published_or_final_version / Fine Arts / Master / Master of Philosophy

published_or_final_version / Chinese / Doctoral / Doctor of Philosophy

In this thesis we describe two instances of the nonlinear interaction between a fluid and an elastic solid to mimic or explain some phenomenon seen in nature. We focus on the phenomena of singing of small song birds and swimming of small fish. Song birds show a versatile range of tones and compositions that have highly complex spectral structure, while fish cut through water with amazing ease. The complexity of the Navier Stokes Equations that describe the fluid coupled with large deformation elasticity equations, makes analytic attempts intractable. Hence experiments were carried out with simple physical models to explain these observations. In the first case a cylindrical elastic tube (2.5cm long, 2.5mm diameter) was used to model the vocal organ, the syrinx, of a song bird. Muscle action was mimicked using a linear motor that implemented a squeezing action and the action of the lungs was modeled by a constant source of air flow. The combined fluid-elastic system behaved like a nonlinear dynamical system and produced sound under certain conditions of external parameters. Moreover the structure of the sound created depended sensitively on the control parameters, which in this case was dominated by the position of the linear motor. The motor was dynamically controlled to produce a range of songs from simple tonal ones of the Vireo to the complex chaotic songs of the Zebra Finch. In the second instance, a cantilever (5cm long, 1cm wide)suspended between and driven by magnetic coils arranged in an anti-Helmholtz configuration, was used to mimic the dynamics of the caudal fin of a small fish. Three different gaits were observed as a function of the control parameter, the drive frequency. One of these gaits maximized thrust and hydrodynamic efficiency, and velocities unto 6 body lengths per second were measured. / Engineering and Applied Sciences

published_or_final_version / abstract / toc / Chinese Historical Studies / Master / Master of Arts

published_or_final_version / Chinese / Master / Master of Philosophy

published_or_final_version / Chinese / Master / Master of Philosophy

Spirituality – is a personality formation foundation. That why spiritual values formation is a very important pedagogic problem. Spiritual values basis are formed in the childhood. That is why, it is very important purposefully influence person’s spiritual formation in his early school age. The opportunities to influence pupils’ spiritual values system organizing educational process, choosing repertoire, applying different song performances at the music lessons are examined in the current Master thesis. Object: third form song repertoire as a pupil’s spiritual values system’s element. Purpose: to examine the opportunities of the song repertoire’s to influence third form pupil’s spiritual values system. The researches that had been made confirmed the hypothesis, that the songs, sang during the lesson, can influence pupil’s spiritual values system, if they suit educated individuals interests and are creatively valuable. Spiritual values system is examined in the current paper; musical composition-song like a value and like an element, which could influence pupils’ esthetic, ethnic, national, emotional, moral feelings that stipulate pupils’ spiritual formation; 8-10 years old pupils’ psychophysical features, their typical and actual activity is examined as well. Current research reveals pupils’ musical activity peculiarities: their interest towards the songs themes, singing process, song genres, song performance forms, opportunities to express themselves. Summarizing pupils’... [to full text]

Darbo tikslas - sukurti balsavimu grįstų konkursų vertinimų (pvz. Eurovizijos dainų konkursas, angl. Eurovision Song Contest) internetinę programą, kurioje būtų taikomas dinaminis draudimų sąrašas (tabu list), suteiksiantis galimybę objektyviau vertinti konkurso dalyvius. Su pasirinktais įrankiais buvo sukurta funkcionuojanti internetinė taikomoji programa, skirta Eurovizijos dainų konkursui, kurioje taikomas dinaminis draudimų sąrašas. Darbas yra patalpintas internete šiuo adresu. http://ik.su.lt/~vitpau/. / The aim - to create a voting competition-based assessments (such as the Eurovision Song Contest), an online program, which is a dynamic list of prohibitions (taboo list) which provides an objective assessment of the tenderers. With selected tools were designed for operation of the web application for the Eurovision song contest with a dynamic list of prohibitions. Job are posted online at http://ik.su.lt/~vitpau/.

