• 한국ITS학회 논문지
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• 제17권4호
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• pp.14-25
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• 2018

최근 빅데이터 시대의 도래와 함께 교통사고와 관련된 요인을 설명하기 용이해졌다. 이에따라 최신 분석 기법을 적용하여 교통사고 자료를 분석하고 시사점을 도출할 필요가 있다. 본 연구의 목적은 고속도로 교통사고 자료를 이용하여 고속도로의 주요 분석 단위인 콘존의 교통사고 건수를 예측하기 위하여 음이항 회귀모형과 딥 러닝을 이용한 기법을 적용하고 예측 성능을 비교하였다. 예측 성능 비교 결과, 딥 러닝 모형의 MOE들이 음이항 회귀모형에 비해 다소 우수한 것으로 나타났으나, MAD 기준으로 차이는 미미한 것으로 나타났다. 하지만 딥 러닝을 이용할 경우 다른 독립변수들을 추가하는 것이 용이하고, 모형의 구조 등을 변경할 경우 예측 신뢰도를 더욱 증가시킬 수 있을 것으로 판단된다.

• 한국유기농업학회지
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• 제12권2호
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• pp.231-241
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• 2004

In recent years, many researches are actively undertaken for environmental-friendly animal production according to the increased understanding about food safety because of the outbreak of various diseases such as mad cow disease, Foot and mouth disease and Poultry Influenza virus. However, high quality(higher safety)- animal production may not be successful without increasing of disease resistance of animal and the improvement of feeding environment. To increase the disease resistance is able to be accomplished by stimulating the immune function. The present study was undertaken to investigate the effects of enzyme mixture reinforced with ${\beta}$-glucanase activity which degrade polysaccharide to release ${\beta}$-glucan known as stimulator of immune function on the change of milk production and somatic cell count. After 12weeks of experimental feeding, milk production tended to be increased and somatic cell count was decreased from average $227{\times}10^4$ to $37.1{\times}10^4$. Milk protein and solid-fat content were tended to increase but milk fat showed decreasing tendency by the feeding of enzyme mixture. All together, it has been suggest6d that the improvement of high quality milk production may be possible through the dietary addition of immune modulating enzyme mixture in lactating dairy cows.

• 한국안광학회지
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• 제19권4호
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• pp.519-525
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• 2014

목적: 본 연구는 동적시력(kinetic visual acuity, KVA)과 동적 입체시(dynamic visual acuity)를 측정하여 그 상관성과 양안의 굴절부등이 KVA, 동적 입체시와 상관성이 있는지를 조사하였다. 방법: 성인 남녀 63명(남30, 여33)을 대상으로 굴절이상자는 완전교정 후 KVA 측정장치(KOWA AS-4A)와 Howard-Dolman Test(하워드-돌먼 입체검사, H-D Test)를 2.5 m 검사거리로 하여 KVA와 동적 입체시를 각각 측정하였다. 결과: KVA는 전체 평균 $0.49{\pm}0.25$, 남자 $0.58{\pm}0.26$, 여자 $0.40{\pm}0.22$이였고, LogMAD(Log minimum angle of displacement)동적 입체시는 전체 평균 $1.27{\pm}0.44$($28.44{\pm}25.03$초), 남자 $1.28{\pm}0.44$($28.23{\pm}23.34$초), 여자 $1.27{\pm}0.45$($28.63{\pm}26.83$초)로 KVA는 남녀 간에 통계적으로 유의한 차이를 보였으나(p=0.00) 동적 입체시는 유의한 차이가 없었고(p=0.97), KVA와 동적 입체시 사이의 상관성은 크지 않았다(r=0.03). KVA를 크기에 따라 Low, Middle, High로 구분하였을 때 세 그룹간의 동적 입체시도 유의한 차이는 없었다(p=0.99). 양안의 굴절부등의 양을 1 D미만과 1 D이상 두 그룹으로 구분하였을 때 KVA와 동적 입체시는 각각 유의한 차이를 보이지 않았고(p=0.11, p=0.09), 굴절부등과 KVA(r=0.33), 동적 입체시 (r=0.18)의 각각 상관성도 크지는 않았으나 동적 입체시보다 KVA가 굴절부등과 상관성이 좀 더 큰 것으로 나타났다. 결론: 성인 남녀의 KVA는 남녀 간에 유의한 차이를 보였고, 남자가 여자보다 KVA가 더 높았으며, KVA의 크기에 따른 동적 입체시, 굴절부등에 따른 KVA와 동적 입체시는 각각 유의한 차이를 보이지 않았고 상관성도 크지 않았다.

