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Based on the principle of surface development in differential geometry, the method of development for cone and tangent surface is given. Cone is developed in the unit ball way.

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The five methods are tested on a 2-D test function ,a straight airfoil and a sweepback airfoil. For the straight airfoil,the paper constructs its approximation models of structure disciplinary, aerodynamic disciplinary and stealth disciplinary.

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In this framework, image frame, audio and text are represented, which are the three modalities in video shots as data points by the 3rd-order tensor. Then a subspace embedding and dimension reduction method is proposed, which explicitly considers the manifold structure of the tensor space from temporal-sequenced associated co-occurring multimodal media data in video. It is called TensorShot approach. Transductive learning uses a large amount of unlabeled data together with the labeled data to build better classifiers. A transductive support tensor machines algorithm is proposed to train effective classifier. This algorithm preserves the intrinsic structure of the submanifold where tensorshots are sampled, and is also able to map out-of-sample data points directly. Moreover, the utilization of unlabeled data improves classification ability.

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The mathematical model of ruled helicoids on torus is constructed and two expression methods of ruled helicoids are discussed.

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Light propagation in the light-collimator is based on total internal reflection towards a light-exit window (4) of the light-collimator.

光準直器中的光傳播基于朝向光準直器的光出射窗(4)的全內反射進行。

So the main straight Dao and new-style great cutting Dao's fast subrogation tulwar of straight and narro style wouldn't prevail on a big scale for a long time.

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B Do unbent, straight wires suffice for sliding mechanics?

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Apart from this polarizing feature, these glasses serve the same purposes as any dark glasses, absorbing 50% of the incident light; in an unpolarized beam, half the light can be considered as polarized horizontally and half vertically, and only the vertically polarized light is transmitted.

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