共查询到20条相似文献，搜索用时 62 毫秒
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为切实加强建设用地,特别是工业用地的批后监管,2009年省国土资源厅、省发改委、省经贸委、省建设厅联合下发了《关于加强建设用地批后监管的通知》（浙土资发[2009]3号）,为构建最严格的节约用地制度,加强工业用地的批后监管,提供了较好的政策环境和操作依据。在政策具体实施和操作中,我们结合基层实际进行了专题调研,提出了对策建议。 相似文献
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我公司在部、局及省建设厅各级领导的大力支持、关心下，几年来坚持贯彻“经济建设必须依靠科学技术，科学技术工作必须面向经济建设”的方针，大力推行科技进步，积极开发，应用和推广施工新技术、新工艺、新方法，促进了企业生产经营的全面发展，经济效益在全国同行业中处于领先地位，社会效 相似文献
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一、主要做法和初步成效1.健全体制,形成省、市、县三级指导配合相协调的稽查工作格局2004年,我厅将“省建筑市场稽查办公室”更名为“省建设监察 相似文献
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我院在省建设厅的直接领导下,坚持小平同志建设有中国特色的社会主义道路,按照“改革、发展、稳定”的原则,积极促进两个根本性转变,推进各项改革,经全院职工的共同努力,对上顺利完成了省建设厅的技术经济承包责任制,对内加强以效益为中 相似文献
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Danut Mihon Victor Bacu Dorian Gorgan Róbert Mészáros Gyõrgyi Gelybó 《Earth Science Informatics》2010,3(4):247-258
Earth Science data and particularly the satellite images supplies important information on status and dynamics of earth covering
vegetation. The development of environment applications is a challenge for Grid technologies and software development methodologies.
This paper exemplifies and experiments the development of the GreenView application over SEE-GRID infrastructure by the Grid
Application Development Methodology. The paper highlights through the ESIP and gProcess platforms based methodology the steps
of the GreenView development. The application reveals three main functionalities—refinement of the satellite image resolution,
field measurements based calibration and satellite image classification by vegetation index computation. A few experiments
evaluate the execution time of the tasks at four sites of the SEE-GRID infrastructure. 相似文献
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这是一个复杂条件下的既有建筑物纠倾加固的工程实例。介绍了建筑物的基本情况。用多种方法详细观测了其倾斜和开裂现状。辅以补充地质勘探,从勘察、设计、施工、检测等方面分析了倾斜原因,提出了纠倾和加固方案。介绍了工程实施情况和效果。简要地总结了经验和体会。 相似文献
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Hector A. Duran-Limon Jesus Flores-Contreras Nikos Parlavantzas Ming Zhao Angel Meulenert-Peña 《Earth Science Informatics》2016,9(3):365-382
There are many scientific applications that have high performance computing (HPC) demands. Such demands are traditionally supported by cluster- or Grid-based systems. Cloud computing, which has experienced a tremendous growth, emerged as an approach to provide on-demand access to computing resources. The cloud computing paradigm offers a number of advantages over other distributed platforms. For example, the access to resources is flexible and cost-effective since it is not necessary to invest a large amount of money on a computing infrastructure nor pay salaries for maintenance functions. Therefore, the possibility of using cloud computing for running high performance computing applications is attractive. However, it has been shown elsewhere that current cloud computing platforms are not suitable for running some of these kinds of applications since the performance offered is very poor. The reason is mainly the overhead from virtualisation which is extensively used by most cloud computing platforms as a means to optimise resource usage. Furthermore, running HPC applications in current cloud platforms is a complex task that in many cases requires configuring a cluster of virtual machines (VMs). In this paper, we present a lightweight virtualisation approach for efficiently running the Weather Research and Forecasting (WRF) model (a computing- and communication-intensive application) in a cloud computing environment. Our approach also provides a higher-level programming model that automates the process of configuring a cluster of VMs. We assume such a cloud environment can be shared with other types of HPC applications such as mpiBLAST (an embarrassingly parallel application), and MiniFE (a memory-intensive application). Our experimental results show that lightweight virtualisation imposes about 5 % overhead and it substantially outperforms traditional heavyweight virtualisation such as KVM. 相似文献
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John A. Philpotts 《Geochimica et cosmochimica acta》1978,42(6):909-920
Improvements in analytical technique, study of multielement partitioning in natural systems and improvements in ionic radius values have permitted construction of Onuma diagrams, in which the logarithm of partition coefficient is plotted versus ionic radius. The optimum radii, corresponding to crystallographic sites, do change in response to changes in major element composition for any particular mineral-type. In natural systems elements compete for sites rather than substituting for another element. It is proposed on empirical grounds, for equilibrium ionic bonding, that Onuma diagram curves for a particular lattice site are parabolic near optimum radius, linear elsewhere, parallel for different valences and mirror images on opposite sides of optimum. Deviations may be due to overlapping peaks, liquid structure, polyvalence, bonding differences, contamination, kinetics, alteration, etc. However, dominant crystal-chemical control is indicated. 相似文献
