A 203-m-high gravity dam being built in earthquake-prone areas needs to be investigated very carefully to determine its dynamic responses, damage mechanism, and safety evaluation. The dynamic characteristics, seismic responses, failure mode, and safety evaluation of the above structure are presented through dynamic fracture test for small-scale model on shaking table. Because the strength of the model material is very low, the traditional strain gauge is also not easy to be glued to the surface of model. It is difficult to (...) measure the accurate strain data of small-scale model during testing. Therefore, Fiber Bragg Grating strain sensor is presented to obtain the strain of small-scale model during testing, due to its high sensitivity. The dynamic strain and residual strain are obtained with the FBG sensors embedded in model. The FBG sensor is adhered to model material completely and shows advantages of ease for installation, high sensitivity, and reliability compared with traditional resistance strain gauge. The model during testing is submitted with earthquake wave from the Chinese Code. In the experiment, the peak ground acceleration of the first crack in the model indicates the safety level of the gravity dam. The crack locations and forms determine the damageable part of gravity dam under intense earthquake. After the final analysis, the safety evaluation result of the gravity dam under strong earthquake is given in order to guide the implementation of the project. (shrink)
Coal texture is important for predicting coal seam permeability and selecting favorable blocks for coalbed methane exploration. Drilled cores and mining seam observations are the most direct and effective methods of identifying coal texture; however, they are expensive and cannot be used in unexplored coal seams. Geophysical logging has become a common method of coal texture identification, particularly during the CBM mining stage. However, quantitative methods for identifying coal texture based on geophysical logging data require further study. The support vector (...) machine, a machine-learning method, has received great interest due to its remarkable generalization performance, and it has been used to quantitatively identify hard and soft coal using geophysical logging data. In this study, four well-logging curves, the acoustic time difference, caliper log, density, and natural gamma, were used for coal texture analysis. Hard coal exhibited higher DEN, GR, lower CAL, and lower AC than soft coal. The accuracy rate of coal texture identification was highest when the linear kernel function was applied, and the maximum training accuracy rate was achieved when the penalty parameter value of the linear kernel increased to 1. The results of verification with a newly cored CBM exploration well indicated that the SVM-based identification method was effective for coal texture analysis. With the increasing availability of data, this method can be used to distinguish hard and soft coal in a coal-bearing basin under numerous sample learning conditions. (shrink)
Management ownership has ethical consequences because it has an interest alignment effect or an entrenchment effect. In this paper, we investigate the ethical consequences of management ownership in China using accounting conservatism as the direct measure of entrenchment and alignment between shareholders and managers. We argue and find that the ethical effect of management ownership differs significantly in firms with different ultimate controlling shareholders. Specifically, management ownership in non-state-owned enterprises has an alignment effect, while management ownership has less of an (...) alignment effect in state-owned enterprises than in NSOEs. These results show that the ethical consequences of management ownership are moderated by the nature of ultimate controlling ownership. (shrink)
The relationship between community and individual is the key issue in contemporary political philosophy and ethics. The concept of self seems very important for individualism, communitarianism and feminism when they respond to relationships, particularly when we have to situate selfhood in the conditions of modernity. Consequently, this paper can be divided into seven parts. First it introduces the debate about the concept of the self between individualism and communitarianism. Second, it discusses the feminist critique of this issue and analyses the (...) feminist concept of self, and then addresses modernity as the condition of women. Next it attempts to analyze how women situate themselves in the conditions of modernity. Then it discusses how Chinese women are reshaping their selfhood under the conditions of modernity, and finally draws some brief conclusions claiming that neither communitarian nor individualist self is adequate in contemporary society. Chinese women, it is argued, are expected to reshape their own selfhood resting on the positive side of Confucian ethics and a feminist concept of self. (shrink)
In two recent papers, Mr Robert Young maintains that all attempts by philosophers to bolster the-violation-of-law concept of miracles are bound to fail and propounds what he claims to be a novel non-reductivist concept of miracles which avoids the conceptual difficulties of the violation-model. His view of miracles is of god being ‘an active agent-factor in the set of factors which actually was causally operative’ [p. 123] in an event dubbed a miracle. God is put in among ‘the plurality of (...) causes’ [p. 122, S p. 33] that could determine the event, but if he acts in a miracle, then ‘his presence…alters the outcome from what it would have been if, contrary to fact , he had not been present’ [p. 122]. Young claims that his concept ‘is neither a violation of … laws nor is it a coincidental occurrence religiously interpreted’ [p. 122, S p. 33], and so it avoids the difficulties, which he thinks are faced by the violation-model, of having an intelligible notion of an occurrence of the physically impossible, and also the reductivism inherent in taking mere coincidences as miracles. He also suggests a procedure of settling the epistemological issue regarding particular alleged miracles, an inquiry he thinks he has made possible by having first given a sense to miracles. [p. 126]. (shrink)
Liu Ping discusses patriotism and nationalism in regard to culture and values and also the role of the prophetic voice in Chinese society. His provocative allegorical rewriting of a prophecy from the Biblical book of Amos, setting it in contemporary China, is pointedly political. Liu writes in the Chinese intellectual tradition of pointing out when a society or a country is on the brink of destruction.