Wireless Fractal Cellular Networks

With the seamless coverage of wireless cellular networks in modern society, it is interesting to consider the shape of wireless cellular coverage. Is the shape a regular hexagon, an irregular polygon, or another complex geometrical shape? Based on fractal theory, the statistical characteristic of the wireless cellular coverage boundary is determined by the measured wireless cellular data collected from Shanghai, China. The measured results indicate that the wireless cellular coverage boundary presents an extremely irregular geometrical shape, which is also called a statistical fractal shape. Moreover, the statistical fractal characteristics of the wireless cellular coverage boundary have been validated by values of the Hurst parameter estimated in angular scales. The statistical fractal characteristics of the wireless cellular coverage boundary can be used to evaluate and design the handoff scheme of mobile user terminals in wireless cellular networks.Comment: 16 pages, 4 figure

Attraction Propagation: A User-Friendly Interactive Approach for Polyp Segmentation in Colonoscopy Images.

The article raised a user-friendly interactive approach-Attraction Propagation (AP) in segmentation of colorectal polyps. Compared with other interactive approaches, the AP relied on only one foreground seed to get different shapes of polyps, and it can be compatible with pre-processing stage of Computer-Aided Diagnosis (CAD) under the systematically procedure of Optical Colonoscopy (OC). The experimental design was based on challenging distinct datasets that totally includes 1691 OC images, and the results demonstrated that no matter in accuracy or calculating speed, the AP performed better than the state-of-the-art

Stress reduction dependent on incident angles of carbon ions in ultrathin tetrahedral amorphous carbon films

We presented the combined experimental and simulation study on stress evolution as a function of incident angles of carbon ions for the ultrathin tetrahedral amorphous carbon films (ta-C). The residual stress was found about 3.6 +/- 0.1 GPa for the incident angle of C ions with range of 0 degrees-30 degrees, while it decreased significantly to 2.8 GPa with the incident angle of 60 degrees. Different with the previous reports, noted that in this case both the sp(3) content and mechanical properties of film were not deteriorated. Taking molecular dynamics simulation, it was in particularly concluded that the critical relaxation of distorted C-sp(3) bond lengths and bond angles played key role on the unusual stress reduction mechanism. The results provide a route to fabricate the ultrathin ta-C films with low stress and high hardness for the precision wear resistant applications. (C) 2014 AIP Publishing LLC

Genetic Diversity and Population Structure of Acanthochiton rubrolineatus (Polyplacophora) Based on Mitochondrial and Nuclear Gene Markers

Acanthochiton rubrolineatus (Cryptoplacidae, Neoloricata, Polyplacophora) has a narrow distribution range along the seacoasts of China, the Korean Peninsula and Japan. We collected 238 samples from eight localities along the Chinese coast, and analyzed the genetic diversity and population structure with COI, 16S-rRNA and 28S-rRNA gene sequences. All analyses based on combined sequences of COI and 16S-rRNA suggested that there was evident genetic differentiation between the northern populations (YT, WH, DL, QD, LYG) and southern populations (ZS, YH, XM) of A. rubrolineatus. The haplotype distribution pattern and genetic diversity based on 28S-rRNA sequences also supported the genetic divergence between the two groups. Both groups had experienced population expansion after the ice age of Pleistocene, and an additional population bottleneck had happened in the southern group in recent history, which led to low genetic diversity of mitochondrial DNA and abnormally high diversity of nuclear DNA in this group. Our results suggested that the protection on A. rubrolineatus is necessary, and the northern and southern group should be protected separately

Optical colonoscopy (OC) images with polyp.

<p>Optical colonoscopy (OC) images with polyp.</p

Contractual modifications of statutory matrimonial property regime

Marriage is a topic that more or less concerns all of us. Community property is a financial aspect of marriage which is inseparably tied to it. Despite it being a fundamental problem, it is not well known to the general public. For this reason the aim of this diploma thesis is to clearly and systematically summarize the issue of contractual marital property law. For better understanding, the thesis defines basic terms of statutory matrimonial property regime, and focuses on parts of community property of spouses. Attention is focused on the issue of usual family equipment, because it was removed from the matrimonial property law due to recodification, which then instituted a new matrimonial regime: The Separate Property Regime. Except for the statutory matrimonial property regime, spouses are allowed to negotiate different property regime by using a contract of modification of community property of spouses. The contractual matrimonial property regime represents a major part of this thesis. First, the thesis deals with contractual matrimonial property regime, and then it mainly focuses on types of matrimonial property contracts, its contents and its limitations. It pays significant attention to registration of matrimonial property contracts, especially to the new publicly accessible list of..

Comparison of preprocessing results.

<p>the top row: raw image; the middle row: preprocessing results; the bottom row polyp masks(the polyp is shown in white).</p

A schematic plot of the attraction propagation (AP).

<p>A schematic plot of the attraction propagation (AP).</p

Mean processing time per OC image on each database.

<p>Mean processing time per OC image on each database.</p

Overview of AP algorithm designed for CAD system.

<p>(A) Display screen of endoscopic diagnosis. (B) Display screen after starting the CAD system. (C) The seed placement automatic initialization base on white viewfinder in (B). (D) The segmentation result of AP.</p