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Three Attempts at Time Travel is a piece for wind ensemble that is approximately ten minutes in length. It consists of a brief introduction and three continuous movements based on the same starting material. It is semi-programmatic, but it is not an attempt to depict a specific narrative. Rather, it portrays a scenario involving time travel. The concept of the piece begins with a person who uses a time machine to travel back to a certain point in time to change the result of an event in the their own life. During the piece, the person goes back to the same starting point three times with each “restart” resulting in a different outcome. On the final restart, a positive resolution is reached, but it is ultimately a conflicted ending because it is not the ending that the time traveler was aiming for. At the end of the introduction and each of the first two movements, a “time machine” motive consisting of: a Mahler hammer, a concert bass drum, a drum set, a thunder sheet, a suspended cymbal and a triangle occurs to signal the return to the original point in time.

The transient flow in pipe networks is represented by a pair of quasi-linear hyperbolic partial differential equations. The method of characteristics is used to transform these equations to a set of ordinary differential equations, which are then solved, by a first order finite difference technique using suitable boundary conditions. The main purposes of these investigations are: 1) To derive suitable boundary conditions or boundary condition equations for valves, sprinklers, surge tanks and air chambers, and 2) To investigate the effect of these boundary conditions on the transient flow in pipe systems. Several numerical examples are solved on the digital computer using the method of characteristics. The results are compared with those obtained by the graphical method. Although in this thesis the developed boundary conditions are used to study the transient response of the irrigation pipe systems, the boundary conditions, without any modification, can be used to determine the transient conditions in water supply pipe networks or in pipes carrying other liquids. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

This diploma thesis is concerned with design and proposal of parameters of drop hammer Davon for crushing of steel reinforced concrete panels with weight of the ram 5 t. The main topic is an emergency condition when there is no crushed material between ram and anvil. The design is established by simulation of an impact by finite element analysis with respect to required ground bearing capacity.

This thesis provides a comprehensive look at water hammer with an emphasis on home plumbing systems. The mathematics of water hammer are explained, including the momentum and continuity equations for conduits, system construction, and the four-point implicit finite difference scheme to numerically solve the problem. This paper also shows how the unsteady momentum and continuity equations can be used to solve water distribution problems instead of the steady-state energy and continuity equations, along with the examples problems which show that an unsteady approach is more suitable than the standard Hardy-Cross method. Residential plumbing systems are examined in this paper, household fixtures are modeled for their hydraulic functions, and several water hammer simulations are run using the Water Hammer and Mass Oscillation program (WHAMO). It is determined from these simulations that the amount of air volume in the system is a key factor in controlling water hammer. Abnormal pump operation is clearly explained including a description of the four quadrants and eight zones of operation as well as the mathematics and a numerical scheme for computation. Low pressures caused by transients can lead to intrusion and contamination of the drinking water supply. Several scenarios are simulated using the WHAMO program and cases are provided in which intrusion occurs. From the intrusion scenarios, key factors for intrusion to occur during transients include the starting energy in the system, the magnitude of the transient, the hydraulics of the intrusion opening, and the external energy on the pipe (the level of the groundwater table). A primer for using WHAMO is provided as an appendix as well. / Master of Science

This text is open to all interested members of the general public as well as with a narrow range of educational materials for teachers and athletic trainers in secondary schools, sports schools, athletics, etc. The work includes sections on the history of all the hammer throw.

A new closed-loop frequency-domain model is developed to incorporate the water hammer effect with pump rotordynamics, in order to investigate the sub-synchronous instability problem observed in a field pump. Seal flow-rate perturbations due to eccentricity are calculated from Soulas and San Andres's seal code. A complete transfer function matrix between rotor motion and reaction force due to pressure perturbation is developed in detail. Stability analysis with transfer-function'add-in' modules is conducted in XLTRC2. Seal clearances and the reaction force angle are found to be important in shifting natural frequencies and damping. The sub-synchronous instability observed in field is duplicated successfully with double-clearance seals.

