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861.
862.
地图图书产品精品化战略的实施 总被引:1,自引:0,他引:1
论述了地图图书精品化的必要性以及精品地图、图书的策划和出版 ,提出了地图精品化战略的实施办法。 相似文献
863.
864.
为建立城市经济社会与环境协调发展的多目标决策模型,考虑了模型特点,数学结构以及模型的求解方法,据此,建立了西安市2000年经济、社会与环境协调发展的多目标决策模型,应用交互STEM方法,实现分析者和决策者连续交互求解,最后得到一组满意结果。 相似文献
865.
866.
Michael R. Walls 《Natural Resources Research》1996,5(3):181-192
Petroleum exploration companies enter the twenty first century facing an increasingly competitive and risky environment. Under those circumstances, there is a growing need for better systematic decision-making that explicitly embodies the firm's desired goals and resource constraints. Computer-aided decision making, or decision support systems (DSS), provide an aid for those exploration management problems that are large, complex, unstructured, and involve management mudgment. Almost every present day DSS falls into one of two general classes. Vehicle DSSs such as linear/nonlinear programming models and other optimization routines, propose and impose specific methodologies to the decision-maker. On the other hand, toolbox DSSs, such as simulation programs, statistical functions, and graphical packages, are generally flexible in enabling their users to employ a variety of approaches and tools for their decision tasks but provide little guidance on both problem representation and investigation. This paper describes the development of a hybrid DSS model that combines the advantages of both the vehicle and toolbox systems components to provide a comprehensive approach to exploration planning from geological development through the capital allocation process. The Exploration Decision Support System (EDSS) preserves the flexibility of the toolbox system while enriching the problem-solving strategies available to the firm. The central objectives for developing an EDSS framework are: (1) better decisions about resource allocations; (2) more systematic understanding of the factors affecting exploration decisions; (3) improved communication about E&P performance objectives and constraints at all levels of decision-making; and (4) an explicit vehicle for continuous improvement of the petroleum exploration firm's decision-making process. The EDSS model can guide geological and exploration managers toward a more formal evaluation of projects, provide insight into the impact of competing choice alternatives, and significantly improve the quality of exploration decisions. 相似文献
867.
依据以场求源,中、短、临逐步逼近的科学思路,在总结了华北地区6级以上地震的基础上,提出了进行短临预报必须具备的背景依据,前兆异常指标和地震三要素的判定方法。 相似文献
868.
Qi-Jia Zou 《地震学报(英文版)》1993,6(3):739-747
The issuance of an earthquake prediction must cause widespread social responses. It is suggested and discussed in this paper
that the comprehensive decision issue for earthquake prediction considering the factors of the social and economic cost. The
method of matrix decision for earthquake prediction (MDEP) is proposed in this paper and it is based on the risk matrix. The
goal of decision is that search the best manner issuing earthquake prediction so that minimize the total losses of economy.
The establishment and calculation of the risk matrix is discussed, and the decision results taking account of economic factors
and not considering the economic factors are compared by examples in this paper.
The Chinese version of this paper appeared in the Chinese edition ofActa Seismological Sinica,15, 232–238, 1993. 相似文献
869.
870.
Xu Daoyi Wang Xiangnan Zhou ShengkuiInstitute of Geology SSB Beijing ChinaCenter for Analysis Prediction SSB Beijing China 《中国地震研究》1994,(4)
A theory on information prediction process proposed by Weng Wenpo(1991)is applied to the earthquake prediction decision process.Four cycles represent the theory(conception),earthquake prediction decision result,anomalies,and earthquake assemblage,respectively.The interception and overlapping of the four cycles indicate different combinations,resulting in formation of 13 regions.In the case of decision conclusion on earthquake to occur,seven decision results of different characters are distinguished.The six other results were obtained in the case of absence of decision.Results of four characters show correct decision on earthquake to occur and those of three characters show the erroneous decision on earthquake to occur.Until now,theories of earthquake prediction have been incomplete,and the coincidence ratio of decision on earthquake to occur is also considerably low.Systematic analysis of the decision process is beneficial to understanding the causes for missing,virtual,pseudo,false,and correct earthqua 相似文献