The invention discloses an InP quantum point preparing method, comprising the steps of:(1) mixing InCl3 with trioctylphosphine oxide, and preserving heat at 90-110DEG C to prepare a solution whose In content is 0.1-0.3mol/L;(2) raising temperature to 130-180DEG C, and charging argon gas;(3) injecting PSi(CH333 into InCl3-TOPO compound in the molar ratio of 1 to 1-1 to 2;(4) when the solution color turns into transparent red or orange, raising temperature to 260-270DEG C and preserving heat;(5) lowering temperature to 90-110DEG C and injecting dodecyl amine, decyl amine or mercaptan;(6) dissolving reacting mixture in nonpolar solvent to form transparent colloidal solution, then adding in polar solution until the colloidal solution is muddy, and centrifugally separating and obtaining deposits and supernatant; and (7) centrifugally separating the supernatant, where the above steps (1)-(5) are performed.

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From Poisson matrix, we can observe volume-preserving vector fields. By using Geiges-Gonzalo's existence of contact circle Theorem [3] , we show the existence of volume-preserving circle on3-manifolds which says that every3-manifold admits two linear independent vector fields preserving a same volume form.

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We present two methods for generating a segment of circular arc by the vector valued continued fractions. Based on this method we construct a parametric rational arc spline that is GC〓 continuity. By adjusting the given tangent vector, this parametric rational arc spline also has convexity preserving property and monotonicity preserving property.

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This paper researches linear maps preserving orthogonality,obtains the linear maps preserving othrogonality,it is either a rank -declining or rank -keeping map or a map with nilpotent element in its codomain.

利用分塊成向量的方法證明了MnMn(F為域F上所有n×n矩陣構(gòu)成的乘法半群上的n×n擬正交矩陣組至多含有n個矩陣亚洲欧美日韩视频一区，利用方程組的解的理論證明了Mn中與給定矩陣A構(gòu)成兩兩擬正交矩陣組的矩陣個數(shù)不超過n-Rank+1，從而得到Mn上保持?jǐn)M正交性的線性映射φ要么是降秩的或者保秩的映射ww.黄色视频，要么φ的值域中含有冪零元爱情岛亚洲品质自拍网址进入入口。

In this algorithm, first, a crowed comparison operator is used to sort and select individuals according to the characteristics of multi-objective optimization. Then, a non-uniform mutation operator is applied to the observation populations to preserve the convergency of the solutions and to improve the precision of local search. Finally, a diversity-preserving operator is employed to delete the observation populations for the purpose of preserving the solution diversity.

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Firstly, this paper discusses the representation theorems which based onunion-intersection-preserving mapping and intersection-union-preserving map-ping respectively, under the condition of which the membership degree's lattice isonly complete lattice.

本文首先討論在模糊集的值格僅為完備格時，分別基于并交映射和交并映射的模糊集表現(xiàn)定理北京一级毛片全过程。

This paper studies the invariant, which is the linear preserving problem based on generalized inverse of matrices. The generalized inverse of matrices and the research status of preserving problems of generalized inverse are outlined. In the basis of deeply understanding the basic knowledge of linear maps, the definition, characteristics of generalized inverse and decomposition of matrix, the author analyzes the decomposition form of preserving idempotence and preserving tripotence in the PID, then studies on the linear maps form of preserving group inverses of symmetric matrices.

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Objective To explore the feasibility and indication of sphincter-preserving surgery after rectal total mesorectal excision and the probability of preserving the function of sphincter after sphincter-preserving surgery in the radical resection of middle and low rectal cancer.

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Although any unimodality type partially expresses limited semantics less or more, video semantics are fully manifested only by interaction and integration of any unimodal. Video data comprises plentiful semantics, such as people, scene, object ,event and story, etc. A great deal of research has been focused on utilizing multi-modality features for better understanding of video semantics. Proposed in this paper is a new approach to detect semantic concepts in video using co-occurrence data embedding, SimFusion, and locality preserving projections from temporal associated co-occurring multimodal media data in video.

該方法對所提取視頻鏡頭的多模態(tài)底層特征亚洲一区网址，根據(jù)共生數(shù)據(jù)嵌入(co-occurrence data embedding)和相似度融合進(jìn)行多模態(tài)子空間相關(guān)性傳遞而得到鏡頭之間的相似度關(guān)系，接著通過局部不變投影(locality preserving projections)對原始數(shù)據(jù)進(jìn)行降維以獲得低維語義空間內(nèi)的坐標(biāo)日本久久枸一，再利用標(biāo)注信息訓(xùn)練分類模型青春小仙女jk白丝喷白浆，從而可對訓(xùn)練集外的測試數(shù)據(jù)進(jìn)行語義概念檢測，實現(xiàn)視頻語義信息挖掘黄色视频射了网站。

The method has extended the image unwarping capability of the existing methods for SVP omni-cameras to tolerate lens/mirror assembly imprecision, which is difficult to overcome in most real applications. A new method called "edge-preserving 8-directional two-layered weighting interpolation" is proposed for interpolating unfilled pixels in a perspective-view or panoramic image resulting from unwarping an omni-image taken by a non-SVP omni-camera.

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