Jilin Institute of Chemical Technology

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Yang W.,Jilin Institute of Chemical Technology
Chemical Engineering Transactions | Year: 2016

In order to forecast the quality of precision press-fit assembly, the press-fit curve and maximum press-mounting force for microparts' assembly were researched with FEA (finite element analysis) and experimental method. The available method at present is random sampling method. The method is high-cost and destructive method for precision press-fit assembly. The geometric model of micropart was built in three dimensional and its FEA model then built based on it in ANSYS Workbench. The press-fit process was investigated in detail and experiment for validated. The results show that the difference between press-fit curves obtained from FEA and these obtained from experimental method is relatively small. In addition, the deviation between maximum press-mounting force obtained from FEA and these obtained from experimental method is 3.0%. According to the compared results, the press-fit curve and maximum press-mounting force can be utilized for predicting quality of press-fit assembly. Copyright © 2016, AIDIC Servizi S.r.l.


Zhang X.,Jilin Institute of Chemical Technology
C e Ca | Year: 2017

Based on the pressure distribution test system, this paper studies the characteristics of plantar pressure distribution during squatting and rising and jogging on different exercise surfaces in young people and during gait in obese children and normal children, and obtains relevant internal and external parameters of the body. According to the results, when a half squat is completed, the area of the hallux and the second toe bears the highest pressure, followed by the medial and lateral areas of forefoot, and the third - fifth toes and the arch area bear relatively low pressure. During the half-squat, the planta mainly relies on the hallux, forefoot and heel. During a deep squat, the medial area of the forefoot and medial and lateral sides of the heel bear much more pressure than other areas of the planta, and the third-fifth toe bone, arch area and lateral area of the forefoot bear relatively low pressure. The average plantar pressure during squatting-rising exercises is much higher than that during half squatting-rising exercises. The peak plantar pressure, total plantar contact area and each plantar contact area of obese children are greater than those of normal children. The average forefoot pressure of all children is greater than that of the rear foot pressure, and for most children, the right plantar pressure is greater than the left one. When athletes run on cement floors, grassland, plastic runways and treadmills, the plantar pressure and pressure integral do not show significant differences. Different exercise areas do not significantly change the impacts of the ground on the lower limbs of athletes during jogging. © 2017 Techna Group Srl & ESMC Co., Ltd.


Requiring a technical mastery of specialized vocabulary and concise and precise sentences, chemical English translation is difficult in English translation disciplines. The traditional use of a dictionary to look up words and then organize the grammar to complete the translation is insufficient either in translation efficiency or in translation quality. With the abundance of parallel corpora and the maturity of computer translation software technology in recent years, their combination in chemical English translation will contribute greatly to the improvement of chemical English translation levels. This paper first discusses the concept of parallel corpus theory and the development of computer translation software, and then conducts the self-designed empirical comparative research on the parallel corpus based computer-aided translation software teaching. With the chemical English as the translation teaching materials, we compare the translation levels of the experimental group and the control group, verifying its positive role played in chemical English translation. © 2017 Techna Group Srl & ESMC Co., Ltd.


Zhou Z.,Jilin Institute of Chemical Technology
Revista de la Facultad de Ingenieria | Year: 2017

Image mosaic has a series of partially overlapping images together to form a substantial. Wide viewing angle, the original image and distortion against each other in the same scene, with no apparent resolution image sutures. Quality of the image depends on the mosaic image registration accuracy. Currently, the feature point matching method based on image registration technique is a major model for affine transformation and perspective transformation model. It is not only applicable to the registration of a lower degree of coincidence between the images, but can also be applied registration motion image of the scene and the object image contained hide among. An important use of image stitching technique is used to construct a panoramic view, panoramic view of the technology refers to the observer as the center, a fixed point to the technology revolution represents a 360-degree field of view of the scene observed. It is a new image information organization mode, you can express the complete environmental information around. Currently a more popular applications panorama is virtual reality. © 2017 Universidad Central de Venezuela.


Wang H.,Jilin Institute of Chemical Technology
Advances in Intelligent Systems and Computing | Year: 2018

With the advent of the Internet era, computer technology has penetrated into the political, economic, cultural and other fields, which also includes the field of education. In the traditional education mode, large test is often faced with many difficult including high cost of examination, heavy examinations and so on. Therefore, it is an important research on designing a test system combine with Artificial Intelligence. This paper analyzes the related Artificial Intelligent standardized test system, and uses the improved Genetic Algorithm to refine the rules for an Intelligent test paper, and uses Fuzzy and Close matching to intelligent mark, combines with Artificial Intelligence to design optimized standardized English test systems. And does feasibility analysis and related comparisons by the experiment. The results showed that the Intelligent standardized test system not only ensured the fairness of the examination, reduced the costs of the examination, but also assessed the capacity of the candidates more effectively. © 2018, Springer International Publishing AG.