Magistro darbe nagrinėjamas dainų švenčių ugdomasis vaidmuo. Pedagoginė problema aktuali tuo, kad visais Lietuvos gyvavimo tarpsniais Dainų šventės buvo kultūrinis vyksmas, skatinantis moderniosios ir archajiškos kultūros bendravimą ir sintez��, atspindintis siekius formuoti visuomenės narių pasaulėjautą, kelti jų muzikinį bei kultūrinį lygį. Deja, Lietuvai dar priklausant Tarybų Sąjungai, Dainų šventėse pradėjo skambėti „lengvesnio” žanro muzika, ėmė nykti muzikinis ir tautinis savitumas, jos ėmė virsti eiliniu masiniu muzikiniu koncertu. Repertuaras kokybine prasme sumenko, nes kompozicijos ėmė prarasti individualumą, joms kurti pasitelkiamos kompozicinės technikos, būdingos pop kultūrai, kuri individualybes niveliuoja. Nors Dainų šventėse skambančiuose kūriniuose pasitaiko sudėtingų ritminių, melodinių figūrų, dainoms kurti parenkami kokybiški, meniški literatūriniai tekstai, tačiau visapusiškas muzikinis ugdymas daugumoje atvejų nevyksta. Tyrimo objektas – Lietuvos dainų švenčių choro repertuaras, jo poveikis dainininkų muzikos suvokimui, jų meninės kultūros ugdymui. Tyrimo tikslas – išsiaiškinti kaip dainų švenčių repertuaras veikia dainininkų muzikinį ugdymąsi. Darbe analizuojamas Dainų švenčių repertuaras, jo poveikis dainininkų tolesniam muzikiniam tobulėjimui ir ugdymuisi, aiškinamasi kaip, parenkant ir kuriant kūrinius dainų šventėms, pasiekti aukštesnį dainininkų muzikinio ugdymosi lygį. Siekiant atskleisti dainų švenčių repertuaro poveikį dainininkams buvo... [toliau žr. visą tekstą] / This master thesis analyzes the educational role of Song festivals. The pedagogical problem is relevant, since during all times in Lithuania, Song festivals have been a cultural process, encouraging communication and synthesis of both: modern and archaic culture, reflecting the aim to form the outlook and world perception of society members, as well as to raise their cultural and musical level. Unfortunately, already when Lithuania was under the rule of the Soviet Union, the music of a “lighter” genre started being played at Song festivals: the national musical distinction began to vanish and Song festivals themselves started transforming into an ordinary mass musical concert. The quality of Song festivals’ repertoire has declined, due to the loss of individuality in compositions: they started being created by using compositional techniques, characteristic to pop culture, which actually cause the loss of individualities. Although Song festivals is still the place, where the compositions with complex melodies and rhythmical figures are being performed, and high quality artistic literary texts are chosen for creating songs, in the majority of cases educational approach is missing. The object of research is the choir repertoire in Lithuanian Song festivals, its impact on the singers’ musical perception and education of their artistic culture. The goal of the research is to ascertain the influence of Song festivals’ repertoire on the musical education of singers. The thesis... [to full text]

There has been a recent paradigm shift in the study of animal communication from examining interactions as dyads to considering interactions as occurring in a communication network. The dawn chorus of songbirds, a striking acoustic phenomenon, provides an ideal opportunity to study network communication because multiple singers are within range of each other, permitting eavesdropping by both males and females. I used a 16-microphone Acoustic Location System (ALS) to simultaneously record and analyse the dawn chorus in a population of black-capped chickadees (Poecile atricapillus) breeding in eastern Ontario. Males frequency-match neighbours 24% of the time at dawn, more often than expected by chance or during daytime singing interactions. The amount of matching between males from different over-wintering flocks is significantly greater than between flockmates. Males of the same winter dominance rank match significantly more than do males of disparate ranks. Male black-capped chickadees are interacting vocally with neighbours at dawn, using the dawn chorus to mediate social relationships in ways that suggest useful information is available to the network of male and female receivers. Matching levels are not related to distance between opponents. However, males with non-fertile mates move over larger areas while chorusing and are further from their nest than males with fertile mates, suggesting dawn mate guarding. Males with non-fertile mates spend more of their chorus near boundaries with fertile neighbours than non-fertile neighbours possibly positioning themselves to facilitate eavesdropping by fertile females. Male chickadees of high and low winter social rank do not differ in either the size of their communication network, or the way they use their songs when interacting with neighbours. Males match multiple neighbours both sequentially and simultaneously. Simultaneous matching is most often the result of a former flockmate joining an interaction between two males who had been in different winter flocks. High-ranked males join the interactions of their lower-ranked flockmates, preferentially when those males are matching other high-ranked males. The dawn chorus is an interactive communication network in which all males participate and is characterized by interactions between multiple senders and receivers with males eavesdropping on interactions in which they are not involved. / Thesis (Ph.D, Biology) -- Queen's University, 2008-09-17 15:07:56.276