Based on the socio-historical dynamics of English ideologies that percolated into Korean society, this paper explored the significant aspects of ESL ideology in the Korean context. Despite the generally accepted EFL context in Korea, the country is situated at the intersection between two categories: ESL from a perspective of English ideologies and EFL from a perspective of societal context. As a proto-ideology of English, ESL ideology, which dates back to the United States Military rule in Korea, was further theoretically developed by the Peabody/Korean team, and its implementation was attempted by the Peace Corps. Although activating ESL has failed in Korean society, its ideology per se remains unchanged, (re)generating other English ideologies including Spoken English First, Ten-year English Fiasco, and Earlier the Better English Education ideologies. This study found that the discrepancy between ESL as the ideological domain and EFL as the practical domain has brought about some confusion in English education policy and practices.

Recently the meaning of the road name address is expended as an information through the revision of the Road Name Address Act. As this revision, the address of things (AoT) become more important indicating the possibility for the expansion to the related business. However, recent study about AoT does not concern how the current priority system works from the first research. In this study, we analyze perception about addressable object between AoT experts and public using AHP analysis. We structured the importance of addressable objects as two categories; urgency and value creation. The necessity in emergency or daily, accessibility and welfare conform the urgency index. Meanwhile, public value creation in public domain or profitability in the business area and economics conform value creation index. We conducted survey for total of 89 of experts and public. The results of this study indicate the relative importance of AoT measured by experts and public. Generally, public tend to concern more about accessibility conforming the urgency index than experts. Moreover, the public WiFi and the sports complex scored the high priority among the remain addressable objects, in respect of the urgency and the value creation. This result could be implemented for the activation of the smart city industry base on the geospatial information including AoT.

목적 : 노안이 진행된 굴절이상안을 대상으로 노안보정용 안경 착용이 안구 굴절이상과 가입도 변화에 미치는 영향을 확인하고자 하였다. 방법 : 안과질환이 없고 백내장 수술 및 망막질환 경험과 노안교정용 안경을 착용한 경험이 없는 40~70세 사이의 중노년층 200명(400안, 1차 방문 시: 나이 51.56±5.82세, 등가구면굴절력 -0.62±1.66 D, 양안 원거리 교정시력 16/20)을 대상으로 희망하는 노안교정방법에 따라 누진다초점 안경, 근용 안경(단초점가입도 안경) 및 노안보정 안경 미착용(대조군) 그룹으로 분류하여 2년 후 굴절이상도와 근용 가입도 변화를 비교하였다. 결과 : 근시, 정시 및 원시안에서 모두 연령이 많을수록 원용 굴절이상도는 플러스(+) 굴절력 방향으로 증가하여 원시화의 경향을 보였으며(r=0.435, p<0.001), 가입도도 증가하였다(r=0.893, p<0.001). 연구에 참여하고 2 년 후 누진다초점 안경, 근용 안경 착용군과 미착용군의 원용 굴절이상도의 변화량은 각각 0.10±0.33, 0.15±0.17, 0.19±0.81 D로 누진다초점 안경을 착용한 군에서 변화가 가장 적었고(p<0.001), 근시군은 0.16±0.31, 0.20±0.18, 0.25±0.41 D, 원시군은 0.20±0.25, 0.25±0.19, 0.29±0.15 D, 정시군은 0.12±0.20, 0.14±0.17, 0.15±0.11 D로 세 그룹 모두 누진다초점 안경을 착용한 경우에 변화가 적었고, 원시 군에서 변화가 가장 많았으며, 정시군이 가장 적었다(all, p<0.001). 2년 후 가입도 변화량은 누진다초점 안경, 근용 안경 착용군과 대조군에서 각각 0.19±1.13, 0.24±0.15, 0.28±0.10 D로 누진다초점 안경 착용군에서 가입도 증가가 가장 적었고 대조군에서 가장 많았다(p<0.001). 결론 : 노안이 진행된 중노년층의 경우 나이가 들수록 원용 굴절이상도는 원시화로 진행되며, 근용 가입도는 증가하는데, 누진다초점 안경으로 노안을 교정할 경우에는 원시화와 가입도 증가를 지연시킬 수 있을 것으로 사료 된다.

