• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2006.05a
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• pp.81-90
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• 2006

The GNUnet proposed a file encoding method by 1KB block size to support anonimity of files, decentralizes encoded block to peers through unstructed mode and original data decoding method a block searching or encoded blocks. but, the encoding and block decentralizing method with $600\sim700MB$ large multimedia file appered two problems. First problem, it need addition R block and I block, which make about 4% of storage resource. Second problem, unstructured model added network load by broadcasting decentralizing method. Third problem, The critical point of keyword search function. This paper suggest variable encoding block size and structured model by block decentralizing solution. Suggested encoding method reduced block request supplementary block generation from 4% to 1%, network load by proposal structured model sending answer through dedicated peer to decentralize block and we defined content-based keyword and identifier of sharing file.

• Korean Journal of Ecology and Environment
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• v.36 no.2 s.103
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• pp.139-149
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• 2003

This study was conducted to determine limiting nutrients and the physiological characteristics of phytoplankton in response of nutrients in Lake Paldang from March 2002 to October 2002. A field research was conducted along with laboratory batch culture experiment to find the limiting nutrients and the growth kinetics. According the results of Chl. a TP relationship, TN/TP ratio, and nutrient addition bioassay, phosphorus appeared to be a major limiting nutrient in Lake Paldang and thus the lake productivity was greatly influenced by it. P limitation for the phytoplankton of Lake Paldang varied with season, and the possibility of limitation by nitrogen and silica also occurred. The degree of P limitation was greatest during spring when the concentration of dissolved phosphorus is relatively much lower than summer and autumn. The maximum growth rate (${\mu}_{max}$) and half saturation concentration ($K_u$) of Lake Paldang phytoplankton ranged from 0.8${\sim}$1.1$day^1$ and from 0.1${\sim}$O.8${\mu}M$, respectively. $K_u$ was highest during May ($0.8{\mu}M$) and the lowest during September ($0.1{\mu}M$). Such result may be induced by the phytoplankton cell quota that showed the lowest concentration ($0.13{\mu}gP/{\mu}gChl.$ a) during May. The growth kinetics showed that phytoplankton growth in Lake Paldang was faster during summer and autumn than spring, suggesting that the Potential of algal bloom is high after the summer monsoon season.

• Korean Journal of Clinical Laboratory Science
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• v.51 no.4
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• pp.406-413
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• 2019

This study was undertaken to investigate the distribution of human papillomavirus (HPV) subtypes and cervical lesions in Busan. Furthermore, the cytological and histological findings of cervical lesions were compared to determine the usefulness of the currently released vaccines. HPV subtypes of 2,130 patients who visited Haeundae Paik Hospital between January 2013 and March 2016 were analyzed by the HPV 9G DNA chip. Liquid-based cytological examination was performed, and subtypes were classified according to the 2001 guidelines of The Bethesda System. Biopsy or hysterectomy specimens were subjected to hematoxylin and eosin staining for histological examinations. Of the total 2,130 cases, 1,254 (58.9%) were positive for HPV, and 876 (41.1%) were negative. Of these, 152 (7.1%), 97 (4.6%) and 80 (3.8%) were identified as HPV 16, 68 and 56, respectively. Of the 329 cases encompassing the above three HPV subtypes, histopathological analysis diagnosed 155 (47.1%) cases with CIN2 or higher grade. Notably, the occurrences of HPV subtypes 16, 68, 56, 58 and 51 were most frequently diagnosed in Busan. Further analysis revealed that administration of Gardasil^Ⓡ 9, the currently available vaccine in the market, exerts no protection against subtypes 68, 59 and 51. This study aims to provide an important reference for future HPV vaccination programs in Busan.

• Journal of Digital Convergence
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• v.16 no.12
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• pp.635-640
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• 2018

The study conducted a Focus Group Interview (FGI) on college students to identify single-person households and Solitary Deaths of single-person households recognized by college students. This can be provided as basic data to address problems in single-person households and social problems such as future youth solitary death and will contribute to building a social safety net. This study conducted FGI to analyze data for five fourth graders majoring in social welfare. In the case of involuntary independent living, the high poverty and unemployment rate of single-person households was cited as the cause of economic instability, housing problems and emotional relationship formation. He said that he thinks about young loneliness because he has vague fears about what happens in the media and what can happen to them. As the number of young single-person households will inevitably increase in the coming months and economic difficulties are the biggest problem and the biggest cause of young solitude, institutional support is needed first, especially for housing costs.

