1,010 research outputs found

    Discovering Two New Solo Works for Trombone: A History, Summary, and Preparation of Frank Gulino’s Sonata No. 1: The Journey, and Joseph Buono’s Elegy for Trombone and Piano

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    This paper will serve as a guide to musicians for the preparation and performance of two recent solo compositions for trombone worthy of study and performance: Frank Gulino’s Sonata No. 1: The Journey (2019) and Joseph Buono’s Elegy for Trombone and Piano (2016). Included will be sections or chapters on the history and background of each work, biographical information about each composer, a detailed performer’s analysis of each work, exclusive interviews with the composers, and interviews with the trombonists who commissioned and/or premiered each work. Each individual interview will provide insight into the music, including information on personal inspirations and compositional processes, a focus on emotional content, thematic elements, and recommendations on preparing each piece. Recital programming suggestions have also been included. The pieces examined warrant serious study and performance, and this paper will inform future preparations of these two works

    An Empirical Investigation of Factors Influencing Knowledge Management System Success

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    Knowledge has been viewed as a critical component for organizations. Consequently, organizations implement Knowledge Management Systems (KMSs) to seek competitive advantages, but they may encounter mixed results. This research draws on previous information system and knowledge management system success-related literature and selects eight factors that are believed to be critical for the successful implementation of a KMS. These factors were derived through a literature search of current KMS success-related literature. The purpose of this study is to identify factors that could have a clear influence on the development and implementation of KMSs. The study presents the empirical examination of a theoretical model of KMS success for predicting system use by law enforcement officers. The research findings were accomplished through a validated questionnaire that surveyed 10 law enforcement officers from various agencies. These results contribute to the literature by empirically supporting the hypothesized relationships between identified success factors and KMS success. Though limited in sample size, this research can serve as a foundation for future studies, which can help identify other factors critical for KMS success. The comprehensive model can be used to undertake further research and thus add value to knowledge management system-based literature. In addition to its theoretical contributions, the study also presents important practical implications through the identification of specific infrastructure capabilities leading to KMS success

    The effect of pressure prehydration on the strength of hydraulic cement concrete

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    It appears that the rapidity of curing and the degree or ultimate strength of concrete can be influenced by both chemical and physical factors. The main function of the physical factors involved seems to be the creating of a more intimate combination of the cement and water which are the active ingredients. For example, finer grinding of the cement would present more surface area to the water; the application of heat would decrease the amount of surface tension of the water, in addition to speeding the chemical reaction, steam under pressure would force water into the porous particles of cement; and the retaining of water in the mix by protecting it from evaporation would insure a more complete hydration. It would logically follow that the application of pressure to force water into the cement particles would produce a more intimate combination of cement and water. The purposes of this investigation are as follows: (1) To determine if the use of pressure to force water into the cement particles will accelerate the curing of concrete. (2) To determine the optimum degree of pressure to be applied for a three-minute period. (3) To determine if the accelerated curing will yield a concrete which has a higher ultimate strength after a reasonable period. Tests of Set I are concerned with phases (1) and (2). Tests of Set II are a verification of the results of tests of Set l, under conditions of more rigid control. Tests of Set III performed in connection with phase (3). --Purpose and Object of Investigations, pages 4-5

    Biology, ecology, control and management of the invasive Indo-Pacific lionfish: An updated integrated assessment

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    Venomous Indo-Pacific lionfish (Pterois miles and P. volitans) are now established along the Southeast U.S.A. and parts of the Caribbean and pose a serious threat to reef fish communities of these regions. Lionfish are likely to invade the Gulf of Mexico and potentially South America in the near future. Introductions of lionfish were noted since the 1980s along south Florida and by 2000 lionfish were established off the coast of North Carolina. Lionfish are now one of the more numerous predatory reef fishes at some locations off the Southeast U.S.A. and Caribbean. Lionfish are largely piscivores that feed occasionally on economically important reef fishes. The trophic impacts of lionfish could alter the structure of native reef fish communities and potentially hamper stock rebuilding efforts of the Snapper –Grouper Complex. Additional effects of the lionfish invasion are far-reaching and could increase coral reef ecosystem stress, threaten human health, and ultimately impact the marine aquarium industry. Control strategies for lionfish are needed to mitigate impacts, especially in protected areas. This integrated assessment provides a general overview of the biology and ecology of lionfish including genetics, taxonomy, reproductive biology, early life history and dispersal, venom defense and predation, and feeding ecology. In addition, alternative management actions for mitigating the negative impacts of lionfish, approaches for reducing the risk of future invasions, and directions for future research are provided

