冒现的文学——当代美国华裔文学述论

当代美国华裔文学应该从 2 0世纪 70年代算起 ,而发展到 1990年代 ,则出现了一个转折点 ,也标志着华裔文学的创作进入了一个全新的时代。“冒现的文学”这一概念是针对新兴的文学而提出的。在冒现的文学中 ,总是充满了令人惊奇的内容 ,而且还在不断向霸权挑战。惟有当代华裔文学才真正触及到了沉淀在华裔中的矛盾和冲突。本文依据“冒现的文学”的概念 ,对当代美国华裔文学进行简单的梳理的总结 ,探讨当代美国华裔文学兴盛的原委 ,认为当代美国华裔文学在经历了发展后 ,正在进一步走向成熟。

Corrosion behavior of Hastelloy C22 coating produced by laser cladding in static and cavitation acid solution

The Hastelloy C22 coatings on Q235 steel substrate were produced by high power diode laser cladding technique. Their corrosion behaviors in static and cavitation hydrochloric, sulfuric and nitric acid solutions were investigated. The electrochemical results show that corrosion resistance of coatings in static acid solutions is higher than that in cavitation ones. In each case, coating corrosion resistance in descending order is in nitric, sulfuric and hydrochloric acid solutions. Obvious erosion-corrosion morphology and serious intercrystalline corrosion of coating are noticed in cavitation hydrochloric acid solution. This is mainly ascribed to the aggressive ions in hydrochloric acid solution and mechanical effect from cavitation bubbles collapse. While coating after corrosion test in cavitation nitric acid solution shows nearly unchanged surface morphology. The results indicate that the associated action of cavitation and property of acid solution determines the corrosion development of coating. Hastelloy C22 coating exhibits better corrosion resistance in oxidizing acid solution for the stable formation of dense oxide film on the surface.

Flow stress prediction of Hastelloy C-276 alloy using modified Zerilli−Armstrong,Johnson−Cook and Arrhenius-type constitutive models

To better understand the hot deformation behaviors of Hastelloy C-276 alloy under elevated temperatures,hot tensile tests were carried out in the temperature range of 1223−1423 K and the strain rate range of 0.01−10 s^−1,respectively.Based on the modified Zerilli−Armstrong,modified Johnson-Cook,and strain-compensated Arrheniustype models,three constitutive equations were established to describe the high-temperature flow stress of this alloy.Meanwhile,the predictability of the obtained models was evaluated by the calculation of correlation coefficients(r)and absolute errors(Δ),where the values of r for the modified Zerilli−Armstrong,Johnson−Cook,and Arrhenius-type constitutive models were computed to be 0.935,0.968 and 0.984,and the values ofΔwere calculated to be 13.4%,10.5%and 6.7%,respectively.Moreover,the experimental and predicted flow stresses were compared in the strain range of 0.1−0.5,the results further indicated that the obtained modified Arrhenius-type model possessed better predictability on hot flow behavior of Hastelloy C-276.

Microstructure and mechanical properties of interface between laser cladded Hastelloy coating and steel substrate

In order to improve the corrosion resistance of carbon steel,Hastelloy coatings were prepared on E235steel substrate by ahigh power diode laser with laser scanning speeds of6and12mm/s,respectively.The interface between the coating and substratewas firstly exposed by dissolving off the substrate.Its microstructure,composition and mechanical properties were systemicallystudied.Special“edges”along the grain boundary were found at coating/substrate interface.These“edges”consisted of intergranularcorrosion area and real grain boundary.The interface of coating mainly displayed austenite structure ascribed to the rapidsolidification as well as the dilution of Ni during preparation.Additionally,Hastelloy coating and its interface prepared at the speedof12mm/s showed higher hardness than that prepared at the speed of6mm/s.Grain boundaries had higher friction coefficient thangrains at both coating/substrate interfaces.Moreover,the interface at higher laser scanning speed exhibited smaller grains,lowerdilution rates of Ni and Fe as well as a better tribological property.

Elemental micro-segregation characteristic of fiber laser welded Hastelloy C-276 sheet

The elemental micro-segregation characteristic within the weld zone for ytterbium fiber laser welded Hastelloy C-276sheet was investigated. The analysis of segregation ratio and equilibrium distribution coefficient of elements, determined throughEDS data, indicate the reduction in micro-segregation of elements compared with the previous reported literatures for laser weldedHastelloy C-276. High melting efficiency of ytterbium fiber laser, reduction in the amount of linear heat input, and high cooling rateof the mushy zone lead to the reduction in micro-segregation. The melting efficiency of ytterbium fiber laser for welding of HastelloyC-276 of 64% is higher than that （48%） of conventional welding methods. High melting efficiency leads to the reduction in the linearheat input required for welding. Hence, in the present investigation, the same was found to substantially reduce as compared to theprevious reported literature. The cooling rate from liquidus temperature to solidus temperature at the weld centerline was found to bein the order of 10^3℃/s. Cellular dendritic substructure that constituted for lower micro-segregation was formed at the weldcenterline.

