This work addresses the problem of thermal shock in a light water cooled nuclear reactor undergoing emergency cooling following a hypothetical loss of coolant accident. Portions of this work provide novel approaches to heat conduction problems. Moreover, the scope of this analysis is broader than that which is currently sought in industry. In the first solution to the problem, the general heat conduction equation in one dimension is solved analytically by the method of variation of parameters. The domain of the solution is the radius of the bimetallic, upper cylindrical region of the pressure vessel, The solution considers spatially and time-varying internal heat generation. The two-dimensional analysis of the problem is begun next. Assuming axisymmetric heat conduction, the steady-state profile, which exists in the pressure vessel at the time the loss of coolant accident occurs, is determined by separation of variables. This analysis is innovative because of the following: the solution is composed of four analytical solutions of the two-dimensional Poisson equation, two in cylindrical coordinates and two in the spherical coordinate system, each pair spanning media having different thermal properties. The inhomogeneous heat generation term in each of the four regions is a function of an independent variable. The eigensolutions derived for the cylindrical section are joined along the mutual boundary to the eigensolutions of the spherical regions by first imposing continuity constraints on the dependent variables and their first derivatives followed by an exploitation of the orthogonal nature of, the eigensolutions. Contrary to one-dimensional results, a two-dimensional analysis indicates that maximum temperatures do not necessarily occur at the outer insulated boundary of the pressure vessel. The results of this analysis are verified by numerical techniques and are used as the initial conditions for the two-dimensional, transient analysis that follows. The transient analysis is formulated by both finite difference and finite element techniques for the purposes of method comparison and verification of results. Each technique results in a set of linear, first order, ordinary differential equations which are solved exactly in time by matrix methods instead of the usual time stepping, numerical procedures. The merits and demerits of matrix methods used in conjunction with each numerical technique for handling the spatial variables of the problem are enumerated. The analysis considers boiling heat transfer, and results indicate axisymmetric heat flow into the lower hemispherical region has a mitigating effect on radial temperature gradients in only the lower 20% of the cylindrical region. The effect of different clad thicknesses is also discussed. / Ph. D.

麥中成. / Manuscript (cops. 2 & 3 複印本). / Thesis (M.A.)--香港中文大學硏究院語文學部. / Manuscript (cops. 2 & 3 fu yin ben). / Includes bibliographical references (leaves 26-35 (3d group)). / Mai Zhongcheng. / Thesis (M.A.)--Xianggang Zhong wen da xue yan jiu yuan yu wen xue bu. / 引言 / Chapter 1 --- 何其芳散文的外在研究 / Chapter 1.1 --- 何其芳的生平及其思想 / Chapter 1.11 --- 孤獨拘謹的童年生活 / Chapter 1.12 --- 中學時期沉溺於個人主義 / Chapter 1.13 --- 北大四年，創作大量頹思想作品 / Chapter 1.14 --- 教學三年，思想頓變 / Chapter 1.15 --- 參加抗日，遠走延安 --- p.34 / Chapter 1.16 --- 從事文學批評的文藝官 / Chapter 1.2 --- 社會環境與何其芳的散文風格　　　　　　　　　 --- p.42 / Chapter 1.21 --- 三十年代的白話文風 / Chapter 1.22 --- 翻譯文學作品的文學語言 / Chapter 1.23 --- 社會環境對何其芳散文風格的影響 / Chapter 2 --- 何其芳散文的內在研究　　　　　　　　　　　　　 --- p.70 / Chapter 2.1 --- 語法問題 / Chapter 2.11 --- 句法 / Chapter 2.111 --- 語序問題 / Chapter 2.112 --- 複合句成份的配搭及照應問題 / Chapter 2.12 --- 詞法 / Chapter 2.121 --- 累贅的詞法 / Chapter 2.1211 --- 濫用無定冠詞 / Chapter 2.1212 --- 主語、代詞的過分重複 / Chapter 2.1213 --- 「是…的」句和「是」字 / Chapter 2.122 --- 助詞運用的問題 / Chapter 2.123 --- 詞性的轉換 / Chapter 2.124 --- 虛詞的運用 / Chapter 2.125 --- 造詞 / Chapter 2.2 --- 修辭問題 / Chapter 2.21 --- 積極修辭：譬喻的運用 / Chapter 2.22 --- 消極修辭：形容詞和動詞的運用 / Chapter 2.23 --- 夾雜音譯詞及英文的句子 / Chapter 3 --- 結語 / 附註釋及參考書目

