The Experts below are selected from a list of 23880 Experts worldwide ranked by ideXlab platform

Zhu Zongwen - One of the best experts on this subject based on the ideXlab platform.

  • halogen free flame retardant plastic material
    2016
    Co-Authors: Zhu Zongwen
    Abstract:

    The invention discloses a halogen-free flame retardant plastic material. The halogen-free flame retardant plastic material is prepared from polypropylene and polymethacrylate serve as raw materials, and further comprises an inorganic filler, a plasticizer, a lubricating agent and an antioxidant. The components are metered based on the weight parts: 40 to 45 parts of polypropylene, 20 to 35 parts of polymethacrylate, 5 to 10 parts of the inorganic filler, 8 to 12 parts of the plasticizer, 1 to 3 parts of the lubricating agent and 0.5 to 1.5 parts of the antioxidant. The halogen-free flame retardant plastic material has the benefits that the plastic material does not contain any halogen flame retardant and is good in environment protection effect; meanwhile, by the adding of the inorganic filler, the halogen-free flame retardant plastic material is better in effect and good in flame retardant effect in the use process, and can meet the Industrial Requirement.

Gao Zhibing - One of the best experts on this subject based on the ideXlab platform.

  • halogen free flame retardant plastic material
    2015
    Co-Authors: Gao Zhibing
    Abstract:

    The invention discloses a halogen-free flame retardant plastic material. Polypropylene and polymethacrylate are used as raw materials, and inorganic filler, plasticizer, lubricant and antioxygen are further included. The halogen-free flame retardant plastic material comprises, by weight, 40-45 parts of the polypropylene, 20-35 parts of the polymethacrylate, 5-10 parts of the inorganic filler, 8-12 parts of the plasticizer, 1-3 parts of the lubricant and 0.5-1.5 parts of the antioxygen. The halogen-free flame retardant plastic material has the advantages that the plastic material does not contain halogen flame retardant, so that the environment-friendly effect is good; meanwhile, due to the added inorganic filler, the using effect is better, the flame retardant effect is good, and the Industrial Requirement can be met.

Jiuqiang Han - One of the best experts on this subject based on the ideXlab platform.

  • defect detection in textiles using optimal gabor wavelet filter
    2006
    Co-Authors: Hao Liu, Jiuqiang Han
    Abstract:

    For automatic visual inspection of Industrial production on textile materials, a method based on optimal Gabor wavelet filter was presented in this paper. This method used a simple and fast process to get the optimal filer from a set of Gabor wavelet filters and utilized this filter to extract texture features of images. Considering the Industrial Requirement, we used fast algorithm in feature extraction to reduce the calculation time. Finally, we used a threshold of this features to produce a binary image of defects. The experiments on this approach yielded excellent results for various types of defects. The results show that the developed algorithm is robust, scalable and computationally efficient for defect detection and appropriate for real-time industry production

Gabor Retvari - One of the best experts on this subject based on the ideXlab platform.

  • node virtualization for ip level resilience
    2018
    Co-Authors: Mate Nagy, Janos Tapolcai, Gabor Retvari
    Abstract:

    For Internet protocol (IP) to evolve into a true carrier-grade transport facility, it needs to support fast resilience out-of-the-box. IP-level failure protection based on the IP fast reroute/loop-free alternates (LFA) specification has become Industrial Requirement recently. The success of LFA lies in its inherent simplicity, but this comes at the expense of letting certain failure scenarios go unprotected. Realizing full failure coverage with LFA so far has only been possible through completely re-engineering the network around LFA-compliant design patterns. In this paper, we show that attaining high LFA coverage is possible without any alteration to the installed IP infrastructure, by introducing a carefully designed virtual overlay on top of the physical network that provides LFAs to otherwise unprotected routers. Our main contribution is formulating the corresponding resilient IP overlay design problem and providing constructions that can achieve full failure coverage against single link failures by adding at most four virtual nodes to each physical one. We also show that the problem of finding the minimal number of virtual nodes achieving full failure coverage is NP-hard, and thus propose heuristic algorithms that are guaranteed to terminate with a fully protected topology in polynomial time. According to the numerical evaluations the performance of our algorithm is on par with, or even better than, that of previous ones, lending itself as the first practically viable option to build highly resilient IP networks.

  • router virtualization for improving ip level resilience
    2013
    Co-Authors: Janos Tapolcai, Gabor Retvari
    Abstract:

    IP-level failure protection based on the IP Fast ReRoute/Loop-Free Alternates (LFA) specification has become Industrial Requirement recently. The success of LFA lies in its inherent simplicity, but this comes at the expense of letting certain failure scenarios go unprotected. Realizing full failure coverage with LFA so far has only been possible through completely reengineering the network around LFA-compliant design patterns. In this paper, we show that attaining high LFA coverage is possible without any alteration to the installed IP infrastructure, by introducing a carefully designed virtual overlay on top of the physical network that provides LFAs to otherwise unprotected routers. We study the problem of how to provision the overlay to maximize LFA coverage, we find that this problem is NPcomplete, and we give Integer Linear Programs to solve it. We also propose novel methods to work-around the limitations of current LFA implementations concerning Shared Risk Link Groups (SRLGs), which might be of independent interest. Our numerical evaluations suggest that router virtualization is an efficient tool for improving LFA-based resilience in real topologies.

Esmaeil Shojaee - One of the best experts on this subject based on the ideXlab platform.

  • defect detection in textiles using morphological analysis of optimal gabor wavelet filter response
    2009
    Co-Authors: Hamid Alimohamadi, Alireza Ahmadyfard, Esmaeil Shojaee
    Abstract:

    This paper addresses new defect detection method in textile based on Morphological Analysis and Gabor wavelet filters responses. Our method consist of there part. First a bank of Gabor wavelet filters is applied on the textile image for extracting feature matrix. It is based on the energy response from the convolution of Gabor wavelet filters in different frequency and orientation domains. Then based on the response of filters, the optimal filter is selected among the filter bank. Considering the Industrial Requirement for finding adaptive solutions that can be executed in real time and reduce false rate, we use morphological analysis as an adaptive threshold technique for detection. By applying morphological analysis on response of the optimal filter, the defects are detected. The experimental results on different type of textiles show that the developed algorithm is robust, scalable and effective for detection various kind of textile defects.