• 한국컴퓨터정보학회논문지
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• 제13권2호
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• pp.121-125
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• 2008

멀티미디어와 관련한 소프트웨어 및 하드웨어의 기술적 발달로 인해 자료로부터 추출된 정보를 저장하거나 표현하는 수단으로써 영상이 사용되어지고 있다. 특히 유비쿼터스 환경에서는 이들 영상을 형성하고, 감지하며, 기록 및 전송하는 처리과정에서 다양한 원인으로 인해 노이즈(noise)가 부가된다. 이들 노이즈를 제거하기 위해 영상 복원에서는 각 노이즈 특성에 맞도록 적합한 필터링을 활용하게 된다. 뿐만 아니라 저해상도의 여러 영상들을 고해상도 영상으로 복원할 수 있는 방법 및 노이즈 혹은 훼손된 영상을 복원하는 다양한 방법과 기법들이 연구되고 있다. 이에 본 연구에서는 유비쿼터스 환경 및 의료 분야에 빈번히 발생될 수 있는 훼손된 영상으로부터 최적의 영상복원 매개변수를 적용하여 영상을 개선시키기 위한 방법으로, 사용자가 정의한 평균 필터와 위너 필터를 이용한 영상 개선 프로토타입 시스템을 구축하며, 구축된 시스템으로부터 훼손된 영상을 개선된 영상과 비교하여 노이즈의 특성과 개선된 결과를 보인다.

• 한국정보통신학회논문지
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• 제23권11호
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• pp.1351-1356
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• 2019

본 연구는 빅데이터 플랫폼을 이용해 만성질환자에 따른 개인적 요인과 지역사회요인이 삶의 질에 미치는 영향을 알아보는데 목적이 있다. 연구방법은 2017년 지역사회건강조사 자료와 통계청 시군구별 2차 자료를 사용하였고, EQ-5D 지수와 개인요인 및 지역사회요인을 구분하여 다수준분석을 실시하였다. 연구결과 남자의 경우, 나이가 어릴수록, 학력이 높을수록, 월가구소득이 많을수록, 경제활동을 하는 경우, 스포츠 인프라가 많은 경우 삶의 질이 높았다. 또한 주관적 건강감이 나쁠수록, 스트레스가 많을수록 삶의 질이 낮았다. 향후 의료 빅데이터 분석을 위해 클라우드와 오픈소스를 활용할 수 있는 하드웨어에 독립적인 플랫폼 제공을 위한 연구가 지속되어야 할 것이다.

• 한국환경과학회지
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• 제24권6호
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• pp.793-806
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• 2015

The purpose of this study is to find out the air flow patterns affecting the PM10 concentration in Busan and the potential sources within each trajectory pattern. The synoptic air flow trajectories are classified into four clusters by HYSPLIT model and the potential sources of PM10 are estimated by PSCF model for each cluster from 2008 to 2012. The potential source locations of PM10 are compared with the distribution of PM10 anthropogenic emissions in east Asia developed in 2006 for the NASA INTEX-B mission. The annual mean concentrations of PM10 in Busan decreased from $51ug/m^3$ in 2008 to $43ug/m^3$ in 2012. The monthly mean concentrations of PM10 were high during a spring season, March to May and low during a summer season, August and September. The cluster2 composed of the air trajectories from the eastern China to Busan through the west sea showed the highest frequency, 44 %. The cluster1 composed of the air trajectories from the inner Mongolia region to Busan through the northeast area of China showed the second high frequency, 26 %. The cluster3 and 4 were composed of the trajectories originated in the southeast sea and the east sea of Busan respectively and showed low frequencies. The concentrations of in each cluster were $47ug/m^3$ in cluster1, $56ug/m^3$ in cluster2, $42ug/m^3$ in cluster3 and $37ug/m^3$ in cluster4. From these results, it was proved that the cluster1 and 2 composed of the trajectories originated in the east and northeast area of China were the causes of high PM10 concentrations in Busan. The results of PSCF and CWT model showed that the potential sources of the high PM10 concentrations were the areas of the around Mongolia and the eastern China having high emissions of PM10 from Beijing, Hebei to Shanghai through Shandong, Jiangsu.

