Hot deformation behavior of CNTs/Al-Li composite prepared by powder metallurgy

Jia Lei,Liu Yang,Xing Zhiguo,He Gengchao,Lu Zhenlin,Zhou Yongxin 한국탄소학회 2022 Carbon Letters Vol.32 No.5

CNTs/Al-Li composite was first prepared by hot-pressed sintering from Al-Li alloy powder and CNTs solution, and then the hot compression tests were performed on MMS-100 thermal simulator at strain rate range of 0.01– 10 s−1, deformation temperature range of 350–500 °C, and total deformation amount of 60%. True stress–strain curves were plotted, and constitutive equation as well as hot processing maps were successfully confirmed based on Arrhenius constitutive model and Prasad instability criterion. Results show that CNTs/Al-Li composite have a very poor hot deformation ability and narrow processing region, which is strain rate range of 0.1–1 s−1 and deformation temperature range of 360–400 °C. Hot extrusion experiment was carried out and the processing parameters were selected according to the established hot processing map, and an improvement on strength and a good balance between strength and plasticity can be obtained, which is about 650 MPa for tensile strength and 9% for elongation.

The Effect of Perceived Service Quality on Brand Loyalty in Hotels: The Causal Role of Relationship Quality and the Mediating Effect of Employee Trust

Jialei Xu(Jialei Xu),Chul-Jae Choi(Chul-Jae Choi),Dae-Gyu Min(Dae-Gyu Min) The International Academy of Global Business and T 2023 The International Academy of Global Business and T Vol.19 No.3

Purpose - As the spread of COVID-19 has weakened recently, countries have switched to ‘with Corona’ policies. The hotel service industry, which has been hit hard in sales, is also making every effort to overcome difficulties through various brand strategies to provide high-quality services to customers and strengthen relationship quality through the trust of service employees at service points. Therefore, this study aims to verify the mediating role of employee trust in the relationship between perceived service quality and brand satisfaction and brand trust, and the causal effect of brand commitment by verifying whether brand satisfaction and brand trust affect brand loyalty or through brand commitment. Design/Methodology/Approach - Data were collected from consumers with experience using upscale hotels in Korea, and the research hypotheses were verified by structural equation model analysis using the SPSS 21.0 and Amos 21.0 statistical packages. Findings - First, the mediating effect of employee trust was confirmed in the relationship between perceived service quality, brand satisfaction, and brand trust. Second, brand satisfaction influenced brand trust and brand commitment, and brand trust influenced brand commitment. Third, brand satisfaction did not directly affect brand loyalty, but it did affect brand trust and brand commitment, and these constructs affected brand loyalty. Research Implications - In conclusion, it is necessary to manage service training for employees, as interactions with customers at the service point can provide the correct service and strengthen brand loyalty by identifying each component of brand relationship quality and checking the influence in the channel relationship.

The Relationship between Emotional Attachment and Customer Loyalty : The mediating effect of Affective Commitment

JIALEI XU,ChulJae Choi 한국마케팅관리학회 2021 한국마케팅관리학회 학술대회 Vol.2021 No.05

The association between dietary patterns, incident chronic kidney disease and kidney function decline among middle-aged Korean: The cohort study

Jialei Fu,Khongorzul Ganbat,Noviana Astuti Irna Sakir,Sangah Shin 한국식품영양과학회 2022 한국식품영양과학회 학술대회발표집 Vol.2022 No.10

A Design of K-XMDR Search System Using Topic Maps

Jialei, Zhang,Hwang, Chi-Gon,Jung, Gye-Dong,Choi, Young-Keun The Korea Institute of Information and Commucation 2011 Journal of information and communication convergen Vol.9 No.3

This paper proposes a search system using the topic maps that it extends XMDR into Knowledge based XMDR for solving of the problems of the heterogeneity of distributed data on a network and integrate data by an efficient way. The proposed system combined Topic Maps and the extended metadata registry effectively. The Topic Maps represent related knowledge and reasoning relationship by associations of topic. And the extended metadata registry standards and manages the metadata of the local systems through registration and certification on the distributed environment. We also proposed a meta layer, include the meta topic and meta association to achieve semantic classification grouping of topics and to define relationship between Topic Maps and extended metadata registry.

Efficient Order-based Scheduling Algorithms for Automated Retrieval System (ARS) in Smart Warehouses

Jialei Liu,Soung-Yue Liew,Boon Yaik Ooi,Donghong Qin 제어로봇시스템학회 2020 제어로봇시스템학회 국제학술대회 논문집 Vol.2020 No.10

A Smart Warehouse (SW) usually employs an automated warehouse management system that integrates artificial intelligence and robotics to automate the warehouse processes. For instance, an Automated Retrieval System (ARS) is used in SW to retrieve products ordered by customers from shelves in order to speed up the product movement. Such a process is important because the product retrieval speed directly affects the subsequent processes, such as packaging and delivery, thus bringing a significant impact on the entire transaction duration between merchants and customers. In general, an order from a customer may contain several items and these items need to be retrieved from the respective shelves of the warehouse before the packaging process can be started. The retrieval delay of an order can then be defined as the duration from the time when the order being input to the system until the time when the last item of the order is retrieved. To reduce the retrieval delay of orders, we combine the integrality of order with the job scheduling of ARS. We introduce the concept of Order Tag and propose two Order-Based scheduling algorithms according to the greedy strategy to reduce the total retrieval delay of orders. Mathematical models are constructed to classify and evaluate the retrieval problems. Both algorithms take polynomial time and the ideal state is that all the retrieval jobs are evenly distributed to stackers. Simulation results demonstrate that these two strategies can reduce the total retrieval delay by approximately 30% comparing to the existing algorithms.