• 대한수의학회지
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• 제38권4호
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• pp.882-897
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• 1998

This experiment was conducted to predict the effects of motional characteristics on the fertility of Korean native cattle(KNC) by using CASA technology and in vitro fertilization system. Twenty-six KNC frozen semen straws were obtained from Korean KNC improvement department, livestock improvement main division, national livestock cooperatives federation in Korea. Specimens were allowed to thaw at $37^{\circ}C$ for 30 sec in water bath. Semen analysis was performed on semen image analysis system(SIAS, Medical supply, Korea) adjusted to the gate settings and used the semen droplet ($5{\mu}l$) placed on Makler counting chamber(Sefi medical instrument, Israel) prewarmed at $37^{\circ}C$. The same person used the same micropipette to fill the Makler counting chamber. A total of 150 or more of sperms were analysed in each specimen by a single trained person by scanning at least 5 to 10 fields. The oocytes collection, in vitro maturation, IVF, in vitro culture and determination of the cleavage rate were performed by the technique, as described by Hwang et al (1997). Statistical analysis was done by linear regression with use of the Sigma plot program on a IBM personal computer. The cleavage rate in vitro fertilized oocyte was significantly correlated(P<0.05) with MOT, VCL, VSL, VAP, ALH, BCF and MAD, but not CON, LIN, STR, WOB, DNM, DNC and HYP in regressional analysis. The results show that some kinematic characteristics of frozen-thawed semen by CASA can be predict the fertility in in vitro model system.

• 복식문화연구
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• 제5권1호
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• pp.99-123
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• 1997

The purpose of this study is to present the study method in order to analysis the fashion phenomena in ppular culture by popular culture theory. The method of this study is showed the method fo fashion culture, after it was examined that the trends of popular cultural method, the type of Korean popular culture discussion, and the relationship of fashion and popular culture. The results of this study are following as ; 1. Analysis of this study are structuralism stand and culturalism stand, and the application of criticism about the cultural technology in a new stand by means of the composition of Gramscic, A and Foucault. 2. Application of the ethnographic access method as anthroppological approach method about C. Geertz'culture. This si to describe and interpret the practice of subject through directive observation and conduct on a spot, thus is likely to be useful in the fashion study. 3. It needs a historical access method for that purpose, If it applicate Weber's methodology, it will have the use of both meaning interpretation and explanation of cause and effect on the use of both meaning interpretation and explanation of cause and effect on the basis of realistic conditions (historical data), and would appear that the peculiar apportunity of mental (cultural) progressional process became definitive explanation. 4. It must be mad up of the discussion (which is) based on the durability of tradition and culture. It is undeniable that the discussion, which related to popular culture up to the present, showed the disconnectedness of the past tradition and culture, and naturally accepts it's connection to epistemology. The cultural study is a theory interested in what it brings about, what way it's organized and what way it's used. The research of the fashion's connection to popular culture is composed of such topic ; how fashion is produces, how it is consumed, and then, the proposition which is concerned in what meaning it produce is made up of. The regulation of the realm of this research will be to help a researcher explain where to begin and how to do it. Although this cultural study method is more or less quantitative, or despite the expense of the accuracy of statistical analysis, this means that such method of cultural research needs to give attention to both aspects of phenomena and basic problems.