Machines and facilities are physically or chemically degenerated by continuous usage. The representative type of the degeneration is the wearing of tools, which results in the process mean shift. According to the increasing wear level, non-conforming products cost and quality loss cost are increasing simultaneously. Therefore, a preventive maintenance is necessary at some point . The problem of determining the maintenance period (or wear limit) which minimizes the total cost is called the ‘process mean shift problem’. The total cost includes three items: maintenance cost (or adjustment cost), non-conforming cost due to the non-conforming products, and quality loss cost due to the difference between the process target value and the product characteristic value among the conforming products. In this study, we set the production volume as a decreasing function rather than a constant. Also we treat the process variance as a function to the increasing wear rather than a constant. To the quality loss function, we adopted the Cpm+, which is the left and right asymmetric process capability index based on the process target value. These can more reflect the production site. In this study, we presented a more extensive maintenance model compared to previous studies, by integrating the items mentioned above. The objective equation of this model is the total cost per unit wear. The determining variables are the wear limit and the initial process setting position that minimize the objective equation.

In recent years, various methods of measuring body temperature have been developed using wireless biosensors to facilitate an early detection of pregnancy and parturition in cows. However, there are no studies on real-time monitoring of cattle body temperature throughout pregnancy. Therefore, we investigated the daily mean ruminal temperature in pregnant cows throughout pregnancy using a ruminal bio-capsule sensor and then evaluated the temperature variation between pregnant and non-pregnant cows. In pregnant cows, the mean and standard deviation of ruminal temperature was 38.86 ± 0.17℃. Ruminal temperature in pregnant cows slowly decreased until 180 to 190 days after artificial insemination and after that, the temperature increased dramatically until just before parturition. Furthermore, the means ruminal temperature was significantly different between pregnant and nonpregnant cows. The mean and standard deviation of ruminal temperature were as follows: 38.68 ± 0.01℃ from days 80 to 100, 38.78 ± 0.02℃ from days 145 to 165, 38.99 ± 0.45℃ from days 200 to 220, 39.14 ± 0.38℃ from days 250 to 270 before parturition. Therefore, our results could provide useful data for early detection of pregnancy and parturition in Korean cows.

백색칼라(Zantedeschia aethiopica) 신품종 ‘Swan’은 국립원 예특작과학원에서 2017년에 육성하였다. ‘Swan’의 모본은 다화성인 ‘Childsiana’와 무름병에 강한 ‘Wedding March’를 부본으로 2004년에 교배하여 구근을 양성 후 2008년부터 2016년까지 생육 및 개화 특성, 균일성에 대하여 특성검정을 실시하였다. 2017년에 3차 특성검정을 실시하여 최종 선발한 후 직 무육성품종심의회에 상정하여 ‘Swan’으로 명명하였다. ‘Swan’ 의 생육 및 개화특성은 부본으로 사용된 ‘Wedding March’를 대조품종으로 조사하였다. 백색(RSH W155C)화색의 ‘Swan’ 은 화포의 길이와 폭이 각각 11.2cm와 10.3cm인 중형 품종이다. 주당 화수는 2.1개로 대조품종보다 2배 많으며 꽃대길이가 77.1cm로 대조품종(68.7cm)보다 길다. 개화소요일수는 65 일로 조기개화 품종이다. 절화수명은 17일(대조12일)로 길며, 무름병 중도저항성으로 구근증식량(13.3개/주)이 우수하고 소비자기호도가 높다. ‘Swan’ 품종은 2020년 4월 28일에 국립종 자원에 품종등록(등록번호 제8092호)되었다.

본 연구는 국내 자생하는 진달래속(Rhododendron) 종들의 종자 휴면유형 분류 및 발아특성 구명을 목표로 하였다. 진달래속 종들의 배는 형태적휴면(MD)이 없는 완전히 발달된 직선(linear) 형태였으며, 만병초 및 꼬리진달래 종자는 탈리 시점에 이미 휴면이 없는 것으로 밝혀졌다. 반면에 털진달래 종자는 population 수준에서 부분적으로 생리적휴면(PD)을 가지고 있는 것으로 나타났다. 털진달래의 이러한 생리적휴면 (PD)은 외생 지베렐린(GA3) 1,000mg･L-1 처리를 통해 타파될 수 있었다. 그러나 4℃에서의 저온층적처리는 털진달래 종자 휴면 타파에 효과가 없는 것으로 나타났다. 종합적으로 판단 했을 때, 진달래속(Rhododendron) 종들의 적정 발아 환경조 건은 광조건･25/15℃(만병초), 암조건･20/10℃(꼬리진달래), 광 조건･25/15℃(털진달래)로 확인된다. 진달래속(Rhododendron) 에서의 종간 차이(interspecific variation)로 인해 모든 종이 종자 휴면유형 또는 발아특성에서 구별이 되었다. 본 연구는 국내 자생하는 진달래속(Rhododendron) 종들의 생리･생태 특성을 이해하는 데 이용될 수 있을 것이다.

