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111.
A simplified model useful for assessing economic losses due to moderate seismicity events in urban areas has been developed by studying the behavior of buildings before yielding their structural system, allowing for nonuniform stiffness along their height. In particular, buildings are modeled as cantilever shear beams with uniform mass and parabolic reduction of lateral stiffness. This particular stiffness distribution is relevant, as it could be expected to occur in buildings where earthquake action is a critical structural design criterion. The equation of motion governing the dynamic behavior of the proposed model is solved analytically, finding mode shapes in terms of first and second zero-order Legendre functions. The solution is verified by comparing it with results obtained from fine mesh finite element models. The effect of reducing the lateral stiffness is then studied in the first five modes of vibration. Results include modal periods, mode shapes, modal participation factors, and derivatives of mode shapes. In general, it is found that effects of reduction of lateral stiffness in mode shapes are moderate when the lateral stiffness in the free end is smaller than about seventy percent of the lateral stiffness at the fixed end, but become significant for larger reductions. Effects are particularly important for the derivative of the mode shapes, which could play a significant role in estimating interstory drift demands in buildings. Model usefulness is showcased by analyzing a test case where both acceleration and drift demands are assessed by considering uniform beams and beams with parabolic stiffness variation, finding notable improvements by considering the latter. 相似文献
112.
Anne Létourneau 《SJOT: Scandinavian Journal of the Old Testament》2018,32(1):72-91
This paper investigates the function of beauty in David and Bathsheba’s encounter in 2 Sam 11,1-5. It argues that the female bather’s pleasant appearance, rather than simply kindling king David’s desire, focalizes the woman as sexually available (and vulnerable) and wraps the whole episode in a royal fantasy of shared intimacy. The focus on Bathsheba’s beautiful body—her wash, her motion towards the king, her self-sanctification and her pregnancy—frames the episode in a very erotic way, suggesting adultery. It conceals the sexual violence committed by the king who sends, takes and sleeps with the woman. David’s violent entitlement to Bathsheba reveals the beauty politics at play in his royal House. 相似文献
113.
Daniel Gabaldón-Estevan Liney Manjarrés-Henríquez F. Xavier Molina-Morales 《European Planning Studies》2018,26(5):895-914
In this work, we apply a systemic approach to the analysis of a particular geographic territory, the industrial district. We are particularly interested in analysing the interaction between the productive-technological environment and the scientific environment by an examination of research contracts and patents. Our analysis shows that R&D activity in the Spanish ceramic tile District Innovation System was mainly conducted by suppliers. Final producers’ innovation efforts were related to non-technological aspects and differentiation. 相似文献
114.
Joana Almeida José Antunes Ferreira Beatriz Condessa Ricardo Tomé 《European Planning Studies》2018,26(7):1431-1449
Whilst the advantages of the application of Land Readjustment (LR) are well known, there are nevertheless numerous countries in which application of LR is difficult or has not been successful. In its analysis of land readjustment constraints, conditions and the international practice, this paper contributes to improving the implementation of an LR system, particularly with respect to the management process. At the international level, management models in seven countries were studied: Australia, France, Germany, Japan, South Korea, Spain and Sweden. In Portugal, three case studies in the municipalities of Almada, Coimbra and Lisbon were selected, with semi-structured interviews being conducted with the respective managing entities. The management models are distinguished by the type of initiative and leadership processes, relations among stakeholders, managing entities and operating rules. It can be concluded that the role of the public authority as the process facilitator from the very initial stages, the existence of a managing entity and a board of specialists, and the legal conditions governing expropriation are key factors for the improvement of land readjustment management. 相似文献
115.
We present a new curve of the directional secular variation of the geomagnetic field in Western Europe between 1500 bce and 200 ce . Its computation relies on a Bayesian framework. The fast secular variation during the Late Bronze and Early Iron Ages makes archaeomagnetic dating efficient with a respective precision of 150–200 and 60–100 years during these periods. The Bayesian method also provides posterior date distributions that refine the dating of reference data, especially during the period of the Hallstattian radiocarbon plateau. Archaeomagnetism becomes a valuable alternative to radiocarbon and will help to improve the archaeological chronologies. 相似文献
116.