• 대한한의학회지
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• 제27권1호
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• pp.11-22
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• 2006

Objectives : In this study, the aim was to investigate the inhibitory effects of Bangpungtong-seoung-san on the obese gene and obese inhibitory about obese-mouse induced by high fat diet. Methods : In order to investigate the effects of Bangpuangtongseoung-san(BPTS) on the obese gene and obese inhibitory, C57BL/6 mice were induced by high fat diet. C57BL/6 mice were divided into three groups(normal, high fat diet with control, high fat diet with BPTS extract) and fed for 13weeks. Results : 1. The change of body weight and the final increase of body weight were decreased significantly. 2. The amount of the adipocyte in body weight was decreased significantly. 3. In primary adipocytes, ${\beta}3AR$ gene expression was increased significantly and leptin gene expression was decreased in $100{\mu}g/ml$ density significantly. 4. In primary adipocytes, the amount of TNF-${\alpha}$ was decreased in $100{\mu}g/ml$ density significantly and the amount of leptin was decreased but did not show significance. 5. In adipocytes tissue, the expression of leptin was decreased and the expression of ${\beta}3AR$ was increased. Conclusions : These results suggest that BPTS may inhibit the expression of the obese gene mad obese inhibitory about obese-mouse induced by high fat diet.

• 대한치과기공학회지
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• 제15권1호
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• pp.27-41
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• 1993

Degree of noise by personal dental laboratory working process and degree of noise by complex dental laboratory working process were measured separtely. The time of exposure to noise greater than 70dB was analyzed. Then, the whole degree of noise in dental laboratory was estimated on the basis of afore-mentioned information. Questionaire were employed to investigate the mental, emotional and physiological effects of noise in dental technicians, The purpose of this study was to provide basic information on keeping dental techneicans who are exposed to noise pollution in good working condition and good health. Results obtained are as follows ; 1. Polishing process in each working part showed high degree of noise greater than 70dB in terms of degree of noise by personal working. 2. Degree of noise by complex working process in each working part was greater than that of personal working process. 3. Time of exposure to noise complex working process the part of porcelain 150min, partial denture 120 min, crown and bridge 100 min, full denture 80 min. 4. Degree of noise by time in dental laboratory was 80dB in general for polishing process and below 75dB for waxing process. 5. Effects of noise on mental and emotional state of dental technicians showed that they felt irritated every day(14%), irritated once in a while(29%) and easily ger mad(19%). 6. Effects of noise on heart and stomach were hyper-gastric acid(38%), gastric ulcer(11%), gastritis(5%), deuodenal ulcer(3%) and weak heart function(32%). 7. Effects of noise in the hearing ability were weak(39%), moderate(33%) and normal(14%) Data presented in this study demonstrated that noise in the dental laboratory exerts profound effect on dental technicians mentally, physiologically and emotionally, in light of the above results, therefore, it appears advisable to devots substantial on the management of working condition and put further(continuing) efforts in the investigation for reducing noise problem.

• International Journal of Safety
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• 제4권1호
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• pp.14-17
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• 2005

Recycled polyol was obtained by glycolysis of MDI-based Polyurethane(PU) rigid foam. The chemical structure of the recycled pclyol was confirmed by GC(gas chromatography) and 1H-NMR. The recycled polyol throughout the glycolysis contained liquid polyol and methylenedianiline(MDA). MDA which could cause liver cancer is carcinogenic material. TWA(Time Weighted Average.) amount for MDA in MSDS(Material Safety Data Sheets) was confined less than 0.1 ppm. The melting temperature of MDA is $92^{\circ}C$, and boiling temperature is $398^{\circ}C$. During the gylcolysis most of MDA was dissolved in liquid polyol. The probability that MDA diffuses into the atmosphere is low but there could be an absorption of MDA into skin. Furthermore because MDA is amine compound, recycled polyol which contained MDA had a difficulty in reaction control of polyurethane. Therefore reduction of MDA amount was needed strongly. In this study the elimination of MDA were performed through deamination of the recycled polyol by glycidyl ether compounds. As glycolysis was proceeded, the amount of MDA was 9.8 wt % at early stage and increased up to 14.0 wt % after 8 hours reaction. It was found that 2-Ethylhexyl glycidyl ether which contains aliphatic moiety was very effective compound for eliminating the primary aromatic amine compound :md the optimal mole ratio of 2-ethylhexyl glycidyl ether to MAD was 3. The final polyol after deamination by 2-ethylhexyl glycidyl ether has an appropriate viscosity(less than 500 centi poise) for polyurethane reaction.

