A Cloud Service Model Based on Indirect Addressing

Guorong Chen,Tianyan Mao,Juli Deng,Xue Wu,Chengrun Ji 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.5

The cloud service is a new type service way to provide the users in distributed environment, but the service model, service package and the knowledge searching methods trouble it popularizing. Aiming at the problems, a cloud service model based on indirect addressing is proposed in the paper. It analyzed the new problems serving in cloud firstly, then comes out a recourse and service invoking model based on indirect addressing, gave out the service actors of the model in detail, studied the package method of the cloud interfaces, produce the knowledge step in the indirect addressing mode of resources distribution. Proposed a knowledge discovery strategy based on Chord ring to resolve the knowledge retrieval problem and introduced the Chord ring in detail. The case studies proved the method with some advantages, and it proposes a new way to resolve the service problem in cloud.

Robust multi-atlas label propagation by deep sparse representation

Zu, Chen,Wang, Zhengxia,Zhang, Daoqiang,Liang, Peipeng,Shi, Yonghong,Shen, Dinggang,Wu, Guorong Elsevier 2017 Pattern recognition Vol.63 No.-

<P><B>Abstract</B></P> <P>Recently, multi-atlas patch-based label fusion has achieved many successes in medical imaging area. The basic assumption in the current state-of-the-art approaches is that the image patch at the target image point can be represented by a patch dictionary consisting of atlas patches from registered atlas images. Therefore, the label at the target image point can be determined by fusing labels of atlas image patches with similar anatomical structures. However, such assumption on image patch representation does not always hold in label fusion since (1) the image content within the patch may be corrupted due to noise and artifact; and (2) the distribution of morphometric patterns among atlas patches might be unbalanced such that the majority patterns can dominate label fusion result over other minority patterns. The violation of the above basic assumptions could significantly undermine the label fusion accuracy. To overcome these issues, we first consider forming label-specific group for the atlas patches with the same label. Then, we alter the conventional <I>flat and shallow</I> dictionary to a deep multi-layer structure, where the top layer (<I>label-specific dictionaries</I>) consists of groups of representative atlas patches and the subsequent layers (<I>residual dictionaries</I>) hierarchically encode the patchwise residual information in different scales. Thus, the label fusion follows the representation consensus across representative dictionaries. However, the representation of target patch in each group is iteratively optimized by using the representative atlas patches in each label-specific dictionary exclusively to match the principal patterns and also using all residual patterns across groups collaboratively to overcome the issue that some groups might be absent of certain variation patterns presented in the target image patch. Promising segmentation results have been achieved in labeling hippocampus on ADNI dataset, as well as basal ganglia and brainstem structures, compared to other counterpart label fusion methods.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Develop a novel multi-atlas patch based label fusion method; </LI> <LI> Alter the conventional flat and shallow dictionary to a deep multi-layer structure; </LI> <LI> Obtain more accurate label fusion results than conventional state-of-the-art methods. </LI> </UL> </P>

Characterization of a Thermostable Lichenase from Bacillus subtilis B110 and Its Effects on β-Glucan Hydrolysis

( Zhen Huang ),( Guorong Ni ),( Fei Wang ),( Xiaoyan Zhao ),( Yunda Chen ),( Lixia Zhang ),( Mingren Qu ) 한국미생물생명공학회 2022 Journal of microbiology and biotechnology Vol.32 No.4

Lichenase is an enzyme mainly implicated in the degradation of polysaccharides in the cell walls of grains. Emerging evidence shows that a highly efficient expression of a thermostable recombinant lichenase holds considerable promise for application in the beer-brewing and animal feed industries. Herein, we cloned a lichenase gene (CelA203) from Bacillus subtilis B110 and expressed it in E. coli. This gene contains an ORF of 729 bp, encoding a protein with 242 amino acids and a calculated molecular mass of 27.3 kDa. According to the zymogram results, purified CelA203 existed in two forms, a monomer, and a tetramer, but only the tetramer had potent enzymatic activity. CelA203 remained stable over a broad pH and temperature range and retained 40% activity at 70℃ for 1 h. The K_m and V_max of CelA203 towards barley β-glucan and lichenan were 3.98 mg/ml, 1017.17 U/mg, and 2.78 mg/ml, 198.24 U/mg, respectively. Furthermore, trisaccharide and tetrasaccharide were the main products obtained from CelA203-mediated hydrolysis of deactivated oat bran. These findings demonstrate a promising role for CelA203 in the production of oligosaccharides in animal feed and brewing industries.

Thermal field of large-diameter concrete filled steel tubular members under solar radiation

Daigeng Yang,Guorong Chen,Xiaofei Ding,Juncai Xu 사단법인 한국계산역학회 2020 Computers and Concrete, An International Journal Vol.26 No.4

Concrete-filled steel tubular (CFST) members have been widely used in engineering, and their tube diameters have become larger and larger. But there is no research on the thermal field of large-diameter CFST structure. These studies focused on the thermal field of the large-diameter CFST structure under solar radiation. The environmental factors and the actual placement position were considered, and the finite element model (FEM) of the thermal field of CFST members under solar radiation (SR) was established. Then the FEM was verified by practical experiments. The most unfavorable temperature gradient model in the cross-section was proposed. The testing results showed that the temperature field of the large-diameter CFST member section was non-linearly distributed due to the influence of SR. The temperature field results of CFST members with different pipe diameters indicated that the larger the core concrete diameter was, the slower the central temperature changed, and there was a significant temperature difference between the center and the boundary. Based on the numerical model, the most unfavorable temperature gradient model in the section was proposed. The model showed that the temperature difference around the center of the circle is small, and the boundary temperature difference is significant. The maximum temperature difference is 15.22°C, which appeared in the southern boundary area of the specimen. Therefore, it is necessary to consider the influence of SR on the thermal field of the member for large-diameter CFST members in actual engineering, which causes a large temperature gradient in the member.

