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        검색결과 873

        105.
        2022.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        수십 년간의 세계화에도 불구하고, 기업들은 여전히 국내와 해외 시장에서의 마케팅 환경의 불일 치로 어려움을 겪고 있다. 기업들은 이러한 환경의 차이를 극복하기 위해 각 시장의 특성을 고려한 광고 어필(advertising appeal)을 이용하여 특정 메시지를 전달한다. 이에 따라 기업의 국내와 해외 시장에서의 광고 어필 사용의 차이가 존재하는데, 그 차이를 찾기 위해 본 연구는 한국과 말 레이시아에서 한국브랜드가 어떤 광고 어필을 활용하는지 살펴보려고 한다. 이번 연구는 유튜브 동 영상의 콘텐츠 분석을 통해 한국과 말레이시아 시장 간 광고 어필 사용의 차이를 도출하였다. 본 논문은 말레이시아 시장에서의 마케팅 커뮤니케이션 전략을 계획할 때 국내 마케팅 매니저들이 고 려할 수 있는 실질적인 시사점을 제시한다.
        6,000원
        106.
        2022.05 구독 인증기관·개인회원 무료
        To rationalize the protection of spent nuclear fuel transport storage cask, we intend to investigate the status of domestic and foreign safety regulations and related technologies to develop sabotage scenarios and analyze the protection performance and radiation impact of transport storage cask. It is essential to conduct an aircraft collision safety evaluation on spent nuclear fuel transportation and storage casks in Korea due to changes in laws and regulations related to nuclear power plant design and demand for enhanced safety. Domestic and foreign research on the protection performance of spent nuclear fuel transport storage cask was based on 9.11 events, and the results of all studies show that the speed of the aircraft and leakage of nuclear materials are insignificant. The Sandia National Laboratory (SNL) calculates Aerosol emissions from spent fuel damage in the event of sabotage and calculates Source Term based on the Durbin-Luna model. In this paper, radiation sensitivity analysis was performed due to damage to the carrier according to the size of the accident, assuming that there was a hole enough to basket from the external shell among the collision scenarios identified for domestic cask models.
        107.
        2022.05 구독 인증기관·개인회원 무료
        During the treatment of spent nuclear fuel, radioactive iodine is generated in a liquefied or gaseous form in a specific process. In the case of iodine 129, it is a long-lived nuclide with a very long halflife and has high groundwater mobility under repository conditions. Despite showing a low radioactivity value, research on the management of radioactive iodine from a long-term perspective is continuously being performed. Although research has been conducted using borosilicate glass as a medium for solidifying iodine, compatibility of I in borosilicate glass is very small and the volatility is high in the solidification process. So it is not suitable as a solidified substance of iodine. Therefore, studies on other solidification media to replace them are continuously being conducted. Our research team tried to develop a new medium that can contain iodine in a solidified body stably through a simple heat treatment process and can improve problems such as volatility and waste loading. Iodine is captured as AgI in the Ag ion-exchanged zeolite. So, TeO2, Ag2O, and Bi2O3 having a high AgI loading rate were used as main components. It was named TAB after taking the first letter of each element. In previous studies, the physical properties, structure, and chemical stability of TAB materials were confirmed. PCT (Product Consistent test) was performed to confirm chemical stability. It is mainly used to compare the chemical stability of glass materials with other glass materials, but there are limitations in evaluating the long-term chemical stability of materials. In this experiment, we tried to evaluate the long-term stability of TAB and compare it with borosilicate, which is conventionally used to treat radioactive waste. In addition, we tried to understand the leaching behavior inside the TAB medium. For this purpose, ASTM C1308 test was performed for 365 days, and distilled water and KURT groundwater were used as leachates to examine the effect of ions in the groundwater on the solidified body. To analyze the leaching behavior, ICP-MS and ICP-OES analyses were performed, and the cross-section of the sample after leaching was observed through SEM.
        108.
        2022.05 구독 인증기관·개인회원 무료
        Various models have been proposed to describe the swelling behavior of buffer in high level waster repository. One of the most notable models, the Barcelona Basic Model (BBM), is a mechanical model that simulates the behavior of unsaturated ground and is widely applied to soils that undergo large expansion due to water. Among the BBM parameters of Kyeongju bentonite, which is found in Korea, there are no experimental data for parameters that describe the unsaturated state. Such hydromechanical properties should be characterized through experimental programs. However, such experiments are highly complicated and require long periods of time to produce an unsaturated state through different methods according to the suction range. Although there are several studies in which geotechnical parameters were obtained through a back analysis instead of direct experiments, few studies have employed machine learning methods for the identification of geotechnical parameters. In this study, instead of direct experiments, the results of a relatively simple swelling pressure experiment was compared to the numerical analysis results to propose a method of determining some of BBM parameters. Influential factors were identified by a sensitivity analysis and the values of the factors were estimated using an artificial neural network and optimization method. The obtained parameters were applied to the numerical model to estimate the swelling pressure growth, which was subsequently compared to the experimental value. As a result, it was found that there was no significant difference between the two swelling values.
