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      • KCI등재

        한국어 `가볍다`와 중국어 `경(輕)`의 의미 확장 양상에 대한 대조 연구

        이천택 ( Li Tianze ),백방 ( Bai Fang ) 민족어문학회 2017 어문논집 Vol.- No.80

        본고는 대조언어학의 입장에서 한국어와 중국어의 형용사 `가볍다`와 `輕`을 대상으로 원형의미와 확장의미를 설정하고 각 의미의 배열순서, 확장 양상 즉, 의미파생 관계를 밝히는 데에 목적을 둔다. `가볍다`와 `輕`에 관한 선행 연구는 많지 않고 대조 연구의 내용은 사전에 제시된 의미의 유무 여부를 밝히는 데에 그치는 경우가 대다수였다. 그런데 실제 `가볍다`와 `輕`은 여러 단의로 구성된 다의어로서 다의 분석하는 측면에서 원형의미와 확장의미의 설정에서 출발하여 각 단의 사이의 내재적 관계, 순서 배열, 그리고 확장 경로를 밝히는 작업이 더 의의가 있을 것으로 생각된다. 그러나 기존연구에서는 이에 대해 논의된 바가 없는 것으로 보인다. 본고에서는 원형의미의 설정, 확장 순서 및 경로 등 문제에 주목하고 구체적으로 대조해 보고자 하였다. 이러한 대조 분석을 통해 언어학습자가 `가볍다`와 `輕`의 의미를 파악하는 데에 도움이 되기를 기대한다. The purpose of this paper is to establish the circular meaning and the extended meaning of the words `kabyeopda` and `qing` of the weight adjectives in Korean and Chinese, and to clarify the derivative relation of each meaning. The previous studies on the adjective of weight are very few, mainly focusing on the presence of the phenomenon in terms of the dictionary meaning and presenting the similarities and differences. However, the polysemy of weight adjective has not examined what the circular meaning is, what the relation between each meaning is, and didn`t talk about the expand method and the expand way from circular meaning to extension meaning. In this paper, we propose the criteria of semantic analysis to clarify and contrast the meaning of Korean `kabyeopda` and Chinese `qing`. I hope that this contrast and analysis will help language learners in both countries to understand the meaning of weight adjectives.

      • KCI등재

        Incentive Mechanism in Participatory Sensing for Ambient Assisted Living

        ( Hu Yao ),( Wu Muqing ),( Li Tianze ) 한국인터넷정보학회 2018 KSII Transactions on Internet and Information Syst Vol.12 No.1

        Participatory sensing is becoming popular and has shown its great potential in data acquisition for ambient assisted living. In this paper, we propose an incentive mechanism in participatory sensing for ambient assisted living, which benefits both the platform and the mobile devices that participated in the sensing task. Firstly, we analyze the profit of participant and platform, and a Stackelberg game model is formulated. The model takes privacy, reputation, power state and quality of data into consideration, and aims at maximizing the profit for both participant and publisher. The discussion of properties of the game show that there exists an unique Stackelberg equilibrium. Secondly, two algorithms are given: one describes how to reach the Stackelberg equilibrium and the other presents the procedures of employing the incentive strategy. Finally, we conduct simulations to evaluate the properties and effectiveness of the proposed mechanism. Simulation results show that the proposed incentive mechanism works well, and the participants and the publisher will be benefitted from it. With the mechanism, the total amount of sensory data can be maximized and the quality of the data can be guaranteed effectively.