    The critical theory and literary practice of Joseph Conrad

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    This item was digitized by the Internet Archive. Thesis (Ph.D.)--Boston UniversityJoseph Conrad was not only a fascinating personality and a highly gifted novelist, but also a shrewd and discerning critic of his own and other men's works. It is the purpose of this study to abstract and arrange his critical theory in order to point out a generally unsuspected ability in Conrad, and to contribute to a better understanding of his novels. Since nearly everything that an author writes is in a sense an index to the man himself, it was felt necessary, in reconstructing Conrad's critical theory, to read not only his essays and letters, but all of his fiction. It was found useful to read, also, everything of importance which has been written about him, in order to check and illuminate the present writer's own estimate. This study attempts to cull out all the literary theorizing from Conrad's writings and arrange them, in a coherent fashion, to observe the fundamental principles underlying his criticism, to check his theory against his actual literary practice, to evaluate his critical ideas, and to place him among the critics of his generation. The principal loci critici in Conrad are the prefaces to his novels, where he is frank, compact, and thoughtful; his letters, where he is informal and sometimes hasty; his autobiographical books, especially A Personal Record, Notes on Life and Letters, and The Mirror of the Sea; his novels, where one can see something of his philosophical bent; and miscellaneous introductions to and appreciation of other men's books. In order to furnish a background for Conrad the critic, this paper describes briefly the literary scene in England from 1894-1924, with special reference to the English novel and English criticism. As far as literary criticism is concerned, there is a curious lack of direction and purpose in this period, an eclectic character, a general British distrust of ideas regarding the arts, a dependence upon personal tastes rather than upon critical principles, and a certain measure of insularity. Conrad's personal background is also discussed: his Polish nationality, his informal education, his life as a mariner, the transition from seaman to author, his naturalization as an Englishman, his English friends, his early literary tribulations. The effect of these forces on his character and general literary philosophy is treated briefly. Very early in his writing career Conrad felt the necessity of erecting for himself a theory of art, and in the preface to The Nigger of the Narcissus is his first important manifesto. The theory which he finally evolved was not a particularly abstruse or esoteric one, but for him it satisfactorily bulwarked the judgments which he made in literary matters. That theory is gathered from all sources by the present writer, and the material is arranged under five heads: Truth in Art, Restraint in Art, Imagination in Art, Reason and Reflection in Art, Morality and Special Purpose in Art. Having outlined Conrad's general, comprehensive theories, the author then discusses Conrad's "practical" criticism. Most of this section is devoted to Conrad's theory of what makes a good novel, and there is considerable analysis of Conrad's own novels in order to determine the extent to which he followed his own theory. The main topics are: The General Aim of the Novelist, Theory of Plot Structure, Theory of Setting and Atmosphere, Theory of Character-Drawing, and Theory of Style. Brief mention is made of Conrad's theory of the drama. His literary enthusiasms and aversions are next described. These are not only examples of his criticism, but a record of the men who interested him as he formed his own technique. The list includes Henry James, Stephen Crane, Daudet, Maupassant, Anatole France, Turgeniev, Dostoievsky, and various other writers from Chaucer to his own day. The concluding pages are intended to show Conrad's prevailing critical attitudes and prepossessions, and to place him among the critics of the day. The author devotes some detail to Conrad's empiricism, his impressionism, and his romanticism. Romanticism is defined as carefully as possible, and then various romantic elements in Conrad's critical theory are pointed out, the writer's conclusion being that despite his scorn of particular schools and dogmas in criticism, Conrad's prevailing critical tendencies are those of the romantics.https://archive.org/details/criticaltheoryli00pot

    Mining of submerged shell deposits: history and status of regulation and production of Florida industry

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    (55pp.

    Computational Complexity in Electronic Structure

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    In quantum chemistry, the price paid by all known efficient model chemistries is either the truncation of the Hilbert space or uncontrolled approximations. Theoretical computer science suggests that these restrictions are not mere shortcomings of the algorithm designers and programmers but could stem from the inherent difficulty of simulating quantum systems. Extensions of computer science and information processing exploiting quantum mechanics has led to new ways of understanding the ultimate limitations of computational power. Interestingly, this perspective helps us understand widely used model chemistries in a new light. In this article, the fundamentals of computational complexity will be reviewed and motivated from the vantage point of chemistry. Then recent results from the computational complexity literature regarding common model chemistries including Hartree-Fock and density functional theory are discussed.Comment: 14 pages, 2 figures, 1 table. Comments welcom

    Biology and ecology of the invasive lionfishes, Pterois miles and Pterois volitans

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    The Indo-Pacific lionfishes, Pterois miles and P. volitans, are now established along the U.S. southeast coast, Bermuda, Bahamas, and are becoming established in the Caribbean. While these lionfish are popular in the aquarium trade, their biology and ecology are poorly understood in their native range. Given the rapid establishment and potential adverse impacts of these invaders, comprehensive studies of their biology and ecology are warranted. Here we provide a synopsis of lionfish biology and ecology including invasion chronology, taxonomy, local abundance, reproduction, early life history and dispersal, venomology, feeding ecology, parasitology, potential impacts, and control and management. This information was collected through review of the primary literature and published reports and by summarizing current observations. Suggestions for future research on invasive lionfish in their invaded regions are provided

    High Viral Diversity and Mixed Infections in Cerebral Spinal Fluid From Cases of Varicella Zoster Virus Encephalitis.

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    Background Varicella zoster virus (VZV) may cause encephalitis, both with and without rash. Here we investigate whether viruses recovered from the central nervous system (CNS; encephalitis or meningitis) differ genetically from those recovered from non-CNS samples. Methods Enrichment-based deep sequencing of 45 VZV genomes from cerebral spinal fluid (CSF), plasma, bronchoalveolar lavage (BAL), and vesicles was carried out with samples collected from 34 patients with and without VZV infection of the CNS. Results Viral sequences from multiple sites in the same patient were identical at the consensus level. Virus from vesicle fluid and CSF in cases of meningitis showed low-level diversity. By contrast, plasma, BAL, and encephalitis had higher numbers of variant alleles. Two CSF-encephalitis samples had high genetic diversity, with variant frequency patterns typical of mixed infections with different clades. Conclusions Low viral genetic diversity in vesicle fluid is compatible with previous observations that VZV skin lesions arise from single or low numbers of virions. A similar result was observed in VZV from cases of VZV meningitis, a generally self-limiting infection. CSF from cases of encephalitis had higher diversity with evidence for mixed clade infections in 2 cases. We hypothesize that reactivation from multiple neurons may contribute to the pathogenesis of VZV encephalitis
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