• 한국식품위생안전성학회지
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• 제31권3호
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• pp.176-185
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• 2016

본 연구는 어린이 기호식품에 대한 초등학생들의 인식과 섭취 실태/행동을 알아보고, 또 성별 및 학년과의 연관성을 알아보고자 수행되었다. 일개 도시의 13개 초등학교 주변에서 무작위 추출된 초등학생 306명(남 188명, 여 118명)에 대하여 직접면담법에 의한 설문조사를 수행하였다. 전체적으로 20% 이상의 학생이 어린이 기호식품에 대한 지식이 없었으며 또 어린이 기호식품에 대한 정보원이 없었다. 또한 60% 이상의 학생이 1주일에 1~2회 이상 학교 주변 어린이 기호식품 판매업소를 이용하는 것으로 나타났다. 어린이 기호식품에 대한 정보 습득 경로로는 학교가 37%로 가장 많고, 다음으로 가정 16%이었다. 어린이 기호식품에 대한 의식 및 행동을 나타내는 요인들 중에서 지식과 정보 습득 경로는 성별과 유의한 연관성이 있었다(p < 0.05). 또 지식, 정보 습득 경로, 태도, 섭취 이유에 있어 학년과 유의한 연관성이 있었다(p < 0.05). 남자 어린이가 여자 어린이보다 지식 수준은 높았으나(p < 0.05), 태도는 낮고 또 섭취 빈도가 높았다. 학년이 높을수록 어린이 기호식품에 대한 지식과 태도 수준이 높아지고 다양한 정보 습득 경로를 가졌으나(p < 0.05), 또한 섭취 빈도가 높았다. 이러한 결과는 조사대상자의 지식과 태도/행동의 불일치를 나타낸다. 그러므로 학생들의 주요 정보 습득 경로인 학교급식 프로그램과 학교 및 가정에서의 식품위생/안전교육이 더욱 향상되어야 함을 나타낸다. 더불어 학교주변에서 불량식품에 대한 규제도 강화되어야 할 것이다.

• Journal of Preventive Medicine and Public Health
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• 제50권3호
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• pp.210-216
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• 2017

Objectives: One way to prevent deaths due to rabies is the timely utilization of post-exposure prophylaxis (PEP). Therefore, in addition to an understanding of the epidemiological distribution of animal bites, it is necessary to explore the factors leading to delays in PEP initiation. Methods: This cross-sectional study was conducted in Iran in 2011, and included 7097 cases of animal bites recorded at the Rabies Treatment Center of the Shiraz University of Medical Sciences using the census method. Logistic regression was used to identify factors associated with delays in PEP. Results: Among the patients studied, 5387 (75.9%) were males. The prevalence of animal bites in Fars province was 154.4 per 100 000 people. Dogs were the most frequent source of exposure (67.1%), and the most common bitten part of the body was the hands (45.5%). A delay in the initiation of PEP was found among 6.8% of the studied subjects. This delay was more likely in housewives (odds ratio [OR], 4.66; 95% confidence interval [CI], 2.12 to 10.23) and less likely in people with deep wounds (OR, 0.65; 95% CI, 0.43 to 0.97). Conclusions: Although all animal bite victims received complete PEP, in some cases, there were delays. Further, the type of animal involved, the depth of the bite, and the patient's occupation were the major factors associated with a delay in the initiation of PEP for rabies prevention.

• Asian Pacific Journal of Cancer Prevention
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• 제17권11호
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• pp.4885-4892
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• 2016

Background: Chinese and Korean Americans have lower colorectal cancer (CRC) screening rates than other racial/ ethnic groups, which may be explained by a low level of CRC knowledge and a high level of misconceptions. This study explores the role of knowledge in CRC screening among these groups. Methods: Chinese (N=59) and Korean (N=61) Americans older than 50 were recruited from the Washington D.C. Metropolitan area. They completed a detailed survey and participated in focus groups to discuss their knowledge on CRC and CRC screening. Seventeen physicians, community leaders, and patient navigators participated in key informant interviews. Using a mixed methods approach, data were analyzed quantitatively and qualitatively. Results: Participants lacked knowledge about CRC and CRC screening. More than half did not know that screening begins at age 50 and there are several types of tests available. More than 30% thought CRC screening was not necessary if there were no symptoms or there was nothing they could do to prevent CRC. Focus group findings suggested understanding about CRC was limited by an inadequate source of linguistically and culturally relevant health information. For example, many participants considered CRC a western condition mainly caused by unhealthy diet. This led to under-estimations about their susceptibility to CRC. Knowledge was positively associated with self-reported screening. Participants who had higher knowledge scores were more likely to report ever having had a colonoscopy and confidence in ability to have CRC screening. Conclusions: Mixed-methods analysis provides multi-faceted perspectives on CRC knowledge and its influence on screening. Study findings can help inform interventions to increase CRC screening among Chinese and Korean Americans.

