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      • KCI등재

        한,중 여성 소비자의 쇼핑성향에 따른 화장품 속성 비교

        유샤샤 ( Sha Sha Liu ),박숙현 ( Sook Hyun Park ) 한국의류산업학회 2015 한국의류산업학회지 Vol.17 No.1

        This paper compared the properties of cosmetics depending on the shopping tendency of female consumers in Korea and China. The data on Chinese women living in Korea and Korean women in their 20s was collected using an offline survey. The data on Chinese women living in China in their 20s was collected using an online survey. Three hundred twenty-seven questionnaires out of a total of 330 questionnaires were used for statistical analysis. The survey was conducted from January to February 2014. Eighteen questions on shopping tendency and eight questions on the properties of cosmetics were analyzed using a 5-point Likert scale. Data was analyzed by Descriptives, Factor Analysis, Reliability Analysis, ANOVA and Cluster Analysis, and SPSS 21 statistical program. In accordance with the analyses, the shopping tendency comprised a showing-off tendency, pleasure-seeking tendency, and practicality tendency; the properties of cosmetics were classified into conformity and functionality. On the basis of the elements in the shopping tendency, the female consumers were categorized into a low involvement consumer group, high involvement consumer group, and hedonic consumer group. The Chinese women emphasized conformity or functionality of cosmetics more than the Korean women regardless of the countries where they lived. Regardless of shopping types or countries where they lived, the Korean and Chinese women in their 20s emphasized functionality over conformity of cosmetics. Furthermore, Chinese women living in Korea showed a similar shopping tendency to Chinese living in China.

      • KCI등재

        Frequency in Sound Change: Data from Mandarin

        Sha Liu 서울대학교 인지과학연구소 2022 Journal of Cognitive Science Vol.23 No.4

        The relationship between frequency and sound change has been a source for debate in the literature. This study focuses on two kinds of opposing sound changes, strengthening and weakening sound changes, so as to better understand the role of frequency in sound change. Strengthening and weakening sound changes are respectively exemplified by diphthongization and palatalization in Mandarin here. The statistical analysis results for this study show that frequency is positively associated with both sound change processes, while the frequency change factor is positively related with diphthongization and negatively associated with palatalization. The claim in previous studies that it is either high frequency or low frequency words that lead sound change has been rejected by this study. The frequency change factor, which almost no work has investigated, shows different mechanisms in different kinds of sound change.

      • KCI등재

        Study on the response surface optimization of online upgrading of bio-oil with MCM-41 and catalyst durability analysis

        Liu Sha,Cai Yi-xi,Fan Yong-sheng,Li Xiao-hua,Wang Jia-jun 대한환경공학회 2017 Environmental Engineering Research Vol.22 No.1

        Direct catalysis of vapors from vacuum pyrolysis of biomass was performed on MCM-41 to investigate the effects of operating parameters including catalyzing temperature, catalyzing bed height and system pressure on the organic yields. Optimization of organic phase yield was further conducted by employing response surface methodology. The statistical analysis showed that operating parameters have significant effects on the organic phase yield. The organic phase yield first increases and then decreases as catalyzing temperature and catalyzing bed height increase, and decreases as system pressure increases. The optimal conditions for the maximum organic phase yield were obtained at catalyzing temperature of 502.7℃, catalyzing bed height of 2.74 cm and system pressure of 6.83 kPa, the organic phase yield amounts to 15.84% which is quite close to the predicted value 16.19%. The H/C, O/C molar ratios (dry basis), density, pH value, kinematic viscosity and high heat value of the organic phase obtained at optimal conditions were 1.287, 0.174, 0.98 g/cm3, 5.12, 5.87 mm2/s and 33.08 MJ/kg, respectively. Organic product compositions were examined using gas chromatography/mass spectrometry and the analysis showed that the content of oxygenated aromatics in organic phase had decreased and hydrocarbons had increased, and the hydrocarbons in organic phase were mainly aliphatic hydrocarbons. Besides, thermo-gravimetric analysis of the MCM-41 zeolite was conducted within air atmosphere and the results showed that when the catalyst continuously works over 100 min, the index of physicochemical properties of bio-oil decreases gradually from 1.15 to 0.45, suggesting that the refined bio-oil significantly deteriorates. Meanwhile, the coke deposition of catalyst increases from 4.97% to 14.81%, which suggests that the catalytic activity significantly decreases till the catalyst completely looses its activity.