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Fault-creep events measured on the San Andreas and related faults near Hollister, California, can be described by a rheological model consisting of a spring, power-law dashpotand sliding block connected in series. An empirical creep-event law, derived from many creep-event records analyzed within the constraints of the model, provides a remarkably simple and accurate representation of creep-event behavior. The empirical creep law is expressed by the equation: D(t)= Df [1?1/{ct(n?1)Dfn?1+1}/(n?1)] where D is the value of displacement at time t following the onset of an event, Df is the final equilibrium value of the event displacementand C is a proportionality constant. This discovery should help determine whether the time—displacement character of creep events is controlled by the material properties of fault gouge, or by other parameters. 相似文献
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Governing equations often used in soil mechanics and hydrology include the classical Darcy's law, Terzaghi's effective stress principle, and the classical Fick's first law. It is known that the classical forms of these relations apply only to non-swelling, granular materials. In this paper, we summarize recent generalizations of these results for swelling porous media obtained using hybrid mixture theory (HMT) by the authors. HMT is a methodical procedure for obtaining macroscopic constitutive restrictions which are thermodynamically admissible by exploiting the entropy inequality for spatially-averaged properties. HMT applied to the modeling of swelling clay particles, viewed as clusters of adsorbed water and clay minerals, produces additional terms necessary to account for the physico-chemical forces between the adsorbed water and clay minerals or, more generally, for swelling colloids. New directions for modeling consolidation of swelling clays are proposed based on our view of clay particles as a two-phase system. 相似文献
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中国地质调查局“海域天然气水合物陆地试采工程”项目组在山东省东营市的沿海滩涂地区建设了一处钻井试验基地。该钻井井场地基土是黄河三角洲的典型粉沙质粘土,存在微振液化特性。对比填方方案在造价、工期、环保和适用性等方面的优缺点,选择灰土垫层施工方案并严格控制施工质量。灰土垫层可以形成有效的隔水层,隔离地下水上升通道和地表水下渗通道,切断微振液化的根源,同时杜绝场地内工程污水的下渗。填方施工全程采用静压压实填土配比,避免了孔隙水上升、土体产生微振液化效应。填方区域分为重载区和轻载区,采用不同的填方方案,既满足了承载力要求,又节约了成本。该填方方案取得了良好的施工效果,为试验基地的顺利运行提供了保障。 相似文献
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We report an empirical determination of the probability density functions Pdata(r) of the number r of earthquakes in finite space–time windows for the California catalog for different space (5 × 5 to 50 × 50 km2) and time intervals (0.1 to 1000 days). The data can be represented by asymptotic power law tails together with several cross-overs reasonably explained by one of the most used reference model in seismology (ETAS), which assumes that each earthquake can trigger other earthquakes according to complex cascades. These results are useful to constrain the physics of earthquakes and to estimate the performance of forecasting models of seismicity. 相似文献
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This paper is aimed towards investigating the filtration law of an incompressible viscous Newtonian fluid through a rigid non-inertial porous medium (e.g. a porous medium placed in a centrifuge basket). The filtration law is obtained by upscaling the flow equations at the pore scale. The upscaling technique is the homogenization method of multiple scale expansions which rigorously gives the macroscopic behaviour and the effective properties without any prerequisite on the form of the macroscopic equations. The derived filtration law is similar to Darcy's law, but the tensor of permeability presents the following remarkable properties: it depends upon the angular velocity of the porous matrix, it verifies Hall–Onsager's relationship and it is a non-symmetric tensor. We thus deduce that, under rotation, an isotropic porous medium leads to a non-isotropic effective permeability. In this paper, we present the results of numerical simulations of the flow through rotating porous media. This allows us to highlight the deviations of the flow due to Coriolis effects at both the microscopic scale (i.e. the pore scale), and the macroscopic scale (i.e. the sample scale). The above results confirm that for an isotropic medium, phenomenological laws already proposed in the literature fails at reproducing three-dimensional Coriolis effects in all types of pores geometry. We show that Coriolis effects may lead to significant variations of the permeability measured during centrifuge tests when the inverse Ekman number Ek−1 is 𝒪(1). These variations are estimated to be less than 5% if Ek−1<0.2, which is the case of classical geotechnical centrifuge tests. We finally conclude by showing that available experimental data from tests carried out in centrifuges are not sufficient to determining the effective tensor of permeability of rotating porous media. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献