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Zhang Y.,Xian Jiaotong University | Belic M.R.,Texas A&M University at Qatar | Zheng H.,Xian Jiaotong University | Chen H.,Xian Jiaotong University | And 2 more authors.
Optics Express | Year: 2014

We investigate numerically interactions between two in-phase or out-of-phase Airy beams and nonlinear accelerating beams in Kerr and saturable nonlinear media in one transverse dimension. We discuss different cases in which the beams with different intensities are launched into the medium, but accelerate in opposite directions. Since both the Airy beams and nonlinear accelerating beams possess infinite oscillating tails, we discuss interactions between truncated beams, with finite energies. During interactions we see solitons and soliton pairs generated that are not accelerating. In general, the higher the intensities of interacting beams, the easier to form solitons; when the intensities are small enough, no solitons are generated. Upon adjusting the interval between the launched beams, their interaction exhibits different properties. If the interval is large relative to the width of the first lobes, the generated soliton pairs just propagate individually and do not interact much. However, if the interval is comparable to the widths of the maximum lobes, the pairs strongly interact and display varied behavior. © 2014 Optical Society of America. Source


Zhang Y.,Xian Jiaotong University | Beliae M.,Texas A&M University at Qatar | Wu Z.,Xian Jiaotong University | Zheng H.,Xian Jiaotong University | And 2 more authors.
Optics Letters | Year: 2013

We investigate numerically the interactions of two in-phase and out-of-phase Airy beams and nonlinear (NL) accelerating beams in Kerr and saturable NL media, in one transverse dimension. We find that bound and unbound soliton pairs, as well as single solitons, can form in such interactions. If the interval between two incident beams is large relative to the width of their first lobes, the generated soliton pairs just propagate individually and do not interact. However, if the interval is comparable to the widths of the maximum lobes, the pairs interact and display varied behavior. In the in-phase case, they attract each other and exhibit stable bound, oscillating, and unbound states, after shedding some radiation initially. In the out-of-phase case, they repel each other and, after an initial interaction, fly away as individual solitons. While the incident beams display acceleration, the solitons or soliton pairs generated from those beams do not. © 2013 Optical Society of America. Source


Jin X.,Xian University of Arts and Science
Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry | Year: 2014

A new luminescent Cd(II) coordination polymer, namely [Cd 3(btc)2(bix)2)]n ·2nH 2O (1 H3btc = 1, 3, 5-benzenetricarboxylic acid, bix = 4,4′-bis(imidazol-1-ylmethyl)benzene), has been successfully synthesized and structurally characterized. Single-crystal X-ray analysis reveals that 1 is a three-dimensional (3D) complicated framework and can be simplified into a (4, 5, 5)-connected topological network based on three unequivalent nodes. In addition, the luminescent property of this compound was also investigated in the solid state at room temperature. Copyright © Taylor & Francis Group, LLC. Source


Quan Y.,Xian University of Arts and Science
Proceedings of the 2010 5th IEEE Conference on Industrial Electronics and Applications, ICIEA 2010 | Year: 2010

According to the temporal characteristic and the spatial characteristic of video sequence, a novel recognition method of sign language spatio-temporal appearance modeling is introduced for the vision-based multi-features classifier of Chinese sign language recognition. The obvious advantage with such a novel approach is that we can exclude some skin-like object and tracking the moving recognized hand more precisely in the sign language video sequence. Experiments demonstrate that this new modeling method is feasible and robust. At first, dynamic sign language appearance modeling is done, and then classification method of SVMs for recognition is brought into use. Experimentation with 30 groups of the Chinese manual alphabet images is conducted and the results prove that this appearance modeling method is simple, efficient, and effective for characterizing hand gestures, and the SVMs method has excellent classification and generalization ability in solving learning problem with small training set of sample in sign language recognition. The experimentation shows that linear kernel function is suitable for sign language recognition, and the best recognition rate of 99.7% of letter 'F' image group is achieved. © 2010 IEEE. Source


Prenatal exposure to ethanol has been shown to increase the risk of anxiety in offspring. Here, we tested the effect of prenatal ethanol exposure on adult male mandarin voles (Microtus mandarinus). We examined anxiety-like behavior in the open field and elevated plus-maze tests in males exposed to ethanol prenatally. One control group was not exposed to ethanol or saline, while another control group was exposed to saline. At the age of 90. days, males were tested and levels of serum testosterone, androgen receptor immunoreactive neurons (AR-IRs) and arginine vasopressin immunoreactive neurons (AVP-IRs) were measured. Animals exposed to ethanol spent less time in the center of the chamber, covered less distance and conducted fewer crossings in the open-field test. These animals also spent less time and conducted fewer crossings in the open arms. However, they spent more time and made more entries in the closed arms, and traveled less total distance during the elevated plus-maze test, compared to the control voles. Serum T was lower in the ethanol group, and the AR-IR number in the bed nucleus of the stria terminalis (BNST), medial preoptic area (mPOA) and medial amygdaloid nucleus (MeA) was significantly lower. The number of AVP-IRs in the paraventricular nucleus (PVN) and supraoptic nucleus (SON) of the ethanol group was higher than that of the control groups. Our findings suggest that prenatal ethanol exposure may lead to reduced serum T levels, decreased AR and increased AVP in the CNS and result in the development of anxiety-like behaviors. © 2014. Source

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