• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2014년도 춘계학술대회
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• pp.421-424
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• 2014

현재, 차량용 블랙박스 및 CCTV와 같은 영상처리 제품들이 시중에 보급되어 사용자들에게 편리함을 주고 있다. 특히 블랙박스는 운전자들이 운전 중 차량사고가 발생 했을 시 사고의 원인을 파악하는데 도움을 얻고 있다. 하지만 블랙박스는 차량의 전방이나 후방만을 확인 가능하기에 운전자의 시야 또는 블랙박스의 화각 이외의 장면을 확인할 수가 없다. 이러한 문제점을 해결하기 위해 블랙박스 시스템을 좀 더 진보시켜 AVM(Around-View Monitoring)시스템이 개발 되었다. AVM 시스템은 차량의 위에서 내려다보는 영상을 얻어 전후, 좌우의 영상 즉 차량의 $360^{\circ}$ 영상을 확보할 수가 있다. 이 시스템은 차량에 데스크탑이 설치 되어있어야 영상을 확보할 수 있다는 조건이 붙는다. 본 논문에서 제안하고자 하는 안드로이드 기반 AVM시스템은 PC를 차량에 설치해야 한다는 단점을 없앤다. 테블릿 장비들을 이용하여 차량의 전후, 좌우 영상을 확보할 수 있는 시스템을 설계하고자 한다.

• 한국HCI학회논문지
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• 제14권1호
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• pp.15-22
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• 2019

본 연구에서는 인공지능 대화형 에이전트인 스마트 스피커의 지능형 에이전트로서의 속성, 즉 자율성, 사회성, 반응성, 능동성, 시간연속성, 목표지향성에 대하여 이용자들이 일상적 상호작용을 통하여 어떤 기대를 가지는지, 또한 어떤 기대격차를 갖는지 살펴보고자 하였다. 이를 위해 스마트 스피커 이용자들을 대상으로 반구조화 인터뷰(semi-structured interview)를 진행하고 그라운드 이론에 기반하여 분석하였다. 연구 결과 사람들은 기술수준의 한계로 인해 스마트 스피커의 사회성이나 인간다움에 대해 큰 기대격차를 갖고 있었다. 스마트 스피커의 반응성에 대해서는 긍정적인 기대격차를 갖는 것으로 드러났고, 시간연속적으로 정보를 기억하는 것에 대해서는 정보의 민감성 정도나 제시방식에 따라 양가적 기대격차가 나타났다. 자율적인 추천에 대해서는 낮은 기대수준이 나타났고 능동적인 말걸기에 대해서는 맥락에 맞는 경우에만 선호하는 것으로 나타났다. 본 연구는 스마트 스피커와 상호작용하는 방식을 설계하고 기대 수준을 관리하는데 있어서 함의점을 제시한다.

• Nuclear Engineering and Technology
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• 제51권6호
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• pp.1708-1714
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• 2019

The purpose of the critical evaluation of the spent fuel pool (SFP) is to verify that the maximum effective multiplication factor ($K_{eff}$) is less than the critical safety limit at 100% stored condition of the spent fuel with the maximum reactivity. At nuclear power plants, the storage standard of spent fuel, ie, the loading curve, is established to prevent criticality from being generated in SFP. Here, the loading curve refers to a graph showing the minimum discharged burnup versus the initial enrichment of spent fuel. Recently, US NRC proposed the new critical safety assessment guideline (DSS-ISG-2010-01, Revision 0) of PWR SFPs and most of utilities in US is following it. Of course, the licensed criterion of the maximum effective multiplication factor of SFP remains unchanged and it should be less than 0.95 from the 95% probability and the 95% confidence level. However, the new guideline is including the new evaluation methodologies like the application of the axial burnup profile, the validation of depletion and criticality code, and trend analysis. Among the new evaluation methodologies, the most important factor that affects $K_{eff}$ is the axial burnup profile of spent fuel. US NRC recommends to consider the axial burnup profiles presented in NUREG-6801 in criticality analysis. In this paper, criticality effect was evaluated considering three profiles, respectively: i) Axial burnup profiles presented in NUREG-6801. ii) Representative PWR axial burnup profile. iii) Uniform axial burnup profile. As the result, the case applying the axial burnup profiles presented in NUREG-6801 showed the highest $K_{eff}$ among three cases. Therefore, we need to introduce a new methodology because it can be issued if the axial burnup profiles presented in NUREG/CR-6801 are applied to the domestic nuclear power plants without any other consideration.

