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차량 내 디스플레이 위치에 따른 정보 및 기능에 대한 국가별 선호도 비교 연구
김영상 ( Kim¸ Youngsang ),유훈식 ( Yoo¸ Hoonsik ) 디자인융복합학회(구.한국인포디자인학회) 2021 디자인융복합연구 Vol.20 No.5
본 연구는 5개 국가 총 823명의 응답자(한국 160명, 미국 161명, 중국 164명, 러시아 167명, 브라질 171명)를 대상으로 5개 디스플레이(헤드업, 클러스터, 센터페시아, 보조석, 뒷좌석) 각각에 설치되길 원하는 4가지 기능(차량 주행 정보, 안전 정보, 편의 기능, 인공지능 비서)별 선호도를 비교 분석했다. 분석 결과에 따르면, 응답자들은 차량 주행 정보 및 안전 정보의 경우 헤드업이나 클러스터 디스플레이에서 표시되는 것을 선호하는 것으로 나타났다. 특히, 기술 수용도가 상대적으로 높은 중국과 브라질 응답자들은 이들 정보가 헤드업 디스플레이에 설치되는 것을 선호하는 반면 기술 수용도가 낮은 한국, 미국, 러시아는 클러스터 디스플레이를 선호하는 편이었다. 또한, 편의 기능 및 인공지능 비서 기능의 경우에는 센터페시아, 보조석, 뒷좌석이 설치되기에 적합하다는 응답이 많았으며 안전에 대한 인식이 비교적 관대한 중국 응답자들은 헤드업과 클러스터 디스플레이를 더 선호했다. This study analyzes a total of 823 respondents from 5 countries(Korea, USA, China, Brazil, and Russia)’s preference for 5 displays(head-up, cluster, center fascia, passenger seat, rear seat) assuming that each display had 4 functions(vehicle driving information, safety information, convenience functions, and artificial intelligence assistant). According to the results, respondents preferred that vehicle driving information and safety information be installed on the heads-up or cluster display. In particular, respondents from China and Brazil, which have relatively high technology acceptance, prefer that this information is installed on head-up displays, while Korea, the United States, and Russia, which have low technology acceptance, prefer cluster displays. In addition, in the case of convenience functions and artificial intelligence assistant functions, respondents from five countries answered that the center fascia, passenger seat, and rear seat were suitable for installation. In particular, Chinese respondents, who are relatively generous with their safety awareness, preferred the head-up and cluster display more.
Youngsang CHUN,Hyeong Ryeol KIM,Kyung Rae KIM,Eun Jeong KIM,Hah Young YOO,Ja Hyun LEE,Chulhwan PARK,Seung Wook KIM 한국생물공학회 2021 한국생물공학회 학술대회 Vol.2021 No.10
Lipase is well-known as a biocatalyst for the green process to produce biodiesel in charge of a sustainable environment. Enzyme immobilization is a strategy focusing on the application of continuous cycles in the enzymatic process system. In this study, an economical and simple immobilization technique was designed for repeated use of enzymes while stably maintaining enzyme activity through enzyme-metal-phosphate encapsulation. First, the evaluation of lipase activity on metal ions was carried out to determine the substance for encapsulation. As a result, the lipase activity showed the highest in Tris-HCl buffer containing copper ion. In particular, the self-assembled lipase-copper-phosphate (SALCP) in phosphate-buffered saline showed a highly porous and robust inorganic surface by SEM. Immobilized lipase through SALCP showed improved enzyme stability over a wide broad of pH and operating temperatures compared to free lipase. In addition, SALCP succeeded in maintaining more than 80% of lipase activity under the biodiesel conversion process for 10 cycles.
A Conceptual Model of Korean University EFL Learners’ Writing Performance
Youngsang Kim 경희대학교 언어정보연구소 2010 언어연구 Vol.27 No.3
This paper explored Korean university EFL students' writing performance and its model, using a qualitative research method. Several categories or themes emerged from in-depth interviews with current research respondents, which were perceived to impact students' EFL writing performance both inside and outside the university classroom. That is, results derived from the analysis of the data encompassed the following categories: (1) EFL learners' cognitive or metacognitive capacity; (2) EFL learners' overall English proficiency; (3) free voluntary reading in English; (4) free voluntary writing in English; and (5) EFL learners' writing apprehension and attitudes towards writing in English. Grounded in the categories above, a conceptual model of Korean university EFL learners' writing performance was eventually offered which could shed light on key components as perceived to have a bearing on writing performance in which Korean university EFL learners might engage themselves.