This paper narrates Puerto Rico's fiscal and financial crisis through a reading of San Juan's urban landscape. We underscore the role of capital in the city, primarily embodied by the local capitalist class (the Criollo bloc) and foreign capitalists. Historically excluded from the manufacturing sector (dominated by US capitalists), the Criollo bloc accumulates its wealth by concentrating financial assets in the city. In times of crisis, the Criollo bloc resorts to the acquisition of new assets and asset exchange with foreign capitalists to remain solvent and provide short‐term solutions to the state's fiscal and financial limits. The survival of the local capitalist class, we demonstrate, is dependent on asset stripping. Drawing on Clyde Woods, we document how asset stripping unevenly redistributes wealth and risks along class and racial lines within a colonial economy. The finance capital/asset stripping basis of San Juan's economy renders it an extremely fragile city, we contend. 相似文献
117.
Sibrecht Reniere Aurélie Thiébaux Roland Dreesen Éric Goemaere Wim De Clercq 《Oxford Journal of Archaeology》2018,37(3):313-337
The purpose of this paper is to demonstrate cross‐Channel exchange of calcareous sandstone‐type whetstones derived from the Weald (Sussex, UK) in the Roman period. The presence of this particular type of whetstone at several Roman sites on the Continent – more specifically, in Belgium, France and the Netherlands – is reported for the first time. The morphology, geological provenance, petrographic characteristics and distribution patterns are discussed, based on a comparative analysis with archaeological and geological reference material. The geological analysis identifies a common geological source for the Continental finds: the very fine‐grained, thin‐bedded, flagstone‐like calcareous sandstone beds of the Lower Cretaceous Wealden Clay Formation. These sandstones were, most probably, extracted in the north‐western part of the Weald area. The distribution pattern of the archaeological material implies the importance of personal mobility, with potential military affinities. 相似文献
118.
John Stachel 《Revue de synthèse / Centre international de synthèse》2005,126(2):353-365
As the sobriquet «Zweistein» suggests, within the theoretical physics community Wolfgang Pauli came to be regarded as second in eminence only to Albert Einstein. Over a period of thirty-five years, they interacted both intellectually and personally. This paper focuses on four interrelated topics of their discussions. 1) The theory of relativity: at the age of twenty, Pauli prepared the definitive survey of relativity, a survey which he revised near the end of his life and which remains invaluable to physicists and historians of physics. 2) Unified field theories: although initially sympathetic to Einstein's search for a unified theory of electromagnetism and gravitation, and having made important contributions to the subject, Pauli came to regard such efforts as fruitless. 3) Foundations of quantum mechanics: Pauli's negative evaluation of Einstein's program grew out of their sharply differing evaluations of the role that quantum mechanics would play in the future, development of theoretical physics. 4) Quantum gravity: Pauli recognized that, until the achievement of a successful reconciliation of quantum mechanics and general relativity — an achievement that still eludes us — Einstein's challenge to quantum mechanics could not be laid to rest. 相似文献
119.
120.
Marcia Bezerra 《Archaeologies》2005,1(2):60-70
Este ensayo reporta sobre investigaciones entre un grupo de ni?os escolares brasile?os que fueron entrevistados para ver como
ellos consideraban la arqueología, como su conocimiento del pasado afecta su comprensión del presente, y como su experiencia
del presente les informa su vista del pasado.
[T]he miracle that we would hope for from the bottom of our hearts, the school as a preserved universe, island of purity—in which all disparities and social struggles would come to a stop, this miracle does not exist: the school is part of the world. (Snyders 1977:18) 相似文献
Résumé Ce papier présente des recherches menées parmi un groupe d'écoliers brésiliens afin de savoir comment ils voient l'archéologie, comment leur connaissance du passé affecte leur compréhension du présent et comment leur expérience du présent renseigne leurs vues du passé.
[T]he miracle that we would hope for from the bottom of our hearts, the school as a preserved universe, island of purity—in which all disparities and social struggles would come to a stop, this miracle does not exist: the school is part of the world. (Snyders 1977:18) 相似文献