유아의 어머니와 교사에 대한 애착유형에 따른 사회적 놀이연구

김지연,정계숙 부산대학교 영유아보육연구소 2007 영유아보육연구 Vol.13 No.-

A study on the impact of homestay sharing platform on guests" online comment willingness

Ji-Kai Zou(조우지카이),Teng-Yue Liang(양등월),Cui Dong(동초희) 한국컴퓨터정보학회 2020 韓國컴퓨터情報學會論文誌 Vol.25 No.12

본 논문의 연구 목적은 공유숙박 비즈니스 바탕으로 숙박 플랫폼이 세입자의 온라인 리뷰 의향에 미치는 영향을 연구하는 것이다. 기존 숙박예약 모델보다 공유숙박 중 숙박 플랫품, 집주인, 세입자 간을 공유하는 독립성이 더 명확하다. 공유숙박 플랫폼은 집주인과 세입자간의 오프라인 숙박서비스를 완료하고 거래를 실현할 수 있도록 다양한 지원 서비스를 제공하는 것은 물론, 공유숙박 플랫폼은 세입자가 집주인에게 객관적이고 적극적으로 평가하도록 장려하는 특정 조치를 파악해야 한다. 공유숙박에 대한 신용 생태를 더 잘 확립할 수 있도록 필요하다. 본 논문에서는 공유숙박 플랫폼을 사용해본적 있는 소비자들을 대상으로, 2주간의 설문 조사를 하고 SPSS24.0 프로그램을 사용하여 데이터가 분석되었다. 이 논문의 연구결과는: (1) 플랫폼 리뷰 기능의 사용 용이성, 세입자의 만족도 및 플랫폼 리뷰 인센티브가 세입자의 온라인 리뷰 의향에 긍정적인 영향을 미친다. (2) 플랫폼의 신용 메커니즘은 세입자의 만족도가 온라인 리뷰 의향에 영향을 미치는 과정에서 긍정적인 영향을 미친다. The purpose of this study is to explore the impact of home stay platform on guests" willingness to comment online under the Shared home stay business model. Shared platform of home stay facility in addition to providing a variety of support services, help the landlord to the tenant do offline accommodation services, implementation, trading, will need to take some measures to actively promote the tenant groups to the landlord, the evaluation is objective, effective and sufficient number in order to better promote the sharing credit ecological establishment of home stay facility. In this study, consumers who have used the Shared home stay platform are taken as the research objects. The survey method adopts network questionnaire survey and Likert seven subscales. The statistical software SPSS24.0 program is used to process the data. Firstly, descriptive statistical analysis was conducted, followed by validity analysis and reliability analysis. After the reliability and validity of the questionnaire were determined, correlation analysis and regression analysis were used to verify the proposed hypothesis. The research results of this study are summarized as follows :(1) the usability of platform comment function, guest satisfaction and platform reward have a positive impact on the guest online comment willingness; (2) The credit mechanism of the platform has a positive regulating effect on the process of tenant satisfaction influencing tenant comment intention.

A study on the impact of host"s personalized offline services and platform ease of use on shared homestay consumers" purchase intention

