• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2006년도 PAN PACIFIC CONFERENCE vol.2
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• pp.271-278
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• 2006

We used polymers of alternating cationic and anionic nature to build up shells on fiber surfaces, strengthen the worn-out fibers and improve paper properties made from such fibers. OCC and ONP pulps were either dipped or salted out in the cationic polyallylamine, polyacrylamide and starch solutions. After centrifugal drying, these were followed by treatments in anionic polyacrylic acid, poly-acrylamide, and starch solutions, respectively. The shell-enhanced fibers were formed into handsheets and their physical properties evaluated. The results show that building multiple shells on worn-out fiber surfaces can strengthen the fibers and paper. The simpler and more practical impregnation-centrifuging treatment provided the desired effects, whereas salting out the polymers produced somewhat superior fibers. The latter process, were impractical, however. The first pair of polymeric shells imparted marked strength improvement, whereas later layers had diminishing efficacies. Overall, the methods can improve fiber quality, attaining paper strength requirements without resorting to expensive measures. Alternate cationic polymer and filler powders were also deposited on fiber surface based on the micriparticle system in an anticipation of stiffness gains. Platy minerals, such as montmorillonite, bentonite, sericite, clay and talc were added following cationic PAM. After dewatering of polymer-pigment shelled fiber of one to 3 pairs of layers, handsheets either calendered or uncalendered were evaluated. The results indicate that regardless of calendaring, stiffness of the handsheets did not improve appreciably while certain other strength properties showed gains. We also attempted the novel starch gel filler addition method wherein tapioca starch and filers (PCC, sericite or clay) were mixed at high solids content of 50% and cooked until gelatinized. The filled handsheets were dried under various conditions and then tested for their properties. Improvements in strengths of modified filled paper were observed.

• Tuberculosis and Respiratory Diseases
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• 제84권3호
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• pp.182-187
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• 2021

Background: Fractional exhaled nitric oxide (FeNO) is a non-invasive marker for eosinophilic airway inflammation and a good predictor of response to corticosteroids. There is a need for a reliable and accurate measurement method, as FeNO measurements have been widely used in clinical practice. Our study aimed to compare two FeNO analyzers and derive a conversion equation for FeNO measurements in adults. Methods: We included 99 participants who had chief complaints of chronic cough and difficulty in breathing. The participants underwent concurrent FeNO measurement using NIOX VERO (Circassia AB) and NObreath (Bedfont). We compared the values of the two devices and analyzed their correlation and agreement. We then formulated an equation to convert FeNO values measured by NObreath into those obtained by NIOX VERO. Results: The mean age of the participants was 51.2±17.1 years, with a female predominance (58.6%). Approximately 60% of the participants had asthma. The FeNO level measured by NIOX VERO (median, 27; interquartile range [IQR], 15-45) was significantly lower than that measured by NObreath (median, 38; IQR, 22-58; p<0.001). There was a strong positive correlation between the two devices (r=0.779, p<0.001). Additionally, Bland-Altman plots and intraclass correlation coefficient demonstrated a good agreement. Using linear regression, we derived the following conversion equation: natural log (Ln) (NObreath)=0.728×Ln (NIOX VERO)+1.244. Conclusion: The FeNO values of NIOX VERO and NObreath were in good agreement and had positive correlations. Our proposed conversion equation could help assess the accuracy of the two analyzers.

• 방송공학회논문지
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• 제23권6호
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• pp.800-812
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• 2018

본 논문은 최신 가상현실 미디어 기술동향과 다양한 분야에서 시도해 온 VR 멀미저감 방안을 리뷰하여, 가상현실 사용자의 인지적 수용성을 높이는 방안에 대해 논의하였다. 이를 통해 최신 미디어 기술의 사용자 가치제안 방식을 분석하고 Social VR 플랫폼의 인지적 수용성을 개선하는 효율적 방안을 제안하였다. 생체신호 모니터링, VR 콘텐츠 적합도 분석, 멀미 메커니즘 조절, 신체동요측정 기반 멀미예측 등 다양한 멀미저감 방식 중 개발 비용과 사용자 수용성 측면에서 가장 효율적인 신체동요측정 기반 멀미예측 기술의 테스트 결과를 기술하고 적용 방안을 구체화하였다. 가상현실 체험 전 미세한 신체동요가 많은 사용자일수록 VR 멀미 민감도가 크게 증가하는 것을 확인하였다. 개인의 멀미 민감도를 반영하는 본 측정 결과를 다양한 가상현실 환경에서 테스트하고 개인특성에 따른 VR 멀미 데이터베이스를 구축한다면 AI 기반의 멀미 예측기술을 구현하는데 크게 기여할 것으로 예상된다.

