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- Bassin, Mark, 1953-
(författare)
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地理的不确定性： 关于俄罗斯、欧洲和亚洲的四个论题
- 2010
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Ingår i: Eluosi Yanjiu = Russian Studies (Shanghai). - Shanghai. - 1009-721X. ; 164:4, s. 58-70
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Tidskriftsartikel (refereegranskat)abstract
- English Title: "Geographical Uncertainties: Four Theses on Russia, Europe and Asia"Traditionally accepted explanations of the question of whether Russia belongs to Europe or Asia include: Russia is a European country; Russia is different from Asia; Russia is a Eurasian country. Each of these views contains some truth, but all of then need to be further refined. The following theses will contribute to further understanding of the Russia’s belonging to Europe or Asia: 1) Russia is not only a European country, but is also a European empire. 2) Radical advocates of Eurasian doctrine do not oppose European nature of Russia, but speak against the view that Russia is an empire. 3) The advocates of Eurasian doctrine claim thatRussia is a part of Eurasia and not Asia. Advocates of Eurasian doctrine see Eurasia as a civilization completely different from either Europe or Asia. 4) The advocates of Eurasian doctrine view Russia — Eurasia as a potential colony, and Russia's mission is to be an anti-colonial leader.
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| 2. |
- Bengtson, Arne, et al.
(författare)
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Expert systems for prediction of corrosion properities of Zn-based coatings from the chemical analysis
- 2012
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Ingår i: Yejin Fenxi/Metallurgical Analysis. - 1000-7571. ; 32:4, s. s.1-5
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of the work is to develop a general method, to predict the corrosion resistance of Zn-based coatings, expressed as total mass loss in an accelerated salt spray test. The method is to be based on just three analytical parameters; the total coating weights of Zn, Al and Mg. The reason for this restriction is that determination of these three parameters is possible in on-line analysis. The predicted corrosion resistance could then be included in a process/quality control system. Accelerated corrosion tests have been carried out by Swerea KIMAB IC (Institut de Corrosion) in Brest, and CRM in Belgium. Test were run according to the Renault ECC1 test D172028/-C (12 weeks), and with an accelerated cyclic corrosion test developed by CRM. The materials were divided into four corrosion classes according to total mass loss. All corrosion experiments show clearly the well documented positive influence of magnesium and aluminium. In relation to the masses of these elements in the coatings, the influence of both elements is considerably higher than the influence of zinc alone. For this reason, a new quantity is introduced, called "equivalent Zn coating weight". This quantity is a linear combination of the coating weights of zinc, aluminium and magnesium. A model for prediction of corrosion resistance was developed with the expert system, based on a combination of regression analysis and a "decision tree" algorithm. The model was able to correctly classify 25 out of 27 materials based on just the three analytical parameters mentioned above: the total coating weights of zinc, aluminium and magnesium. In conclusion, the approach shows that an accurate prediction of the corrosion behaviour is possible even on-line. For purposes of material development, the expert system can also be expanded to include additional analytical parameters.
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| 3. |
- Bengtson, Arne, et al.
(författare)
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Rapid inclusion characterisation by pulse distribution analysis optical emission spectroscopy-recent development
- 2013
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Ingår i: Yejin Fenxi/Metallurgical Analysis. - 1000-7571. ; 33:1, s. s.7-12
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Tidskriftsartikel (refereegranskat)abstract
- The purpose of the work is to further develop and validate the optical emission method pulse distribution analysis (PDA) for rapid inclusion characterisation in steel production. The experimental work was focused on investigation of several operational parameters: spark energy, spark frequency and time gating of signal acquisition. The results showed that a low spark energy improves the detection limit, but at the expense of measuring statistics due to a smaller sample volume. The measuring frequency proved to have no significant influence on the analytical results, but several existing instruments cannot handle the highest spark frequencies above about 300 Hz in PDA mode due to limitations in the electronics. Investigation of time gating (TRS) gave only a marginal improvement in the detection limit of Si outliers above the metallic content. The work also revealed that there is a risk to detect "false" outliers due to asymmetric intensity distributions. This has resulted in the development of more advanced algorithms for outlier detection, increasing the accuracy of the method. Another limitation found is that the particle number density must not exceed about 10 000 inclusions/mm3 for the method to effectively detect single inclusions. A method to overcome this limitation has been suggested, but not yet evaluated. The accuracy of quantitative determination of the Al content in inclusions has been verified by reference methods. In conclusion, it has been demonstrated that state-of-the-art PDA is a very powerful technique for rapid inclusion characterisation in steels. Furthermore, the speed of analysis is sufficiently high for process feedback and controllable.
