Financing And Cooperation For Sustainable Development In The Mediterranean, Sophia Antipolis, France, 3-4 June 2004: Volume II: Technical Report of the Workshop

(263 page document)

永乐大钟及悬挂支撑系统的撞钟过程瞬态分析

采用ANSYS有限元分析软件对永乐大钟及其悬挂支撑系统建立了有限元模型,进行了撞钟过程有限元瞬态分析及动力强度校核。通过有限元计算,获得了大钟各局部考察对象及整体的应力、位移分布情况和各部分的动力响应和对强度的影响,为合理撞钟和加固提供了科学依据与技术指导。

Análisis estratégico de la industria de la construcción en España

[ES] El sector de la construcción tiene, en España, una notable importancia, por su aportación al PIB (del entorno del 10%) y al empleo (en torno al 10%) y porque aglutina un amplio tejido empresarial. El deterioro de la situación económica y la saturación del mercado residencial han llevado a una fuerte contracción de la actividad constructiva, después una larga época de crecimiento.

Fundo de Participação dos Estados : equilíbrio social e econômico

O Estado brasileiro é federal. O governo é repartido entre a União, Estados e os Municípios. A Constituição prevê que são dotados de autonomia, com responsabilidades sobre bens e serviços públicos e competências para arrecadação de tributos para o seu custeio. Há predominância da União, com necessidade de coordenação entre todos os governos em relação a certos assuntos. As decisões adotadas por cada ente federado podem beneficiar ou prejudicar os demais. Há fundamentos teóricos sobre a forma como são definidas aquelas responsabilidades e competências. Um exame dos tributos sobre o consumo, à renda e o patrimônio mostra que poucos deles são apropriados para serem cobrados pelos Estados e Municípios eficientemente, surgindo a necessidade de outros instrumentos para a obtenção de recursos. O Fundo de Participação dos Estados chama a atenção como relevante instrumento de transferência fiscal, e em razão de decisão do Supremo Tribunal Federal (STF), que, em 24-02-2010, declarou a inconstitucionalidade das suas regras de rateio previsto na Lei Complementar 62/1989, mantendo sua vigência até 31-12-2012. Consoante a decisão do STF, exigem-se novos critérios de rateio do fundo, de caráter móvel, relacionados às diferenças sociais e econômicas dos Estados, que impeçam a cristalização das cotas dele resultantes, e atendam o art. 161, II, Constituição. Os projetos de lei complementar da Câmara sobre o assunto contêm valiosos elementos para o estabelecimento de um novo modelo, destacando-se o território, a população, a renda per capita e a receita tributária como possíveis critérios a serem adotados.

Un método para el taladro de aluminio que facilita la unión por remaches de los componentes aeronáuticos

189 p. : il. col.

多环环间混杂复合材料飞轮离心应力分析

采用平面应力假设,给出了计算多环环间混杂复合材料飞轮的离心应力和初始极限转速的方法,并采用二维轴对称的有限元分析验证了计算方法的合理性,可作为初步设计多环环间混杂复合材料飞轮的依据.本文的算例分析还表明,无论单一纤维或混杂的复合材料飞轮,空心结构的初始极限转速和储能密度均高于相应的实心结构的结果;且对于空心结构,有利于通过选择合适的混杂方案,实现一定意义上的"等强度"设计.

Impacto de las políticas crediticias de la banca en los resultados ex post : una aproximación desde las teorías económicas del ciclo crediticio

[ES]Este trabajo se centra en el análisis de la relación entre las políticas crediticias de las entidades de crédito y el comportamiento de las mismas ex post. Se hace una revisión de la teoría que justifica que los mercados crediticios pueden estar sujetos, en determinadas circunstancias, a un componente endógeno más elevado de lo que, en general, se atribuye. Se plantea como hipótesis de trabajo la existencia de una relación entre la intensidad en el crecimiento de la cartera crediticia de los bancos en las fases de expansión crediticia y su comportamiento ex post. Los resultados preliminares presentados confirman la hipótesis de que las entidades que más desvían su crecimiento crediticio respecto del crecimiento del PIB nominal, están sujetas a un peor comportamiento en cuanto a la evolución posterior de sus beneficios, rentabilidades e insolvencias.

