• Journal of Periodontal and Implant Science
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• 제23권3호
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• pp.635-645
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• 1993

This study was perfomed to investigate the prosthodontic and periodontal status of the abutment teeth in distally extending bridges(DEBs) (78 cases) and removable partial dentures(RPDs) (43 cases) for 122 patients (55 males and 57 females) visiting department of Periodontology, Seoul National University Hospital. The average wearing periods were 67.8 months for DEBs and 66.4 months for RPDs. 38.4% of the patients in DEBs and 35.9% in RPDs complainted of chewing discomfort and 22.6% and 24.4% were not chewing on the prosthodontically - treated sides, respectively. In DEBs, when the restoration for 2nd molar supported by 1st molar & 2nd premolar was grouped to type 1, 1st molar supported by 1st & 2nd premolars was type 2, and 1st & 2nd molars supported by 1st & 2nd premolars was type 3, there was a significant differences only in the tooth mobility score among clinical parameters (type 2>type 1>type 3). In RPDs, when bilateral free-end case was grouped to type 1, and unilateral case was type 2, there was a significant difference in the Gingival index (type 1>type 2). In DEBs, 62.8% of restoration were overcontoured, 72% had interproximal space closures, 30.5% overextended pontics and 86.6% overhanging margins. In RPDs, 24.4% of the restorations were overcontoured, 45.5% had interproxinal space closures and 58.3% overhanging margins. From these results of this study, periodontal problems caused by prosthodontic defects were considered to be contributing factors in chewing discomfort.

• 한국기후변화학회지
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• 제6권3호
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• pp.193-201
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• 2015

The aim of this study is to find preferred climate condition for outdoor water activity and to estimate future change of preferred season for the activity following the climate change. We chose urban public swimming pools, Hangang park swimming pools, which do not have any attractions except pools and allow people to make decision to visit pools in the morning solely based on the weather conditions as study sites. We identified the preferred climate conditions by analyzing the relationship between number of visitors and temperature, wind chill temperature and discomfort indexes. According to the result, the preferred temperature range was from $23.51^{\circ}C$ to $37.56^{\circ}C$, the wind chill temperature range was from $25.90^{\circ}C$ to $39.43^{\circ}C$, the discomfort index range was from 71.61 to 88.98 and the precipitation range was below 22.8 mm per day. When the temperature range is applied as the preferred season, in present, the length of the season is 127 days, from end of May to end of September. However, if temperature increase resulting from lower emission scenario (RCP 6.0), the season would be extended to 162 days, from early May to middle of October. If temperature is increasing under high emission scenario (RCP 8.5), the length of the season would be extended to 173 days from early May to end of October. In addition, the period of between end of July and early August, which is currently the most preferred season, would not be favored anymore due to high temperature. The result of this study further suggests the necessity of climate change adaptation activities.

• 디지털융복합연구
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• 제20권5호
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• pp.23-29
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• 2022

디지털서비스는 기존 구매계약 방식을 개선하고 코로나19 등으로 클라우드 서비스 이용이 시급한 상황에서 최상의 디지털 서비스를 신속하게 도입할 수 있게 되었고 디지털 서비스 이용과 관련 클라우드 산업의 성장을 촉진할 수 있도록 했다. 본 연구에서 신기술에 대한 개인의 기술준비도(낙관성, 혁신성, 불편성, 불안성)이 클라우드 컴퓨팅 기술의 수용의도에 어떠한 영향을 미치는지 클라우드 서비스에 대한 이해도가 상대적으로 높지 않는 사용자를 대상으로 실증분석 하였다. 또한 기술준비도가 수용의도에 미치는 영향을 디지털전환을 매개효과로 검증하였다. 연구결과, 낙관성과 혁신성이 디지털전환에 정(+)의 영향을 미쳤으며, 불편성과 불안성이 디지털전환에 부(-)의 영향을 미치는 것으로 나타났다. 그리고 낙관성, 불안성과 수용의도 간의 관계에 있어서 디지털전환의 부분매개효과를 검증되었지만, 혁신성, 불편성과 수용의도간의 관계에 있어서 디지털전환의 매개효과가 없다는 것을 검증되었다. 이러한 연구결과를 통해 기업에 실무 시사점과, 클라우드 서비스의 후속 연구방향에 대해 제시하였다.

• 대한한의학회지
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• 제43권3호
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• pp.139-149
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• 2022

Objectives: This study was designed to investigate the clinical effectiveness of Ikgibohyeol-tang(Yìqìbǔxuè-tāng) granules and Deer antler granules on fatigue symptoms. Methods: This is a 39-patient case series from a retrospective chart review of outpatients who were treated with Ikgibohyeol-tang granules and Deer antler granules at a Kyung Hee University Korean Medicine Hospital (Seoul) between 1st, January 2015 to 1st, August 2021. We reviewed the patients who complained of fatigue and analyzed changes in the degree of discomfort with fatigue and accompanying symptoms and HRV (Heart Rate Variability) score before and after treatment. Results: After taking Ikgibohyeol-tang granules and Deer antler granules, the degree of discomfort with fatigue and accompanying symptoms decreased significantly compared to before taking them. After treatment, Autonomic nervous system activity, Stress resistance, Heart Stability increased, and Stress index, Degree of fatigue decreased significantly. Conclusions: This study showed subjective symptoms and objective indicator (HRV score) were improved by taking Ikgibohyeol-tang granules and Deer antler granules.