        109.
        2022.05 구독 인증기관·개인회원 무료
        FTIR (Fourier Transform Infrared) and Raman spectra of KJ-II bentonite provided by Clariant Korea were compared with those of MX-80 bentonite. The FTIR spectra were obtained using a Nicolet 5 FTIR spectrometer (Fisher Scientific) equipped with a diamond ATR (Attenuated Total Reflection) module. The spectra were collected for 64 scans with a resolution of 4 cm−1. Raman spectra were obtained using an optical microscope (Olympus, BX43) and a spectrometer (Andor, SR- 500). The laser beam was focused using an objective lens with a magnifying power of 50. The backscattered light from the sample was collected into an optical fiber with a core diameter of 0.4 mm. The Raman signals were recorded with CCDs (Andor, DV401A-BV for 532 nm laser wavelength and DV420A-OE for 638 and 785 nm laser wavelengths). Each pixel of CCD received the signal for 1 s and its 1000 times accumulated data were collected. The FTIR spectra of the two bentonite samples are very similar. The FTIR spectra of both bentonites showed absorption bands at 3623, 3399, 3231 cm−1 in the higher wavenumber region and at 1637, 1443, 1117, 997, 914, 887, 847, 797, 611, 515, 414 cm−1 in the lower wavenumber region. A sharp band at 3623 cm−1 and the strong band at 997 cm−1 correspond to the OH stretching of structural hydroxyl groups and the Si-O stretching vibration, respectively. In addition to these clear bands, several absorption bands observed in this experiment are well matched with the results reported in various literatures. Unlike the FTIR spectrum, it is not easy to observe the Raman bands of bentonite. The reason is that strong fluorescence interferes with the Raman spectrum. The two bentonite samples showed different fluorescence intensities. In the case of MX-80 bentonite, no clear Raman band was observed due to the influence of very strong fluorescence. KJ-II bentonite showed a relatively weak fluorescence intensity and Raman bands were partially visible at around 147, 260, 397, 709, and 1279 cm−1. In particular, the band at 1279 cm−1 is wide and sturdy. It was observed that the non-powder samples showed a better quality spectra. The Raman characteristics of KJ-II bentonite, which depend on the incident laser wavelength and the sample pretreatment, are discussed in detail.
        111.
        2022.05 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The WHO reported the Covid-19 outbreak infected 486,761,597 people, involving 6,142,735 deaths worldwide as of 1 April 2022. This contagious disease has spread rapidly throughout the world, including Malaysia. Since the outbreak in Malaysia began in March 2020, the Movement Control Order (MCO) has been implemented nationwide, leaving a significant impact on its citizens, non-citizens, as well as refugees. There is some exploitation of refugees, where enforcement officers are targeting them for criminal offences. Stakeholders claimed the Malaysian government did not provide any assistance to refugees during the pandemic, including health care and economy. This article examines Malaysia’s responsibilities as a host country to refugees during the Covid-19 outbreak. The Malaysian government is proposed to continuously support refugees on humanitarian grounds based on the country’s economic development capabilities. This paper will look into the current situation of the Refugees in Malaysia; discuss the challenges that the Refugees in Malaysia are facing; analyse the legal framework governing the status of refugees; and check the responsibility Malaysia should assume as a host country.
        4,900원
        112.
        2022.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 장흥지역에서 자생 및 재배한 총 3가지 식물을 수증기 증류 추출(편백, 석창포, 라벤 더)을 통해 얻은 각 천연 에센셜 오일에 대한 GC-MSD 향기 성분 분석 후 추출된 오일들과 시판 오일(클 라리세이지, 시나몬, 프랑킨센스)을 조합하여 세포독성, 항산화, 항염, 미백 효과를 확인하여 화장품 소재로 서의 가능성을 확인하였다. 향기 성분 분석 결과 편백 오일의 주요 성분으로는 Sabinene, 석창포 오일은 Asarone, 라벤더 오일은 L-Linalool이 동정되었다. 6종 에센셜 조합 오일의 세포독성이 확인되지 않은 100 μL/mL의 농도에서 NO 생성은 27.76% 억제, DPPH 라디칼 소거능은 99.69%, ABTS 라디칼 소거 능은 94.66%, 티로시나아제 저해활성은 55.9%를 보여 기능성 화장품 원료로서 유용하게 활용할 수 있는 가능성을 제시하였다.
        4,200원
        113.