Ji-kai Zou,Sung-joon Yoon(윤성준) 한국컴퓨터정보학회 2021 韓國컴퓨터情報學會論文誌 Vol.26 No.7

전통적인 경제 모델과 달리 공유 경제 모델에 있어 "공급"과 "소비"의 관계에서 가장 큰 변화는 공급자가 비표준화 된 개인 공급자가 되어 다양한 개인화 서비스를 실현할 수 있다는 것이다. 반면에 개인 서비스 제공 업체에 대한 신뢰 문제도 있을 수 있다. 본연구에서는 에어비앤비를 연구대상으로 공유 홈스테이 모델에 따른 개인화 서비스와 편의성이 소비자의 구매 의도에 어떤 영향을 미치는지와, 플랫폼 신뢰를 형성하는 소비자의 혁신적 성향의 조절역할을 조사한다. 연구결과, 공급자의 개인화 서비스와 편의성은 공유 경제 플랫폼에 대한 소비자의 신뢰와 지각된 가치에 대한 매개 효과를 통해 소비자의 최종 구매 의도에 긍정적인 영향을 미쳤다. 또한 소비자의 혁신적 성향은 지각된 가치와 플랫폼 신뢰에 영향을 미치는 개인화 서비스과정에서 긍정적인 조절역할을 하였다. Different from previous studies, this study focuses on accommodation providers" personalization services and platform convenience variables, identifying how these prior factors affect perceived value and trust in accommodation services on a shared homestay platform, and how consumers" innovation plays a role in the process. Through this, we would like to identify the mechanism of interaction between accommodation service providers and consumers mediated by the shared homestay platform and present implications for a more customer-centered platform operation strategy. This study has an extended meaning for prior research, empirically confirming that the increase in personalized offline service quality of personalized hosts in shared economic models has a positive impact on perceived value and platform trust of consumers. At the same time, we confirm that under the shared economy model, consumers" innovation propensity plays an important positive role in regulating their perceived value aspects as well as their confidence in the platform.

Research on Home Stay Sharing Platform in Chinese Market Including Multinational Corporations : The Influence of Platform Operation on Customers’ Purchase Intention

Zou-Ji Kai,Guo-Han Wen 한국무역통상학회 2020 무역통상학회지 Vol.20 No.4

At present, the home-stay sharing industry all over the world is developing rapidly. Take the home-stay sharing industry in The Chinese market as an example, there are not only multinational companies like Airbnb, but also many local brands. This paper hopes to make an empirical study on the operation of the home-stay sharing industry platform in the Chinese market and draw a conclusion worthy of reference. Compared with traditional e-commerce, there are more obvious tripartite relationships among sellers, platforms and buyers in the Sharing business ecology. Among them, the intermediary and regulating role of Sharing business platform for the relationship between buyers and sellers becomes the core to ensure the sound operation of Sharing business. In this paper, users of the four leading platforms in the Chinese market, Airbnb, Tujia Home Stay and Xiaozhu Home Stay, are selected as research samples. The research model was validated by questionnaire survey and factor analysis. By studying the influence of the two core functions of Shared commercial platforms, “platform credit mechanism” and “platform personalized recommendation”, on the purchase intention of Sharing Home Stay tenant, effective Suggestions are proposed for the further improvement of the operation of Sharing accommodation platform.

유아교사의 심리적 임파워먼트가 교육공동체 인식과 교사

정계숙(Chung, Kai-Sook),차지량(Cha, Jee-Ryang),이지연(Lee, Ji-youn),문지애(Mun, Ji-ae) 한국열린유아교육학회 2017 열린유아교육연구 Vol.22 No.1

본 연구는 유아교육 현장에서 교육공동체 구현의 필요성이 제기되는 시점에 유아교사의 심리적 임파워먼트가 유아교육공동체 인식과 교사-부모 간 협력과의 관계에서 매개효과를 가지는지에 대해 살펴보는 것이 목적이다. 이에 유치원과 어린이집에 근무하는 유아교사 총 197명을 대상으로 유아교육공동체 인식 척도, 교사 심리적 임파워먼트 척도 및 교사-부모 협력 척도를 사용하여 자료를 수집하고 상관분석 및 Baron과 Kenny(1986)의 중다회귀분석을 이용한 매개효과 분석 절차에 따라 자료를 분석하였다. 연구 결과, 교사의 유아교육공동체 인식, 교사의 심리적 임파워먼트 및 교사-부모 협력 간에는 정적 상관이 있었으며, 교사의 심리적 임파워먼트는 유아교육공동체 인식과 교사-부모 협력과의 관계에서 부분 매개효과를 갖는 것이 확인되었다. 이러한 연구결과는 교사-부모 협력 증진을 위해 교사의 심리적 역량 향상과 유아교육공동체 구현이 중요함을 알게 해주었으며 교사교육에 관한 시사점을 제공하였다는데 의의가 있다. The purpose of this study is to identify the mediating effects of early childhood teachers’ psychological empowerment in the relationship between their awareness of educational community and cooperation with parents. This research reflects the current status in the early childhood educational sector because the establishment of educational community has been raised as a crucial matter. Data collection was conducted among 198 nursery teachers of kindergartens and day care centers using several rating scales: teachers’ perception of early childhood educational community, teachers’ psychological empowerment and parent-teacher cooperation. The data were analyzed according to the procedures of correlations and the mediating effects of multiple regressions (Baron & Kenny, 1986). Results demonstrated a positive relationship among the three variables. The teacher’s psychological empowerment has partial mediating effect in the relationship between teacher’s perception of early childhood educational community and cooperation with parents. Findings also show a significant implication regarding teacher training and educational courses. The promotion of cooperation with parents can be facilitated by teachers’ psychological competence and the establishment of early childhood educational community.