• 한국의류산업학회지
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• 제26권1호
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• pp.123-136
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• 2024

This study aimed to assess the mobility and thermal comfort of personal protective equipment (PPE) among female healthcare workers, taking into account wearers' physique and PPE protection levels. A total of 16 participants (age: 26.3 ± 8.3 y, height: 161.5 ± 7.3 cm, body weight: 57.1 ± 11.0 kg, BMI: 21.9 ± 3.6), representing diverse body types, underwent four PPE conditions: L (Low_Plastic gown ensemble), M (Medium_Tyvek 400), H (High_Tyvek 800J with Powered Air Purifying Respirator [PAPR]), and E (Extremely high_Tychem 2000 with PAPR, Bib apron, and Chemical-resistant gloves). The mobility protocol consisted of 10 different tasks in addition to donning and doffing. The 10 tasks were repeated twice at an air temperature of 24.3 ± 0.1℃, 59±4%RH. Findings revealed a disproportionate relationship between PPE protection and wearer discomfort. Significant differences in clothing microclimate and total sweat rate were observed between the lowest (L) and highest (E) protection levels (p < 0.01), while distinctions among medium levels were inconclusive. Subjective evaluations favored conditions H and L over M and E (p < 0.05), indicating reduced heat, and humidity, increased comfort, and lower exertion. Instances of mobility discomfort, specially in the small body type group, underscored the need for a suitable PPE size system for Korean adult female medical workers. Furthermore, enhancements in gloves, shoe cover, and PAPR hood designs are essential for improving ease of movement and preventing hindrance.

• 한국정보기술응용학회:학술대회논문집
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• 한국정보기술응용학회 2005년도 6th 2005 International Conference on Computers, Communications and System
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• pp.207-210
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• 2005

Ubiquitous computing is one of the key technology areas in the "Project on Development of Ubiquitous computing and network technology" promoted by the Ministry of Science and Technology as a frontier business of the $21^{st}$ century in Korea, which is based on the new concept merging physical space and computer-based cyber space. With recent advances in Micro Electro Mechanical System (MEMS) technology, low cost and low-power consumption wireless micro sensor nodes have been available. Using these smart sensor nodes, there are many activities to monitor real world, for example, habitat monitoring, earthquake monitoring and so on. In this paper, we introduce web-based real environment monitoring system incorporating wireless sensor nodes. It collects sensing data produced by some wireless sensor nodes and stores them into a database system to analyze. Our environment monitoring system is composed of a networked camera and environmental sensor nodes, which are called Mica2 and developed by University of California at Berkeley. We have modified and ported network protocols over TinyOS and developed a monitoring application program using the MTS310 and MTS420 sensors that are able to observe temperature, relative humidity, light and accelerator. The sensed data can be accessed user-friendly because our environment monitoring system supports web-based user interface. Moreover, in this system, we can setup threshold values so the system supports a function to inform some anomalous events to administrators. Especially, the system shows two useful pre-processed data as a kind of practical uses: a discomfort index and a septicity index. To make both index values, the system restores related data from the database system and calculates them according to each equation relatively. We can do enormous works using wireless sensor technologies, but just environment monitoring. In this paper, we show just one of the plentiful applications using sensor technologies.

• Asian-Australasian Journal of Animal Sciences
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• 제30권4호
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• pp.593-601
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• 2017

Objective: The aim of this study was to evaluate heat tolerance using heat tolerance indices, physiological, physical, thermographic, and hematological parameters in Santa Ines and Morada Nova sheep breeds in the Federal District, Brazil. Methods: Twenty-six adult hair sheep, one and a half years old, from two genetic groups (Santa Ines: 12 males and 4 females; Morada Nova: 7 males and 3 females) were used and data (rectal temperature, respiratory rate, heart rate, skin temperatures; hematological parameters) were collected during three consecutive days, twice a day (morning and afternoon), with a total of six repetitions. Also physical parameters (biometric measurements, skin and hair traits) and heat tolerance indices (temperature-humidity index, Iberia and Benezra) were evaluated. The analyses included analyses of variance, correlation, and principal components with a significance level of 5%. Results: The environmental indices, in general, indicate a situation of thermal discomfort for the animals during the afternoon. Breed significantly influenced (p<0.001) physiological and physical characteristics of skin, hair, biometric measurements and Iberia and Benezra heat tolerance indices. Santa Ines animals were bigger and had longer, greater number and darker hair, thicker skin, greater respiratory rate and Benezra index and lower Iberia index compared with Morada Nova breed. Conclusion: Although both breeds can be considered adapted to the environmental conditions of the region, Morada Nova breed is most suitable for farming in the Midwest region. The positive correlation found between the thermographic temperatures and physiological parameters indicates that this technique can be used to evaluate thermal comfort. Also, it has the advantage that animals do not have to be handled, which favors animal welfare.

