基于早期认知视觉的图像轮廓提取

早期认知视觉是连接早期视觉和认知视觉的中间平台。与像素携带的弱的语义信息相比,提出了一种基于视觉基元的图像轮廓的表示方法。首先由早期认知视觉系统提取出图像的基元,基元是图片小块,有丰富的语义信息包括位置、方向、相位和三色值;通过基元的共色性和共线性得到图像的轮廓。实验结果表明,此方法能将图像的轮廓完好地提取出来,有效地保留了图像的必要信息并具有强抗噪性。由此得到的轮廓所具有的几何信息和表面信息能很好的用于物体模型的学习及未知物体的抓取等。

Investigations on Left Hand Cut Contribution to Determination of κ（700） Pole

The uncertainties of background contributions to J = 0 partial wave πK scattering phase shifts are carefully studied. We firstly point out that the circular cuts exhibit different characters in S1/1 and S3/2 waves. While the former contributes negatively to the scattering length parameter, the latter contributes positively, i.e., has a wrong sign. This fact indicates that short range force contribu tions to the phase shift are non-negligible in the exotic channel. Nevertheless, it is verified that the κ pole will be affected only slightly with respect to the theoretical uncertainty in estimating the left hand cut contributions.

The Public Health VS the People＇s Autonomy： Banning Smoking in Orthodox Jewish Community

Smoking is a worldwide problem. Research in recent years has shown us that smoking and second hand smoking can cause many diseases1. As a result of the understanding of the results of smoking, the house of legislator in Israel decided to legislate a law that people under the age of 18 cannot smoke and, a couple of years later, it decided to ban smoking in public places. The problem begins when the law is affecting the person＇s autonomy and the person＇s culture. More than four decades ago when the smoking habit began in Israel, no one knew what the influence would be. Now, although that information is available, the orthodox community in Israel is not exposed to the knowledge. Smoking in this community begins from Purima or from the Bar-Mitzvah3 and from the will of the young orthodox to rebel. This law raises a question： Is it ethical to deprive the young orthodox of the right to smoke？ Alternatively, is there a better way to stop the orthodox from smoking than only the regulation？ In this paper, the author will try to show that regulation alone will not help in the orthodox community, and we need to think on more options to make the orthodox more informed to smoking problems. The author thinks that the best way will be to educate the orthodox community from young age.

The electrochemical stability of ionic liquids and deep eutectic solvents

Room temperature ionic liquids （ILs） composed of cations and anions, as well as deep eutectic solvents （DESs） composed of hydrogen bond donors （HBDs） and hydrogen bond acceptors （HBAs）, are regarded as green solvents due to their low volatility. They have been used widely for electrochemically driven reactions because they exhibit high conductivity and excellent elec- trochemical stability. However, no systematic investigations on the electrochemical potential windows （EPWs）, which could be used to characterize the electrochemical stability, have been reported. In this regard, the EPWs of 33 ILs and 23 DESs have been studied utilizing cyclic voltammetry （CV） method and the effects of structural factors （cations and anions of ILs, and HBDs and HBAs of DESs） and external factors （electrode, water content） on the EPWs have been comprehensively investi- gated. The electrochemical stability of selected 1Ls comprising five traditional cations, namely imidazolium, pyridinium, pyr- rolidinium, piperidinium and ammonium and 13 kinds of versatile anions was studied. The results show that for ILs, both cati- on and anion play an important role on the reductive and oxidative potential limit. For a same IL at different working electrode, for example, glassy carbon （GC）, gold （Au） and platinum （Pt） electrode, the largest potential window is almost observed on the GC working electrode. The investigations on the EPWs of choline chloride （ChCl）, choline bromide （ChBr）, choline iodide （ChI）, and methyl urea based DESs show that the DES composed of ChCl and methyl urea has the largest potential window. This work may aid the selection of ILs or DESs for use as a direct electrolyte or a solvent in electrochemical applications.

Self-assembly and electrochromic property of electroactive tetraaniline-b-PEG diblock copolymer

A kind of amphiphilic rod-coil diblock copolymer consisting both of tetraaniline(TAni)and polyethylene glycol(PEG)blocks,TAni-b-PEG,was synthesized.The diblock copolymer shows excellent electrochromic properties,especially,in switching time and coloration efficiency compared with tetraaniline.TAni-b-PEG is able to self-assemble into spherical structure,which is attributed to the formation of conducting channels and increase of ion-exchange capacity of TAni-b-PEG,implying that a block copolymer with electrochromic block and high ionic conductive block simultaneously possesses improving electrochromic properties.

Scalar Resonance at 750 GeV as Composite of Heavy Vector-Like Fermions

We study a model of scalars which includes both the SM Higgs and a scalar singlet as composites of heavy vector-like fermions. The vector-like fermions are bounded by the super-strong four-fermion interactions. The scalar singlet decays to SM vector bosons through loop of heavy vector-like fermions. We show that the surprisingly large production cross section of di-photon events at 750 GeV resonance and the odd decay properties can all be explained.This model serves as a good model for both SM Higgs and a scalar resonance at 750 GeV.