• Proceedings of the Korean Institute of Landscape Architecture Conference
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• 2023.04a
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• pp.12-13
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• 2023

• The Journal of the Petrological Society of Korea
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• v.17 no.4
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• pp.222-230
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• 2008

Intruding ages for the Jurassic(${\sim}Triassic$) granites in South Korea can be reestablished as $210{\sim}170\;Ma$ and $180{\sim}160\;Ma$ according to the tectonic provinces of magma emplacement. Most Jurassic granites in the Gyeonggi massif have the intrusion ages of $180{\sim}160\;Ma$, indicative of middle Jurassic igneous activity. On the other hand the intrusion ages ($210{\sim}170\;Ma$) for the Jurassic granites in the Yeongnam massif represent late Triassic to middle Jurassic igneous activity. Using the concept of granite suite/supersuite, the Jurassic granites in South Korea can be hierarchically divided into two supersuites and two suites. Huge batholith of NE-SW direction in the Gyeonggi massif could be designated to be 'Gyeonggi Supersuite', which was originated from the mixture of igneous protolith and more evoloved crustal materials and formed in the post-orogenic environment after collision of the north China and south China blocks. There are one supersuite and two suites in the Yeongnam massif 'Yeongnam Supersuite' could be designated from the NE-SW trend batholith in the massif. This supersuite was originated from the mixture of igneous protolith and evolved crustal materials. Granitic rocks between Andong and Girncheon areas could be defined as 'Andong Suite'. This suite was originated from the mixture of depleted mantle and igneous protolith. The Daegang and Hamchang granties could be designated as 'Daegang Suite'. This suite was formed in the anorogenic environment which was different from the orogenic environment of the other supersuite/suite in the Yeongnam massif.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.01a
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• pp.429-431
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• 2023

본 연구에서는 아시아 주요국인 한국, 중국, 일본의 기업가정신으로 대표되는 기업가적 태도 중 지각된 능력(SUSKILL), 지각된 실패 두려움(FEARFAIL) 등의 요인이 어떤 차이가 있는지를 알아보고자 한다. 연구결과는 다음의 몇 가지로 요약된다. 첫째, SUSKILL의 수치를 봤을 때 한국은 높은 편에 속하였다. 그리고 FEARFAIL는 세 국가 중 가장 낮게 나타났다. 이는 한국의 기업가 정신 구축 환경이 잘 되어 있음을 나타낸다. 둘째, 중국은 대부분 지표에서 중간 정도의 수치를 나타내고 있었다. 셋째, 일본은 FEARFAIL는 세 국가 중 두 번째로 나타났으나 SUSKILL 등 지표에서 세 국가 중 가장 낮게 나타났다. 이러한 결과를 볼 때 일본의 경우 지속적인 성장을 위해서는 사회의 변화, 인식의 변화가 크게 일어나야 한다는 것을 시사한다. 본 연구는 국가별 기업가 정신과 기업가 태도를 비교함으로써 지속가능한 경영환경을 조성하는데 기여가 있다고 판단된다.

• Economic and Environmental Geology
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• v.31 no.3
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• pp.235-247
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• 1998

A new technique of simultaneons inversion for 3-D seismic velocity structure by using direct, reflected, and refracted waves is applied to the center of the Korean Peninsula including Pyongnam Basin, Kyonggi Massif, Okchon Fold Zone, Taebaeksan Fold Zone, Ryongnam Massif and Kyongsang Basin. Pg, Sg, PmP, SmS, Pn, and Sn arrival times of 32 events with 404 seismic rays are inverted for locations and crustal structure. 5 ($1^{\circ}$ along the latitude)${\times}6$ ($0.5^{\circ}$ along the longitude) ${\times}8$ block (4 km each layer) model was inverted. 3-D seismic crustal velocity tomography including eight sections from the surface to the Moho, eight profiles along latitude and longitude and the Moho depth distribution was determined. The results are as follows: (1) the average velocity and thickness of sediment are 5.15 km/sec and 3-4 km, and the velocity of basement is 6.12 km/sec. (2) the velocities fluctuate strongly in the upper crust, and the velocity distribution of the lower crust under Conrad appears basically horizontal. (3) the average depth of Moho is 29.8 km and velocity is 7.97 km/sec. (4) from the sedimentary depth and velocity, basement thickness and velocity, form of the upper crust, the Moho depth and form of the remarkable crustal velocity differences among Pyongnam Basin, Kyonggi Massif, Okchon Zone, Ryongnam Massif and Kyongsang Basin can be found. (5) The different crustal features of ocean and continent crust are obvious. (6) Some deep index of the Chugaryong Rift Zone can be located from the cross section profiles. (7) We note that there are big anisotropy bodies near north of Seoul and Hongsung in the upper crust, implying that they may be related to the Chugaryong Rift Zone and deep fault systems.