An Optimized Hierarchical Handoff Method with Mobile IP and SIP

Kai Zhang(장개),Ji-Gong(공길),Yoonhwan Park(박윤환),Kisung Yu(유기성),Gihwan Cho(조기환) 한국멀티미디어학회 2008 한국멀티미디어학회 학술발표논문집 Vol.2008 No.1

In the 4 generation(4G) wireless network, mobility management can be effectively achieved by applying Mobile IP(MIP) and the Session Initiation Protocol(SIP) in cooperatively. However, an important and challenging issue is the handoff management in this architecture. In this paper, we present an optimized handoff method with MIP and SIP. Two mechanisms are proposed to resolve micro-mobility, along with same domain mobility. Micro-mobility handoff manages movements in the one area, while same domain mobility handoff manages movements between two neighboring are as. This method makes use of a retransmission for micro-mobility, and multicasting to re-establish a traffic flow for same domain mobility.

Surface nanocrystallization and its properties of a rare earth magnesium alloy induced by HVOF―SMB

Kai-dong Xu,Ji-na Wang,Ai-hua Wang,Hua Yan,Xiang-lin Zhang,Zao-wen Huang 한국물리학회 2011 Current Applied Physics Vol.11 No.3

The nanocrystalline microstructure in the surface of a rare earth magnesium alloy induced by a new process named HVOF―SMB (high velocity oxygen-fuel flame supersonic microparticles bombarding) has been characterized by means of X-ray diffractometry (XRD) and high-resolution transmission electron microscopy (HRTEM). The effects of HVOF―SMB on mechanical properties and corrosion resistance of the magnesium alloy have been investigated by microhardness distribution and polarization curves, and the cross-sectional observation of the treated Mg alloy sample has been characterized by optical microscopy (OM). Results showed that HVOF―SMB can induce surface nanocrystallization with a grain size level less than 20 nm at topmost surface layer, and the microhardness at the top surface layer increases up to about 170 HV_0.025 which is twice more than that of the substrate. The grain size increases as well as the microhardness decreases gradually with the depth varying from surface to substrate. The potentiodynamic polarization curves indicate that the HVOF―SMB treated surfaces show lower corrosion resistance in comparison with the untreated magnesium alloy in 3.5% NaCl solution. The underlying mechanism of the electrochemical properties on the nanocrystalline Mg-based alloy’s surface induced by severe plastic deformation in corrosion resistance is discussed.

Nonruminant Nutrition : Evaluation of Un-fasted Pig Stomach Spent Feed as a Substitute in Finishing Pigs Diet

( Kai Kaingmean ),( Jun Yeob Lee ),( Myeong Ho Lee ),( Sang Yun Ji ),( Hong Gil Moon ),( Sang Jip Ohh ) 한국동물자원과학회(구 한국축산학회) 2011 한국축산학회지 Vol.53 No.6