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| 7. |
- Chan, Lih Shing, et al.
(författare)
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Sexualized Female Bodies : Gender Implications on the Characterization of Lengmo in Hong Kong Print Media
- 2012
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Ingår i: Hong Kong Journal of Social Sciences. - 1021-3619. ; 42:Spring/Summer, s. 83-96
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Tidskriftsartikel (refereegranskat)abstract
- In recent years, lengmo has emerged as a popular and controversial subject in Hong Kong society. Literally meaning naïve young model, lengmo is a relatively new occupation that allows young women who lack the figure of professional models to enter the entertainment industry. These young women, mostly in sexy appearance, become a social phenomenon propelled by local print media. This paper analyzes how Hong Kong print media characterize lengmo by endorsing them as sexualized subjects. These characterizations imply the discourse of sexualizing female bodies. Although seemingly pushing the expression of female sexuality into social spaces, they do not liberate women in pursuit of sexual autonomy. Such implication entails the patriarchal ideology in which the operation of local print media is grounded.
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| 8. |
- Chen, Xiangrong, 1982, et al.
(författare)
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Study on conducting characteristics of electrical trees in cross-linked polyethylene cable insulation
- 2012
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Ingår i: Wuli Xuebao/Acta Physica Sinica. - : Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences. - 1000-3290. ; 61:8, s. Art. no. 087701-
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Tidskriftsartikel (refereegranskat)abstract
- The conducting characteristics of two typical electrical trees in cross-linked polyethylene (XLPE) cable insulation are studied by a combination of optical microscopy observation, partial discharge measurement and con-focal Raman spectroscopy analysis. Although they are grown under similar conditions, these two trees display very different shapes. One is a typical branch-pine tree grown at 9 kV, and the other is a branch tree grown at 11 kV. The growth and the partial discharge regularities show obvious differences. The disordered graphitic carbon is condensed in the main tree channels of the branch-pine tree. From the relative intensity of the graphitic carbon G band to D band, the graphitic domain is estimated to be about 8 nm in size. The tree channel resistance per unit length is less than 10 Ω· μm-1, which is sufficient to prevent the partial discharge from developing within the tree structure. The branch-pine tree shows the features of the conducting tree. The fluorescence background is observed in the channels of branch tree, which shows the existence of the products of the material degradation, but no disordered graphitic carbon is observed in these tree channels. These tree channels display obvious non-conducting characteristics, which is not sufficient to prevent the continuous effect of the partial discharges. Finally, a single channel growth model is proposed for the conducting and non-conducting trees grown in XLPE cable insulation. Based on the equivalent circuit theory, the growth mechanisms of the two trees with different conducting characteristics in XLPE cable insulation are discussed.
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| 10. |
- Engström, Arne, 1953-, et al.
(författare)
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Problems and Improvement of the Formulations of Mathematics Teaching Objectives : An Example from the Three Dimensional Mathematics Teaching Objectives in Junior High School
- 2014
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Ingår i: Journal of Mathematics Education. - Tianjin : Tianjin Normal University. - 1004-9894. ; 23:5, s. 23-26
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Tidskriftsartikel (refereegranskat)abstract
- On the basis of the theory of teaching objectives and the practice of mathematics teaching objectives formulating, we established a framework for analyzing mathematical teaching objectives. Based on this analytical framework, we analyzed the teaching mathematics objectives that formulated by junior school mathematics teachers from the whole structure and the specific formulations, and found some problems about formulations of mathematics teaching objectives. Finally we introduced the basic process and gave some examples about improving the quality of mathematics teqaching objectives.
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