• Journal of Global Scholars of Marketing Science
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• v.12
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• pp.135-154
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• 2003

This study having purpose of promoting the convenience of medical service customer at medical service encounter have tried to know the influence of physical environment, perceived justice, and perceived waiting time to the intention of re-use of medical service through mediating variable such as service Quality evaluation and negative emotion. Particularly, this exploratory study have first tried to know what influence the physical environment and perceived justice have on negative emotion. Findings are; First, the physical environment affect positive influence to service Quality evaluation, and lower the negative emotion. Second, perceived justice have no influence to the service Quality evaluation and negative emotion. Third, the perceived waiting time lower the service Quality and increase the negative emotion. Fourth, the service Quality have positive influence to intention of re-use of medical service. However, the negative emotion have no influence to the intention of re-use of medical service. Therefore physical environment of medical service becomes more important and it is necessary to shorten the waiting time. In addition, even though negative emotion have no influence to the intention of re-use of medical service it is necessary to make the smallest of negative emotion. Because it is possible to separate once switching barner due to the medical service specificity is solved.

• Journal of Global Scholars of Marketing Science
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• v.17 no.1
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• pp.101-122
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• 2007

Recently, as internet shopping mall users rapidly, a form of shopping changed from off line to on line. The rapid growth of customers and transaction volume through evolution of new media, internet, brings new problems to internet marketers. It is the most important task that how internet shopping mall operators obtain their customers trust and repeat buying. This empirical research investigates online shoppers for their trust dimensions for online retailers. The study aimed to determine whether e-trust antecedents(perceived reputation, perceived quality, perceived value) influence trust dimension and whether the multidimensional trust contributed differently to perceived risk and willingness to depend on e-retailers. Consequences of the research are as follows: First, it reveals that of reputation, web site quality of the internet shopping mall have influence upon trust dimension. Second, the higher level of trust consumers have, the higher level of willingness to depend and intent to revisit on the retailers they have. But level of perceive risk consumers have not influences on willingness to depend on the retailers. It is necessary for internet shopping mall to development its reputation and familiarity to obtain customer's trust. Accordingly, this research will be helping internet shopping mall insight for marketing strategies, constantly should study about action and mind of consumer.

• Geophysics and Geophysical Exploration
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• v.6 no.1
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• pp.40-52
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• 2003

Despite the various opening models of the southwestern part of the East Sea (Japan Sea) between the Korean Peninsula and the Japan Arc, the continental margin of the Korean Peninsula remains unknown in crustal structure. As a result, continental rifting and subsequent seafloor spreading processes to explain the opening of the East Sea have not been adequately addressed. We investigated crustal and sedimentary velocity structures across the Korean margin into the adjacent Ulleung Basin from multichannel seismic reflection and ocean bottom seismometer data. The Ulleung Basin shows crustal velocity structure typical of oceanic although its crustal thickness of about 10 km is greater than normal. The continental margin documents rapid transition from continental to oceanic crust, exhibiting a remarkable decrease in crustal thickness accompanied by shallowing of Moho over a distance of about 50 km. The crustal model of the margin is characterized by a high-velocity (up to 7.4 km/s) lower crustal (HVLC) layer that is thicker than 10 km under the slope base and pinches out seawards. The HVLC layer is interpreted as magmatic underplating emplaced during continental rifting In response to high upper mantle temperature. The acoustic basement of the slope base shows an igneous stratigraphy developed by massive volcanic eruption. These features suggest that the evolution of the Korean margin can be explained by the processes occurring at volcanic rifted margins. Global earthquake tomography supports our interpretation by defining the abnormally hot upper mantle across the Korean margin and in the Ulleung Basin.

