This article is an attempt to identify the essence of new positivism, described by Ludwik Ehrlich as a method of interpretation of international law. The evolution of his views on international law is examined with respect to the place of this method from the beginning of 1920s until his retirement in 1961. The article expounds on both the theoretical and methodological aspects of new positivism, according to which judicial decisions should be taken into account in addition to international treaties and customs for the determination of international law. The question of the obligatory force of international law is discussed as being related to the principle of good faith, which is at the core of Ehrlich’s views on international law. The article offers suggestions on how the method of new positivism might be used and what tasks it can fulfil today. It also makes an attempt to critically analyse Ehrlich’s method and to characterize it both in general and in the context of the theory of international law.

The paper presents the line moments of edge contour detected in an image as the high level features which are useful for surface matching. It has been proved that line moments do not depend on scale and rotation in transformation and they are sensitive to small changes of line erroneously extracted. Therefore, line moments are the useful tools in the process of feature-based matching, which can be used for merging (comparing) two surfaces derived with different sensors for the same terrain scene. In order to receive a line in an image, the edge pixels of terrain contour have to be detected and then linked into a line. The paper also focuses on the problem of using wavelet transform for automatic detection of edge pixels. The suggestion of 3-D line moments for surface matching has been presented in the section 5.

The aim of this study is to find the cost design of RC tension with varying conditions using the Artificial Neural Network. Design constraints were used to cover all reliable design parameters, such as limiting cross sectional dimensions and; their reinforcement ratio and even the beahviour of optimally designed sections. The design of the RC tension members were made using Indian and European standard specifications which were discussed. The designed tension members according to both codes satisfy the strength and serviceability criteria. While no literature is available on the optimal design of RC tension members, the cross-sectional dimensions of the tension membersfor different grades of concrete and steel, and area of formwork are considered as the variables in the present optimum design model. A design example is explained and the results are presented. It is concluded that the proposed optimum design model yields rational, reliable, and practical designs.