      • Chinese Domestic Housing Policies

        Sha Liu,Nicole Gurran 한국주거학회 2015 한국주거학회 국제학술대회논문집 Vol.2015 No.4

        The increasing integration of the globalized financial market and real estate has resulted in growing levels of international investment in property markets. Particularly, in recent years, it has been observed that investors from China have become increasingly active in global real estate markets, which has been widely criticized to exacerbate existing affordability pressures in recipient nations. Though general explanations for the phenomenon have been posited (asset protection, education, immigration, retirement housing, accommodation for multi-national firms), little is known about the underlying drivers of Chinese foreign investment in real estate. This paper, focusing on the impacts of China’s recent domestic housing policies, examines why individual Chinese investors and development firms have changed their investment strategies and decided to develop/purchase properties overseas. Through conducting 15 in-depth interviews with four groups of participants, it has been found that China’s domestic interventional housing policies- in particular, the ‘purchase restriction’ policy, have not only created great impacts on its domestic housing market, but also encouraged Chinese outward investment in real estate. Therefore, it implies, as housing market becomes global, the adjustment of one country’s domestic housing policies has inevitably produced direct and indirect impacts on international real estate arenas.

      • 项目教学法融入二外德语教学的实践探索—基于山东理工大学实践案例的实证分析

        刘莎(Sha Liu) YIXIN 출판사 2024 教育教学研究论丛 Vol.2 No.7

        Project-based teaching is an active, integrated, and action-oriented pedagogical method, predominantly utilized in science and engineering disciplines. It is extensively employed in advanced language learning but is rarely experimented with in foundational language instruction, lacking necessary data support and corresponding empirical analysis. This paper takes a second foreign language (German) project-based teaching class for third-year English undergraduates at Shandong University of Technology as a case study. By analyzing statistical data, it provides a preliminary feasibility analysis of the application of project-based teaching in second foreign language education. 项目教学法是一种积极的、综合的、以行动为导向的教学方法,多用于理工类专业,在语言类专业高级阶段教学中使用较为广泛,但在语言类基础教学中仍鲜有尝试,且缺乏必要的数据支持和相应的实证分析。本文以山东理工大学英语本科三年级二外德语项目教学法实施课堂为案例,通过数据统计,对项目教学法在二外德语教学中的应用做出简要的可行性分析。

      • KCI등재

        Design a Laboratory Rotating Test Bench for the Multi-Channel Dryer Experiment

        Sha Wang,Jixian Dong,Changke Tan,Bo Wang,Lijie Qiao,Huan Liu 한국펄프·종이공학회 2019 펄프.종이기술 Vol.51 No.5

        The dryer of paper machine has problem in discharging condensate water. When the dryer rotates at a high speed, the condensate water that is not discharged in time will form a water ring, resulting in low drying efficiency and high energy consumption. Thus, based on the multi-channel dryer proposed by others, a series of experiments was carried out on multi-channel dryer under static condition. However, due to the fact that the research condition of condensation and heat transfer of multi-channel dryer is not exactly the same as the actual working condition, the multi-channel dryer has not been introduced to the market. To address the above problems, this paper presented a rotating test bench which can better simulate the actual working condition of dryer and expounded the working principle of the test bench, as well as the design and calculation of rotary device of the test bench. Finite element analysis software was used to analyze the stress on the dryer channel. In order to avoid resonance problems, modal numerical analysis was conducted on the test bench, which provided experimental conditions for the further study of multi-channel dryer.

      • SCOPUSKCI등재

        Predicting Due Dates under Various Combinations of Scheduling Rules in a Wafer Fabrication Factory

        Sha, D.Y.,Storch, Richard,Liu, Cheng-Hsiang Korean Institute of Industrial Engineers 2003 Industrial Engineeering & Management Systems Vol.2 No.1

        In a wafer fabrication factory, the completion time of an order is affected by many factors related to the specifics of the order and the status of the system, so is difficult to predict precisely. The level of influence of each factor on the order completion time may also depend on the production system characteristics, such as the rules for releasing and dispatching. This paper presents a method to identify those factors that significantly impact upon the order completion time under various combinations of scheduling rules. Computer simulations and statistical analyses were used to develop effective due date assignment models for improving the due date related performances. The first step of this research was to select the releasing and dispatching rules from those that were cited so frequently in related wafer fabrication factory researches. Simulation and statistical analyses were combined to identify the critical factors for predicting order completion time under various combinations of scheduling rules. In each combination of scheduling rules, two efficient due date assignment models were established by using the regression method for accurately predicting the order due date. Two due date assignment models, called the significant factor prediction model (SFM) and the key factor prediction model (KFM), are proposed to empirically compare the due date assignment rules widely used in practice. The simulation results indicate that SFM and KFM are superior to the other due date assignment rules. The releasing rule, dispatching rule and due date assignment rule have significant impacts on the due date related performances, with larger improvements coming from due date assignment and dispatching rules than from releasing rules.