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by Saul B. Gelfand and Sanjoy K. Mitter. / On t.p. "d̳" is superscript. Cover title. / Includes bibliographical references (p. 28-29). / Research supported by the Air Force Office of Scientific Research. AFOSR 89-0276

Orientador: Adelia Bezerra de Meneses / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem / Made available in DSpace on 2018-07-25T01:46:46Z (GMT). No. of bitstreams: 1 Santos_NeliEditedos_M.pdf: 5122359 bytes, checksum: 97d8490feff8b6f24f7c383163d120d7 (MD5) Previous issue date: 1999 / Resumo: Esta dissertação pretende apresentar uma trajetória da crítica jornalística sobre Clarice Lispector, desde sua estréia, em 1943, até os anos 90, a fim de identificar alguns de seus elementos constituidores, indicar possíveis caminhos para a sua compreensão e propor parâmetros adequados para a sua inserção no conjunto da fortuna crítica clariceana. Tomando por pressuposto que a crítica jornalística pode ser um importante elemento no processo de recepção, especialmente quando propõe critérios para a interpretação das produções literárias, são comentadas algumas das respostas dadas pelos críticos ao desafio de ler Clarice Lispector e apresentá-la aos leitores / Abstract: This dissertation aims at showing how criticis found in newspapers treated Clarice Lispector's literary work, from 1943 up to the nineties, in order to identify some of the elements that consitituted such a criticism, indicate some possible ways to understand it and propose adequate parameters to insert it in the collection of Clarice Lispector's criticism fortune. Based on the supposition that criticism found in newspapers can be an important tool in the process of reception, especially when it proposes criteria to the interpretation of literary production, answers given by Clarice Lispector's critics to the so called challenge of reading and introducing her to readers are analysed. / Mestrado / Mestre em Teoria Literaria

In a composite sampling procedure initial samples (increments) are drawn from a lot and physically mixed to form composite samples. Subsamples are then taken from these composite samples and tested to determine the lot quality, usually the lot mean, μ_x. Composite sampling procedures typically are employed with bulk materials, for which high testing costs preclude estimation of μ_x using the arithmetic average of values from several individually tested increments. Because of the physical averaging that occurs when increments are mixed to form composite samples, it is possible to estimate μ_x with specified precision with greater economy using a composite sampling procedure than using a noncompositing procedure. This dissertation extends and interprets the work of Brown and Fisher on modeling procedures that involve subsampling mixtures of sampled material. Models are developed for sampling from segmented or nonsegmented lots, allowing for more than one finite composite, testing error, within-increment variability, or two subsampling stages. The result of each model is a formula expressing the variance of the estimator of μ_x in terms of model parameters. Each such formula is contrasted with the corresponding formula derived from the customarily employed random effects linear model. / Ph. D.

