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1.
以矿产行业人力资源管理者为研究对象,就其胜任力问题展开研究,以期为矿产行业人力资源管理者能力的提升提供理论依据。在梳理国内外相关文献的基础上,编制出初始评价指标体系,随后经过2轮德尔菲法修正,构建出包含5个一级指标、由19个二级指标组成的矿产行业人力资源管理者胜任力评价指标体系,而后由专家小组16名成员赋值,运用层次分析法(AHP)确定各指标最终计分权重,权重由高至低依次为人力资源管理技能、战略性贡献、个人素质、经营知识和应变反应;最后,结合矿产行业W集团案例进行实证检验,证明了评价指标体系的可行性与可靠性。  相似文献   

2.
本文以青岛市为研究案例,通过对经济、环境、社会不同系统的特征分析以及它们之间的关系研究,建立科学、合理的青岛市循环经济评价指标体系;并运用层次分析法建立指标权重体系,对青岛市循环经济发展水平进行了定量研究.结果 表明青岛市循环经济综合评价指数为0.877 1,处于Ⅰ级水平,属可循环状态.  相似文献   

3.
介绍了飞行器未来的作战环境、国外攻防对抗技术和战术的发展情况,特别是超低空飞航导弹在未来战争中的作用;讨论了飞行力学、微分对策、试验设计和飞行仿真在攻防对抗研究中的作用;从现代力学发展的角度,提出了"攻防对抗和作战效能研究是飞行力学研究的新阶段"的观点.  相似文献   

4.
水资源可再生能力综合评价的多目标决策理想区间法   总被引:6,自引:0,他引:6  
采用主、客观相结合的赋权基点法,以全局收敛的格雷码加速遗传算法为工具来确定权重,并对多目标决策理想点法进行改进,把评价标准处理成理想区间的形式,提出了一种新的评价方法——多目标决策理想区间法(MODMIIM).MODMIIM既融入了专家的主观意见,又避免了各分目标之间的比较,评分,解决了在多指标决策中出现的相容或不相容评价指标权重确定较为困难的问题,得到的最佳评价权重比较符合实际.文中介绍了MODMIIM的原理,给出了它的构成方法.并用MODMIIM对黄河流域9个行政分区的水资源可再生能力进行了综合评价,总的结论为黄河流域水资源总体上可再生能力较弱.MODMIIM与灰关联分析方法、模糊综合评判方法和遗传投影寻踪方法相比,可操作性强;与多目标决策.理想点法相比,可靠性、适用性强,MODMIlM可广泛应用于各种水资源综合评价问题中.  相似文献   

5.
大件运输辅助决策系统有助于提高大件运输的可靠性和安全性,为了对其实际应用效果进行评价研究,首先从目标功能、技术性能、经济效果三个方面构建了大件运输辅助决策系统的应用评价指标体系,并提出基于灰色关联度的评价指标权重确定方法,然后采用灰色统计方法建立测评矩阵,运用模糊综合评价法对辅助决策系统的应用效果进行评价。最后,通过实例验证论文提出的评价体系的有效性和可行性。  相似文献   

6.
煤层复杂性评价理论探讨   总被引:1,自引:0,他引:1  
本文通过对影响因素的分析,发现煤层复杂性是受几何类因素和安全类因素综合作用的影响,其中几何类因素占主导地位;建立了相应的评价体系和评价模型;确定了8个一级指标、46个二级评价指标和28个三级评价指标;并应用层次分析法给出了各评价指标的权重。  相似文献   

7.
综合人才场理论研究的宏观与微观要素,构建人才环境评价指标体系。采用因子分析、空间自相关分析评价浙江69个县(市/区)对人才的引力及其格局。研究表明:1)影响浙江省县域人才引力的主要是经济科研、人才培养扶持、城市生活三因子,通过各因子的空间差异分析发现,人才环境影响因子具有正相关性且呈现空间集聚特征;2)将浙江省县域各人才引力因子得分进行系统聚类发现,人才引力强的县(市)多集中在浙北地区,并形成以环杭州湾地区为人才吸引核心、以温台城市群为人才吸引次级核心的空间格局。  相似文献   

