当前人们对马克思主义劳动和劳动价值论的几种曲解

人们在深化对劳动和劳动价值论的研究和认识过程中存在着曲解马克思主义劳动和劳动价值论的几种情况 :认为马克思劳动价值论中的劳动是单指体力劳动 ,认为创造价值的劳动不包括科技劳动 ,认为马克思把管理劳动排除在创造价值的劳动之外 ,认为马克思否认非物质生产领域劳动能创造价值。     

EVALUATION ON NUTRITIVE VALUE OF PORTUNUS TRITUBERCULATUS

MODUon0NP.trituberculatushasanupswellingshuttiedsecephalothoraxcrust0nWhosescheearemanydiversefinegranuleswhichbererneroughandconcentIatalinthegillaas.IthasthIeewartybulgesandtwosharpodhonitSforeheadPaiAiy-U,l986).Thechelipedisdeveloped,itSmerusisshuuleshaped,thefotirthpairofpereiopodsareuseoars,itScarpopoditiswideandshort,thedaCty0poditisslab-shaped,eachjoint'sedgehasshorthahaforswirTuning,themalebodyisbluishgreen,andthebolebodyisadeeppmple.Maleanddrileglands')locateatthedorsalordorsola…     

一阶可变号非线性奇异初值问题

获得了一类一阶可变号非线性奇异初值问题的新结果。     

USE OF VALUE FUNCTIONS AS A POSSIBLE SUITABILITY SCALING PROCEDURE IN AUTOMATED COMPOSITE MAPPING

The application of composite suitability mapping integrated with a geographic information system is progressing at a much faster rate than the methodological improvements necessary for optimal use in the public planning context. The use of value functions is suggested as an alternative scaling procedure that is scientifically and operationally preferable to existing procedures. Value functions limit the operational subjectivity and enhance the potential for replication and verification of the analysis. Value functions are conducive to increased automation of the land planning and decision process while being comprehensible to non-expert decision-makers and the public.     

Extreme Earthquake and Earthquake Perceptibility Study in Greece and its Surrounding Area

The sample interval for the selection of extreme magnitudes plays an important part in the quality of Gumbel model fitting. A short sample interval can produce many observations, which is helpful in obtaining a reliably fitting model. However a short sample interval can bring many dummy ``observations', a condition which adversely biases the fitting. The short sample interval also increases the chance to introduce non-independent observations as well, which violates a basic requirement of the Gumbel model. On the other hand, a large time interval not only reduces the number of observations, but also enlarges the observation error. Thus, for Greece, the most suitable parameters of the third Gumbel extreme model are obtained by using a sample interval which produces minimum error. In consideration of the reliability of the seismic data, earthquakes with magnitude M 5.5 in Greece and its surrounding region after 1900 are used mainly in the present paper. In order to obtain well resolved contour maps with smooth changes a 2°× 2° cell with half-degree overlap strategy was used to scan the region. The most expected largest earthquake for the next fifty, one hundred and two hundred years are estimated for each cell. Likewise, the events with magnitude at a probability of 90\% of non-exceedance over the next fifty, one hundred and two hundred years are estimated for each cell. In parallel to this procedure we also analyze the 67 shallow seismic zones outlined by Papazachos and his colleagues and detail individual zone results where these are obtained. The most perceptible earthquake magnitude for the range of intensities I = {VI}, VII and VIII are also calculated. All results show that the areas around the Hellenic Arc and the Cephalonia Transform Fault for Greece have comparatively high frequency of destructive earthquakes accompanied by a high occurrence probability of moderate earthquakes (M 5.5).     

对地铁结构监测基准点稳定性的研究

本文在研究大量变形监测技术与监测成果的基础上,注意到基准点的稳定性,它直接影响到监测成果的可靠性和客观性,尤其当基准点的稳定性超过两倍测量中误差时,监测成果不仅不能客观反映变形体的变形量,甚至出现较大偏差或错误,从而导致人们对变形体的变形趋势和安全性分析失准。因此,本文对监测基准点稳定性进行深入研究,并通过应用实例提出监测基准点的布设方法和稳定性分析方法。     

GIS在采煤沉陷区生态价值评价中的应用

以淮南市在采煤沉陷区生态治理规划中对规划区的生态价值评价为例,探讨了运用GIS技术和多源信息复合原理对规划区进行生态要素单因子评价和生态价值综合评价,选取评价因子包括地形因子、生态基质因子、植被因子及水环境保护因子。采用遥感与地理信息系统相结合的技术,建立与评价相关的基于GIS的基础数据平台,运用GIS的空间分析功能对规划区的生态价值进行分析和评估。通过对规划区各类生态因子的评价,深入了解规划区内生态价值的特征与空间分布,提取重要生态节点;为挖掘规划区生态建设潜力,实施生态治理和建设提供依据。     

线纹计量器具检定系统表修订建议

JJG 2001-1987《线纹计量器具检定系统》是我国线纹计量器具进行量值传递的检定系统表,但其存在着许多不足,已无法满足当今计量检定的需要。此处对该检定系统表进行详细分析后给出修订建议,并介绍了目前国际上有关动向,提出了一些有益建议。     

OSL测年中CGC法求D_e均值的计算方法之比较分析

光释光测年中等效剂量是计算样品埋藏年龄的一个重要参数,一般通过求多个实验测量值的均值得出。标准生长曲线法是求等效剂量的一种常用且有效的方法,分析讨论了此法计算的等效剂量存在小幅度的系统性的偏大及其原因,提出了改进的方法;展望了CGC法求De均值更优的估计——极大似然估计。     

城市景观对住宅价格的影响——以杭州市为例

优美的城市景观是人们日常生活休闲、娱乐的场所, 给人们带来心理上的愉悦和舒适感, 对城市的品质内涵也有重要影响。由于大多数景观效益是隐性的, 其舒适性价值难以用货币价格直接测量, 国内外学者广泛采用特征价格法进行实证研究。本文以杭州市为例, 从建筑、邻里、区位、景观四个维度选择25个解释变量构建特征价格模型, 定量评估了城市内部各类景观对住宅价格的影响。实证结果表明:住宅价格与到西湖和公园的距离呈负相关关系, 而与公园的面积呈正相关关系:其中, 到西湖和最近公园的距离每增加1%,住宅价格将分别下降0.240%和0.036%;公园的面积每增大1%,附近的住宅价格则提高0.012%;广场、山景、钱塘江等景观也对周边一定范围内房价具有显着的提升作用。