite occurs when both stall and acoustic flutter happen at the same speed. It is also found that blade stiffening has no effect on aero-acoustic flutter.
Стилі APA, Harvard, Vancouver, ISO та ін.
Також вас можуть зацікавити розширені добірки на тему "Flutter studies" для конкретних типів джерел:
Статті в журналах Дисертації Книги
Ми пропонуємо знижки на всі преміум-плани для авторів, чиї праці увійшли до тематичних добірок літератури. Зв'яжіться з нами, щоб отримати унікальний промокод!

До бібліографії