• 대한건축학회논문집:계획계
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• 제34권6호
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• pp.57-66
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• 2018

In Japan, apartment housing occupies a great proportion of residence due to high population density like Korea. Although Korea and Japan are similar in big proportions of apartment housing, and apartment housing management systems and utilization behaviors, there are considerable differences. This paper examined Japanese public facilities and the status of public facility management and utilization, which differ from those in Korea. In order to analyze the status of public facilities from a perspective of management companies, a preliminary survey was conducted targeting apartment management companies in the top 100 and a field study on public facilities was conducted targeting chief directors and managers of individual housing facilities to look into public facility utilization methods, problems with public facility management, demands of residents, and utilization situations. Also, the present state of facility utilization and utilization promotion plans were investigated, based on the drawings of facilities collected. As the result, results were found in three respects; 'elements, related to building plans', 'elements, related to utilization promotion', and 'elements, related to facility remodeling, including changes of uses'. In relation to the use of public facilities in the future, a more active communication between managers and users would be needed for planning. Also, there would be a need to provide public facilities for visitors when there are events for both occupants and visitors in order to promote the use of facilities and management companies would have to share information of excellent facility models.

• 한국정보통신학회논문지
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• 제25권6호
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• pp.841-848
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• 2021

본 연구의 목적은 스마트폰을 사용하는 사용자들이 의사결정에 어떤 요소를 통해 영향을 미치는지 탐구하는 것이었다. 본 연구는 친밀감/개인 연결성, 사용/의존성, 친숙함/전문성, 효능/효과, 자아정체성, 제어 등을 독립변수로 설정하고 의사결정은 종속 변수로 설정하였다. 본 연구에서는 스마트폰 사용자 200명을 설문지를 통해 수집·분석하였으며, 변수 간 영향을 파악하기 위해 WarpPLS를 사용하였다. 이 연구는 사용자의 심리적인 의사결정이 스마트 기기에 어떤 요인으로 영향을 미치며, 이를 통해 미래 산업의 발전과 스마트 기기를 사용하는 사용자들의 특성과 수용성을 파악할 수 있다.

• 대한암한의학회지
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• 제27권1호
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• pp.1-12
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• 2022

Objectives: To report recurrent pancreatic cancer treated by Korean medicine based-integrated oncology treatment, who is improved quality of life without progression of cancer Method: A 63-year-old female patient diagnosed with recurrent pancreatic cancer in April, 2022 received Chemotherapy with Korean medicine based integrative oncology treatment. Radiologic outcome was assessed by Abdomen Computed Tomography (CT) based on Response Evaluation Criteria In Solid Tumors (RECIST). Clinical outcomes were assessed by National Cancer Institute Common Terminology Criteria for Adverse Event (NCI-CTCAE), Eastern Cooperative Oncology Group (ECOG), Numeric Rating Scale (NRS) Result: During 2months of treatment, Cancer size was stable in Abdominal CT. Chief complaints, Abdominal pain and dyspepsia, were improved and ECOG score was improved from grade 2 to 1. There were no toxicity on laboratory test and no side effects of grade 3 or higher on NCI-CTCAE. Conclusion: This report shows that Korean medicine based integrative oncology treatment might contribute to synergetic effect to Chemotherapy and improvement of quality of life

• 유통과학연구
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• 제21권7호
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• pp.51-63
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• 2023

Housing is not only a basic requirement, but also a method to maintain stability and improve living. In the period of rapid social development which has a significant impact on the aging population, the housing issue is an impediment to Gen Y in Asia. Therefore, solving the housing conundrum is the most effective solution to other social problems. Purpose: This research is conducted to investigate factors influencing housing-option decisions of Gen Y and proposes recommendations to them as well as Governments and the real estate investors. Research design, data, and methodology: The Theory of Planned Behavior was employed with the expanded variables (Financial status, Location, Public services and Government incentives) based on literature review. Results: With 445 valid responses, almost all proposed hypotheses are accepted, which supports the positive interrelationship among variables. In the stage of data processing, we have determined the influence of each factor to the dependent variable "Actual Behavior", thereby helping real estate investors understand their desires, as well as improve the ability to meet customer needs. Conclusion: This is the basis to determine the influence of these factors, thereby providing recommendations to customers and what is more, giving real estate enterprises an insight of customers' demand in order to improve product quality and optimize the benefits of each party.

• 한국간호교육학회지
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• 제5권2호
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• pp.359-375
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• 1999

This is a survey in order to provide basic information about menstrual pain management and dysmenorrhea management. Menstrual pain means low abdominal cramps during menstruation and dysmenorrhea means low abdominal pains, and other symtoms as lumbago, fatigue, G-I symptoms, etc. The purposes of this study were (1) to measure the menstrual pain and dysmenorrhea, (2) to determine factors influenced to them, and (3) to know self-management method for them of college students. The subject of this study consisted of 312 college students Data were collected by questionnaire which was to measure the menstrual pain(Visual Analogue Scale(VAS), dysmenorrhea (dysmenorrhea scale) and general informations from May to June, 1999. The results of this study were as follows ; (1) Mean age for subjects was 19.4 yrs, their height was 161.4Cm, weight, 50.9Kg, menarcheal age, 13.5yrs, menstural period, 30.1 days, and menstrual duration was 5.6 days. Most respondents replied that their menstrual bleeding was moderate (72.1%) and occured regularly(55.4%). (2) Mean menstrual pain was 5.20. Menstrual pain didn't be occured 17.4 % of respondents, periodically 46.0%, and intermittently 36.6%, most commonly beginning the first day of menstruation (3) Chief management method was endurance (40.4%), use of analgesics (29.5%) and bed rest(16.5%). (4) Factors influenced to menstrual pain were analgesics use, heavy bleeding, time of menstrual pain, life change during menstruation. (5) Most symptoms of dysmenorrhea were low abdominal pain(22.2%), lumbago (15.9%), fatigue(9.0%). (6) Factors influenced to dysmenorrhea were anlgesics use and menstrual pain. (7) By Pearson's correlation analysis, there was a significant correlation between menstrual pain and menarcheal age, menstrual period. menstrual duration. But there was no correlation between menstrual pain and height, weight (8) By Pearson's correlation analysis, there was a significant correlation between dysmenorrhea and menstrual period But there was no correlation between menstrual pain and menarcheal age, menstrual duration, height, weight The results demonstrate the importance of development and clinical trial of nursing intervention on menstrual pain and dysmenorrhea.