• Asian Pacific Journal of Cancer Prevention
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• 제16권14호
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• pp.5817-5822
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• 2015

The developing countries have higher mortality rates for breast cancer. A reason for this is presentation at advanced stages due to low levels of public awareness. Activities are arranged by health authorities of developing countries to increase the knowledge of women but their effectiveness has not been evaluated in detail. A multiple choice questionnaire with questions about socio-demographic profile and questions about breast cancer knowledge was designed in local language Urdu, to evaluate the knowledge of the participants before and after an audio visual educational activity in Lahore, Pakistan. Scores of 0-2, 3-5 and 6-8 were ranked as poor, fair and good, respectively. Among 146 participants these scores were achieved by 1%, 55% and 45% before activity and 0%, 16% and 84% after the activity. Overall 66% of participants increased their knowledge score. Younger age, higher education, reliance on television as source of information and being a housewife were associated with better impact of the awareness activity. For the six knowledge related questions 3%, 5%, 11%, 23%, 33% and 44% more participants gave correct answers after the activity. However 6% and 7% fewer participants answered correctly for 2 questions related to the cause and the best prevention for breast cancer. The study indicated that awareness activities are effective to increase the knowledge of women and better impact is associated with higher education and younger age of women. The component analysis showed that the questions and related presentations using medical terms have a negative impact and should not therefore be used. Analysis of activity therefore leads to identification of deficiencies which can be remedied in future.

• 한국환경보건학회지
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• 제36권6호
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• pp.496-501
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• 2010

Fish pathogenic bacteria are a considerable danger of farmed fish and a source of economic loss in the fish farming industry. In this study, $Nanoxil^{(R)}$ was compared to hydrogen peroxide and a silver colloid in terms of disinfection efficacy against E. tarda, V. anguillarum and S. iniae. A bactericidal efficacy test conducted by a broth dilution method was used to determine the lowest effective dilution of the disinfectant following exposure to test bacteria for 30 min at $4^{\circ}C$. $Nanoxil^{(R)}$ and test bacteria were diluted with distilled water (DW), hard water (HW) or an organic matter suspension (OM) according to the treatment condition. Under the OM condition, the bactericidal activity of $Nanoxil^{(R)}$ against E. tarda exhibited a lowered efficacy compared to that under the DW and HW conditions. $Nanoxil^{(R)}$ at 500 fold (dilutions on) under all of the conditions demonstrated a high bactericidal efficacy against S. iniae. As $Nanoxil^{(R)}$ possess bactericidal efficacy against fish pathogenic bacteria such as E. tarda, V. anguillarum and S. iniae, this disinfectant solution can be used to limit the spread of fish bacterial diseases.

• 한국대기환경학회지
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• 제27권6호
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• pp.692-702
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• 2011

For more effective indoor radon reduction policy and technique, we researched radon data analysis for some buildings in Seoul. Those buildings were categorized as dwelling, underground and office space and the variations of radon concentration and its sources were evaluated. The variations of radon concentrations of indoor space of buildings for a day were patterned specifically by dwelling habits and different environment. As for the new built apartments which were not yet moved in, their indoor radon concentrations were showed more than 3 times after applying interior assembly, and were 5 times higher than ones of rather old residences. As for the subway stations, the radon concentrations during off-run times were about 15% higher than run-times. 10% of radon seemed to be reduced by installation of platform screen doors. As for office space, radon concentrations during working hours were about 2.5 times higher than non-working hours. Plaster board are expected as a main source of radon for them. By radon measurement method for long-term, its data can be over estimated because it covers non-active time in office or public space. Therefore combination of short and long-term measurement method is required for effective and economic reduction. Furthermore importance of ventilation is requested as public information service for all dwelling space. And also standardization for radium content or radiation of radon is necessary.

• Asian Pacific Journal of Cancer Prevention
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• 제17권3호
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• pp.1135-1139
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• 2016

Background: Head and neck cancer (HNC) is one of the deadliest cancers worldwide. Early detection is a key determinant of HNC prognosis. Hence, raising awareness of this disease may improve survival rates. The present study evaluated the level of awareness and screening status for HNC in the general population of Jeddah, Saudi Arabia. Materials and Methods: An e-questionnaire was distributed during our HNC awareness campaign at the Red Sea Mall in Jeddah. The questions assessed HNC knowledge and screening status among participants. Results: Of the 112 respondents, 68% indicated that they had no knowledge of HNC. Social media was the major source of information (39%) for respondents. The majority (40%) believed that it was the joint responsibility of dentists, dental hygienists, and general physicians to screen for HNC; 82% had never been screened. Conclusions: Knowledge and awareness of HNC must be increased in the general population and among dental health professionals.