      • The Swing Angle of Insulators Measurement Based on Binocular Vision and Improved Region Segmentation

        Rongbao Chen,Yang Li,Tianze Fei 보안공학연구지원센터 2016 International Journal of u- and e- Service, Scienc Vol.9 No.11

        This paper first analyzed the structure and the edge symmetry of insulator and divided the insulator into 8 kinds of edge according to these characteristics. Then it improved the algorithms that segment and label the region of interest (ROI) based on the depressed region of insulator, which makes labeling multi-insulators in a single image solved. To accurately extract the edge of insulator from the ROI, this paper proposed the double thresholds edge detecting method on account of parallax principle in binocular vision, avoiding of the deficiency of under-filtering and over-filtering within the single threshold method based on monocular vision. It analyzed and removed local and global irrelevant pixels using statistical methods, thereby stereoscopically matched the pixels in each ROI and calculated their 3D coordinates. Then 2 vectors are constructed based on the maximum and minimum of the Z coordinate component: the vertical vector and the direction vector of the insulator. Finally, every swing angle can be calculated using the inner product method. Experiment results show that the relative error of this method is less than 1.3%, it not only has higher accuracy than the traditional method, but also avoids the low efficiency of a single swing angle measurement of traditional method.

      • KCI등재

        Study on the Pressure-Volume-Temperature Properties of Polypropylene at Various Cooling and Shear Rates

        Pengcheng Xie,Huaguang Yang,Tianze Cai,Zheng Li,Yuelin Li,Weimin Yang 한국고분자학회 2018 폴리머 Vol.42 No.2

        To understand the pressure-volume-temperature (PVT) properties of polymer in injection process, a dilatometer with high cooling rate (up to 25 oC/s) and shear rate (up to 320 s-1) was developed. The working pressure and temperature of the dilatometer range from 0 to 100 MPa, and from 30 to 300 oC, respectively. With this instrument, a crystalline polymer polypropylene (PP) was employed to study the effects of cooling rate, shear rate, pressure and their coupling effect on its PVT properties. It was demonstrated that the cooling rate showed a significant effect on the PVT properties. With the increase of cooling rate, the transition temperature of PP from melt state to crystallization decreases gradually and the temperature range of crystallization was also extended. Shear increased the transition temperature of PP from melt state to crystallization. Meanwhile, the initial temperature of shear and crystalline segment was shifted to a higher temperature region with increasing shear duration or shear rate. Above the transition temperature, the effect of shear on the PVT properties weakened gradually with increasing the initial temperature. The coupling analysis of cooling and shear processes showed that increase in cooling rate was enhanced the effect of shear on the transition temperature of PP from melt state to crystallization.

      • KCI등재

        Effect of curing mechanism on sulfuric acid corrosion resistance of geopolymer recycled aggregate concrete

        Zhenmeng Chen,Hui Liu,Pinghua Zhu,Haichao Li,Tianze Ge,Lei Yang,Chunhong Chen,Yanlong Dong 대한토목학회 2024 KSCE Journal of Civil Engineering Vol.28 No.4

        To explore the effect of curing mechanism on the mechanical properties and sulfuric acid corrosion resistance of the geopolymer recycled aggregate concrete (GRAC), the specimens were cured at high temperature (60oC, 80oC) for 6 h, 24 h and 48 h respectively, and then lasted up to 7 d at room temperature. After the curing period was over, the laboratory accelerated simulation test of specimens was carried out by the periodic immersion method: the GRAC specimens (φ 50 × 100 mm) were immersed in the sulfuric acid solution with pH = 1 for 5 d and then dried at room temperature for 24 h, with a total circulation of 90 d. The results showed that after being eroded by sulfuric acid solution, the GRAC specimens cured at 60oC for 48 h had higher compressive strength with 19.9 MPa, lower mass loss rate (only 0.23%) and neutralization depth (5.71 mm) than those under other curing time. The GRAC specimens cured 80oC for 24 h also had a good performance: compressive strength achieved 16.9 MPa and had lower neutralization depth (5.99 mm), which was less affected by sulfuric acid corrosion. However, the GRAC specimens cured at 60oC for 48 h had the better mechanical properties than that cured at 80oC for 24 h. Excessive high temperature curing (80oC) would lead to more voids and microcracks inside GRAC, and destroy the dense structure, thereby reducing mechanical property of concrete. These voids and pores provided more erosion channels for sulfuric acid solution, which accelerated the corrosion rate. From the point of view of energy saving and concrete performance, no more than 60°C of curing temperature is recommended for industrial use.

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