东亚金融危机与中国   总被引：1，自引：1，他引：0  

胡兆量 《地域研究与开发》1999,18(2):29-31,50

经历时间长、影响范围广的东亚金融危机是由多方面的原因造成的。它的基础是广泛存在的泡沫经济。金融业的全球一体化,离岸金融中心和金融衍生工具的出现,国际炒家的掀风作浪,加剧了危机的深度。中国由于实质经济比较稳固,对金融业开放持谨慎态度等原因,受到的冲击相对较小。危机给中国敲响了警钟,要求中国尽快进行金融体制的改革。  相似文献   

Two populations of open clusters     

A. Strobel 《Astronomische Nachrichten》1989,310(5):367-373

The paper proposes a division of the local open clusters into two different disklike subpopulations on the base of the metallicity enhancement history, spatial distribution in the Galaxy and morphology of their C-M diagrams. The thin disk population objects exhibit higher metallicities and are more closely concentrated to the center and the disk of the Galaxy than the thick disk clusters. The former contain also frequently blue stragglers while the later exhibit the presence of Clump giant members, typical for the thick disk globular clusters. Kinematical properties of the two considered open cluster subpopulations remain unknown due to the lack of observational data.  相似文献   

表面波破碎泡径谱的理论研究     

韩磊  袁业立 《海洋科学进展》2007,25(3):289-294

采用新的无量纲变量组合推导出波浪破碎形成的气泡总数与气体体积卷入率、湍流能谱密度以及表面张力之间的关系;利用观测结果提出两点假设,并据此将泡径谱N(a)推广为随泡径和深度的分布函数N(a,z)。  相似文献   

Population statistics study of radio and gamma-ray pulsars in the Galactic plane     

Peter L. Gonthier  Sarah A. Story  Brian D. Clow  Alice K. Harding 《Astrophysics and Space Science》2007,309(1-4):245-251

We present results of our pulsar population synthesis of normal and millisecond pulsars in the Galactic plane. Over the past several years, a program has been developed to simulate pulsar birth, evolution and emission using Monte Carlo techniques. We have added to the program the capability to simulate millisecond pulsars, which are old, recycled pulsars with extremely short periods. We model the spatial distribution of the simulated pulsars by assuming that they start with a random kick velocity and then evolve through the Galactic potential. We use a polar cap/slot gap model for γ-ray emission from both millisecond and normal pulsars. From our studies of radio pulsars that have clearly identifiable core and cone components, in which we fit the polarization sweep as well as the pulse profiles in order to constrain the viewing geometry, we develop a model describing the ratio of radio core-to-cone peak fluxes. In this model, short period pulsars are more cone-dominated than in our previous studies. We present the preliminary results of our recent study and the implications for observing these pulsars with GLAST and AGILE.   相似文献   

Assessment of acoustic iterative inverse method for bubble sizing to experimental data     

Bok Kyoung Choi  Bong -Chae Kim  Byoung -Nam Kim  Suk Wang Yoon 《Ocean Science Journal》2006,41(4):195-199

Comparative study was carried out for an acoustic iterative inverse method to estimate bubble size distributions in water. Conventional bubble sizing methods consider only sound attenuation for sizing. Choi and Yoon [IEEE, 26(1), 125–130 (2001)] reported an acoustic iterative inverse method, which extracts the sound speed component from the measured sound attenuation. It can more accurately estimate the bubble size distributions in water than do the conventional methods. The estimation results of acoustic iterative inverse method were compared with other experimental data. The experimental data show good agreement with the estimation from the acoustic iterative inverse method. This iterative technique can be utilized for bubble sizing in the ocean.  相似文献   

Conservation aspects of natural populations and captive-bred stocks of turbot (Scophthalmus maximus) and Dover sole (Solea solea) using estimates of genetic diversity     

Exadactylos  Athanasios; Rigby  Mark J.; Geffen  Audrey J.; Thorpe  John P. 《ICES Journal of Marine Science》2007,64(6):1173-1181

  相似文献   

影响海洋光学遥感的海面白泡云研究回顾及进展   总被引：3，自引：0，他引：3  

毛显谋  黄韦艮  楼秀琳  傅斌  朱乾坤  唐军武 《海洋科学进展》2005,23(4):536-542

回顾了国内外影响海洋光学遥感的白泡云的反射率和覆盖率的研究进展情况。根据海洋水色高光谱遥感发展的需要，指出应当开展海洋白泡云中信号白浪和白沫光学反射特征的测量和研究，以便评价和排除白泡云的反射分量在光学遥感中的干扰。  相似文献   

A review of the biology and genetics of sea lice   总被引：5，自引：0，他引：5  

Boxaspen  Karin 《ICES Journal of Marine Science》2006,63(7):1304-1316

  相似文献   

Housing-market bubble adjustment in coastal communities - A spatial and temporal analysis of housing prices in Midwest Pinellas County,Florida     

《Applied geography (Sevenoaks, England)》2017

This study aims to investigate the spatial and temporal dynamics of housing prices associated with the 2007 U.S. housing-market bubble in Midwest Pinellas County, Florida. Two methods were used to examine the spatial and temporal dynamic of price levels: housing characteristic influence estimation and a hedonic modeling approach. Two consistent spatial patterns emerged in the estimated coefficients associated with various housing characteristics, with definitive changes occurring at 600 m and 2200 m from the coast. These changes suggested the existence of three geographical submarkets: a coastal, an intermediate or transitional, and an inland submarket. Three temporal stages were observed from the coefficient trends associated with various housing characteristics: 2002–2005 (bubble-growing), 2006–2008 (bubble-burst), and 2009–2011 (post-bubble). The hedonic models demonstrated a complexity in the determinant of housing prices during the housing peak-bubble period. The inclusion of submarket dummy variables in the hedonic models improved the amount of explained variation. The R² values of the hedonic models from 2002 through 2008, followed by a decrease after the bubble-burst period. The pre-bubble-burst trend in R² suggests that predictable market forces were at work; partly driven by irrational expectations of housing buyers and the perceptions of run-away housing prices during the growth phase of the bubble.  相似文献   

Stabilization procedures in coupled poromechanics problems: A critical assessment     

Matthias Preisig  Jean H. Prévost 《国际地质力学数值与分析法杂志》2011,35(11):1207-1225

Numerical solutions for problems in coupled poromechanics suffer from spurious pressure oscillations when small time increments are used. This has prompted many researchers to develop methods to overcome these oscillations. In this paper, we present an overview of the methods that in our view are most promising. In particular we investigate several stabilized procedures, namely the fluid pressure Laplacian stabilization (FPL), a stabilization that uses bubble functions to resolve the fine‐scale solution within elements, and a method derived by using finite increment calculus (FIC). On a simple one‐dimensional test problem, we investigate stability of the three methods and show that the approach using bubble functions does not remove oscillations for all time step sizes. On the other hand, the analysis reveals that FIC stabilizes the pressure for all time step sizes, and it leads to a definition of the stabilization parameter in the case of the FPL‐stabilization. Numerical tests in one and two dimensions on 4‐noded bilinear and linear triangular elements confirm the effectiveness of both the FPL‐ and the FIC‐stabilizations schemes for linear and nonlinear problems. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献