Hierarchical and symmetric infant image registration by robust longitudinal-example-guided correspondence detection : Hierarchical and symmetric infant image registration

Wu, Yao,Wu, Guorong,Wang, Li,Munsell, Brent C.,Wang, Qian,Lin, Weili,Feng, Qianjin,Chen, Wufan,Shen, Dinggang Wiley (John WileySons) 2015 Medical physics Vol.42 No.7

<P>To investigate anatomical differences across individual subjects, or longitudinal changes in early brain development, it is important to perform accurate image registration. However, due to fast brain development and dynamic tissue appearance changes, it is very difficult to align infant brain images acquired from birth to 1-yr-old.</P>

Lifetime comparison of IGBT modules in Grid-connected Multilevel PV inverters Considering Mission Profile

Ranjith kumar Gatla,Wei Chen,Guorong Zhu,Jing V Wang,Sainadh Singh Kshatri 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5

The power semiconductor switches are the most unreliable devices in the Photovoltaic (PV) energy conversion system. Thermal stress is the prime cause behind the power semiconductor switch failure mechanism, the selection of switching strategy and converter topology can have a notable effect on the converter reliability. This paper presents a lifetime comparison of Insulated-Gate Bipolar Transistor (IGBT) modules in three classical multilevel inverter topologies on the basis of power cycling, thermal cycling, and lifetime performance. The electro-thermal analysis has been implemented to identify the amplitude of the temperature swings and mean junction temperature. The Bayer lifetime model is used to evaluate the consumed lifetime of IGBT modules in the multilevel inverters based on the calculation method of numerical junction temperature. The accuracy in lifetime estimation has improved by considering the mission profile. The study shows that the IGBT modules in cascaded H-bridge multilevel inverter have a higher lifetime when compared to the other two classical multilevel inverters

Effects of ultrasonic treatment on the gel properties of microbial transglutaminase crosslinked soy, whey and soy–whey proteins

Qiang Cui,Xibo Wang,Guorong Wang,Rui Li,Xiaodan Wang,Shuang Chen,Jingnan Liu,Lianzhou Jiang 한국식품과학회 2019 Food Science and Biotechnology Vol.28 No.5

This paper studied the influences of diverse ultrasonic power treatments on the physico-chemical properties of soy–whey mixed protein induced by microbial transglutaminase. Two groups of 15% (m/v) of protein solution-sole protein (as control group) and mixed protein were prepared and processed under different ultrasonic powers for 30 min. After ultrasonic power treatments, gel properties were significantly increased: under 300 W, the gel hardness of mixed protein reached a maximum of 998.9 g, with its water binding capacity scoring a maximum of 87%. According to the analysis of fluorescence emission spectrum, the fluorescence intensity and maximum absorption peak had changed, for different ultrasonic power treatments had exposed more groups. The Fourier Transform Infrared Spectroscopy also suggested that ultrasonic power treatments could change the secondary structure of gel samples. The scanning electron microscope demonstrated that the network structure of mixed protein gel displayed more regular and uniform after ultrasonic treatments.

Recovery of [BMIM]FeCl4 from homogeneous mixture using a simple chemical method

Chongjun Zhao,Meng Wang,Bing Li,Xiuzhen Qian,Yunlong Xu,Guorong Chen 한국화학공학회 2010 Korean Journal of Chemical Engineering Vol.27 No.4

[BMIM]FeCl4 (1-butyl-3-methylimidazolium tetrachloroferrate) was successfully separated from a homogeneous mixture of [BMIM]FeCl4 and H2O via a simple two-step method of phase-division by adding inorganic salt plus chemical extraction, or alternatively, ultracentrifugation, or ultrastrong magnetic field. NaCl showed excellent and effective phase-dividing performance combined with chemical extraction method from the homogeneous mixture of [BMIM]FeCl4 and H2O lower to 1 v%.

A kind of core cross-linked ‘‘semi-amphiphilic” polymer assemblies for controlled release of corrosion inhibitors and autonomous corrosion alarm

Ying Cao,Aoqi Zhu,Jianmin He,Jianhua Wu,Mingjin Xue,Yiting Xu,Birong Zeng,Guorong Chen,Lizong Dai 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-

A novel kind of core cross-linked assemblies formed from a ‘‘semi-amphiphilic” block copolymer, poly(syringaldehyde methacrylate)-block-poly (dopamine methacrylate-co-methyl methacrylate-costyrene)(PSMA-b-P(DMA-co-MMA-co-St)), was designed and served as the carrier for anti-corrosiveand corrosion detective molecules. Different from the core cross-linked micelles formed by the amphiphilicpolymers in water, the core cross-linked assemblies in this research were formed from the ‘‘semiamphiphilic”block copolymer, which took advantage of the different compatibility between epoxy andthe blocks in the polymer, leading to the self-assembly behavior happening in the organic resin, whilethey shared the advantages of traditional core cross-linked micelles with the properties of being stable,stimuli-responsive and multifunctional. The pH-responsive properties of the assemblies and their complexationwith Fe3+ caused by the corrosion of the steel were confirmed by UV spectrophotometry andXPS analysis of the corrosive products. The controlled release of corrosion inhibitors was fully reflectedby the expansion of the capacitor ring and the increase of the coating resistance (Rc) with the extensionof the immersion time, which was got via fitting the electrochemical impedance spectroscopy (EIS) datawith the equivalent electric circuits. Ultimately, the anti-corrosive mechanism of smart coating with thefunctional core cross-linked assemblies were also illustrated.