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91.
平度市国土资源局全面推进“双保”行动的探索 总被引:1,自引:1,他引:0
为应对国际金融危机,平度市国土资源局积极响应国土资源部在全国范围内部署开展的"保增长、保红线"双保行动,立足部门职能,扎实工作,加强和改善土地宏观调控新机制,有效保障扩大内需,保障重点项目用地,促进经济平稳较快发展。 相似文献
92.
文章对我国现行矿产资源法立法的历史继承性、时代特征、宪法依据等进行了理论分析,剖析了其立法上的有关局限性,尤其是在综合专家、学者观点的基础上,对矿业权之权利属性进行了一定的归纳分析,为完善我国现行矿产资源法的构想进行了理论上的探讨。 相似文献
93.
在全球气候变化和高强度人类活动的影响下,松嫩平原地下水环境日益恶化,已成为制约生态环境建设和经济社会发展的重要因素。选取具有典型代表意义的洮儿河流域作为研究区,对地下水进行系统取样分析,综合运用描述性统计、相关性分析、离子比例系数和Piper三角图示法,全面系统地研究地下水水化学的时空变异特征与演变规律,揭示了风化溶滤、蒸发浓缩、阳离子交换和人为混合是控制地下水质演变的主要水文化学过程,从而为流域乃至松嫩平原盐渍土区水资源可持续开发利用和管理提供科学依据。 相似文献
94.
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96.
We consider the advantages of a formalism based on concept of the asymmetric continuum and we present some equivalence theorems
relating it to the asymmetric elasticity and to micropolar and micromorphic theories as founded by Nowacki, Cosserats and
Eringen.
We consider the basic processes in an asymmetric continuum which could be reduced to the point basic motions/deformations.
The co-action of spin and shear motions is assumed to play the main role in fracturing process, while the constitutive relation
between the antisymmetric stresses and rotations replaces the friction constitutive law. 相似文献
97.
ZOLTÁN SYLVESTER 《Sedimentology》2007,54(4):847-870
Turbidite bed thickness distributions are often interpreted in terms of power laws, even when there are significant departures from a single straight line on a log–log exceedence probability plot. Alternatively, these distributions have been described by a lognormal mixture model. Statistical methods used to analyse and distinguish the two models (power law and lognormal mixture) are presented here. In addition, the shortcomings of some frequently applied techniques are discussed, using a new data set from the Tarcău Sandstone of the East Carpathians, Romania, and published data from the Marnoso‐Arenacea Formation of Italy. Log–log exceedence plots and least squares fitting by themselves are inappropriate tools for the analysis of bed thickness distributions; they must be accompanied by the assessment of other types of diagrams (cumulative probability, histogram of log‐transformed values, q–q plots) and the use of a measure of goodness‐of‐fit other than R2, such as the chi‐square or the Kolmogorov–Smirnov statistics. When interpreting data that do not follow a single straight line on a log–log exceedence plot, it is important to take into account that ‘segmented’ power laws are not simple mixtures of power law populations with arbitrary parameters. Although a simple model of flow confinement does result in segmented plots at the centre of a basin, the segmented shape of the exceedence curve breaks down as the sampling location moves away from the basin centre. The lognormal mixture model is a sedimentologically intuitive alternative to the power law distribution. The expectation–maximization algorithm can be used to estimate the parameters and thus to model lognormal bed thickness mixtures. Taking into account these observations, the bed thickness data from the Tarcău Sandstone are best described by a lognormal mixture model with two components. Compared with the Marnoso‐Arenacea Formation, in which bed thicknesses of thin beds have a larger variability than thicknesses of the thicker beds, the thinner‐bedded population of the Tarcău Sandstone has a lower variability than the thicker‐bedded population. Such differences might reflect contrasting depositional settings, such as the difference between channel levées and basin plains. 相似文献
98.
通过试验研究,探讨主要气象因子在唐河县的变化规律和对金花梨生长发育的影响,研究金花梨在遭受灾害性天气影响时,采取相应的技术措施,确保金花梨的高产、稳产。 相似文献
99.
A shakemap system providing rapid estimates of strong ground shaking could be useful for emergency response providers in a
damaging earthquake. A hybrid procedure, which combines site-dependent ground motion prediction models and the limited observations
of the Real-Time Digital stream output system (RTD system operated by Central Weather Bureau, CWB), was set up to provide
a high-resolution shakemap in a near-real-time manner after damaging earthquakes in Taiwan. One of the main factors that affect
the result of ground motion prediction analysis is the existence of site effects. The purpose of this paper is to investigate
the local site effects and their influence in the ground shaking and then establish an early estimation procedure of potential
hazard for damaging earthquakes. Based on the attenuation law, the site effects of each TSMIP station are discussed in terms
of a bias function that is site and intensity-level dependent function. The standard deviation of the site-dependent ground
motion prediction model can be significantly reduced. The nonlinear behavior of ground soil is automatically taken into account
in the intensity-level dependent bias function. Both the PGA and the spectral acceleration are studied in this study. Based
on the RTD data, event correctors are calculated and applied to precisely estimate the shakemap of damaging earthquakes for
emergency response. 相似文献
100.
对地震科技档案目前在收集、接收等常规管理中存在的问题和如何解决这些问题进行了详细论述。认为,只有实现了档案材料形成积累和收集整理过程的一体化,才可保障档案材料的齐全完整,实现依法管理。 相似文献