• 한국콘텐츠학회논문지
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• 제19권9호
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• pp.47-56
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• 2019

국내 여행 수요 증가 추세에 맞춰 다큐멘터리 포맷에서 주어진 대본 없이 출연자들이 상호작용하는 리얼리티 여행프로그램이 증가하고 있다. 본 연구에서는 리얼리티 여행 프로그램의 시청 동기가 프로그램에 대한 시청 만족도와 여행지 방문 의도에 어떤 영향을 끼치는지 실증적으로 탐색하였다. 연구결과로 첫째, 리얼리티 여행프로그램의 시청 동기로는 '오락성', '공감성', '심미성', '정보성', '상호작용', '간접경험' 요인을 확인하였다. 둘째, 리얼리티 여행 프로그램에서 시청 만족과 여행지 방문 의도에 긍정적 영향을 미치는 공통 요인은 '심미성'과 '간접경험'이었다. 여행지의 아름다움과 실제 여행하는 출연자의 모습에 감정 이입함으로써 프로그램에 만족하고, 그 여행지에 방문해보고 싶다는 긍정적인 영향을 주었다. 리얼리티 여행프로그램의 시청 동기가 프로그램에 대한 태도와 여행지 방문 의도에 긍정적인 영향을 준다는 것을 검증함으로써 리얼리티 여행프로그램의 이론적 토대를 제공하였다.

• 한국콘텐츠학회논문지
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• 제19권9호
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• pp.646-657
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• 2019

문화콘텐츠가 1990년대 후반 우리 사회에서 새롭게 부상하여 성장한 지 벌써 20년이 되어가고 있다. 그러나 문화콘텐츠 개념 규정 및 독립적인 학문으로 정립하기 위한 노력은 상대적으로 빈약하다. 다양한 이유가 있겠지만 가장 중요한 것으로 '문화콘텐츠'라는 말이 가진 폭넓은 의미의 자장을 포괄하면서도 핵심을 통어하는 주요 개념을 제시하지 못한 것을 들 수 있다. 따라서 본 연구는 문화콘텐츠는 21세기의 놀이학이 되어야 한다는 전제 아래, 놀이에서 문화콘텐츠학을 정초하기 위해 필요한 개념적 자원을 확보할 수 있는 가능성을 검토하였다. 이를 위해 우리가 현재 사용하는 문화콘텐츠의 의미와 관련이 깊다고 판단되는 세 가지 개념적 범주 즉, 모방, 미학, 권력을 중심으로 각각에서 놀이가 어떠한 의미를 획득하고 활용되는지를 살펴보았다. 결과적으로 놀이는 감성, 예술, 지각, 인식, 교육, 우연, 힘, 헤게모니, 계급, 종교, 의례, 육체 등과 같은 다양한 개념들과 연관되어 다채롭게 사용되는 것을 확인하였다. 놀이 개념의 이러한 다양한 활용법은 문화콘텐츠 연구자들에게 일정 부분 놀이의 관점에서 문화콘텐츠를 연구할 수 있는 계기를 제공할 수 있을 것이라 생각한다.

• Parasites, Hosts and Diseases
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• 제59권1호
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• pp.97-101
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• 2021

The infection status with Clonorchis sinensis metacercariae (CsMc) was examined in freshwater fishes from Yongjeon-cheon (a branch of Nakdong-gang) located in Cheongsong-gun, Gyeongsangbuk-do, the Republic of Korea (Korea). A total of 750 fishes in 19 species were examined by the artificial digestion method for 2 years (2019 and 2020). CsMc were detected in 378 (51.4%) out of 735 fishes in 14 species (73.7%), and the infection intensity was 666 per fish infected. In 2019, CsMc were found in 172 (68.0%) out of 253 fishes in 10 species, and the infection intensity was 565 per fish infected. In 2020, CsMc were detected in 206 (62.2%) out of 331 fishes in 10 species, and the infection intensity was 751 per fish infected. The other zoonotic trematode, ie. Metagonimus spp., Centrocestus armatus, Echinostoma spp. and Clinostomum complanatum, metacercariae were also detected in fishes from the survey streams, but their endemicities were relatively low. Conclusively, it was first confirmed that CsMc are highly endemic in fishes from Yongjeon-cheon in Cheongsong-gun, Gyeongsangbuk-do, Korea.

• 한국임상약학회지
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• 제31권2호
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• pp.115-124
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• 2021

Background: With an increase in the number of breast cancer survivors, greater importance is attached to health-related quality of life, particularly pain and symptom control. This study aimed to identify the factors that are associated with pain in cancer patients based on the patterns of prescribing opioid, non-opioid, and adjuvant analgesics. Methods: This analysis included new patients who had developed breast cancer between 2003 and 2012. The degree of pain was analyzed based on the socio-demographic (age, income quintile, number of hospitalizations, and duration of disease), indicator (Body Mass Index; BMI, Charlson Comorbidity Index; CCI, Cumulative Analgesic Consumption Score; CACS), operation (mastectomy, lymph node dissection), and therapy (chemotherapy, radiation therapy), as well as complication-related variable (lymphedema). Results: As for the patterns of prescribing analgesics by stages, non-opioid and opioid analgesics constituted 30.7 and 69.3%, respectively. The mean value and variance of CACS were 5.596 and 12.567, respectively. The factors that significantly affected the degree of pain were age (≥50; IRR: 1.848, 95% CI 1.564-2.184, p=0.000), income quintile (IRR: 0.964, 95% CI 0.938-0.991, p=0.008), BMI (≥ 25; IRR: 1.479, 95% CI 1.222-1.795, p=0.000), CCI (≥ 4; IRR: 1.649, 95% CI 1.344-2.036, p=0.000), and lymphedema (yes; IRR: 1.267, 95% CI 1.006-1.610, p=0.047). Conclusions: It is necessary to develop systematic and comprehensive pain control measures to improve the quality of life for breast cancer survivors, especially for those who are 50 years or older, lie in the lower-income quintile, have BMI of ≥25 and CCI score ≥ 4, or have lymphedema.