• Journal of Digital Convergence
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• v.17 no.8
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• pp.453-463
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• 2019

The purpose of this study was to investigate one-person household its health-related quality of life(HRQOL) using data from the seventh Korea national health and nutrition examination survey(KNHANES Ⅶ-2) 2017. The subjects were 301. The data were analyzed by frequency, descriptive analysis and linear regression analysis using SPSS complex samples Win 25 program. The HRQOL score was 0.92, and 2.5% of the subjects in the pain and discomfort area had severe problems. HRQOL related to the subject was 0.034, 0.039, and 0.031, respectively, when the household income level was lower, the education level was lower than elementary school graduates, and if they did not drink at present. HRQOL was 0.072, 0.065, 0.103, and 0.040 in perceived health status good or moderate, the absence of activity limitation and arthritis, was explained 43.1%. There is a need to develop interdisciplinary approaches with great interest in improving the one-person households HRQOL.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.1
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• pp.295-304
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• 2019

This paper introduces a customized Smart Fire and Crime system for one person households. Recently, the number of one person household has skyrocketed due to the increasing number of one person household and the aging population. As a result, the demand for private security companies for one person household is increasing and smart security systems that are applied with rapidly evolving IoT and sensor technologies are also becoming a major issue. However, despite the increasing trend of one person households, the existing system focuses on multiple households, so that there are disadvantages of the one person households to operate in such a big system which operate separately. Therefore, in this paper, we design and implement a system that provides a personalized safety service for one person household that integrates a security system and a fire monitoring system. This will help prevent criminal activity in places where the police can not reach at a lower cost than using existing private companies, and help monitor the situation of the houses in real time.

• The Journal of the Convergence on Culture Technology
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• v.9 no.1
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• pp.635-648
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• 2023

In the current situation of social distancing due to COVID-19, the use of one-person hair salons, which are safer than franchise hair salons, is emerging again. One-man hair salons provide personalized services at high prices, so they can be said to be an industry that required high quality services than franchise hair salons. Despite these characteristics, many studies on hair salon services are focused on franchise hair salons. Therefore, this study was conducted through empirical analysis with the purpose of finding out how the service quality of a one-man hair salon, which required high service quality, affects behavioral intention through the coexistence of customer satisfaction and dissatisfaction. As a result of this study, it was found that the pleasure of consumers in one-person hair salons increases the intention to revisit the most. Those pleasure showed that it is more important to respond and empathize with consumers as well as its expertise of hair designers than the appearance of beauty salons. Through this study, the characteristics of a one-man hair salon were examined and significant results were found.

• Journal of Korean Society of Environmental Engineers
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• v.39 no.1
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• pp.40-49
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• 2017

In this study, we have made the annual total phosphorus (TP) mass balance diagrams for I wastewater treatment plant by utilizing the data of flow rate and TP of each process and tried to choose the optimum unit process empirically for phosphorus recovery. For the applicability evaluation, we have suggested several quantitative indices of flow rate, TP concentration, TP load and SS. Based on the analyses of TP mass balance, it became clear for reducing TP load of the wastewater treatment plant that it is efficient to recover phosphorus from the side stream in which the amount of flow rate is just 1/16, but TP concentration and load are 78 and 4.8 times larger than those of the influent of the plant. After the detailed applicability evaluation for the side stream, it could be concluded that the unit process of waste activated sludge thickener supernatant or dehydration filtrate are appropriate. Meanwhile, we did fundamental experiments utilizing the dewatering filtrate with TP concentration of 141.5 mg/L. After adjusting pH 10 and $Ca^{2+}$ concentration 250, 500, 1000 mg/L, it was stirred slowly. As a result, the $PO_4-P$ and TP removal efficiencies were above 95 percent; the results of the experiment imply the applicability of phosphorus recovery process in a wastewater treatment plant strongly.

