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Shao C.,Chongqing Vocational Institute of Engineering
Hecheng Shuzhi Ji Suliao/China Synthetic Resin and Plastics | Year: 2017

Epoxy-modified waterborne polyurethane(WPU)emulsion for architectural coatings was prepared with isophorone diisocyanat, polypropylene glycol, dimethylol propionic acid, 1, 4-butanediol, ethylenediamine and epoxy resin E-54 as raw materials. Effects of the content and charging order of E-54 on the emulsion appearance, water-resistance and mechanical properties of the WPU paint film were studied. The experimental results show that WPU emulsion with high solid content and stability is prepared via charging order of modification and neutralization in sequence; the optimal appearance and stability of the emulsion are obtained when the mass fraction of epoxy resin is 6% as well as the hardness, water resistance and tensile property of the paint film which can be used as architectural coatings with excellent performance. © 2017, Beijing Yanshan Branch, Assets Management Corporation, SINOPEC. All right reserved.

Ma W.,Chongqing Vocational Institute of Engineering
Revista de la Facultad de Ingenieria | Year: 2016

Study on physical and engineering properties of Lake mud for soft soil, determinated by the triaxial compression test, direct shear and consolidation test. Test determinated the parameters of consolidation characteristics of consolidation and shear strength characteristics when consolidation was stable, under compression of 25kPa, 50kPa, 100kPa, 200kPa, 300kPa and 400kPa; and analyzed the statistical correlation between the parameters, and analyzed the varying pattern of consolidation Cv and shear strength variation c with the degree of consolidation U. Then improved the coefficient of Terzaghi-Rendulic consolidation theory for the assumption of constant, established (U-t) curve with coefficient of consolidation Cv change with U. Test results provided data for the feasibility study Lake dike of ChengMenshan copper mine project.

Jiang Z.,Chongqing Vocational Institute of Engineering | Zhu J.,Chongqing City Management College
Asian Journal of Chemistry | Year: 2014

Cationic polyacrylamide (CPAM) were used extensively in water treatment, enhanced oil recovery and sludge dewatering. The review summarized the synthesis methods research progress of cationic flocculants. Four groups of synthesis technologies of cationic copolymers were reviewed, including aqueous solution polymerization, dispersion polymerization, inverse emulsion polymerization and photo initiated polymerization. Furthermore, the paper reviewed that the application of cationic flocculants in sludge dewatering treatment. Based on these reviews, the future research perspectives of synthesis and application on cationic flocculants in sludge dewatering treatment were proposed.

Li C.,Chongqing Vocational Institute of Engineering
Chemical Engineering Transactions | Year: 2016

The high-dimensional data has a number of uncertain factors, such as sparse features, repeated features and computational complexity. The random forest algorithm is a ensemble classifier method, and composed of numerous weak classifiers. It can overcome a number of practical problems, such as the small sample size, over-learning, nonlinearity, the curse of dimensionality and local minima, and it has a good application prospect in the field of high-dimensional data classification. In order to improve the classification accuracy and computational efficiency, a neval classification method based on the Hadoop cloud computing platform is proposed. Firstly, the processing of Bagging algorithm is done with the data sets to get the different data subsets. Secondly, the Random Forest is completed by training of the decision tree under the MapReuce architecture. Finally, the processing of data sets classification is done by the Random Forest. In our experiment, the three high-dimensional data sets are used as the subjects. The experimental results show that the classification accuracy of proposed method is higher than that of stand-alone Random Forest, and the computational efficiency is improved significantly. Copyright © 2016, AIDIC Servizi S.r.l.

Huang Z.,Chongqing Vocational Institute of Engineering
Proceedings - 2015 International Conference on Intelligent Transportation, Big Data and Smart City, ICITBS 2015 | Year: 2015

By establishing judgment matrix study dynamic regulation of sustainable production safety license under construction, consideration of the standard model of quality management, safety production license conditions, the enterprise itself and related industries to assist the regulatory implementation of the composition and the like, to give enterprises, production safety supervisor department, its relation to the three dynamic regulation, in coordination between enterprises and production safety authorities, based on game analysis, the relationship between the two scientific proof. © 2016 IEEE.

Huang Z.,Chongqing Vocational Institute of Engineering
Proceedings - 2015 International Conference on Intelligent Transportation, Big Data and Smart City, ICITBS 2015 | Year: 2015

In this paper, the necessities of the green building energy saving technology developed is analyzed in detail, and understand the impact of the green building energy saving technology developed for the future development of the country and the people. Then the construction of green building energy saving technology system is analyzed, and the problems in the process of building energy saving technology system of green building are analyzed, and the main construction direction of green building energy saving technology system is obtained. © 2016 IEEE.

Li C.,Chongqing Vocational Institute of Engineering
World Transactions on Engineering and Technology Education | Year: 2016

Maker education has been carried out, effectively, in China using Scratch programming tools. Through Maker education, students enhance their STEAM (science, technology, engineering, art and mathematics) knowledge and skills to meet the requirements of the 21st Century. Four types of Scratch tools suitable for students are introduced in this article. Maker-based STEAM education with Scratch tools is summarised from five aspects, viz. the basic idea, teaching objectives, teaching content, teaching strategies and teaching evaluation. This mode of teaching will open up a road to allow more students to participate in innovation and cultivate their STEAM abilities from an early age. © 2016 WIETE.

Xiaorong Z.,Chongqing Vocational Institute of Engineering
ICCET 2010 - 2010 International Conference on Computer Engineering and Technology, Proceedings | Year: 2010

To solve the security issues of cross-domain authentication in SOA, the paper proposed a Cross-Domain Authentication Model in SOA based on Enterprise Service Bus. The CDAM-ESB took use of Enterprise Service Bus as a third-party certification center by Using WS-Federation to build indirect trust relations between service requesters and service providers, which meant that the services distributed in different security domains could use their own IP/STS to establish a trust relation with IP/STS of ESB according to WS-Trust by way of security tokens. At the end of the paper, the policy management, trust management and authentication of Certification Center in the ESB which was the core of CDAM-ESB were elaborated in detail to explain that CDAM-ESB could couple with SOA closely to reduce the complexity of cross-domain authentication. © 2010 IEEE.

Zhang J.,Chongqing Vocational Institute of Engineering
Future Communication, Information and Computer Science - Proceedings of the International Conference on Future Communication, Information and Computer Science, FCICS 2014 | Year: 2015

The performance of the car can be improved by engine the automobile slightly. To control knock intensity within a certain range, the monitoring of the automobile knock is important. Research has focused on the detection methods and the common repair strategies in the work. Based on the concept and characteristics of the automobile knock, some common repair strategies are proposed. These strategies are applied to the sensor, knock control equipment, the engine itself, etc., combined with the importance of knock detection and the knock signal selection. Based on the application to the traditional automobile knock, the effect of electronic equipments to the automobile knock is analyzed. © 2015 Taylor & Francis Group, London.

Zhao Y.,Chongqing Vocational Institute of Engineering
World Information on Earthquake Engineering | Year: 2016

Victims' refuge life environment after the New Zealand earthquake was analyzed, It is pointed out that the public buildings with indoor seismic refuges function of should be considered in urban planning and construction. Based on the New Zealand earthquake victims refuge life, the basic functional requirements for the indoor seismic refuge was proposed. © 2016, Science Press. All right reserved.

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