Under the stressed condition, a complex feedback mechanism for stress is activated to maintain homeostasis of the body and secretes several stress hormones. But these stress hormones impair synthesis and secretion of the reproductive hormones, followed by suppression of ovarian function. Cytochrome P450 1A2 (CYP1A2) plays a major role in metabolizing exogenous substances and endogenous hormones, and its expression is recently identified at not only the liver but also several organs with respect to the pancreas, lung and ovary. Although the expression of CYP1A2 can be also affected by several factors, understanding for the changed pattern of the ovarian CYP1A2 expression upon stress induction is still limited. Therefore, CYP1A2 expression in the ovaries from immobilization stress-induced rats were assessed in the present study. The stress-induced rats in the present study exhibited the physiological changes in terms of increased stress hormone level and decreased body weight gains. Under immunohistological observation, the ovarian CYP1A2 expression in both control and the stressed ovary was localized in the antral to pre-ovulatory follicles. However, its expression level was significantly (p < 0.01) higher in the stress-induced group than control group. In addition, stress-induced group presented more abundant CYP1A2-positive follicles (%) than control group. Since expression of the ovarian CYP1A2 was highly related with follicle atresia, increased expression of CYP1A2 in the stressed ovary might be associated with changes of the ovarian follicular dynamics due to stress induction. We hope that these findings have important implications in the fields of the reproductive biology.

본 연구에서는 중국 길림성 연변 주 지역의 ‘연변황우’ 소비자 대상으로 설문조사를 실시하였음. 먼저 국내외 브랜드 인지 및 구매 의사에 관한 이론을 검토하고 소비자의 브랜드 인식 등의 이론을 바탕으로 연구 가설을 제시하였음. ‘연변황우’에 대한 소비자 구매 의사에 영향을 미치는 요인을 구축하여 분석을 실시하였음. 연구 결과 1. ‘연변황우’ 브랜드 이미지는 소비자의 구매 의사에 긍정적인 영향을 미치며 소비자의 ‘품질 감지’ 요인에 정(+)의 영향을 미침. 2. ‘위험 감지’ 요인에는 부(-)의 영향을 미침. ‘품질 감지’ 요인은 ‘연변황우’ 구매 의사에 긍정적인 영향을 미침. 3. ‘연변황우’의 브랜드 이미지 관리를 강화해야하며 이는 브랜드의 연구관련에 새로운 분야 탐색에 중요한 의의가 있음.

In 2019, two court rulings in China on the issue of copyrightability of AI creations received international attention. It was reported that in Feilin v. Baidu, known as the first AI case, the Beijing Internet Court denied copyright of AI creations, whereas the Shenzhen Nanshan District People’s Court acknowledged copyright of AI creations in the Tencent Dreamwriter case. The two cases, however, were quite similar, as they acknowledged copyright of AIassisted, not AI-generated, written works and recognized these works as a work of a legal entity. The difference between the two judgments is that the Beijing Internet Court regarded originality as an independent requirement and judged it according to the objective standard, whereas the Shenzhen Nanshan District People’s Court regarded human creation as part of the requirement of originality. In this sense, it was the Beijing Internet Court that actually made the more favorable judgment on an AI-generated work.

The 2020 US Presidential election is now over. After listening to the essence of Mr. Biden’s inauguration speech, “America is Back!,” people around the world are cautiously expecting the revival of multilateralism. This research is to tackle a fundamental question of: “Is America Back to Multilateralism?,” by focusing on the US’s China trade policy under the Biden presidency. This essay consists of five parts including Introduction and Conclusion. Part two will review the development of postwar multilateralism which constructed the rulebased trade governance. Part three will analyze the challenge and crisis of contemporary multilateralism under former President Trump and the possibility of its resurrection under Biden administration. The author will review the origin and evolution of the US-China trade war. Part four will look into the possibility of reconstructing multilateral world for sustainable development. Part five will conclude the essay predicting the US’s China trade policy under the Biden administration.