      • KCI등재

        Evaluation of the genetic diversity of six Chinese indigenous chickens

        Sha Yuzhu,Gao Caixia,Liu Meimei,Zhao Shengguo 아세아·태평양축산학회 2020 Animal Bioscience Vol.33 No.10

        Objective: The extensive breeding of commercial chickens has led to a sharp decrease in the resources of many indigenous chickens, especially the indigenous chickens in the southeastern coastal region, which are on the verge of extinction, and the indigenous chickens in the northwestern region of China, which are also at risk. However, there are few reports on the evaluation of genetic diversity and conservation of genetic resources of indigenous chickens in remote areas in the Northwest of China. Methods: In the present study, the genetic diversity and phylogenetic relationship of six indigenous chickens from different regions were studied based on variation in mitochondrial DNA control region (D-loop), and the degree of introgression from commercial breeds into these chickens was determined by the amount of haplotype sharing between indigenous and commercial breeds. Results: Twenty-five polymorphic sites and 25 haplotypes were detected in 206 individuals. Principal component analysis showed that the Jingning chicken had the highest genetic diversity among the six indigenous chickens. According to the degree of introgression, the six indigenous breeds may be involved in haplotype sharing with commercial breeds, and the introgression from commercial chickens into the Haidong chicken is the most serious. Conclusion: The genetic uniqueness of indigenous chickens has been eroded, so it is necessary to consider the protection of their genetic resources. Phylogenetic analysis suggests that the six indigenous chickens have two major matrilineal origins: one from Yunnan or its surrounding areas in China and the other from the Indian subcontinent.

      • KCI등재

        In vitro evaluation of 9-(2-phosphonylmethoxyethyl)adenine ester analogues, a series of anti-HBV structures with improved plasma stability and liver release

        Sha Liao,Shi-Yong Fan,Qin Liu,Chang-Kun L,Jia Chen,Jing-Lai Li,Zhi-Wei Zhang,Zhen-Qing Zhang,Bo-Hua Zhong,Jian-Wei Xie 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.11

        Chronic hepatitis B virus (HBV) infection maylead to liver cirrhosis and hepatocellular carcinoma, butfew drugs are available for its treatment. Acyclic nucleosidephosphonates (ANPs) have remarkable antivirusactivities but are not easily absorbed from the gastrointestinaltract and accumulate in the kidneys, resulting innephrotoxicity. Therefore, there is a need to find effectiveliver site-specific prodrugs. The dipivaloyloxymethyl esterof 9-(2-phosphonylmethoxyethyl)adenine (PMEA)—adefovirdipivoxil (ADV)—is a first-line therapy drug forchronic hepatitis B with a low therapeutic index because ofrenal toxicity and low hepatic uptake. In this study, a seriesof PMEA derivatives were synthesized to enhance plasmastability and liver release. The metabolic stability of ADV(Chemical I) and its two analogues (Chemicals II and III)was evaluated in rat plasma and liver homogenate in vitro. An ion-pair reverse-phase HPLC–UV method and a hybridion trap and high-resolution time-of-flight mass spectrometry(LC-IT-TOF-MS) were used to evaluate the degradationrate of the analogues and to identify their intermediatemetabolites, respectively. Chemicals I and II were hydrolyzedby cleavage of the C–O bond to give monoesters. Sufficient enzymatic activation in the liver homogenatethrough a relatively simple metabolic pathway, in additionto a favorable stability profile in rat plasma, made ChemicalII an optimal candidate. Next, six analogues based onthe structure of Chemical II were synthesized and evaluatedin plasma and liver homogenate. Compared toChemical II, these compounds generated less active PMEAlevels in rat liver homogenate. Therefore, chemical modificationof Chemical II may lead to new promising PMEAderivatives with enhanced plasma stability and liveractivation.

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