• 인간식물환경학회지
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• 제23권2호
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• pp.179-189
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• 2020

In order to increase the indoor air purification effect of plants, plants need to be placed on 5-10% of indoor spaces. To increase the density and utilization of plants in indoor spaces, studies on bio-wall, a vertical green wall system, have been recently conducted. The purpose of this study was to investigate the growth characteristics of 7 indoor plants introduced to the system and their rooting zones at different irrigation cycles. This study was conducted to investigate a proper irrigation cycle for the continuous maintenance of bio-wall systems. The conditions of their growth environment were maintained as follows: light intensity, 20-50 μmol·m^-2·s^-1 PPFD; and temperature, 20 - 25℃. For fertilization, Hyponex diluted with water at the ratio of 1:1,000 was supplied to plants. Irrigation was treated at intervals of 1, 3, 5, and 7 days for 1 hour at a time. As a result, there was no significant difference in the growth of plants between different irrigation cycles. Dieffenbachia 'Marianne' showed a significant decrease in the number of leaves at the irrigation cycle of 7 days. In addition, the chlorophyll content was relatively low at the irrigation cycle of 7 days. In terms of the color of leaves, a decrease in L value and b value and an increase in a value were observed, resulting in changes in brightness and color. Ardisia pusilla 'Variegata' showed a slightly higher photosynthetic activity and stomatal conductance when it was watered every day and once per 5 days, while Epipremnum aureum showed a relatively higher photosynthetic activity and stomatal conductance at the irrigation cycle of 3 days. In the case of root activity, it was found that the longer irrigation cycle, the higher root activity compared to daily irrigation. The development of roots of Peperomia clusiifolia was promoted by watering at long intervals. However, in the case of Aglaonema 'Siam-Aurora', the total number of roots decreased at the interval of 7 days. In conclusion, a proper irrigation cycle for the sustainable maintenance of vertical bio-wall systems seems to be 3 days.

• 한국농공학회논문집
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• 제64권4호
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• pp.55-64
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• 2022

The objectives of this study were to assess physical habitat suitability of fish species for different life cycle stages and to suggest appropriate ecological stream flows in a Bokha downstream reach. A dominant species of Zacco platypus was selected as the study fish of which three stages of spawning, juvenile and adult in life cycle were considered into assessment. The stream hydraulic environment was calibrated with HEC-RAS before the PHABSIM simulation. The hydraulics of flow velocity and depth were used to estimate Weighted Usable Area (WUA) by multiplying respective habitat suitability indices with stream area. Overall the WUAs tend to be great in gentle slopes with relatively shallow water depth regions. Maximum WUAs, ie, candidate for ecological flow rates were 1 m³/s, 7 m³/s and 8 m³/s for the respective spawning, juvenile and adult stages of Zacco platypus. Since the ecological flow rates for juvenile and adult stages appeared to be is greater than the abundant flow rate (3.67 m³/s) for the study reach, additional water supply may be needed but should be cautious to avoid the spawning period of Apr through May from the stream water management perspective.

• 운동영양학회지
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• 제14권2호
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• pp.63-68
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• 2010

This study evaluated the effects of high pressured red ginseng(HRG) and ginseng berry(GB) supplementation on lipid profiles and run to exercise time in SD rats. Five weeks-old male rats were randomly assigned into six groups, ie. control group(AC: n = 8), exercise group(AE: n = 7), general extracted red ginseng group(C: n = 8), HRG group(high density D: n = 8, low density E: n = 7), and HRG + GB group(F: n = 7). The AC and AE groups had a supplementation of AIN-93G, and AE group performed 40 min treadmill exercise five times per week for five weeks. E, C, D, and F groups had a supplementation composed of general extracted red ginseng(GRG), HRG(250 mpk and 500 mpk), and HRG(250 mpk) + GB(167 mpk) in the AIN-93G. Main results of the study were as follow 1) the duration of running time to exhaustion was higher in exercise group compared to other groups. HRG had no effect on run to exhaustion time, but, GRG and HRG + GB showed longer run time than control groups. 2) Blood TC, TG, HDL-C and liver TG showed no difference between groups, but, liver TC showed lower level in the HRG groups than other groups. It was concluded that the 5 weeks of supplementation of HRG extract would have positive effects on liver cholesterol, and GRG and HRG + GB have a positive effect on exercise performance tested run to exhaustion time, but, we can not find a positive effect of supplementation of HRG on exercise performance.