Quentin Skinner＇s ＂Rhetorical Turn＂ and the Chances for Political Thought

Quentin Skinner＇s work since his turn to rhetoric has not been extensively discussed. My thesis is that with this turn Skinner has invented another novelty in the study of political thought, by including the analysis of the rhetoric of debating pro et contra among political agents as sources of political thought. The exemplary institution for such debates is the Westminster Parliament, and Skinner extends the analysis of the rhetorical culture of English Renaissance to studies on parliamentary debates. Here I am first comparing Skinner＇s The Foundations of Modern Political Thought and Reason and Rhetoric in the Philosophy of Hobbes in their relationship to rhetoric. Subsequently I discuss Skinner＇s comments on English parliamentary debates, including his recommendation to read Hobbes＇s Leviathan ＂as a speech in Parliament.＂ Reason and Rhetoric has inspired valuable studies on English Renaissance political rhetoric, shortly discussed here. For the understanding of the distinct parliamentary variety of deliberative rhetoric, I refer to the formation of a specific parliamentary procedure and to procedural tracts from sixteenth- and seventeenth-century Westminster, which among others create a parliamentary vocabulary and rules for conducting and regulating parliamentary debates. The parliamentary procedure institutionalizes the principle of in utramque partem disputare, central in Skinner＇s rhetorical studies. By this manner we can re-activate the link between political thought and parliamentary studies as well as explicate a dissensual alternative to Jiirgen Habermas＇s views on the political thought studies and parliamentary debates.

The Maghrebian Scholarship and the Development of Muslim Intelligentsias in Sub-Saharan Africa： A Case Study of the Central Bilad al-Sudan

Central Bilad al-Sudan refers to the areas of the ancient Hausa states, and the domains of the ancient Kanem Bornu. As a result of the aged long commercial, cultural, and religious linkages between North Africa and the Central Sudan, one finds so many things in common among the two regions in dress, diets, cultural traits, as well as educational and religious practices. The extent of influence of the North African region on the individual and communal lives of the central Sudan has been extraordinarily great. The central Sudan is one of the most Islamized areas of West Africa, and Arabic language is second language to the Muslim communities in domestic and public spheres. And as a result of the entrenchment of Islam among the people due to the activities of North African scholars and traders the area became the hub of Islamic scholarship. The intellectual history of the Central Bilad al-Sudan cannot be complete without the mention of an Algerian scholar, Muhammad ibn Abd-A1-Kareem al-Maghili who in addition to his scholarly influence took appointment as Special Adviser in Kano in the 1460s. The same could be said of an Egyptian prolific writer, Jalal al-Deen al-Suyuti, who settled in Katsina and Gobir and also took the appointment of Grand Qadi in Katsina in the 15th century. Similarly, books of Sanhaja scholars, Shinqit Ulama＇a, as well as Spanish-Andalusian scholars via Morocco were made available and widely studied in this part of Muslim world. The combination of the activities of such scholars, literature, and learning tradition were responsible lbr the growth and development of Muslim intelligentsia in the central Bilad al-Sudan since the earliest time, and the influence continues to date. Thus this paper aims at examining the phenomenon, primarily by assessing the influence of scholars, literature, and educational institutions from the Maghreb on the intellectual development and the emergence of native scholars and intelligentsia and on the general scholarly trend in the central Bilad al-Sudan.

Joseph Hardy Ltd.： Internal Audit for Performance Improvement

This paper features a case study, which looks at the use of financial and non-financial indicators （NFIs） of performance in the monitoring of a production process. It highlights the apparent deficiencies in the use of some indicators and provides opportunities for the implementation of preferred alternatives and for improvements in the organization and evaluation of the production process.

Kazakh Nationalism in Eurasian Context

This abstract has concerned primarily with the new look to the stages of post-Soviet Kazakh nationalism development embedded in context of Eurasian concept. Could we prove true widely held predictions about future strengthening of nationalists＇ position in post-crisis country？ As we state, opposite to above mentioned ideas, the more Kazakhstan would be involved in to Russian politics orbit which means further movement to Eurasian ＂path＂ the more undermined should be Kazakh nationalists conventional certainties. Moreover, one of the world crisis consequences could be displayed in leadership authoritarian tendencies strengthening. The latter undoubtedly ought to erode Kazakh nationalists＇ position.