8.
湖泊富营养化组合评价的方差大小加权法   总被引:1,自引:0,他引:1  
针对湖泊水体富营养化评价方法具有的不确定性问题,提出了湖泊富营养化组合评价的方差大小加权法.该法的建立步骤为:首先根据富营养化评价标准,随机生成1000组富营养化水质指标样本,分别用灰色关联法、打分统计法、经验频率法、贝叶斯方法、模糊评价法、向量评价法、综合营养指数法7种单项方法进行富营养化评价;然后统计1000组样本中各单项方法的评价值与真值的误差平方和,据此计算各单项评价方法在组合评价方法中所占的权重;最后利用权重值对7种单项评价值进行加权平均组合,从而得到方差大小加权法的组合评价结果.经全国30个湖泊水体实测水质资料验证,方差大小加权法能有效降低单项评价方法的不确定性.  相似文献   

9.
企业核心能力与企业综合竞争能力是两个不同的概念,对二者进行评判、识别和诊断的方法也不尽相同,但现有关于企业核心能力评判的研究,普遍借用了企业综合竞争力评价的方法和体系,从而使研究的结论过于宽泛,可操作性不强。本文从企业核心能力与企业竞争力的内涵差别出发,辨析了二者研究的差弄,指出了企业核心能力评判研究的特点、方法及其现实意义。  相似文献   

10.
根据国防科研院所项目管理的特点,依据项目管理评价指标体系设置原则和项目管理知识体系,提出国防科研院所项目管理能力评价指标,并采用模糊偏好关系群决策的原理和方法对指标进行筛选,建立国防科研院所项目管理能力评价指标体系。在此基础上,运用评价指标体系对A研究所的项目管理能力进行实证分析,有效显示了其项目管理能力水平和主要不足之处。  相似文献   

11.
This paper puts forward the hypothesis that the distinctive features of quantum statistics are exclusively determined by the nature of the properties it describes. In particular, all statistically relevant properties of identical quantum particles in many-particle systems are conjectured to be irreducible, ‘inherent’ properties only belonging to the whole system. This allows one to explain quantum statistics without endorsing the ‘Received View’ that particles are non-individuals, or postulating that quantum systems obey peculiar probability distributions, or assuming that there are primitive restrictions on the range of states accessible to such systems. With this, the need for an unambiguously metaphysical explanation of certain physical facts is acknowledged and satisfied.  相似文献   

12.
Summary It was found that some ciliates,Stentor, Spirostomum andBlepharisma, which can contract rapidly like the stalks of Vorticellidae, have Ca2+-binding proteins that are very similar to spasmins, in the immunological sense. The presence of spasmins in other Protozoa and in some Metazoa was also investigated.  相似文献   

13.
A part of the gene coding for a halophilic serine protease from a halophilic archaeumHaloferax mediterranei R4 was amplified by PCR and its 672 nucleotide sequence was determined. Tentative translation to the amino acid sequence suggested that the enzyme was quite similar to halolysin produced by another halophilic archaeum strain 172P1. Nucleotide sequences of 16S rRNA encoding genes from 9 halophilic archaea were determined. Alignment of 19 sequences known so far showed that there are more than 20 positions carrying bases or deletions specific for each halobacterial genus:Halobacterium, Haloarcula, Haloferax, andHalococcus.  相似文献   

14.
Summary Recent data on the immunologication of regulatory peptides and related propeptide sequences in endocrine cells and tumours of the gastrointestinal tract pancreas, lung, thyroid, pituitary (ACTH and opioids), adrenals and paraganglia have been revised and discussed. Gastrin, xenopsin, cholecystokinin (CCK), somatostatin, motilin, secretin, GIP (gastric inhibitory beenrevised and discussed. Gastrin, xenopsin, cholecystokinin (CCK), somatostatin, motilin, secretin, GIP (gastric inhibitory polypeptide), neurotensin, glicentin/glucagon-37 and PYY (peptide tyrosine tyrosine) are the main products of gastrointestinal endocrine cells; glucagon, CRF (corticotropin releasing factor), somatostatin, PP (pancreatic polypeptide) and GRF (growth hormone releasing factor), in addition to insulin, are produced in pancreatic islet cells; bombesin-related peptidesare the main markers of pulmonary endocrine cells; calcitonin and CGRP (calcitonin gene-related peptide) occur in thyroid and extrathyroid C cells; ACTH and endorphins in anterior and intermediate lobe pituitary cells, -MSH and CLIP (corticotropoin-like intermediate lobe peptide) in intermediate lobe cells; met- and leu-enkephalins and related peptides in adrenal medullary and paraganglionic cells as well as in some gut (enterochromaffin) cells; NPY (neuropeptide Y) in adrenalin-type adrenal medullary cells, etc.. Both tissue-appropriate and tissue-inappropriate regulatory peptides are produced by endocrine tumours, with inappropriate peptides mostly produced by malignant tumours.  相似文献   