• The Journal of the Korea Contents Association
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• v.21 no.10
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• pp.204-216
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• 2021

This study empirically analyzed factors affecting consumers' intention to use metaverse by applying the extended technology acceptance model. In other words, the factors affecting the intention to use the metaverse were set as content quality, perceived enjoyment, social influence, self-efficacy, and investigated from the perspective of the expanded technology acceptance model. For this end, a survey was conducted on 296 university students in Seoul, and the collected data from 267 students were analyzed using SPSS 25.0 and AMOS 23.0. As a result, it was found that perceived usefulness and perceived ease of use, which are the antecedent variables of the extended technology acceptance model, affect the intention to use the metaverse, and perceived ease of use has an effect on perceived usefulness. Content quality and perceived enjoyment had an effect on perceived usefulness, perceived ease of use and intention to use metaverse. Social influence was found to affect perceived usefulness and intention to use metaverse. Also, self-efficacy was found to affect perceived ease of use and intention to use metaverse.

• Korean Journal of Cognitive Science
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• v.34 no.1
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• pp.39-66
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• 2023

New media moved the place of social exchange to the Internet, allowing large groups to communicate in one place beyond the limits of time and space. Recent studies have also reported cases in which human social abilities do not keep up with the expansion of group scale through social media. In this context, current study investigated how human perception of social information is affected by the expansion of the group scale in the context of majority bias. Using Internet-based task, the psychological processes that group ratio and group size are perceived and affect majority-biased social information use were investigated, and whether group scale moderates those processes was examined. The group ratio has a positive effect on the majority bias, and the relationship was partially mediated by ratio perception. Group scale did not moderate the relationship between group ratio and ratio perception. On the other hand, the correlation between group size and majority-biased social information use was not significant. Group scale moderates group size perception. The group size and size perception showed positive correlation under the smaller group scale condition. However under the extended group scale condition, the perceived group size became significantly lower and lost its correlation with group size. These results provide evidence that the psychological mechanism related to group size perception was not properly responding to the expansion of the group scale. Furthermore, the possibility of a specific psychological mechanism for processing group size information and the form of information input specifically accepted by majority bias were discussed from perspective of evolutionary psychology.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2003.05a
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• pp.111-114
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• 2003

산소는 인간의 신체 및 정신 활동에 필수적인 물질이며, 특히 뇌 기능에 중요한 역할을 수행한다. 본 연구에서는 일반 공기 중의 산소 농도(21%) 환경에 비해 외부에서 고 농도(30%)의 산소 공급이 인지 능력 중 특히 공간 지각 능력에 어떠한 변화를 유발하는지 관찰하고자 한다. 8명의 남자 대학생(평균 23.5세)을 본 연구의 실험 참여자로 선정하였다. 21%와 30% 산소 농도를 각각 8L/min의 양으로 일정하게 공급할 수 있는 장치를 개발하여, 마스크를 통하여 실험 참여자에게 전달하였다. 공간 지각 능력 측정으로 위해 각각 20문항을 포함하는 두 개의 문제지를 제작하였고, 과제 수행 결과로부터 정답률과 평균 반응 시간을 산출하였다. 평균 정답률은 21%와 30% 산소 농도에서 각각 50.63 $\pm$ 8.63과 62.50 $\pm$ 9.64 이었고, 두 농도간의 통계적 유의차가 발생하였다. 평균 반응 시간의 21%와 30% 산소 농도에서 각각 6.60 $\pm$ 0.77〔sec〕이었고, 두 농도간의 통계적 유의차가 발생하지 않았다. 본 연구 결과로부터 외부에서의 고농도의 산소 공급이 공간 지각 능력 증가에 긍정적인 영향을 미친다는 결론을 도출할 수 있다.