This gives a geometric explanation for the appearance of pattern avoidance in the study of singularities of Schubert varieties.
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The main advantage of this method is the avoidance of singularities and distortions around poles, which occur in other approaches.
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Controlling the input of 137Cs in the sediments within the environmental capacity guarantees the sustainability of the current situation of the Daya Bay ecosystem and avoidance of a significant degradation of the system.
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The effects of these two extracts were tested on rats using the open field and passive avoidance tests upon intranasal administration of the extracts (ca.
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Only β-casomorphin-7 had an effect (negative) on passive avoidance conditioning.
In this paper, a new method of measurement for radar colli-sion avoidance is proposed. An equation of collision circle andcoordinates of collision point are given which are based on thetheorem that if the ratio of two distances from a point to twofixed points is a constant, the locus of that point is a circle.From the speed ratio field equation U (r,θ)=r/(r~2+r_i~2-2rr_icos(θ-θ_i))~(1/2)we obtain a formula——the gradient of speed ratio field dU/dn=r_i/(r~2+r_i~2-2rr_icos(θ-θi))~(1/2)which can be used t...
Along with the development of electronic computer, especially the wide application of microprocessor, marine radar for collision avoidance has been developing rapidly. Current radars for collision avoidance are generally designed on the basis of whar's known as "trial maneuver" by the navigator, so as to determine whether the intended action to avoid collision is safe and feasible, However, it would be better for the navigator to have a radar displaying the safety limits of own ship's course and...
Firstly, this article deals with the characteristics of radar observation, and then intends to make a Study on the general rules for collision avoidance, in accordance with the International Regulations for Preventing Collision at Sea, 1972. To go a step further, the author presents his view of the necessary actions to be taken in short range and long range collision avoidance with the aid of radar Reference has been made to the lessons obtained from the past collision accidents, as well as to t...