15.
Summary In vitro and in vivo data on the benzimidazoline compound indicate anthelmintic potential when introduced directly into the abomasum.  相似文献   

16.
Cognition wars     
In what kinds of physical systems can cognition be realized? There are currently competing answers among scientists and theorists of cognition. There are many plant scientists who maintain that cognition can be realized in plants. There are biological scientists who maintain that cognition is materially realized in bacteria. In this paper, I will present the basis for such claims and evaluate them and discuss the future for theories of the metaphysical basis of cognition in the cognitive sciences.  相似文献   

17.
Summary Monarch butterflies sequester cardenolides from their larval host plants in the milkweed genusAsclepias for use in defense against predation. Of 108Asclepias species in North America, monarchs are known to feed as larvae on 27. Research on 11 of these has shown that monarchs sequester cardenolides most effectively, to an asymptote of approximately 350 g/0.1 g dry butterfly, from plants with intermediate cardenolide contents rather than from those with very high or very low cardenolide contents. SinceAsclepias host plant species are distributed widely in space and time across the continent, monarchs exploit them by migration between breeding and overwintering areas. After overwintering in central Mexico, spring migrants east of the Rocky Mountains exploit three predominantAsclepias species in the southern USA that have moderately high cardenolide contents. Monarchs sequester cardenolides very effectively from these species. First generation butterflies are thus well protected against predators and continue the migration north. Across the northern USA and southern Canada most summer breeding occurs on a fourthAsclepias species and in autumn most of these monarchs migrate back to Mexican overwintering sites. The ecological implications of this cycle of cardenolide sequestration for the evolution of monarch migration are discussed.  相似文献   

18.
The fate of environmental pollutants — the various isotopes of elements, and inorganic or organic compounds — is a fundamental aspect of ecology and ecotoxicology, and bioaccumulation is a phenomenon often discussed in this context. Human activities have drastically altered natural concentrations of many substances in the environment and added numerous new chemicals. An understanding of the processes of bioaccumulation is important for several reasons. 1) Bioaccumulation in organisms may enhance the persistence of industrial chemicals in the ecosystem as a whole, since they can be fixed in the tissues of organisms. 2) Stored chemicals are not exposed to direct physical, chemical, or biochemical degradation. 3) Stored chemicals can directly affect an individual's health. 4) Predators of those organisms that have bioaccumulated harmful substances may be endangered by food chain effects. While former theories on the processes of bioaccumulation focused on single aspects that affect the extent of accumulation (such as the trophic level within the food chain or the lipophilicity of the chemical), modern theories are based on compartmental kinetics and the integration of various environmental interactions. Concepts include results from quantitative structure-activity relationships (QSAR), pharmacokinetics, ecophysiology and general biology, molecular genetic aspects and selection, and finally the structure of communities and man-made alterations in them.  相似文献   

19.
It has been suggested that a common sex pheromone composition may account for interspecific sexual interactions observed with certain moths in the Arctiidae. In this study, it is demonstrated that the sex pheromones released by females of the Scarlet Tiger Moth,Callimorpha dominula L., and the Cinnabar Moth,Tyria jacobaeae L., have similar activities and elute at the same retention time on analysis by coupled gas chromatography (GC)-electrophysiology with males from each species. Peak enhancement on GC, chiral GC and coupled GC-mass spectrometry using authentic compounds show that the sex pheromone for bothC. dominula andT. jacobaeae is (3Z,6Z,9S,10R)-9,10-epoxyheneicosa-3,6-diene.  相似文献   

20.
Summary Fruit and leaf initiation by 26 trees representing five stranglerFicus species in the subgenusUrostigma were monitored for 5–8 years in a seasonal lowland forest of central Panamá. Individual trees of each species initiated fruit in synchronized crops. High variation in the number of crops, intervals between crops and dates of crop initiation indicate that these species, like species in the subgenusPharmacosycea, initiate fruit crops the year around. Nevertheless, mean crop initiation dates for four of five species fell within the four-month dry season. Similarly, all species produced new leaf flushes throughout the year, however, mean leaf flush dates of all species fell within the first three months of the dry season.  相似文献   

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