• 한국도서관정보학회지
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• 제9권
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• pp.241-266
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• 1982

This paper gives a summary and overview of a survey conducted at the catalogues of five universities in Daegu during November 1982. The major objective of this study was to secure information about user needs in order to improve the catalogue in Korean university libraries. Data was collected by a combined method of questionnaire and interview. A total of 379 respondents were taken on a randomly selected sample of catalogue users. Results of the survey can be summarized as follows: 1. Eighty-eight percent of the students answered that they had used the library more than twice a month. Nevertheless the number of students consulting the catalogue with the same frequency was only 220, or a n.0, pproximately 58 percent. Those who used the library most tended to use the catalogue more than those who rarely came to the library. 2. Those who had been shown how to use their own catalogue were only 32.5percent of which the students found the instruction sufficient for them to be able to use the catalogue were only 37.5 percent. In particular, they stated that instructions by printed materials and/or library orientation were so poor that they didn't give much help in using the catalogue. This problem makes many libraries to review their own method of instruction in order to encourage patrons to use the catalogue more effectively. 3. Most of the students consulted the catalogue in order to locate library materials. Known-item searches and subject searches were 84 and 16 percent respectively. While 70.5 percent of the students used the author-title catalogue without any difficulties, only 35.5 percent of those stated that using the classed catalogue was easy. 4. It was surprising that the number of students using title access in the search was far greater than that of students using author access. In contrast with this, other studies conducted by many earlier overseas investigators revealed that the great majority of patrons tended to use the latter first. Therefore, we should put more emphasis on the title entries in the catalogue itself as well as cataloging rules. 5. Most useful bibliographic elements in the entry were author, title, call number, date and publisher whereas edition, series statement and the location of publisher were rarely used compared with the other elements. Content note was the most desirable element in the entry to be involved, for many catalogers were used not to describe it on the note area. 6. The chief reason given for not using the catalogue was "I can manage without it" with "It's difficult to understand contents of the card entry." The other one was "It's useless to search materials by the catalogue because I've failed so many times to obtain them out of the stock." In response to this, circulation and acquisition system should be improved not to make such complaints any more.

• 정보처리학회논문지B
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• 제8B권5호
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• pp.455-462
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• 2001

웹은 이제 인터넷의 중요한 서비스중의 하나가 되었다. 웹 공간을 탐색할 때 사용자들은 항해하는 동한 만나는 흥미 있는 사이트들을 기록하기 위해 북 마크 기능을 이용한다. 북 마크 기능을 이용할때 겪는 문제중의 하나가 거듭된 새로운 북 마크의 추가로 인해 북 마크 리스트의 길이가 길어지면 북 마크 리스트가 일관성 있는 구성을 잃어버리게 되어 실제적인 도움을 주기 어렵다는 것이다. 사용자가 북 마크 파일을 효율적이고 체계적으로 유지하기 위해서는 북 마크 파일에 추가되는 새로운 북 마크들을 카테고리별로 분류하여 신규 폴더를 찾아 삽입해주어야 한다. 본 논문에서는 대응되는 웹 문서들을 다운 받아 내용을 분서함으로써 자동으로 북 마크를 분류하는 BClassifier라 불리는 학습에이전트를 소개한다. BClassifier 에이전트를 위한 훈련 예의 주된 공급원은 바로 사용자가 명시적으로 이미 주제에 따라 몇 개의 북 마크 폴더들로 분류해놓은 북 마크들이다. 여기에 주제 카테고리들을 확대하고 이들에 대한 훈련 문서들을 확보하기 위해 추가적으로 Yahoo 사이트의 최상휘 카테고리들로부터 웹 문서들을 수집하여 훈련 예에 포함시킨다. BClassifier 에이전트는 잘 알여진 확률기반의 분류 기술이나 나이브 베이지안 학습 방법을 채용하고 있다. 본 논문에서는 BClassifier 에이전트에 관한 몇 가지 실험 결과를 소개하고 평가한다. 나이브 베이지안 방법과 k-최근접 이웃 방법, TFIDF 등과 같은 서로 다른 학습 방법들과 비교 실험 결과도 제시한다.