Zhang L.,Jilin Institute of Chemical Technology
Revista de la Facultad de Ingenieria | Year: 2017

The research of this paper combines qualitative with quantitative in practical. Among them, the qualitative research mainly reflected in the existing domestic and foreign literature on the induction and summary. It mainly based on the supply chain finance-related theoretical knowledge of learning, which focused on the supply chain credit risk of SMEs in understanding. Based on the existing research, it extracted the credit evaluation of SMEs in this paper the index system. Quantitative research is mainly based on the use of logistic regression and BP neural network analysis, combined with the database of small and medium-sized listed companies in the relevant data to establish the evaluation model. The supply chain finance SME credit risk comprehensive evaluation and comparative analysis. From the perspective of supply chain, this paper analyzes the causes and influencing factors of SME credit risk in the supply financial model, and constructs a credit risk evaluation system for SME which is suitable for supply chain financial business. Therefore, from the theoretical level, it is deepening and supplementing the research on the influence factors of SME credit risk from the perspective of supply chain finance. From a practical perspective, the new assessment method will help commercial banks to prevent and manage the credit risk of SMEs in the new mode. © 2017 Universidad Central de Venezuela.


Liang H.,Jilin Institute of Chemical Technology
International Journal of Emerging Technologies in Learning | Year: 2017

As a kind of stylized language expression, formulaic sequences are widely used in different spoken language contexts, but the study of English formulaic sequences has always been a difficulty in college students' oral English learning in China. This paper adopts the computer corpus approach and utilizes its massive storage of formulaic sequences and high-speed data retrieval capabilities to help learners with English formulaic sequence learning. On one hand, learners are able to truly and objectively understand the use of formulaic sequences in English-speaking environment through the computer corpus; on the other hand, learners can improve their memories and increase their formulaic sequence learning efficiency with the help of the structured and regularized and massive amount of use cases of formulaic sequences retrieved by the computer corpus. Finally, in the empirical study, through the comparative analysis of the test group and the control group, this paper proves that the computercorpus- based formulaic sequences have great significance to oral English teaching.


Qin L.,Jilin Institute of Chemical Technology
International Journal of Emerging Technologies in Learning | Year: 2017

This paper describes the design principles and realization process of project-based computer English learning system. The subjective initiative of project-based learning is applied to English learning as a starting point, allowing full play to learner's analytical, problem-solving and self-exploration ability. Combined with the computer database SQL Server and other related procedures, we established an English project-based learning system, investigated its user satisfaction and collected relevant statistics. This system plays a promotive role in providing guidance for English learning and lifting the informatization level of English teaching.


Wang B.,Jilin Institute of Chemical Technology
International Journal of Emerging Technologies in Learning | Year: 2017

Through interviews and induction, this paper attempts to discuss the importance of college English teaching methods in the teaching process under the network context and point out issues like teachers' inadequate awareness and abilities of collecting network resources and information and insufficient background monitoring on students' study activities. Based on this, this paper proposes that college English teachers should free their minds, change their views and improve their network operation skills to know more about students' study activities and update their knowledge bases to improve their own quality so as to redefine their roles under the network context.


Jin F.-L.,Jilin Institute of Chemical Technology | Park S.-J.,Inha University
Polymer Degradation and Stability | Year: 2012

Epoxy resin/filler hybrid composites were prepared by the melt blending of diglycidylether of bisphenol- A (DGEBA), as the epoxy resin, with nano-Al 2O3 or nano-SiC particles, as the nanoscaled fillers. The thermal properties, such as the curing behavior, thermal stability, dynamic mechanical properties, and thermal mechanical properties of the DGEBA/nano-Al2O3 and DGEBA/nano-SiC composites were examined using a range of techniques. As a result, the DSC curve peak temperature of both composites decreased with increasing filler content. The integral procedure decomposition temperature increased from 630 °C to 853 °C for DGEBA/nano-Al2O3 composite and 858 °C for DGEBA/nano-SiC composite. The char yield at 800 °C increased from 14.3% to 26.2-26.6% for both composites. Both composites had a 10 °C higher glass transition temperature than the neat epoxy resin. The coefficient of thermal expansion of both composites at the glassy and rubbery regions decreased with increasing filler content. © 2012 Elsevier Ltd. All rights reserved.

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