• 대한간호
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• 제31권5호
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• pp.53-64
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• 1992

A nurse is give much weight in the professions of hospital.The effective achievement of a goal of hospital organization needs to get nurses to contribute the structure positively through the rational personnel management of the nurses.The operation of performance rating system is necessary to improve because the nurses hold negative opinions about the resonable management of that system in most Korean hospitals.Therefore, the prupose of this research was to suggest an efficient method to solve the problem in connection with the management of nurses performance rating system.The results of the study are summarized as follows.1. As the performance rating implies the evaluation of employee's functional accomplishment and ability, and essential condition of the job was surveyed according to the job analysis of nursing activities and nurse position.That is to say, Nusrses' performances and capability is estimated in comparision with the condition of the job. 2. It is required adequacy for evaluation factors in performance rating.That is, $\circled1$ as for those who work in psychiatry or newborn baby room they should be appraied in terms of different factors from those applicable to whom work in a general staffs. $\circled2$ Evaluation factors should be concrete so that the quality and quantity of work and the potential ability of them can be correctly appraised. 3. In order to realize the object of perfamance rating system, the training on chief nurses are quite important. Also, careful practices and continuous supplementary training are required before the system is introduced.First of all, the appropriate evaluation can be mad by continuing to record the rating objects every day for the purpose of obtaining the objectivity of rating. 4. In course of transfering of the position and training, the induction of self-rating system and presentation of self-description is required to supplement functionally the performance rating system. 5. For the efficiency of nurses' performance rating system, the results of performance rating system must be reflected in promotion, allocation and training course, which makes the nurses have the motives and the organization accomplish the goal of modern nursing through its activation.

• 한국유기농업학회지
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• 제12권2호
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• pp.219-230
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• 2004

In recent years, the consumption of livestock products were markedly decreased by awareness of world-widely occurred diseases including mad cow disease, Foot and mouth disease, Hog cholera, and Poultry Influenza virus. the consumers ara also wanting to have highly safe food such as organic animal products because of concerning about residual of antibiotics in animal products. However, disease control and impairment of productivity are the major problem in organic animal production. On these points of view, the present study was undertaken to investigate the effects of 1% or 2% of dietary probiotics fortified with various minerals on improvement of egg production and egg quality in old lay6r feeding low quality feed mainly composed of food waste, sesame meal, and rice bran. After 4 weeks of experimental feeding, the diameter of spreading of egg white was clearly decreased from 11.2cm of control eggs to 10.5m and 10.1m in 1% and 2% treatment group eggs, respectively. The color of egg yolk was 9.3 in control eggs but remarkably increased in treatment groups showing 10.1~10.2. Egg production was 75.8% in control layers but significantly increased to 79.8% of 1% treatment group and 82.9% of 2% treatment group layers. Egg weights (C : 66.3g, 1% : 73.2g, and 2% : 76.7g) and egg shell thickness (C : 0.33mm, 1% : 0.35mm and 2% : 0.36mm) were also increased by the addition of 1% or 2% of probiotics when compared to those of control group eggs. All together, it has been suggested that dietary addition of probiotics fortified with various minerals can improve the egg quality and egg production in layer's productivities by the recycling of organic waste resources such as food waste and agricultural by-products.