Insufficient pre-slaughter fasting leaves serious amount of feed-like contents(designated here as un-fasted stomach spent feed, USSF) in the eviscerated pig stomach. This study was intended to evoke economical and environmental seriousness of USSF discharge by estimating its value as pig feed. For finishing pigs feeding trial, three levels(0, 5, and 10%) of USSF were blended with pig feed to prepare control and two treatment diets, respectively. A total of 42(21 males, 21 females) crossbred (Landrace× Yorkshire×Duroc) finishing pigs weighing 81.5±8.0kg were employed to 28d feeding trial and in vivo digestibility trial by Cr2O3 indicator method with 7 males and 7 female pigs per treatment. In vitro total tract digestion of USSF showed 70.5% and 57.6% of DM and OM digestibilities, respectively which were poorer(p<0.05) than those of pig diet. There were no differences in body weight gain, daily feed intake and feed conversion ratio among treatments although 10% USSF substitution exerted relatively poor performance. In vivo apparent digestibilities of diets containing USSF 5% and 10% were lower(p<0.05) than that of 100% pig feed. There were no differences(p>0.05) in dressing percentage and carcass grade among treatments. Results of this study showed that 5% USSF substitution in finishing pigs diet did not exert any disadvantage in terms of production performance and carcass grade. This study implied that un-fasted slaughter causing excessive excretion of USSF should be avoided. If not avoidable, the USSF should not be wasted in abattoir but could be recycled as pig feed.

Design of Control IC for Multiphase Interleaved Buck Converter with Alternate Phase-Shedding

Ji-Shiang Lee,Chun-Yu Huang,Tsorng-Juu Liang,Kai-Hui Chen 전력전자학회 2015 ICPE(ISPE)논문집 Vol.2015 No.6

In this paper, a controller for a multiphase interleaved buck converter with alternate phase-shedding is realized. With phase-shedding control, the efficiency at low load condition is improved by turning-on appropriate number of phase(s), but the temperature on the active phase(s) is higher than the off phase(s) that cause the temperature unevenly distribution. To solve this problem, the alternate phase-shedding is implemented in the proposed controller. The phases take turns to provide the load current at low load condition to distribute power to each phase and share the same load as well as improve reliability. The proposed controller would implement interleaved control regardless the number of active phases. In addition, taking advantage of the application of high step-down ratio, the proposed control structure that input current is sensed to control each phase is adopted. The number of components and pins of controller can be reduced. This chip is fabricated with TSMC 0.25um CMOS high voltage mixed signal general purpose process and is tested with an input voltage of 12 V, output voltage of 1.2 V, and output power of 72 W three-phase buck converter to verify the feasibility.

LncRNA SNHG6 promotes glycolysis reprogramming in hepatocellular carcinoma by stabilizing the BOP1 protein

Kai Chen,Xi Wang,Bowen Wei,Rongcun Sun,Chunlin Wu,Hong-ji Yang 한국통합생물학회 2022 Animal cells and systems Vol.26 No.6

Metabolic reprogramming is an important feature in tumor progression. Long noncoding RNA’s (lncRNA) small nucleolar RNA host gene 6 (SNHG6) acts as a proto-oncogene in hepatocellular carcinoma (HCC) but its role in glycolysis is mostly unknown. The role of SNHG6 and Block of proliferation 1 (BOP1) on glycolysis is assessed by glucose uptake, lactate production, oxygen consumptive rate (OCR) and extracellular acidification rate (ECAR) and glycolytic enzyme levels. The regulatory effect of SNHG6 on BOP1 protein was confirmed by Western blotting, MS2 pulldown, RNA pull-down, and RIP assay. SNHG6 and BOP1 levels were increased in HCC tissues and cells. SNHG6 and BOP1 were prognostic factors in HCC patients and significantly correlated to TP53 mutant and tumor grade. SNHG6 promoted proliferation, inhibited apoptosis, enhanced glucose uptake and lactate production, decreased OCR, and increased ECAR in HCC cell lines. SNHG6 could bind the BOP1 protein and enhance its stability. BOP1 overexpression rescued the change of proliferation, apoptosis, and glycolysis in HCCLM3 and SMMC-7721 cells. Our data indicate that SNHG6 accelerates proliferation and glycolysis and inhibits the apoptosis of HCC cell lines by binding the BOP1 protein and enhancing its stability. Both SNHG6 and BOP1 are promising prognostic and therapeutic markers in HCC.