The content of harmful materials was investigated for coffee beans sold in Daejeon. Total 79 samples were analysed and 213 residual pesticides and 2 heavy metals were analysed simultaneously by GC-MS/MS, GC-NPD, GC-ECD, LC-MS/MS and ICP-MS. The instrumental method was validated with limit of detection (LOD), limit of quantification (LOQ), the linearity of standard curves. LOD of the residual pesticides was between 0.0003 to 0.0021 mg/kg, LOQ of the residual pesticides was between 0.0008 to 0.0064 mg/kg. LOD of the heavy metals was between 0.0077 to 0.0079 μg/kg, LOQ of the heavy metals was between 0.0233 to 0.0239 μg/kg. The linearity correlation coefficient for the calibration curve was between 0.9929 to 0.9999 and the recovery rate was between 95.4% to 106.1%. According to the monitoring of residual pesticides and heavy metals, no pesticide was detected in all coffee bean samples. 88.6% (70 samples) of analysed total 79 coffee beans contained at least 1 heavy metal but there was no sample which exceeded the maximum residual limit. Risk assessment was also carried out based on the content of heavy metals detected in coffee beans. The carcinogenic risk assessment to heavy metals showed that all cancer-risk (CR) values were below 10–6 and it meant that the CR due to heavy metals intake was evaluated as safe. The non-carcinogenic risk assessment to heavy metals showed that all hazard index (HI) were below 1, which was considered acceptable at the current level of exposure. The %PTWI values of lead and cadmium for 55 roasted coffee bean samples were 0.09% and 0.04% respectively, compared with the reference values. This results indicate that there is almost no health risk from heavy metal intake through the consumption of coffee beans in circulation in Daejeon.

This study was undertaken to evaluate the toxic effect of cadmium sulfate (Cds) on planarians (Dugesia japonica), and the suitability of planarians as an alternative animal model for toxicity studies. Planarians were exposed to varying concentrations of experimental solutions containing 0.1–25 mg/L Cds, and incubated for 1, 3, and 5 hrs. Motility, seizure-like behaviors (c-like, head-bop, snake-like, and screw-like) and regeneration ability of the amputated fragment were subsequently evaluated. Results showed decreased motility with increasing concentrations of Cds (p<0.05), with the lowest motility being observed at the highest concentration of 25 mg/L Cds. Results also indicate that seizure-like behavior patterns were significantly affected by increments in the Cds concentrations, especially the c-like and head-bop behaviors were notably increased. Compared to the control, the regeneration ability of the planarians was decreased in the experimental solutions containing Cds. Planarians exposed to Cds showed either delayed eye formation or no eye regeneration during incubation. Moreover, increased concentrations of Cds resulted in failure to regenerate and death of the planarians. In conclusion, this study confirm that the heavy metal Cds exerts a toxic effect on planarians. Furthermore, the performances of the planarians in the experimental period exhibit their suitability as an alternative animal model for toxicity studies.

Precise combinations of probiotics can be useful in dog nutrition, treatment and care. Also, host specificity must be considered in order to increase the effectiveness of probiotics. In this study, Lactobacillus acidophilus HY7032 and Lactobacillus reuteri HY7506 were used, which were isolated from feces of healthy dogs through the verification of pH, bile salt tolerance, and antibacterial activity. In addition, the selected strains were confirmed for activity in immune cells. Briefly, L. acidophilus HY7032 and L. reuteri HY7506 enhanced oxidative burst and phagocytosis of innate immune cell activities in peripheral blood. In addition, beagle were administered vancomycin 50 mg and polymyxin B 100 KU for 7 days, and then 107 CFU of L. acidophilus HY7032 and L. reuteri HY7506 were orally administered for 3 weeks to confirm the effect of improving hair quality. Also, compared with the placebo group, the health improvement effect including stool pattern were confirmed. These results imply that the microflora imbalance caused by antibiotics can be gradually improved through the intake of probiotics. Through this study, it was confirmed that L. acidophilus HY7032 and L. reuteri HY7506 are good probiotics that contribute to the welfare and health of companion animals and have the effect of improving hair quality.

Rabies is a zoonotic disease that is caused by rabies virus and transmitted only in mammals. Domestic dogs are the most common reservoir of the virus, which is associated with more than 99% human deaths caused by dog-mediated rabies in the world. Rabies is one of the most fatal diseases, but it is fully preventable in animals by vaccination. Serological test of rabies virus antibody for samples collected from dogs and cats in Seoul during 2017–2019 was carried out in this study. To investigate antibody seroprevalence of rabies virus for dogs and cats, 2,769 serum samples were taken from 2,408 dogs and 361 cats in various regions of Seoul during 2017– 2019. Antibodies to rabies virus were detected by an indirect ELISA. Of 2,769 tested animal sera, 934 (33.7%) were positive; 886 (36.8%) of 2408 dogs and 48 (13.3%) of 361 cats. Of 990 companion animals, 547 (55.3%) was positive and 387 (21.8%) of 1779 stray animals was positive. These results indicate that antibody seroprevalence to rabies virus is still not enough to prevent rabies and rabies vaccination is required to enhance the antibody seroprevalence for rabies. To improve the situation, much public awareness and policy is needed to prevent the rabies. In addition, reducing stray animals and keeping companion animals from contact with wild animals are indispensable for the prevention of rabies.