This thesis is an evaluation of the work of the nineteenth century economist William Edward Hearn. Attention is given primarily to Hearn’s <u>Plutology: Or the Theory of Efforts to Satisfy Human Wants</u>, but this is related to Hearn's work as a jurist and as a political theorist. The Plutology is also discussed in relation to prior and to subsequent work of others in economics. In Chapter I, Hearn is introduced as a classical political economist in the “Smithian,” as opposed to the "Ricardian," tradition. This distinction is explained, and the emergence of neoclassical or modern economics is discussed as a change in world-view. Modern economists, holding the neoclassical view, have had difficulty seeing merits of the "Smithian” approach In Chapter II, an account is given of Hearn's work and reputation. In his own lifetime, Hearn enjoyed an international reputation as an author. In addition to the. work mentioned, he wrote <u>The Government of England</u>, <u>The Aryan Household</u>, and <u>The Theory of Legal Duties and Rights</u>. He was also chancellor of the University of Melbourne and served in the Victorian legislature. The novel design of the <u>Plutology</u> is explained in Chapter III. Hearn's formula for economic activity, "Efforts to Satisfy Human Wants," supplied him with a conceptual scheme within which was found a logical place for the most notable doctrines of earlier economists. Also, Hearn's approach left him free of many doctrines now generally believed to be sterile or misleading. A separate chapter is given to Hearn's views on specific topics which can be understood as contributions even: by those. whose sympathies lie with the modern orthodoxy. For example, though presented in a different language, Hearn's theory of the firm contains the substance of the theories on that topic advanced by modern writers such as Frank H. Knight and Ronald Coase. In Chapter V, evidence is presented to support the contention that Hearn's <u>Plutology</u> influenced both Marshall's <u>Principles</u> and Jevons' <u>Theory of Political Economy</u>. Marshall was far more “Smithian” than is commonly believed. And although Jevons is known today as one of the fathers of the modern theory of value, his expressed admiration for Hearn, together with an examination of his theories of labor and of capital, suggests that an alternative interpretation of his work is in order. Chapter VI is an expansion of the implications of Hearn's restatement of what might be called the "Smithian labor theory of value.” The single-factor hypothesis is reconciled with modern views of production and distribution. Chapter VII draws from Hearn's work in both analytical and historical jurisprudence for a theory of economic institutions. The principal element in Hearn's legal theory was "duty" rather than "right"; this might be compared to the emphasis, in classical economics, given "labor" rather than "satisfactions." Hearn's legal theory ‘is useful to the modern economist with an interest in the questions raised by the “institutional economics." / Ph. D.

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Three holly cultivars, Ilex crenata, Thunb. 'Helleri' and 'Rotundifolia' and Ilex cornuta Lindl. et Paxt. 'Burfordi' were grown in 3 liter containers at 200, 300, 400 and 500 ppm nitrogen (N). Significant correlation coefficients were found between plant growth (dry wt accumulation) and both leaf N content and soil solution nitrates, while low correlation coefficients were found between soil nitrates and plant growth. Shoot growth of 'Helleri' and 'Burfordi' was not increased by N levels higher than 300 ppm while 400 ppm N was optimal for 'Rotundifolia'. The effects of 3N levels on tissue N fluctuations during a flush of growth on 'Helleri' were also studied. For all N levels, tissue N levels were shown to increase following the cessation of stem elongation until a level of tissue N was reached where a new flush of growth began. These N levels were approx the same for all N treatments. The time necessary to reach this level was dependent on the level of N added; 5 weeks for 300 ppm, 13 weeks for 150 ppm and 18 weeks for 50 ppm N. Once new growth began, tissue N levels began to decrease. The response of 'Helleri' to 15 fertilizer treatments consisting of different time and lengths was studied. Fertilizer applied during a period following the cessation of stem elongation and before the next flush resulted in greater total N and shoot growth, regardless of whether it was also applied during other weeks or not. Root growth was suppressed by 3 or more fertilizer applications, regardless of the time of application. / Ph. D.

Stand losses in temperate grasses after summer defoliation of tall canopies inspired an investigation of microenvironmental and plant responses in tall fescue. Microenvironment and regrowth of tall fescue in response to mowing managements and nitrogen rates in spring that created different canopy structures was studied. In early spring, 50 and 160 kg/ha of N were applied. Mowing managements were: clipping at 4 or 8 cm biweekly, monthly, and in late June. In late June all 6 treatments were mowed to prescribed stubble heights with a seventh unmowed check. Canopy light regimes, leaf area index, and regrowth of tillers were monitored along with soil, fair, and shoot temperatures in stubbles after the June harvest. Mowing more frequently in spring decreased canopy yields of the June harvest, but increased leaf area (LAI) of stubbles as compared to spring-accumulated canopies. High nitrogen decreased specific leaf weights (SLW) in stubble leaves and increased LAI except in spring-accumulated canopies. Increased LAI decreased light penetration and canopy temperatures. Temperatures were highest in harvested spring-accumulated stubbles with a shift of 4-10 C between unharvested and harvested stands while radiation penetration into the stubble increased from 5 to 75% of total. Some large stand losses occurred in lodged portions of harvested Spring-accumulated plots. Generally, regrowth yields were not affected by prior clipping managements. Concentration of TNC was uniformly high with all treatments. / Ph. D.