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1.
随着勘探程度的深入,为了扩大四川盆地天然气勘探领域、寻找新的勘探接替区,四川盆地的勘探区域由盆内逐渐向盆缘延伸。在这种背景下,川东北地区须家河组二段相继取得新的勘探成果,但在勘探开发过程中逐渐暴露了诸如区块之间气井产能差异大,储层的碎屑组分、结构及厚度、物性、孔隙结构差异明显等问题,制约了勘探开发的步伐。针对上述问题,根据岩芯观察描述、分析化验资料及测井解释成果,从沉积、成岩方面入手,对比剖析了川东北龙岗和营山地区须二段储层特征的差异性及其成因,认为远离物源区和高能水体的反复淘洗是造成储层差异性的首要因素,强烈的压实作用和多期石英加大对储层差异性起关键作用,自生绿泥石衬边胶结和长石选择性溶蚀最终决定了储层差异性。从而解释了气藏勘探开发中遇到的诸多问题,对有效指导该区的下一步勘探开发工作具有重要意义。 相似文献
2.
蒋绍愚 《北京大学学报(哲学社会科学版)》2015,52(3):174-181
"浑言则同,析言则异"要根据语言的实际运用情况加以分析。有一个限定性义素不相同,可以是近义词,也可能是同义词。同义词形成的一个原因是一些不同地域、不同时代的词义相同的词进入到同一个语言系统中。反义词如果只是词义相反,而在语言运用中不作反义使用,就不是严格的反义词。 相似文献
3.
From the inception of the proportional representation movement it has been an issue whether larger parties are favored at
the expense of smaller parties in one apportionment of seats as compared to another apportionment. A number of methods have
been proposed and are used in countries with a proportional representation system. These apportionment methods exhibit a regularity
of order, as discussed in the present paper, that captures the preferential treatment of larger versus smaller parties. This
order, namely majorization, permits the comparison of seat allocations in two apportionments. For divisor methods, we show
that one method is majorized by another method if and only if their signpost ratios are increasing. This criterion is satisfied
for the divisor methods with power-mean rounding, and for the divisor methods with stationary rounding. Majorization places
the five traditional apportionment methods in the order as they are known to favor larger parties over smaller parties: Adams,
Dean, Hill, Webster, and Jefferson.
Received: 5 August 2000/Accepted: 24 October 2001 相似文献
4.
Uta Gerhardt 《The American Sociologist》2002,33(2):5-39
This article places an episode in the history of sociological theory into intellectual history in the twentieth century. The
perspective is chronological as well as contextual. The themes are two theoretical approaches, both embedded in both American
and German history, Parsonian Systems Theory and “Frankfurt School” Critical Theory. The chronology shown spanned mainly from
the 1940s to the 1960s. The context of the two theories is a period that is crucial in twentieth century history. The protagonists
of the two approaches were, in the 1940s, Americans and Germans exiled in the United States. In the 1950s, both approaches
were affected by McCarthyism in different ways. The 1960s, however, were the culmination. The dynamics of the two approaches
led into a schism which came into the open on the occasion of the 1964 German Sociology Conference in Heidelberg celebrating
Max Weber. The article shows the stages in the evolution of the schism, emulating three acts in a drama. The final split was
over whether Weber or Marx should be the classic whose oeuvre was to influence sociological thinking today. My aim is to exemplify
how these two authoritative approaches in sociological theory, far from escaping the vagaries and vicissitudes of their times,
were embedded in twentieth-century history. 相似文献
5.
In light of use by airline unions of partial-strike tactics, such as concerted refusals to bid for overtime work and so-called
” CHAOS” tactics involving unannounced refusals to fly after passengers have been ticketed and are ready to board, the authors
examine whether the Railway Labor Act (RLA) should be interpreted to permit employers to discipline employees for engaging
in such tactics, or whether these are a protected form of economic pressure. Although in many respects bargaining duties and
economic weapons under the RLA are read consonant with precedents under the National Labor Relations Act (NLRA) (which governs
all industries other than rail and air transport), there are a few decisions suggesting that during the period when self-help
may be resorted to, employees can engage in partial strike activities as long as they violate no court order but are subject
to permanent replacement in limited circumstances. These decisions, the authors submit, fail to take account of Supreme Court
decsions since the 1930s that some economic pressures by unions, such as slowdowns and sitins, may not violate the labor laws
but nor are they protected by those laws so as to immunize partial strikers from employer discipline. These decisions are
not based on unique features of the NLRA. Rather, they give recognition to the background assumptions of Congress that employers
may act to protect their property interests as long as they do not run afoul of NLRA or RLA protections and that employees
who engage in partial-strike activities are subject to employer discipline even where not strictly necessary to maintain operations.
Moreover, these tactics skew the bargaining process by giving employees an essentially risk-free gambit to pressure their
economic position through planned disruption of carrier operations.
Professor Estreicher is also labor and employment counsel to O’Melveny & Myers, LLP. The views expressed herein are the authors’
and should not be attributed to any organization. Hannah Breshin and Tom Jerman of O’Melveny & Myers, assisted the authors
with this article. We also thank Professor Herbert Northrup for his helpful comments. 相似文献
6.
蒋维静 《北京工商大学学报(社会科学版)》2005,20(5):97-100
在车辆保险条款费率改革之后的车险市场上,现实状况却与预计效果相差甚远。其主要原因是,对保险营销战略的忽视,没有以相应的保险营销战略为指导,使得营销战术在操作过程中显得盲目而跟从。针对以上问题,我们首先要做的是树立正确的保险营销观念,即重新审视营销战略在车辆保险中的作用,并在此基础上建立广义的产品观念;同时注重服务在车险营销中的作用;有效地进行市场细分和市场选择;最后对车险营销战略的具体实施即营销战术提出建议。 相似文献
7.
Astrid Orthey 《Gruppendynamik und Organisationsberatung》2005,36(1):23-32
How are social networks organized and how much structure and openess do they have? The ambiguity of networking and the grade of organization are discussed and described theoretically and with an authentic example. 相似文献
8.
解体之后的哲学在俄罗斯遭到了前所未有的冷落,它既面临着俄罗斯是否还需要哲学的问题,又面临着被终结的可能,但是俄罗斯哲学以自己一贯的优秀品质在低靡的社会现实中艰难地跋涉,关注着一些积极而有意义的同社会生活密切相关的问题。暂时摆脱意识形态束缚的俄罗斯哲学,更加清醒理智地期待哲学的美好未来。 相似文献
9.
Günter F. Müller 《Gruppendynamik und Organisationsberatung》2005,36(3):325-334
This paper outlines the conceptual bases, strategies, and psychological attributes of leadership by self-leadership. In addition, relations to other theories of leadership are drawn. Dimensions and correlates of self-leadership competence are described and discussed. Various approaches for developing self-leadership competence are discussed as well. 相似文献
10.
蒋乃华 《华中农业大学学报(社会科学版)》2002,(3):22-25
玉米在全球粮食市场上占据非常重要的地位。文章分析了20世纪90年代以来国际玉米市场的供求变化,研究了主要玉米进出口国特别是美国的玉米发展战略,并提出了开放经济条件下中国玉米经济发展的战略选择。 相似文献