더우인(TikTok) 라이브 커머스(사용자들의) 구매의도 영향 요인에 관한 연구

박동일,김동현,김민용 한국인터넷전자상거래학회 2022 인터넷전자상거래연구 Vol.22 No.2

With the continuous development of the Internet and e-commerce, the pattern of online shopping is deeply applied to people's daily life. Recently, many business platforms are pursuing innovation to meet the needs of various users. As the total transaction volume of e-commerce live commerce continues to increase, the approach of consumers has gradually become a new growth point fore-commerce platforms. Therefore, we investigated how this e-commerce live commerce affects the purchase intention of users. Based on the "stimulus-object-response (S-0-R)" theory and the theory related to customer perceived value, this study set discount event, personal attraction, interest, and interaction as stimulus factor variables. Perceived reliability, perceived functional value, and sentimental value were taken as parameters, and the customer's purchase intention was set as the outcome variable. In this study, a total of 219 responses were collected through an online survey and used for analysis. The reliability and validity of the model were analyzed using the SPSS27.0 and AM0S27.0 statistical packages, and path analysis was performed to verify the hypothesis. According to the analysis results, discount events, caster's personal attractiveness, interest, and interaction have a positive effect on consumer confidence. A caster's personal attractiveness and interest have a positive effect on perceived functional value. Interest has a positive effect on perceived functional value. Discount events, caster's personal attractiveness, and interactions do not affect perceived functional value. A caster's personal attractiveness, interest, and interaction have a positive effect on perceived sentimental value. The discount event does not affect the perceived sentimental value. Reliability, perceived functional value, and perceived sentimental value have a positive effect on purchase intention. Therefore, we believe that itwill be possible to effectively introduce products in live commerce, continuously create high-quality content, take full advantage of the caster's personal influence, create "star" casters, and further develop the live commerce market.

Slope Driving Experiment of Front Drive Type Electric Wheelchair with Casters using Yaw-rate Compensation

Aydin Tarik Zengin,Yutaro Maruno,Hiroshi Okajima,Nobutomo Matsunaga 제어로봇시스템학회 2012 제어로봇시스템학회 국제학술대회 논문집 Vol.2012 No.10

Electric-powered wheelchairs have been used as a convenient transport device for elderly and disabled. Recently, a front drive type electric wheelchair that is easy for a disabled person to climb on from a bed has been focused on. However, front-drive-type wheelchairs are hard to run straight and difficult to operate because their over-steering characteristic is strong owing to free casters. If the wheelchair can be driven by an easy control stick operation, it will be a comfortable function for disabled persons. In our previous study, we proposed a front-drive-type wheelchair control method which realizes comfortable functions, i.e. driving with easy stick operation like the traditional rear-drive-type wheelchair. The proposed control system uses ideal model of electric wheelchairs. By using our proposed method, the maneuverability can be improved for realizing easy stick operation. In this paper, we evaluate the effectiveness of our proposed method by simulations and experiments on a slope with electric-powered front-drive-type wheelchair. In particular, straight-ahead stability on slope is analyzed by human driving.

이중구조를 가진 비공기압바퀴의 구조해석에 관한 연구

송기환,이상훈,손창우,서형진,서태일,유화열,박성학,김경훈,Song, Gi-Hwan,Lee, Sang-Hun,Son, Chang-Woo,Seo, Hyoung-Jin,Seo, Tae-Il,Yoo, Wha-Wul,Park, Sung-Hak,Park, Kyung-Hoon 한국금형공학회 2015 한국금형공학회지 Vol.9 No.3

Non-pneumatic wheels have been widely used instead of general tube type wheels beause of many reasons, for example, wheel size, price restriction, heavy-duty problem and so on. Almost small size wheels or casters were non-pneumatic type but structural stability was not certified. This paper presents a double structured non-pneumatic wheel, called "smart caster", which consisted with inner and outer wheels connected by chips, and finite element analysis processes were conducted in order to determine important dwsign factors before actual design for mass production. For structural analysis ABAQUS was used under various boundary conditions with incrementally varied loads until 2,000N. Then structural staility was evaluated according to varied loads below ultimate stress. Generally stresses were concentrated at the lower parts of the wheel, and especially contact parts between wheel and ground. In addition, maximum stress appeared at contact parts between the wheel lower part and chips.