        2022.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        전 세계 해상 선박사고 건수는 감소하고 있지만, 국내 해상 사고 건수는 증가하고 있다. 이러한 이유에서 국내 선박의 해양 사 고를 줄이기 위한 한 가지 방법으로 사고 건수가 가장 많은 어선과 낚시어선을 대상으로 하는 어선복원성기준에 관한 연구를 수행한다. 국제해사기구(IMO)와 국내 그리고 일본, 중국, 캐나다 해외 3개국의 어선복원성기준을 각각 조사하고, 상호 비교 분석한 결과외국의 기준 들 대비 국내 기준이 가장 완화된 기준임을 알 수 있었다. 비교 분석 결과를 토대로 국내 어선복원성 기준을 보완하기 위한 어선복원성기 준 개정(안)을 5가지 평가항목에 대해서 제안했다.
        4,000원
        114.
        2022.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        우리나라에 등록 된 선박은 2019년 기준 전체 97,623척이다. 그 중 어선이 차지하는 비율은 약 67 %로 65,835척이 등록되어 있 다. 어선의 비율만큼이나 해양사고의 빈도수도 높다. 2020년 기준 전체 사고 3,535건 중 2,331건이 어선에서 발생했다. 즉 국내어선의 안전 성 향상을 위한 여러 제도적 마련이 필요한 실정이다. 본 연구에서는 어선의 안전향상을 위한 다양한 부분 중에서 어선과 관련된 국내외 조종성능에 대한 국내외 평가 규정을 살펴보았다. 또한 상선에 비하여 설계 기준이 명확히 정립되지 않은 어선의 타면적 설계 현황을 살 펴보기 위하여 국내 조업 중인 153척의 어선 타면적 비율를 조사하였다. 그 결과 대다수의 어선이 국제적 기준에 미달하여 타면적을 설계 하고 있음을 통계적으로 확인하였다. 향후 이러한 분석 결과는 국내 어선의 조종성능 향상을 위한 타면적 설계 기준마련을 위한 기초 자 료로 활용하고자 한다.
        4,000원
        115.
        2022.04 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The frequent detection and occurrence of micropollutants (MPs) in aquatic ecosystems has raised public health concerns worldwide. In this study, the behavior of 50 MPs was investigated in three different domestic wastewater treatment plants (WWTPs). Furthermore, the Kruskal-Wallis test was used to assess the geographical and seasonal variation of MPs in the WWTPs. The results showed that the concentrations of 43 MPs ranged from less than 0.1 to 237.6 μg L-1, while other seven MPs including 17-ethynylestradiol, 17-estradiol, sulfathiazole, sulfamethazine, clofibric acid, simvastatin, and lovastatin were not detected in all WWTPs. Among the detected MPs, the pharmaceuticals such as metformin, acetaminophen, naproxen, and caffeine were prominent with maximum concentrations of 133.4, 237.6, 71.5, and 107.7 μg L-1, respectively. Most perfluorinated compounds and nitrosamines were found at trace levels of 1.2 to 55.3 ng L-1, while the concentration of corrosion inhibitors, preservatives (parabens), and endocrine disruptors ranged from less than 0.1 to 4310.8 ng L-1. Regardless of the type of biological treatment process such as MLE, A2O, and MBR, the majority of pharmaceuticals (except lincomycin, diclofenac, iopromide, and carbamazepine), parabens (except Methyl paraben), and endocrine disruptors were removed by more than 80%. However, the removal efficiencies of certain MPs such as atrazine, DEET, perfluorinated compounds (except PFHxA), nitrosamines, and corrosion inhibitors were relatively low or their concentration even increased after treatment. The results of statistical analysis reveal that there is no significant geographical difference in the removal efficacy of MPs, but there are temporal seasonal variations in all WWTPs.
        4,500원
        120.
        2022.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was carried out the estimation on consumption patterns and consciousness of domestic forage for improvement of the quality of domestic forage. Although the cultivated area in South Korea of forage has increased significantly compared to the past, the self-sufficiency rate of domestic forage has increased to around 80% since 2010. Also, livestock farmers prefer to use import forage than domestic due to convenience of use. In Korean beef farms, the ratio of import to domestic forage was higher in domestic forage (import forage 3 : domestic forage 7). In the method of securing domestic forage, purchase of forage (55.6%) was higher than self-cultivation of forage (44.4%). The ratio of use by bailing type was shown in the order of rice staw rice straw (50.5%), domestic hay (15%), imported hay (12.5%), and total mixed ratio (10.7%). The preference of forage was in the order of amount of foreign matter, moisture content, price, feed value in Korean native cattle farm. The result of satisfaction with domestic and import forage showed that the satisfaction of domestic forage price was higher than import forage, while the moisture content and foreign matter of forage were lower than import forage. In addition, in the results of the satisfaction and importance of domestic roughage compared to imported roughage, satisfaction with imported roughage was generally high in all items except for price. As a result, in order to improve the satisfaction of domestic forage in Korean native cattle farm, it is necessary to minimize foreign matter in forage and increase hay production for moisture content uniform in forage.
        4,000원