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일본 대학에서 비전공 한국어 과목 수강자의 수강 동기에 대한 현황과 추이
박종후 ( Park Jonghoo ),정선영 ( Jung Sunyoung ) 연세대학교 언어연구교육원 한국어학당 2019 외국어로서의 한국어교육 Vol.55 No.-
The aim of this study is to investigate the motivation of learning the Korean language for Japanese university students who do not major in Korean. In the analysis, we compared different types of motivation for the participants classified with two different variables: gender and presence of former experience in Korea-related fields. In addition, we compared this study with the 2014 survey to examine if there were any longitudinal differences. We conducted a survey with 552 students in twelve different regions in Japan. We found that most of the students who were enrolled in a non-major Korean language course had an internal motivation. Not many students, both male and female, were taking the Korean language class for a practical reason. This study also showed that those students who previously visited Korea were taking the language class with an internal motivation. Former experience in making Korean friends or learning the language did not seem to play an important role to form students’ motivation to take the Korean language class. As we compare the results of the current study and the 2014 study, it is noteworthy that external motivation has decreased and internal motivation has increased in contrast. Namely, internal motivation has become more crucial over time. The findings of this study will contribute to recalibrating the purpose of Korean language education as an elective subject in Japanese universities. (Dokkyo University · Former Yonsei KLI)
박종후(Park, Jonghoo),하지경(Ha, Jikyung) 한국사전학회 2012 한국사전학 Vol.- No.20
This research aims to build practical and useful models of dictionary to help foreign learners learning Korean foreign words. Foreign words go through a morphological, syntactic, and pragmatic change when incorporated into the Korean vocabulary system. If the information is provided inaccurately, then the words will not be fully understood and used. Foreign words dictionary is needed in order to provide accurate meaning of original words to the learners. First, research investigated Korean foreign words dictionary’s problems in selection and arrangement of headwords in terms of the macro-structure. Then, we considered how to present detailed explanation, meaning, phonology, grammar, and pragmatic information of headwords in terms of microstructure. Therefore, the research recommends selecting frequently used foreign words as headwords and present appropriate examples to fill out the information gap from the changes in semantic and syntactic areas. This approach will improve learner’s ability to understand and express Korean foreign words.
Free-standing 박막의 전계 방출 특성을 이용한 고에너지 이온 디텍터에 관한 연구
박종후(Jonghoo Park) 한국자기학회 2011 韓國磁氣學會誌 Vol.21 No.5
We describe modified Fowler-Nordheim (FN) field emission equation for the free-standing nanomembrane cathode, which has mechanical degrees of freedom. The derived FN equation agrees well with the experimental data. The free-standing nanomambrane cathode demonstrates its unique ability to detect large biomolecure ions.
Lee Jonghoo,Park Hye Kyeong,Kwon Min-Jung,Ham Soo-Youn,Gil Hyun-Il,Lim Si-Young,Song Jae-Uk 대한의학회 2024 Journal of Korean medical science Vol.39 No.6
Background: Lung dysfunction and high apolipoprotein B/apolipoprotein A-I (apoB/apoA-I) ratio are both recognized risk factors for cardiovascular disease. However, few studies have examined the association between the apoB/ApoA-I ratio and lung function. Therefore, we investigated whether this ratio is associated with decreased lung function in a large healthy cohort. Methods: We performed a cohort study on 68,418 healthy Koreans (34,797 males, mean age: 38.1 years) who underwent a health examination in 2019. ApoB/apoA-I ratio was categorized into quartiles. Spirometric values at the fifth percentile in our population were considered the lower limit of normal (LLN), which was used to define lung function impairment. Adjusted odds ratios (aORs) and 95% confidence intervals (CIs), using the lowest quartile as the reference, were estimated to determine lung function impairment. Results: Mean apoB/apoA-I ratio was 0.67 ± 0.21. Subjects with the highest quartile of this ratio had the lowest predicted forced expiratory volume in one second (FEV1%) and forced vital capacity (FVC%) after controlling for covariates (P < 0.001). However, FEV1/FVC ratio was not significantly different among the four quartiles (P = 0.059). Compared with the lowest quartile (Q1, reference), the aORs (95% CI) for FEV1% < LLN across increasing quartiles (from Q2 to Q4) were 1.216 (1.094–1.351), 1.293 (1.156–1.448), and 1.481 (1.311– 1.672) (P for trend < 0.001), respectively. Similarly, the aORs for FVC% < LLN compared with the reference were 1.212 (1.090–1.348), 1.283 (1.147–1.436), and 1.502 (1.331–1.695) with increasing quartiles (P for trend < 0.001). However, the aORs for FEV1/FVC < LLN were not significantly different among groups (P for trend = 0.273). Conclusion: High apoB/apoA-I ratio was associated with decreased lung function. However, longitudinal follow-up studies are required to validate our findings.
