Interactions among special embed-solitons for the (3+1)-dimensional Burgers equation

With the help of a modified mapping method and a new mapping method, we re-study the （3＋1）-dimensional Burgers equation, and derive two families of variable separation solutions. By selecting appropriate functions in the variable separation solution, we discuss the interaction behaviors among taper-like, plateau-type rings, and rectangle-type embed-solitons in the periodic wave background. All the interaction behaviors are completely elastic, and no phase shift appears after interaction.

Embed-Solitons and Their Evolutional Behaviors of (3+1)-Dimensional Burgers System

With the help of an extended mapping approach and a linear variable separation method,new families ofvariable separation solutions with arbitrary functions for the(3+1)-dimensional Burgers system are derived.Based onthe derived exact solutions, some novel and interesting localized coherent excitations such as embed-solitons are revealedby selecting appropriate boundary conditions and/or initial qualifications.The time evolutional properties of the novellocalized excitation are also briefly investigated.

Technique of Embedding Depth Maps into 2D Images

This paper proposes a new technique that is used to embed depth maps into corresponding 2-dimensional （2D） images. Since a 2D image and its depth map are integrated into one type of image format, they can be treated as if they were one 2D image. Thereby, it can reduce the amount of data in 3D images by half and simplify the processes for sending them through networks because the synchronization between images for the left and right eyes becomes unnecessary. We embed depth maps in the quantized discrete cosine transform （DCT） data of 2D images. The key to this technique is whether the depth maps could be embedded into 2D images without perceivably deteriorating their quality. We try to reduce their deterioration by compressing the depth map data by using the differences from the next pixel to the left. We assume that there is only one non-zero pixel at most on one horizontal line in the DCT block because the depth map values change abruptly. We conduct an experiment to evaluate the quality of the 2D images embedded with depth maps and find that satisfactory quality could be achieved.

三维标测系统指导儿童心律失常射频消融治疗

目的探讨Carto系统和Ensite系统标测指导儿童心律失常射频消融(RFCA)的有效性、安全性。方法 22例心律失常患儿,包括9例房性心动过速(AT),4例房室折返性心动过速(AVRT),5例右室室性早搏(PVC),4例特发性室性心动过速(IVT),在Carto系统或Ensite系统三维标测导航下行RFCA治疗。结果所有病例均能准确找到消融靶点,消融完毕后心动过速均未能诱发,术中无发生严重并发症。所有病例平均随访6～24个月,Ensite Array系统组1例AT病例复发,可用药物控制。结论 Carto系统和Ensite系统标测指导儿童心律失常RFCA治疗安全可行,尤其适合于疑难复杂、血流动力学不稳定或不持续的心律失常的RFCA治疗。