The English Only Movement and Its Ideology in the U.S.
( Youngsang Kim ) 대한영어영문학회 2004 영어영문학연구 Vol.30 No.3
A drastic increase in the number of ethnically and linguistically diverse immigrants has become the target of a heated controversy surrounding the exclusive use of the English language in the States. This paper examines the ideology relative to the English Only movement that has existed as a result of a pro-English initiative. The claims professed by the two major organizations devoted to passing English Only legislation, U.S. English and English First, are encapsulated, along with opposing views explored in this initiative. In American society which is traditionally characterized by pluralism, which tends to favor ideas such as multilingualism and multiculturalism, the concerns expressed by opponents have proven to stem from the recognition that the English Only movement and the resultant legislation passage would not necessarily function as an integrating force for the nation, and that English Only policies are most likely to serve a gatekeeping function that bars language minorities from access to political, social, and educational arenas. < Kyungnam University >
Soil stabilization by ground bottom ash and red mud
Kim, Youngsang,Dang, My Quoc,Do, Tan Manh,Lee, Joon Kyu Techno-Press 2018 Geomechanics & engineering Vol.16 No.1
This paper presents results of a compressive investigation conducted on weathered soil stabilized with ground bottom ash (GBA) and red mud (RM). The effects of water/binder ratio, RM/GBA ratio, chemical activator (NaOH and $Na_2SiO_3$) and curing time on unconfined compressive strength of stabilized soils were examined. The results show that the water/binder ratio of 1.2 is optimum ratio at which the stabilized soils have the maximum compressive strength. For 28 days of curing, the compressive strength of soils stabilized with alkali-activated GBA and RM varies between 1.5 MPa and 4.1 MPa. The addition of GBA, RM and chemical activators enhanced strength development and the rate of strength improvement was more significant at the later age than at the early age. The potential environmental impacts of stabilized soils were also assessed. The chemical property changes of leachate from stabilized soils were analyzed in terms of pH and concentrations of hazardous elements. The observation revealed that the soil mixture with ground bottom ash and red mud proved environmentally safe.
Students' Affective Reactions to Demonstrating Communicative Competence in EFL Classrooms
Youngsang Kim 한국언어과학회 2014 언어과학 Vol.21 No.2
The present research investigated university students' affective reactions to communicatively oriented classroom tasks when they were required to engage themselves in classroom learning activities and demonstrate communicative competence in English. To gain some insight into students' affective reactions to communication in English, the researcher conducted interviews with the respective EFL respondents. Three main themes that transpired from data collected were found to have negatively affected students' engagements in communication-based classroom tasks: (1) lacking self-confidence; (2) saving face through reticence; and (3) feeling apprehensive about speaking and writing. Based on the findings, some instructional suggestions pertaining to treatment interventions were finally addressed. (Kyungnam University)
Kim,Youngsang,Do, Tanmanh,Jung, Shinhyun 대한토목학회 2013 대한토목학회 학술대회 Vol.2013 No.10
A study was conducted to investigate the load transfer mechanism of ground anchors through a series of field experiments and numerical modeling. Optical FBG sensors, embedded into the center king cable of a 7-wire strand, were applied to the different ground conditions to monitor the distribution of tensile force along the tendons. The observed measurements of the in-situ load tests were compared with equivalent case studies simulated in the finite difference method, Flac 3D program. There is a good agreement between the experimental and numerical results. Both of them indicated that the tensile force remains constant at the free anchor length before dropping to zero at the distal end of the bonded anchor length. In addition, it is worth noting that the load transfer depth is different, short in hard rocks and longer in weak rocks depending on the ground conditions. This finding is particularly important when designing anchor and satisfying implicit economic criteria.