Inspired by the work of james r . holub on [ 11 ] , we come to some conclusions for the general traits , perturbation , alternatc dual of bcsselian frame , besides generalize some of stability result on riesz basis in view of [ 5 ] , [ 9 ] . we show some perturbation results of riesz frame by adding a slightly strong condition to the ordinary ones . also , we study alternate dual and disjoint for frames which contain a riesz basis and discuss their relations . there are four sections in this paper 受文献[ 11 ]的启发，探讨了besselian框架的一般性质、摄动、交错对偶，得到了一系列结果在[ 5 ] ， [ 9 ]的基础上推广了risez基的稳定性结果，得出了riesz框架满足摄动的条件。此外，研究了含riesz基框架的交错对偶及其不交性质，讨论了各种含riesz基框架的相互关系。
More specifically , the research provides an appropriate framework of entities among which causal relations are to hold ; it also develops a theoretical framework of event causation , under which the structures and elements of causal relations holding among these ontological entities can be described ; it gives a general representation tool for event causation supported by the ontological and theoretical frameworks , under which causal relations can be formalized as causal rules for practical reasoning , e . g . , predictive reasoning , in which nonmonotonicity , as well as the other general properties and the nature of elements involved , can be captured ; it constructs computational frameworks for abstract causal reasoning models , such as causal prediction , causal explanation , and causal diagnosis ; and it finally extends and utilizes these abstract reasoning models to formalize causal knowledge in specific domains to develop practical causal reasoning systems for ai research , e . g . , story understanding and legal reasoning . the research i s original from several aspects as follows : ( 1 ) the analysis of the internal structure of events provides a fundamental ontology for causal relations 具体地说，此项研究在以下几个方面做了工作：它对因果关系存在的实体给出了一个合适的框架；它建立了一个基于事件的因果关系的理论框架，在这个框架下因果关系的结构与因素能够被合理描述；它提供了一个得到本体论与因果理论支持的基于事件的因果关系的一般表达方式，使因果关系能够被形式化为在实际推理(例如预测推理)中应用的因果规则，并使因果关系的非单调性以及其它的一般性质得到体现；它构造了基于事件的因果关系的抽象推理模型，特别是因果预测、因果解释和因果诊断；最后它把因果推理模型推广应用到具体的领域以建立实际的ai系统，例如在故事理解和法律推理中的应用。
This article through to the enterprise core competitive ability general archery target research , has analyzed the enterprise core competitive ability connotation and the essence , has discussed the enterprise core competitive ability formation mechanism , and has entered the analysis using the swot analysis mentality to the clothing enterprise ' s development present situation , has studied the clothing enterprise core competitive ability analysis and the recognition with emphasis 本文通过对企业核心竞争力一般性质的研究,分析了企业核心竞争力的内涵和本质,探讨了企业核心竞争力的形成机理,并运用swot分析思路对服饰企业的发展现状进了分析,重点研究了服装企业核心竞争力的分析与识别。
The existence purpose and feature of state - owned enterprise differs from that of general enterprise , therefore , the accomplishment of state - owned enterprise should not be appraised unilaterally according to economic results , and it should be apprised in the light of the purpose of state - owned enterprise 国企由于存在的目的及性质特征不同于一般性质的企业，因而，对国企经营效绩的评价不能片面采用经济效益的标准来衡量，而应根据国企的目标来评价，评价企业达到和完成目标的程度。