Neo-Chinese Style Furniture Design Based on Semantic Analysis and Connection

Jialei Ye,Jiahao Zhang,Liqian Gao,Yang Zhou,Zi Yang Liu,Jianguo Han 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.8

Lately, neo-Chinese style furniture has been frequently noticed by product design professionals for the big part it played in promoting traditional Chinese culture. This article is an attempt to use big data semantic analysis method to provide effective design research method for neo-Chinese furniture design. By using big data mining program TEXTOM for big data collection and analysis, the data obtained from typical websites in a set time period will be sorted and analyzed. On the basis of "neo-Chinese furniture" samples, key data will be compared, classification analysis of overall data, and horizontal analysis of typical data will be performed by the methods of word frequency analysis, connection centrality analysis, and TF-IDF analysis. And we tried to summarize according to the related views and theories of the design. The research results show that the results of data analysis are close to the relevant definitions of design. The core high-frequency vocabulary obtained under data analysis, such as popular, furniture, modern, etc., can provide a reasonable and effective focus of attention for the designs. The result obtained through the systematic sorting and summary of the data can be a reliable guidance in the direction of our design. This research attempted to introduce related big data mining semantic analysis methods into the product design industry, to supply scientific and objective data and channels for studies on design, and to provide a case on the practical application of big data analysis in the industry.

The association of dietary patterns with incident chronic kidney disease and kidney function decline among middle-aged Korean adults: a cohort study

Jialei Fu,Sangah Shin 한국역학회 2023 Epidemiology and Health Vol.45 No.-

OBJECTIVES: This study assessed the association of dietary patterns with the incidence of chronic kidney disease (CKD) and kidney function decline among Korean adults. METHODS: Data were collected from the records of 20,147 men and 39,857 women who participated in the Health Examinees study. Principal component analysis was used to identify 3 dietary patterns (prudent, flour-based food and meat, and white rice-based), and CKD risk was defined using the Epidemiology Collaboration equation for estimated glomerular filtration rate: (eGFR) <60 mL/min/1.73 m2. A kidney function decline was defined as a >25% decrease in eGFR from baseline. RESULTS: During the 4.2-year follow-up, 978 participants developed CKD and 971 had a 25% decline in kidney function. After adjusting for potential impact variables, compared with the lowest quartile of the prudent dietary pattern, participants in the highest quartile had a 37% lower risk of kidney function decline among men (hazard ratio [HR], 0.63; 95% confidence interval [CI], 0.47 to 0.85); while higher adherence to the flour-based food and meat dietary pattern was associated with an increased risk of CKD in both men (HR, 1.63; 95% CI, 1.22 to 2.19) and women (HR, 1.47; 95% CI, 1.05 to 2.05) as well as a decline in kidney function in both men (HR, 1.49; 95% CI, 1.07 to 2.07) and women (HR, 1.77; 95% CI, 1.33 to 2.35). CONCLUSIONS: Although a higher adherence to the prudent dietary pattern was inversely associated with the risk of kidney function decline in men, there was no association with CKD risk. In addition, a higher adherence to the flour-based food and meat dietary pattern increased the risk of CKD and kidney function decline. Further clinical trials are needed to confirm these associations.

Simple Preparation of Copolymer of Styrene and 4-Chloromethyl Styrene and Its Application in NLO Materials

Jialei Liu,Xinhou Liu,Zhen Zhen 대한금속·재료학회 2012 ELECTRONIC MATERIALS LETTERS Vol.8 No.4

This article reports a synthesis a new class of nonlinear optical (NLO) polymer, containing 3-methyl-4-cyano-5-dicyanomethylidene-2-oxo-3-pyrroline (TCP) acceptor. TCP chromophore was synthesized and characterized by Uv-Vis absorption, 1H NMR, and mass-spectrometry. The titled polymer shows high thermal stability and large optical nonlinearity. A high glass transition temperature of 125°C was determined by DSC measurement,and measured electrooptical (EO) at wavelength 1.31 mm was equal to 37.4 pm/V. The order parameter of these films evaluated by absorption was equal to about 24%.

An Analysis of the Equity of Students' Investment Base on Korea Local Education Finance

Jiang Jialei,Eun-Mi, Park ASCONS 2021 INTERNATIONAL JOURNAL OF EMERGING MULTIDISCIPLINAR Vol.5 No.1

Background/Objectives: This study analyzes the equity of the per capita investment scale of students in Korea. Methods/Statistical analysis: This study compares and analyzes the equity of the per capita investment of students, the per capita labor cost investment of students and the per capita facility investment of students. In addition, this paper analyzes the changes of students' per capita investment in each year (2011-2014), and evaluates the fairness of students' per capita labor cost and facility cost investment. Findings: The results of this study are as follows. First, on the whole, the per capita investment of students in the city, the road and the land department is relatively fair. The per capita investment of students in different regions of the Municipal Department of education was unequal from 2012 to 2014. Second, according to different regions, the fairness of investment in labor cost and facility cost per student is different. It can be seen that the investment amount of labor cost per student is fair among city, road and land departments. From 2011 to 2014, the labor cost per capita of Gini city showed a rising trend. Third, according to the different districts of the city and the road Education Department, there are differences in the investment amount of labor cost per student and the investment amount of facility cost per student. From 2011 to 2013, Busan city has the largest per capita investment, and Seoul special city has the lowest. Improvements/Applications: After the diagnosis of the fairness of the current investment amount of students among regions, the reasonable improvement plan of education finance is provided to the relatively low areas, and the direction of the distribution and development of student education finance in the future is put forward.