Joung, DaeHwa,Park, Hyeji,Mun, Jihun,Park, Jonghoo,Kang, Sang-Woo,Kim, TaeWan The Korean Vacuum Society 2017 Applied Science and Convergence Technology Vol.26 No.5
The two-dimensional layered $MoS_2$ has high mobility and excellent optical properties, and there has been much research on the methods for using this for next generation electronics. $MoS_2$ is similar to graphene in that there is comparatively weak bonding through Van der Waals covalent bonding in the substrate-$MoS_2$ and $MoS_2-MoS_2$ heteromaterial as well in the layer-by-layer structure. So, on the monatomic level, $MoS_2$ can easily be exfoliated physically or chemically. During the $MoS_2$ field-effect transistor fabrication process of photolithography, when using water, the water infiltrates into the substrate-$MoS_2$ gap, and leads to the problem of a rapid decline in the material's yield. To solve this problem, an epoxy-based, as opposed to a water-based photoresist, was used in the photolithography process. In this research, a hydrophobic $MoS_2$ field effect transistor (FET) was fabricated on a hydrophilic $SiO_2$ substrate via chemical vapor deposition CVD. To solve the problem of $MoS_2$ exfoliation that occurs in water-based photolithography, a PPMA sacrificial layer and SU-8 2002 were used, and a $MoS_2$ film FET was successfully created. To minimize Ohmic contact resistance, rapid thermal annealing was used, and then electronic properties were measured.
Mohammad Awwal Adeshina,Jonghoo Park,마레디바라쓰쿠마르,강대경,Bongjun Choi 한국센서학회 2019 센서학회지 Vol.28 No.6
Liquid crystal (LC) mesophase materials manifest a variety of phase transitions. The optical properties of LCs are highly dependent upon the phase and orientation of the optical axis with respect to the polarization of incoming light. Studying the LC phase transitions is significantly important for a wide range of scientific and industrial applications. In this study, we demonstrate the propagation velocity of the phase boundary between the nematic and isotropic phase of 4-Cyano-4-pentylbiphenyl (5CB) liquid crystal for different electric fields using a polarized optical microscope. The results demonstrate that the propagation velocity of the phase boundary exhibits a peak value for a specific voltage, attributed to the supercooling of the isotropic phase of the LC. The analysis of the propagation velocity for different electric fields also provides a simple optical platform to measure the thermal anisotropy and voltage dependent thermal properties of the homogeneously aligned LC
DaeHwa Joung,Hyeji Park,Jihun Mun,Jonghoo Park,Sang-Woo Kang,TaeWan Kim 한국진공학회(ASCT) 2017 Applied Science and Convergence Technology Vol.26 No.5
The two-dimensional layered MoS2 has high mobility and excellent optical properties, and there has been much research on the methods for using this for next generation electronics. MoS2 is similar to graphene in that there is comparatively weak bonding through Van der Waals covalent bonding in the substrate-MoS2 and MoS2-MoS2 heteromaterial as well in the layer-by-layer structure. So, on the monatomic level, MoS2 can easily be exfoliated physically or chemically. During the MoS2 field-effect transistor fabrication process of photolithography, when using water, the water infiltrates into the substrate-MoS2 gap, and leads to the problem of a rapid decline in the material’s yield. To solve this problem, an epoxy-based, as opposed to a water-based photoresist, was used in the photolithography process. In this research, a hydrophobic MoS2 field effect transistor (FET) was fabricated on a hydrophilic SiO2 substrate via chemical vapor deposition CVD. To solve the problem of MoS2 exfoliation that occurs in water-based photolithography, a PPMA sacrificial layer and SU-8 2002 were used, and a MoS2 film FET was successfully created. To minimize Ohmic contact resistance, rapid thermal annealing was used, and then electronic properties were measured.
Jae-Uk Song,Jonghoo Lee,Hye Kyeong Park,Gee Young Suh,Kyeongman Jeon 대한의학회 2020 Journal of Korean medical science Vol.35 No.1
Background: There has been no consensus regarding the discontinuation order of vasopressors in patients recovering from septic shock treated with concomitant norepinephrine (NE) and arginine vasopressin (AVP). The aim of this study was to compare the incidence of hypotension within 24 hours based on whether NE or AVP was discontinued first in order to determine the optimal sequence for discontinuation of vasopressors. Methods: A systematic literature search was conducted in MEDLINE, Embase, and the Cochrane Central Register. The primary end-point was incidence of hypotension within 24 hours after discontinuation of the first vasopressor. Results: We identified five studies comprising 930 patients, of whom 631 (67.8%) discontinued NE first and 299 (32.2%) discontinued AVP first. In pooled estimates, a random- effect model showed that discontinuation of NE first was associated with a significant reduction of the incidence of hypotension compared to discontinuing AVP first (31.8% vs. 54.8%; risk ratios, 0.35; 95% confidence interval, 0.16 to 0.76; P = 0.008; I 2 = 90.7%). Although a substantial degree of heterogeneity existed among the trials, we could not identify the significant source of bias. In addition, there were no significant differences in intensive care unit (ICU) mortality, in-hospital mortality, 28-day mortality, or ICU length of stay between the groups. Conclusion: Discontinuing NE prior to AVP was associated with a lower incidence of hypotension in patients recovering from septic shock. However, our results should be interpreted with caution, due to the considerable between-study heterogeneity.