소셜 빅데이터 기반 2016리우올림픽 축구 관련 이슈 및 인물에 대한 연관단어 분석

박성건(SunggeonPark),이수원(SoowonLee),황영찬(YoungchanHwang) 한국체육학회 2017 한국체육학회지 Vol.56 No.2

본 연구의 목적은 소셜 빅데이터를 기반으로 리우올림픽 축구 관련 이슈 및 인물에 대한 대중들의 주요 관심사를 알아보는 것이다. 본 연구를 위해 수집된 데이터는 2016 리우올림픽 한국축구 경기와 관련된 웹 뉴스 및 댓글이다. 경기별 주요 이슈 및 대중들의 관심사를 알아보기 위해 연관단어 분석을 실시하고, NodeXL을 이용하여 시각화하였다. 연구 결과, 대중들에게 높은 관심을 받은 경기는 피지와의 경기, 한국축구대표팀 관련 인물은 손흥민, 해설위원은 이영표, 캐스터는 조우종으로 나타났다. 리우올림픽에 출전한 한국축구대표팀에 대한 대중들의 생각은 일부 부정적인 평가가 나타났지만, 대체로 긍정적인 것으로 평가할 수 있다. 해설위원 및 캐스터에 대한 대중들의 관심은 경기결과 및 예측, 설명에 대한 재치, 해설위원 및 캐스터의 호흡, 즐거움 요소(예능)로 나타났다. 결론적으로, 스포츠빅이벤트에 대한 대중들의 관심을 높일 수 있는 방안은 다양한 스포츠 분석 콘텐츠 제공, 전문성과 예능감 등을 겸비한 방송해설자 선정이 될 수 있다. This paper seeks to better understand the focal issues and persons related to Rio Olympic soccer games through social data science and analytics. This study collected its data from online news articles and comments specific to KOR during the Olympic football games. In order to investigate the public interests for each game and target persons, this study performed the co-occurrence words analysis. Then after, the study applied the NodeXL software to perform its visualization of the results. Through this application and process, the study found several major issues during the Rio Olympic men’s football game including the following: the match between KOR and PIJ, KOR player Heungmin Son, commentator Young-Pyo Lee, sportscaster Woo-Jong Jo. The study also showed the general public opinion expressed positive words towards the South Korean national football team during the Rio Olympics, though there existed negative words as well. Furthermore the study revealed positive attitude towards the commentators and casters. In conclusion, the way to increase the public's interest in big sporting events can be achieved by providing the following: contents that include various professional sports analysis, a capable domain expert with thorough preparation, a commentator and/or caster with artistic sense as well as well-spoken, explanatory power and so on. Multidisciplinary research combined with sports science, social science, information technology and media can contribute to a wide range of theoretical studies and practical developments within the sports industry.

연속 주조 공정에서 평균 토크전류 추종에 의한 인발력 분배 제어

천창근,김철우,Chun, Chang-Keun,Kim, Cheul-U 한국조명전기설비학회 2004 조명·전기설비학회논문지 Vol.18 No.3

연속 주조 공정에서 설정한 속도로 주편을 인발하는 스트랜드 구동롤에 인발력이 적절하게 분배가 되지 않으면 주형 레벨의 주기적인 변동을 유발시킴과 동시에 주편의 품질을 저하하게 된다. 따라서 본 논문에서는 주편의 속도를 제어함과 동시에 각 구동롤에 운전자가 원하는 비율로 인발력을 분배할 수 있는 알고리즘을 제안한다. 제안된 방법은 전동기에 작용하는 토크 전류를 상위 제어기로 귀환하여 평균 토크 전류를 산출하고 각 구동롤 전동기의 토크 전류와 비교하여 전동기의 속도 기준값을 미소하게 변경함으로써 각 구동롤 전동기의 토크 전류가 평균 토크 전류에 추종하도록 하여 인발력을 분배한다. 그리고 과도상태 개선을 위하여 안티와인더업(anti-wind up) 제어기를 가진 인발력 제어기를 적용하였으며, 제안된 알고리즘의 확인을 위하여 포스코의 시험연주기에 적용하여 우수성을 입증하였다. If the withdrawal force of strand driven roll which is controlled with predetermined speed isn't distributed regularly in continuous casting process, mold level is changed cyclically and slab quality is not good. In this paper, both casting speed control and load sharing control algorithm of strand driven roll according to ratio which is set up by operator at same time is proposed. The proposed algorithm is to share the withdrawal force by following torque current of each driven roll as average torque current by changing speed reference of each driven roll motor. The load sharing control with anti-wind up for improvement transient state is adopted and the proposed algorithm is implemented in POSCO pilot caster.