Johann Wolfgang von Goethe’s West-östlicher Divan [West-Eastern Divan], which emerged from the author’s interest in love poems of the fourteenth-century classical Persian poet Hafez, was the inspiration for this thesis. The overwhelmingly negative appraisal of the first translation of Hafez’s entire Divan into German by Joseph Freiherr von Hammer Purgstall, which was used by Goethe in the composition of his own poems, sparked its research questions: How can the errors in Joseph von Hammer Purgstall’s translation of Hafez’s Divan be explained, and how did these inconsistencies affect Goethe’s understanding of Hafez’s poems? Despite contention about the accuracy of Hammer’s version of Hafez, the translation inspired Goethe, who, feeling so much affinity for Hafez as to call him his ‘twin brother’, soon began to write poetry imitating Hafez’s style in the process of cultivating his growing fascination for this classical Persian love poetry. The thesis draws connections between the Hafezian elements of the original Divan and their reproduction in Goethe’s cycle of poems by analyzing a selection of poems from Hammer’s translation, considering Hammer’s role as mediator, as well as comparing with these a selection of Hafez-inspired poems from Goethe’s West-östlicher Divan. To this end, chapter one sets Hafez into the historical and artistic context of Persian poetry and introduces the formal aspects of Hafez’s primary lyrical form, the ghazal. In this it focuses especially on technical aspects of rhyme and complicating elements such as the formal consideration of unity and the contextual consideration of mystical allusions. Further, this chapter familiarizes the reader with essential features of the linguistic and rhetorical peculiarities and traditions of the Persian language, as well as the dramatis personae of Hafez’s Divan. The analysis of Hammer’s translations in the second chapter demonstrates both his successful renderings as well as his occasional deviations from the original, while addressing the difficulties he faced in transferring the linguistic peculiarities of the original to the target language. It also reviews the extent to which Hafez’s philosophy remained intact in his version. The third chapter focuses on the poems of Goethe’s West-östlicher Divan in light of both Hammer’s translation and Hafez’s original. Taking about thirty poems into account, this chapter shows that Goethe’s mastery in composing Hafez-inspired poems gives the reading audience an understanding of the poetry of that classical Persian figure without needing to read or understand the original text and it argues that the poems of his West-östlicher Divan enliven Hafezian literary patterns in the minds of readers who know the Persian poet and make them understandable for the uninitiated westerner. The analysis further elucidates how Goethe overcame the weaknesses in Hammer’s version to reconstruct the fundamentals of Hafez’s message.

Johann Wolfgang von Goethe’s West-östlicher Divan [West-Eastern Divan], which emerged from the author’s interest in love poems of the fourteenth-century classical Persian poet Hafez, was the inspiration for this thesis. The overwhelmingly negative appraisal of the first translation of Hafez’s entire Divan into German by Joseph Freiherr von Hammer Purgstall, which was used by Goethe in the composition of his own poems, sparked its research questions: How can the errors in Joseph von Hammer Purgstall’s translation of Hafez’s Divan be explained, and how did these inconsistencies affect Goethe’s understanding of Hafez’s poems? Despite contention about the accuracy of Hammer’s version of Hafez, the translation inspired Goethe, who, feeling so much affinity for Hafez as to call him his ‘twin brother’, soon began to write poetry imitating Hafez’s style in the process of cultivating his growing fascination for this classical Persian love poetry. The thesis draws connections between the Hafezian elements of the original Divan and their reproduction in Goethe’s cycle of poems by analyzing a selection of poems from Hammer’s translation, considering Hammer’s role as mediator, as well as comparing with these a selection of Hafez-inspired poems from Goethe’s West-östlicher Divan. To this end, chapter one sets Hafez into the historical and artistic context of Persian poetry and introduces the formal aspects of Hafez’s primary lyrical form, the ghazal. In this it focuses especially on technical aspects of rhyme and complicating elements such as the formal consideration of unity and the contextual consideration of mystical allusions. Further, this chapter familiarizes the reader with essential features of the linguistic and rhetorical peculiarities and traditions of the Persian language, as well as the dramatis personae of Hafez’s Divan. The analysis of Hammer’s translations in the second chapter demonstrates both his successful renderings as well as his occasional deviations from the original, while addressing the difficulties he faced in transferring the linguistic peculiarities of the original to the target language. It also reviews the extent to which Hafez’s philosophy remained intact in his version. The third chapter focuses on the poems of Goethe’s West-östlicher Divan in light of both Hammer’s translation and Hafez’s original. Taking about thirty poems into account, this chapter shows that Goethe’s mastery in composing Hafez-inspired poems gives the reading audience an understanding of the poetry of that classical Persian figure without needing to read or understand the original text and it argues that the poems of his West-östlicher Divan enliven Hafezian literary patterns in the minds of readers who know the Persian poet and make them understandable for the uninitiated westerner. The analysis further elucidates how Goethe overcame the weaknesses in Hammer’s version to reconstruct the fundamentals of Hafez’s message.

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