Spatial and Temporal Variation of LURR and Its Implication for the Tendency of Earthquake Occurrence in Southern California

Based on the theory of LURR and its recent development, spatial and temporal variation of Y/Y-c (value of LURR/critical value of LURR) in the Southern California region during the period from 1980 through March, 2001 was studied. According to the previous study on the fault system and stress field in Southern California, we zoned the Southern California region into 11 parts in each of which the stress field is almost uniform. With the time window of one year, time moving step of three months, space window of a circle region with a radius of 100 km and space moving step of 0.25 degree in latitude and longitude direction, the evolution of Y/Y-c were snapshot. The scanning results show that obvious Y/Y-c anomalies occurred before 5/6 of strong earthquakes considered with a magnitude of 6.5 or greater. The critical regions of Y/Y-c are near the epicenters of the strong earthquakes and the Y/Y-c anomalies occur months to years prior to the earthquakes. The tendency of earthquake occurrence in the California region is briefly discussed on the basis of the examination of Y/Y-c.

Spatio-Temporal Scanning and Statistical Test of the Accelerating Moment Release (AMR) Model Using Australian Earthquake Data

The Accelerating Moment Release (AMR) preceding earthquakes with magnitude above 5 in Australia that occurred during the last 20 years was analyzed to test the Critical Point Hypothesis. Twelve earthquakes in the catalog were chosen based on a criterion for the number of nearby events. Results show that seven sequences with numerous events recorded leading up to the main earthquake exhibited accelerating moment release. Two occurred near in time and space to other earthquakes preceded by AM R. The remaining three sequences had very few events in the catalog so the lack of AMR detected in the analysis may be related to catalog incompleteness. Spatio-temporal scanning of AMR parameters shows that 80% of the areas in which AMR occurred experienced large events. In areas of similar background seismicity with no large events, 10 out of 12 cases exhibit no AMR, and two others are false alarms where AMR was observed but no large event followed. The relationship between AMR and Load-Unload Response Ratio (LURR) was studied. Both methods predict similar critical region sizes, however, the critical point time using AMR is slightly earlier than the time of the critical point LURR anomaly.

Integration property of a wedge-elliptic cone waverider with scramjet engine

The hypersonic waverider forebody is designed in this paper. For the present waverider, the undersurface is carved out as a stream surface of a hypersonic inviscid flow field around wedge-elliptic cone, and the upper surface is assumed to be a freestream surface. A finite-volume code is used to generate the three-dimensional flow field. The leading edge is determined by satisfying the condition that the lip is situated at the intersection line of shocks.

Bolonia, irakaskuntza-berrikuntza eta praktikaren eta teoriaren arteko tentsioa enpresa-ikasketetan

Artikulu honetan Goi Mailako Hezkuntzaren Europar Esparrura egokitzeko prozesuaren ondorioz enpresa-ikasketen alorrean gertatu diren aldakuntzak aztertuko ditu egileak, irakaskuntza-metodologia berritzaileak ezartzeko egindako ahaleginaren argitan eta, bereziki, aipatu ikasketetan Ameriketako Estatu Batuetan dagoeneko klasiko bihurtu den praktikaren eta teoriaren arteko eztabaidaren argitan. Egilearen aburuz, dagoeneko ibilitako bideari atzera erreparatuz, Boloniako planak ekarri duen balizko berrantolaketatik nekez atera daiteke ondorio positiborik aipatu tentsioaren orekarako, nahiz eta, zentzuzkoa deritzon, eszeptizismo handiegiaz bada ere, oraindik ere itxaropenari eustea.

Analytical calculations of Eulerian and Lagrangian time correlations in turbulent shear flows

The Taylor series expansion method is used to analytically calculate the Eulerian and Lagrangian time correlations in turbulent shear flows. The short-time behaviors of those correlation functions can be obtained from the series expansions. Especially, the propagation velocity and sweeping velocity in the elliptic model of space-time correlation are analytically calculated and further simplified using the sweeping hypothesis and straining hypothesis. These two characteristic velocities mainly determine the space-time correlations.