Bed-Leaving Behavior Detection and Recognition Based on Time-Series Learning Using Elman-Type Counter Propagation Networks

Hirokazu Madokoro,Kantarou Kakuta,Ryo Fujisawa,Nobuhiro Shimoi,Kazuhito Sato,Li Xu 제어로봇시스템학회 2014 제어로봇시스템학회 국제학술대회 논문집 Vol.2014 No.10

This paper presents a bed-leaving detection method using Elman-type Counter Propagation Networks (ECPNs), a novel machine-learning-based method used for time-series signals. In our earlier study, we used CPNs, a form of supervised model of Self-Organizing Maps (SOMs), to produce category maps to learn relations among input and teaching signals. For this study, we inserted a feedback loop as the second Grossberg layer for learning time-series features. Moreover, we developed an original caster-stand sensor using piezoelectric films to measure weight changes of a subject on a bed to be loaded through bed legs. The features of our sensor are that it obviates a power supply for operations and that it can be installed on existing beds. We evaluated our sensor system by examining 10 people in an environment representing a clinical site. The mean recognition accuracy for seven behavior patterns is 71.1%. Furthermore, the recognition accuracy for three behavior patterns of sleeping, sitting, and leaving the bed is 83.6% Falsely recognized patterns remained inside of respective categories of sleeping and sitting. We infer that this system is applicable to an actual environment as a novel sensor system requiring no restraint of patients.

범어사 옹정6년명 동종연구

최춘욱 ( Chun-uk Choi ) 부산광역시사편찬위원회 2011 항도부산 Vol.27 No.-

The bell tower of Beomeosa Temple has a copper bell hanged inside. The bell has writings inscribed on the body, which reads it was made by a bell caster names Kim Seong Won in the 6th-year reign of emperor Ongjeong, or 1728. The copper bell was made earlies among all temple bells remained in Busan. It is called the Beomeosa Temple Ongjeong 6th Year Copper Bell and also designated as Tangible Cutural Asset No. 90 of Busan Metropolitan City. The copper bell largely consists of round-shaped cheonpan and the body, Cheonpan has two-dragon models decorated on the top or youngnyu. The body has Sanskrit patterns rounded around the upper part and 4 lotus bud patterns mold, an image of Bodhisattva, palatine tablet, which is a symbol to pray for the stability of the dynasty, and the plates of writings or sentence board inscribed around the center. All of these components followed temple bells made in the late Joseon period, collectively called bells of complex style. Regarding the styles of local temple bells, traditional features seen in temple bells of the Unified Shilla period were unchangeably succeeded to the Koryo Period. But in the late Koryo period, temple bells of Chinese style were introduced. In the Joseon period, since then, lots of temple bells were made in complex style, which was based on the conbination of the foresaid traditional and Chinese styles. In the late Joseon Period, handiwork tranders or, accurately, private handicraftsmen played a critical role in the manufacture of temple bells. As bell casters, they made the bells that had some characteristics reflecting their respective personality. Private handicraftsman Kim Seong Won, who made the cooper bell of the Beomeosa Temple, was one of the most active and representative bell casters of the late Joseon period which included Kim Yong Am and Kim Ae Rip. He learned casting skills from his father Kim Sang Rip who served as a bell caster mainly in the Jeolla province between the late 17th and 18th centuries. Based on the skills, Kin Seong Won made lots of activities as a bell caster in that province in the ear4ly 18th century, making the bells of the Seonamsa Temple in 1700 and the Bulgapase Temple in 1702, the main building bell of the Okcheonsa Temple and Mansusa Temple bell of the Wonhyosa Temple in 1710. At last, he cast the copper bell of the Beomeosa Temple that had features found in temple bells of complex style dominant in the late Joseon period. As can be seen in the cooper bell, two dragon models on cheonpan which are combined with each other and whoes respective head is raised forward, comb-patterned yeongwak shaped lotus buds and hwamunjwa or flower patterns looking like saw-toothed wheels inside yeongwak, the image of Bodhisattva who are a little unnaturally standing up with his hands clasped, a projected horizontal stripe turned around a little above the opening of the bell and sentence board or the plates of writings arranged above the stripe belong to some of the features that are found only in temple bells made by Kim Seong Won. Largest among all temple bells he made and even more stylish, the copper bell of the Beomeosa Temple represents the perfection of his own casting skills. It still remains unclear how the cast work or the cooper bell made by Kin Seong Won, one of the most representative private handicraftsmen in the Joseon period, actually could be enshrined in the Beomeosa Temple and maintained till present. The copper bell is one of the best cultural assets in which Busan takes the highest pride, so it needs to be preserved and managed in more effective and systematic ways.