• 한국응용과학기술학회지
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• 제37권4호
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• pp.1052-1065
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• 2020

본 연구는 프로야구 소비자를 대상으로 프로야구 PPL광고속성이 브랜드인지, 브랜드태도 및 행동의도에 미치는 영향을 분석하였다. 프로야구 구단과 모기업의 다양한 마케팅 활용 전략으로 활용될 수 있는 방안을 제시하는데 본 연구의 목적이 있다. 본 연구는 프로야구 소비자 411명을 대상으로 실시되었다. 자료처리는 SPSS 25.0 Window Version을 활용하여 빈도분석(frequency analysis), 신뢰도 분석(correlation analysis), 상관관계 분석(reliability analysis), 다중회귀분석(multiple regression analysis)을 실시하였다. 그리고 평균분산추출지수(AVE: Confirmatory Factor Analysis)와 개념신뢰도(CR: Construct Validity)를 산출하여 집중타당도(Convergent Validity) 및 판별타당도(Discriminant Validity)를 검증하였다. 또한, AMOS 25.0을 활용하여 확인적 요인분석(Confirmatory Factor Analysis: CFA)을 실시하였다. 그 결과 첫째, PPL광고속성의 하위요인인 오락성, 정보성, 불편성은 브랜드인지에 유의한 영향을 미치는 것으로 나타났다. 둘째, PPL광고속성의의 하위요인인 오락성, 정보성, 불편성은 브랜드태도에 유의한 영향을 미치는 것으로 나타났다. 셋째, PPL광고속성의의 하위요인인 오락성, 정보성, 불편성은 행동의도에 유의한 영향을 미치는 것으로 나타났다. 넷째, 브랜드인지, 브랜드태도는 행동의도에 유의한 영향을 미치는 것으로 나타났다.

• 대한토목학회논문집
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• 제33권6호
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• pp.2447-2453
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• 2013

본 연구에서는 강우, 불쾌지수, 강설, 체감온도 등 4가지 기상조건이 대중교통수요에 어떤 영향을 미치는지 관련 통계자료를 이용해 분석을 실시하고, 설문조사를 통해 그 이유를 도출하였다. 모든 자료는 일단위로 수집하였고, 평일-주말과 여름-겨울로 구분하여 분석을 실시하였다. 분석결과, 샘플수가 부족한 강설을 제외하고는 강우, 불쾌지수, 체감온도의 기상조건이 대중교통 수요를 약 2~7% 감소시키는 것으로 나타났다. 수요의 감소폭이 통계적으로 유의한지 알아보기 위해 t-검정을 실시하였는데, 이중 강우와 체감온도가 통계적으로 유의하다는 결과를 얻었다. 상관분석 결과도 강우와 체감온도 2가지 지표가 상대적으로 높은 상관관계를 나타냈으며, 야외에 노출되어있는 버스가 지하철에 비해 높은 상관관계를 보였다. 그리고 통계적으로 유의한 결과가 나온 강우와 체감온도, 2가지 지표에 관한 설문을 실시하였다. 수도권에 거주하는 일반시민을 대상으로 설문을 실시한 결과, 평상시에 응답자 중 약 50%가 버스를 이용하였는데, 이중 강우가 발생하거나 체감온도가 낮아지면 버스 이용이 약 30%대로 감소되는 반면, 승용차와 지하철통행은 약 10% 증가되는 것으로 분석되었다. 본 연구 결과는 기후변화에 따른 대중교통정책 및 운영방법 결정에 기초자료로 사용되어질 수 있을 것으로 기대된다.

• 치위생과학회지
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• 제14권3호
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• pp.417-423
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• 2014

이 연구는 국민건강영양조사를 이용하여 우리나라 만 65세 이상 노인을 대상으로 보철 상태에 따른 건강관련 삶의 질을 조사하여, 노인의 구강건강증진의 기초자료를 확보하고자 하였으며, 다음과 같은 결론을 얻었다. 전체 연구대상자의 HRQoL은 0.86이었으며, 성별에 따른 HRQoL은 남자에서 0.90에 비해 여성에서 0.82로 남자가 유의하게 높았으며, 월 평균 소득이 증가할수록, 학력수준이 높을수록, 상실치아 개수가 낮을수록 HRQoL이 유의하게 높았다. 연구대상자 중 고정성 가공의치와 총의치 필요한 대상자는 HRQoL이 유의하게 낮았으며, 부분의치와 총의치를 장착하지 않은 대상자에서 HRQoL이 유의하게 높았다. EQ-5D의 현재의 건강 상태 5개의 항목에서 운동능력 항목은 부분의치 장착군에서 비장착군에 비해 어려움에 대한 응답한 비율이 높았으며, 자기관리 항목에서 총의치장착군에서 어려움이 있다고 응답한 비율이 높았다. 불안/우울 항목에서 총의치 장착군이 비장착군에 비해 어려움이 있다고 응답한 비율이 높았다.