• Journal of Embryo Transfer
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• v.6 no.1
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• pp.1-11
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• 1991

가축의 일란성 쌍태를 생산하기 위한 기술 개발을 확립하고자 상실배 및 포배기에 있는 BALB/c 계통의 생쥐 수정란을 micromanipulator로 분할 수정란을 작출하고 이를 체외배양을 실시하여 발달성적을 조사하였으며, 외과적 및 비외과적 이식을 실시하여 착상율 및 산자생산 성적을 조사한 결과는 다음과 같다. 1. 상실배 및 포기배에 있는 총 811개의 정상적인 수정란을 분할하여 이중에서 666(82.1%)개가 분할시의 물리적인 손상이 없이 분할되었고, 이때 분할 성공율은 발달단계 간에 유의적(P<0.05)인 차이가 없었다. 2. 분할 수정란중 상실배는 30-36시간, 초기 배반포 및 확장 배반포는 3-6시간 배양을 실시한 결과 분할 수정란중 한쌍이 모두 정상적으로 배양된 것은 각각 70.0%, 80.4% 및 73.1%로써 이들 발달단계 간에 유의적(P<0.05)인 차이가 없었다. 3. 분할된 상실배와 정상적인 수정란의 이식후 수태율은 각각 63.6% 및 61.3%로써 유의적(P<0.05)인 차이가 없었다. 그러나 분할된 상실배에 있어서 배양을 하지 않고 이식한 경우에는 전혀 수태되지 않았다(P<0.05). 4. 분할된 포배기 수정란을 체외 배양후 이식한 수태율(55.5%)과 배양과정을 거치지 않고 이식한 성적(43.8%) 그리고 정상적인 포배기 수정란을 이식한 수태율(55.4%) 간에는 유의적(P<0.05)인 차이가 없었다. 5. 분할 수정란을 외과적 방법으로 이식한 경우는 52.8%의 수태율을 얻었으나, 비외과적 방법으로 이식한 경우 27.5%로써 외과적 방법으로 이식한 경우보다 수태율이 유의적(P<0.05)으로 낮았다.

• 한국벤처창업학회:학술대회논문집
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• 2024.04a
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• pp.75-79
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• 2024

생성형AI(Generative AI, GenAI) 서비스는 단순/반복적인 업무를 자동화하고, 많은 일자리의 생산성 향상에 도음을 주어 전반적으로 기존 일자리 감소에 영향을 줄 것이다. 반면에 높은 수준의 생성형AI 기술을 낮은 비용으로 활용할 수 있게 하고, 예술, 게임, 미디어 산업 등 창작 영역과 플랫폼 기반의 서비스 출시에 도움을 주어, 창조적 아이디어에 기반한 소수의 인원이 참여하는 1인 창조기업에서 새로운 일자리 창출에 긍정적인 영향을 줄 것이다. 본 연구의 목적은 1인 지식 창업자라고 할 수 있는 컨설턴트, 강사들이 생성형AI의 강점인 창의성을 활용하여 업무 효율을 높이는 데 적극적으로 활용할 수 있도록 생성형AI 서비스 특성이 지속이용의도에 미치는 영향을 분석하는데 있다. 본 연구에서는 기술수용모델(TAM)을 활용하여 생성형AI의 서비스 특성인 효율성, 창의성, 의인화, 개인화 및 자율성이 지속이용의도에 미치는 영향에 관한 연구를 인지된 유용성과 인지된 이용 용이성을 중심으로 진행하였다. 따라서 본 연구에서는 생성형AI의 서비스 특성이 인지된 유용성과 인지된 이용 용이성을 증진하고, 인지된 유용성과 인지된 이용 용이성이 지속 이용의도에 영향을 미칠 것이라는 인과적 경로를 검증하고자 한다. 1인 창업자가 외부의 도움없이 지속적으로 높은 수준의 업무효율를 유지할 수 있게 도움이 되는 지속사용의도를 종속변수로 설정하여 본 연구를 진행하였다.