제강용주조기 가이드 롤의 표면 오버레이용접에 관한 연구

국종한(Jong-Han Kook) 산업기술교육훈련학회 2013 산업기술연구논문지 (JITR) Vol.18 No.2

This study aims to investigate efficient techniques for mending the guide roll of the caster machine, which is one of the pieces of equipment needing frequent repair in the integrated process of ironworks. In the guide roll of the caster machine often appear abrasions, cracks, and corrosion in the surface as a result of repeated abrasion and bending compression under high temperatures. FCAW(Flux Cored Arc Welding) is chosen as the welding method, due to its relatively simple handling method and favorable expenses and working time. As for welding wire, the method uses a type of continuous roll wire which makes auto-welding possible, and also has the possibility of a hardfacing which takes advantage of the mechanical properties of the welded metal according to the chemical reaction of the flux. The overlay welding teachnique for the repair of the guide roll of the caster machine described in this paper is sure to contribute to the improvement of the quality of steel products and productivity, as well as the reduction of repair expenses by overlay welding of guide rolls in the future.

Systematic Isotropy Analysis of Caster Wheeled Mobile Robot with Steering Link Offset Different from Wheel Radius

김성복 한국융합신호처리학회 2006 융합신호처리학회 논문지 (JISPS) Vol.15 No.1

This paper presents the systematic isotropy analysis of a fully actuated caster wheeled omnidirectional mobile robot (COMR) with the steering link offset different from the wheel radius, which can be considered as the generalization of the previous analysis. First, with the characteristic length introduced, the kinematic model of a COMR is obtained based on the orthogonal decomposition of the wheel velocities. Second, the necessary and sufficient conditions for the isotropy of a COMR are derived and examined to categorize three different groups, each of which can be dealt with in a similar way. Third, for each group, the isotropy conditions are further explored so as to identify four different sets of all possible isotropic configurations. Fourth, for each set, the expressions of the isotropic characteristic length required for the isotropy of a COMR are elaborated.

Realization of Steer-by-Wire System for Electric Vehicles using Caster Wheels and Independent Driving Motors

Yunha Kim,Hiroshi Fujimoto,Yoichi Hori 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5

Recently many works have been done on electric vehicle motion control. Most of them, however, still remain in the horizon of the conventional vehicle chassis structure, which is waste of ability. This paper presents a novel steer-by-wire system for electric vehicles using caster wheels and independent driving motors, which maximizes degrees of freedom in EV mobility and eventually distinguishes EVs from the ICEVs. A small-sized experimental vehicle is introduced and its basic dynamic characteristics are shown with actual experimental data. It is shown that the mobility of the vehicle can be improved by using caster wheels and independent driving motors at low speed, while it maintains stability at high speed. Feasibilities for future EV applications are shown with mathematical modeling and analyses, and control strategies are proposed in the paper.